import {
  init_define_process_env_UNI_STAT_TITLE_JSON
} from "./chunk-ON7YJ3LY.js";

// dep:hls_js
init_define_process_env_UNI_STAT_TITLE_JSON();

// ../../../../../../../../Desktop/项目/直播/liveH5-v3/node_modules/hls.js/dist/hls.mjs
init_define_process_env_UNI_STAT_TITLE_JSON();
var isFiniteNumber = Number.isFinite || function(value) {
  return typeof value === "number" && isFinite(value);
};
var isSafeInteger = Number.isSafeInteger || function(value) {
  return typeof value === "number" && Math.abs(value) <= MAX_SAFE_INTEGER;
};
var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
var ErrorTypes = function(ErrorTypes2) {
  ErrorTypes2["NETWORK_ERROR"] = "networkError";
  ErrorTypes2["MEDIA_ERROR"] = "mediaError";
  ErrorTypes2["KEY_SYSTEM_ERROR"] = "keySystemError";
  ErrorTypes2["MUX_ERROR"] = "muxError";
  ErrorTypes2["OTHER_ERROR"] = "otherError";
  return ErrorTypes2;
}({});
var ErrorDetails = function(ErrorDetails2) {
  ErrorDetails2["KEY_SYSTEM_NO_KEYS"] = "keySystemNoKeys";
  ErrorDetails2["KEY_SYSTEM_NO_ACCESS"] = "keySystemNoAccess";
  ErrorDetails2["KEY_SYSTEM_NO_SESSION"] = "keySystemNoSession";
  ErrorDetails2["KEY_SYSTEM_NO_CONFIGURED_LICENSE"] = "keySystemNoConfiguredLicense";
  ErrorDetails2["KEY_SYSTEM_LICENSE_REQUEST_FAILED"] = "keySystemLicenseRequestFailed";
  ErrorDetails2["KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED"] = "keySystemServerCertificateRequestFailed";
  ErrorDetails2["KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED"] = "keySystemServerCertificateUpdateFailed";
  ErrorDetails2["KEY_SYSTEM_SESSION_UPDATE_FAILED"] = "keySystemSessionUpdateFailed";
  ErrorDetails2["KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED"] = "keySystemStatusOutputRestricted";
  ErrorDetails2["KEY_SYSTEM_STATUS_INTERNAL_ERROR"] = "keySystemStatusInternalError";
  ErrorDetails2["KEY_SYSTEM_DESTROY_MEDIA_KEYS_ERROR"] = "keySystemDestroyMediaKeysError";
  ErrorDetails2["KEY_SYSTEM_DESTROY_CLOSE_SESSION_ERROR"] = "keySystemDestroyCloseSessionError";
  ErrorDetails2["KEY_SYSTEM_DESTROY_REMOVE_SESSION_ERROR"] = "keySystemDestroyRemoveSessionError";
  ErrorDetails2["MANIFEST_LOAD_ERROR"] = "manifestLoadError";
  ErrorDetails2["MANIFEST_LOAD_TIMEOUT"] = "manifestLoadTimeOut";
  ErrorDetails2["MANIFEST_PARSING_ERROR"] = "manifestParsingError";
  ErrorDetails2["MANIFEST_INCOMPATIBLE_CODECS_ERROR"] = "manifestIncompatibleCodecsError";
  ErrorDetails2["LEVEL_EMPTY_ERROR"] = "levelEmptyError";
  ErrorDetails2["LEVEL_LOAD_ERROR"] = "levelLoadError";
  ErrorDetails2["LEVEL_LOAD_TIMEOUT"] = "levelLoadTimeOut";
  ErrorDetails2["LEVEL_PARSING_ERROR"] = "levelParsingError";
  ErrorDetails2["LEVEL_SWITCH_ERROR"] = "levelSwitchError";
  ErrorDetails2["AUDIO_TRACK_LOAD_ERROR"] = "audioTrackLoadError";
  ErrorDetails2["AUDIO_TRACK_LOAD_TIMEOUT"] = "audioTrackLoadTimeOut";
  ErrorDetails2["SUBTITLE_LOAD_ERROR"] = "subtitleTrackLoadError";
  ErrorDetails2["SUBTITLE_TRACK_LOAD_TIMEOUT"] = "subtitleTrackLoadTimeOut";
  ErrorDetails2["FRAG_LOAD_ERROR"] = "fragLoadError";
  ErrorDetails2["FRAG_LOAD_TIMEOUT"] = "fragLoadTimeOut";
  ErrorDetails2["FRAG_DECRYPT_ERROR"] = "fragDecryptError";
  ErrorDetails2["FRAG_PARSING_ERROR"] = "fragParsingError";
  ErrorDetails2["FRAG_GAP"] = "fragGap";
  ErrorDetails2["REMUX_ALLOC_ERROR"] = "remuxAllocError";
  ErrorDetails2["KEY_LOAD_ERROR"] = "keyLoadError";
  ErrorDetails2["KEY_LOAD_TIMEOUT"] = "keyLoadTimeOut";
  ErrorDetails2["BUFFER_ADD_CODEC_ERROR"] = "bufferAddCodecError";
  ErrorDetails2["BUFFER_INCOMPATIBLE_CODECS_ERROR"] = "bufferIncompatibleCodecsError";
  ErrorDetails2["BUFFER_APPEND_ERROR"] = "bufferAppendError";
  ErrorDetails2["BUFFER_APPENDING_ERROR"] = "bufferAppendingError";
  ErrorDetails2["BUFFER_STALLED_ERROR"] = "bufferStalledError";
  ErrorDetails2["BUFFER_FULL_ERROR"] = "bufferFullError";
  ErrorDetails2["BUFFER_SEEK_OVER_HOLE"] = "bufferSeekOverHole";
  ErrorDetails2["BUFFER_NUDGE_ON_STALL"] = "bufferNudgeOnStall";
  ErrorDetails2["ASSET_LIST_LOAD_ERROR"] = "assetListLoadError";
  ErrorDetails2["ASSET_LIST_LOAD_TIMEOUT"] = "assetListLoadTimeout";
  ErrorDetails2["ASSET_LIST_PARSING_ERROR"] = "assetListParsingError";
  ErrorDetails2["INTERSTITIAL_ASSET_ITEM_ERROR"] = "interstitialAssetItemError";
  ErrorDetails2["INTERNAL_EXCEPTION"] = "internalException";
  ErrorDetails2["INTERNAL_ABORTED"] = "aborted";
  ErrorDetails2["ATTACH_MEDIA_ERROR"] = "attachMediaError";
  ErrorDetails2["UNKNOWN"] = "unknown";
  return ErrorDetails2;
}({});
var Events = function(Events2) {
  Events2["MEDIA_ATTACHING"] = "hlsMediaAttaching";
  Events2["MEDIA_ATTACHED"] = "hlsMediaAttached";
  Events2["MEDIA_DETACHING"] = "hlsMediaDetaching";
  Events2["MEDIA_DETACHED"] = "hlsMediaDetached";
  Events2["MEDIA_ENDED"] = "hlsMediaEnded";
  Events2["STALL_RESOLVED"] = "hlsStallResolved";
  Events2["BUFFER_RESET"] = "hlsBufferReset";
  Events2["BUFFER_CODECS"] = "hlsBufferCodecs";
  Events2["BUFFER_CREATED"] = "hlsBufferCreated";
  Events2["BUFFER_APPENDING"] = "hlsBufferAppending";
  Events2["BUFFER_APPENDED"] = "hlsBufferAppended";
  Events2["BUFFER_EOS"] = "hlsBufferEos";
  Events2["BUFFERED_TO_END"] = "hlsBufferedToEnd";
  Events2["BUFFER_FLUSHING"] = "hlsBufferFlushing";
  Events2["BUFFER_FLUSHED"] = "hlsBufferFlushed";
  Events2["MANIFEST_LOADING"] = "hlsManifestLoading";
  Events2["MANIFEST_LOADED"] = "hlsManifestLoaded";
  Events2["MANIFEST_PARSED"] = "hlsManifestParsed";
  Events2["LEVEL_SWITCHING"] = "hlsLevelSwitching";
  Events2["LEVEL_SWITCHED"] = "hlsLevelSwitched";
  Events2["LEVEL_LOADING"] = "hlsLevelLoading";
  Events2["LEVEL_LOADED"] = "hlsLevelLoaded";
  Events2["LEVEL_UPDATED"] = "hlsLevelUpdated";
  Events2["LEVEL_PTS_UPDATED"] = "hlsLevelPtsUpdated";
  Events2["LEVELS_UPDATED"] = "hlsLevelsUpdated";
  Events2["AUDIO_TRACKS_UPDATED"] = "hlsAudioTracksUpdated";
  Events2["AUDIO_TRACK_SWITCHING"] = "hlsAudioTrackSwitching";
  Events2["AUDIO_TRACK_SWITCHED"] = "hlsAudioTrackSwitched";
  Events2["AUDIO_TRACK_LOADING"] = "hlsAudioTrackLoading";
  Events2["AUDIO_TRACK_LOADED"] = "hlsAudioTrackLoaded";
  Events2["AUDIO_TRACK_UPDATED"] = "hlsAudioTrackUpdated";
  Events2["SUBTITLE_TRACKS_UPDATED"] = "hlsSubtitleTracksUpdated";
  Events2["SUBTITLE_TRACKS_CLEARED"] = "hlsSubtitleTracksCleared";
  Events2["SUBTITLE_TRACK_SWITCH"] = "hlsSubtitleTrackSwitch";
  Events2["SUBTITLE_TRACK_LOADING"] = "hlsSubtitleTrackLoading";
  Events2["SUBTITLE_TRACK_LOADED"] = "hlsSubtitleTrackLoaded";
  Events2["SUBTITLE_TRACK_UPDATED"] = "hlsSubtitleTrackUpdated";
  Events2["SUBTITLE_FRAG_PROCESSED"] = "hlsSubtitleFragProcessed";
  Events2["CUES_PARSED"] = "hlsCuesParsed";
  Events2["NON_NATIVE_TEXT_TRACKS_FOUND"] = "hlsNonNativeTextTracksFound";
  Events2["INIT_PTS_FOUND"] = "hlsInitPtsFound";
  Events2["FRAG_LOADING"] = "hlsFragLoading";
  Events2["FRAG_LOAD_EMERGENCY_ABORTED"] = "hlsFragLoadEmergencyAborted";
  Events2["FRAG_LOADED"] = "hlsFragLoaded";
  Events2["FRAG_DECRYPTED"] = "hlsFragDecrypted";
  Events2["FRAG_PARSING_INIT_SEGMENT"] = "hlsFragParsingInitSegment";
  Events2["FRAG_PARSING_USERDATA"] = "hlsFragParsingUserdata";
  Events2["FRAG_PARSING_METADATA"] = "hlsFragParsingMetadata";
  Events2["FRAG_PARSED"] = "hlsFragParsed";
  Events2["FRAG_BUFFERED"] = "hlsFragBuffered";
  Events2["FRAG_CHANGED"] = "hlsFragChanged";
  Events2["FPS_DROP"] = "hlsFpsDrop";
  Events2["FPS_DROP_LEVEL_CAPPING"] = "hlsFpsDropLevelCapping";
  Events2["MAX_AUTO_LEVEL_UPDATED"] = "hlsMaxAutoLevelUpdated";
  Events2["ERROR"] = "hlsError";
  Events2["DESTROYING"] = "hlsDestroying";
  Events2["KEY_LOADING"] = "hlsKeyLoading";
  Events2["KEY_LOADED"] = "hlsKeyLoaded";
  Events2["LIVE_BACK_BUFFER_REACHED"] = "hlsLiveBackBufferReached";
  Events2["BACK_BUFFER_REACHED"] = "hlsBackBufferReached";
  Events2["STEERING_MANIFEST_LOADED"] = "hlsSteeringManifestLoaded";
  Events2["ASSET_LIST_LOADING"] = "hlsAssetListLoading";
  Events2["ASSET_LIST_LOADED"] = "hlsAssetListLoaded";
  Events2["INTERSTITIALS_UPDATED"] = "hlsInterstitialsUpdated";
  Events2["INTERSTITIALS_BUFFERED_TO_BOUNDARY"] = "hlsInterstitialsBufferedToBoundary";
  Events2["INTERSTITIAL_ASSET_PLAYER_CREATED"] = "hlsInterstitialAssetPlayerCreated";
  Events2["INTERSTITIAL_STARTED"] = "hlsInterstitialStarted";
  Events2["INTERSTITIAL_ASSET_STARTED"] = "hlsInterstitialAssetStarted";
  Events2["INTERSTITIAL_ASSET_ENDED"] = "hlsInterstitialAssetEnded";
  Events2["INTERSTITIAL_ASSET_ERROR"] = "hlsInterstitialAssetError";
  Events2["INTERSTITIAL_ENDED"] = "hlsInterstitialEnded";
  Events2["INTERSTITIALS_PRIMARY_RESUMED"] = "hlsInterstitialsPrimaryResumed";
  Events2["PLAYOUT_LIMIT_REACHED"] = "hlsPlayoutLimitReached";
  Events2["EVENT_CUE_ENTER"] = "hlsEventCueEnter";
  return Events2;
}({});
var PlaylistContextType = {
  MANIFEST: "manifest",
  LEVEL: "level",
  AUDIO_TRACK: "audioTrack",
  SUBTITLE_TRACK: "subtitleTrack"
};
var PlaylistLevelType = {
  MAIN: "main",
  AUDIO: "audio",
  SUBTITLE: "subtitle"
};
var EWMA = class {
  constructor(halfLife, estimate = 0, weight = 0) {
    this.halfLife = void 0;
    this.alpha_ = void 0;
    this.estimate_ = void 0;
    this.totalWeight_ = void 0;
    this.halfLife = halfLife;
    this.alpha_ = halfLife ? Math.exp(Math.log(0.5) / halfLife) : 0;
    this.estimate_ = estimate;
    this.totalWeight_ = weight;
  }
  sample(weight, value) {
    const adjAlpha = Math.pow(this.alpha_, weight);
    this.estimate_ = value * (1 - adjAlpha) + adjAlpha * this.estimate_;
    this.totalWeight_ += weight;
  }
  getTotalWeight() {
    return this.totalWeight_;
  }
  getEstimate() {
    if (this.alpha_) {
      const zeroFactor = 1 - Math.pow(this.alpha_, this.totalWeight_);
      if (zeroFactor) {
        return this.estimate_ / zeroFactor;
      }
    }
    return this.estimate_;
  }
};
var EwmaBandWidthEstimator = class {
  constructor(slow, fast, defaultEstimate, defaultTTFB = 100) {
    this.defaultEstimate_ = void 0;
    this.minWeight_ = void 0;
    this.minDelayMs_ = void 0;
    this.slow_ = void 0;
    this.fast_ = void 0;
    this.defaultTTFB_ = void 0;
    this.ttfb_ = void 0;
    this.defaultEstimate_ = defaultEstimate;
    this.minWeight_ = 1e-3;
    this.minDelayMs_ = 50;
    this.slow_ = new EWMA(slow);
    this.fast_ = new EWMA(fast);
    this.defaultTTFB_ = defaultTTFB;
    this.ttfb_ = new EWMA(slow);
  }
  update(slow, fast) {
    const {
      slow_,
      fast_,
      ttfb_
    } = this;
    if (slow_.halfLife !== slow) {
      this.slow_ = new EWMA(slow, slow_.getEstimate(), slow_.getTotalWeight());
    }
    if (fast_.halfLife !== fast) {
      this.fast_ = new EWMA(fast, fast_.getEstimate(), fast_.getTotalWeight());
    }
    if (ttfb_.halfLife !== slow) {
      this.ttfb_ = new EWMA(slow, ttfb_.getEstimate(), ttfb_.getTotalWeight());
    }
  }
  sample(durationMs, numBytes) {
    durationMs = Math.max(durationMs, this.minDelayMs_);
    const numBits = 8 * numBytes;
    const durationS = durationMs / 1e3;
    const bandwidthInBps = numBits / durationS;
    this.fast_.sample(durationS, bandwidthInBps);
    this.slow_.sample(durationS, bandwidthInBps);
  }
  sampleTTFB(ttfb) {
    const seconds = ttfb / 1e3;
    const weight = Math.sqrt(2) * Math.exp(-Math.pow(seconds, 2) / 2);
    this.ttfb_.sample(weight, Math.max(ttfb, 5));
  }
  canEstimate() {
    return this.fast_.getTotalWeight() >= this.minWeight_;
  }
  getEstimate() {
    if (this.canEstimate()) {
      return Math.min(this.fast_.getEstimate(), this.slow_.getEstimate());
    } else {
      return this.defaultEstimate_;
    }
  }
  getEstimateTTFB() {
    if (this.ttfb_.getTotalWeight() >= this.minWeight_) {
      return this.ttfb_.getEstimate();
    } else {
      return this.defaultTTFB_;
    }
  }
  get defaultEstimate() {
    return this.defaultEstimate_;
  }
  destroy() {
  }
};
function _defineProperty(e, r, t) {
  return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, {
    value: t,
    enumerable: true,
    configurable: true,
    writable: true
  }) : e[r] = t, e;
}
function _extends() {
  return _extends = Object.assign ? Object.assign.bind() : function(n) {
    for (var e = 1; e < arguments.length; e++) {
      var t = arguments[e];
      for (var r in t)
        ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
    }
    return n;
  }, _extends.apply(null, arguments);
}
function ownKeys(e, r) {
  var t = Object.keys(e);
  if (Object.getOwnPropertySymbols) {
    var o = Object.getOwnPropertySymbols(e);
    r && (o = o.filter(function(r2) {
      return Object.getOwnPropertyDescriptor(e, r2).enumerable;
    })), t.push.apply(t, o);
  }
  return t;
}
function _objectSpread2(e) {
  for (var r = 1; r < arguments.length; r++) {
    var t = arguments[r] != null ? arguments[r] : {};
    r % 2 ? ownKeys(Object(t), true).forEach(function(r2) {
      _defineProperty(e, r2, t[r2]);
    }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function(r2) {
      Object.defineProperty(e, r2, Object.getOwnPropertyDescriptor(t, r2));
    });
  }
  return e;
}
function _toPrimitive(t, r) {
  if (typeof t != "object" || !t)
    return t;
  var e = t[Symbol.toPrimitive];
  if (e !== void 0) {
    var i = e.call(t, r);
    if (typeof i != "object")
      return i;
    throw new TypeError("@@toPrimitive must return a primitive value.");
  }
  return (r === "string" ? String : Number)(t);
}
function _toPropertyKey(t) {
  var i = _toPrimitive(t, "string");
  return typeof i == "symbol" ? i : i + "";
}
var Logger = class {
  constructor(label, logger2) {
    this.trace = void 0;
    this.debug = void 0;
    this.log = void 0;
    this.warn = void 0;
    this.info = void 0;
    this.error = void 0;
    const lb = `[${label}]:`;
    this.trace = noop;
    this.debug = logger2.debug.bind(null, lb);
    this.log = logger2.log.bind(null, lb);
    this.warn = logger2.warn.bind(null, lb);
    this.info = logger2.info.bind(null, lb);
    this.error = logger2.error.bind(null, lb);
  }
};
var noop = function noop2() {
};
var fakeLogger = {
  trace: noop,
  debug: noop,
  log: noop,
  warn: noop,
  info: noop,
  error: noop
};
function createLogger() {
  return _extends({}, fakeLogger);
}
function consolePrintFn(type, id) {
  const func = self.console[type];
  return func ? func.bind(self.console, `${id ? "[" + id + "] " : ""}[${type}] >`) : noop;
}
function getLoggerFn(key, debugConfig, id) {
  return debugConfig[key] ? debugConfig[key].bind(debugConfig) : consolePrintFn(key, id);
}
var exportedLogger = createLogger();
function enableLogs(debugConfig, context, id) {
  const newLogger = createLogger();
  if (typeof console === "object" && debugConfig === true || typeof debugConfig === "object") {
    const keys = [
      "debug",
      "log",
      "info",
      "warn",
      "error"
    ];
    keys.forEach((key) => {
      newLogger[key] = getLoggerFn(key, debugConfig, id);
    });
    try {
      newLogger.log(`Debug logs enabled for "${context}" in hls.js version ${"1.6.7"}`);
    } catch (e) {
      return createLogger();
    }
    keys.forEach((key) => {
      exportedLogger[key] = getLoggerFn(key, debugConfig);
    });
  } else {
    _extends(exportedLogger, newLogger);
  }
  return newLogger;
}
var logger = exportedLogger;
function getMediaSource(preferManagedMediaSource = true) {
  if (typeof self === "undefined")
    return void 0;
  const mms = (preferManagedMediaSource || !self.MediaSource) && self.ManagedMediaSource;
  return mms || self.MediaSource || self.WebKitMediaSource;
}
function isManagedMediaSource(source) {
  return typeof self !== "undefined" && source === self.ManagedMediaSource;
}
function isCompatibleTrackChange(currentTracks, requiredTracks) {
  const trackNames = Object.keys(currentTracks);
  const requiredTrackNames = Object.keys(requiredTracks);
  const trackCount = trackNames.length;
  const requiredTrackCount = requiredTrackNames.length;
  return !trackCount || !requiredTrackCount || trackCount === requiredTrackCount && !trackNames.some((name) => requiredTrackNames.indexOf(name) === -1);
}
function utf8ArrayToStr(array, exitOnNull = false) {
  if (typeof TextDecoder !== "undefined") {
    const decoder = new TextDecoder("utf-8");
    const decoded = decoder.decode(array);
    if (exitOnNull) {
      const idx = decoded.indexOf("\0");
      return idx !== -1 ? decoded.substring(0, idx) : decoded;
    }
    return decoded.replace(/\0/g, "");
  }
  const len = array.length;
  let c;
  let char2;
  let char3;
  let out = "";
  let i = 0;
  while (i < len) {
    c = array[i++];
    if (c === 0 && exitOnNull) {
      return out;
    } else if (c === 0 || c === 3) {
      continue;
    }
    switch (c >> 4) {
      case 0:
      case 1:
      case 2:
      case 3:
      case 4:
      case 5:
      case 6:
      case 7:
        out += String.fromCharCode(c);
        break;
      case 12:
      case 13:
        char2 = array[i++];
        out += String.fromCharCode((c & 31) << 6 | char2 & 63);
        break;
      case 14:
        char2 = array[i++];
        char3 = array[i++];
        out += String.fromCharCode((c & 15) << 12 | (char2 & 63) << 6 | (char3 & 63) << 0);
        break;
    }
  }
  return out;
}
var Hex = {
  hexDump: function(array) {
    let str = "";
    for (let i = 0; i < array.length; i++) {
      let h = array[i].toString(16);
      if (h.length < 2) {
        h = "0" + h;
      }
      str += h;
    }
    return str;
  }
};
function hexToArrayBuffer(str) {
  return Uint8Array.from(str.replace(/^0x/, "").replace(/([\da-fA-F]{2}) ?/g, "0x$1 ").replace(/ +$/, "").split(" ")).buffer;
}
function getDefaultExportFromCjs(x) {
  return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, "default") ? x["default"] : x;
}
var urlToolkit = { exports: {} };
var hasRequiredUrlToolkit;
function requireUrlToolkit() {
  if (hasRequiredUrlToolkit)
    return urlToolkit.exports;
  hasRequiredUrlToolkit = 1;
  (function(module, exports) {
    (function(root) {
      var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/;
      var FIRST_SEGMENT_REGEX = /^(?=([^\/?#]*))\1([^]*)$/;
      var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
      var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
      var URLToolkit = {
        buildAbsoluteURL: function(baseURL, relativeURL, opts) {
          opts = opts || {};
          baseURL = baseURL.trim();
          relativeURL = relativeURL.trim();
          if (!relativeURL) {
            if (!opts.alwaysNormalize) {
              return baseURL;
            }
            var basePartsForNormalise = URLToolkit.parseURL(baseURL);
            if (!basePartsForNormalise) {
              throw new Error("Error trying to parse base URL.");
            }
            basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
            return URLToolkit.buildURLFromParts(basePartsForNormalise);
          }
          var relativeParts = URLToolkit.parseURL(relativeURL);
          if (!relativeParts) {
            throw new Error("Error trying to parse relative URL.");
          }
          if (relativeParts.scheme) {
            if (!opts.alwaysNormalize) {
              return relativeURL;
            }
            relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
            return URLToolkit.buildURLFromParts(relativeParts);
          }
          var baseParts = URLToolkit.parseURL(baseURL);
          if (!baseParts) {
            throw new Error("Error trying to parse base URL.");
          }
          if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== "/") {
            var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
            baseParts.netLoc = pathParts[1];
            baseParts.path = pathParts[2];
          }
          if (baseParts.netLoc && !baseParts.path) {
            baseParts.path = "/";
          }
          var builtParts = {
            scheme: baseParts.scheme,
            netLoc: relativeParts.netLoc,
            path: null,
            params: relativeParts.params,
            query: relativeParts.query,
            fragment: relativeParts.fragment
          };
          if (!relativeParts.netLoc) {
            builtParts.netLoc = baseParts.netLoc;
            if (relativeParts.path[0] !== "/") {
              if (!relativeParts.path) {
                builtParts.path = baseParts.path;
                if (!relativeParts.params) {
                  builtParts.params = baseParts.params;
                  if (!relativeParts.query) {
                    builtParts.query = baseParts.query;
                  }
                }
              } else {
                var baseURLPath = baseParts.path;
                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf("/") + 1) + relativeParts.path;
                builtParts.path = URLToolkit.normalizePath(newPath);
              }
            }
          }
          if (builtParts.path === null) {
            builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
          }
          return URLToolkit.buildURLFromParts(builtParts);
        },
        parseURL: function(url) {
          var parts = URL_REGEX.exec(url);
          if (!parts) {
            return null;
          }
          return {
            scheme: parts[1] || "",
            netLoc: parts[2] || "",
            path: parts[3] || "",
            params: parts[4] || "",
            query: parts[5] || "",
            fragment: parts[6] || ""
          };
        },
        normalizePath: function(path) {
          path = path.split("").reverse().join("").replace(SLASH_DOT_REGEX, "");
          while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, "")).length) {
          }
          return path.split("").reverse().join("");
        },
        buildURLFromParts: function(parts) {
          return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
        }
      };
      module.exports = URLToolkit;
    })();
  })(urlToolkit);
  return urlToolkit.exports;
}
var urlToolkitExports = requireUrlToolkit();
var LoadStats = class {
  constructor() {
    this.aborted = false;
    this.loaded = 0;
    this.retry = 0;
    this.total = 0;
    this.chunkCount = 0;
    this.bwEstimate = 0;
    this.loading = {
      start: 0,
      first: 0,
      end: 0
    };
    this.parsing = {
      start: 0,
      end: 0
    };
    this.buffering = {
      start: 0,
      first: 0,
      end: 0
    };
  }
};
var ElementaryStreamTypes = {
  AUDIO: "audio",
  VIDEO: "video",
  AUDIOVIDEO: "audiovideo"
};
var BaseSegment = class {
  constructor(base) {
    this._byteRange = null;
    this._url = null;
    this._stats = null;
    this._streams = null;
    this.base = void 0;
    this.relurl = void 0;
    if (typeof base === "string") {
      base = {
        url: base
      };
    }
    this.base = base;
    makeEnumerable(this, "stats");
  }
  setByteRange(value, previous) {
    const params = value.split("@", 2);
    let start;
    if (params.length === 1) {
      start = (previous == null ? void 0 : previous.byteRangeEndOffset) || 0;
    } else {
      start = parseInt(params[1]);
    }
    this._byteRange = [start, parseInt(params[0]) + start];
  }
  get baseurl() {
    return this.base.url;
  }
  get byteRange() {
    if (this._byteRange === null) {
      return [];
    }
    return this._byteRange;
  }
  get byteRangeStartOffset() {
    return this.byteRange[0];
  }
  get byteRangeEndOffset() {
    return this.byteRange[1];
  }
  get elementaryStreams() {
    if (this._streams === null) {
      this._streams = {
        [ElementaryStreamTypes.AUDIO]: null,
        [ElementaryStreamTypes.VIDEO]: null,
        [ElementaryStreamTypes.AUDIOVIDEO]: null
      };
    }
    return this._streams;
  }
  set elementaryStreams(value) {
    this._streams = value;
  }
  get hasStats() {
    return this._stats !== null;
  }
  get hasStreams() {
    return this._streams !== null;
  }
  get stats() {
    if (this._stats === null) {
      this._stats = new LoadStats();
    }
    return this._stats;
  }
  set stats(value) {
    this._stats = value;
  }
  get url() {
    if (!this._url && this.baseurl && this.relurl) {
      this._url = urlToolkitExports.buildAbsoluteURL(this.baseurl, this.relurl, {
        alwaysNormalize: true
      });
    }
    return this._url || "";
  }
  set url(value) {
    this._url = value;
  }
  clearElementaryStreamInfo() {
    const {
      elementaryStreams
    } = this;
    elementaryStreams[ElementaryStreamTypes.AUDIO] = null;
    elementaryStreams[ElementaryStreamTypes.VIDEO] = null;
    elementaryStreams[ElementaryStreamTypes.AUDIOVIDEO] = null;
  }
};
function isMediaFragment(frag) {
  return frag.sn !== "initSegment";
}
var Fragment = class extends BaseSegment {
  constructor(type, base) {
    super(base);
    this._decryptdata = null;
    this._programDateTime = null;
    this._ref = null;
    this._bitrate = void 0;
    this.rawProgramDateTime = null;
    this.tagList = [];
    this.duration = 0;
    this.sn = 0;
    this.levelkeys = void 0;
    this.type = void 0;
    this.loader = null;
    this.keyLoader = null;
    this.level = -1;
    this.cc = 0;
    this.startPTS = void 0;
    this.endPTS = void 0;
    this.startDTS = void 0;
    this.endDTS = void 0;
    this.start = 0;
    this.playlistOffset = 0;
    this.deltaPTS = void 0;
    this.maxStartPTS = void 0;
    this.minEndPTS = void 0;
    this.data = void 0;
    this.bitrateTest = false;
    this.title = null;
    this.initSegment = null;
    this.endList = void 0;
    this.gap = void 0;
    this.urlId = 0;
    this.type = type;
  }
  get byteLength() {
    if (this.hasStats) {
      const total = this.stats.total;
      if (total) {
        return total;
      }
    }
    if (this.byteRange) {
      const start = this.byteRange[0];
      const end = this.byteRange[1];
      if (isFiniteNumber(start) && isFiniteNumber(end)) {
        return end - start;
      }
    }
    return null;
  }
  get bitrate() {
    if (this.byteLength) {
      return this.byteLength * 8 / this.duration;
    }
    if (this._bitrate) {
      return this._bitrate;
    }
    return null;
  }
  set bitrate(value) {
    this._bitrate = value;
  }
  get decryptdata() {
    const {
      levelkeys
    } = this;
    if (!levelkeys && !this._decryptdata) {
      return null;
    }
    if (!this._decryptdata && this.levelkeys && !this.levelkeys.NONE) {
      const key = this.levelkeys.identity;
      if (key) {
        this._decryptdata = key.getDecryptData(this.sn);
      } else {
        const keyFormats = Object.keys(this.levelkeys);
        if (keyFormats.length === 1) {
          return this._decryptdata = this.levelkeys[keyFormats[0]].getDecryptData(this.sn);
        }
      }
    }
    return this._decryptdata;
  }
  get end() {
    return this.start + this.duration;
  }
  get endProgramDateTime() {
    if (this.programDateTime === null) {
      return null;
    }
    const duration = !isFiniteNumber(this.duration) ? 0 : this.duration;
    return this.programDateTime + duration * 1e3;
  }
  get encrypted() {
    var _this$_decryptdata;
    if ((_this$_decryptdata = this._decryptdata) != null && _this$_decryptdata.encrypted) {
      return true;
    } else if (this.levelkeys) {
      const keyFormats = Object.keys(this.levelkeys);
      const len = keyFormats.length;
      if (len > 1 || len === 1 && this.levelkeys[keyFormats[0]].encrypted) {
        return true;
      }
    }
    return false;
  }
  get programDateTime() {
    if (this._programDateTime === null && this.rawProgramDateTime) {
      this.programDateTime = Date.parse(this.rawProgramDateTime);
    }
    return this._programDateTime;
  }
  set programDateTime(value) {
    if (!isFiniteNumber(value)) {
      this._programDateTime = this.rawProgramDateTime = null;
      return;
    }
    this._programDateTime = value;
  }
  get ref() {
    if (!isMediaFragment(this)) {
      return null;
    }
    if (!this._ref) {
      this._ref = {
        base: this.base,
        start: this.start,
        duration: this.duration,
        sn: this.sn,
        programDateTime: this.programDateTime
      };
    }
    return this._ref;
  }
  addStart(value) {
    this.setStart(this.start + value);
  }
  setStart(value) {
    this.start = value;
    if (this._ref) {
      this._ref.start = value;
    }
  }
  setDuration(value) {
    this.duration = value;
    if (this._ref) {
      this._ref.duration = value;
    }
  }
  setKeyFormat(keyFormat) {
    if (this.levelkeys) {
      const key = this.levelkeys[keyFormat];
      if (key && !this._decryptdata) {
        this._decryptdata = key.getDecryptData(this.sn);
      }
    }
  }
  abortRequests() {
    var _this$loader, _this$keyLoader;
    (_this$loader = this.loader) == null ? void 0 : _this$loader.abort();
    (_this$keyLoader = this.keyLoader) == null ? void 0 : _this$keyLoader.abort();
  }
  setElementaryStreamInfo(type, startPTS, endPTS, startDTS, endDTS, partial = false) {
    const {
      elementaryStreams
    } = this;
    const info = elementaryStreams[type];
    if (!info) {
      elementaryStreams[type] = {
        startPTS,
        endPTS,
        startDTS,
        endDTS,
        partial
      };
      return;
    }
    info.startPTS = Math.min(info.startPTS, startPTS);
    info.endPTS = Math.max(info.endPTS, endPTS);
    info.startDTS = Math.min(info.startDTS, startDTS);
    info.endDTS = Math.max(info.endDTS, endDTS);
  }
};
var Part = class extends BaseSegment {
  constructor(partAttrs, frag, base, index, previous) {
    super(base);
    this.fragOffset = 0;
    this.duration = 0;
    this.gap = false;
    this.independent = false;
    this.relurl = void 0;
    this.fragment = void 0;
    this.index = void 0;
    this.duration = partAttrs.decimalFloatingPoint("DURATION");
    this.gap = partAttrs.bool("GAP");
    this.independent = partAttrs.bool("INDEPENDENT");
    this.relurl = partAttrs.enumeratedString("URI");
    this.fragment = frag;
    this.index = index;
    const byteRange = partAttrs.enumeratedString("BYTERANGE");
    if (byteRange) {
      this.setByteRange(byteRange, previous);
    }
    if (previous) {
      this.fragOffset = previous.fragOffset + previous.duration;
    }
  }
  get start() {
    return this.fragment.start + this.fragOffset;
  }
  get end() {
    return this.start + this.duration;
  }
  get loaded() {
    const {
      elementaryStreams
    } = this;
    return !!(elementaryStreams.audio || elementaryStreams.video || elementaryStreams.audiovideo);
  }
};
function getOwnPropertyDescriptorFromPrototypeChain(object, property) {
  const prototype = Object.getPrototypeOf(object);
  if (prototype) {
    const propertyDescriptor = Object.getOwnPropertyDescriptor(prototype, property);
    if (propertyDescriptor) {
      return propertyDescriptor;
    }
    return getOwnPropertyDescriptorFromPrototypeChain(prototype, property);
  }
}
function makeEnumerable(object, property) {
  const d = getOwnPropertyDescriptorFromPrototypeChain(object, property);
  if (d) {
    d.enumerable = true;
    Object.defineProperty(object, property, d);
  }
}
var UINT32_MAX$1 = Math.pow(2, 32) - 1;
var push = [].push;
var RemuxerTrackIdConfig = {
  video: 1,
  audio: 2,
  id3: 3,
  text: 4
};
function bin2str(data) {
  return String.fromCharCode.apply(null, data);
}
function readUint16(buffer, offset) {
  const val = buffer[offset] << 8 | buffer[offset + 1];
  return val < 0 ? 65536 + val : val;
}
function readUint32(buffer, offset) {
  const val = readSint32(buffer, offset);
  return val < 0 ? 4294967296 + val : val;
}
function readUint64(buffer, offset) {
  let result = readUint32(buffer, offset);
  result *= Math.pow(2, 32);
  result += readUint32(buffer, offset + 4);
  return result;
}
function readSint32(buffer, offset) {
  return buffer[offset] << 24 | buffer[offset + 1] << 16 | buffer[offset + 2] << 8 | buffer[offset + 3];
}
function hasMoofData(data) {
  const end = data.byteLength;
  for (let i = 0; i < end; ) {
    const size = readUint32(data, i);
    if (size > 8 && data[i + 4] === 109 && data[i + 5] === 111 && data[i + 6] === 111 && data[i + 7] === 102) {
      return true;
    }
    i = size > 1 ? i + size : end;
  }
  return false;
}
function findBox(data, path) {
  const results = [];
  if (!path.length) {
    return results;
  }
  const end = data.byteLength;
  for (let i = 0; i < end; ) {
    const size = readUint32(data, i);
    const type = bin2str(data.subarray(i + 4, i + 8));
    const endbox = size > 1 ? i + size : end;
    if (type === path[0]) {
      if (path.length === 1) {
        results.push(data.subarray(i + 8, endbox));
      } else {
        const subresults = findBox(data.subarray(i + 8, endbox), path.slice(1));
        if (subresults.length) {
          push.apply(results, subresults);
        }
      }
    }
    i = endbox;
  }
  return results;
}
function parseSegmentIndex(sidx) {
  const references = [];
  const version2 = sidx[0];
  let index = 8;
  const timescale = readUint32(sidx, index);
  index += 4;
  let earliestPresentationTime = 0;
  let firstOffset = 0;
  if (version2 === 0) {
    earliestPresentationTime = readUint32(sidx, index);
    firstOffset = readUint32(sidx, index + 4);
    index += 8;
  } else {
    earliestPresentationTime = readUint64(sidx, index);
    firstOffset = readUint64(sidx, index + 8);
    index += 16;
  }
  index += 2;
  let startByte = sidx.length + firstOffset;
  const referencesCount = readUint16(sidx, index);
  index += 2;
  for (let i = 0; i < referencesCount; i++) {
    let referenceIndex = index;
    const referenceInfo = readUint32(sidx, referenceIndex);
    referenceIndex += 4;
    const referenceSize = referenceInfo & 2147483647;
    const referenceType = (referenceInfo & 2147483648) >>> 31;
    if (referenceType === 1) {
      logger.warn("SIDX has hierarchical references (not supported)");
      return null;
    }
    const subsegmentDuration = readUint32(sidx, referenceIndex);
    referenceIndex += 4;
    references.push({
      referenceSize,
      subsegmentDuration,
      info: {
        duration: subsegmentDuration / timescale,
        start: startByte,
        end: startByte + referenceSize - 1
      }
    });
    startByte += referenceSize;
    referenceIndex += 4;
    index = referenceIndex;
  }
  return {
    earliestPresentationTime,
    timescale,
    version: version2,
    referencesCount,
    references
  };
}
function parseInitSegment(initSegment) {
  const result = [];
  const traks = findBox(initSegment, ["moov", "trak"]);
  for (let i = 0; i < traks.length; i++) {
    const trak = traks[i];
    const tkhd = findBox(trak, ["tkhd"])[0];
    if (tkhd) {
      let version2 = tkhd[0];
      const trackId = readUint32(tkhd, version2 === 0 ? 12 : 20);
      const mdhd = findBox(trak, ["mdia", "mdhd"])[0];
      if (mdhd) {
        version2 = mdhd[0];
        const timescale = readUint32(mdhd, version2 === 0 ? 12 : 20);
        const hdlr = findBox(trak, ["mdia", "hdlr"])[0];
        if (hdlr) {
          const hdlrType = bin2str(hdlr.subarray(8, 12));
          const type = {
            soun: ElementaryStreamTypes.AUDIO,
            vide: ElementaryStreamTypes.VIDEO
          }[hdlrType];
          const stsdBox = findBox(trak, ["mdia", "minf", "stbl", "stsd"])[0];
          const stsd = parseStsd(stsdBox);
          if (type) {
            result[trackId] = {
              timescale,
              type,
              stsd
            };
            result[type] = _objectSpread2({
              timescale,
              id: trackId
            }, stsd);
          } else {
            result[trackId] = {
              timescale,
              type: hdlrType,
              stsd
            };
          }
        }
      }
    }
  }
  const trex = findBox(initSegment, ["moov", "mvex", "trex"]);
  trex.forEach((trex2) => {
    const trackId = readUint32(trex2, 4);
    const track = result[trackId];
    if (track) {
      track.default = {
        duration: readUint32(trex2, 12),
        flags: readUint32(trex2, 20)
      };
    }
  });
  return result;
}
function parseStsd(stsd) {
  const sampleEntries = stsd.subarray(8);
  const sampleEntriesEnd = sampleEntries.subarray(8 + 78);
  const fourCC = bin2str(sampleEntries.subarray(4, 8));
  let codec = fourCC;
  let supplemental;
  const encrypted = fourCC === "enca" || fourCC === "encv";
  if (encrypted) {
    const encBox = findBox(sampleEntries, [fourCC])[0];
    const encBoxChildren = encBox.subarray(fourCC === "enca" ? 28 : 78);
    const sinfs = findBox(encBoxChildren, ["sinf"]);
    sinfs.forEach((sinf) => {
      const schm = findBox(sinf, ["schm"])[0];
      if (schm) {
        const scheme = bin2str(schm.subarray(4, 8));
        if (scheme === "cbcs" || scheme === "cenc") {
          const frma = findBox(sinf, ["frma"])[0];
          if (frma) {
            codec = bin2str(frma);
          }
        }
      }
    });
  }
  const codecFourCC = codec;
  switch (codec) {
    case "avc1":
    case "avc2":
    case "avc3":
    case "avc4": {
      const avcCBox = findBox(sampleEntriesEnd, ["avcC"])[0];
      if (avcCBox && avcCBox.length > 3) {
        codec += "." + toHex(avcCBox[1]) + toHex(avcCBox[2]) + toHex(avcCBox[3]);
        supplemental = parseSupplementalDoViCodec(codecFourCC === "avc1" ? "dva1" : "dvav", sampleEntriesEnd);
      }
      break;
    }
    case "mp4a": {
      const codecBox = findBox(sampleEntries, [fourCC])[0];
      const esdsBox = findBox(codecBox.subarray(28), ["esds"])[0];
      if (esdsBox && esdsBox.length > 7) {
        let i = 4;
        if (esdsBox[i++] !== 3) {
          break;
        }
        i = skipBERInteger(esdsBox, i);
        i += 2;
        const flags = esdsBox[i++];
        if (flags & 128) {
          i += 2;
        }
        if (flags & 64) {
          i += esdsBox[i++];
        }
        if (esdsBox[i++] !== 4) {
          break;
        }
        i = skipBERInteger(esdsBox, i);
        const objectType = esdsBox[i++];
        if (objectType === 64) {
          codec += "." + toHex(objectType);
        } else {
          break;
        }
        i += 12;
        if (esdsBox[i++] !== 5) {
          break;
        }
        i = skipBERInteger(esdsBox, i);
        const firstByte = esdsBox[i++];
        let audioObjectType = (firstByte & 248) >> 3;
        if (audioObjectType === 31) {
          audioObjectType += 1 + ((firstByte & 7) << 3) + ((esdsBox[i] & 224) >> 5);
        }
        codec += "." + audioObjectType;
      }
      break;
    }
    case "hvc1":
    case "hev1": {
      const hvcCBox = findBox(sampleEntriesEnd, ["hvcC"])[0];
      if (hvcCBox && hvcCBox.length > 12) {
        const profileByte = hvcCBox[1];
        const profileSpace = ["", "A", "B", "C"][profileByte >> 6];
        const generalProfileIdc = profileByte & 31;
        const profileCompat = readUint32(hvcCBox, 2);
        const tierFlag = (profileByte & 32) >> 5 ? "H" : "L";
        const levelIDC = hvcCBox[12];
        const constraintIndicator = hvcCBox.subarray(6, 12);
        codec += "." + profileSpace + generalProfileIdc;
        codec += "." + reverse32BitInt(profileCompat).toString(16).toUpperCase();
        codec += "." + tierFlag + levelIDC;
        let constraintString = "";
        for (let i = constraintIndicator.length; i--; ) {
          const byte = constraintIndicator[i];
          if (byte || constraintString) {
            const encodedByte = byte.toString(16).toUpperCase();
            constraintString = "." + encodedByte + constraintString;
          }
        }
        codec += constraintString;
      }
      supplemental = parseSupplementalDoViCodec(codecFourCC == "hev1" ? "dvhe" : "dvh1", sampleEntriesEnd);
      break;
    }
    case "dvh1":
    case "dvhe":
    case "dvav":
    case "dva1":
    case "dav1": {
      codec = parseSupplementalDoViCodec(codec, sampleEntriesEnd) || codec;
      break;
    }
    case "vp09": {
      const vpcCBox = findBox(sampleEntriesEnd, ["vpcC"])[0];
      if (vpcCBox && vpcCBox.length > 6) {
        const profile = vpcCBox[4];
        const level = vpcCBox[5];
        const bitDepth = vpcCBox[6] >> 4 & 15;
        codec += "." + addLeadingZero(profile) + "." + addLeadingZero(level) + "." + addLeadingZero(bitDepth);
      }
      break;
    }
    case "av01": {
      const av1CBox = findBox(sampleEntriesEnd, ["av1C"])[0];
      if (av1CBox && av1CBox.length > 2) {
        const profile = av1CBox[1] >>> 5;
        const level = av1CBox[1] & 31;
        const tierFlag = av1CBox[2] >>> 7 ? "H" : "M";
        const highBitDepth = (av1CBox[2] & 64) >> 6;
        const twelveBit = (av1CBox[2] & 32) >> 5;
        const bitDepth = profile === 2 && highBitDepth ? twelveBit ? 12 : 10 : highBitDepth ? 10 : 8;
        const monochrome = (av1CBox[2] & 16) >> 4;
        const chromaSubsamplingX = (av1CBox[2] & 8) >> 3;
        const chromaSubsamplingY = (av1CBox[2] & 4) >> 2;
        const chromaSamplePosition = av1CBox[2] & 3;
        const colorPrimaries = 1;
        const transferCharacteristics = 1;
        const matrixCoefficients = 1;
        const videoFullRangeFlag = 0;
        codec += "." + profile + "." + addLeadingZero(level) + tierFlag + "." + addLeadingZero(bitDepth) + "." + monochrome + "." + chromaSubsamplingX + chromaSubsamplingY + chromaSamplePosition + "." + addLeadingZero(colorPrimaries) + "." + addLeadingZero(transferCharacteristics) + "." + addLeadingZero(matrixCoefficients) + "." + videoFullRangeFlag;
        supplemental = parseSupplementalDoViCodec("dav1", sampleEntriesEnd);
      }
      break;
    }
  }
  return {
    codec,
    encrypted,
    supplemental
  };
}
function parseSupplementalDoViCodec(fourCC, sampleEntriesEnd) {
  const dvvCResult = findBox(sampleEntriesEnd, ["dvvC"]);
  const dvXCBox = dvvCResult.length ? dvvCResult[0] : findBox(sampleEntriesEnd, ["dvcC"])[0];
  if (dvXCBox) {
    const doViProfile = dvXCBox[2] >> 1 & 127;
    const doViLevel = dvXCBox[2] << 5 & 32 | dvXCBox[3] >> 3 & 31;
    return fourCC + "." + addLeadingZero(doViProfile) + "." + addLeadingZero(doViLevel);
  }
}
function reverse32BitInt(val) {
  let result = 0;
  for (let i = 0; i < 32; i++) {
    result |= (val >> i & 1) << 32 - 1 - i;
  }
  return result >>> 0;
}
function skipBERInteger(bytes, i) {
  const limit = i + 5;
  while (bytes[i++] & 128 && i < limit) {
  }
  return i;
}
function toHex(x) {
  return ("0" + x.toString(16).toUpperCase()).slice(-2);
}
function addLeadingZero(num) {
  return (num < 10 ? "0" : "") + num;
}
function patchEncyptionData(initSegment, decryptdata) {
  if (!initSegment || !decryptdata) {
    return initSegment;
  }
  const keyId = decryptdata.keyId;
  if (keyId && decryptdata.isCommonEncryption) {
    const traks = findBox(initSegment, ["moov", "trak"]);
    traks.forEach((trak) => {
      const stsd = findBox(trak, ["mdia", "minf", "stbl", "stsd"])[0];
      const sampleEntries = stsd.subarray(8);
      let encBoxes = findBox(sampleEntries, ["enca"]);
      const isAudio = encBoxes.length > 0;
      if (!isAudio) {
        encBoxes = findBox(sampleEntries, ["encv"]);
      }
      encBoxes.forEach((enc) => {
        const encBoxChildren = isAudio ? enc.subarray(28) : enc.subarray(78);
        const sinfBoxes = findBox(encBoxChildren, ["sinf"]);
        sinfBoxes.forEach((sinf) => {
          const tenc = parseSinf(sinf);
          if (tenc) {
            const tencKeyId = tenc.subarray(8, 24);
            if (!tencKeyId.some((b) => b !== 0)) {
              logger.log(`[eme] Patching keyId in 'enc${isAudio ? "a" : "v"}>sinf>>tenc' box: ${Hex.hexDump(tencKeyId)} -> ${Hex.hexDump(keyId)}`);
              tenc.set(keyId, 8);
            }
          }
        });
      });
    });
  }
  return initSegment;
}
function parseSinf(sinf) {
  const schm = findBox(sinf, ["schm"])[0];
  if (schm) {
    const scheme = bin2str(schm.subarray(4, 8));
    if (scheme === "cbcs" || scheme === "cenc") {
      return findBox(sinf, ["schi", "tenc"])[0];
    }
  }
  return null;
}
function getSampleData(data, initData, logger2) {
  const tracks = {};
  const trafs = findBox(data, ["moof", "traf"]);
  for (let i = 0; i < trafs.length; i++) {
    const traf = trafs[i];
    const tfhd = findBox(traf, ["tfhd"])[0];
    const id = readUint32(tfhd, 4);
    const track = initData[id];
    if (!track) {
      continue;
    }
    const trackTimes = tracks[id] || (tracks[id] = {
      start: NaN,
      duration: 0,
      sampleCount: 0,
      timescale: track.timescale,
      type: track.type
    });
    const tfdt = findBox(traf, ["tfdt"])[0];
    if (tfdt) {
      const version2 = tfdt[0];
      let baseTime = readUint32(tfdt, 4);
      if (version2 === 1) {
        if (baseTime === UINT32_MAX$1) {
          logger2.warn(`[mp4-demuxer]: Ignoring assumed invalid signed 64-bit track fragment decode time`);
        } else {
          baseTime *= UINT32_MAX$1 + 1;
          baseTime += readUint32(tfdt, 8);
        }
      }
      if (isFiniteNumber(baseTime) && (!isFiniteNumber(trackTimes.start) || baseTime < trackTimes.start)) {
        trackTimes.start = baseTime;
      }
    }
    const trackDefault = track.default;
    const tfhdFlags = readUint32(tfhd, 0) | (trackDefault == null ? void 0 : trackDefault.flags);
    let defaultSampleDuration = (trackDefault == null ? void 0 : trackDefault.duration) || 0;
    if (tfhdFlags & 8) {
      if (tfhdFlags & 2) {
        defaultSampleDuration = readUint32(tfhd, 12);
      } else {
        defaultSampleDuration = readUint32(tfhd, 8);
      }
    }
    const truns = findBox(traf, ["trun"]);
    let sampleDTS = trackTimes.start || 0;
    let rawDuration = 0;
    let sampleDuration = defaultSampleDuration;
    for (let j = 0; j < truns.length; j++) {
      const trun = truns[j];
      const sampleCount = readUint32(trun, 4);
      const sampleIndex = trackTimes.sampleCount;
      trackTimes.sampleCount += sampleCount;
      const dataOffsetPresent = trun[3] & 1;
      const firstSampleFlagsPresent = trun[3] & 4;
      const sampleDurationPresent = trun[2] & 1;
      const sampleSizePresent = trun[2] & 2;
      const sampleFlagsPresent = trun[2] & 4;
      const sampleCompositionTimeOffsetPresent = trun[2] & 8;
      let offset = 8;
      let remaining = sampleCount;
      if (dataOffsetPresent) {
        offset += 4;
      }
      if (firstSampleFlagsPresent && sampleCount) {
        const isNonSyncSample = trun[offset + 1] & 1;
        if (!isNonSyncSample && trackTimes.keyFrameIndex === void 0) {
          trackTimes.keyFrameIndex = sampleIndex;
        }
        offset += 4;
        if (sampleDurationPresent) {
          sampleDuration = readUint32(trun, offset);
          offset += 4;
        } else {
          sampleDuration = defaultSampleDuration;
        }
        if (sampleSizePresent) {
          offset += 4;
        }
        if (sampleCompositionTimeOffsetPresent) {
          offset += 4;
        }
        sampleDTS += sampleDuration;
        rawDuration += sampleDuration;
        remaining--;
      }
      while (remaining--) {
        if (sampleDurationPresent) {
          sampleDuration = readUint32(trun, offset);
          offset += 4;
        } else {
          sampleDuration = defaultSampleDuration;
        }
        if (sampleSizePresent) {
          offset += 4;
        }
        if (sampleFlagsPresent) {
          const isNonSyncSample = trun[offset + 1] & 1;
          if (!isNonSyncSample) {
            if (trackTimes.keyFrameIndex === void 0) {
              trackTimes.keyFrameIndex = trackTimes.sampleCount - (remaining + 1);
              trackTimes.keyFrameStart = sampleDTS;
            }
          }
          offset += 4;
        }
        if (sampleCompositionTimeOffsetPresent) {
          offset += 4;
        }
        sampleDTS += sampleDuration;
        rawDuration += sampleDuration;
      }
      if (!rawDuration && defaultSampleDuration) {
        rawDuration += defaultSampleDuration * sampleCount;
      }
    }
    trackTimes.duration += rawDuration;
  }
  if (!Object.keys(tracks).some((trackId) => tracks[trackId].duration)) {
    let sidxMinStart = Infinity;
    let sidxMaxEnd = 0;
    const sidxs = findBox(data, ["sidx"]);
    for (let i = 0; i < sidxs.length; i++) {
      const sidx = parseSegmentIndex(sidxs[i]);
      if (sidx != null && sidx.references) {
        sidxMinStart = Math.min(sidxMinStart, sidx.earliestPresentationTime / sidx.timescale);
        const subSegmentDuration = sidx.references.reduce((dur, ref) => dur + ref.info.duration || 0, 0);
        sidxMaxEnd = Math.max(sidxMaxEnd, subSegmentDuration + sidx.earliestPresentationTime / sidx.timescale);
      }
    }
    if (sidxMaxEnd && isFiniteNumber(sidxMaxEnd)) {
      Object.keys(tracks).forEach((trackId) => {
        if (!tracks[trackId].duration) {
          tracks[trackId].duration = sidxMaxEnd * tracks[trackId].timescale - tracks[trackId].start;
        }
      });
    }
  }
  return tracks;
}
function segmentValidRange(data) {
  const segmentedRange = {
    valid: null,
    remainder: null
  };
  const moofs = findBox(data, ["moof"]);
  if (moofs.length < 2) {
    segmentedRange.remainder = data;
    return segmentedRange;
  }
  const last = moofs[moofs.length - 1];
  segmentedRange.valid = data.slice(0, last.byteOffset - 8);
  segmentedRange.remainder = data.slice(last.byteOffset - 8);
  return segmentedRange;
}
function appendUint8Array(data1, data2) {
  const temp = new Uint8Array(data1.length + data2.length);
  temp.set(data1);
  temp.set(data2, data1.length);
  return temp;
}
function parseSamples(timeOffset, track) {
  const seiSamples = [];
  const videoData = track.samples;
  const timescale = track.timescale;
  const trackId = track.id;
  let isHEVCFlavor = false;
  const moofs = findBox(videoData, ["moof"]);
  moofs.map((moof) => {
    const moofOffset = moof.byteOffset - 8;
    const trafs = findBox(moof, ["traf"]);
    trafs.map((traf) => {
      const baseTime = findBox(traf, ["tfdt"]).map((tfdt) => {
        const version2 = tfdt[0];
        let result = readUint32(tfdt, 4);
        if (version2 === 1) {
          result *= Math.pow(2, 32);
          result += readUint32(tfdt, 8);
        }
        return result / timescale;
      })[0];
      if (baseTime !== void 0) {
        timeOffset = baseTime;
      }
      return findBox(traf, ["tfhd"]).map((tfhd) => {
        const id = readUint32(tfhd, 4);
        const tfhdFlags = readUint32(tfhd, 0) & 16777215;
        const baseDataOffsetPresent = (tfhdFlags & 1) !== 0;
        const sampleDescriptionIndexPresent = (tfhdFlags & 2) !== 0;
        const defaultSampleDurationPresent = (tfhdFlags & 8) !== 0;
        let defaultSampleDuration = 0;
        const defaultSampleSizePresent = (tfhdFlags & 16) !== 0;
        let defaultSampleSize = 0;
        const defaultSampleFlagsPresent = (tfhdFlags & 32) !== 0;
        let tfhdOffset = 8;
        if (id === trackId) {
          if (baseDataOffsetPresent) {
            tfhdOffset += 8;
          }
          if (sampleDescriptionIndexPresent) {
            tfhdOffset += 4;
          }
          if (defaultSampleDurationPresent) {
            defaultSampleDuration = readUint32(tfhd, tfhdOffset);
            tfhdOffset += 4;
          }
          if (defaultSampleSizePresent) {
            defaultSampleSize = readUint32(tfhd, tfhdOffset);
            tfhdOffset += 4;
          }
          if (defaultSampleFlagsPresent) {
            tfhdOffset += 4;
          }
          if (track.type === "video") {
            isHEVCFlavor = isHEVC(track.codec);
          }
          findBox(traf, ["trun"]).map((trun) => {
            const version2 = trun[0];
            const flags = readUint32(trun, 0) & 16777215;
            const dataOffsetPresent = (flags & 1) !== 0;
            let dataOffset = 0;
            const firstSampleFlagsPresent = (flags & 4) !== 0;
            const sampleDurationPresent = (flags & 256) !== 0;
            let sampleDuration = 0;
            const sampleSizePresent = (flags & 512) !== 0;
            let sampleSize = 0;
            const sampleFlagsPresent = (flags & 1024) !== 0;
            const sampleCompositionOffsetsPresent = (flags & 2048) !== 0;
            let compositionOffset = 0;
            const sampleCount = readUint32(trun, 4);
            let trunOffset = 8;
            if (dataOffsetPresent) {
              dataOffset = readUint32(trun, trunOffset);
              trunOffset += 4;
            }
            if (firstSampleFlagsPresent) {
              trunOffset += 4;
            }
            let sampleOffset = dataOffset + moofOffset;
            for (let ix = 0; ix < sampleCount; ix++) {
              if (sampleDurationPresent) {
                sampleDuration = readUint32(trun, trunOffset);
                trunOffset += 4;
              } else {
                sampleDuration = defaultSampleDuration;
              }
              if (sampleSizePresent) {
                sampleSize = readUint32(trun, trunOffset);
                trunOffset += 4;
              } else {
                sampleSize = defaultSampleSize;
              }
              if (sampleFlagsPresent) {
                trunOffset += 4;
              }
              if (sampleCompositionOffsetsPresent) {
                if (version2 === 0) {
                  compositionOffset = readUint32(trun, trunOffset);
                } else {
                  compositionOffset = readSint32(trun, trunOffset);
                }
                trunOffset += 4;
              }
              if (track.type === ElementaryStreamTypes.VIDEO) {
                let naluTotalSize = 0;
                while (naluTotalSize < sampleSize) {
                  const naluSize = readUint32(videoData, sampleOffset);
                  sampleOffset += 4;
                  if (isSEIMessage(isHEVCFlavor, videoData[sampleOffset])) {
                    const data = videoData.subarray(sampleOffset, sampleOffset + naluSize);
                    parseSEIMessageFromNALu(data, isHEVCFlavor ? 2 : 1, timeOffset + compositionOffset / timescale, seiSamples);
                  }
                  sampleOffset += naluSize;
                  naluTotalSize += naluSize + 4;
                }
              }
              timeOffset += sampleDuration / timescale;
            }
          });
        }
      });
    });
  });
  return seiSamples;
}
function isHEVC(codec) {
  if (!codec) {
    return false;
  }
  const baseCodec = codec.substring(0, 4);
  return baseCodec === "hvc1" || baseCodec === "hev1" || baseCodec === "dvh1" || baseCodec === "dvhe";
}
function isSEIMessage(isHEVCFlavor, naluHeader) {
  if (isHEVCFlavor) {
    const naluType = naluHeader >> 1 & 63;
    return naluType === 39 || naluType === 40;
  } else {
    const naluType = naluHeader & 31;
    return naluType === 6;
  }
}
function parseSEIMessageFromNALu(unescapedData, headerSize, pts, samples) {
  const data = discardEPB(unescapedData);
  let seiPtr = 0;
  seiPtr += headerSize;
  let payloadType = 0;
  let payloadSize = 0;
  let b = 0;
  while (seiPtr < data.length) {
    payloadType = 0;
    do {
      if (seiPtr >= data.length) {
        break;
      }
      b = data[seiPtr++];
      payloadType += b;
    } while (b === 255);
    payloadSize = 0;
    do {
      if (seiPtr >= data.length) {
        break;
      }
      b = data[seiPtr++];
      payloadSize += b;
    } while (b === 255);
    const leftOver = data.length - seiPtr;
    let payPtr = seiPtr;
    if (payloadSize < leftOver) {
      seiPtr += payloadSize;
    } else if (payloadSize > leftOver) {
      logger.error(`Malformed SEI payload. ${payloadSize} is too small, only ${leftOver} bytes left to parse.`);
      break;
    }
    if (payloadType === 4) {
      const countryCode = data[payPtr++];
      if (countryCode === 181) {
        const providerCode = readUint16(data, payPtr);
        payPtr += 2;
        if (providerCode === 49) {
          const userStructure = readUint32(data, payPtr);
          payPtr += 4;
          if (userStructure === 1195456820) {
            const userDataType = data[payPtr++];
            if (userDataType === 3) {
              const firstByte = data[payPtr++];
              const totalCCs = 31 & firstByte;
              const enabled = 64 & firstByte;
              const totalBytes = enabled ? 2 + totalCCs * 3 : 0;
              const byteArray = new Uint8Array(totalBytes);
              if (enabled) {
                byteArray[0] = firstByte;
                for (let i = 1; i < totalBytes; i++) {
                  byteArray[i] = data[payPtr++];
                }
              }
              samples.push({
                type: userDataType,
                payloadType,
                pts,
                bytes: byteArray
              });
            }
          }
        }
      }
    } else if (payloadType === 5) {
      if (payloadSize > 16) {
        const uuidStrArray = [];
        for (let i = 0; i < 16; i++) {
          const _b = data[payPtr++].toString(16);
          uuidStrArray.push(_b.length == 1 ? "0" + _b : _b);
          if (i === 3 || i === 5 || i === 7 || i === 9) {
            uuidStrArray.push("-");
          }
        }
        const length = payloadSize - 16;
        const userDataBytes = new Uint8Array(length);
        for (let i = 0; i < length; i++) {
          userDataBytes[i] = data[payPtr++];
        }
        samples.push({
          payloadType,
          pts,
          uuid: uuidStrArray.join(""),
          userData: utf8ArrayToStr(userDataBytes),
          userDataBytes
        });
      }
    }
  }
}
function discardEPB(data) {
  const length = data.byteLength;
  const EPBPositions = [];
  let i = 1;
  while (i < length - 2) {
    if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 3) {
      EPBPositions.push(i + 2);
      i += 2;
    } else {
      i++;
    }
  }
  if (EPBPositions.length === 0) {
    return data;
  }
  const newLength = length - EPBPositions.length;
  const newData = new Uint8Array(newLength);
  let sourceIndex = 0;
  for (i = 0; i < newLength; sourceIndex++, i++) {
    if (sourceIndex === EPBPositions[0]) {
      sourceIndex++;
      EPBPositions.shift();
    }
    newData[i] = data[sourceIndex];
  }
  return newData;
}
function parseEmsg(data) {
  const version2 = data[0];
  let schemeIdUri = "";
  let value = "";
  let timeScale = 0;
  let presentationTimeDelta = 0;
  let presentationTime = 0;
  let eventDuration = 0;
  let id = 0;
  let offset = 0;
  if (version2 === 0) {
    while (bin2str(data.subarray(offset, offset + 1)) !== "\0") {
      schemeIdUri += bin2str(data.subarray(offset, offset + 1));
      offset += 1;
    }
    schemeIdUri += bin2str(data.subarray(offset, offset + 1));
    offset += 1;
    while (bin2str(data.subarray(offset, offset + 1)) !== "\0") {
      value += bin2str(data.subarray(offset, offset + 1));
      offset += 1;
    }
    value += bin2str(data.subarray(offset, offset + 1));
    offset += 1;
    timeScale = readUint32(data, 12);
    presentationTimeDelta = readUint32(data, 16);
    eventDuration = readUint32(data, 20);
    id = readUint32(data, 24);
    offset = 28;
  } else if (version2 === 1) {
    offset += 4;
    timeScale = readUint32(data, offset);
    offset += 4;
    const leftPresentationTime = readUint32(data, offset);
    offset += 4;
    const rightPresentationTime = readUint32(data, offset);
    offset += 4;
    presentationTime = 2 ** 32 * leftPresentationTime + rightPresentationTime;
    if (!isSafeInteger(presentationTime)) {
      presentationTime = Number.MAX_SAFE_INTEGER;
      logger.warn("Presentation time exceeds safe integer limit and wrapped to max safe integer in parsing emsg box");
    }
    eventDuration = readUint32(data, offset);
    offset += 4;
    id = readUint32(data, offset);
    offset += 4;
    while (bin2str(data.subarray(offset, offset + 1)) !== "\0") {
      schemeIdUri += bin2str(data.subarray(offset, offset + 1));
      offset += 1;
    }
    schemeIdUri += bin2str(data.subarray(offset, offset + 1));
    offset += 1;
    while (bin2str(data.subarray(offset, offset + 1)) !== "\0") {
      value += bin2str(data.subarray(offset, offset + 1));
      offset += 1;
    }
    value += bin2str(data.subarray(offset, offset + 1));
    offset += 1;
  }
  const payload = data.subarray(offset, data.byteLength);
  return {
    schemeIdUri,
    value,
    timeScale,
    presentationTime,
    presentationTimeDelta,
    eventDuration,
    id,
    payload
  };
}
function mp4Box(type, ...payload) {
  const len = payload.length;
  let size = 8;
  let i = len;
  while (i--) {
    size += payload[i].byteLength;
  }
  const result = new Uint8Array(size);
  result[0] = size >> 24 & 255;
  result[1] = size >> 16 & 255;
  result[2] = size >> 8 & 255;
  result[3] = size & 255;
  result.set(type, 4);
  for (i = 0, size = 8; i < len; i++) {
    result.set(payload[i], size);
    size += payload[i].byteLength;
  }
  return result;
}
function mp4pssh(systemId, keyids, data) {
  if (systemId.byteLength !== 16) {
    throw new RangeError("Invalid system id");
  }
  let version2;
  let kids;
  {
    version2 = 0;
    kids = new Uint8Array();
  }
  let kidCount;
  if (version2 > 0) {
    kidCount = new Uint8Array(4);
    if (keyids.length > 0) {
      new DataView(kidCount.buffer).setUint32(0, keyids.length, false);
    }
  } else {
    kidCount = new Uint8Array();
  }
  const dataSize = new Uint8Array(4);
  if (data && data.byteLength > 0) {
    new DataView(dataSize.buffer).setUint32(0, data.byteLength, false);
  }
  return mp4Box([112, 115, 115, 104], new Uint8Array([
    version2,
    0,
    0,
    0
  ]), systemId, kidCount, kids, dataSize, data || new Uint8Array());
}
var userAgentHevcSupportIsInaccurate = () => {
  return /\(Windows.+Firefox\//i.test(navigator.userAgent);
};
var sampleEntryCodesISO = {
  audio: {
    a3ds: 1,
    "ac-3": 0.95,
    "ac-4": 1,
    alac: 0.9,
    alaw: 1,
    dra1: 1,
    "dts+": 1,
    "dts-": 1,
    dtsc: 1,
    dtse: 1,
    dtsh: 1,
    "ec-3": 0.9,
    enca: 1,
    fLaC: 0.9,
    flac: 0.9,
    FLAC: 0.9,
    g719: 1,
    g726: 1,
    m4ae: 1,
    mha1: 1,
    mha2: 1,
    mhm1: 1,
    mhm2: 1,
    mlpa: 1,
    mp4a: 1,
    "raw ": 1,
    Opus: 1,
    opus: 1,
    samr: 1,
    sawb: 1,
    sawp: 1,
    sevc: 1,
    sqcp: 1,
    ssmv: 1,
    twos: 1,
    ulaw: 1
  },
  video: {
    avc1: 1,
    avc2: 1,
    avc3: 1,
    avc4: 1,
    avcp: 1,
    av01: 0.8,
    dav1: 0.8,
    drac: 1,
    dva1: 1,
    dvav: 1,
    dvh1: 0.7,
    dvhe: 0.7,
    encv: 1,
    hev1: 0.75,
    hvc1: 0.75,
    mjp2: 1,
    mp4v: 1,
    mvc1: 1,
    mvc2: 1,
    mvc3: 1,
    mvc4: 1,
    resv: 1,
    rv60: 1,
    s263: 1,
    svc1: 1,
    svc2: 1,
    "vc-1": 1,
    vp08: 1,
    vp09: 0.9
  },
  text: {
    stpp: 1,
    wvtt: 1
  }
};
function isCodecType(codec, type) {
  const typeCodes = sampleEntryCodesISO[type];
  return !!typeCodes && !!typeCodes[codec.slice(0, 4)];
}
function areCodecsMediaSourceSupported(codecs, type, preferManagedMediaSource = true) {
  return !codecs.split(",").some((codec) => !isCodecMediaSourceSupported(codec, type, preferManagedMediaSource));
}
function isCodecMediaSourceSupported(codec, type, preferManagedMediaSource = true) {
  var _MediaSource$isTypeSu;
  const MediaSource = getMediaSource(preferManagedMediaSource);
  return (_MediaSource$isTypeSu = MediaSource == null ? void 0 : MediaSource.isTypeSupported(mimeTypeForCodec(codec, type))) != null ? _MediaSource$isTypeSu : false;
}
function mimeTypeForCodec(codec, type) {
  return `${type}/mp4;codecs=${codec}`;
}
function videoCodecPreferenceValue(videoCodec) {
  if (videoCodec) {
    const fourCC = videoCodec.substring(0, 4);
    return sampleEntryCodesISO.video[fourCC];
  }
  return 2;
}
function codecsSetSelectionPreferenceValue(codecSet) {
  const limitedHevcSupport = userAgentHevcSupportIsInaccurate();
  return codecSet.split(",").reduce((num, fourCC) => {
    const lowerPriority = limitedHevcSupport && isHEVC(fourCC);
    const preferenceValue = lowerPriority ? 9 : sampleEntryCodesISO.video[fourCC];
    if (preferenceValue) {
      return (preferenceValue * 2 + num) / (num ? 3 : 2);
    }
    return (sampleEntryCodesISO.audio[fourCC] + num) / (num ? 2 : 1);
  }, 0);
}
var CODEC_COMPATIBLE_NAMES = {};
function getCodecCompatibleNameLower(lowerCaseCodec, preferManagedMediaSource = true) {
  if (CODEC_COMPATIBLE_NAMES[lowerCaseCodec]) {
    return CODEC_COMPATIBLE_NAMES[lowerCaseCodec];
  }
  const codecsToCheck = {
    flac: ["flac", "fLaC", "FLAC"],
    opus: ["opus", "Opus"],
    "mp4a.40.34": ["mp3"]
  }[lowerCaseCodec];
  for (let i = 0; i < codecsToCheck.length; i++) {
    var _getMediaSource;
    if (isCodecMediaSourceSupported(codecsToCheck[i], "audio", preferManagedMediaSource)) {
      CODEC_COMPATIBLE_NAMES[lowerCaseCodec] = codecsToCheck[i];
      return codecsToCheck[i];
    } else if (codecsToCheck[i] === "mp3" && (_getMediaSource = getMediaSource(preferManagedMediaSource)) != null && _getMediaSource.isTypeSupported("audio/mpeg")) {
      return "";
    }
  }
  return lowerCaseCodec;
}
var AUDIO_CODEC_REGEXP = /flac|opus|mp4a\.40\.34/i;
function getCodecCompatibleName(codec, preferManagedMediaSource = true) {
  return codec.replace(AUDIO_CODEC_REGEXP, (m) => getCodecCompatibleNameLower(m.toLowerCase(), preferManagedMediaSource));
}
function replaceVideoCodec(originalCodecs, newVideoCodec) {
  const codecs = [];
  if (originalCodecs) {
    const allCodecs = originalCodecs.split(",");
    for (let i = 0; i < allCodecs.length; i++) {
      if (!isCodecType(allCodecs[i], "video")) {
        codecs.push(allCodecs[i]);
      }
    }
  }
  if (newVideoCodec) {
    codecs.push(newVideoCodec);
  }
  return codecs.join(",");
}
function pickMostCompleteCodecName(parsedCodec, levelCodec) {
  if (parsedCodec && (parsedCodec.length > 4 || ["ac-3", "ec-3", "alac", "fLaC", "Opus"].indexOf(parsedCodec) !== -1)) {
    if (isCodecSupportedAsType(parsedCodec, "audio") || isCodecSupportedAsType(parsedCodec, "video")) {
      return parsedCodec;
    }
  }
  if (levelCodec) {
    const levelCodecs = levelCodec.split(",");
    if (levelCodecs.length > 1) {
      if (parsedCodec) {
        for (let i = levelCodecs.length; i--; ) {
          if (levelCodecs[i].substring(0, 4) === parsedCodec.substring(0, 4)) {
            return levelCodecs[i];
          }
        }
      }
      return levelCodecs[0];
    }
  }
  return levelCodec || parsedCodec;
}
function isCodecSupportedAsType(codec, type) {
  return isCodecType(codec, type) && isCodecMediaSourceSupported(codec, type);
}
function convertAVC1ToAVCOTI(videoCodecs) {
  const codecs = videoCodecs.split(",");
  for (let i = 0; i < codecs.length; i++) {
    const avcdata = codecs[i].split(".");
    if (avcdata.length > 2 && avcdata[0] === "avc1") {
      codecs[i] = `avc1.${parseInt(avcdata[1]).toString(16)}${("000" + parseInt(avcdata[2]).toString(16)).slice(-4)}`;
    }
  }
  return codecs.join(",");
}
function fillInMissingAV01Params(videoCodec) {
  if (videoCodec.startsWith("av01.")) {
    const av1params = videoCodec.split(".");
    const placeholders = ["0", "111", "01", "01", "01", "0"];
    for (let i = av1params.length; i > 4 && i < 10; i++) {
      av1params[i] = placeholders[i - 4];
    }
    return av1params.join(".");
  }
  return videoCodec;
}
function getM2TSSupportedAudioTypes(preferManagedMediaSource) {
  const MediaSource = getMediaSource(preferManagedMediaSource) || {
    isTypeSupported: () => false
  };
  return {
    mpeg: MediaSource.isTypeSupported("audio/mpeg"),
    mp3: MediaSource.isTypeSupported('audio/mp4; codecs="mp3"'),
    ac3: MediaSource.isTypeSupported('audio/mp4; codecs="ac-3"')
  };
}
function getCodecsForMimeType(mimeType) {
  return mimeType.replace(/^.+codecs=["']?([^"']+).*$/, "$1");
}
var SUPPORTED_INFO_DEFAULT = {
  supported: true,
  configurations: [],
  decodingInfoResults: [{
    supported: true,
    powerEfficient: true,
    smooth: true
  }]
};
function getUnsupportedResult(error, configurations) {
  return {
    supported: false,
    configurations,
    decodingInfoResults: [{
      supported: false,
      smooth: false,
      powerEfficient: false
    }],
    error
  };
}
function requiresMediaCapabilitiesDecodingInfo(level, audioTracksByGroup, currentVideoRange, currentFrameRate, currentBw, audioPreference) {
  const videoCodecs = level.videoCodec;
  const audioGroups = level.audioCodec ? level.audioGroups : null;
  const audioCodecPreference = audioPreference == null ? void 0 : audioPreference.audioCodec;
  const channelsPreference = audioPreference == null ? void 0 : audioPreference.channels;
  const maxChannels = channelsPreference ? parseInt(channelsPreference) : audioCodecPreference ? Infinity : 2;
  let audioChannels = null;
  if (audioGroups != null && audioGroups.length) {
    try {
      if (audioGroups.length === 1 && audioGroups[0]) {
        audioChannels = audioTracksByGroup.groups[audioGroups[0]].channels;
      } else {
        audioChannels = audioGroups.reduce((acc, groupId) => {
          if (groupId) {
            const audioTrackGroup = audioTracksByGroup.groups[groupId];
            if (!audioTrackGroup) {
              throw new Error(`Audio track group ${groupId} not found`);
            }
            Object.keys(audioTrackGroup.channels).forEach((key) => {
              acc[key] = (acc[key] || 0) + audioTrackGroup.channels[key];
            });
          }
          return acc;
        }, {
          2: 0
        });
      }
    } catch (error) {
      return true;
    }
  }
  return videoCodecs !== void 0 && (videoCodecs.split(",").some((videoCodec) => isHEVC(videoCodec)) || level.width > 1920 && level.height > 1088 || level.height > 1920 && level.width > 1088 || level.frameRate > Math.max(currentFrameRate, 30) || level.videoRange !== "SDR" && level.videoRange !== currentVideoRange || level.bitrate > Math.max(currentBw, 8e6)) || !!audioChannels && isFiniteNumber(maxChannels) && Object.keys(audioChannels).some((channels) => parseInt(channels) > maxChannels);
}
function getMediaDecodingInfoPromise(level, audioTracksByGroup, mediaCapabilities, cache = {}) {
  const videoCodecs = level.videoCodec;
  if (!videoCodecs && !level.audioCodec || !mediaCapabilities) {
    return Promise.resolve(SUPPORTED_INFO_DEFAULT);
  }
  const configurations = [];
  const videoDecodeList = makeVideoConfigurations(level);
  const videoCount = videoDecodeList.length;
  const audioDecodeList = makeAudioConfigurations(level, audioTracksByGroup, videoCount > 0);
  const audioCount = audioDecodeList.length;
  for (let i = videoCount || 1 * audioCount || 1; i--; ) {
    const configuration = {
      type: "media-source"
    };
    if (videoCount) {
      configuration.video = videoDecodeList[i % videoCount];
    }
    if (audioCount) {
      configuration.audio = audioDecodeList[i % audioCount];
      const audioBitrate = configuration.audio.bitrate;
      if (configuration.video && audioBitrate) {
        configuration.video.bitrate -= audioBitrate;
      }
    }
    configurations.push(configuration);
  }
  if (videoCodecs) {
    const ua = navigator.userAgent;
    if (videoCodecs.split(",").some((videoCodec) => isHEVC(videoCodec)) && userAgentHevcSupportIsInaccurate()) {
      return Promise.resolve(getUnsupportedResult(new Error(`Overriding Windows Firefox HEVC MediaCapabilities result based on user-agent string: (${ua})`), configurations));
    }
  }
  return Promise.all(configurations.map((configuration) => {
    const decodingInfoKey = getMediaDecodingInfoKey(configuration);
    return cache[decodingInfoKey] || (cache[decodingInfoKey] = mediaCapabilities.decodingInfo(configuration));
  })).then((decodingInfoResults) => ({
    supported: !decodingInfoResults.some((info) => !info.supported),
    configurations,
    decodingInfoResults
  })).catch((error) => ({
    supported: false,
    configurations,
    decodingInfoResults: [],
    error
  }));
}
function makeVideoConfigurations(level) {
  var _level$videoCodec;
  const videoCodecs = (_level$videoCodec = level.videoCodec) == null ? void 0 : _level$videoCodec.split(",");
  const bitrate = getVariantDecodingBitrate(level);
  const width = level.width || 640;
  const height = level.height || 480;
  const framerate = level.frameRate || 30;
  const videoRange = level.videoRange.toLowerCase();
  return videoCodecs ? videoCodecs.map((videoCodec) => {
    const videoConfiguration = {
      contentType: mimeTypeForCodec(fillInMissingAV01Params(videoCodec), "video"),
      width,
      height,
      bitrate,
      framerate
    };
    if (videoRange !== "sdr") {
      videoConfiguration.transferFunction = videoRange;
    }
    return videoConfiguration;
  }) : [];
}
function makeAudioConfigurations(level, audioTracksByGroup, hasVideo) {
  var _level$audioCodec;
  const audioCodecs = (_level$audioCodec = level.audioCodec) == null ? void 0 : _level$audioCodec.split(",");
  const combinedBitrate = getVariantDecodingBitrate(level);
  if (audioCodecs && level.audioGroups) {
    return level.audioGroups.reduce((configurations, audioGroupId) => {
      var _audioTracksByGroup$g;
      const tracks = audioGroupId ? (_audioTracksByGroup$g = audioTracksByGroup.groups[audioGroupId]) == null ? void 0 : _audioTracksByGroup$g.tracks : null;
      if (tracks) {
        return tracks.reduce((configs, audioTrack) => {
          if (audioTrack.groupId === audioGroupId) {
            const channelsNumber = parseFloat(audioTrack.channels || "");
            audioCodecs.forEach((audioCodec) => {
              const audioConfiguration = {
                contentType: mimeTypeForCodec(audioCodec, "audio"),
                bitrate: hasVideo ? estimatedAudioBitrate(audioCodec, combinedBitrate) : combinedBitrate
              };
              if (channelsNumber) {
                audioConfiguration.channels = "" + channelsNumber;
              }
              configs.push(audioConfiguration);
            });
          }
          return configs;
        }, configurations);
      }
      return configurations;
    }, []);
  }
  return [];
}
function estimatedAudioBitrate(audioCodec, levelBitrate) {
  if (levelBitrate <= 1) {
    return 1;
  }
  let audioBitrate = 128e3;
  if (audioCodec === "ec-3") {
    audioBitrate = 768e3;
  } else if (audioCodec === "ac-3") {
    audioBitrate = 64e4;
  }
  return Math.min(levelBitrate / 2, audioBitrate);
}
function getVariantDecodingBitrate(level) {
  return Math.ceil(Math.max(level.bitrate * 0.9, level.averageBitrate) / 1e3) * 1e3 || 1;
}
function getMediaDecodingInfoKey(config) {
  let key = "";
  const {
    audio,
    video
  } = config;
  if (video) {
    const codec = getCodecsForMimeType(video.contentType);
    key += `${codec}_r${video.height}x${video.width}f${Math.ceil(video.framerate)}${video.transferFunction || "sd"}_${Math.ceil(video.bitrate / 1e5)}`;
  }
  if (audio) {
    const codec = getCodecsForMimeType(audio.contentType);
    key += `${video ? "_" : ""}${codec}_c${audio.channels}`;
  }
  return key;
}
var HdcpLevels = ["NONE", "TYPE-0", "TYPE-1", null];
function isHdcpLevel(value) {
  return HdcpLevels.indexOf(value) > -1;
}
var VideoRangeValues = ["SDR", "PQ", "HLG"];
function isVideoRange(value) {
  return !!value && VideoRangeValues.indexOf(value) > -1;
}
var HlsSkip = {
  No: "",
  Yes: "YES",
  v2: "v2"
};
function getSkipValue(details) {
  const {
    canSkipUntil,
    canSkipDateRanges,
    age
  } = details;
  const playlistRecentEnough = age < canSkipUntil / 2;
  if (canSkipUntil && playlistRecentEnough) {
    if (canSkipDateRanges) {
      return HlsSkip.v2;
    }
    return HlsSkip.Yes;
  }
  return HlsSkip.No;
}
var HlsUrlParameters = class {
  constructor(msn, part, skip) {
    this.msn = void 0;
    this.part = void 0;
    this.skip = void 0;
    this.msn = msn;
    this.part = part;
    this.skip = skip;
  }
  addDirectives(uri) {
    const url = new self.URL(uri);
    if (this.msn !== void 0) {
      url.searchParams.set("_HLS_msn", this.msn.toString());
    }
    if (this.part !== void 0) {
      url.searchParams.set("_HLS_part", this.part.toString());
    }
    if (this.skip) {
      url.searchParams.set("_HLS_skip", this.skip);
    }
    return url.href;
  }
};
var Level = class {
  constructor(data) {
    this._attrs = void 0;
    this.audioCodec = void 0;
    this.bitrate = void 0;
    this.codecSet = void 0;
    this.url = void 0;
    this.frameRate = void 0;
    this.height = void 0;
    this.id = void 0;
    this.name = void 0;
    this.supplemental = void 0;
    this.videoCodec = void 0;
    this.width = void 0;
    this.details = void 0;
    this.fragmentError = 0;
    this.loadError = 0;
    this.loaded = void 0;
    this.realBitrate = 0;
    this.supportedPromise = void 0;
    this.supportedResult = void 0;
    this._avgBitrate = 0;
    this._audioGroups = void 0;
    this._subtitleGroups = void 0;
    this._urlId = 0;
    this.url = [data.url];
    this._attrs = [data.attrs];
    this.bitrate = data.bitrate;
    if (data.details) {
      this.details = data.details;
    }
    this.id = data.id || 0;
    this.name = data.name;
    this.width = data.width || 0;
    this.height = data.height || 0;
    this.frameRate = data.attrs.optionalFloat("FRAME-RATE", 0);
    this._avgBitrate = data.attrs.decimalInteger("AVERAGE-BANDWIDTH");
    this.audioCodec = data.audioCodec;
    this.videoCodec = data.videoCodec;
    this.codecSet = [data.videoCodec, data.audioCodec].filter((c) => !!c).map((s) => s.substring(0, 4)).join(",");
    if ("supplemental" in data) {
      var _data$supplemental;
      this.supplemental = data.supplemental;
      const supplementalVideo = (_data$supplemental = data.supplemental) == null ? void 0 : _data$supplemental.videoCodec;
      if (supplementalVideo && supplementalVideo !== data.videoCodec) {
        this.codecSet += `,${supplementalVideo.substring(0, 4)}`;
      }
    }
    this.addGroupId("audio", data.attrs.AUDIO);
    this.addGroupId("text", data.attrs.SUBTITLES);
  }
  get maxBitrate() {
    return Math.max(this.realBitrate, this.bitrate);
  }
  get averageBitrate() {
    return this._avgBitrate || this.realBitrate || this.bitrate;
  }
  get attrs() {
    return this._attrs[0];
  }
  get codecs() {
    return this.attrs.CODECS || "";
  }
  get pathwayId() {
    return this.attrs["PATHWAY-ID"] || ".";
  }
  get videoRange() {
    return this.attrs["VIDEO-RANGE"] || "SDR";
  }
  get score() {
    return this.attrs.optionalFloat("SCORE", 0);
  }
  get uri() {
    return this.url[0] || "";
  }
  hasAudioGroup(groupId) {
    return hasGroup(this._audioGroups, groupId);
  }
  hasSubtitleGroup(groupId) {
    return hasGroup(this._subtitleGroups, groupId);
  }
  get audioGroups() {
    return this._audioGroups;
  }
  get subtitleGroups() {
    return this._subtitleGroups;
  }
  addGroupId(type, groupId) {
    if (!groupId) {
      return;
    }
    if (type === "audio") {
      let audioGroups = this._audioGroups;
      if (!audioGroups) {
        audioGroups = this._audioGroups = [];
      }
      if (audioGroups.indexOf(groupId) === -1) {
        audioGroups.push(groupId);
      }
    } else if (type === "text") {
      let subtitleGroups = this._subtitleGroups;
      if (!subtitleGroups) {
        subtitleGroups = this._subtitleGroups = [];
      }
      if (subtitleGroups.indexOf(groupId) === -1) {
        subtitleGroups.push(groupId);
      }
    }
  }
  get urlId() {
    return 0;
  }
  set urlId(value) {
  }
  get audioGroupIds() {
    return this.audioGroups ? [this.audioGroupId] : void 0;
  }
  get textGroupIds() {
    return this.subtitleGroups ? [this.textGroupId] : void 0;
  }
  get audioGroupId() {
    var _this$audioGroups;
    return (_this$audioGroups = this.audioGroups) == null ? void 0 : _this$audioGroups[0];
  }
  get textGroupId() {
    var _this$subtitleGroups;
    return (_this$subtitleGroups = this.subtitleGroups) == null ? void 0 : _this$subtitleGroups[0];
  }
  addFallback() {
  }
};
function hasGroup(groups, groupId) {
  if (!groupId || !groups) {
    return false;
  }
  return groups.indexOf(groupId) !== -1;
}
function isHdrSupported() {
  if (typeof matchMedia === "function") {
    const mediaQueryList = matchMedia("(dynamic-range: high)");
    const badQuery = matchMedia("bad query");
    if (mediaQueryList.media !== badQuery.media) {
      return mediaQueryList.matches === true;
    }
  }
  return false;
}
function getVideoSelectionOptions(currentVideoRange, videoPreference) {
  let preferHDR = false;
  let allowedVideoRanges = [];
  if (currentVideoRange) {
    preferHDR = currentVideoRange !== "SDR";
    allowedVideoRanges = [currentVideoRange];
  }
  if (videoPreference) {
    allowedVideoRanges = videoPreference.allowedVideoRanges || VideoRangeValues.slice(0);
    const allowAutoPreferHDR = allowedVideoRanges.join("") !== "SDR" && !videoPreference.videoCodec;
    preferHDR = videoPreference.preferHDR !== void 0 ? videoPreference.preferHDR : allowAutoPreferHDR && isHdrSupported();
    if (!preferHDR) {
      allowedVideoRanges = ["SDR"];
    }
  }
  return {
    preferHDR,
    allowedVideoRanges
  };
}
var omitCircularRefsReplacer = (replacer) => {
  const known = /* @__PURE__ */ new WeakSet();
  return (_, value) => {
    if (replacer) {
      value = replacer(_, value);
    }
    if (typeof value === "object" && value !== null) {
      if (known.has(value)) {
        return;
      }
      known.add(value);
    }
    return value;
  };
};
var stringify = (object, replacer) => JSON.stringify(object, omitCircularRefsReplacer(replacer));
function getStartCodecTier(codecTiers, currentVideoRange, currentBw, audioPreference, videoPreference) {
  const codecSets = Object.keys(codecTiers);
  const channelsPreference = audioPreference == null ? void 0 : audioPreference.channels;
  const audioCodecPreference = audioPreference == null ? void 0 : audioPreference.audioCodec;
  const videoCodecPreference = videoPreference == null ? void 0 : videoPreference.videoCodec;
  const preferStereo = channelsPreference && parseInt(channelsPreference) === 2;
  let hasStereo = false;
  let hasCurrentVideoRange = false;
  let minHeight = Infinity;
  let minFramerate = Infinity;
  let minBitrate = Infinity;
  let minIndex = Infinity;
  let selectedScore = 0;
  let videoRanges = [];
  const {
    preferHDR,
    allowedVideoRanges
  } = getVideoSelectionOptions(currentVideoRange, videoPreference);
  for (let i = codecSets.length; i--; ) {
    const tier = codecTiers[codecSets[i]];
    hasStereo || (hasStereo = tier.channels[2] > 0);
    minHeight = Math.min(minHeight, tier.minHeight);
    minFramerate = Math.min(minFramerate, tier.minFramerate);
    minBitrate = Math.min(minBitrate, tier.minBitrate);
    const matchingVideoRanges = allowedVideoRanges.filter((range) => tier.videoRanges[range] > 0);
    if (matchingVideoRanges.length > 0) {
      hasCurrentVideoRange = true;
    }
  }
  minHeight = isFiniteNumber(minHeight) ? minHeight : 0;
  minFramerate = isFiniteNumber(minFramerate) ? minFramerate : 0;
  const maxHeight = Math.max(1080, minHeight);
  const maxFramerate = Math.max(30, minFramerate);
  minBitrate = isFiniteNumber(minBitrate) ? minBitrate : currentBw;
  currentBw = Math.max(minBitrate, currentBw);
  if (!hasCurrentVideoRange) {
    currentVideoRange = void 0;
  }
  const hasMultipleSets = codecSets.length > 1;
  const codecSet = codecSets.reduce((selected, candidate) => {
    const candidateTier = codecTiers[candidate];
    if (candidate === selected) {
      return selected;
    }
    videoRanges = hasCurrentVideoRange ? allowedVideoRanges.filter((range) => candidateTier.videoRanges[range] > 0) : [];
    if (hasMultipleSets) {
      if (candidateTier.minBitrate > currentBw) {
        logStartCodecCandidateIgnored(candidate, `min bitrate of ${candidateTier.minBitrate} > current estimate of ${currentBw}`);
        return selected;
      }
      if (!candidateTier.hasDefaultAudio) {
        logStartCodecCandidateIgnored(candidate, `no renditions with default or auto-select sound found`);
        return selected;
      }
      if (audioCodecPreference && candidate.indexOf(audioCodecPreference.substring(0, 4)) % 5 !== 0) {
        logStartCodecCandidateIgnored(candidate, `audio codec preference "${audioCodecPreference}" not found`);
        return selected;
      }
      if (channelsPreference && !preferStereo) {
        if (!candidateTier.channels[channelsPreference]) {
          logStartCodecCandidateIgnored(candidate, `no renditions with ${channelsPreference} channel sound found (channels options: ${Object.keys(candidateTier.channels)})`);
          return selected;
        }
      } else if ((!audioCodecPreference || preferStereo) && hasStereo && candidateTier.channels["2"] === 0) {
        logStartCodecCandidateIgnored(candidate, `no renditions with stereo sound found`);
        return selected;
      }
      if (candidateTier.minHeight > maxHeight) {
        logStartCodecCandidateIgnored(candidate, `min resolution of ${candidateTier.minHeight} > maximum of ${maxHeight}`);
        return selected;
      }
      if (candidateTier.minFramerate > maxFramerate) {
        logStartCodecCandidateIgnored(candidate, `min framerate of ${candidateTier.minFramerate} > maximum of ${maxFramerate}`);
        return selected;
      }
      if (!videoRanges.some((range) => candidateTier.videoRanges[range] > 0)) {
        logStartCodecCandidateIgnored(candidate, `no variants with VIDEO-RANGE of ${stringify(videoRanges)} found`);
        return selected;
      }
      if (videoCodecPreference && candidate.indexOf(videoCodecPreference.substring(0, 4)) % 5 !== 0) {
        logStartCodecCandidateIgnored(candidate, `video codec preference "${videoCodecPreference}" not found`);
        return selected;
      }
      if (candidateTier.maxScore < selectedScore) {
        logStartCodecCandidateIgnored(candidate, `max score of ${candidateTier.maxScore} < selected max of ${selectedScore}`);
        return selected;
      }
    }
    if (selected && (codecsSetSelectionPreferenceValue(candidate) >= codecsSetSelectionPreferenceValue(selected) || candidateTier.fragmentError > codecTiers[selected].fragmentError)) {
      return selected;
    }
    minIndex = candidateTier.minIndex;
    selectedScore = candidateTier.maxScore;
    return candidate;
  }, void 0);
  return {
    codecSet,
    videoRanges,
    preferHDR,
    minFramerate,
    minBitrate,
    minIndex
  };
}
function logStartCodecCandidateIgnored(codeSet, reason) {
  logger.log(`[abr] start candidates with "${codeSet}" ignored because ${reason}`);
}
function getAudioTracksByGroup(allAudioTracks) {
  return allAudioTracks.reduce((audioTracksByGroup, track) => {
    let trackGroup = audioTracksByGroup.groups[track.groupId];
    if (!trackGroup) {
      trackGroup = audioTracksByGroup.groups[track.groupId] = {
        tracks: [],
        channels: {
          2: 0
        },
        hasDefault: false,
        hasAutoSelect: false
      };
    }
    trackGroup.tracks.push(track);
    const channelsKey = track.channels || "2";
    trackGroup.channels[channelsKey] = (trackGroup.channels[channelsKey] || 0) + 1;
    trackGroup.hasDefault = trackGroup.hasDefault || track.default;
    trackGroup.hasAutoSelect = trackGroup.hasAutoSelect || track.autoselect;
    if (trackGroup.hasDefault) {
      audioTracksByGroup.hasDefaultAudio = true;
    }
    if (trackGroup.hasAutoSelect) {
      audioTracksByGroup.hasAutoSelectAudio = true;
    }
    return audioTracksByGroup;
  }, {
    hasDefaultAudio: false,
    hasAutoSelectAudio: false,
    groups: {}
  });
}
function getCodecTiers(levels, audioTracksByGroup, minAutoLevel, maxAutoLevel) {
  return levels.slice(minAutoLevel, maxAutoLevel + 1).reduce((tiers, level, index) => {
    if (!level.codecSet) {
      return tiers;
    }
    const audioGroups = level.audioGroups;
    let tier = tiers[level.codecSet];
    if (!tier) {
      tiers[level.codecSet] = tier = {
        minBitrate: Infinity,
        minHeight: Infinity,
        minFramerate: Infinity,
        minIndex: index,
        maxScore: 0,
        videoRanges: {
          SDR: 0
        },
        channels: {
          "2": 0
        },
        hasDefaultAudio: !audioGroups,
        fragmentError: 0
      };
    }
    tier.minBitrate = Math.min(tier.minBitrate, level.bitrate);
    const lesserWidthOrHeight = Math.min(level.height, level.width);
    tier.minHeight = Math.min(tier.minHeight, lesserWidthOrHeight);
    tier.minFramerate = Math.min(tier.minFramerate, level.frameRate);
    tier.minIndex = Math.min(tier.minIndex, index);
    tier.maxScore = Math.max(tier.maxScore, level.score);
    tier.fragmentError += level.fragmentError;
    tier.videoRanges[level.videoRange] = (tier.videoRanges[level.videoRange] || 0) + 1;
    if (audioGroups) {
      audioGroups.forEach((audioGroupId) => {
        if (!audioGroupId) {
          return;
        }
        const audioGroup = audioTracksByGroup.groups[audioGroupId];
        if (!audioGroup) {
          return;
        }
        tier.hasDefaultAudio = tier.hasDefaultAudio || audioTracksByGroup.hasDefaultAudio ? audioGroup.hasDefault : audioGroup.hasAutoSelect || !audioTracksByGroup.hasDefaultAudio && !audioTracksByGroup.hasAutoSelectAudio;
        Object.keys(audioGroup.channels).forEach((channels) => {
          tier.channels[channels] = (tier.channels[channels] || 0) + audioGroup.channels[channels];
        });
      });
    }
    return tiers;
  }, {});
}
function getBasicSelectionOption(option) {
  if (!option) {
    return option;
  }
  const {
    lang,
    assocLang,
    characteristics,
    channels,
    audioCodec
  } = option;
  return {
    lang,
    assocLang,
    characteristics,
    channels,
    audioCodec
  };
}
function findMatchingOption(option, tracks, matchPredicate) {
  if ("attrs" in option) {
    const index = tracks.indexOf(option);
    if (index !== -1) {
      return index;
    }
  }
  for (let i = 0; i < tracks.length; i++) {
    const track = tracks[i];
    if (matchesOption(option, track, matchPredicate)) {
      return i;
    }
  }
  return -1;
}
function matchesOption(option, track, matchPredicate) {
  const {
    groupId,
    name,
    lang,
    assocLang,
    default: isDefault
  } = option;
  const forced = option.forced;
  return (groupId === void 0 || track.groupId === groupId) && (name === void 0 || track.name === name) && (lang === void 0 || languagesMatch(lang, track.lang)) && (lang === void 0 || track.assocLang === assocLang) && (isDefault === void 0 || track.default === isDefault) && (forced === void 0 || track.forced === forced) && (!("characteristics" in option) || characteristicsMatch(option.characteristics || "", track.characteristics)) && (matchPredicate === void 0 || matchPredicate(option, track));
}
function languagesMatch(languageA, languageB = "--") {
  if (languageA.length === languageB.length) {
    return languageA === languageB;
  }
  return languageA.startsWith(languageB) || languageB.startsWith(languageA);
}
function characteristicsMatch(characteristicsA, characteristicsB = "") {
  const arrA = characteristicsA.split(",");
  const arrB = characteristicsB.split(",");
  return arrA.length === arrB.length && !arrA.some((el) => arrB.indexOf(el) === -1);
}
function audioMatchPredicate(option, track) {
  const {
    audioCodec,
    channels
  } = option;
  return (audioCodec === void 0 || (track.audioCodec || "").substring(0, 4) === audioCodec.substring(0, 4)) && (channels === void 0 || channels === (track.channels || "2"));
}
function findClosestLevelWithAudioGroup(option, levels, allAudioTracks, searchIndex, matchPredicate) {
  const currentLevel = levels[searchIndex];
  const variants = levels.reduce((variantMap, level, index) => {
    const uri = level.uri;
    const renditions2 = variantMap[uri] || (variantMap[uri] = []);
    renditions2.push(index);
    return variantMap;
  }, {});
  const renditions = variants[currentLevel.uri];
  if (renditions.length > 1) {
    searchIndex = Math.max.apply(Math, renditions);
  }
  const currentVideoRange = currentLevel.videoRange;
  const currentFrameRate = currentLevel.frameRate;
  const currentVideoCodec = currentLevel.codecSet.substring(0, 4);
  const matchingVideo = searchDownAndUpList(levels, searchIndex, (level) => {
    if (level.videoRange !== currentVideoRange || level.frameRate !== currentFrameRate || level.codecSet.substring(0, 4) !== currentVideoCodec) {
      return false;
    }
    const audioGroups = level.audioGroups;
    const tracks = allAudioTracks.filter((track) => !audioGroups || audioGroups.indexOf(track.groupId) !== -1);
    return findMatchingOption(option, tracks, matchPredicate) > -1;
  });
  if (matchingVideo > -1) {
    return matchingVideo;
  }
  return searchDownAndUpList(levels, searchIndex, (level) => {
    const audioGroups = level.audioGroups;
    const tracks = allAudioTracks.filter((track) => !audioGroups || audioGroups.indexOf(track.groupId) !== -1);
    return findMatchingOption(option, tracks, matchPredicate) > -1;
  });
}
function searchDownAndUpList(arr, searchIndex, predicate) {
  for (let i = searchIndex; i > -1; i--) {
    if (predicate(arr[i])) {
      return i;
    }
  }
  for (let i = searchIndex + 1; i < arr.length; i++) {
    if (predicate(arr[i])) {
      return i;
    }
  }
  return -1;
}
function useAlternateAudio(audioTrackUrl, hls) {
  var _hls$loadLevelObj;
  return !!audioTrackUrl && audioTrackUrl !== ((_hls$loadLevelObj = hls.loadLevelObj) == null ? void 0 : _hls$loadLevelObj.uri);
}
var AbrController = class extends Logger {
  constructor(_hls) {
    super("abr", _hls.logger);
    this.hls = void 0;
    this.lastLevelLoadSec = 0;
    this.lastLoadedFragLevel = -1;
    this.firstSelection = -1;
    this._nextAutoLevel = -1;
    this.nextAutoLevelKey = "";
    this.audioTracksByGroup = null;
    this.codecTiers = null;
    this.timer = -1;
    this.fragCurrent = null;
    this.partCurrent = null;
    this.bitrateTestDelay = 0;
    this.rebufferNotice = -1;
    this.supportedCache = {};
    this.bwEstimator = void 0;
    this._abandonRulesCheck = (levelLoaded) => {
      var _ref;
      const {
        fragCurrent: frag,
        partCurrent: part,
        hls
      } = this;
      const {
        autoLevelEnabled,
        media
      } = hls;
      if (!frag || !media) {
        return;
      }
      const now2 = performance.now();
      const stats = part ? part.stats : frag.stats;
      const duration = part ? part.duration : frag.duration;
      const timeLoading = now2 - stats.loading.start;
      const minAutoLevel = hls.minAutoLevel;
      const loadingFragForLevel = frag.level;
      const currentAutoLevel = this._nextAutoLevel;
      if (stats.aborted || stats.loaded && stats.loaded === stats.total || loadingFragForLevel <= minAutoLevel) {
        this.clearTimer();
        this._nextAutoLevel = -1;
        return;
      }
      if (!autoLevelEnabled) {
        return;
      }
      const fragBlockingSwitch = currentAutoLevel > -1 && currentAutoLevel !== loadingFragForLevel;
      const levelChange = !!levelLoaded || fragBlockingSwitch;
      if (!levelChange && (media.paused || !media.playbackRate || !media.readyState)) {
        return;
      }
      const bufferInfo = hls.mainForwardBufferInfo;
      if (!levelChange && bufferInfo === null) {
        return;
      }
      const ttfbEstimate = this.bwEstimator.getEstimateTTFB();
      const playbackRate = Math.abs(media.playbackRate);
      if (timeLoading <= Math.max(ttfbEstimate, 1e3 * (duration / (playbackRate * 2)))) {
        return;
      }
      const bufferStarvationDelay = bufferInfo ? bufferInfo.len / playbackRate : 0;
      const ttfb = stats.loading.first ? stats.loading.first - stats.loading.start : -1;
      const loadedFirstByte = stats.loaded && ttfb > -1;
      const bwEstimate = this.getBwEstimate();
      const levels = hls.levels;
      const level = levels[loadingFragForLevel];
      const expectedLen = Math.max(stats.loaded, Math.round(duration * (frag.bitrate || level.averageBitrate) / 8));
      let timeStreaming = loadedFirstByte ? timeLoading - ttfb : timeLoading;
      if (timeStreaming < 1 && loadedFirstByte) {
        timeStreaming = Math.min(timeLoading, stats.loaded * 8 / bwEstimate);
      }
      const loadRate = loadedFirstByte ? stats.loaded * 1e3 / timeStreaming : 0;
      const ttfbSeconds = ttfbEstimate / 1e3;
      const fragLoadedDelay = loadRate ? (expectedLen - stats.loaded) / loadRate : expectedLen * 8 / bwEstimate + ttfbSeconds;
      if (fragLoadedDelay <= bufferStarvationDelay) {
        return;
      }
      const bwe = loadRate ? loadRate * 8 : bwEstimate;
      const live = ((_ref = (levelLoaded == null ? void 0 : levelLoaded.details) || this.hls.latestLevelDetails) == null ? void 0 : _ref.live) === true;
      const abrBandWidthUpFactor = this.hls.config.abrBandWidthUpFactor;
      let fragLevelNextLoadedDelay = Number.POSITIVE_INFINITY;
      let nextLoadLevel;
      for (nextLoadLevel = loadingFragForLevel - 1; nextLoadLevel > minAutoLevel; nextLoadLevel--) {
        const levelNextBitrate = levels[nextLoadLevel].maxBitrate;
        const requiresLevelLoad = !levels[nextLoadLevel].details || live;
        fragLevelNextLoadedDelay = this.getTimeToLoadFrag(ttfbSeconds, bwe, duration * levelNextBitrate, requiresLevelLoad);
        if (fragLevelNextLoadedDelay < Math.min(bufferStarvationDelay, duration + ttfbSeconds)) {
          break;
        }
      }
      if (fragLevelNextLoadedDelay >= fragLoadedDelay) {
        return;
      }
      if (fragLevelNextLoadedDelay > duration * 10) {
        return;
      }
      if (loadedFirstByte) {
        this.bwEstimator.sample(timeLoading - Math.min(ttfbEstimate, ttfb), stats.loaded);
      } else {
        this.bwEstimator.sampleTTFB(timeLoading);
      }
      const nextLoadLevelBitrate = levels[nextLoadLevel].maxBitrate;
      if (this.getBwEstimate() * abrBandWidthUpFactor > nextLoadLevelBitrate) {
        this.resetEstimator(nextLoadLevelBitrate);
      }
      const bestSwitchLevel = this.findBestLevel(nextLoadLevelBitrate, minAutoLevel, nextLoadLevel, 0, bufferStarvationDelay, 1, 1);
      if (bestSwitchLevel > -1) {
        nextLoadLevel = bestSwitchLevel;
      }
      this.warn(`Fragment ${frag.sn}${part ? " part " + part.index : ""} of level ${loadingFragForLevel} is loading too slowly;
      Fragment duration: ${frag.duration.toFixed(3)}
      Time to underbuffer: ${bufferStarvationDelay.toFixed(3)} s
      Estimated load time for current fragment: ${fragLoadedDelay.toFixed(3)} s
      Estimated load time for down switch fragment: ${fragLevelNextLoadedDelay.toFixed(3)} s
      TTFB estimate: ${ttfb | 0} ms
      Current BW estimate: ${isFiniteNumber(bwEstimate) ? bwEstimate | 0 : "Unknown"} bps
      New BW estimate: ${this.getBwEstimate() | 0} bps
      Switching to level ${nextLoadLevel} @ ${nextLoadLevelBitrate | 0} bps`);
      hls.nextLoadLevel = hls.nextAutoLevel = nextLoadLevel;
      this.clearTimer();
      const abortAndSwitch = () => {
        this.clearTimer();
        if (this.fragCurrent === frag && this.hls.loadLevel === nextLoadLevel && nextLoadLevel > 0) {
          const bufferStarvationDelay2 = this.getStarvationDelay();
          this.warn(`Aborting inflight request ${nextLoadLevel > 0 ? "and switching down" : ""}
      Fragment duration: ${frag.duration.toFixed(3)} s
      Time to underbuffer: ${bufferStarvationDelay2.toFixed(3)} s`);
          frag.abortRequests();
          this.fragCurrent = this.partCurrent = null;
          if (nextLoadLevel > minAutoLevel) {
            let lowestSwitchLevel = this.findBestLevel(this.hls.levels[minAutoLevel].bitrate, minAutoLevel, nextLoadLevel, 0, bufferStarvationDelay2, 1, 1);
            if (lowestSwitchLevel === -1) {
              lowestSwitchLevel = minAutoLevel;
            }
            this.hls.nextLoadLevel = this.hls.nextAutoLevel = lowestSwitchLevel;
            this.resetEstimator(this.hls.levels[lowestSwitchLevel].bitrate);
          }
        }
      };
      if (fragBlockingSwitch || fragLoadedDelay > fragLevelNextLoadedDelay * 2) {
        abortAndSwitch();
      } else {
        this.timer = self.setInterval(abortAndSwitch, fragLevelNextLoadedDelay * 1e3);
      }
      hls.trigger(Events.FRAG_LOAD_EMERGENCY_ABORTED, {
        frag,
        part,
        stats
      });
    };
    this.hls = _hls;
    this.bwEstimator = this.initEstimator();
    this.registerListeners();
  }
  resetEstimator(abrEwmaDefaultEstimate) {
    if (abrEwmaDefaultEstimate) {
      this.log(`setting initial bwe to ${abrEwmaDefaultEstimate}`);
      this.hls.config.abrEwmaDefaultEstimate = abrEwmaDefaultEstimate;
    }
    this.firstSelection = -1;
    this.bwEstimator = this.initEstimator();
  }
  initEstimator() {
    const config = this.hls.config;
    return new EwmaBandWidthEstimator(config.abrEwmaSlowVoD, config.abrEwmaFastVoD, config.abrEwmaDefaultEstimate);
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
    hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.on(Events.MAX_AUTO_LEVEL_UPDATED, this.onMaxAutoLevelUpdated, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    if (!hls) {
      return;
    }
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
    hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.off(Events.MAX_AUTO_LEVEL_UPDATED, this.onMaxAutoLevelUpdated, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  destroy() {
    this.unregisterListeners();
    this.clearTimer();
    this.hls = this._abandonRulesCheck = this.supportedCache = null;
    this.fragCurrent = this.partCurrent = null;
  }
  onManifestLoading(event, data) {
    this.lastLoadedFragLevel = -1;
    this.firstSelection = -1;
    this.lastLevelLoadSec = 0;
    this.supportedCache = {};
    this.fragCurrent = this.partCurrent = null;
    this.onLevelsUpdated();
    this.clearTimer();
  }
  onLevelsUpdated() {
    if (this.lastLoadedFragLevel > -1 && this.fragCurrent) {
      this.lastLoadedFragLevel = this.fragCurrent.level;
    }
    this._nextAutoLevel = -1;
    this.onMaxAutoLevelUpdated();
    this.codecTiers = null;
    this.audioTracksByGroup = null;
  }
  onMaxAutoLevelUpdated() {
    this.firstSelection = -1;
    this.nextAutoLevelKey = "";
  }
  onFragLoading(event, data) {
    const frag = data.frag;
    if (this.ignoreFragment(frag)) {
      return;
    }
    if (!frag.bitrateTest) {
      var _data$part;
      this.fragCurrent = frag;
      this.partCurrent = (_data$part = data.part) != null ? _data$part : null;
    }
    this.clearTimer();
    this.timer = self.setInterval(this._abandonRulesCheck, 100);
  }
  onLevelSwitching(event, data) {
    this.clearTimer();
  }
  onError(event, data) {
    if (data.fatal) {
      return;
    }
    switch (data.details) {
      case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
      case ErrorDetails.BUFFER_APPEND_ERROR:
        this.lastLoadedFragLevel = -1;
        this.firstSelection = -1;
        break;
      case ErrorDetails.FRAG_LOAD_TIMEOUT: {
        const frag = data.frag;
        const {
          fragCurrent,
          partCurrent: part
        } = this;
        if (frag && fragCurrent && frag.sn === fragCurrent.sn && frag.level === fragCurrent.level) {
          const now2 = performance.now();
          const stats = part ? part.stats : frag.stats;
          const timeLoading = now2 - stats.loading.start;
          const ttfb = stats.loading.first ? stats.loading.first - stats.loading.start : -1;
          const loadedFirstByte = stats.loaded && ttfb > -1;
          if (loadedFirstByte) {
            const ttfbEstimate = this.bwEstimator.getEstimateTTFB();
            this.bwEstimator.sample(timeLoading - Math.min(ttfbEstimate, ttfb), stats.loaded);
          } else {
            this.bwEstimator.sampleTTFB(timeLoading);
          }
        }
        break;
      }
    }
  }
  getTimeToLoadFrag(timeToFirstByteSec, bandwidth, fragSizeBits, isSwitch) {
    const fragLoadSec = timeToFirstByteSec + fragSizeBits / bandwidth;
    const playlistLoadSec = isSwitch ? timeToFirstByteSec + this.lastLevelLoadSec : 0;
    return fragLoadSec + playlistLoadSec;
  }
  onLevelLoaded(event, data) {
    const config = this.hls.config;
    const {
      loading
    } = data.stats;
    const timeLoadingMs = loading.end - loading.first;
    if (isFiniteNumber(timeLoadingMs)) {
      this.lastLevelLoadSec = timeLoadingMs / 1e3;
    }
    if (data.details.live) {
      this.bwEstimator.update(config.abrEwmaSlowLive, config.abrEwmaFastLive);
    } else {
      this.bwEstimator.update(config.abrEwmaSlowVoD, config.abrEwmaFastVoD);
    }
    if (this.timer > -1) {
      this._abandonRulesCheck(data.levelInfo);
    }
  }
  onFragLoaded(event, {
    frag,
    part
  }) {
    const stats = part ? part.stats : frag.stats;
    if (frag.type === PlaylistLevelType.MAIN) {
      this.bwEstimator.sampleTTFB(stats.loading.first - stats.loading.start);
    }
    if (this.ignoreFragment(frag)) {
      return;
    }
    this.clearTimer();
    if (frag.level === this._nextAutoLevel) {
      this._nextAutoLevel = -1;
    }
    this.firstSelection = -1;
    if (this.hls.config.abrMaxWithRealBitrate) {
      const duration = part ? part.duration : frag.duration;
      const level = this.hls.levels[frag.level];
      const loadedBytes = (level.loaded ? level.loaded.bytes : 0) + stats.loaded;
      const loadedDuration = (level.loaded ? level.loaded.duration : 0) + duration;
      level.loaded = {
        bytes: loadedBytes,
        duration: loadedDuration
      };
      level.realBitrate = Math.round(8 * loadedBytes / loadedDuration);
    }
    if (frag.bitrateTest) {
      const fragBufferedData = {
        stats,
        frag,
        part,
        id: frag.type
      };
      this.onFragBuffered(Events.FRAG_BUFFERED, fragBufferedData);
      frag.bitrateTest = false;
    } else {
      this.lastLoadedFragLevel = frag.level;
    }
  }
  onFragBuffered(event, data) {
    const {
      frag,
      part
    } = data;
    const stats = part != null && part.stats.loaded ? part.stats : frag.stats;
    if (stats.aborted) {
      return;
    }
    if (this.ignoreFragment(frag)) {
      return;
    }
    const processingMs = stats.parsing.end - stats.loading.start - Math.min(stats.loading.first - stats.loading.start, this.bwEstimator.getEstimateTTFB());
    this.bwEstimator.sample(processingMs, stats.loaded);
    stats.bwEstimate = this.getBwEstimate();
    if (frag.bitrateTest) {
      this.bitrateTestDelay = processingMs / 1e3;
    } else {
      this.bitrateTestDelay = 0;
    }
  }
  ignoreFragment(frag) {
    return frag.type !== PlaylistLevelType.MAIN || frag.sn === "initSegment";
  }
  clearTimer() {
    if (this.timer > -1) {
      self.clearInterval(this.timer);
      this.timer = -1;
    }
  }
  get firstAutoLevel() {
    const {
      maxAutoLevel,
      minAutoLevel
    } = this.hls;
    const bwEstimate = this.getBwEstimate();
    const maxStartDelay = this.hls.config.maxStarvationDelay;
    const abrAutoLevel = this.findBestLevel(bwEstimate, minAutoLevel, maxAutoLevel, 0, maxStartDelay, 1, 1);
    if (abrAutoLevel > -1) {
      return abrAutoLevel;
    }
    const firstLevel = this.hls.firstLevel;
    const clamped = Math.min(Math.max(firstLevel, minAutoLevel), maxAutoLevel);
    this.warn(`Could not find best starting auto level. Defaulting to first in playlist ${firstLevel} clamped to ${clamped}`);
    return clamped;
  }
  get forcedAutoLevel() {
    if (this.nextAutoLevelKey) {
      return -1;
    }
    return this._nextAutoLevel;
  }
  get nextAutoLevel() {
    const forcedAutoLevel = this.forcedAutoLevel;
    const bwEstimator = this.bwEstimator;
    const useEstimate = bwEstimator.canEstimate();
    const loadedFirstFrag = this.lastLoadedFragLevel > -1;
    if (forcedAutoLevel !== -1 && (!useEstimate || !loadedFirstFrag || this.nextAutoLevelKey === this.getAutoLevelKey())) {
      return forcedAutoLevel;
    }
    const nextABRAutoLevel = useEstimate && loadedFirstFrag ? this.getNextABRAutoLevel() : this.firstAutoLevel;
    if (forcedAutoLevel !== -1) {
      const levels = this.hls.levels;
      if (levels.length > Math.max(forcedAutoLevel, nextABRAutoLevel) && levels[forcedAutoLevel].loadError <= levels[nextABRAutoLevel].loadError) {
        return forcedAutoLevel;
      }
    }
    this._nextAutoLevel = nextABRAutoLevel;
    this.nextAutoLevelKey = this.getAutoLevelKey();
    return nextABRAutoLevel;
  }
  getAutoLevelKey() {
    return `${this.getBwEstimate()}_${this.getStarvationDelay().toFixed(2)}`;
  }
  getNextABRAutoLevel() {
    const {
      fragCurrent,
      partCurrent,
      hls
    } = this;
    if (hls.levels.length <= 1) {
      return hls.loadLevel;
    }
    const {
      maxAutoLevel,
      config,
      minAutoLevel
    } = hls;
    const currentFragDuration = partCurrent ? partCurrent.duration : fragCurrent ? fragCurrent.duration : 0;
    const avgbw = this.getBwEstimate();
    const bufferStarvationDelay = this.getStarvationDelay();
    let bwFactor = config.abrBandWidthFactor;
    let bwUpFactor = config.abrBandWidthUpFactor;
    if (bufferStarvationDelay) {
      const _bestLevel = this.findBestLevel(avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, 0, bwFactor, bwUpFactor);
      if (_bestLevel >= 0) {
        this.rebufferNotice = -1;
        return _bestLevel;
      }
    }
    let maxStarvationDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxStarvationDelay) : config.maxStarvationDelay;
    if (!bufferStarvationDelay) {
      const bitrateTestDelay = this.bitrateTestDelay;
      if (bitrateTestDelay) {
        const maxLoadingDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxLoadingDelay) : config.maxLoadingDelay;
        maxStarvationDelay = maxLoadingDelay - bitrateTestDelay;
        this.info(`bitrate test took ${Math.round(1e3 * bitrateTestDelay)}ms, set first fragment max fetchDuration to ${Math.round(1e3 * maxStarvationDelay)} ms`);
        bwFactor = bwUpFactor = 1;
      }
    }
    const bestLevel = this.findBestLevel(avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, maxStarvationDelay, bwFactor, bwUpFactor);
    if (this.rebufferNotice !== bestLevel) {
      this.rebufferNotice = bestLevel;
      this.info(`${bufferStarvationDelay ? "rebuffering expected" : "buffer is empty"}, optimal quality level ${bestLevel}`);
    }
    if (bestLevel > -1) {
      return bestLevel;
    }
    const minLevel = hls.levels[minAutoLevel];
    const autoLevel = hls.loadLevelObj;
    if (autoLevel && (minLevel == null ? void 0 : minLevel.bitrate) < autoLevel.bitrate) {
      return minAutoLevel;
    }
    return hls.loadLevel;
  }
  getStarvationDelay() {
    const hls = this.hls;
    const media = hls.media;
    if (!media) {
      return Infinity;
    }
    const playbackRate = media && media.playbackRate !== 0 ? Math.abs(media.playbackRate) : 1;
    const bufferInfo = hls.mainForwardBufferInfo;
    return (bufferInfo ? bufferInfo.len : 0) / playbackRate;
  }
  getBwEstimate() {
    return this.bwEstimator.canEstimate() ? this.bwEstimator.getEstimate() : this.hls.config.abrEwmaDefaultEstimate;
  }
  findBestLevel(currentBw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, maxStarvationDelay, bwFactor, bwUpFactor) {
    var _this$hls$latestLevel;
    const maxFetchDuration = bufferStarvationDelay + maxStarvationDelay;
    const lastLoadedFragLevel = this.lastLoadedFragLevel;
    const selectionBaseLevel = lastLoadedFragLevel === -1 ? this.hls.firstLevel : lastLoadedFragLevel;
    const {
      fragCurrent,
      partCurrent
    } = this;
    const {
      levels,
      allAudioTracks,
      loadLevel,
      config
    } = this.hls;
    if (levels.length === 1) {
      return 0;
    }
    const level = levels[selectionBaseLevel];
    const live = !!((_this$hls$latestLevel = this.hls.latestLevelDetails) != null && _this$hls$latestLevel.live);
    const firstSelection = loadLevel === -1 || lastLoadedFragLevel === -1;
    let currentCodecSet;
    let currentVideoRange = "SDR";
    let currentFrameRate = (level == null ? void 0 : level.frameRate) || 0;
    const {
      audioPreference,
      videoPreference
    } = config;
    const audioTracksByGroup = this.audioTracksByGroup || (this.audioTracksByGroup = getAudioTracksByGroup(allAudioTracks));
    let minStartIndex = -1;
    if (firstSelection) {
      if (this.firstSelection !== -1) {
        return this.firstSelection;
      }
      const codecTiers = this.codecTiers || (this.codecTiers = getCodecTiers(levels, audioTracksByGroup, minAutoLevel, maxAutoLevel));
      const startTier = getStartCodecTier(codecTiers, currentVideoRange, currentBw, audioPreference, videoPreference);
      const {
        codecSet,
        videoRanges,
        minFramerate,
        minBitrate,
        minIndex,
        preferHDR
      } = startTier;
      minStartIndex = minIndex;
      currentCodecSet = codecSet;
      currentVideoRange = preferHDR ? videoRanges[videoRanges.length - 1] : videoRanges[0];
      currentFrameRate = minFramerate;
      currentBw = Math.max(currentBw, minBitrate);
      this.log(`picked start tier ${stringify(startTier)}`);
    } else {
      currentCodecSet = level == null ? void 0 : level.codecSet;
      currentVideoRange = level == null ? void 0 : level.videoRange;
    }
    const currentFragDuration = partCurrent ? partCurrent.duration : fragCurrent ? fragCurrent.duration : 0;
    const ttfbEstimateSec = this.bwEstimator.getEstimateTTFB() / 1e3;
    const levelsSkipped = [];
    for (let i = maxAutoLevel; i >= minAutoLevel; i--) {
      var _levelInfo$supportedR, _levelInfo$supportedR2;
      const levelInfo = levels[i];
      const upSwitch = i > selectionBaseLevel;
      if (!levelInfo) {
        continue;
      }
      if (config.useMediaCapabilities && !levelInfo.supportedResult && !levelInfo.supportedPromise) {
        const mediaCapabilities = navigator.mediaCapabilities;
        if (typeof (mediaCapabilities == null ? void 0 : mediaCapabilities.decodingInfo) === "function" && requiresMediaCapabilitiesDecodingInfo(levelInfo, audioTracksByGroup, currentVideoRange, currentFrameRate, currentBw, audioPreference)) {
          levelInfo.supportedPromise = getMediaDecodingInfoPromise(levelInfo, audioTracksByGroup, mediaCapabilities, this.supportedCache);
          levelInfo.supportedPromise.then((decodingInfo) => {
            if (!this.hls) {
              return;
            }
            levelInfo.supportedResult = decodingInfo;
            const levels2 = this.hls.levels;
            const index = levels2.indexOf(levelInfo);
            if (decodingInfo.error) {
              this.warn(`MediaCapabilities decodingInfo error: "${decodingInfo.error}" for level ${index} ${stringify(decodingInfo)}`);
            } else if (!decodingInfo.supported) {
              this.warn(`Unsupported MediaCapabilities decodingInfo result for level ${index} ${stringify(decodingInfo)}`);
              if (index > -1 && levels2.length > 1) {
                this.log(`Removing unsupported level ${index}`);
                this.hls.removeLevel(index);
                if (this.hls.loadLevel === -1) {
                  this.hls.nextLoadLevel = 0;
                }
              }
            } else if (decodingInfo.decodingInfoResults.some((info) => info.smooth === false || info.powerEfficient === false)) {
              this.log(`MediaCapabilities decodingInfo for level ${index} not smooth or powerEfficient: ${stringify(decodingInfo)}`);
            }
          });
        } else {
          levelInfo.supportedResult = SUPPORTED_INFO_DEFAULT;
        }
      }
      if (currentCodecSet && levelInfo.codecSet !== currentCodecSet || currentVideoRange && levelInfo.videoRange !== currentVideoRange || upSwitch && currentFrameRate > levelInfo.frameRate || !upSwitch && currentFrameRate > 0 && currentFrameRate < levelInfo.frameRate || (_levelInfo$supportedR = levelInfo.supportedResult) != null && (_levelInfo$supportedR2 = _levelInfo$supportedR.decodingInfoResults) != null && _levelInfo$supportedR2.some((info) => info.smooth === false)) {
        if (!firstSelection || i !== minStartIndex) {
          levelsSkipped.push(i);
          continue;
        }
      }
      const levelDetails = levelInfo.details;
      const avgDuration = (partCurrent ? levelDetails == null ? void 0 : levelDetails.partTarget : levelDetails == null ? void 0 : levelDetails.averagetargetduration) || currentFragDuration;
      let adjustedbw;
      if (!upSwitch) {
        adjustedbw = bwFactor * currentBw;
      } else {
        adjustedbw = bwUpFactor * currentBw;
      }
      const bitrate = currentFragDuration && bufferStarvationDelay >= currentFragDuration * 2 && maxStarvationDelay === 0 ? levelInfo.averageBitrate : levelInfo.maxBitrate;
      const fetchDuration = this.getTimeToLoadFrag(ttfbEstimateSec, adjustedbw, bitrate * avgDuration, levelDetails === void 0);
      const canSwitchWithinTolerance = adjustedbw >= bitrate && (i === lastLoadedFragLevel || levelInfo.loadError === 0 && levelInfo.fragmentError === 0) && (fetchDuration <= ttfbEstimateSec || !isFiniteNumber(fetchDuration) || live && !this.bitrateTestDelay || fetchDuration < maxFetchDuration);
      if (canSwitchWithinTolerance) {
        const forcedAutoLevel = this.forcedAutoLevel;
        if (i !== loadLevel && (forcedAutoLevel === -1 || forcedAutoLevel !== loadLevel)) {
          if (levelsSkipped.length) {
            this.trace(`Skipped level(s) ${levelsSkipped.join(",")} of ${maxAutoLevel} max with CODECS and VIDEO-RANGE:"${levels[levelsSkipped[0]].codecs}" ${levels[levelsSkipped[0]].videoRange}; not compatible with "${currentCodecSet}" ${currentVideoRange}`);
          }
          this.info(`switch candidate:${selectionBaseLevel}->${i} adjustedbw(${Math.round(adjustedbw)})-bitrate=${Math.round(adjustedbw - bitrate)} ttfb:${ttfbEstimateSec.toFixed(1)} avgDuration:${avgDuration.toFixed(1)} maxFetchDuration:${maxFetchDuration.toFixed(1)} fetchDuration:${fetchDuration.toFixed(1)} firstSelection:${firstSelection} codecSet:${levelInfo.codecSet} videoRange:${levelInfo.videoRange} hls.loadLevel:${loadLevel}`);
        }
        if (firstSelection) {
          this.firstSelection = i;
        }
        return i;
      }
    }
    return -1;
  }
  set nextAutoLevel(nextLevel) {
    const value = this.deriveNextAutoLevel(nextLevel);
    if (this._nextAutoLevel !== value) {
      this.nextAutoLevelKey = "";
      this._nextAutoLevel = value;
    }
  }
  deriveNextAutoLevel(nextLevel) {
    const {
      maxAutoLevel,
      minAutoLevel
    } = this.hls;
    return Math.min(Math.max(nextLevel, minAutoLevel), maxAutoLevel);
  }
};
var BinarySearch = {
  search: function(list, comparisonFn) {
    let minIndex = 0;
    let maxIndex = list.length - 1;
    let currentIndex = null;
    let currentElement = null;
    while (minIndex <= maxIndex) {
      currentIndex = (minIndex + maxIndex) / 2 | 0;
      currentElement = list[currentIndex];
      const comparisonResult = comparisonFn(currentElement);
      if (comparisonResult > 0) {
        minIndex = currentIndex + 1;
      } else if (comparisonResult < 0) {
        maxIndex = currentIndex - 1;
      } else {
        return currentElement;
      }
    }
    return null;
  }
};
function findFragmentByPDT(fragments, PDTValue, maxFragLookUpTolerance) {
  if (PDTValue === null || !Array.isArray(fragments) || !fragments.length || !isFiniteNumber(PDTValue)) {
    return null;
  }
  const startPDT = fragments[0].programDateTime;
  if (PDTValue < (startPDT || 0)) {
    return null;
  }
  const endPDT = fragments[fragments.length - 1].endProgramDateTime;
  if (PDTValue >= (endPDT || 0)) {
    return null;
  }
  for (let seg = 0; seg < fragments.length; ++seg) {
    const frag = fragments[seg];
    if (pdtWithinToleranceTest(PDTValue, maxFragLookUpTolerance, frag)) {
      return frag;
    }
  }
  return null;
}
function findFragmentByPTS(fragPrevious, fragments, bufferEnd = 0, maxFragLookUpTolerance = 0, nextFragLookupTolerance = 5e-3) {
  let fragNext = null;
  if (fragPrevious) {
    fragNext = fragments[1 + fragPrevious.sn - fragments[0].sn] || null;
    const bufferEdgeError = fragPrevious.endDTS - bufferEnd;
    if (bufferEdgeError > 0 && bufferEdgeError < 15e-7) {
      bufferEnd += 15e-7;
    }
    if (fragNext && fragPrevious.level !== fragNext.level && fragNext.end <= fragPrevious.end) {
      fragNext = fragments[2 + fragPrevious.sn - fragments[0].sn] || null;
    }
  } else if (bufferEnd === 0 && fragments[0].start === 0) {
    fragNext = fragments[0];
  }
  if (fragNext && ((!fragPrevious || fragPrevious.level === fragNext.level) && fragmentWithinToleranceTest(bufferEnd, maxFragLookUpTolerance, fragNext) === 0 || fragmentWithinFastStartSwitch(fragNext, fragPrevious, Math.min(nextFragLookupTolerance, maxFragLookUpTolerance)))) {
    return fragNext;
  }
  const foundFragment = BinarySearch.search(fragments, fragmentWithinToleranceTest.bind(null, bufferEnd, maxFragLookUpTolerance));
  if (foundFragment && (foundFragment !== fragPrevious || !fragNext)) {
    return foundFragment;
  }
  return fragNext;
}
function fragmentWithinFastStartSwitch(fragNext, fragPrevious, nextFragLookupTolerance) {
  if (fragPrevious && fragPrevious.start === 0 && fragPrevious.level < fragNext.level && (fragPrevious.endPTS || 0) > 0) {
    const firstDuration = fragPrevious.tagList.reduce((duration, tag) => {
      if (tag[0] === "INF") {
        duration += parseFloat(tag[1]);
      }
      return duration;
    }, nextFragLookupTolerance);
    return fragNext.start <= firstDuration;
  }
  return false;
}
function fragmentWithinToleranceTest(bufferEnd = 0, maxFragLookUpTolerance = 0, candidate) {
  if (candidate.start <= bufferEnd && candidate.start + candidate.duration > bufferEnd) {
    return 0;
  }
  const candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration + (candidate.deltaPTS ? candidate.deltaPTS : 0));
  if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
    return 1;
  } else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
    return -1;
  }
  return 0;
}
function pdtWithinToleranceTest(pdtBufferEnd, maxFragLookUpTolerance, candidate) {
  const candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration + (candidate.deltaPTS ? candidate.deltaPTS : 0)) * 1e3;
  const endProgramDateTime = candidate.endProgramDateTime || 0;
  return endProgramDateTime - candidateLookupTolerance > pdtBufferEnd;
}
function findNearestWithCC(details, cc, pos) {
  if (details) {
    if (details.startCC <= cc && details.endCC >= cc) {
      let fragments = details.fragments;
      const {
        fragmentHint
      } = details;
      if (fragmentHint) {
        fragments = fragments.concat(fragmentHint);
      }
      let closest;
      BinarySearch.search(fragments, (candidate) => {
        if (candidate.cc < cc) {
          return 1;
        }
        if (candidate.cc > cc) {
          return -1;
        }
        closest = candidate;
        if (candidate.end <= pos) {
          return 1;
        }
        if (candidate.start > pos) {
          return -1;
        }
        return 0;
      });
      return closest || null;
    }
  }
  return null;
}
function isTimeoutError(error) {
  switch (error.details) {
    case ErrorDetails.FRAG_LOAD_TIMEOUT:
    case ErrorDetails.KEY_LOAD_TIMEOUT:
    case ErrorDetails.LEVEL_LOAD_TIMEOUT:
    case ErrorDetails.MANIFEST_LOAD_TIMEOUT:
      return true;
  }
  return false;
}
function getRetryConfig(loadPolicy, error) {
  const isTimeout = isTimeoutError(error);
  return loadPolicy.default[`${isTimeout ? "timeout" : "error"}Retry`];
}
function getRetryDelay(retryConfig, retryCount) {
  const backoffFactor = retryConfig.backoff === "linear" ? 1 : Math.pow(2, retryCount);
  return Math.min(backoffFactor * retryConfig.retryDelayMs, retryConfig.maxRetryDelayMs);
}
function getLoaderConfigWithoutReties(loderConfig) {
  return _objectSpread2(_objectSpread2({}, loderConfig), {
    errorRetry: null,
    timeoutRetry: null
  });
}
function shouldRetry(retryConfig, retryCount, isTimeout, loaderResponse) {
  if (!retryConfig) {
    return false;
  }
  const httpStatus = loaderResponse == null ? void 0 : loaderResponse.code;
  const retry = retryCount < retryConfig.maxNumRetry && (retryForHttpStatus(httpStatus) || !!isTimeout);
  return retryConfig.shouldRetry ? retryConfig.shouldRetry(retryConfig, retryCount, isTimeout, loaderResponse, retry) : retry;
}
function retryForHttpStatus(httpStatus) {
  return httpStatus === 0 && navigator.onLine === false || !!httpStatus && (httpStatus < 400 || httpStatus > 499);
}
var NetworkErrorAction = {
  DoNothing: 0,
  SendEndCallback: 1,
  SendAlternateToPenaltyBox: 2,
  RemoveAlternatePermanently: 3,
  InsertDiscontinuity: 4,
  RetryRequest: 5
};
var ErrorActionFlags = {
  None: 0,
  MoveAllAlternatesMatchingHost: 1,
  MoveAllAlternatesMatchingHDCP: 2,
  SwitchToSDR: 4
};
var ErrorController = class extends Logger {
  constructor(hls) {
    super("error-controller", hls.logger);
    this.hls = void 0;
    this.playlistError = 0;
    this.penalizedRenditions = {};
    this.hls = hls;
    this.registerListeners();
  }
  registerListeners() {
    const hls = this.hls;
    hls.on(Events.ERROR, this.onError, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
  }
  unregisterListeners() {
    const hls = this.hls;
    if (!hls) {
      return;
    }
    hls.off(Events.ERROR, this.onError, this);
    hls.off(Events.ERROR, this.onErrorOut, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
  }
  destroy() {
    this.unregisterListeners();
    this.hls = null;
    this.penalizedRenditions = {};
  }
  startLoad(startPosition) {
  }
  stopLoad() {
    this.playlistError = 0;
  }
  getVariantLevelIndex(frag) {
    return (frag == null ? void 0 : frag.type) === PlaylistLevelType.MAIN ? frag.level : this.hls.loadLevel;
  }
  onManifestLoading() {
    this.playlistError = 0;
    this.penalizedRenditions = {};
  }
  onLevelUpdated() {
    this.playlistError = 0;
  }
  onError(event, data) {
    var _data$frag;
    if (data.fatal) {
      return;
    }
    const hls = this.hls;
    const context = data.context;
    switch (data.details) {
      case ErrorDetails.FRAG_LOAD_ERROR:
      case ErrorDetails.FRAG_LOAD_TIMEOUT:
      case ErrorDetails.KEY_LOAD_ERROR:
      case ErrorDetails.KEY_LOAD_TIMEOUT:
        data.errorAction = this.getFragRetryOrSwitchAction(data);
        return;
      case ErrorDetails.FRAG_PARSING_ERROR:
        if ((_data$frag = data.frag) != null && _data$frag.gap) {
          data.errorAction = createDoNothingErrorAction();
          return;
        }
      case ErrorDetails.FRAG_GAP:
      case ErrorDetails.FRAG_DECRYPT_ERROR: {
        data.errorAction = this.getFragRetryOrSwitchAction(data);
        data.errorAction.action = NetworkErrorAction.SendAlternateToPenaltyBox;
        return;
      }
      case ErrorDetails.LEVEL_EMPTY_ERROR:
      case ErrorDetails.LEVEL_PARSING_ERROR:
        {
          var _data$context, _data$context$levelDe;
          const levelIndex = data.parent === PlaylistLevelType.MAIN ? data.level : hls.loadLevel;
          if (data.details === ErrorDetails.LEVEL_EMPTY_ERROR && !!((_data$context = data.context) != null && (_data$context$levelDe = _data$context.levelDetails) != null && _data$context$levelDe.live)) {
            data.errorAction = this.getPlaylistRetryOrSwitchAction(data, levelIndex);
          } else {
            data.levelRetry = false;
            data.errorAction = this.getLevelSwitchAction(data, levelIndex);
          }
        }
        return;
      case ErrorDetails.LEVEL_LOAD_ERROR:
      case ErrorDetails.LEVEL_LOAD_TIMEOUT:
        if (typeof (context == null ? void 0 : context.level) === "number") {
          data.errorAction = this.getPlaylistRetryOrSwitchAction(data, context.level);
        }
        return;
      case ErrorDetails.AUDIO_TRACK_LOAD_ERROR:
      case ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT:
      case ErrorDetails.SUBTITLE_LOAD_ERROR:
      case ErrorDetails.SUBTITLE_TRACK_LOAD_TIMEOUT:
        if (context) {
          const level = hls.loadLevelObj;
          if (level && (context.type === PlaylistContextType.AUDIO_TRACK && level.hasAudioGroup(context.groupId) || context.type === PlaylistContextType.SUBTITLE_TRACK && level.hasSubtitleGroup(context.groupId))) {
            data.errorAction = this.getPlaylistRetryOrSwitchAction(data, hls.loadLevel);
            data.errorAction.action = NetworkErrorAction.SendAlternateToPenaltyBox;
            data.errorAction.flags = ErrorActionFlags.MoveAllAlternatesMatchingHost;
            return;
          }
        }
        return;
      case ErrorDetails.KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED:
        {
          const level = hls.loadLevelObj;
          const restrictedHdcpLevel = level == null ? void 0 : level.attrs["HDCP-LEVEL"];
          if (restrictedHdcpLevel) {
            data.errorAction = {
              action: NetworkErrorAction.SendAlternateToPenaltyBox,
              flags: ErrorActionFlags.MoveAllAlternatesMatchingHDCP,
              hdcpLevel: restrictedHdcpLevel
            };
          } else {
            this.keySystemError(data);
          }
        }
        return;
      case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
      case ErrorDetails.REMUX_ALLOC_ERROR:
      case ErrorDetails.BUFFER_APPEND_ERROR:
        if (!data.errorAction) {
          var _data$level;
          data.errorAction = this.getLevelSwitchAction(data, (_data$level = data.level) != null ? _data$level : hls.loadLevel);
        }
        return;
      case ErrorDetails.INTERNAL_EXCEPTION:
      case ErrorDetails.BUFFER_APPENDING_ERROR:
      case ErrorDetails.BUFFER_FULL_ERROR:
      case ErrorDetails.LEVEL_SWITCH_ERROR:
      case ErrorDetails.BUFFER_STALLED_ERROR:
      case ErrorDetails.BUFFER_SEEK_OVER_HOLE:
      case ErrorDetails.BUFFER_NUDGE_ON_STALL:
        data.errorAction = createDoNothingErrorAction();
        return;
    }
    if (data.type === ErrorTypes.KEY_SYSTEM_ERROR) {
      this.keySystemError(data);
    }
  }
  keySystemError(data) {
    const levelIndex = this.getVariantLevelIndex(data.frag);
    data.levelRetry = false;
    data.errorAction = this.getLevelSwitchAction(data, levelIndex);
  }
  getPlaylistRetryOrSwitchAction(data, levelIndex) {
    const hls = this.hls;
    const retryConfig = getRetryConfig(hls.config.playlistLoadPolicy, data);
    const retryCount = this.playlistError++;
    const retry = shouldRetry(retryConfig, retryCount, isTimeoutError(data), data.response);
    if (retry) {
      return {
        action: NetworkErrorAction.RetryRequest,
        flags: ErrorActionFlags.None,
        retryConfig,
        retryCount
      };
    }
    const errorAction = this.getLevelSwitchAction(data, levelIndex);
    if (retryConfig) {
      errorAction.retryConfig = retryConfig;
      errorAction.retryCount = retryCount;
    }
    return errorAction;
  }
  getFragRetryOrSwitchAction(data) {
    const hls = this.hls;
    const variantLevelIndex = this.getVariantLevelIndex(data.frag);
    const level = hls.levels[variantLevelIndex];
    const {
      fragLoadPolicy,
      keyLoadPolicy
    } = hls.config;
    const retryConfig = getRetryConfig(data.details.startsWith("key") ? keyLoadPolicy : fragLoadPolicy, data);
    const fragmentErrors = hls.levels.reduce((acc, level2) => acc + level2.fragmentError, 0);
    if (level) {
      if (data.details !== ErrorDetails.FRAG_GAP) {
        level.fragmentError++;
      }
      const retry = shouldRetry(retryConfig, fragmentErrors, isTimeoutError(data), data.response);
      if (retry) {
        return {
          action: NetworkErrorAction.RetryRequest,
          flags: ErrorActionFlags.None,
          retryConfig,
          retryCount: fragmentErrors
        };
      }
    }
    const errorAction = this.getLevelSwitchAction(data, variantLevelIndex);
    if (retryConfig) {
      errorAction.retryConfig = retryConfig;
      errorAction.retryCount = fragmentErrors;
    }
    return errorAction;
  }
  getLevelSwitchAction(data, levelIndex) {
    const hls = this.hls;
    if (levelIndex === null || levelIndex === void 0) {
      levelIndex = hls.loadLevel;
    }
    const level = this.hls.levels[levelIndex];
    if (level) {
      var _data$frag2, _data$context2;
      const errorDetails = data.details;
      level.loadError++;
      if (errorDetails === ErrorDetails.BUFFER_APPEND_ERROR) {
        level.fragmentError++;
      }
      let nextLevel = -1;
      const {
        levels,
        loadLevel,
        minAutoLevel,
        maxAutoLevel
      } = hls;
      if (!hls.autoLevelEnabled && !hls.config.preserveManualLevelOnError) {
        hls.loadLevel = -1;
      }
      const fragErrorType = (_data$frag2 = data.frag) == null ? void 0 : _data$frag2.type;
      const isAudioCodecError = fragErrorType === PlaylistLevelType.AUDIO && errorDetails === ErrorDetails.FRAG_PARSING_ERROR || data.sourceBufferName === "audio" && (errorDetails === ErrorDetails.BUFFER_ADD_CODEC_ERROR || errorDetails === ErrorDetails.BUFFER_APPEND_ERROR);
      const findAudioCodecAlternate = isAudioCodecError && levels.some(({
        audioCodec
      }) => level.audioCodec !== audioCodec);
      const isVideoCodecError = data.sourceBufferName === "video" && (errorDetails === ErrorDetails.BUFFER_ADD_CODEC_ERROR || errorDetails === ErrorDetails.BUFFER_APPEND_ERROR);
      const findVideoCodecAlternate = isVideoCodecError && levels.some(({
        codecSet,
        audioCodec
      }) => level.codecSet !== codecSet && level.audioCodec === audioCodec);
      const {
        type: playlistErrorType,
        groupId: playlistErrorGroupId
      } = (_data$context2 = data.context) != null ? _data$context2 : {};
      for (let i = levels.length; i--; ) {
        const candidate = (i + loadLevel) % levels.length;
        if (candidate !== loadLevel && candidate >= minAutoLevel && candidate <= maxAutoLevel && levels[candidate].loadError === 0) {
          var _level$audioGroups, _level$subtitleGroups;
          const levelCandidate = levels[candidate];
          if (errorDetails === ErrorDetails.FRAG_GAP && fragErrorType === PlaylistLevelType.MAIN && data.frag) {
            const levelDetails = levels[candidate].details;
            if (levelDetails) {
              const fragCandidate = findFragmentByPTS(data.frag, levelDetails.fragments, data.frag.start);
              if (fragCandidate != null && fragCandidate.gap) {
                continue;
              }
            }
          } else if (playlistErrorType === PlaylistContextType.AUDIO_TRACK && levelCandidate.hasAudioGroup(playlistErrorGroupId) || playlistErrorType === PlaylistContextType.SUBTITLE_TRACK && levelCandidate.hasSubtitleGroup(playlistErrorGroupId)) {
            continue;
          } else if (fragErrorType === PlaylistLevelType.AUDIO && (_level$audioGroups = level.audioGroups) != null && _level$audioGroups.some((groupId) => levelCandidate.hasAudioGroup(groupId)) || fragErrorType === PlaylistLevelType.SUBTITLE && (_level$subtitleGroups = level.subtitleGroups) != null && _level$subtitleGroups.some((groupId) => levelCandidate.hasSubtitleGroup(groupId)) || findAudioCodecAlternate && level.audioCodec === levelCandidate.audioCodec || !findAudioCodecAlternate && level.audioCodec !== levelCandidate.audioCodec || findVideoCodecAlternate && level.codecSet === levelCandidate.codecSet) {
            continue;
          }
          nextLevel = candidate;
          break;
        }
      }
      if (nextLevel > -1 && hls.loadLevel !== nextLevel) {
        data.levelRetry = true;
        this.playlistError = 0;
        return {
          action: NetworkErrorAction.SendAlternateToPenaltyBox,
          flags: ErrorActionFlags.None,
          nextAutoLevel: nextLevel
        };
      }
    }
    return {
      action: NetworkErrorAction.SendAlternateToPenaltyBox,
      flags: ErrorActionFlags.MoveAllAlternatesMatchingHost
    };
  }
  onErrorOut(event, data) {
    var _data$errorAction;
    switch ((_data$errorAction = data.errorAction) == null ? void 0 : _data$errorAction.action) {
      case NetworkErrorAction.DoNothing:
        break;
      case NetworkErrorAction.SendAlternateToPenaltyBox:
        this.sendAlternateToPenaltyBox(data);
        if (!data.errorAction.resolved && data.details !== ErrorDetails.FRAG_GAP) {
          data.fatal = true;
        } else if (/MediaSource readyState: ended/.test(data.error.message)) {
          this.warn(`MediaSource ended after "${data.sourceBufferName}" sourceBuffer append error. Attempting to recover from media error.`);
          this.hls.recoverMediaError();
        }
        break;
      case NetworkErrorAction.RetryRequest:
        break;
    }
    if (data.fatal) {
      this.hls.stopLoad();
      return;
    }
  }
  sendAlternateToPenaltyBox(data) {
    const hls = this.hls;
    const errorAction = data.errorAction;
    if (!errorAction) {
      return;
    }
    const {
      flags,
      hdcpLevel,
      nextAutoLevel
    } = errorAction;
    switch (flags) {
      case ErrorActionFlags.None:
        this.switchLevel(data, nextAutoLevel);
        break;
      case ErrorActionFlags.MoveAllAlternatesMatchingHDCP:
        if (hdcpLevel) {
          hls.maxHdcpLevel = HdcpLevels[HdcpLevels.indexOf(hdcpLevel) - 1];
          errorAction.resolved = true;
        }
        this.warn(`Restricting playback to HDCP-LEVEL of "${hls.maxHdcpLevel}" or lower`);
        break;
    }
    if (!errorAction.resolved) {
      this.switchLevel(data, nextAutoLevel);
    }
  }
  switchLevel(data, levelIndex) {
    if (levelIndex !== void 0 && data.errorAction) {
      this.warn(`switching to level ${levelIndex} after ${data.details}`);
      this.hls.nextAutoLevel = levelIndex;
      data.errorAction.resolved = true;
      this.hls.nextLoadLevel = this.hls.nextAutoLevel;
      if (data.details === ErrorDetails.BUFFER_ADD_CODEC_ERROR && data.mimeType && data.sourceBufferName !== "audiovideo") {
        const codec = getCodecsForMimeType(data.mimeType);
        const levels = this.hls.levels;
        for (let i = levels.length; i--; ) {
          if (levels[i][`${data.sourceBufferName}Codec`] === codec) {
            this.hls.removeLevel(i);
          }
        }
      }
    }
  }
};
function createDoNothingErrorAction(resolved) {
  const errorAction = {
    action: NetworkErrorAction.DoNothing,
    flags: ErrorActionFlags.None
  };
  if (resolved) {
    errorAction.resolved = true;
  }
  return errorAction;
}
var FragmentState = {
  NOT_LOADED: "NOT_LOADED",
  APPENDING: "APPENDING",
  PARTIAL: "PARTIAL",
  OK: "OK"
};
var FragmentTracker = class {
  constructor(hls) {
    this.activePartLists = /* @__PURE__ */ Object.create(null);
    this.endListFragments = /* @__PURE__ */ Object.create(null);
    this.fragments = /* @__PURE__ */ Object.create(null);
    this.timeRanges = /* @__PURE__ */ Object.create(null);
    this.bufferPadding = 0.2;
    this.hls = void 0;
    this.hasGaps = false;
    this.hls = hls;
    this._registerListeners();
  }
  _registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
  }
  _unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
  }
  destroy() {
    this._unregisterListeners();
    this.fragments = this.activePartLists = this.endListFragments = this.timeRanges = null;
  }
  getAppendedFrag(position, levelType) {
    const activeParts = this.activePartLists[levelType];
    if (activeParts) {
      for (let i = activeParts.length; i--; ) {
        const activePart = activeParts[i];
        if (!activePart) {
          break;
        }
        const appendedPTS = activePart.end;
        if (activePart.start <= position && appendedPTS !== null && position <= appendedPTS) {
          return activePart;
        }
      }
    }
    return this.getBufferedFrag(position, levelType);
  }
  getBufferedFrag(position, levelType) {
    return this.getFragAtPos(position, levelType, true);
  }
  getFragAtPos(position, levelType, buffered) {
    const {
      fragments
    } = this;
    const keys = Object.keys(fragments);
    for (let i = keys.length; i--; ) {
      const fragmentEntity = fragments[keys[i]];
      if ((fragmentEntity == null ? void 0 : fragmentEntity.body.type) === levelType && (!buffered || fragmentEntity.buffered)) {
        const frag = fragmentEntity.body;
        if (frag.start <= position && position <= frag.end) {
          return frag;
        }
      }
    }
    return null;
  }
  detectEvictedFragments(elementaryStream, timeRange, playlistType, appendedPart, removeAppending) {
    if (this.timeRanges) {
      this.timeRanges[elementaryStream] = timeRange;
    }
    const appendedPartSn = (appendedPart == null ? void 0 : appendedPart.fragment.sn) || -1;
    Object.keys(this.fragments).forEach((key) => {
      const fragmentEntity = this.fragments[key];
      if (!fragmentEntity) {
        return;
      }
      if (appendedPartSn >= fragmentEntity.body.sn) {
        return;
      }
      if (!fragmentEntity.buffered && (!fragmentEntity.loaded || removeAppending)) {
        if (fragmentEntity.body.type === playlistType) {
          this.removeFragment(fragmentEntity.body);
        }
        return;
      }
      const esData = fragmentEntity.range[elementaryStream];
      if (!esData) {
        return;
      }
      if (esData.time.length === 0) {
        this.removeFragment(fragmentEntity.body);
        return;
      }
      esData.time.some((time) => {
        const isNotBuffered = !this.isTimeBuffered(time.startPTS, time.endPTS, timeRange);
        if (isNotBuffered) {
          this.removeFragment(fragmentEntity.body);
        }
        return isNotBuffered;
      });
    });
  }
  detectPartialFragments(data) {
    const timeRanges = this.timeRanges;
    if (!timeRanges || data.frag.sn === "initSegment") {
      return;
    }
    const frag = data.frag;
    const fragKey = getFragmentKey(frag);
    const fragmentEntity = this.fragments[fragKey];
    if (!fragmentEntity || fragmentEntity.buffered && frag.gap) {
      return;
    }
    const isFragHint = !frag.relurl;
    Object.keys(timeRanges).forEach((elementaryStream) => {
      const streamInfo = frag.elementaryStreams[elementaryStream];
      if (!streamInfo) {
        return;
      }
      const timeRange = timeRanges[elementaryStream];
      const partial = isFragHint || streamInfo.partial === true;
      fragmentEntity.range[elementaryStream] = this.getBufferedTimes(frag, data.part, partial, timeRange);
    });
    fragmentEntity.loaded = null;
    if (Object.keys(fragmentEntity.range).length) {
      fragmentEntity.buffered = true;
      const endList = fragmentEntity.body.endList = frag.endList || fragmentEntity.body.endList;
      if (endList) {
        this.endListFragments[fragmentEntity.body.type] = fragmentEntity;
      }
      if (!isPartial(fragmentEntity)) {
        this.removeParts(frag.sn - 1, frag.type);
      }
    } else {
      this.removeFragment(fragmentEntity.body);
    }
  }
  removeParts(snToKeep, levelType) {
    const activeParts = this.activePartLists[levelType];
    if (!activeParts) {
      return;
    }
    this.activePartLists[levelType] = filterParts(activeParts, (part) => part.fragment.sn >= snToKeep);
  }
  fragBuffered(frag, force) {
    const fragKey = getFragmentKey(frag);
    let fragmentEntity = this.fragments[fragKey];
    if (!fragmentEntity && force) {
      fragmentEntity = this.fragments[fragKey] = {
        body: frag,
        appendedPTS: null,
        loaded: null,
        buffered: false,
        range: /* @__PURE__ */ Object.create(null)
      };
      if (frag.gap) {
        this.hasGaps = true;
      }
    }
    if (fragmentEntity) {
      fragmentEntity.loaded = null;
      fragmentEntity.buffered = true;
    }
  }
  getBufferedTimes(fragment, part, partial, timeRange) {
    const buffered = {
      time: [],
      partial
    };
    const startPTS = fragment.start;
    const endPTS = fragment.end;
    const minEndPTS = fragment.minEndPTS || endPTS;
    const maxStartPTS = fragment.maxStartPTS || startPTS;
    for (let i = 0; i < timeRange.length; i++) {
      const startTime = timeRange.start(i) - this.bufferPadding;
      const endTime = timeRange.end(i) + this.bufferPadding;
      if (maxStartPTS >= startTime && minEndPTS <= endTime) {
        buffered.time.push({
          startPTS: Math.max(startPTS, timeRange.start(i)),
          endPTS: Math.min(endPTS, timeRange.end(i))
        });
        break;
      } else if (startPTS < endTime && endPTS > startTime) {
        const start = Math.max(startPTS, timeRange.start(i));
        const end = Math.min(endPTS, timeRange.end(i));
        if (end > start) {
          buffered.partial = true;
          buffered.time.push({
            startPTS: start,
            endPTS: end
          });
        }
      } else if (endPTS <= startTime) {
        break;
      }
    }
    return buffered;
  }
  getPartialFragment(time) {
    let bestFragment = null;
    let timePadding;
    let startTime;
    let endTime;
    let bestOverlap = 0;
    const {
      bufferPadding,
      fragments
    } = this;
    Object.keys(fragments).forEach((key) => {
      const fragmentEntity = fragments[key];
      if (!fragmentEntity) {
        return;
      }
      if (isPartial(fragmentEntity)) {
        startTime = fragmentEntity.body.start - bufferPadding;
        endTime = fragmentEntity.body.end + bufferPadding;
        if (time >= startTime && time <= endTime) {
          timePadding = Math.min(time - startTime, endTime - time);
          if (bestOverlap <= timePadding) {
            bestFragment = fragmentEntity.body;
            bestOverlap = timePadding;
          }
        }
      }
    });
    return bestFragment;
  }
  isEndListAppended(type) {
    const lastFragmentEntity = this.endListFragments[type];
    return lastFragmentEntity !== void 0 && (lastFragmentEntity.buffered || isPartial(lastFragmentEntity));
  }
  getState(fragment) {
    const fragKey = getFragmentKey(fragment);
    const fragmentEntity = this.fragments[fragKey];
    if (fragmentEntity) {
      if (!fragmentEntity.buffered) {
        return FragmentState.APPENDING;
      } else if (isPartial(fragmentEntity)) {
        return FragmentState.PARTIAL;
      } else {
        return FragmentState.OK;
      }
    }
    return FragmentState.NOT_LOADED;
  }
  isTimeBuffered(startPTS, endPTS, timeRange) {
    let startTime;
    let endTime;
    for (let i = 0; i < timeRange.length; i++) {
      startTime = timeRange.start(i) - this.bufferPadding;
      endTime = timeRange.end(i) + this.bufferPadding;
      if (startPTS >= startTime && endPTS <= endTime) {
        return true;
      }
      if (endPTS <= startTime) {
        return false;
      }
    }
    return false;
  }
  onManifestLoading() {
    this.removeAllFragments();
  }
  onFragLoaded(event, data) {
    if (data.frag.sn === "initSegment" || data.frag.bitrateTest) {
      return;
    }
    const frag = data.frag;
    const loaded = data.part ? null : data;
    const fragKey = getFragmentKey(frag);
    this.fragments[fragKey] = {
      body: frag,
      appendedPTS: null,
      loaded,
      buffered: false,
      range: /* @__PURE__ */ Object.create(null)
    };
  }
  onBufferAppended(event, data) {
    const {
      frag,
      part,
      timeRanges,
      type
    } = data;
    if (frag.sn === "initSegment") {
      return;
    }
    const playlistType = frag.type;
    if (part) {
      let activeParts = this.activePartLists[playlistType];
      if (!activeParts) {
        this.activePartLists[playlistType] = activeParts = [];
      }
      activeParts.push(part);
    }
    this.timeRanges = timeRanges;
    const timeRange = timeRanges[type];
    this.detectEvictedFragments(type, timeRange, playlistType, part);
  }
  onFragBuffered(event, data) {
    this.detectPartialFragments(data);
  }
  hasFragment(fragment) {
    const fragKey = getFragmentKey(fragment);
    return !!this.fragments[fragKey];
  }
  hasFragments(type) {
    const {
      fragments
    } = this;
    const keys = Object.keys(fragments);
    if (!type) {
      return keys.length > 0;
    }
    for (let i = keys.length; i--; ) {
      const fragmentEntity = fragments[keys[i]];
      if ((fragmentEntity == null ? void 0 : fragmentEntity.body.type) === type) {
        return true;
      }
    }
    return false;
  }
  hasParts(type) {
    var _this$activePartLists;
    return !!((_this$activePartLists = this.activePartLists[type]) != null && _this$activePartLists.length);
  }
  removeFragmentsInRange(start, end, playlistType, withGapOnly, unbufferedOnly) {
    if (withGapOnly && !this.hasGaps) {
      return;
    }
    Object.keys(this.fragments).forEach((key) => {
      const fragmentEntity = this.fragments[key];
      if (!fragmentEntity) {
        return;
      }
      const frag = fragmentEntity.body;
      if (frag.type !== playlistType || withGapOnly && !frag.gap) {
        return;
      }
      if (frag.start < end && frag.end > start && (fragmentEntity.buffered || unbufferedOnly)) {
        this.removeFragment(frag);
      }
    });
  }
  removeFragment(fragment) {
    const fragKey = getFragmentKey(fragment);
    fragment.clearElementaryStreamInfo();
    const activeParts = this.activePartLists[fragment.type];
    if (activeParts) {
      const snToRemove = fragment.sn;
      this.activePartLists[fragment.type] = filterParts(activeParts, (part) => part.fragment.sn !== snToRemove);
    }
    delete this.fragments[fragKey];
    if (fragment.endList) {
      delete this.endListFragments[fragment.type];
    }
  }
  removeAllFragments() {
    var _this$hls, _this$hls$latestLevel;
    this.fragments = /* @__PURE__ */ Object.create(null);
    this.endListFragments = /* @__PURE__ */ Object.create(null);
    this.activePartLists = /* @__PURE__ */ Object.create(null);
    this.hasGaps = false;
    const partlist = (_this$hls = this.hls) == null ? void 0 : (_this$hls$latestLevel = _this$hls.latestLevelDetails) == null ? void 0 : _this$hls$latestLevel.partList;
    if (partlist) {
      partlist.forEach((part) => part.clearElementaryStreamInfo());
    }
  }
};
function isPartial(fragmentEntity) {
  var _fragmentEntity$range, _fragmentEntity$range2, _fragmentEntity$range3;
  return fragmentEntity.buffered && (fragmentEntity.body.gap || ((_fragmentEntity$range = fragmentEntity.range.video) == null ? void 0 : _fragmentEntity$range.partial) || ((_fragmentEntity$range2 = fragmentEntity.range.audio) == null ? void 0 : _fragmentEntity$range2.partial) || ((_fragmentEntity$range3 = fragmentEntity.range.audiovideo) == null ? void 0 : _fragmentEntity$range3.partial));
}
function getFragmentKey(fragment) {
  return `${fragment.type}_${fragment.level}_${fragment.sn}`;
}
function filterParts(partList, predicate) {
  return partList.filter((part) => {
    const keep = predicate(part);
    if (!keep) {
      part.clearElementaryStreamInfo();
    }
    return keep;
  });
}
var DecrypterAesMode = {
  cbc: 0,
  ctr: 1
};
var AESCrypto = class {
  constructor(subtle, iv, aesMode) {
    this.subtle = void 0;
    this.aesIV = void 0;
    this.aesMode = void 0;
    this.subtle = subtle;
    this.aesIV = iv;
    this.aesMode = aesMode;
  }
  decrypt(data, key) {
    switch (this.aesMode) {
      case DecrypterAesMode.cbc:
        return this.subtle.decrypt({
          name: "AES-CBC",
          iv: this.aesIV
        }, key, data);
      case DecrypterAesMode.ctr:
        return this.subtle.decrypt({
          name: "AES-CTR",
          counter: this.aesIV,
          length: 64
        }, key, data);
      default:
        throw new Error(`[AESCrypto] invalid aes mode ${this.aesMode}`);
    }
  }
};
function removePadding(array) {
  const outputBytes = array.byteLength;
  const paddingBytes = outputBytes && new DataView(array.buffer).getUint8(outputBytes - 1);
  if (paddingBytes) {
    return array.slice(0, outputBytes - paddingBytes);
  }
  return array;
}
var AESDecryptor = class {
  constructor() {
    this.rcon = [0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54];
    this.subMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
    this.invSubMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
    this.sBox = new Uint32Array(256);
    this.invSBox = new Uint32Array(256);
    this.key = new Uint32Array(0);
    this.ksRows = 0;
    this.keySize = 0;
    this.keySchedule = void 0;
    this.invKeySchedule = void 0;
    this.initTable();
  }
  uint8ArrayToUint32Array_(arrayBuffer) {
    const view2 = new DataView(arrayBuffer);
    const newArray = new Uint32Array(4);
    for (let i = 0; i < 4; i++) {
      newArray[i] = view2.getUint32(i * 4);
    }
    return newArray;
  }
  initTable() {
    const sBox = this.sBox;
    const invSBox = this.invSBox;
    const subMix = this.subMix;
    const subMix0 = subMix[0];
    const subMix1 = subMix[1];
    const subMix2 = subMix[2];
    const subMix3 = subMix[3];
    const invSubMix = this.invSubMix;
    const invSubMix0 = invSubMix[0];
    const invSubMix1 = invSubMix[1];
    const invSubMix2 = invSubMix[2];
    const invSubMix3 = invSubMix[3];
    const d = new Uint32Array(256);
    let x = 0;
    let xi = 0;
    let i = 0;
    for (i = 0; i < 256; i++) {
      if (i < 128) {
        d[i] = i << 1;
      } else {
        d[i] = i << 1 ^ 283;
      }
    }
    for (i = 0; i < 256; i++) {
      let sx = xi ^ xi << 1 ^ xi << 2 ^ xi << 3 ^ xi << 4;
      sx = sx >>> 8 ^ sx & 255 ^ 99;
      sBox[x] = sx;
      invSBox[sx] = x;
      const x2 = d[x];
      const x4 = d[x2];
      const x8 = d[x4];
      let t = d[sx] * 257 ^ sx * 16843008;
      subMix0[x] = t << 24 | t >>> 8;
      subMix1[x] = t << 16 | t >>> 16;
      subMix2[x] = t << 8 | t >>> 24;
      subMix3[x] = t;
      t = x8 * 16843009 ^ x4 * 65537 ^ x2 * 257 ^ x * 16843008;
      invSubMix0[sx] = t << 24 | t >>> 8;
      invSubMix1[sx] = t << 16 | t >>> 16;
      invSubMix2[sx] = t << 8 | t >>> 24;
      invSubMix3[sx] = t;
      if (!x) {
        x = xi = 1;
      } else {
        x = x2 ^ d[d[d[x8 ^ x2]]];
        xi ^= d[d[xi]];
      }
    }
  }
  expandKey(keyBuffer) {
    const key = this.uint8ArrayToUint32Array_(keyBuffer);
    let sameKey = true;
    let offset = 0;
    while (offset < key.length && sameKey) {
      sameKey = key[offset] === this.key[offset];
      offset++;
    }
    if (sameKey) {
      return;
    }
    this.key = key;
    const keySize = this.keySize = key.length;
    if (keySize !== 4 && keySize !== 6 && keySize !== 8) {
      throw new Error("Invalid aes key size=" + keySize);
    }
    const ksRows = this.ksRows = (keySize + 6 + 1) * 4;
    let ksRow;
    let invKsRow;
    const keySchedule = this.keySchedule = new Uint32Array(ksRows);
    const invKeySchedule = this.invKeySchedule = new Uint32Array(ksRows);
    const sbox = this.sBox;
    const rcon = this.rcon;
    const invSubMix = this.invSubMix;
    const invSubMix0 = invSubMix[0];
    const invSubMix1 = invSubMix[1];
    const invSubMix2 = invSubMix[2];
    const invSubMix3 = invSubMix[3];
    let prev;
    let t;
    for (ksRow = 0; ksRow < ksRows; ksRow++) {
      if (ksRow < keySize) {
        prev = keySchedule[ksRow] = key[ksRow];
        continue;
      }
      t = prev;
      if (ksRow % keySize === 0) {
        t = t << 8 | t >>> 24;
        t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 255] << 16 | sbox[t >>> 8 & 255] << 8 | sbox[t & 255];
        t ^= rcon[ksRow / keySize | 0] << 24;
      } else if (keySize > 6 && ksRow % keySize === 4) {
        t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 255] << 16 | sbox[t >>> 8 & 255] << 8 | sbox[t & 255];
      }
      keySchedule[ksRow] = prev = (keySchedule[ksRow - keySize] ^ t) >>> 0;
    }
    for (invKsRow = 0; invKsRow < ksRows; invKsRow++) {
      ksRow = ksRows - invKsRow;
      if (invKsRow & 3) {
        t = keySchedule[ksRow];
      } else {
        t = keySchedule[ksRow - 4];
      }
      if (invKsRow < 4 || ksRow <= 4) {
        invKeySchedule[invKsRow] = t;
      } else {
        invKeySchedule[invKsRow] = invSubMix0[sbox[t >>> 24]] ^ invSubMix1[sbox[t >>> 16 & 255]] ^ invSubMix2[sbox[t >>> 8 & 255]] ^ invSubMix3[sbox[t & 255]];
      }
      invKeySchedule[invKsRow] = invKeySchedule[invKsRow] >>> 0;
    }
  }
  networkToHostOrderSwap(word) {
    return word << 24 | (word & 65280) << 8 | (word & 16711680) >> 8 | word >>> 24;
  }
  decrypt(inputArrayBuffer, offset, aesIV) {
    const nRounds = this.keySize + 6;
    const invKeySchedule = this.invKeySchedule;
    const invSBOX = this.invSBox;
    const invSubMix = this.invSubMix;
    const invSubMix0 = invSubMix[0];
    const invSubMix1 = invSubMix[1];
    const invSubMix2 = invSubMix[2];
    const invSubMix3 = invSubMix[3];
    const initVector = this.uint8ArrayToUint32Array_(aesIV);
    let initVector0 = initVector[0];
    let initVector1 = initVector[1];
    let initVector2 = initVector[2];
    let initVector3 = initVector[3];
    const inputInt32 = new Int32Array(inputArrayBuffer);
    const outputInt32 = new Int32Array(inputInt32.length);
    let t0, t1, t2, t3;
    let s0, s1, s2, s3;
    let inputWords0, inputWords1, inputWords2, inputWords3;
    let ksRow, i;
    const swapWord = this.networkToHostOrderSwap;
    while (offset < inputInt32.length) {
      inputWords0 = swapWord(inputInt32[offset]);
      inputWords1 = swapWord(inputInt32[offset + 1]);
      inputWords2 = swapWord(inputInt32[offset + 2]);
      inputWords3 = swapWord(inputInt32[offset + 3]);
      s0 = inputWords0 ^ invKeySchedule[0];
      s1 = inputWords3 ^ invKeySchedule[1];
      s2 = inputWords2 ^ invKeySchedule[2];
      s3 = inputWords1 ^ invKeySchedule[3];
      ksRow = 4;
      for (i = 1; i < nRounds; i++) {
        t0 = invSubMix0[s0 >>> 24] ^ invSubMix1[s1 >> 16 & 255] ^ invSubMix2[s2 >> 8 & 255] ^ invSubMix3[s3 & 255] ^ invKeySchedule[ksRow];
        t1 = invSubMix0[s1 >>> 24] ^ invSubMix1[s2 >> 16 & 255] ^ invSubMix2[s3 >> 8 & 255] ^ invSubMix3[s0 & 255] ^ invKeySchedule[ksRow + 1];
        t2 = invSubMix0[s2 >>> 24] ^ invSubMix1[s3 >> 16 & 255] ^ invSubMix2[s0 >> 8 & 255] ^ invSubMix3[s1 & 255] ^ invKeySchedule[ksRow + 2];
        t3 = invSubMix0[s3 >>> 24] ^ invSubMix1[s0 >> 16 & 255] ^ invSubMix2[s1 >> 8 & 255] ^ invSubMix3[s2 & 255] ^ invKeySchedule[ksRow + 3];
        s0 = t0;
        s1 = t1;
        s2 = t2;
        s3 = t3;
        ksRow = ksRow + 4;
      }
      t0 = invSBOX[s0 >>> 24] << 24 ^ invSBOX[s1 >> 16 & 255] << 16 ^ invSBOX[s2 >> 8 & 255] << 8 ^ invSBOX[s3 & 255] ^ invKeySchedule[ksRow];
      t1 = invSBOX[s1 >>> 24] << 24 ^ invSBOX[s2 >> 16 & 255] << 16 ^ invSBOX[s3 >> 8 & 255] << 8 ^ invSBOX[s0 & 255] ^ invKeySchedule[ksRow + 1];
      t2 = invSBOX[s2 >>> 24] << 24 ^ invSBOX[s3 >> 16 & 255] << 16 ^ invSBOX[s0 >> 8 & 255] << 8 ^ invSBOX[s1 & 255] ^ invKeySchedule[ksRow + 2];
      t3 = invSBOX[s3 >>> 24] << 24 ^ invSBOX[s0 >> 16 & 255] << 16 ^ invSBOX[s1 >> 8 & 255] << 8 ^ invSBOX[s2 & 255] ^ invKeySchedule[ksRow + 3];
      outputInt32[offset] = swapWord(t0 ^ initVector0);
      outputInt32[offset + 1] = swapWord(t3 ^ initVector1);
      outputInt32[offset + 2] = swapWord(t2 ^ initVector2);
      outputInt32[offset + 3] = swapWord(t1 ^ initVector3);
      initVector0 = inputWords0;
      initVector1 = inputWords1;
      initVector2 = inputWords2;
      initVector3 = inputWords3;
      offset = offset + 4;
    }
    return outputInt32.buffer;
  }
};
var FastAESKey = class {
  constructor(subtle, key, aesMode) {
    this.subtle = void 0;
    this.key = void 0;
    this.aesMode = void 0;
    this.subtle = subtle;
    this.key = key;
    this.aesMode = aesMode;
  }
  expandKey() {
    const subtleAlgoName = getSubtleAlgoName(this.aesMode);
    return this.subtle.importKey("raw", this.key, {
      name: subtleAlgoName
    }, false, ["encrypt", "decrypt"]);
  }
};
function getSubtleAlgoName(aesMode) {
  switch (aesMode) {
    case DecrypterAesMode.cbc:
      return "AES-CBC";
    case DecrypterAesMode.ctr:
      return "AES-CTR";
    default:
      throw new Error(`[FastAESKey] invalid aes mode ${aesMode}`);
  }
}
var CHUNK_SIZE = 16;
var Decrypter = class {
  constructor(config, {
    removePKCS7Padding = true
  } = {}) {
    this.logEnabled = true;
    this.removePKCS7Padding = void 0;
    this.subtle = null;
    this.softwareDecrypter = null;
    this.key = null;
    this.fastAesKey = null;
    this.remainderData = null;
    this.currentIV = null;
    this.currentResult = null;
    this.useSoftware = void 0;
    this.enableSoftwareAES = void 0;
    this.enableSoftwareAES = config.enableSoftwareAES;
    this.removePKCS7Padding = removePKCS7Padding;
    if (removePKCS7Padding) {
      try {
        const browserCrypto = self.crypto;
        if (browserCrypto) {
          this.subtle = browserCrypto.subtle || browserCrypto.webkitSubtle;
        }
      } catch (e) {
      }
    }
    this.useSoftware = !this.subtle;
  }
  destroy() {
    this.subtle = null;
    this.softwareDecrypter = null;
    this.key = null;
    this.fastAesKey = null;
    this.remainderData = null;
    this.currentIV = null;
    this.currentResult = null;
  }
  isSync() {
    return this.useSoftware;
  }
  flush() {
    const {
      currentResult,
      remainderData
    } = this;
    if (!currentResult || remainderData) {
      this.reset();
      return null;
    }
    const data = new Uint8Array(currentResult);
    this.reset();
    if (this.removePKCS7Padding) {
      return removePadding(data);
    }
    return data;
  }
  reset() {
    this.currentResult = null;
    this.currentIV = null;
    this.remainderData = null;
    if (this.softwareDecrypter) {
      this.softwareDecrypter = null;
    }
  }
  decrypt(data, key, iv, aesMode) {
    if (this.useSoftware) {
      return new Promise((resolve, reject) => {
        const dataView = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
        this.softwareDecrypt(dataView, key, iv, aesMode);
        const decryptResult = this.flush();
        if (decryptResult) {
          resolve(decryptResult.buffer);
        } else {
          reject(new Error("[softwareDecrypt] Failed to decrypt data"));
        }
      });
    }
    return this.webCryptoDecrypt(new Uint8Array(data), key, iv, aesMode);
  }
  softwareDecrypt(data, key, iv, aesMode) {
    const {
      currentIV,
      currentResult,
      remainderData
    } = this;
    if (aesMode !== DecrypterAesMode.cbc || key.byteLength !== 16) {
      logger.warn("SoftwareDecrypt: can only handle AES-128-CBC");
      return null;
    }
    this.logOnce("JS AES decrypt");
    if (remainderData) {
      data = appendUint8Array(remainderData, data);
      this.remainderData = null;
    }
    const currentChunk = this.getValidChunk(data);
    if (!currentChunk.length) {
      return null;
    }
    if (currentIV) {
      iv = currentIV;
    }
    let softwareDecrypter = this.softwareDecrypter;
    if (!softwareDecrypter) {
      softwareDecrypter = this.softwareDecrypter = new AESDecryptor();
    }
    softwareDecrypter.expandKey(key);
    const result = currentResult;
    this.currentResult = softwareDecrypter.decrypt(currentChunk.buffer, 0, iv);
    this.currentIV = currentChunk.slice(-16).buffer;
    if (!result) {
      return null;
    }
    return result;
  }
  webCryptoDecrypt(data, key, iv, aesMode) {
    if (this.key !== key || !this.fastAesKey) {
      if (!this.subtle) {
        return Promise.resolve(this.onWebCryptoError(data, key, iv, aesMode));
      }
      this.key = key;
      this.fastAesKey = new FastAESKey(this.subtle, key, aesMode);
    }
    return this.fastAesKey.expandKey().then((aesKey) => {
      if (!this.subtle) {
        return Promise.reject(new Error("web crypto not initialized"));
      }
      this.logOnce("WebCrypto AES decrypt");
      const crypto2 = new AESCrypto(this.subtle, new Uint8Array(iv), aesMode);
      return crypto2.decrypt(data.buffer, aesKey);
    }).catch((err) => {
      logger.warn(`[decrypter]: WebCrypto Error, disable WebCrypto API, ${err.name}: ${err.message}`);
      return this.onWebCryptoError(data, key, iv, aesMode);
    });
  }
  onWebCryptoError(data, key, iv, aesMode) {
    const enableSoftwareAES = this.enableSoftwareAES;
    if (enableSoftwareAES) {
      this.useSoftware = true;
      this.logEnabled = true;
      this.softwareDecrypt(data, key, iv, aesMode);
      const decryptResult = this.flush();
      if (decryptResult) {
        return decryptResult.buffer;
      }
    }
    throw new Error("WebCrypto" + (enableSoftwareAES ? " and softwareDecrypt" : "") + ": failed to decrypt data");
  }
  getValidChunk(data) {
    let currentChunk = data;
    const splitPoint = data.length - data.length % CHUNK_SIZE;
    if (splitPoint !== data.length) {
      currentChunk = data.slice(0, splitPoint);
      this.remainderData = data.slice(splitPoint);
    }
    return currentChunk;
  }
  logOnce(msg) {
    if (!this.logEnabled) {
      return;
    }
    logger.log(`[decrypter]: ${msg}`);
    this.logEnabled = false;
  }
};
var MIN_CHUNK_SIZE = Math.pow(2, 17);
var FragmentLoader = class {
  constructor(config) {
    this.config = void 0;
    this.loader = null;
    this.partLoadTimeout = -1;
    this.config = config;
  }
  destroy() {
    if (this.loader) {
      this.loader.destroy();
      this.loader = null;
    }
  }
  abort() {
    if (this.loader) {
      this.loader.abort();
    }
  }
  load(frag, onProgress) {
    const url = frag.url;
    if (!url) {
      return Promise.reject(new LoadError({
        type: ErrorTypes.NETWORK_ERROR,
        details: ErrorDetails.FRAG_LOAD_ERROR,
        fatal: false,
        frag,
        error: new Error(`Fragment does not have a ${url ? "part list" : "url"}`),
        networkDetails: null
      }));
    }
    this.abort();
    const config = this.config;
    const FragmentILoader = config.fLoader;
    const DefaultILoader = config.loader;
    return new Promise((resolve, reject) => {
      if (this.loader) {
        this.loader.destroy();
      }
      if (frag.gap) {
        if (frag.tagList.some((tags) => tags[0] === "GAP")) {
          reject(createGapLoadError(frag));
          return;
        } else {
          frag.gap = false;
        }
      }
      const loader = this.loader = FragmentILoader ? new FragmentILoader(config) : new DefaultILoader(config);
      const loaderContext = createLoaderContext(frag);
      frag.loader = loader;
      const loadPolicy = getLoaderConfigWithoutReties(config.fragLoadPolicy.default);
      const loaderConfig = {
        loadPolicy,
        timeout: loadPolicy.maxLoadTimeMs,
        maxRetry: 0,
        retryDelay: 0,
        maxRetryDelay: 0,
        highWaterMark: frag.sn === "initSegment" ? Infinity : MIN_CHUNK_SIZE
      };
      frag.stats = loader.stats;
      const callbacks = {
        onSuccess: (response, stats, context, networkDetails) => {
          this.resetLoader(frag, loader);
          let payload = response.data;
          if (context.resetIV && frag.decryptdata) {
            frag.decryptdata.iv = new Uint8Array(payload.slice(0, 16));
            payload = payload.slice(16);
          }
          resolve({
            frag,
            part: null,
            payload,
            networkDetails
          });
        },
        onError: (response, context, networkDetails, stats) => {
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.FRAG_LOAD_ERROR,
            fatal: false,
            frag,
            response: _objectSpread2({
              url,
              data: void 0
            }, response),
            error: new Error(`HTTP Error ${response.code} ${response.text}`),
            networkDetails,
            stats
          }));
        },
        onAbort: (stats, context, networkDetails) => {
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.INTERNAL_ABORTED,
            fatal: false,
            frag,
            error: new Error("Aborted"),
            networkDetails,
            stats
          }));
        },
        onTimeout: (stats, context, networkDetails) => {
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.FRAG_LOAD_TIMEOUT,
            fatal: false,
            frag,
            error: new Error(`Timeout after ${loaderConfig.timeout}ms`),
            networkDetails,
            stats
          }));
        }
      };
      if (onProgress) {
        callbacks.onProgress = (stats, context, data, networkDetails) => onProgress({
          frag,
          part: null,
          payload: data,
          networkDetails
        });
      }
      loader.load(loaderContext, loaderConfig, callbacks);
    });
  }
  loadPart(frag, part, onProgress) {
    this.abort();
    const config = this.config;
    const FragmentILoader = config.fLoader;
    const DefaultILoader = config.loader;
    return new Promise((resolve, reject) => {
      if (this.loader) {
        this.loader.destroy();
      }
      if (frag.gap || part.gap) {
        reject(createGapLoadError(frag, part));
        return;
      }
      const loader = this.loader = FragmentILoader ? new FragmentILoader(config) : new DefaultILoader(config);
      const loaderContext = createLoaderContext(frag, part);
      frag.loader = loader;
      const loadPolicy = getLoaderConfigWithoutReties(config.fragLoadPolicy.default);
      const loaderConfig = {
        loadPolicy,
        timeout: loadPolicy.maxLoadTimeMs,
        maxRetry: 0,
        retryDelay: 0,
        maxRetryDelay: 0,
        highWaterMark: MIN_CHUNK_SIZE
      };
      part.stats = loader.stats;
      loader.load(loaderContext, loaderConfig, {
        onSuccess: (response, stats, context, networkDetails) => {
          this.resetLoader(frag, loader);
          this.updateStatsFromPart(frag, part);
          const partLoadedData = {
            frag,
            part,
            payload: response.data,
            networkDetails
          };
          onProgress(partLoadedData);
          resolve(partLoadedData);
        },
        onError: (response, context, networkDetails, stats) => {
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.FRAG_LOAD_ERROR,
            fatal: false,
            frag,
            part,
            response: _objectSpread2({
              url: loaderContext.url,
              data: void 0
            }, response),
            error: new Error(`HTTP Error ${response.code} ${response.text}`),
            networkDetails,
            stats
          }));
        },
        onAbort: (stats, context, networkDetails) => {
          frag.stats.aborted = part.stats.aborted;
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.INTERNAL_ABORTED,
            fatal: false,
            frag,
            part,
            error: new Error("Aborted"),
            networkDetails,
            stats
          }));
        },
        onTimeout: (stats, context, networkDetails) => {
          this.resetLoader(frag, loader);
          reject(new LoadError({
            type: ErrorTypes.NETWORK_ERROR,
            details: ErrorDetails.FRAG_LOAD_TIMEOUT,
            fatal: false,
            frag,
            part,
            error: new Error(`Timeout after ${loaderConfig.timeout}ms`),
            networkDetails,
            stats
          }));
        }
      });
    });
  }
  updateStatsFromPart(frag, part) {
    const fragStats = frag.stats;
    const partStats = part.stats;
    const partTotal = partStats.total;
    fragStats.loaded += partStats.loaded;
    if (partTotal) {
      const estTotalParts = Math.round(frag.duration / part.duration);
      const estLoadedParts = Math.min(Math.round(fragStats.loaded / partTotal), estTotalParts);
      const estRemainingParts = estTotalParts - estLoadedParts;
      const estRemainingBytes = estRemainingParts * Math.round(fragStats.loaded / estLoadedParts);
      fragStats.total = fragStats.loaded + estRemainingBytes;
    } else {
      fragStats.total = Math.max(fragStats.loaded, fragStats.total);
    }
    const fragLoading = fragStats.loading;
    const partLoading = partStats.loading;
    if (fragLoading.start) {
      fragLoading.first += partLoading.first - partLoading.start;
    } else {
      fragLoading.start = partLoading.start;
      fragLoading.first = partLoading.first;
    }
    fragLoading.end = partLoading.end;
  }
  resetLoader(frag, loader) {
    frag.loader = null;
    if (this.loader === loader) {
      self.clearTimeout(this.partLoadTimeout);
      this.loader = null;
    }
    loader.destroy();
  }
};
function createLoaderContext(frag, part = null) {
  const segment = part || frag;
  const loaderContext = {
    frag,
    part,
    responseType: "arraybuffer",
    url: segment.url,
    headers: {},
    rangeStart: 0,
    rangeEnd: 0
  };
  const start = segment.byteRangeStartOffset;
  const end = segment.byteRangeEndOffset;
  if (isFiniteNumber(start) && isFiniteNumber(end)) {
    var _frag$decryptdata;
    let byteRangeStart = start;
    let byteRangeEnd = end;
    if (frag.sn === "initSegment" && isMethodFullSegmentAesCbc((_frag$decryptdata = frag.decryptdata) == null ? void 0 : _frag$decryptdata.method)) {
      const fragmentLen = end - start;
      if (fragmentLen % 16) {
        byteRangeEnd = end + (16 - fragmentLen % 16);
      }
      if (start !== 0) {
        loaderContext.resetIV = true;
        byteRangeStart = start - 16;
      }
    }
    loaderContext.rangeStart = byteRangeStart;
    loaderContext.rangeEnd = byteRangeEnd;
  }
  return loaderContext;
}
function createGapLoadError(frag, part) {
  const error = new Error(`GAP ${frag.gap ? "tag" : "attribute"} found`);
  const errorData = {
    type: ErrorTypes.MEDIA_ERROR,
    details: ErrorDetails.FRAG_GAP,
    fatal: false,
    frag,
    error,
    networkDetails: null
  };
  if (part) {
    errorData.part = part;
  }
  (part ? part : frag).stats.aborted = true;
  return new LoadError(errorData);
}
function isMethodFullSegmentAesCbc(method) {
  return method === "AES-128" || method === "AES-256";
}
var LoadError = class extends Error {
  constructor(data) {
    super(data.error.message);
    this.data = void 0;
    this.data = data;
  }
};
var TaskLoop = class extends Logger {
  constructor(label, logger2) {
    super(label, logger2);
    this._boundTick = void 0;
    this._tickTimer = null;
    this._tickInterval = null;
    this._tickCallCount = 0;
    this._boundTick = this.tick.bind(this);
  }
  destroy() {
    this.onHandlerDestroying();
    this.onHandlerDestroyed();
  }
  onHandlerDestroying() {
    this.clearNextTick();
    this.clearInterval();
  }
  onHandlerDestroyed() {
  }
  hasInterval() {
    return !!this._tickInterval;
  }
  hasNextTick() {
    return !!this._tickTimer;
  }
  setInterval(millis) {
    if (!this._tickInterval) {
      this._tickCallCount = 0;
      this._tickInterval = self.setInterval(this._boundTick, millis);
      return true;
    }
    return false;
  }
  clearInterval() {
    if (this._tickInterval) {
      self.clearInterval(this._tickInterval);
      this._tickInterval = null;
      return true;
    }
    return false;
  }
  clearNextTick() {
    if (this._tickTimer) {
      self.clearTimeout(this._tickTimer);
      this._tickTimer = null;
      return true;
    }
    return false;
  }
  tick() {
    this._tickCallCount++;
    if (this._tickCallCount === 1) {
      this.doTick();
      if (this._tickCallCount > 1) {
        this.tickImmediate();
      }
      this._tickCallCount = 0;
    }
  }
  tickImmediate() {
    this.clearNextTick();
    this._tickTimer = self.setTimeout(this._boundTick, 0);
  }
  doTick() {
  }
};
var ChunkMetadata = class {
  constructor(level, sn, id, size = 0, part = -1, partial = false) {
    this.level = void 0;
    this.sn = void 0;
    this.part = void 0;
    this.id = void 0;
    this.size = void 0;
    this.partial = void 0;
    this.transmuxing = getNewPerformanceTiming();
    this.buffering = {
      audio: getNewPerformanceTiming(),
      video: getNewPerformanceTiming(),
      audiovideo: getNewPerformanceTiming()
    };
    this.level = level;
    this.sn = sn;
    this.id = id;
    this.size = size;
    this.part = part;
    this.partial = partial;
  }
};
function getNewPerformanceTiming() {
  return {
    start: 0,
    executeStart: 0,
    executeEnd: 0,
    end: 0
  };
}
var noopBuffered = {
  length: 0,
  start: () => 0,
  end: () => 0
};
var BufferHelper = class {
  static isBuffered(media, position) {
    if (media) {
      const buffered = BufferHelper.getBuffered(media);
      for (let i = buffered.length; i--; ) {
        if (position >= buffered.start(i) && position <= buffered.end(i)) {
          return true;
        }
      }
    }
    return false;
  }
  static bufferedRanges(media) {
    if (media) {
      const timeRanges = BufferHelper.getBuffered(media);
      return BufferHelper.timeRangesToArray(timeRanges);
    }
    return [];
  }
  static timeRangesToArray(timeRanges) {
    const buffered = [];
    for (let i = 0; i < timeRanges.length; i++) {
      buffered.push({
        start: timeRanges.start(i),
        end: timeRanges.end(i)
      });
    }
    return buffered;
  }
  static bufferInfo(media, pos, maxHoleDuration) {
    if (media) {
      const buffered = BufferHelper.bufferedRanges(media);
      if (buffered.length) {
        return BufferHelper.bufferedInfo(buffered, pos, maxHoleDuration);
      }
    }
    return {
      len: 0,
      start: pos,
      end: pos,
      bufferedIndex: -1
    };
  }
  static bufferedInfo(buffered, pos, maxHoleDuration) {
    pos = Math.max(0, pos);
    if (buffered.length > 1) {
      buffered.sort((a, b) => a.start - b.start || b.end - a.end);
    }
    let bufferedIndex = -1;
    let buffered2 = [];
    if (maxHoleDuration) {
      for (let i = 0; i < buffered.length; i++) {
        if (pos >= buffered[i].start && pos <= buffered[i].end) {
          bufferedIndex = i;
        }
        const buf2len = buffered2.length;
        if (buf2len) {
          const buf2end = buffered2[buf2len - 1].end;
          if (buffered[i].start - buf2end < maxHoleDuration) {
            if (buffered[i].end > buf2end) {
              buffered2[buf2len - 1].end = buffered[i].end;
            }
          } else {
            buffered2.push(buffered[i]);
          }
        } else {
          buffered2.push(buffered[i]);
        }
      }
    } else {
      buffered2 = buffered;
    }
    let bufferLen = 0;
    let nextStart;
    let bufferStart = pos;
    let bufferEnd = pos;
    for (let i = 0; i < buffered2.length; i++) {
      const start = buffered2[i].start;
      const end = buffered2[i].end;
      if (bufferedIndex === -1 && pos >= start && pos <= end) {
        bufferedIndex = i;
      }
      if (pos + maxHoleDuration >= start && pos < end) {
        bufferStart = start;
        bufferEnd = end;
        bufferLen = bufferEnd - pos;
      } else if (pos + maxHoleDuration < start) {
        nextStart = start;
        break;
      }
    }
    return {
      len: bufferLen,
      start: bufferStart || 0,
      end: bufferEnd || 0,
      nextStart,
      buffered,
      bufferedIndex
    };
  }
  static getBuffered(media) {
    try {
      return media.buffered || noopBuffered;
    } catch (e) {
      logger.log("failed to get media.buffered", e);
      return noopBuffered;
    }
  }
};
var VARIABLE_REPLACEMENT_REGEX = /\{\$([a-zA-Z0-9-_]+)\}/g;
function hasVariableReferences(str) {
  return VARIABLE_REPLACEMENT_REGEX.test(str);
}
function substituteVariables(parsed, value) {
  if (parsed.variableList !== null || parsed.hasVariableRefs) {
    const variableList = parsed.variableList;
    return value.replace(VARIABLE_REPLACEMENT_REGEX, (variableReference) => {
      const variableName = variableReference.substring(2, variableReference.length - 1);
      const variableValue = variableList == null ? void 0 : variableList[variableName];
      if (variableValue === void 0) {
        parsed.playlistParsingError || (parsed.playlistParsingError = new Error(`Missing preceding EXT-X-DEFINE tag for Variable Reference: "${variableName}"`));
        return variableReference;
      }
      return variableValue;
    });
  }
  return value;
}
function addVariableDefinition(parsed, attr, parentUrl) {
  let variableList = parsed.variableList;
  if (!variableList) {
    parsed.variableList = variableList = {};
  }
  let NAME;
  let VALUE;
  if ("QUERYPARAM" in attr) {
    NAME = attr.QUERYPARAM;
    try {
      const searchParams = new self.URL(parentUrl).searchParams;
      if (searchParams.has(NAME)) {
        VALUE = searchParams.get(NAME);
      } else {
        throw new Error(`"${NAME}" does not match any query parameter in URI: "${parentUrl}"`);
      }
    } catch (error) {
      parsed.playlistParsingError || (parsed.playlistParsingError = new Error(`EXT-X-DEFINE QUERYPARAM: ${error.message}`));
    }
  } else {
    NAME = attr.NAME;
    VALUE = attr.VALUE;
  }
  if (NAME in variableList) {
    parsed.playlistParsingError || (parsed.playlistParsingError = new Error(`EXT-X-DEFINE duplicate Variable Name declarations: "${NAME}"`));
  } else {
    variableList[NAME] = VALUE || "";
  }
}
function importVariableDefinition(parsed, attr, sourceVariableList) {
  const IMPORT = attr.IMPORT;
  if (sourceVariableList && IMPORT in sourceVariableList) {
    let variableList = parsed.variableList;
    if (!variableList) {
      parsed.variableList = variableList = {};
    }
    variableList[IMPORT] = sourceVariableList[IMPORT];
  } else {
    parsed.playlistParsingError || (parsed.playlistParsingError = new Error(`EXT-X-DEFINE IMPORT attribute not found in Multivariant Playlist: "${IMPORT}"`));
  }
}
var DECIMAL_RESOLUTION_REGEX = /^(\d+)x(\d+)$/;
var ATTR_LIST_REGEX = /(.+?)=(".*?"|.*?)(?:,|$)/g;
var AttrList = class {
  constructor(attrs, parsed) {
    if (typeof attrs === "string") {
      attrs = AttrList.parseAttrList(attrs, parsed);
    }
    _extends(this, attrs);
  }
  get clientAttrs() {
    return Object.keys(this).filter((attr) => attr.substring(0, 2) === "X-");
  }
  decimalInteger(attrName) {
    const intValue = parseInt(this[attrName], 10);
    if (intValue > Number.MAX_SAFE_INTEGER) {
      return Infinity;
    }
    return intValue;
  }
  hexadecimalInteger(attrName) {
    if (this[attrName]) {
      let stringValue = (this[attrName] || "0x").slice(2);
      stringValue = (stringValue.length & 1 ? "0" : "") + stringValue;
      const value = new Uint8Array(stringValue.length / 2);
      for (let i = 0; i < stringValue.length / 2; i++) {
        value[i] = parseInt(stringValue.slice(i * 2, i * 2 + 2), 16);
      }
      return value;
    }
    return null;
  }
  hexadecimalIntegerAsNumber(attrName) {
    const intValue = parseInt(this[attrName], 16);
    if (intValue > Number.MAX_SAFE_INTEGER) {
      return Infinity;
    }
    return intValue;
  }
  decimalFloatingPoint(attrName) {
    return parseFloat(this[attrName]);
  }
  optionalFloat(attrName, defaultValue) {
    const value = this[attrName];
    return value ? parseFloat(value) : defaultValue;
  }
  enumeratedString(attrName) {
    return this[attrName];
  }
  enumeratedStringList(attrName, dict) {
    const attrValue = this[attrName];
    return (attrValue ? attrValue.split(/[ ,]+/) : []).reduce((result, identifier) => {
      result[identifier.toLowerCase()] = true;
      return result;
    }, dict);
  }
  bool(attrName) {
    return this[attrName] === "YES";
  }
  decimalResolution(attrName) {
    const res = DECIMAL_RESOLUTION_REGEX.exec(this[attrName]);
    if (res === null) {
      return void 0;
    }
    return {
      width: parseInt(res[1], 10),
      height: parseInt(res[2], 10)
    };
  }
  static parseAttrList(input, parsed) {
    let match;
    const attrs = {};
    const quote = '"';
    ATTR_LIST_REGEX.lastIndex = 0;
    while ((match = ATTR_LIST_REGEX.exec(input)) !== null) {
      const name = match[1].trim();
      let value = match[2];
      const quotedString = value.indexOf(quote) === 0 && value.lastIndexOf(quote) === value.length - 1;
      let hexadecimalSequence = false;
      if (quotedString) {
        value = value.slice(1, -1);
      } else {
        switch (name) {
          case "IV":
          case "SCTE35-CMD":
          case "SCTE35-IN":
          case "SCTE35-OUT":
            hexadecimalSequence = true;
        }
      }
      if (parsed && (quotedString || hexadecimalSequence)) {
        {
          value = substituteVariables(parsed, value);
        }
      } else if (!hexadecimalSequence && !quotedString) {
        switch (name) {
          case "CLOSED-CAPTIONS":
            if (value === "NONE") {
              break;
            }
          case "ALLOWED-CPC":
          case "CLASS":
          case "ASSOC-LANGUAGE":
          case "AUDIO":
          case "BYTERANGE":
          case "CHANNELS":
          case "CHARACTERISTICS":
          case "CODECS":
          case "DATA-ID":
          case "END-DATE":
          case "GROUP-ID":
          case "ID":
          case "IMPORT":
          case "INSTREAM-ID":
          case "KEYFORMAT":
          case "KEYFORMATVERSIONS":
          case "LANGUAGE":
          case "NAME":
          case "PATHWAY-ID":
          case "QUERYPARAM":
          case "RECENTLY-REMOVED-DATERANGES":
          case "SERVER-URI":
          case "STABLE-RENDITION-ID":
          case "STABLE-VARIANT-ID":
          case "START-DATE":
          case "SUBTITLES":
          case "SUPPLEMENTAL-CODECS":
          case "URI":
          case "VALUE":
          case "VIDEO":
          case "X-ASSET-LIST":
          case "X-ASSET-URI":
            logger.warn(`${input}: attribute ${name} is missing quotes`);
        }
      }
      attrs[name] = value;
    }
    return attrs;
  }
};
var CLASS_INTERSTITIAL = "com.apple.hls.interstitial";
function isDateRangeCueAttribute(attrName) {
  return attrName !== "ID" && attrName !== "CLASS" && attrName !== "CUE" && attrName !== "START-DATE" && attrName !== "DURATION" && attrName !== "END-DATE" && attrName !== "END-ON-NEXT";
}
function isSCTE35Attribute(attrName) {
  return attrName === "SCTE35-OUT" || attrName === "SCTE35-IN" || attrName === "SCTE35-CMD";
}
var DateRange = class {
  constructor(dateRangeAttr, dateRangeWithSameId, tagCount = 0) {
    var _dateRangeWithSameId$;
    this.attr = void 0;
    this.tagAnchor = void 0;
    this.tagOrder = void 0;
    this._startDate = void 0;
    this._endDate = void 0;
    this._dateAtEnd = void 0;
    this._cue = void 0;
    this._badValueForSameId = void 0;
    this.tagAnchor = (dateRangeWithSameId == null ? void 0 : dateRangeWithSameId.tagAnchor) || null;
    this.tagOrder = (_dateRangeWithSameId$ = dateRangeWithSameId == null ? void 0 : dateRangeWithSameId.tagOrder) != null ? _dateRangeWithSameId$ : tagCount;
    if (dateRangeWithSameId) {
      const previousAttr = dateRangeWithSameId.attr;
      for (const key in previousAttr) {
        if (Object.prototype.hasOwnProperty.call(dateRangeAttr, key) && dateRangeAttr[key] !== previousAttr[key]) {
          logger.warn(`DATERANGE tag attribute: "${key}" does not match for tags with ID: "${dateRangeAttr.ID}"`);
          this._badValueForSameId = key;
          break;
        }
      }
      dateRangeAttr = _extends(new AttrList({}), previousAttr, dateRangeAttr);
    }
    this.attr = dateRangeAttr;
    if (dateRangeWithSameId) {
      this._startDate = dateRangeWithSameId._startDate;
      this._cue = dateRangeWithSameId._cue;
      this._endDate = dateRangeWithSameId._endDate;
      this._dateAtEnd = dateRangeWithSameId._dateAtEnd;
    } else {
      this._startDate = new Date(dateRangeAttr["START-DATE"]);
    }
    if ("END-DATE" in this.attr) {
      const endDate = (dateRangeWithSameId == null ? void 0 : dateRangeWithSameId.endDate) || new Date(this.attr["END-DATE"]);
      if (isFiniteNumber(endDate.getTime())) {
        this._endDate = endDate;
      }
    }
  }
  get id() {
    return this.attr.ID;
  }
  get class() {
    return this.attr.CLASS;
  }
  get cue() {
    const _cue = this._cue;
    if (_cue === void 0) {
      return this._cue = this.attr.enumeratedStringList(this.attr.CUE ? "CUE" : "X-CUE", {
        pre: false,
        post: false,
        once: false
      });
    }
    return _cue;
  }
  get startTime() {
    const {
      tagAnchor
    } = this;
    if (tagAnchor === null || tagAnchor.programDateTime === null) {
      logger.warn(`Expected tagAnchor Fragment with PDT set for DateRange "${this.id}": ${tagAnchor}`);
      return NaN;
    }
    return tagAnchor.start + (this.startDate.getTime() - tagAnchor.programDateTime) / 1e3;
  }
  get startDate() {
    return this._startDate;
  }
  get endDate() {
    const dateAtEnd = this._endDate || this._dateAtEnd;
    if (dateAtEnd) {
      return dateAtEnd;
    }
    const duration = this.duration;
    if (duration !== null) {
      return this._dateAtEnd = new Date(this._startDate.getTime() + duration * 1e3);
    }
    return null;
  }
  get duration() {
    if ("DURATION" in this.attr) {
      const duration = this.attr.decimalFloatingPoint("DURATION");
      if (isFiniteNumber(duration)) {
        return duration;
      }
    } else if (this._endDate) {
      return (this._endDate.getTime() - this._startDate.getTime()) / 1e3;
    }
    return null;
  }
  get plannedDuration() {
    if ("PLANNED-DURATION" in this.attr) {
      return this.attr.decimalFloatingPoint("PLANNED-DURATION");
    }
    return null;
  }
  get endOnNext() {
    return this.attr.bool("END-ON-NEXT");
  }
  get isInterstitial() {
    return this.class === CLASS_INTERSTITIAL;
  }
  get isValid() {
    return !!this.id && !this._badValueForSameId && isFiniteNumber(this.startDate.getTime()) && (this.duration === null || this.duration >= 0) && (!this.endOnNext || !!this.class) && (!this.attr.CUE || !this.cue.pre && !this.cue.post || this.cue.pre !== this.cue.post) && (!this.isInterstitial || "X-ASSET-URI" in this.attr || "X-ASSET-LIST" in this.attr);
  }
};
var DEFAULT_TARGET_DURATION = 10;
var LevelDetails = class {
  constructor(baseUrl) {
    this.PTSKnown = false;
    this.alignedSliding = false;
    this.averagetargetduration = void 0;
    this.endCC = 0;
    this.endSN = 0;
    this.fragments = void 0;
    this.fragmentHint = void 0;
    this.partList = null;
    this.dateRanges = void 0;
    this.dateRangeTagCount = 0;
    this.live = true;
    this.requestScheduled = -1;
    this.ageHeader = 0;
    this.advancedDateTime = void 0;
    this.updated = true;
    this.advanced = true;
    this.misses = 0;
    this.startCC = 0;
    this.startSN = 0;
    this.startTimeOffset = null;
    this.targetduration = 0;
    this.totalduration = 0;
    this.type = null;
    this.url = void 0;
    this.m3u8 = "";
    this.version = null;
    this.canBlockReload = false;
    this.canSkipUntil = 0;
    this.canSkipDateRanges = false;
    this.skippedSegments = 0;
    this.recentlyRemovedDateranges = void 0;
    this.partHoldBack = 0;
    this.holdBack = 0;
    this.partTarget = 0;
    this.preloadHint = void 0;
    this.renditionReports = void 0;
    this.tuneInGoal = 0;
    this.deltaUpdateFailed = void 0;
    this.driftStartTime = 0;
    this.driftEndTime = 0;
    this.driftStart = 0;
    this.driftEnd = 0;
    this.encryptedFragments = void 0;
    this.playlistParsingError = null;
    this.variableList = null;
    this.hasVariableRefs = false;
    this.appliedTimelineOffset = void 0;
    this.fragments = [];
    this.encryptedFragments = [];
    this.dateRanges = {};
    this.url = baseUrl;
  }
  reloaded(previous) {
    if (!previous) {
      this.advanced = true;
      this.updated = true;
      return;
    }
    const partSnDiff = this.lastPartSn - previous.lastPartSn;
    const partIndexDiff = this.lastPartIndex - previous.lastPartIndex;
    this.updated = this.endSN !== previous.endSN || !!partIndexDiff || !!partSnDiff || !this.live;
    this.advanced = this.endSN > previous.endSN || partSnDiff > 0 || partSnDiff === 0 && partIndexDiff > 0;
    if (this.updated || this.advanced) {
      this.misses = Math.floor(previous.misses * 0.6);
    } else {
      this.misses = previous.misses + 1;
    }
  }
  get hasProgramDateTime() {
    if (this.fragments.length) {
      return isFiniteNumber(this.fragments[this.fragments.length - 1].programDateTime);
    }
    return false;
  }
  get levelTargetDuration() {
    return this.averagetargetduration || this.targetduration || DEFAULT_TARGET_DURATION;
  }
  get drift() {
    const runTime = this.driftEndTime - this.driftStartTime;
    if (runTime > 0) {
      const runDuration = this.driftEnd - this.driftStart;
      return runDuration * 1e3 / runTime;
    }
    return 1;
  }
  get edge() {
    return this.partEnd || this.fragmentEnd;
  }
  get partEnd() {
    var _this$partList;
    if ((_this$partList = this.partList) != null && _this$partList.length) {
      return this.partList[this.partList.length - 1].end;
    }
    return this.fragmentEnd;
  }
  get fragmentEnd() {
    var _this$fragments;
    if ((_this$fragments = this.fragments) != null && _this$fragments.length) {
      return this.fragments[this.fragments.length - 1].end;
    }
    return 0;
  }
  get fragmentStart() {
    var _this$fragments2;
    if ((_this$fragments2 = this.fragments) != null && _this$fragments2.length) {
      return this.fragments[0].start;
    }
    return 0;
  }
  get age() {
    if (this.advancedDateTime) {
      return Math.max(Date.now() - this.advancedDateTime, 0) / 1e3;
    }
    return 0;
  }
  get lastPartIndex() {
    var _this$partList2;
    if ((_this$partList2 = this.partList) != null && _this$partList2.length) {
      return this.partList[this.partList.length - 1].index;
    }
    return -1;
  }
  get maxPartIndex() {
    const partList = this.partList;
    if (partList) {
      const lastIndex = this.lastPartIndex;
      if (lastIndex !== -1) {
        for (let i = partList.length; i--; ) {
          if (partList[i].index > lastIndex) {
            return partList[i].index;
          }
        }
        return lastIndex;
      }
    }
    return 0;
  }
  get lastPartSn() {
    var _this$partList3;
    if ((_this$partList3 = this.partList) != null && _this$partList3.length) {
      return this.partList[this.partList.length - 1].fragment.sn;
    }
    return this.endSN;
  }
  get expired() {
    if (this.live && this.age && this.misses < 3) {
      const playlistWindowDuration = this.partEnd - this.fragmentStart;
      return this.age > Math.max(playlistWindowDuration, this.totalduration) + this.levelTargetDuration;
    }
    return false;
  }
};
function isFullSegmentEncryption(method) {
  return method === "AES-128" || method === "AES-256" || method === "AES-256-CTR";
}
function getAesModeFromFullSegmentMethod(method) {
  switch (method) {
    case "AES-128":
    case "AES-256":
      return DecrypterAesMode.cbc;
    case "AES-256-CTR":
      return DecrypterAesMode.ctr;
    default:
      throw new Error(`invalid full segment method ${method}`);
  }
}
function base64Decode(base64encodedStr) {
  return Uint8Array.from(atob(base64encodedStr), (c) => c.charCodeAt(0));
}
function strToUtf8array(str) {
  return Uint8Array.from(unescape(encodeURIComponent(str)), (c) => c.charCodeAt(0));
}
function getKeyIdBytes(str) {
  const keyIdbytes = strToUtf8array(str).subarray(0, 16);
  const paddedkeyIdbytes = new Uint8Array(16);
  paddedkeyIdbytes.set(keyIdbytes, 16 - keyIdbytes.length);
  return paddedkeyIdbytes;
}
function changeEndianness(keyId) {
  const swap = function swap2(array, from, to) {
    const cur = array[from];
    array[from] = array[to];
    array[to] = cur;
  };
  swap(keyId, 0, 3);
  swap(keyId, 1, 2);
  swap(keyId, 4, 5);
  swap(keyId, 6, 7);
}
function convertDataUriToArrayBytes(uri) {
  const colonsplit = uri.split(":");
  let keydata = null;
  if (colonsplit[0] === "data" && colonsplit.length === 2) {
    const semicolonsplit = colonsplit[1].split(";");
    const commasplit = semicolonsplit[semicolonsplit.length - 1].split(",");
    if (commasplit.length === 2) {
      const isbase64 = commasplit[0] === "base64";
      const data = commasplit[1];
      if (isbase64) {
        semicolonsplit.splice(-1, 1);
        keydata = base64Decode(data);
      } else {
        keydata = getKeyIdBytes(data);
      }
    }
  }
  return keydata;
}
var optionalSelf = typeof self !== "undefined" ? self : void 0;
var KeySystems = {
  CLEARKEY: "org.w3.clearkey",
  FAIRPLAY: "com.apple.fps",
  PLAYREADY: "com.microsoft.playready",
  WIDEVINE: "com.widevine.alpha"
};
var KeySystemFormats = {
  CLEARKEY: "org.w3.clearkey",
  FAIRPLAY: "com.apple.streamingkeydelivery",
  PLAYREADY: "com.microsoft.playready",
  WIDEVINE: "urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"
};
function keySystemFormatToKeySystemDomain(format2) {
  switch (format2) {
    case KeySystemFormats.FAIRPLAY:
      return KeySystems.FAIRPLAY;
    case KeySystemFormats.PLAYREADY:
      return KeySystems.PLAYREADY;
    case KeySystemFormats.WIDEVINE:
      return KeySystems.WIDEVINE;
    case KeySystemFormats.CLEARKEY:
      return KeySystems.CLEARKEY;
  }
}
function keySystemDomainToKeySystemFormat(keySystem) {
  switch (keySystem) {
    case KeySystems.FAIRPLAY:
      return KeySystemFormats.FAIRPLAY;
    case KeySystems.PLAYREADY:
      return KeySystemFormats.PLAYREADY;
    case KeySystems.WIDEVINE:
      return KeySystemFormats.WIDEVINE;
    case KeySystems.CLEARKEY:
      return KeySystemFormats.CLEARKEY;
  }
}
function getKeySystemsForConfig(config) {
  const {
    drmSystems,
    widevineLicenseUrl
  } = config;
  const keySystemsToAttempt = drmSystems ? [KeySystems.FAIRPLAY, KeySystems.WIDEVINE, KeySystems.PLAYREADY, KeySystems.CLEARKEY].filter((keySystem) => !!drmSystems[keySystem]) : [];
  if (!keySystemsToAttempt[KeySystems.WIDEVINE] && widevineLicenseUrl) {
    keySystemsToAttempt.push(KeySystems.WIDEVINE);
  }
  return keySystemsToAttempt;
}
var requestMediaKeySystemAccess = function(_optionalSelf$navigat) {
  if (optionalSelf != null && (_optionalSelf$navigat = optionalSelf.navigator) != null && _optionalSelf$navigat.requestMediaKeySystemAccess) {
    return self.navigator.requestMediaKeySystemAccess.bind(self.navigator);
  } else {
    return null;
  }
}();
function getSupportedMediaKeySystemConfigurations(keySystem, audioCodecs, videoCodecs, drmSystemOptions) {
  let initDataTypes;
  switch (keySystem) {
    case KeySystems.FAIRPLAY:
      initDataTypes = ["cenc", "sinf"];
      break;
    case KeySystems.WIDEVINE:
    case KeySystems.PLAYREADY:
      initDataTypes = ["cenc"];
      break;
    case KeySystems.CLEARKEY:
      initDataTypes = ["cenc", "keyids"];
      break;
    default:
      throw new Error(`Unknown key-system: ${keySystem}`);
  }
  return createMediaKeySystemConfigurations(initDataTypes, audioCodecs, videoCodecs, drmSystemOptions);
}
function createMediaKeySystemConfigurations(initDataTypes, audioCodecs, videoCodecs, drmSystemOptions) {
  const baseConfig = {
    initDataTypes,
    persistentState: drmSystemOptions.persistentState || "optional",
    distinctiveIdentifier: drmSystemOptions.distinctiveIdentifier || "optional",
    sessionTypes: drmSystemOptions.sessionTypes || [drmSystemOptions.sessionType || "temporary"],
    audioCapabilities: audioCodecs.map((codec) => ({
      contentType: `audio/mp4; codecs=${codec}`,
      robustness: drmSystemOptions.audioRobustness || "",
      encryptionScheme: drmSystemOptions.audioEncryptionScheme || null
    })),
    videoCapabilities: videoCodecs.map((codec) => ({
      contentType: `video/mp4; codecs=${codec}`,
      robustness: drmSystemOptions.videoRobustness || "",
      encryptionScheme: drmSystemOptions.videoEncryptionScheme || null
    }))
  };
  return [baseConfig];
}
function isPersistentSessionType(drmSystemOptions) {
  var _drmSystemOptions$ses;
  return drmSystemOptions.sessionType === "persistent-license" || !!((_drmSystemOptions$ses = drmSystemOptions.sessionTypes) != null && _drmSystemOptions$ses.some((type) => type === "persistent-license"));
}
function parsePlayReadyWRM(keyBytes) {
  const keyBytesUtf16 = new Uint16Array(keyBytes.buffer, keyBytes.byteOffset, keyBytes.byteLength / 2);
  const keyByteStr = String.fromCharCode.apply(null, Array.from(keyBytesUtf16));
  const xmlKeyBytes = keyByteStr.substring(keyByteStr.indexOf("<"), keyByteStr.length);
  const parser = new DOMParser();
  const xmlDoc = parser.parseFromString(xmlKeyBytes, "text/xml");
  const keyData = xmlDoc.getElementsByTagName("KID")[0];
  if (keyData) {
    const keyId = keyData.childNodes[0] ? keyData.childNodes[0].nodeValue : keyData.getAttribute("VALUE");
    if (keyId) {
      const keyIdArray = base64Decode(keyId).subarray(0, 16);
      changeEndianness(keyIdArray);
      return keyIdArray;
    }
  }
  return null;
}
var keyUriToKeyIdMap = {};
var LevelKey = class {
  static clearKeyUriToKeyIdMap() {
    keyUriToKeyIdMap = {};
  }
  constructor(method, uri, format2, formatversions = [1], iv = null, keyId) {
    this.uri = void 0;
    this.method = void 0;
    this.keyFormat = void 0;
    this.keyFormatVersions = void 0;
    this.encrypted = void 0;
    this.isCommonEncryption = void 0;
    this.iv = null;
    this.key = null;
    this.keyId = null;
    this.pssh = null;
    this.method = method;
    this.uri = uri;
    this.keyFormat = format2;
    this.keyFormatVersions = formatversions;
    this.iv = iv;
    this.encrypted = method ? method !== "NONE" : false;
    this.isCommonEncryption = this.encrypted && !isFullSegmentEncryption(method);
    if (keyId != null && keyId.startsWith("0x")) {
      this.keyId = new Uint8Array(hexToArrayBuffer(keyId));
    }
  }
  matches(key) {
    var _key$iv, _this$iv;
    return key.uri === this.uri && key.method === this.method && key.encrypted === this.encrypted && key.keyFormat === this.keyFormat && key.keyFormatVersions.join(",") === this.keyFormatVersions.join(",") && ((_key$iv = key.iv) == null ? void 0 : _key$iv.join(",")) === ((_this$iv = this.iv) == null ? void 0 : _this$iv.join(","));
  }
  isSupported() {
    if (this.method) {
      if (isFullSegmentEncryption(this.method) || this.method === "NONE") {
        return true;
      }
      if (this.keyFormat === "identity") {
        return this.method === "SAMPLE-AES";
      } else {
        switch (this.keyFormat) {
          case KeySystemFormats.FAIRPLAY:
          case KeySystemFormats.WIDEVINE:
          case KeySystemFormats.PLAYREADY:
          case KeySystemFormats.CLEARKEY:
            return ["ISO-23001-7", "SAMPLE-AES", "SAMPLE-AES-CENC", "SAMPLE-AES-CTR"].indexOf(this.method) !== -1;
        }
      }
    }
    return false;
  }
  getDecryptData(sn) {
    if (!this.encrypted || !this.uri) {
      return null;
    }
    if (isFullSegmentEncryption(this.method) && this.uri && !this.iv) {
      if (typeof sn !== "number") {
        logger.warn(`missing IV for initialization segment with method="${this.method}" - compliance issue`);
        sn = 0;
      }
      const iv = createInitializationVector(sn);
      const decryptdata = new LevelKey(this.method, this.uri, "identity", this.keyFormatVersions, iv);
      return decryptdata;
    }
    if (this.pssh && this.keyId) {
      return this;
    }
    const keyBytes = convertDataUriToArrayBytes(this.uri);
    if (keyBytes) {
      switch (this.keyFormat) {
        case KeySystemFormats.WIDEVINE:
          this.pssh = keyBytes;
          if (!this.keyId && keyBytes.length >= 22) {
            const offset = keyBytes.length - 22;
            this.keyId = keyBytes.subarray(offset, offset + 16);
          }
          break;
        case KeySystemFormats.PLAYREADY: {
          const PlayReadyKeySystemUUID = new Uint8Array([154, 4, 240, 121, 152, 64, 66, 134, 171, 146, 230, 91, 224, 136, 95, 149]);
          this.pssh = mp4pssh(PlayReadyKeySystemUUID, null, keyBytes);
          this.keyId = parsePlayReadyWRM(keyBytes);
          break;
        }
        default: {
          let keydata = keyBytes.subarray(0, 16);
          if (keydata.length !== 16) {
            const padded = new Uint8Array(16);
            padded.set(keydata, 16 - keydata.length);
            keydata = padded;
          }
          this.keyId = keydata;
          break;
        }
      }
    }
    if (!this.keyId || this.keyId.byteLength !== 16) {
      let keyId = keyUriToKeyIdMap[this.uri];
      if (!keyId) {
        const val = Object.keys(keyUriToKeyIdMap).length % Number.MAX_SAFE_INTEGER;
        keyId = new Uint8Array(16);
        const dv = new DataView(keyId.buffer, 12, 4);
        dv.setUint32(0, val);
        keyUriToKeyIdMap[this.uri] = keyId;
      }
      this.keyId = keyId;
    }
    return this;
  }
};
function createInitializationVector(segmentNumber) {
  const uint8View = new Uint8Array(16);
  for (let i = 12; i < 16; i++) {
    uint8View[i] = segmentNumber >> 8 * (15 - i) & 255;
  }
  return uint8View;
}
var MASTER_PLAYLIST_REGEX = /#EXT-X-STREAM-INF:([^\r\n]*)(?:[\r\n](?:#[^\r\n]*)?)*([^\r\n]+)|#EXT-X-(SESSION-DATA|SESSION-KEY|DEFINE|CONTENT-STEERING|START):([^\r\n]*)[\r\n]+/g;
var MASTER_PLAYLIST_MEDIA_REGEX = /#EXT-X-MEDIA:(.*)/g;
var IS_MEDIA_PLAYLIST = /^#EXT(?:INF|-X-TARGETDURATION):/m;
var LEVEL_PLAYLIST_REGEX_FAST = new RegExp([
  /#EXTINF:\s*(\d*(?:\.\d+)?)(?:,(.*)\s+)?/.source,
  /(?!#) *(\S[^\r\n]*)/.source,
  /#.*/.source
].join("|"), "g");
var LEVEL_PLAYLIST_REGEX_SLOW = new RegExp([/#EXT-X-(PROGRAM-DATE-TIME|BYTERANGE|DATERANGE|DEFINE|KEY|MAP|PART|PART-INF|PLAYLIST-TYPE|PRELOAD-HINT|RENDITION-REPORT|SERVER-CONTROL|SKIP|START):(.+)/.source, /#EXT-X-(BITRATE|DISCONTINUITY-SEQUENCE|MEDIA-SEQUENCE|TARGETDURATION|VERSION): *(\d+)/.source, /#EXT-X-(DISCONTINUITY|ENDLIST|GAP|INDEPENDENT-SEGMENTS)/.source, /(#)([^:]*):(.*)/.source, /(#)(.*)(?:.*)\r?\n?/.source].join("|"));
var M3U8Parser = class {
  static findGroup(groups, mediaGroupId) {
    for (let i = 0; i < groups.length; i++) {
      const group = groups[i];
      if (group.id === mediaGroupId) {
        return group;
      }
    }
  }
  static resolve(url, baseUrl) {
    return urlToolkitExports.buildAbsoluteURL(baseUrl, url, {
      alwaysNormalize: true
    });
  }
  static isMediaPlaylist(str) {
    return IS_MEDIA_PLAYLIST.test(str);
  }
  static parseMasterPlaylist(string, baseurl) {
    const hasVariableRefs = hasVariableReferences(string);
    const parsed = {
      contentSteering: null,
      levels: [],
      playlistParsingError: null,
      sessionData: null,
      sessionKeys: null,
      startTimeOffset: null,
      variableList: null,
      hasVariableRefs
    };
    const levelsWithKnownCodecs = [];
    MASTER_PLAYLIST_REGEX.lastIndex = 0;
    let result;
    while ((result = MASTER_PLAYLIST_REGEX.exec(string)) != null) {
      if (result[1]) {
        var _level$unknownCodecs;
        const attrs = new AttrList(result[1], parsed);
        const uri = substituteVariables(parsed, result[2]);
        const level = {
          attrs,
          bitrate: attrs.decimalInteger("BANDWIDTH") || attrs.decimalInteger("AVERAGE-BANDWIDTH"),
          name: attrs.NAME,
          url: M3U8Parser.resolve(uri, baseurl)
        };
        const resolution = attrs.decimalResolution("RESOLUTION");
        if (resolution) {
          level.width = resolution.width;
          level.height = resolution.height;
        }
        setCodecs(attrs.CODECS, level);
        const supplementalCodecs = attrs["SUPPLEMENTAL-CODECS"];
        if (supplementalCodecs) {
          level.supplemental = {};
          setCodecs(supplementalCodecs, level.supplemental);
        }
        if (!((_level$unknownCodecs = level.unknownCodecs) != null && _level$unknownCodecs.length)) {
          levelsWithKnownCodecs.push(level);
        }
        parsed.levels.push(level);
      } else if (result[3]) {
        const tag = result[3];
        const attributes = result[4];
        switch (tag) {
          case "SESSION-DATA": {
            const sessionAttrs = new AttrList(attributes, parsed);
            const dataId = sessionAttrs["DATA-ID"];
            if (dataId) {
              if (parsed.sessionData === null) {
                parsed.sessionData = {};
              }
              parsed.sessionData[dataId] = sessionAttrs;
            }
            break;
          }
          case "SESSION-KEY": {
            const sessionKey = parseKey(attributes, baseurl, parsed);
            if (sessionKey.encrypted && sessionKey.isSupported()) {
              if (parsed.sessionKeys === null) {
                parsed.sessionKeys = [];
              }
              parsed.sessionKeys.push(sessionKey);
            } else {
              logger.warn(`[Keys] Ignoring invalid EXT-X-SESSION-KEY tag: "${attributes}"`);
            }
            break;
          }
          case "DEFINE": {
            {
              const variableAttributes = new AttrList(attributes, parsed);
              addVariableDefinition(parsed, variableAttributes, baseurl);
            }
            break;
          }
          case "CONTENT-STEERING": {
            const contentSteeringAttributes = new AttrList(attributes, parsed);
            parsed.contentSteering = {
              uri: M3U8Parser.resolve(contentSteeringAttributes["SERVER-URI"], baseurl),
              pathwayId: contentSteeringAttributes["PATHWAY-ID"] || "."
            };
            break;
          }
          case "START": {
            parsed.startTimeOffset = parseStartTimeOffset(attributes);
            break;
          }
        }
      }
    }
    const stripUnknownCodecLevels = levelsWithKnownCodecs.length > 0 && levelsWithKnownCodecs.length < parsed.levels.length;
    parsed.levels = stripUnknownCodecLevels ? levelsWithKnownCodecs : parsed.levels;
    if (parsed.levels.length === 0) {
      parsed.playlistParsingError = new Error("no levels found in manifest");
    }
    return parsed;
  }
  static parseMasterPlaylistMedia(string, baseurl, parsed) {
    let result;
    const results = {};
    const levels = parsed.levels;
    const groupsByType = {
      AUDIO: levels.map((level) => ({
        id: level.attrs.AUDIO,
        audioCodec: level.audioCodec
      })),
      SUBTITLES: levels.map((level) => ({
        id: level.attrs.SUBTITLES,
        textCodec: level.textCodec
      })),
      "CLOSED-CAPTIONS": []
    };
    let id = 0;
    MASTER_PLAYLIST_MEDIA_REGEX.lastIndex = 0;
    while ((result = MASTER_PLAYLIST_MEDIA_REGEX.exec(string)) !== null) {
      const attrs = new AttrList(result[1], parsed);
      const type = attrs.TYPE;
      if (type) {
        const groups = groupsByType[type];
        const medias = results[type] || [];
        results[type] = medias;
        const lang = attrs.LANGUAGE;
        const assocLang = attrs["ASSOC-LANGUAGE"];
        const channels = attrs.CHANNELS;
        const characteristics = attrs.CHARACTERISTICS;
        const instreamId = attrs["INSTREAM-ID"];
        const media = {
          attrs,
          bitrate: 0,
          id: id++,
          groupId: attrs["GROUP-ID"] || "",
          name: attrs.NAME || lang || "",
          type,
          default: attrs.bool("DEFAULT"),
          autoselect: attrs.bool("AUTOSELECT"),
          forced: attrs.bool("FORCED"),
          lang,
          url: attrs.URI ? M3U8Parser.resolve(attrs.URI, baseurl) : ""
        };
        if (assocLang) {
          media.assocLang = assocLang;
        }
        if (channels) {
          media.channels = channels;
        }
        if (characteristics) {
          media.characteristics = characteristics;
        }
        if (instreamId) {
          media.instreamId = instreamId;
        }
        if (groups != null && groups.length) {
          const groupCodec = M3U8Parser.findGroup(groups, media.groupId) || groups[0];
          assignCodec(media, groupCodec, "audioCodec");
          assignCodec(media, groupCodec, "textCodec");
        }
        medias.push(media);
      }
    }
    return results;
  }
  static parseLevelPlaylist(string, baseurl, id, type, levelUrlId, multivariantVariableList) {
    var _LEVEL_PLAYLIST_REGEX;
    const base = {
      url: baseurl
    };
    const level = new LevelDetails(baseurl);
    const fragments = level.fragments;
    const programDateTimes = [];
    let currentInitSegment = null;
    let currentSN = 0;
    let currentPart = 0;
    let totalduration = 0;
    let discontinuityCounter = 0;
    let currentBitrate = 0;
    let prevFrag = null;
    let frag = new Fragment(type, base);
    let result;
    let i;
    let levelkeys;
    let firstPdtIndex = -1;
    let createNextFrag = false;
    let nextByteRange = null;
    let serverControlAttrs;
    LEVEL_PLAYLIST_REGEX_FAST.lastIndex = 0;
    level.m3u8 = string;
    level.hasVariableRefs = hasVariableReferences(string);
    if (((_LEVEL_PLAYLIST_REGEX = LEVEL_PLAYLIST_REGEX_FAST.exec(string)) == null ? void 0 : _LEVEL_PLAYLIST_REGEX[0]) !== "#EXTM3U") {
      level.playlistParsingError = new Error("Missing format identifier #EXTM3U");
      return level;
    }
    while ((result = LEVEL_PLAYLIST_REGEX_FAST.exec(string)) !== null) {
      if (createNextFrag) {
        createNextFrag = false;
        frag = new Fragment(type, base);
        frag.playlistOffset = totalduration;
        frag.start = totalduration;
        frag.sn = currentSN;
        frag.cc = discontinuityCounter;
        if (currentBitrate) {
          frag.bitrate = currentBitrate;
        }
        frag.level = id;
        if (currentInitSegment) {
          frag.initSegment = currentInitSegment;
          if (currentInitSegment.rawProgramDateTime) {
            frag.rawProgramDateTime = currentInitSegment.rawProgramDateTime;
            currentInitSegment.rawProgramDateTime = null;
          }
          if (nextByteRange) {
            frag.setByteRange(nextByteRange);
            nextByteRange = null;
          }
        }
      }
      const duration = result[1];
      if (duration) {
        frag.duration = parseFloat(duration);
        const title = (" " + result[2]).slice(1);
        frag.title = title || null;
        frag.tagList.push(title ? ["INF", duration, title] : ["INF", duration]);
      } else if (result[3]) {
        if (isFiniteNumber(frag.duration)) {
          frag.playlistOffset = totalduration;
          frag.start = totalduration;
          if (levelkeys) {
            setFragLevelKeys(frag, levelkeys, level);
          }
          frag.sn = currentSN;
          frag.level = id;
          frag.cc = discontinuityCounter;
          fragments.push(frag);
          const uri = (" " + result[3]).slice(1);
          frag.relurl = substituteVariables(level, uri);
          assignProgramDateTime(frag, prevFrag, programDateTimes);
          prevFrag = frag;
          totalduration += frag.duration;
          currentSN++;
          currentPart = 0;
          createNextFrag = true;
        }
      } else {
        result = result[0].match(LEVEL_PLAYLIST_REGEX_SLOW);
        if (!result) {
          logger.warn("No matches on slow regex match for level playlist!");
          continue;
        }
        for (i = 1; i < result.length; i++) {
          if (result[i] !== void 0) {
            break;
          }
        }
        const tag = (" " + result[i]).slice(1);
        const value1 = (" " + result[i + 1]).slice(1);
        const value2 = result[i + 2] ? (" " + result[i + 2]).slice(1) : null;
        switch (tag) {
          case "BYTERANGE":
            if (prevFrag) {
              frag.setByteRange(value1, prevFrag);
            } else {
              frag.setByteRange(value1);
            }
            break;
          case "PROGRAM-DATE-TIME":
            frag.rawProgramDateTime = value1;
            frag.tagList.push(["PROGRAM-DATE-TIME", value1]);
            if (firstPdtIndex === -1) {
              firstPdtIndex = fragments.length;
            }
            break;
          case "PLAYLIST-TYPE":
            if (level.type) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            level.type = value1.toUpperCase();
            break;
          case "MEDIA-SEQUENCE":
            if (level.startSN !== 0) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            } else if (fragments.length > 0) {
              assignMustAppearBeforeSegmentsError(level, tag, result);
            }
            currentSN = level.startSN = parseInt(value1);
            break;
          case "SKIP": {
            if (level.skippedSegments) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            const skipAttrs = new AttrList(value1, level);
            const skippedSegments = skipAttrs.decimalInteger("SKIPPED-SEGMENTS");
            if (isFiniteNumber(skippedSegments)) {
              level.skippedSegments += skippedSegments;
              for (let _i = skippedSegments; _i--; ) {
                fragments.push(null);
              }
              currentSN += skippedSegments;
            }
            const recentlyRemovedDateranges = skipAttrs.enumeratedString("RECENTLY-REMOVED-DATERANGES");
            if (recentlyRemovedDateranges) {
              level.recentlyRemovedDateranges = (level.recentlyRemovedDateranges || []).concat(recentlyRemovedDateranges.split("	"));
            }
            break;
          }
          case "TARGETDURATION":
            if (level.targetduration !== 0) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            level.targetduration = Math.max(parseInt(value1), 1);
            break;
          case "VERSION":
            if (level.version !== null) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            level.version = parseInt(value1);
            break;
          case "INDEPENDENT-SEGMENTS":
            break;
          case "ENDLIST":
            if (!level.live) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            level.live = false;
            break;
          case "#":
            if (value1 || value2) {
              frag.tagList.push(value2 ? [value1, value2] : [value1]);
            }
            break;
          case "DISCONTINUITY":
            discontinuityCounter++;
            frag.tagList.push(["DIS"]);
            break;
          case "GAP":
            frag.gap = true;
            frag.tagList.push([tag]);
            break;
          case "BITRATE":
            frag.tagList.push([tag, value1]);
            currentBitrate = parseInt(value1) * 1e3;
            if (isFiniteNumber(currentBitrate)) {
              frag.bitrate = currentBitrate;
            } else {
              currentBitrate = 0;
            }
            break;
          case "DATERANGE": {
            const dateRangeAttr = new AttrList(value1, level);
            const dateRange = new DateRange(dateRangeAttr, level.dateRanges[dateRangeAttr.ID], level.dateRangeTagCount);
            level.dateRangeTagCount++;
            if (dateRange.isValid || level.skippedSegments) {
              level.dateRanges[dateRange.id] = dateRange;
            } else {
              logger.warn(`Ignoring invalid DATERANGE tag: "${value1}"`);
            }
            frag.tagList.push(["EXT-X-DATERANGE", value1]);
            break;
          }
          case "DEFINE": {
            {
              const variableAttributes = new AttrList(value1, level);
              if ("IMPORT" in variableAttributes) {
                importVariableDefinition(level, variableAttributes, multivariantVariableList);
              } else {
                addVariableDefinition(level, variableAttributes, baseurl);
              }
            }
            break;
          }
          case "DISCONTINUITY-SEQUENCE":
            if (level.startCC !== 0) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            } else if (fragments.length > 0) {
              assignMustAppearBeforeSegmentsError(level, tag, result);
            }
            level.startCC = discontinuityCounter = parseInt(value1);
            break;
          case "KEY": {
            const levelKey = parseKey(value1, baseurl, level);
            if (levelKey.isSupported()) {
              if (levelKey.method === "NONE") {
                levelkeys = void 0;
                break;
              }
              if (!levelkeys) {
                levelkeys = {};
              }
              const currentKey = levelkeys[levelKey.keyFormat];
              if (!(currentKey != null && currentKey.matches(levelKey))) {
                if (currentKey) {
                  levelkeys = _extends({}, levelkeys);
                }
                levelkeys[levelKey.keyFormat] = levelKey;
              }
            } else {
              logger.warn(`[Keys] Ignoring invalid EXT-X-KEY tag: "${value1}"`);
            }
            break;
          }
          case "START":
            level.startTimeOffset = parseStartTimeOffset(value1);
            break;
          case "MAP": {
            const mapAttrs = new AttrList(value1, level);
            if (frag.duration) {
              const init = new Fragment(type, base);
              setInitSegment(init, mapAttrs, id, levelkeys);
              currentInitSegment = init;
              frag.initSegment = currentInitSegment;
              if (currentInitSegment.rawProgramDateTime && !frag.rawProgramDateTime) {
                frag.rawProgramDateTime = currentInitSegment.rawProgramDateTime;
              }
            } else {
              const end = frag.byteRangeEndOffset;
              if (end) {
                const start = frag.byteRangeStartOffset;
                nextByteRange = `${end - start}@${start}`;
              } else {
                nextByteRange = null;
              }
              setInitSegment(frag, mapAttrs, id, levelkeys);
              currentInitSegment = frag;
              createNextFrag = true;
            }
            currentInitSegment.cc = discontinuityCounter;
            break;
          }
          case "SERVER-CONTROL": {
            if (serverControlAttrs) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            serverControlAttrs = new AttrList(value1);
            level.canBlockReload = serverControlAttrs.bool("CAN-BLOCK-RELOAD");
            level.canSkipUntil = serverControlAttrs.optionalFloat("CAN-SKIP-UNTIL", 0);
            level.canSkipDateRanges = level.canSkipUntil > 0 && serverControlAttrs.bool("CAN-SKIP-DATERANGES");
            level.partHoldBack = serverControlAttrs.optionalFloat("PART-HOLD-BACK", 0);
            level.holdBack = serverControlAttrs.optionalFloat("HOLD-BACK", 0);
            break;
          }
          case "PART-INF": {
            if (level.partTarget) {
              assignMultipleMediaPlaylistTagOccuranceError(level, tag, result);
            }
            const partInfAttrs = new AttrList(value1);
            level.partTarget = partInfAttrs.decimalFloatingPoint("PART-TARGET");
            break;
          }
          case "PART": {
            let partList = level.partList;
            if (!partList) {
              partList = level.partList = [];
            }
            const previousFragmentPart = currentPart > 0 ? partList[partList.length - 1] : void 0;
            const index = currentPart++;
            const partAttrs = new AttrList(value1, level);
            const part = new Part(partAttrs, frag, base, index, previousFragmentPart);
            partList.push(part);
            frag.duration += part.duration;
            break;
          }
          case "PRELOAD-HINT": {
            const preloadHintAttrs = new AttrList(value1, level);
            level.preloadHint = preloadHintAttrs;
            break;
          }
          case "RENDITION-REPORT": {
            const renditionReportAttrs = new AttrList(value1, level);
            level.renditionReports = level.renditionReports || [];
            level.renditionReports.push(renditionReportAttrs);
            break;
          }
          default:
            logger.warn(`line parsed but not handled: ${result}`);
            break;
        }
      }
    }
    if (prevFrag && !prevFrag.relurl) {
      fragments.pop();
      totalduration -= prevFrag.duration;
      if (level.partList) {
        level.fragmentHint = prevFrag;
      }
    } else if (level.partList) {
      assignProgramDateTime(frag, prevFrag, programDateTimes);
      frag.cc = discontinuityCounter;
      level.fragmentHint = frag;
      if (levelkeys) {
        setFragLevelKeys(frag, levelkeys, level);
      }
    }
    if (!level.targetduration) {
      level.playlistParsingError = new Error(`#EXT-X-TARGETDURATION is required`);
    }
    const fragmentLength = fragments.length;
    const firstFragment = fragments[0];
    const lastFragment = fragments[fragmentLength - 1];
    totalduration += level.skippedSegments * level.targetduration;
    if (totalduration > 0 && fragmentLength && lastFragment) {
      level.averagetargetduration = totalduration / fragmentLength;
      const lastSn = lastFragment.sn;
      level.endSN = lastSn !== "initSegment" ? lastSn : 0;
      if (!level.live) {
        lastFragment.endList = true;
      }
      if (firstFragment && level.startCC === void 0) {
        level.startCC = firstFragment.cc;
      }
      if (firstPdtIndex > 0) {
        backfillProgramDateTimes(fragments, firstPdtIndex);
        if (firstFragment) {
          programDateTimes.unshift(firstFragment);
        }
      }
    } else {
      level.endSN = 0;
      level.startCC = 0;
    }
    if (level.fragmentHint) {
      totalduration += level.fragmentHint.duration;
    }
    level.totalduration = totalduration;
    if (programDateTimes.length && level.dateRangeTagCount && firstFragment) {
      mapDateRanges(programDateTimes, level);
    }
    level.endCC = discontinuityCounter;
    return level;
  }
};
function mapDateRanges(programDateTimes, details) {
  const programDateTimeCount = programDateTimes.length;
  if (!programDateTimeCount) {
    return;
  }
  const lastProgramDateTime = programDateTimes[programDateTimeCount - 1];
  const playlistEnd = details.live ? Infinity : details.totalduration;
  const dateRangeIds = Object.keys(details.dateRanges);
  for (let i = dateRangeIds.length; i--; ) {
    const dateRange = details.dateRanges[dateRangeIds[i]];
    const startDateTime = dateRange.startDate.getTime();
    dateRange.tagAnchor = lastProgramDateTime.ref;
    for (let j = programDateTimeCount; j--; ) {
      const fragIndex = findFragmentWithStartDate(details, startDateTime, programDateTimes, j, playlistEnd);
      if (fragIndex !== -1) {
        dateRange.tagAnchor = details.fragments[fragIndex].ref;
        break;
      }
    }
  }
}
function findFragmentWithStartDate(details, startDateTime, programDateTimes, index, endTime) {
  const pdtFragment = programDateTimes[index];
  if (pdtFragment) {
    const pdtStart = pdtFragment.programDateTime;
    if (startDateTime >= pdtStart || index === 0) {
      var _programDateTimes;
      const durationBetweenPdt = (((_programDateTimes = programDateTimes[index + 1]) == null ? void 0 : _programDateTimes.start) || endTime) - pdtFragment.start;
      if (startDateTime <= pdtStart + durationBetweenPdt * 1e3) {
        const startIndex = programDateTimes[index].sn - details.startSN;
        const fragments = details.fragments;
        if (fragments.length > programDateTimes.length) {
          const endSegment = programDateTimes[index + 1] || fragments[fragments.length - 1];
          const endIndex = endSegment.sn - details.startSN;
          for (let i = endIndex; i > startIndex; i--) {
            const fragStartDateTime = fragments[i].programDateTime;
            if (startDateTime >= fragStartDateTime && startDateTime < fragStartDateTime + fragments[i].duration * 1e3) {
              return i;
            }
          }
        }
        return startIndex;
      }
    }
  }
  return -1;
}
function parseKey(keyTagAttributes, baseurl, parsed) {
  var _keyAttrs$METHOD, _keyAttrs$KEYFORMAT;
  const keyAttrs = new AttrList(keyTagAttributes, parsed);
  const decryptmethod = (_keyAttrs$METHOD = keyAttrs.METHOD) != null ? _keyAttrs$METHOD : "";
  const decrypturi = keyAttrs.URI;
  const decryptiv = keyAttrs.hexadecimalInteger("IV");
  const decryptkeyformatversions = keyAttrs.KEYFORMATVERSIONS;
  const decryptkeyformat = (_keyAttrs$KEYFORMAT = keyAttrs.KEYFORMAT) != null ? _keyAttrs$KEYFORMAT : "identity";
  if (decrypturi && keyAttrs.IV && !decryptiv) {
    logger.error(`Invalid IV: ${keyAttrs.IV}`);
  }
  const resolvedUri = decrypturi ? M3U8Parser.resolve(decrypturi, baseurl) : "";
  const keyFormatVersions = (decryptkeyformatversions ? decryptkeyformatversions : "1").split("/").map(Number).filter(Number.isFinite);
  return new LevelKey(decryptmethod, resolvedUri, decryptkeyformat, keyFormatVersions, decryptiv, keyAttrs.KEYID);
}
function parseStartTimeOffset(startAttributes) {
  const startAttrs = new AttrList(startAttributes);
  const startTimeOffset = startAttrs.decimalFloatingPoint("TIME-OFFSET");
  if (isFiniteNumber(startTimeOffset)) {
    return startTimeOffset;
  }
  return null;
}
function setCodecs(codecsAttributeValue, level) {
  let codecs = (codecsAttributeValue || "").split(/[ ,]+/).filter((c) => c);
  ["video", "audio", "text"].forEach((type) => {
    const filtered = codecs.filter((codec) => isCodecType(codec, type));
    if (filtered.length) {
      level[`${type}Codec`] = filtered.map((c) => c.split("/")[0]).join(",");
      codecs = codecs.filter((codec) => filtered.indexOf(codec) === -1);
    }
  });
  level.unknownCodecs = codecs;
}
function assignCodec(media, groupItem, codecProperty) {
  const codecValue = groupItem[codecProperty];
  if (codecValue) {
    media[codecProperty] = codecValue;
  }
}
function backfillProgramDateTimes(fragments, firstPdtIndex) {
  let fragPrev = fragments[firstPdtIndex];
  for (let i = firstPdtIndex; i--; ) {
    const frag = fragments[i];
    if (!frag) {
      return;
    }
    frag.programDateTime = fragPrev.programDateTime - frag.duration * 1e3;
    fragPrev = frag;
  }
}
function assignProgramDateTime(frag, prevFrag, programDateTimes) {
  if (frag.rawProgramDateTime) {
    programDateTimes.push(frag);
  } else if (prevFrag != null && prevFrag.programDateTime) {
    frag.programDateTime = prevFrag.endProgramDateTime;
  }
}
function setInitSegment(frag, mapAttrs, id, levelkeys) {
  frag.relurl = mapAttrs.URI;
  if (mapAttrs.BYTERANGE) {
    frag.setByteRange(mapAttrs.BYTERANGE);
  }
  frag.level = id;
  frag.sn = "initSegment";
  if (levelkeys) {
    frag.levelkeys = levelkeys;
  }
  frag.initSegment = null;
}
function setFragLevelKeys(frag, levelkeys, level) {
  frag.levelkeys = levelkeys;
  const {
    encryptedFragments
  } = level;
  if ((!encryptedFragments.length || encryptedFragments[encryptedFragments.length - 1].levelkeys !== levelkeys) && Object.keys(levelkeys).some((format2) => levelkeys[format2].isCommonEncryption)) {
    encryptedFragments.push(frag);
  }
}
function assignMultipleMediaPlaylistTagOccuranceError(level, tag, result) {
  level.playlistParsingError = new Error(`#EXT-X-${tag} must not appear more than once (${result[0]})`);
}
function assignMustAppearBeforeSegmentsError(level, tag, result) {
  level.playlistParsingError = new Error(`#EXT-X-${tag} must appear before the first Media Segment (${result[0]})`);
}
function updateFromToPTS(fragFrom, fragTo) {
  const fragToPTS = fragTo.startPTS;
  if (isFiniteNumber(fragToPTS)) {
    let duration = 0;
    let frag;
    if (fragTo.sn > fragFrom.sn) {
      duration = fragToPTS - fragFrom.start;
      frag = fragFrom;
    } else {
      duration = fragFrom.start - fragToPTS;
      frag = fragTo;
    }
    if (frag.duration !== duration) {
      frag.setDuration(duration);
    }
  } else if (fragTo.sn > fragFrom.sn) {
    const contiguous = fragFrom.cc === fragTo.cc;
    if (contiguous && fragFrom.minEndPTS) {
      fragTo.setStart(fragFrom.start + (fragFrom.minEndPTS - fragFrom.start));
    } else {
      fragTo.setStart(fragFrom.start + fragFrom.duration);
    }
  } else {
    fragTo.setStart(Math.max(fragFrom.start - fragTo.duration, 0));
  }
}
function updateFragPTSDTS(details, frag, startPTS, endPTS, startDTS, endDTS) {
  const parsedMediaDuration = endPTS - startPTS;
  if (parsedMediaDuration <= 0) {
    logger.warn("Fragment should have a positive duration", frag);
    endPTS = startPTS + frag.duration;
    endDTS = startDTS + frag.duration;
  }
  let maxStartPTS = startPTS;
  let minEndPTS = endPTS;
  const fragStartPts = frag.startPTS;
  const fragEndPts = frag.endPTS;
  if (isFiniteNumber(fragStartPts)) {
    const deltaPTS = Math.abs(fragStartPts - startPTS);
    if (!isFiniteNumber(frag.deltaPTS)) {
      frag.deltaPTS = deltaPTS;
    } else {
      frag.deltaPTS = Math.max(deltaPTS, frag.deltaPTS);
    }
    maxStartPTS = Math.max(startPTS, fragStartPts);
    startPTS = Math.min(startPTS, fragStartPts);
    startDTS = Math.min(startDTS, frag.startDTS);
    minEndPTS = Math.min(endPTS, fragEndPts);
    endPTS = Math.max(endPTS, fragEndPts);
    endDTS = Math.max(endDTS, frag.endDTS);
  }
  const drift = startPTS - frag.start;
  if (frag.start !== 0) {
    frag.setStart(startPTS);
  }
  frag.setDuration(endPTS - frag.start);
  frag.startPTS = startPTS;
  frag.maxStartPTS = maxStartPTS;
  frag.startDTS = startDTS;
  frag.endPTS = endPTS;
  frag.minEndPTS = minEndPTS;
  frag.endDTS = endDTS;
  const sn = frag.sn;
  if (!details || sn < details.startSN || sn > details.endSN) {
    return 0;
  }
  let i;
  const fragIdx = sn - details.startSN;
  const fragments = details.fragments;
  fragments[fragIdx] = frag;
  for (i = fragIdx; i > 0; i--) {
    updateFromToPTS(fragments[i], fragments[i - 1]);
  }
  for (i = fragIdx; i < fragments.length - 1; i++) {
    updateFromToPTS(fragments[i], fragments[i + 1]);
  }
  if (details.fragmentHint) {
    updateFromToPTS(fragments[fragments.length - 1], details.fragmentHint);
  }
  details.PTSKnown = details.alignedSliding = true;
  return drift;
}
function mergeDetails(oldDetails, newDetails) {
  if (oldDetails === newDetails) {
    return;
  }
  let currentInitSegment = null;
  const oldFragments = oldDetails.fragments;
  for (let i = oldFragments.length - 1; i >= 0; i--) {
    const oldInit = oldFragments[i].initSegment;
    if (oldInit) {
      currentInitSegment = oldInit;
      break;
    }
  }
  if (oldDetails.fragmentHint) {
    delete oldDetails.fragmentHint.endPTS;
  }
  let PTSFrag;
  mapFragmentIntersection(oldDetails, newDetails, (oldFrag, newFrag, newFragIndex, newFragments2) => {
    if ((!newDetails.startCC || newDetails.skippedSegments) && newFrag.cc !== oldFrag.cc) {
      const ccOffset = oldFrag.cc - newFrag.cc;
      for (let i = newFragIndex; i < newFragments2.length; i++) {
        newFragments2[i].cc += ccOffset;
      }
      newDetails.endCC = newFragments2[newFragments2.length - 1].cc;
    }
    if (isFiniteNumber(oldFrag.startPTS) && isFiniteNumber(oldFrag.endPTS)) {
      newFrag.setStart(newFrag.startPTS = oldFrag.startPTS);
      newFrag.startDTS = oldFrag.startDTS;
      newFrag.maxStartPTS = oldFrag.maxStartPTS;
      newFrag.endPTS = oldFrag.endPTS;
      newFrag.endDTS = oldFrag.endDTS;
      newFrag.minEndPTS = oldFrag.minEndPTS;
      newFrag.setDuration(oldFrag.endPTS - oldFrag.startPTS);
      if (newFrag.duration) {
        PTSFrag = newFrag;
      }
      newDetails.PTSKnown = newDetails.alignedSliding = true;
    }
    if (oldFrag.hasStreams) {
      newFrag.elementaryStreams = oldFrag.elementaryStreams;
    }
    newFrag.loader = oldFrag.loader;
    if (oldFrag.hasStats) {
      newFrag.stats = oldFrag.stats;
    }
    if (oldFrag.initSegment) {
      newFrag.initSegment = oldFrag.initSegment;
      currentInitSegment = oldFrag.initSegment;
    }
  });
  const newFragments = newDetails.fragments;
  const fragmentsToCheck = newDetails.fragmentHint ? newFragments.concat(newDetails.fragmentHint) : newFragments;
  if (currentInitSegment) {
    fragmentsToCheck.forEach((frag) => {
      var _currentInitSegment;
      if (frag && (!frag.initSegment || frag.initSegment.relurl === ((_currentInitSegment = currentInitSegment) == null ? void 0 : _currentInitSegment.relurl))) {
        frag.initSegment = currentInitSegment;
      }
    });
  }
  if (newDetails.skippedSegments) {
    newDetails.deltaUpdateFailed = newFragments.some((frag) => !frag);
    if (newDetails.deltaUpdateFailed) {
      logger.warn("[level-helper] Previous playlist missing segments skipped in delta playlist");
      for (let i = newDetails.skippedSegments; i--; ) {
        newFragments.shift();
      }
      newDetails.startSN = newFragments[0].sn;
    } else {
      if (newDetails.canSkipDateRanges) {
        newDetails.dateRanges = mergeDateRanges(oldDetails.dateRanges, newDetails);
      }
      const programDateTimes = oldDetails.fragments.filter((frag) => frag.rawProgramDateTime);
      if (oldDetails.hasProgramDateTime && !newDetails.hasProgramDateTime) {
        for (let i = 1; i < fragmentsToCheck.length; i++) {
          if (fragmentsToCheck[i].programDateTime === null) {
            assignProgramDateTime(fragmentsToCheck[i], fragmentsToCheck[i - 1], programDateTimes);
          }
        }
      }
      mapDateRanges(programDateTimes, newDetails);
    }
    newDetails.endCC = newFragments[newFragments.length - 1].cc;
  }
  if (!newDetails.startCC) {
    var _fragPriorToNewStart$;
    const fragPriorToNewStart = getFragmentWithSN(oldDetails, newDetails.startSN - 1);
    newDetails.startCC = (_fragPriorToNewStart$ = fragPriorToNewStart == null ? void 0 : fragPriorToNewStart.cc) != null ? _fragPriorToNewStart$ : newFragments[0].cc;
  }
  mapPartIntersection(oldDetails.partList, newDetails.partList, (oldPart, newPart) => {
    newPart.elementaryStreams = oldPart.elementaryStreams;
    newPart.stats = oldPart.stats;
  });
  if (PTSFrag) {
    updateFragPTSDTS(newDetails, PTSFrag, PTSFrag.startPTS, PTSFrag.endPTS, PTSFrag.startDTS, PTSFrag.endDTS);
  } else {
    adjustSliding(oldDetails, newDetails);
  }
  if (newFragments.length) {
    newDetails.totalduration = newDetails.edge - newFragments[0].start;
  }
  newDetails.driftStartTime = oldDetails.driftStartTime;
  newDetails.driftStart = oldDetails.driftStart;
  const advancedDateTime = newDetails.advancedDateTime;
  if (newDetails.advanced && advancedDateTime) {
    const edge = newDetails.edge;
    if (!newDetails.driftStart) {
      newDetails.driftStartTime = advancedDateTime;
      newDetails.driftStart = edge;
    }
    newDetails.driftEndTime = advancedDateTime;
    newDetails.driftEnd = edge;
  } else {
    newDetails.driftEndTime = oldDetails.driftEndTime;
    newDetails.driftEnd = oldDetails.driftEnd;
    newDetails.advancedDateTime = oldDetails.advancedDateTime;
  }
  if (newDetails.requestScheduled === -1) {
    newDetails.requestScheduled = oldDetails.requestScheduled;
  }
}
function mergeDateRanges(oldDateRanges, newDetails) {
  const {
    dateRanges: deltaDateRanges,
    recentlyRemovedDateranges
  } = newDetails;
  const dateRanges = _extends({}, oldDateRanges);
  if (recentlyRemovedDateranges) {
    recentlyRemovedDateranges.forEach((id) => {
      delete dateRanges[id];
    });
  }
  const mergeIds = Object.keys(dateRanges);
  const mergeCount = mergeIds.length;
  if (mergeCount) {
    Object.keys(deltaDateRanges).forEach((id) => {
      const mergedDateRange = dateRanges[id];
      const dateRange = new DateRange(deltaDateRanges[id].attr, mergedDateRange);
      if (dateRange.isValid) {
        dateRanges[id] = dateRange;
        if (!mergedDateRange) {
          dateRange.tagOrder += mergeCount;
        }
      } else {
        logger.warn(`Ignoring invalid Playlist Delta Update DATERANGE tag: "${stringify(deltaDateRanges[id].attr)}"`);
      }
    });
  }
  return dateRanges;
}
function mapPartIntersection(oldParts, newParts, intersectionFn) {
  if (oldParts && newParts) {
    let delta = 0;
    for (let i = 0, len = oldParts.length; i <= len; i++) {
      const oldPart = oldParts[i];
      const newPart = newParts[i + delta];
      if (oldPart && newPart && oldPart.index === newPart.index && oldPart.fragment.sn === newPart.fragment.sn) {
        intersectionFn(oldPart, newPart);
      } else {
        delta--;
      }
    }
  }
}
function mapFragmentIntersection(oldDetails, newDetails, intersectionFn) {
  const skippedSegments = newDetails.skippedSegments;
  const start = Math.max(oldDetails.startSN, newDetails.startSN) - newDetails.startSN;
  const end = (oldDetails.fragmentHint ? 1 : 0) + (skippedSegments ? newDetails.endSN : Math.min(oldDetails.endSN, newDetails.endSN)) - newDetails.startSN;
  const delta = newDetails.startSN - oldDetails.startSN;
  const newFrags = newDetails.fragmentHint ? newDetails.fragments.concat(newDetails.fragmentHint) : newDetails.fragments;
  const oldFrags = oldDetails.fragmentHint ? oldDetails.fragments.concat(oldDetails.fragmentHint) : oldDetails.fragments;
  for (let i = start; i <= end; i++) {
    const oldFrag = oldFrags[delta + i];
    let newFrag = newFrags[i];
    if (skippedSegments && !newFrag && oldFrag) {
      newFrag = newDetails.fragments[i] = oldFrag;
    }
    if (oldFrag && newFrag) {
      intersectionFn(oldFrag, newFrag, i, newFrags);
      if (oldFrag.url && oldFrag.url !== newFrag.url) {
        newDetails.playlistParsingError = getSequenceError(`media sequence mismatch ${newFrag.sn}:`, oldDetails, newDetails, oldFrag, newFrag);
        return;
      } else if (oldFrag.cc !== newFrag.cc) {
        newDetails.playlistParsingError = getSequenceError(`discontinuity sequence mismatch (${oldFrag.cc}!=${newFrag.cc})`, oldDetails, newDetails, oldFrag, newFrag);
        return;
      }
    }
  }
}
function getSequenceError(message, oldDetails, newDetails, oldFrag, newFrag) {
  return new Error(`${message} ${newFrag.url}
Playlist starting @${oldDetails.startSN}
${oldDetails.m3u8}

Playlist starting @${newDetails.startSN}
${newDetails.m3u8}`);
}
function adjustSliding(oldDetails, newDetails, matchingStableVariantOrRendition = true) {
  const delta = newDetails.startSN + newDetails.skippedSegments - oldDetails.startSN;
  const oldFragments = oldDetails.fragments;
  const advancedOrStable = delta >= 0;
  let sliding = 0;
  if (advancedOrStable && delta < oldFragments.length) {
    sliding = oldFragments[delta].start;
  } else if (advancedOrStable && newDetails.startSN === oldDetails.endSN + 1) {
    sliding = oldDetails.fragmentEnd;
  } else if (advancedOrStable && matchingStableVariantOrRendition) {
    sliding = oldDetails.fragmentStart + delta * newDetails.levelTargetDuration;
  } else if (!newDetails.skippedSegments && newDetails.fragmentStart === 0) {
    sliding = oldDetails.fragmentStart;
  } else {
    return;
  }
  addSliding(newDetails, sliding);
}
function addSliding(details, sliding) {
  if (sliding) {
    const fragments = details.fragments;
    for (let i = details.skippedSegments; i < fragments.length; i++) {
      fragments[i].addStart(sliding);
    }
    if (details.fragmentHint) {
      details.fragmentHint.addStart(sliding);
    }
  }
}
function computeReloadInterval(newDetails, distanceToLiveEdgeMs = Infinity) {
  let reloadInterval = 1e3 * newDetails.targetduration;
  if (newDetails.updated) {
    const fragments = newDetails.fragments;
    const liveEdgeMaxTargetDurations = 4;
    if (fragments.length && reloadInterval * liveEdgeMaxTargetDurations > distanceToLiveEdgeMs) {
      const lastSegmentDuration = fragments[fragments.length - 1].duration * 1e3;
      if (lastSegmentDuration < reloadInterval) {
        reloadInterval = lastSegmentDuration;
      }
    }
  } else {
    reloadInterval /= 2;
  }
  return Math.round(reloadInterval);
}
function getFragmentWithSN(details, sn, fragCurrent) {
  if (!details) {
    return null;
  }
  let fragment = details.fragments[sn - details.startSN];
  if (fragment) {
    return fragment;
  }
  fragment = details.fragmentHint;
  if (fragment && fragment.sn === sn) {
    return fragment;
  }
  if (sn < details.startSN && fragCurrent && fragCurrent.sn === sn) {
    return fragCurrent;
  }
  return null;
}
function getPartWith(details, sn, partIndex) {
  if (!details) {
    return null;
  }
  return findPart(details.partList, sn, partIndex);
}
function findPart(partList, sn, partIndex) {
  if (partList) {
    for (let i = partList.length; i--; ) {
      const part = partList[i];
      if (part.index === partIndex && part.fragment.sn === sn) {
        return part;
      }
    }
  }
  return null;
}
function reassignFragmentLevelIndexes(levels) {
  levels.forEach((level, index) => {
    var _level$details;
    (_level$details = level.details) == null ? void 0 : _level$details.fragments.forEach((fragment) => {
      fragment.level = index;
      if (fragment.initSegment) {
        fragment.initSegment.level = index;
      }
    });
  });
}
function findFirstFragWithCC(fragments, cc) {
  for (let i = 0, len = fragments.length; i < len; i++) {
    var _fragments$i;
    if (((_fragments$i = fragments[i]) == null ? void 0 : _fragments$i.cc) === cc) {
      return fragments[i];
    }
  }
  return null;
}
function shouldAlignOnDiscontinuities(refDetails, details) {
  if (refDetails) {
    if (details.startCC < refDetails.endCC && details.endCC > refDetails.startCC) {
      return true;
    }
  }
  return false;
}
function adjustFragmentStart(frag, sliding) {
  if (frag) {
    const start = frag.start + sliding;
    frag.start = frag.startPTS = start;
    frag.endPTS = start + frag.duration;
  }
}
function adjustSlidingStart(sliding, details) {
  const fragments = details.fragments;
  for (let i = 0, len = fragments.length; i < len; i++) {
    adjustFragmentStart(fragments[i], sliding);
  }
  if (details.fragmentHint) {
    adjustFragmentStart(details.fragmentHint, sliding);
  }
  details.alignedSliding = true;
}
function alignStream(switchDetails, details) {
  if (!switchDetails) {
    return;
  }
  alignDiscontinuities(details, switchDetails);
  if (!details.alignedSliding && switchDetails) {
    alignMediaPlaylistByPDT(details, switchDetails);
  }
  if (!details.alignedSliding && switchDetails && !details.skippedSegments) {
    adjustSliding(switchDetails, details, false);
  }
}
function alignDiscontinuities(details, refDetails) {
  if (!shouldAlignOnDiscontinuities(refDetails, details)) {
    return;
  }
  const targetCC = Math.min(refDetails.endCC, details.endCC);
  const refFrag = findFirstFragWithCC(refDetails.fragments, targetCC);
  const frag = findFirstFragWithCC(details.fragments, targetCC);
  if (!refFrag || !frag) {
    return;
  }
  logger.log(`Aligning playlist at start of dicontinuity sequence ${targetCC}`);
  const delta = refFrag.start - frag.start;
  adjustSlidingStart(delta, details);
}
function alignMediaPlaylistByPDT(details, refDetails) {
  if (!details.hasProgramDateTime || !refDetails.hasProgramDateTime) {
    return;
  }
  const fragments = details.fragments;
  const refFragments = refDetails.fragments;
  if (!fragments.length || !refFragments.length) {
    return;
  }
  let refFrag;
  let frag;
  const targetCC = Math.min(refDetails.endCC, details.endCC);
  if (refDetails.startCC < targetCC && details.startCC < targetCC) {
    refFrag = findFirstFragWithCC(refFragments, targetCC);
    frag = findFirstFragWithCC(fragments, targetCC);
  }
  if (!refFrag || !frag) {
    refFrag = refFragments[Math.floor(refFragments.length / 2)];
    frag = findFirstFragWithCC(fragments, refFrag.cc) || fragments[Math.floor(fragments.length / 2)];
  }
  const refPDT = refFrag.programDateTime;
  const targetPDT = frag.programDateTime;
  if (!refPDT || !targetPDT) {
    return;
  }
  const delta = (targetPDT - refPDT) / 1e3 - (frag.start - refFrag.start);
  adjustSlidingStart(delta, details);
}
var TimeRanges = {
  toString: function(r) {
    let log = "";
    const len = r.length;
    for (let i = 0; i < len; i++) {
      log += `[${r.start(i).toFixed(3)}-${r.end(i).toFixed(3)}]`;
    }
    return log;
  }
};
var State = {
  STOPPED: "STOPPED",
  IDLE: "IDLE",
  KEY_LOADING: "KEY_LOADING",
  FRAG_LOADING: "FRAG_LOADING",
  FRAG_LOADING_WAITING_RETRY: "FRAG_LOADING_WAITING_RETRY",
  WAITING_TRACK: "WAITING_TRACK",
  PARSING: "PARSING",
  PARSED: "PARSED",
  ENDED: "ENDED",
  ERROR: "ERROR",
  WAITING_INIT_PTS: "WAITING_INIT_PTS",
  WAITING_LEVEL: "WAITING_LEVEL"
};
var BaseStreamController = class extends TaskLoop {
  constructor(hls, fragmentTracker, keyLoader, logPrefix, playlistType) {
    super(logPrefix, hls.logger);
    this.hls = void 0;
    this.fragPrevious = null;
    this.fragCurrent = null;
    this.fragmentTracker = void 0;
    this.transmuxer = null;
    this._state = State.STOPPED;
    this.playlistType = void 0;
    this.media = null;
    this.mediaBuffer = null;
    this.config = void 0;
    this.bitrateTest = false;
    this.lastCurrentTime = 0;
    this.nextLoadPosition = 0;
    this.startPosition = 0;
    this.startTimeOffset = null;
    this.retryDate = 0;
    this.levels = null;
    this.fragmentLoader = void 0;
    this.keyLoader = void 0;
    this.levelLastLoaded = null;
    this.startFragRequested = false;
    this.decrypter = void 0;
    this.initPTS = [];
    this.buffering = true;
    this.loadingParts = false;
    this.loopSn = void 0;
    this.onMediaSeeking = () => {
      const {
        config,
        fragCurrent,
        media,
        mediaBuffer,
        state
      } = this;
      const currentTime = media ? media.currentTime : 0;
      const bufferInfo = BufferHelper.bufferInfo(mediaBuffer ? mediaBuffer : media, currentTime, config.maxBufferHole);
      const noFowardBuffer = !bufferInfo.len;
      this.log(`Media seeking to ${isFiniteNumber(currentTime) ? currentTime.toFixed(3) : currentTime}, state: ${state}, ${noFowardBuffer ? "out of" : "in"} buffer`);
      if (this.state === State.ENDED) {
        this.resetLoadingState();
      } else if (fragCurrent) {
        const tolerance = config.maxFragLookUpTolerance;
        const fragStartOffset = fragCurrent.start - tolerance;
        const fragEndOffset = fragCurrent.start + fragCurrent.duration + tolerance;
        if (noFowardBuffer || fragEndOffset < bufferInfo.start || fragStartOffset > bufferInfo.end) {
          const pastFragment = currentTime > fragEndOffset;
          if (currentTime < fragStartOffset || pastFragment) {
            if (pastFragment && fragCurrent.loader) {
              this.log(`Cancelling fragment load for seek (sn: ${fragCurrent.sn})`);
              fragCurrent.abortRequests();
              this.resetLoadingState();
            }
            this.fragPrevious = null;
          }
        }
      }
      if (media) {
        this.fragmentTracker.removeFragmentsInRange(currentTime, Infinity, this.playlistType, true);
        const lastCurrentTime = this.lastCurrentTime;
        if (currentTime > lastCurrentTime) {
          this.lastCurrentTime = currentTime;
        }
        if (!this.loadingParts) {
          const bufferEnd = Math.max(bufferInfo.end, currentTime);
          const shouldLoadParts = this.shouldLoadParts(this.getLevelDetails(), bufferEnd);
          if (shouldLoadParts) {
            this.log(`LL-Part loading ON after seeking to ${currentTime.toFixed(2)} with buffer @${bufferEnd.toFixed(2)}`);
            this.loadingParts = shouldLoadParts;
          }
        }
      }
      if (!this.hls.hasEnoughToStart) {
        this.log(`Setting ${noFowardBuffer ? "startPosition" : "nextLoadPosition"} to ${currentTime} for seek without enough to start`);
        this.nextLoadPosition = currentTime;
        if (noFowardBuffer) {
          this.startPosition = currentTime;
        }
      }
      this.tickImmediate();
    };
    this.onMediaEnded = () => {
      this.log(`setting startPosition to 0 because media ended`);
      this.startPosition = this.lastCurrentTime = 0;
    };
    this.playlistType = playlistType;
    this.hls = hls;
    this.fragmentLoader = new FragmentLoader(hls.config);
    this.keyLoader = keyLoader;
    this.fragmentTracker = fragmentTracker;
    this.config = hls.config;
    this.decrypter = new Decrypter(hls.config);
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  doTick() {
    this.onTickEnd();
  }
  onTickEnd() {
  }
  startLoad(startPosition) {
  }
  stopLoad() {
    if (this.state === State.STOPPED) {
      return;
    }
    this.fragmentLoader.abort();
    this.keyLoader.abort(this.playlistType);
    const frag = this.fragCurrent;
    if (frag != null && frag.loader) {
      frag.abortRequests();
      this.fragmentTracker.removeFragment(frag);
    }
    this.resetTransmuxer();
    this.fragCurrent = null;
    this.fragPrevious = null;
    this.clearInterval();
    this.clearNextTick();
    this.state = State.STOPPED;
  }
  get startPositionValue() {
    const {
      nextLoadPosition,
      startPosition
    } = this;
    if (startPosition === -1 && nextLoadPosition) {
      return nextLoadPosition;
    }
    return startPosition;
  }
  get bufferingEnabled() {
    return this.buffering;
  }
  pauseBuffering() {
    this.buffering = false;
  }
  resumeBuffering() {
    this.buffering = true;
  }
  get inFlightFrag() {
    return {
      frag: this.fragCurrent,
      state: this.state
    };
  }
  _streamEnded(bufferInfo, levelDetails) {
    if (levelDetails.live || !this.media) {
      return false;
    }
    const bufferEnd = bufferInfo.end || 0;
    const timelineStart = this.config.timelineOffset || 0;
    if (bufferEnd <= timelineStart) {
      return false;
    }
    const bufferedRanges = bufferInfo.buffered;
    if (this.config.maxBufferHole && bufferedRanges && bufferedRanges.length > 1) {
      bufferInfo = BufferHelper.bufferedInfo(bufferedRanges, bufferInfo.start, 0);
    }
    const nextStart = bufferInfo.nextStart;
    const hasSecondBufferedRange = nextStart && nextStart > timelineStart && nextStart < levelDetails.edge;
    if (hasSecondBufferedRange) {
      return false;
    }
    if (this.media.currentTime < bufferInfo.start) {
      return false;
    }
    const partList = levelDetails.partList;
    if (partList != null && partList.length) {
      const lastPart = partList[partList.length - 1];
      const lastPartBuffered = BufferHelper.isBuffered(this.media, lastPart.start + lastPart.duration / 2);
      return lastPartBuffered;
    }
    const playlistType = levelDetails.fragments[levelDetails.fragments.length - 1].type;
    return this.fragmentTracker.isEndListAppended(playlistType);
  }
  getLevelDetails() {
    if (this.levels && this.levelLastLoaded !== null) {
      var _this$levelLastLoaded;
      return (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details;
    }
  }
  get timelineOffset() {
    const configuredTimelineOffset = this.config.timelineOffset;
    if (configuredTimelineOffset) {
      var _this$getLevelDetails;
      return ((_this$getLevelDetails = this.getLevelDetails()) == null ? void 0 : _this$getLevelDetails.appliedTimelineOffset) || configuredTimelineOffset;
    }
    return 0;
  }
  onMediaAttached(event, data) {
    const media = this.media = this.mediaBuffer = data.media;
    media.removeEventListener("seeking", this.onMediaSeeking);
    media.removeEventListener("ended", this.onMediaEnded);
    media.addEventListener("seeking", this.onMediaSeeking);
    media.addEventListener("ended", this.onMediaEnded);
    const config = this.config;
    if (this.levels && config.autoStartLoad && this.state === State.STOPPED) {
      this.startLoad(config.startPosition);
    }
  }
  onMediaDetaching(event, data) {
    const transferringMedia = !!data.transferMedia;
    const media = this.media;
    if (media === null) {
      return;
    }
    if (media.ended) {
      this.log("MSE detaching and video ended, reset startPosition");
      this.startPosition = this.lastCurrentTime = 0;
    }
    media.removeEventListener("seeking", this.onMediaSeeking);
    media.removeEventListener("ended", this.onMediaEnded);
    if (this.keyLoader && !transferringMedia) {
      this.keyLoader.detach();
    }
    this.media = this.mediaBuffer = null;
    this.loopSn = void 0;
    if (transferringMedia) {
      this.resetLoadingState();
      this.resetTransmuxer();
      return;
    }
    this.loadingParts = false;
    this.fragmentTracker.removeAllFragments();
    this.stopLoad();
  }
  onManifestLoading() {
    this.initPTS = [];
    this.levels = this.levelLastLoaded = this.fragCurrent = null;
    this.lastCurrentTime = this.startPosition = 0;
    this.startFragRequested = false;
  }
  onError(event, data) {
  }
  onManifestLoaded(event, data) {
    this.startTimeOffset = data.startTimeOffset;
  }
  onHandlerDestroying() {
    this.stopLoad();
    if (this.transmuxer) {
      this.transmuxer.destroy();
      this.transmuxer = null;
    }
    super.onHandlerDestroying();
    this.hls = this.onMediaSeeking = this.onMediaEnded = null;
  }
  onHandlerDestroyed() {
    this.state = State.STOPPED;
    if (this.fragmentLoader) {
      this.fragmentLoader.destroy();
    }
    if (this.keyLoader) {
      this.keyLoader.destroy();
    }
    if (this.decrypter) {
      this.decrypter.destroy();
    }
    this.hls = this.log = this.warn = this.decrypter = this.keyLoader = this.fragmentLoader = this.fragmentTracker = null;
    super.onHandlerDestroyed();
  }
  loadFragment(frag, level, targetBufferTime) {
    this.startFragRequested = true;
    this._loadFragForPlayback(frag, level, targetBufferTime);
  }
  _loadFragForPlayback(fragment, level, targetBufferTime) {
    const progressCallback = (data) => {
      const frag = data.frag;
      if (this.fragContextChanged(frag)) {
        this.warn(`${frag.type} sn: ${frag.sn}${data.part ? " part: " + data.part.index : ""} of ${this.fragInfo(frag, false, data.part)}) was dropped during download.`);
        this.fragmentTracker.removeFragment(frag);
        return;
      }
      frag.stats.chunkCount++;
      this._handleFragmentLoadProgress(data);
    };
    this._doFragLoad(fragment, level, targetBufferTime, progressCallback).then((data) => {
      if (!data) {
        return;
      }
      const state = this.state;
      const frag = data.frag;
      if (this.fragContextChanged(frag)) {
        if (state === State.FRAG_LOADING || !this.fragCurrent && state === State.PARSING) {
          this.fragmentTracker.removeFragment(frag);
          this.state = State.IDLE;
        }
        return;
      }
      if ("payload" in data) {
        this.log(`Loaded ${frag.type} sn: ${frag.sn} of ${this.playlistLabel()} ${frag.level}`);
        this.hls.trigger(Events.FRAG_LOADED, data);
      }
      this._handleFragmentLoadComplete(data);
    }).catch((reason) => {
      if (this.state === State.STOPPED || this.state === State.ERROR) {
        return;
      }
      this.warn(`Frag error: ${(reason == null ? void 0 : reason.message) || reason}`);
      this.resetFragmentLoading(fragment);
    });
  }
  clearTrackerIfNeeded(frag) {
    var _this$mediaBuffer;
    const {
      fragmentTracker
    } = this;
    const fragState = fragmentTracker.getState(frag);
    if (fragState === FragmentState.APPENDING) {
      const playlistType = frag.type;
      const bufferedInfo = this.getFwdBufferInfo(this.mediaBuffer, playlistType);
      const minForwardBufferLength = Math.max(frag.duration, bufferedInfo ? bufferedInfo.len : this.config.maxBufferLength);
      const backtrackFragment = this.backtrackFragment;
      const backtracked = backtrackFragment ? frag.sn - backtrackFragment.sn : 0;
      if (backtracked === 1 || this.reduceMaxBufferLength(minForwardBufferLength, frag.duration)) {
        fragmentTracker.removeFragment(frag);
      }
    } else if (((_this$mediaBuffer = this.mediaBuffer) == null ? void 0 : _this$mediaBuffer.buffered.length) === 0) {
      fragmentTracker.removeAllFragments();
    } else if (fragmentTracker.hasParts(frag.type)) {
      fragmentTracker.detectPartialFragments({
        frag,
        part: null,
        stats: frag.stats,
        id: frag.type
      });
      if (fragmentTracker.getState(frag) === FragmentState.PARTIAL) {
        fragmentTracker.removeFragment(frag);
      }
    }
  }
  checkLiveUpdate(details) {
    if (details.updated && !details.live) {
      const lastFragment = details.fragments[details.fragments.length - 1];
      this.fragmentTracker.detectPartialFragments({
        frag: lastFragment,
        part: null,
        stats: lastFragment.stats,
        id: lastFragment.type
      });
    }
    if (!details.fragments[0]) {
      details.deltaUpdateFailed = true;
    }
  }
  waitForLive(levelInfo) {
    const details = levelInfo.details;
    return (details == null ? void 0 : details.live) && details.type !== "EVENT" && (this.levelLastLoaded !== levelInfo || details.expired);
  }
  flushMainBuffer(startOffset, endOffset, type = null) {
    if (!(startOffset - endOffset)) {
      return;
    }
    const flushScope = {
      startOffset,
      endOffset,
      type
    };
    this.hls.trigger(Events.BUFFER_FLUSHING, flushScope);
  }
  _loadInitSegment(fragment, level) {
    this._doFragLoad(fragment, level).then((data) => {
      const frag = data == null ? void 0 : data.frag;
      if (!frag || this.fragContextChanged(frag) || !this.levels) {
        throw new Error("init load aborted");
      }
      return data;
    }).then((data) => {
      const {
        hls
      } = this;
      const {
        frag,
        payload
      } = data;
      const decryptData = frag.decryptdata;
      if (payload && payload.byteLength > 0 && decryptData != null && decryptData.key && decryptData.iv && isFullSegmentEncryption(decryptData.method)) {
        const startTime = self.performance.now();
        return this.decrypter.decrypt(new Uint8Array(payload), decryptData.key.buffer, decryptData.iv.buffer, getAesModeFromFullSegmentMethod(decryptData.method)).catch((err) => {
          hls.trigger(Events.ERROR, {
            type: ErrorTypes.MEDIA_ERROR,
            details: ErrorDetails.FRAG_DECRYPT_ERROR,
            fatal: false,
            error: err,
            reason: err.message,
            frag
          });
          throw err;
        }).then((decryptedData) => {
          const endTime = self.performance.now();
          hls.trigger(Events.FRAG_DECRYPTED, {
            frag,
            payload: decryptedData,
            stats: {
              tstart: startTime,
              tdecrypt: endTime
            }
          });
          data.payload = decryptedData;
          return this.completeInitSegmentLoad(data);
        });
      }
      return this.completeInitSegmentLoad(data);
    }).catch((reason) => {
      if (this.state === State.STOPPED || this.state === State.ERROR) {
        return;
      }
      this.warn(reason);
      this.resetFragmentLoading(fragment);
    });
  }
  completeInitSegmentLoad(data) {
    const {
      levels
    } = this;
    if (!levels) {
      throw new Error("init load aborted, missing levels");
    }
    const stats = data.frag.stats;
    if (this.state !== State.STOPPED) {
      this.state = State.IDLE;
    }
    data.frag.data = new Uint8Array(data.payload);
    stats.parsing.start = stats.buffering.start = self.performance.now();
    stats.parsing.end = stats.buffering.end = self.performance.now();
    this.tick();
  }
  fragContextChanged(frag) {
    const {
      fragCurrent
    } = this;
    return !frag || !fragCurrent || frag.sn !== fragCurrent.sn || frag.level !== fragCurrent.level;
  }
  fragBufferedComplete(frag, part) {
    const media = this.mediaBuffer ? this.mediaBuffer : this.media;
    this.log(`Buffered ${frag.type} sn: ${frag.sn}${part ? " part: " + part.index : ""} of ${this.fragInfo(frag, false, part)} > buffer:${media ? TimeRanges.toString(BufferHelper.getBuffered(media)) : "(detached)"})`);
    if (isMediaFragment(frag)) {
      var _this$levels;
      if (frag.type !== PlaylistLevelType.SUBTITLE) {
        const el = frag.elementaryStreams;
        if (!Object.keys(el).some((type) => !!el[type])) {
          this.state = State.IDLE;
          return;
        }
      }
      const level = (_this$levels = this.levels) == null ? void 0 : _this$levels[frag.level];
      if (level != null && level.fragmentError) {
        this.log(`Resetting level fragment error count of ${level.fragmentError} on frag buffered`);
        level.fragmentError = 0;
      }
    }
    this.state = State.IDLE;
  }
  _handleFragmentLoadComplete(fragLoadedEndData) {
    const {
      transmuxer
    } = this;
    if (!transmuxer) {
      return;
    }
    const {
      frag,
      part,
      partsLoaded
    } = fragLoadedEndData;
    const complete = !partsLoaded || partsLoaded.length === 0 || partsLoaded.some((fragLoaded) => !fragLoaded);
    const chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount + 1, 0, part ? part.index : -1, !complete);
    transmuxer.flush(chunkMeta);
  }
  _handleFragmentLoadProgress(frag) {
  }
  _doFragLoad(frag, level, targetBufferTime = null, progressCallback) {
    var _frag$decryptdata;
    this.fragCurrent = frag;
    const details = level == null ? void 0 : level.details;
    if (!this.levels || !details) {
      throw new Error(`frag load aborted, missing level${details ? "" : " detail"}s`);
    }
    let keyLoadingPromise = null;
    if (frag.encrypted && !((_frag$decryptdata = frag.decryptdata) != null && _frag$decryptdata.key)) {
      this.log(`Loading key for ${frag.sn} of [${details.startSN}-${details.endSN}], ${this.playlistLabel()} ${frag.level}`);
      this.state = State.KEY_LOADING;
      this.fragCurrent = frag;
      keyLoadingPromise = this.keyLoader.load(frag).then((keyLoadedData) => {
        if (!this.fragContextChanged(keyLoadedData.frag)) {
          this.hls.trigger(Events.KEY_LOADED, keyLoadedData);
          if (this.state === State.KEY_LOADING) {
            this.state = State.IDLE;
          }
          return keyLoadedData;
        }
      });
      this.hls.trigger(Events.KEY_LOADING, {
        frag
      });
      if (this.fragCurrent === null) {
        keyLoadingPromise = Promise.reject(new Error(`frag load aborted, context changed in KEY_LOADING`));
      }
    } else if (!frag.encrypted) {
      keyLoadingPromise = this.keyLoader.loadClear(frag, details.encryptedFragments, this.startFragRequested);
      if (keyLoadingPromise) {
        this.log(`[eme] blocking frag load until media-keys acquired`);
      }
    }
    const fragPrevious = this.fragPrevious;
    if (isMediaFragment(frag) && (!fragPrevious || frag.sn !== fragPrevious.sn)) {
      const shouldLoadParts = this.shouldLoadParts(level.details, frag.end);
      if (shouldLoadParts !== this.loadingParts) {
        this.log(`LL-Part loading ${shouldLoadParts ? "ON" : "OFF"} loading sn ${fragPrevious == null ? void 0 : fragPrevious.sn}->${frag.sn}`);
        this.loadingParts = shouldLoadParts;
      }
    }
    targetBufferTime = Math.max(frag.start, targetBufferTime || 0);
    if (this.loadingParts && isMediaFragment(frag)) {
      const partList = details.partList;
      if (partList && progressCallback) {
        if (targetBufferTime > frag.end && details.fragmentHint) {
          frag = details.fragmentHint;
        }
        const partIndex = this.getNextPart(partList, frag, targetBufferTime);
        if (partIndex > -1) {
          const part = partList[partIndex];
          frag = this.fragCurrent = part.fragment;
          this.log(`Loading ${frag.type} sn: ${frag.sn} part: ${part.index} (${partIndex}/${partList.length - 1}) of ${this.fragInfo(frag, false, part)}) cc: ${frag.cc} [${details.startSN}-${details.endSN}], target: ${parseFloat(targetBufferTime.toFixed(3))}`);
          this.nextLoadPosition = part.start + part.duration;
          this.state = State.FRAG_LOADING;
          let _result;
          if (keyLoadingPromise) {
            _result = keyLoadingPromise.then((keyLoadedData) => {
              if (!keyLoadedData || this.fragContextChanged(keyLoadedData.frag)) {
                return null;
              }
              return this.doFragPartsLoad(frag, part, level, progressCallback);
            }).catch((error) => this.handleFragLoadError(error));
          } else {
            _result = this.doFragPartsLoad(frag, part, level, progressCallback).catch((error) => this.handleFragLoadError(error));
          }
          this.hls.trigger(Events.FRAG_LOADING, {
            frag,
            part,
            targetBufferTime
          });
          if (this.fragCurrent === null) {
            return Promise.reject(new Error(`frag load aborted, context changed in FRAG_LOADING parts`));
          }
          return _result;
        } else if (!frag.url || this.loadedEndOfParts(partList, targetBufferTime)) {
          return Promise.resolve(null);
        }
      }
    }
    if (isMediaFragment(frag) && this.loadingParts) {
      this.log(`LL-Part loading OFF after next part miss @${targetBufferTime.toFixed(2)}`);
      this.loadingParts = false;
    } else if (!frag.url) {
      return Promise.resolve(null);
    }
    this.log(`Loading ${frag.type} sn: ${frag.sn} of ${this.fragInfo(frag, false)}) cc: ${frag.cc} ${details ? "[" + details.startSN + "-" + details.endSN + "]" : ""}, target: ${parseFloat(targetBufferTime.toFixed(3))}`);
    if (isFiniteNumber(frag.sn) && !this.bitrateTest) {
      this.nextLoadPosition = frag.start + frag.duration;
    }
    this.state = State.FRAG_LOADING;
    const dataOnProgress = this.config.progressive;
    let result;
    if (dataOnProgress && keyLoadingPromise) {
      result = keyLoadingPromise.then((keyLoadedData) => {
        if (!keyLoadedData || this.fragContextChanged(keyLoadedData == null ? void 0 : keyLoadedData.frag)) {
          return null;
        }
        return this.fragmentLoader.load(frag, progressCallback);
      }).catch((error) => this.handleFragLoadError(error));
    } else {
      result = Promise.all([this.fragmentLoader.load(frag, dataOnProgress ? progressCallback : void 0), keyLoadingPromise]).then(([fragLoadedData]) => {
        if (!dataOnProgress && fragLoadedData && progressCallback) {
          progressCallback(fragLoadedData);
        }
        return fragLoadedData;
      }).catch((error) => this.handleFragLoadError(error));
    }
    this.hls.trigger(Events.FRAG_LOADING, {
      frag,
      targetBufferTime
    });
    if (this.fragCurrent === null) {
      return Promise.reject(new Error(`frag load aborted, context changed in FRAG_LOADING`));
    }
    return result;
  }
  doFragPartsLoad(frag, fromPart, level, progressCallback) {
    return new Promise((resolve, reject) => {
      var _level$details;
      const partsLoaded = [];
      const initialPartList = (_level$details = level.details) == null ? void 0 : _level$details.partList;
      const loadPart = (part) => {
        this.fragmentLoader.loadPart(frag, part, progressCallback).then((partLoadedData) => {
          partsLoaded[part.index] = partLoadedData;
          const loadedPart = partLoadedData.part;
          this.hls.trigger(Events.FRAG_LOADED, partLoadedData);
          const nextPart = getPartWith(level.details, frag.sn, part.index + 1) || findPart(initialPartList, frag.sn, part.index + 1);
          if (nextPart) {
            loadPart(nextPart);
          } else {
            return resolve({
              frag,
              part: loadedPart,
              partsLoaded
            });
          }
        }).catch(reject);
      };
      loadPart(fromPart);
    });
  }
  handleFragLoadError(error) {
    if ("data" in error) {
      const data = error.data;
      if (error.data && data.details === ErrorDetails.INTERNAL_ABORTED) {
        this.handleFragLoadAborted(data.frag, data.part);
      } else {
        this.hls.trigger(Events.ERROR, data);
      }
    } else {
      this.hls.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.INTERNAL_EXCEPTION,
        err: error,
        error,
        fatal: true
      });
    }
    return null;
  }
  _handleTransmuxerFlush(chunkMeta) {
    const context = this.getCurrentContext(chunkMeta);
    if (!context || this.state !== State.PARSING) {
      if (!this.fragCurrent && this.state !== State.STOPPED && this.state !== State.ERROR) {
        this.state = State.IDLE;
      }
      return;
    }
    const {
      frag,
      part,
      level
    } = context;
    const now2 = self.performance.now();
    frag.stats.parsing.end = now2;
    if (part) {
      part.stats.parsing.end = now2;
    }
    const levelDetails = this.getLevelDetails();
    const loadingPartsAtEdge = levelDetails && frag.sn > levelDetails.endSN;
    const shouldLoadParts = loadingPartsAtEdge || this.shouldLoadParts(levelDetails, frag.end);
    if (shouldLoadParts !== this.loadingParts) {
      this.log(`LL-Part loading ${shouldLoadParts ? "ON" : "OFF"} after parsing segment ending @${frag.end.toFixed(2)}`);
      this.loadingParts = shouldLoadParts;
    }
    this.updateLevelTiming(frag, part, level, chunkMeta.partial);
  }
  shouldLoadParts(details, bufferEnd) {
    if (this.config.lowLatencyMode) {
      if (!details) {
        return this.loadingParts;
      }
      if (details != null && details.partList) {
        var _details$fragmentHint;
        const firstPart = details.partList[0];
        const safePartStart = firstPart.end + (((_details$fragmentHint = details.fragmentHint) == null ? void 0 : _details$fragmentHint.duration) || 0);
        if (bufferEnd >= safePartStart) {
          var _this$media;
          const playhead = this.hls.hasEnoughToStart ? ((_this$media = this.media) == null ? void 0 : _this$media.currentTime) || this.lastCurrentTime : this.getLoadPosition();
          if (playhead > firstPart.start - firstPart.fragment.duration) {
            return true;
          }
        }
      }
    }
    return false;
  }
  getCurrentContext(chunkMeta) {
    const {
      levels,
      fragCurrent
    } = this;
    const {
      level: levelIndex,
      sn,
      part: partIndex
    } = chunkMeta;
    if (!(levels != null && levels[levelIndex])) {
      this.warn(`Levels object was unset while buffering fragment ${sn} of ${this.playlistLabel()} ${levelIndex}. The current chunk will not be buffered.`);
      return null;
    }
    const level = levels[levelIndex];
    const levelDetails = level.details;
    const part = partIndex > -1 ? getPartWith(levelDetails, sn, partIndex) : null;
    const frag = part ? part.fragment : getFragmentWithSN(levelDetails, sn, fragCurrent);
    if (!frag) {
      return null;
    }
    if (fragCurrent && fragCurrent !== frag) {
      frag.stats = fragCurrent.stats;
    }
    return {
      frag,
      part,
      level
    };
  }
  bufferFragmentData(data, frag, part, chunkMeta, noBacktracking) {
    var _buffer;
    if (!data || this.state !== State.PARSING) {
      return;
    }
    const {
      data1,
      data2
    } = data;
    let buffer = data1;
    if (data1 && data2) {
      buffer = appendUint8Array(data1, data2);
    }
    if (!((_buffer = buffer) != null && _buffer.length)) {
      return;
    }
    const offsetTimestamp = this.initPTS[frag.cc];
    const offset = offsetTimestamp ? -offsetTimestamp.baseTime / offsetTimestamp.timescale : void 0;
    const segment = {
      type: data.type,
      frag,
      part,
      chunkMeta,
      offset,
      parent: frag.type,
      data: buffer
    };
    this.hls.trigger(Events.BUFFER_APPENDING, segment);
    if (data.dropped && data.independent && !part) {
      if (noBacktracking) {
        return;
      }
      this.flushBufferGap(frag);
    }
  }
  flushBufferGap(frag) {
    const media = this.media;
    if (!media) {
      return;
    }
    if (!BufferHelper.isBuffered(media, media.currentTime)) {
      this.flushMainBuffer(0, frag.start);
      return;
    }
    const currentTime = media.currentTime;
    const bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
    const fragDuration = frag.duration;
    const segmentFraction = Math.min(this.config.maxFragLookUpTolerance * 2, fragDuration * 0.25);
    const start = Math.max(Math.min(frag.start - segmentFraction, bufferInfo.end - segmentFraction), currentTime + segmentFraction);
    if (frag.start - start > segmentFraction) {
      this.flushMainBuffer(start, frag.start);
    }
  }
  getFwdBufferInfo(bufferable, type) {
    var _this$media2;
    const pos = this.getLoadPosition();
    if (!isFiniteNumber(pos)) {
      return null;
    }
    const backwardSeek = this.lastCurrentTime > pos;
    const maxBufferHole = backwardSeek || (_this$media2 = this.media) != null && _this$media2.paused ? 0 : this.config.maxBufferHole;
    return this.getFwdBufferInfoAtPos(bufferable, pos, type, maxBufferHole);
  }
  getFwdBufferInfoAtPos(bufferable, pos, type, maxBufferHole) {
    const bufferInfo = BufferHelper.bufferInfo(bufferable, pos, maxBufferHole);
    if (bufferInfo.len === 0 && bufferInfo.nextStart !== void 0) {
      const bufferedFragAtPos = this.fragmentTracker.getBufferedFrag(pos, type);
      if (bufferedFragAtPos && (bufferInfo.nextStart <= bufferedFragAtPos.end || bufferedFragAtPos.gap)) {
        const gapDuration = Math.max(Math.min(bufferInfo.nextStart, bufferedFragAtPos.end) - pos, maxBufferHole);
        return BufferHelper.bufferInfo(bufferable, pos, gapDuration);
      }
    }
    return bufferInfo;
  }
  getMaxBufferLength(levelBitrate) {
    const {
      config
    } = this;
    let maxBufLen;
    if (levelBitrate) {
      maxBufLen = Math.max(8 * config.maxBufferSize / levelBitrate, config.maxBufferLength);
    } else {
      maxBufLen = config.maxBufferLength;
    }
    return Math.min(maxBufLen, config.maxMaxBufferLength);
  }
  reduceMaxBufferLength(threshold, fragDuration) {
    const config = this.config;
    const minLength = Math.max(Math.min(threshold - fragDuration, config.maxBufferLength), fragDuration);
    const reducedLength = Math.max(threshold - fragDuration * 3, config.maxMaxBufferLength / 2, minLength);
    if (reducedLength >= minLength) {
      config.maxMaxBufferLength = reducedLength;
      this.warn(`Reduce max buffer length to ${reducedLength}s`);
      return true;
    }
    return false;
  }
  getAppendedFrag(position, playlistType = PlaylistLevelType.MAIN) {
    var _this$fragmentTracker;
    const fragOrPart = (_this$fragmentTracker = this.fragmentTracker) == null ? void 0 : _this$fragmentTracker.getAppendedFrag(position, playlistType);
    if (fragOrPart && "fragment" in fragOrPart) {
      return fragOrPart.fragment;
    }
    return fragOrPart;
  }
  getNextFragment(pos, levelDetails) {
    const fragments = levelDetails.fragments;
    const fragLen = fragments.length;
    if (!fragLen) {
      return null;
    }
    const {
      config
    } = this;
    const start = fragments[0].start;
    const canLoadParts = config.lowLatencyMode && !!levelDetails.partList;
    let frag = null;
    if (levelDetails.live) {
      const initialLiveManifestSize = config.initialLiveManifestSize;
      if (fragLen < initialLiveManifestSize) {
        this.warn(`Not enough fragments to start playback (have: ${fragLen}, need: ${initialLiveManifestSize})`);
        return null;
      }
      if (!levelDetails.PTSKnown && !this.startFragRequested && this.startPosition === -1 || pos < start) {
        var _frag;
        if (canLoadParts && !this.loadingParts) {
          this.log(`LL-Part loading ON for initial live fragment`);
          this.loadingParts = true;
        }
        frag = this.getInitialLiveFragment(levelDetails);
        const mainStart = this.hls.startPosition;
        const liveSyncPosition = this.hls.liveSyncPosition;
        const startPosition = frag ? (mainStart !== -1 && mainStart >= start ? mainStart : liveSyncPosition) || frag.start : pos;
        this.log(`Setting startPosition to ${startPosition} to match start frag at live edge. mainStart: ${mainStart} liveSyncPosition: ${liveSyncPosition} frag.start: ${(_frag = frag) == null ? void 0 : _frag.start}`);
        this.startPosition = this.nextLoadPosition = startPosition;
      }
    } else if (pos <= start) {
      frag = fragments[0];
    }
    if (!frag) {
      const end = this.loadingParts ? levelDetails.partEnd : levelDetails.fragmentEnd;
      frag = this.getFragmentAtPosition(pos, end, levelDetails);
    }
    let programFrag = this.filterReplacedPrimary(frag, levelDetails);
    if (!programFrag && frag) {
      const curSNIdx = frag.sn - levelDetails.startSN;
      programFrag = this.filterReplacedPrimary(fragments[curSNIdx + 1] || null, levelDetails);
    }
    return this.mapToInitFragWhenRequired(programFrag);
  }
  isLoopLoading(frag, targetBufferTime) {
    const trackerState = this.fragmentTracker.getState(frag);
    return (trackerState === FragmentState.OK || trackerState === FragmentState.PARTIAL && !!frag.gap) && this.nextLoadPosition > targetBufferTime;
  }
  getNextFragmentLoopLoading(frag, levelDetails, bufferInfo, playlistType, maxBufLen) {
    let nextFragment = null;
    if (frag.gap) {
      nextFragment = this.getNextFragment(this.nextLoadPosition, levelDetails);
      if (nextFragment && !nextFragment.gap && bufferInfo.nextStart) {
        const nextbufferInfo = this.getFwdBufferInfoAtPos(this.mediaBuffer ? this.mediaBuffer : this.media, bufferInfo.nextStart, playlistType, 0);
        if (nextbufferInfo !== null && bufferInfo.len + nextbufferInfo.len >= maxBufLen) {
          const sn = nextFragment.sn;
          if (this.loopSn !== sn) {
            this.log(`buffer full after gaps in "${playlistType}" playlist starting at sn: ${sn}`);
            this.loopSn = sn;
          }
          return null;
        }
      }
    }
    this.loopSn = void 0;
    return nextFragment;
  }
  get primaryPrefetch() {
    if (interstitialsEnabled(this.hls.config)) {
      var _this$hls$interstitia, _this$hls$interstitia2;
      const playingInterstitial = (_this$hls$interstitia = this.hls.interstitialsManager) == null ? void 0 : (_this$hls$interstitia2 = _this$hls$interstitia.playingItem) == null ? void 0 : _this$hls$interstitia2.event;
      if (playingInterstitial) {
        return true;
      }
    }
    return false;
  }
  filterReplacedPrimary(frag, details) {
    if (!frag) {
      return frag;
    }
    if (interstitialsEnabled(this.hls.config) && frag.type !== PlaylistLevelType.SUBTITLE) {
      const interstitials = this.hls.interstitialsManager;
      const bufferingItem = interstitials == null ? void 0 : interstitials.bufferingItem;
      if (bufferingItem) {
        const bufferingInterstitial = bufferingItem.event;
        if (bufferingInterstitial) {
          if (bufferingInterstitial.appendInPlace || Math.abs(frag.start - bufferingItem.start) > 1 || bufferingItem.start === 0) {
            return null;
          }
        } else {
          if (frag.end <= bufferingItem.start && (details == null ? void 0 : details.live) === false) {
            return null;
          }
          if (frag.start > bufferingItem.end && bufferingItem.nextEvent) {
            if (bufferingItem.nextEvent.appendInPlace || frag.start - bufferingItem.end > 1) {
              return null;
            }
          }
        }
      }
      const playerQueue = interstitials == null ? void 0 : interstitials.playerQueue;
      if (playerQueue) {
        for (let i = playerQueue.length; i--; ) {
          const interstitial = playerQueue[i].interstitial;
          if (interstitial.appendInPlace && frag.start >= interstitial.startTime && frag.end <= interstitial.resumeTime) {
            return null;
          }
        }
      }
    }
    return frag;
  }
  mapToInitFragWhenRequired(frag) {
    if (frag != null && frag.initSegment && !(frag != null && frag.initSegment.data) && !this.bitrateTest) {
      return frag.initSegment;
    }
    return frag;
  }
  getNextPart(partList, frag, targetBufferTime) {
    let nextPart = -1;
    let contiguous = false;
    let independentAttrOmitted = true;
    for (let i = 0, len = partList.length; i < len; i++) {
      const part = partList[i];
      independentAttrOmitted = independentAttrOmitted && !part.independent;
      if (nextPart > -1 && targetBufferTime < part.start) {
        break;
      }
      const loaded = part.loaded;
      if (loaded) {
        nextPart = -1;
      } else if ((contiguous || part.independent || independentAttrOmitted) && part.fragment === frag) {
        nextPart = i;
      }
      contiguous = loaded;
    }
    return nextPart;
  }
  loadedEndOfParts(partList, targetBufferTime) {
    const lastPart = partList[partList.length - 1];
    return lastPart && targetBufferTime > lastPart.start && lastPart.loaded;
  }
  getInitialLiveFragment(levelDetails) {
    const fragments = levelDetails.fragments;
    const fragPrevious = this.fragPrevious;
    let frag = null;
    if (fragPrevious) {
      if (levelDetails.hasProgramDateTime) {
        this.log(`Live playlist, switching playlist, load frag with same PDT: ${fragPrevious.programDateTime}`);
        frag = findFragmentByPDT(fragments, fragPrevious.endProgramDateTime, this.config.maxFragLookUpTolerance);
      }
      if (!frag) {
        const targetSN = fragPrevious.sn + 1;
        if (targetSN >= levelDetails.startSN && targetSN <= levelDetails.endSN) {
          const fragNext = fragments[targetSN - levelDetails.startSN];
          if (fragPrevious.cc === fragNext.cc) {
            frag = fragNext;
            this.log(`Live playlist, switching playlist, load frag with next SN: ${frag.sn}`);
          }
        }
        if (!frag) {
          frag = findNearestWithCC(levelDetails, fragPrevious.cc, fragPrevious.end);
          if (frag) {
            this.log(`Live playlist, switching playlist, load frag with same CC: ${frag.sn}`);
          }
        }
      }
    } else {
      const liveStart = this.hls.liveSyncPosition;
      if (liveStart !== null) {
        frag = this.getFragmentAtPosition(liveStart, this.bitrateTest ? levelDetails.fragmentEnd : levelDetails.edge, levelDetails);
      }
    }
    return frag;
  }
  getFragmentAtPosition(bufferEnd, end, levelDetails) {
    const {
      config
    } = this;
    let {
      fragPrevious
    } = this;
    let {
      fragments,
      endSN
    } = levelDetails;
    const {
      fragmentHint
    } = levelDetails;
    const {
      maxFragLookUpTolerance
    } = config;
    const partList = levelDetails.partList;
    const loadingParts = !!(this.loadingParts && partList != null && partList.length && fragmentHint);
    if (loadingParts && fragmentHint && !this.bitrateTest && partList[partList.length - 1].fragment.sn === fragmentHint.sn) {
      fragments = fragments.concat(fragmentHint);
      endSN = fragmentHint.sn;
    }
    let frag;
    if (bufferEnd < end) {
      var _this$media3;
      const backwardSeek = bufferEnd < this.lastCurrentTime;
      const lookupTolerance = backwardSeek || bufferEnd > end - maxFragLookUpTolerance || (_this$media3 = this.media) != null && _this$media3.paused || !this.startFragRequested ? 0 : maxFragLookUpTolerance;
      frag = findFragmentByPTS(fragPrevious, fragments, bufferEnd, lookupTolerance);
    } else {
      frag = fragments[fragments.length - 1];
    }
    if (frag) {
      const curSNIdx = frag.sn - levelDetails.startSN;
      const fragState = this.fragmentTracker.getState(frag);
      if (fragState === FragmentState.OK || fragState === FragmentState.PARTIAL && frag.gap) {
        fragPrevious = frag;
      }
      if (fragPrevious && frag.sn === fragPrevious.sn && (!loadingParts || partList[0].fragment.sn > frag.sn || !levelDetails.live && !loadingParts)) {
        const sameLevel = fragPrevious && frag.level === fragPrevious.level;
        if (sameLevel) {
          const nextFrag = fragments[curSNIdx + 1];
          if (frag.sn < endSN && this.fragmentTracker.getState(nextFrag) !== FragmentState.OK) {
            frag = nextFrag;
          } else {
            frag = null;
          }
        }
      }
    }
    return frag;
  }
  alignPlaylists(details, previousDetails, switchDetails) {
    const length = details.fragments.length;
    if (!length) {
      this.warn(`No fragments in live playlist`);
      return 0;
    }
    const slidingStart = details.fragmentStart;
    const firstLevelLoad = !previousDetails;
    const aligned = details.alignedSliding && isFiniteNumber(slidingStart);
    if (firstLevelLoad || !aligned && !slidingStart) {
      alignStream(switchDetails, details);
      const alignedSlidingStart = details.fragmentStart;
      this.log(`Live playlist sliding: ${alignedSlidingStart.toFixed(2)} start-sn: ${previousDetails ? previousDetails.startSN : "na"}->${details.startSN} fragments: ${length}`);
      return alignedSlidingStart;
    }
    return slidingStart;
  }
  waitForCdnTuneIn(details) {
    const advancePartLimit = 3;
    return details.live && details.canBlockReload && details.partTarget && details.tuneInGoal > Math.max(details.partHoldBack, details.partTarget * advancePartLimit);
  }
  setStartPosition(details, sliding) {
    let startPosition = this.startPosition;
    if (startPosition < sliding) {
      startPosition = -1;
    }
    const timelineOffset = this.timelineOffset;
    if (startPosition === -1) {
      const offsetInMultivariantPlaylist = this.startTimeOffset !== null;
      const startTimeOffset = offsetInMultivariantPlaylist ? this.startTimeOffset : details.startTimeOffset;
      if (startTimeOffset !== null && isFiniteNumber(startTimeOffset)) {
        startPosition = sliding + startTimeOffset;
        if (startTimeOffset < 0) {
          startPosition += details.edge;
        }
        startPosition = Math.min(Math.max(sliding, startPosition), sliding + details.totalduration);
        this.log(`Setting startPosition to ${startPosition} for start time offset ${startTimeOffset} found in ${offsetInMultivariantPlaylist ? "multivariant" : "media"} playlist`);
        this.startPosition = startPosition;
      } else if (details.live) {
        startPosition = this.hls.liveSyncPosition || sliding;
        this.log(`Setting startPosition to -1 to start at live edge ${startPosition}`);
        this.startPosition = -1;
      } else {
        this.log(`setting startPosition to 0 by default`);
        this.startPosition = startPosition = 0;
      }
      this.lastCurrentTime = startPosition + timelineOffset;
    }
    this.nextLoadPosition = startPosition + timelineOffset;
  }
  getLoadPosition() {
    var _this$hls;
    const {
      media
    } = this;
    let pos = 0;
    if ((_this$hls = this.hls) != null && _this$hls.hasEnoughToStart && media) {
      pos = media.currentTime;
    } else if (this.nextLoadPosition >= 0) {
      pos = this.nextLoadPosition;
    }
    return pos;
  }
  handleFragLoadAborted(frag, part) {
    if (this.transmuxer && frag.type === this.playlistType && isMediaFragment(frag) && frag.stats.aborted) {
      this.log(`Fragment ${frag.sn}${part ? " part " + part.index : ""} of ${this.playlistLabel()} ${frag.level} was aborted`);
      this.resetFragmentLoading(frag);
    }
  }
  resetFragmentLoading(frag) {
    if (!this.fragCurrent || !this.fragContextChanged(frag) && this.state !== State.FRAG_LOADING_WAITING_RETRY) {
      this.state = State.IDLE;
    }
  }
  onFragmentOrKeyLoadError(filterType, data) {
    if (data.chunkMeta && !data.frag) {
      const context = this.getCurrentContext(data.chunkMeta);
      if (context) {
        data.frag = context.frag;
      }
    }
    const frag = data.frag;
    if (!frag || frag.type !== filterType || !this.levels) {
      return;
    }
    if (this.fragContextChanged(frag)) {
      var _this$fragCurrent;
      this.warn(`Frag load error must match current frag to retry ${frag.url} > ${(_this$fragCurrent = this.fragCurrent) == null ? void 0 : _this$fragCurrent.url}`);
      return;
    }
    const gapTagEncountered = data.details === ErrorDetails.FRAG_GAP;
    if (gapTagEncountered) {
      this.fragmentTracker.fragBuffered(frag, true);
    }
    const errorAction = data.errorAction;
    const {
      action,
      flags,
      retryCount = 0,
      retryConfig
    } = errorAction || {};
    const couldRetry = !!errorAction && !!retryConfig;
    const retry = couldRetry && action === NetworkErrorAction.RetryRequest;
    const noAlternate = couldRetry && !errorAction.resolved && flags === ErrorActionFlags.MoveAllAlternatesMatchingHost;
    if (!retry && noAlternate && isMediaFragment(frag) && !frag.endList) {
      this.resetFragmentErrors(filterType);
      this.treatAsGap(frag);
      errorAction.resolved = true;
    } else if ((retry || noAlternate) && retryCount < retryConfig.maxNumRetry) {
      this.resetStartWhenNotLoaded(this.levelLastLoaded);
      const delay = getRetryDelay(retryConfig, retryCount);
      this.warn(`Fragment ${frag.sn} of ${filterType} ${frag.level} errored with ${data.details}, retrying loading ${retryCount + 1}/${retryConfig.maxNumRetry} in ${delay}ms`);
      errorAction.resolved = true;
      this.retryDate = self.performance.now() + delay;
      this.state = State.FRAG_LOADING_WAITING_RETRY;
    } else if (retryConfig && errorAction) {
      this.resetFragmentErrors(filterType);
      if (retryCount < retryConfig.maxNumRetry) {
        if (!gapTagEncountered && action !== NetworkErrorAction.RemoveAlternatePermanently) {
          errorAction.resolved = true;
        }
      } else {
        this.warn(`${data.details} reached or exceeded max retry (${retryCount})`);
        return;
      }
    } else if (action === NetworkErrorAction.SendAlternateToPenaltyBox) {
      this.state = State.WAITING_LEVEL;
    } else {
      this.state = State.ERROR;
    }
    this.tickImmediate();
  }
  reduceLengthAndFlushBuffer(data) {
    if (this.state === State.PARSING || this.state === State.PARSED) {
      const frag = data.frag;
      const playlistType = data.parent;
      const bufferedInfo = this.getFwdBufferInfo(this.mediaBuffer, playlistType);
      const buffered = bufferedInfo && bufferedInfo.len > 0.5;
      if (buffered) {
        this.reduceMaxBufferLength(bufferedInfo.len, (frag == null ? void 0 : frag.duration) || 10);
      }
      const flushBuffer = !buffered;
      if (flushBuffer) {
        this.warn(`Buffer full error while media.currentTime is not buffered, flush ${playlistType} buffer`);
      }
      if (frag) {
        this.fragmentTracker.removeFragment(frag);
        this.nextLoadPosition = frag.start;
      }
      this.resetLoadingState();
      return flushBuffer;
    }
    return false;
  }
  resetFragmentErrors(filterType) {
    if (filterType === PlaylistLevelType.AUDIO) {
      this.fragCurrent = null;
    }
    if (!this.hls.hasEnoughToStart) {
      this.startFragRequested = false;
    }
    if (this.state !== State.STOPPED) {
      this.state = State.IDLE;
    }
  }
  afterBufferFlushed(media, bufferType, playlistType) {
    if (!media) {
      return;
    }
    const bufferedTimeRanges = BufferHelper.getBuffered(media);
    this.fragmentTracker.detectEvictedFragments(bufferType, bufferedTimeRanges, playlistType);
    if (this.state === State.ENDED) {
      this.resetLoadingState();
    }
  }
  resetLoadingState() {
    this.log("Reset loading state");
    this.fragCurrent = null;
    this.fragPrevious = null;
    if (this.state !== State.STOPPED) {
      this.state = State.IDLE;
    }
  }
  resetStartWhenNotLoaded(level) {
    if (!this.hls.hasEnoughToStart) {
      this.startFragRequested = false;
      const details = level ? level.details : null;
      if (details != null && details.live) {
        this.log(`resetting startPosition for live start`);
        this.startPosition = -1;
        this.setStartPosition(details, details.fragmentStart);
        this.resetLoadingState();
      } else {
        this.nextLoadPosition = this.startPosition;
      }
    }
  }
  resetWhenMissingContext(chunkMeta) {
    this.warn(`The loading context changed while buffering fragment ${chunkMeta.sn} of ${this.playlistLabel()} ${chunkMeta.level}. This chunk will not be buffered.`);
    this.removeUnbufferedFrags();
    this.resetStartWhenNotLoaded(this.levelLastLoaded);
    this.resetLoadingState();
  }
  removeUnbufferedFrags(start = 0) {
    this.fragmentTracker.removeFragmentsInRange(start, Infinity, this.playlistType, false, true);
  }
  updateLevelTiming(frag, part, level, partial) {
    const details = level.details;
    if (!details) {
      this.warn("level.details undefined");
      return;
    }
    const parsed = Object.keys(frag.elementaryStreams).reduce((result, type) => {
      const info = frag.elementaryStreams[type];
      if (info) {
        const parsedDuration = info.endPTS - info.startPTS;
        if (parsedDuration <= 0) {
          this.warn(`Could not parse fragment ${frag.sn} ${type} duration reliably (${parsedDuration})`);
          return result || false;
        }
        const drift = partial ? 0 : updateFragPTSDTS(details, frag, info.startPTS, info.endPTS, info.startDTS, info.endDTS);
        this.hls.trigger(Events.LEVEL_PTS_UPDATED, {
          details,
          level,
          drift,
          type,
          frag,
          start: info.startPTS,
          end: info.endPTS
        });
        return true;
      }
      return result;
    }, false);
    if (!parsed) {
      var _this$transmuxer;
      if (level.fragmentError === 0) {
        this.treatAsGap(frag, level);
      }
      if (((_this$transmuxer = this.transmuxer) == null ? void 0 : _this$transmuxer.error) === null) {
        const error = new Error(`Found no media in fragment ${frag.sn} of ${this.playlistLabel()} ${frag.level} resetting transmuxer to fallback to playlist timing`);
        this.warn(error.message);
        this.hls.trigger(Events.ERROR, {
          type: ErrorTypes.MEDIA_ERROR,
          details: ErrorDetails.FRAG_PARSING_ERROR,
          fatal: false,
          error,
          frag,
          reason: `Found no media in msn ${frag.sn} of ${this.playlistLabel()} "${level.url}"`
        });
        if (!this.hls) {
          return;
        }
        this.resetTransmuxer();
      }
    }
    this.state = State.PARSED;
    this.log(`Parsed ${frag.type} sn: ${frag.sn}${part ? " part: " + part.index : ""} of ${this.fragInfo(frag, false, part)})`);
    this.hls.trigger(Events.FRAG_PARSED, {
      frag,
      part
    });
  }
  playlistLabel() {
    return this.playlistType === PlaylistLevelType.MAIN ? "level" : "track";
  }
  fragInfo(frag, pts = true, part) {
    var _ref, _ref2;
    return `${this.playlistLabel()} ${frag.level} (${part ? "part" : "frag"}:[${((_ref = pts && !part ? frag.startPTS : (part || frag).start) != null ? _ref : NaN).toFixed(3)}-${((_ref2 = pts && !part ? frag.endPTS : (part || frag).end) != null ? _ref2 : NaN).toFixed(3)}]${part && frag.type === "main" ? "INDEPENDENT=" + (part.independent ? "YES" : "NO") : ""}`;
  }
  treatAsGap(frag, level) {
    if (level) {
      level.fragmentError++;
    }
    frag.gap = true;
    this.fragmentTracker.removeFragment(frag);
    this.fragmentTracker.fragBuffered(frag, true);
  }
  resetTransmuxer() {
    var _this$transmuxer2;
    (_this$transmuxer2 = this.transmuxer) == null ? void 0 : _this$transmuxer2.reset();
  }
  recoverWorkerError(data) {
    if (data.event === "demuxerWorker") {
      this.fragmentTracker.removeAllFragments();
      if (this.transmuxer) {
        this.transmuxer.destroy();
        this.transmuxer = null;
      }
      this.resetStartWhenNotLoaded(this.levelLastLoaded);
      this.resetLoadingState();
    }
  }
  set state(nextState) {
    const previousState = this._state;
    if (previousState !== nextState) {
      this._state = nextState;
      this.log(`${previousState}->${nextState}`);
    }
  }
  get state() {
    return this._state;
  }
};
function interstitialsEnabled(config) {
  return !!config.interstitialsController && config.enableInterstitialPlayback !== false;
}
var ChunkCache = class {
  constructor() {
    this.chunks = [];
    this.dataLength = 0;
  }
  push(chunk) {
    this.chunks.push(chunk);
    this.dataLength += chunk.length;
  }
  flush() {
    const {
      chunks,
      dataLength
    } = this;
    let result;
    if (!chunks.length) {
      return new Uint8Array(0);
    } else if (chunks.length === 1) {
      result = chunks[0];
    } else {
      result = concatUint8Arrays(chunks, dataLength);
    }
    this.reset();
    return result;
  }
  reset() {
    this.chunks.length = 0;
    this.dataLength = 0;
  }
};
function concatUint8Arrays(chunks, dataLength) {
  const result = new Uint8Array(dataLength);
  let offset = 0;
  for (let i = 0; i < chunks.length; i++) {
    const chunk = chunks[i];
    result.set(chunk, offset);
    offset += chunk.length;
  }
  return result;
}
var eventemitter3 = { exports: {} };
var hasRequiredEventemitter3;
function requireEventemitter3() {
  if (hasRequiredEventemitter3)
    return eventemitter3.exports;
  hasRequiredEventemitter3 = 1;
  (function(module) {
    var has = Object.prototype.hasOwnProperty, prefix = "~";
    function Events2() {
    }
    if (Object.create) {
      Events2.prototype = /* @__PURE__ */ Object.create(null);
      if (!new Events2().__proto__)
        prefix = false;
    }
    function EE(fn, context, once) {
      this.fn = fn;
      this.context = context;
      this.once = once || false;
    }
    function addListener(emitter, event, fn, context, once) {
      if (typeof fn !== "function") {
        throw new TypeError("The listener must be a function");
      }
      var listener = new EE(fn, context || emitter, once), evt = prefix ? prefix + event : event;
      if (!emitter._events[evt])
        emitter._events[evt] = listener, emitter._eventsCount++;
      else if (!emitter._events[evt].fn)
        emitter._events[evt].push(listener);
      else
        emitter._events[evt] = [emitter._events[evt], listener];
      return emitter;
    }
    function clearEvent(emitter, evt) {
      if (--emitter._eventsCount === 0)
        emitter._events = new Events2();
      else
        delete emitter._events[evt];
    }
    function EventEmitter2() {
      this._events = new Events2();
      this._eventsCount = 0;
    }
    EventEmitter2.prototype.eventNames = function eventNames() {
      var names = [], events, name;
      if (this._eventsCount === 0)
        return names;
      for (name in events = this._events) {
        if (has.call(events, name))
          names.push(prefix ? name.slice(1) : name);
      }
      if (Object.getOwnPropertySymbols) {
        return names.concat(Object.getOwnPropertySymbols(events));
      }
      return names;
    };
    EventEmitter2.prototype.listeners = function listeners(event) {
      var evt = prefix ? prefix + event : event, handlers = this._events[evt];
      if (!handlers)
        return [];
      if (handlers.fn)
        return [handlers.fn];
      for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
        ee[i] = handlers[i].fn;
      }
      return ee;
    };
    EventEmitter2.prototype.listenerCount = function listenerCount(event) {
      var evt = prefix ? prefix + event : event, listeners = this._events[evt];
      if (!listeners)
        return 0;
      if (listeners.fn)
        return 1;
      return listeners.length;
    };
    EventEmitter2.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
      var evt = prefix ? prefix + event : event;
      if (!this._events[evt])
        return false;
      var listeners = this._events[evt], len = arguments.length, args, i;
      if (listeners.fn) {
        if (listeners.once)
          this.removeListener(event, listeners.fn, void 0, true);
        switch (len) {
          case 1:
            return listeners.fn.call(listeners.context), true;
          case 2:
            return listeners.fn.call(listeners.context, a1), true;
          case 3:
            return listeners.fn.call(listeners.context, a1, a2), true;
          case 4:
            return listeners.fn.call(listeners.context, a1, a2, a3), true;
          case 5:
            return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
          case 6:
            return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
        }
        for (i = 1, args = new Array(len - 1); i < len; i++) {
          args[i - 1] = arguments[i];
        }
        listeners.fn.apply(listeners.context, args);
      } else {
        var length = listeners.length, j;
        for (i = 0; i < length; i++) {
          if (listeners[i].once)
            this.removeListener(event, listeners[i].fn, void 0, true);
          switch (len) {
            case 1:
              listeners[i].fn.call(listeners[i].context);
              break;
            case 2:
              listeners[i].fn.call(listeners[i].context, a1);
              break;
            case 3:
              listeners[i].fn.call(listeners[i].context, a1, a2);
              break;
            case 4:
              listeners[i].fn.call(listeners[i].context, a1, a2, a3);
              break;
            default:
              if (!args)
                for (j = 1, args = new Array(len - 1); j < len; j++) {
                  args[j - 1] = arguments[j];
                }
              listeners[i].fn.apply(listeners[i].context, args);
          }
        }
      }
      return true;
    };
    EventEmitter2.prototype.on = function on(event, fn, context) {
      return addListener(this, event, fn, context, false);
    };
    EventEmitter2.prototype.once = function once(event, fn, context) {
      return addListener(this, event, fn, context, true);
    };
    EventEmitter2.prototype.removeListener = function removeListener(event, fn, context, once) {
      var evt = prefix ? prefix + event : event;
      if (!this._events[evt])
        return this;
      if (!fn) {
        clearEvent(this, evt);
        return this;
      }
      var listeners = this._events[evt];
      if (listeners.fn) {
        if (listeners.fn === fn && (!once || listeners.once) && (!context || listeners.context === context)) {
          clearEvent(this, evt);
        }
      } else {
        for (var i = 0, events = [], length = listeners.length; i < length; i++) {
          if (listeners[i].fn !== fn || once && !listeners[i].once || context && listeners[i].context !== context) {
            events.push(listeners[i]);
          }
        }
        if (events.length)
          this._events[evt] = events.length === 1 ? events[0] : events;
        else
          clearEvent(this, evt);
      }
      return this;
    };
    EventEmitter2.prototype.removeAllListeners = function removeAllListeners(event) {
      var evt;
      if (event) {
        evt = prefix ? prefix + event : event;
        if (this._events[evt])
          clearEvent(this, evt);
      } else {
        this._events = new Events2();
        this._eventsCount = 0;
      }
      return this;
    };
    EventEmitter2.prototype.off = EventEmitter2.prototype.removeListener;
    EventEmitter2.prototype.addListener = EventEmitter2.prototype.on;
    EventEmitter2.prefixed = prefix;
    EventEmitter2.EventEmitter = EventEmitter2;
    {
      module.exports = EventEmitter2;
    }
  })(eventemitter3);
  return eventemitter3.exports;
}
var eventemitter3Exports = requireEventemitter3();
var EventEmitter = getDefaultExportFromCjs(eventemitter3Exports);
var version = "1.6.7";
var workerStore = {};
function hasUMDWorker() {
  return typeof __HLS_WORKER_BUNDLE__ === "function";
}
function injectWorker() {
  const workerContext = workerStore[version];
  if (workerContext) {
    workerContext.clientCount++;
    return workerContext;
  }
  const blob = new self.Blob([`var exports={};var module={exports:exports};function define(f){f()};define.amd=true;(${__HLS_WORKER_BUNDLE__.toString()})(true);`], {
    type: "text/javascript"
  });
  const objectURL = self.URL.createObjectURL(blob);
  const worker = new self.Worker(objectURL);
  const result = {
    worker,
    objectURL,
    clientCount: 1
  };
  workerStore[version] = result;
  return result;
}
function loadWorker(path) {
  const workerContext = workerStore[path];
  if (workerContext) {
    workerContext.clientCount++;
    return workerContext;
  }
  const scriptURL = new self.URL(path, self.location.href).href;
  const worker = new self.Worker(scriptURL);
  const result = {
    worker,
    scriptURL,
    clientCount: 1
  };
  workerStore[path] = result;
  return result;
}
function removeWorkerFromStore(path) {
  const workerContext = workerStore[path || version];
  if (workerContext) {
    const clientCount = workerContext.clientCount--;
    if (clientCount === 1) {
      const {
        worker,
        objectURL
      } = workerContext;
      delete workerStore[path || version];
      if (objectURL) {
        self.URL.revokeObjectURL(objectURL);
      }
      worker.terminate();
    }
  }
}
function isId3Footer(data, offset) {
  if (offset + 10 <= data.length) {
    if (data[offset] === 51 && data[offset + 1] === 68 && data[offset + 2] === 73) {
      if (data[offset + 3] < 255 && data[offset + 4] < 255) {
        if (data[offset + 6] < 128 && data[offset + 7] < 128 && data[offset + 8] < 128 && data[offset + 9] < 128) {
          return true;
        }
      }
    }
  }
  return false;
}
function isId3Header(data, offset) {
  if (offset + 10 <= data.length) {
    if (data[offset] === 73 && data[offset + 1] === 68 && data[offset + 2] === 51) {
      if (data[offset + 3] < 255 && data[offset + 4] < 255) {
        if (data[offset + 6] < 128 && data[offset + 7] < 128 && data[offset + 8] < 128 && data[offset + 9] < 128) {
          return true;
        }
      }
    }
  }
  return false;
}
function readId3Size(data, offset) {
  let size = 0;
  size = (data[offset] & 127) << 21;
  size |= (data[offset + 1] & 127) << 14;
  size |= (data[offset + 2] & 127) << 7;
  size |= data[offset + 3] & 127;
  return size;
}
function getId3Data(data, offset) {
  const front = offset;
  let length = 0;
  while (isId3Header(data, offset)) {
    length += 10;
    const size = readId3Size(data, offset + 6);
    length += size;
    if (isId3Footer(data, offset + 10)) {
      length += 10;
    }
    offset += length;
  }
  if (length > 0) {
    return data.subarray(front, front + length);
  }
  return void 0;
}
function getAudioConfig(observer, data, offset, manifestCodec) {
  const adtsSamplingRates = [96e3, 88200, 64e3, 48e3, 44100, 32e3, 24e3, 22050, 16e3, 12e3, 11025, 8e3, 7350];
  const byte2 = data[offset + 2];
  const adtsSamplingIndex = byte2 >> 2 & 15;
  if (adtsSamplingIndex > 12) {
    const error = new Error(`invalid ADTS sampling index:${adtsSamplingIndex}`);
    observer.emit(Events.ERROR, Events.ERROR, {
      type: ErrorTypes.MEDIA_ERROR,
      details: ErrorDetails.FRAG_PARSING_ERROR,
      fatal: true,
      error,
      reason: error.message
    });
    return;
  }
  const adtsObjectType = (byte2 >> 6 & 3) + 1;
  const channelCount = data[offset + 3] >> 6 & 3 | (byte2 & 1) << 2;
  const codec = "mp4a.40." + adtsObjectType;
  const samplerate = adtsSamplingRates[adtsSamplingIndex];
  let aacSampleIndex = adtsSamplingIndex;
  if (adtsObjectType === 5 || adtsObjectType === 29) {
    aacSampleIndex -= 3;
  }
  const config = [adtsObjectType << 3 | (aacSampleIndex & 14) >> 1, (aacSampleIndex & 1) << 7 | channelCount << 3];
  logger.log(`manifest codec:${manifestCodec}, parsed codec:${codec}, channels:${channelCount}, rate:${samplerate} (ADTS object type:${adtsObjectType} sampling index:${adtsSamplingIndex})`);
  return {
    config,
    samplerate,
    channelCount,
    codec,
    parsedCodec: codec,
    manifestCodec
  };
}
function isHeaderPattern$1(data, offset) {
  return data[offset] === 255 && (data[offset + 1] & 246) === 240;
}
function getHeaderLength(data, offset) {
  return data[offset + 1] & 1 ? 7 : 9;
}
function getFullFrameLength(data, offset) {
  return (data[offset + 3] & 3) << 11 | data[offset + 4] << 3 | (data[offset + 5] & 224) >>> 5;
}
function canGetFrameLength(data, offset) {
  return offset + 5 < data.length;
}
function isHeader$1(data, offset) {
  return offset + 1 < data.length && isHeaderPattern$1(data, offset);
}
function canParse$1(data, offset) {
  return canGetFrameLength(data, offset) && isHeaderPattern$1(data, offset) && getFullFrameLength(data, offset) <= data.length - offset;
}
function probe$1(data, offset) {
  if (isHeader$1(data, offset)) {
    const headerLength = getHeaderLength(data, offset);
    if (offset + headerLength >= data.length) {
      return false;
    }
    const frameLength = getFullFrameLength(data, offset);
    if (frameLength <= headerLength) {
      return false;
    }
    const newOffset = offset + frameLength;
    return newOffset === data.length || isHeader$1(data, newOffset);
  }
  return false;
}
function initTrackConfig(track, observer, data, offset, audioCodec) {
  if (!track.samplerate) {
    const config = getAudioConfig(observer, data, offset, audioCodec);
    if (!config) {
      return;
    }
    _extends(track, config);
  }
}
function getFrameDuration(samplerate) {
  return 1024 * 9e4 / samplerate;
}
function parseFrameHeader(data, offset) {
  const headerLength = getHeaderLength(data, offset);
  if (offset + headerLength <= data.length) {
    const frameLength = getFullFrameLength(data, offset) - headerLength;
    if (frameLength > 0) {
      return {
        headerLength,
        frameLength
      };
    }
  }
}
function appendFrame$2(track, data, offset, pts, frameIndex) {
  const frameDuration = getFrameDuration(track.samplerate);
  const stamp = pts + frameIndex * frameDuration;
  const header = parseFrameHeader(data, offset);
  let unit;
  if (header) {
    const {
      frameLength,
      headerLength
    } = header;
    const _length = headerLength + frameLength;
    const missing = Math.max(0, offset + _length - data.length);
    if (missing) {
      unit = new Uint8Array(_length - headerLength);
      unit.set(data.subarray(offset + headerLength, data.length), 0);
    } else {
      unit = data.subarray(offset + headerLength, offset + _length);
    }
    const _sample = {
      unit,
      pts: stamp
    };
    if (!missing) {
      track.samples.push(_sample);
    }
    return {
      sample: _sample,
      length: _length,
      missing
    };
  }
  const length = data.length - offset;
  unit = new Uint8Array(length);
  unit.set(data.subarray(offset, data.length), 0);
  const sample = {
    unit,
    pts: stamp
  };
  return {
    sample,
    length,
    missing: -1
  };
}
function canParseId3(data, offset) {
  return isId3Header(data, offset) && readId3Size(data, offset + 6) + 10 <= data.length - offset;
}
function toArrayBuffer(view2) {
  if (view2 instanceof ArrayBuffer) {
    return view2;
  } else {
    if (view2.byteOffset == 0 && view2.byteLength == view2.buffer.byteLength) {
      return view2.buffer;
    }
    return new Uint8Array(view2).buffer;
  }
}
function toUint8(data, offset = 0, length = Infinity) {
  return view(data, offset, length, Uint8Array);
}
function view(data, offset, length, Type) {
  const buffer = unsafeGetArrayBuffer(data);
  let bytesPerElement = 1;
  if ("BYTES_PER_ELEMENT" in Type) {
    bytesPerElement = Type.BYTES_PER_ELEMENT;
  }
  const dataOffset = isArrayBufferView(data) ? data.byteOffset : 0;
  const dataEnd = (dataOffset + data.byteLength) / bytesPerElement;
  const rawStart = (dataOffset + offset) / bytesPerElement;
  const start = Math.floor(Math.max(0, Math.min(rawStart, dataEnd)));
  const end = Math.floor(Math.min(start + Math.max(length, 0), dataEnd));
  return new Type(buffer, start, end - start);
}
function unsafeGetArrayBuffer(view2) {
  if (view2 instanceof ArrayBuffer) {
    return view2;
  } else {
    return view2.buffer;
  }
}
function isArrayBufferView(obj) {
  return obj && obj.buffer instanceof ArrayBuffer && obj.byteLength !== void 0 && obj.byteOffset !== void 0;
}
function decodeId3ImageFrame(frame) {
  const metadataFrame = {
    key: frame.type,
    description: "",
    data: "",
    mimeType: null,
    pictureType: null
  };
  const utf8Encoding = 3;
  if (frame.size < 2) {
    return void 0;
  }
  if (frame.data[0] !== utf8Encoding) {
    console.log("Ignore frame with unrecognized character encoding");
    return void 0;
  }
  const mimeTypeEndIndex = frame.data.subarray(1).indexOf(0);
  if (mimeTypeEndIndex === -1) {
    return void 0;
  }
  const mimeType = utf8ArrayToStr(toUint8(frame.data, 1, mimeTypeEndIndex));
  const pictureType = frame.data[2 + mimeTypeEndIndex];
  const descriptionEndIndex = frame.data.subarray(3 + mimeTypeEndIndex).indexOf(0);
  if (descriptionEndIndex === -1) {
    return void 0;
  }
  const description = utf8ArrayToStr(toUint8(frame.data, 3 + mimeTypeEndIndex, descriptionEndIndex));
  let data;
  if (mimeType === "-->") {
    data = utf8ArrayToStr(toUint8(frame.data, 4 + mimeTypeEndIndex + descriptionEndIndex));
  } else {
    data = toArrayBuffer(frame.data.subarray(4 + mimeTypeEndIndex + descriptionEndIndex));
  }
  metadataFrame.mimeType = mimeType;
  metadataFrame.pictureType = pictureType;
  metadataFrame.description = description;
  metadataFrame.data = data;
  return metadataFrame;
}
function decodeId3PrivFrame(frame) {
  if (frame.size < 2) {
    return void 0;
  }
  const owner = utf8ArrayToStr(frame.data, true);
  const privateData = new Uint8Array(frame.data.subarray(owner.length + 1));
  return {
    key: frame.type,
    info: owner,
    data: privateData.buffer
  };
}
function decodeId3TextFrame(frame) {
  if (frame.size < 2) {
    return void 0;
  }
  if (frame.type === "TXXX") {
    let index = 1;
    const description = utf8ArrayToStr(frame.data.subarray(index), true);
    index += description.length + 1;
    const value = utf8ArrayToStr(frame.data.subarray(index));
    return {
      key: frame.type,
      info: description,
      data: value
    };
  }
  const text = utf8ArrayToStr(frame.data.subarray(1));
  return {
    key: frame.type,
    info: "",
    data: text
  };
}
function decodeId3UrlFrame(frame) {
  if (frame.type === "WXXX") {
    if (frame.size < 2) {
      return void 0;
    }
    let index = 1;
    const description = utf8ArrayToStr(frame.data.subarray(index), true);
    index += description.length + 1;
    const value = utf8ArrayToStr(frame.data.subarray(index));
    return {
      key: frame.type,
      info: description,
      data: value
    };
  }
  const url = utf8ArrayToStr(frame.data);
  return {
    key: frame.type,
    info: "",
    data: url
  };
}
function decodeId3Frame(frame) {
  if (frame.type === "PRIV") {
    return decodeId3PrivFrame(frame);
  } else if (frame.type[0] === "W") {
    return decodeId3UrlFrame(frame);
  } else if (frame.type === "APIC") {
    return decodeId3ImageFrame(frame);
  }
  return decodeId3TextFrame(frame);
}
function getId3FrameData(data) {
  const type = String.fromCharCode(data[0], data[1], data[2], data[3]);
  const size = readId3Size(data, 4);
  const offset = 10;
  return {
    type,
    size,
    data: data.subarray(offset, offset + size)
  };
}
var HEADER_FOOTER_SIZE = 10;
var FRAME_SIZE = 10;
function getId3Frames(id3Data) {
  let offset = 0;
  const frames = [];
  while (isId3Header(id3Data, offset)) {
    const size = readId3Size(id3Data, offset + 6);
    if (id3Data[offset + 5] >> 6 & 1) {
      offset += HEADER_FOOTER_SIZE;
    }
    offset += HEADER_FOOTER_SIZE;
    const end = offset + size;
    while (offset + FRAME_SIZE < end) {
      const frameData = getId3FrameData(id3Data.subarray(offset));
      const frame = decodeId3Frame(frameData);
      if (frame) {
        frames.push(frame);
      }
      offset += frameData.size + HEADER_FOOTER_SIZE;
    }
    if (isId3Footer(id3Data, offset)) {
      offset += HEADER_FOOTER_SIZE;
    }
  }
  return frames;
}
function isId3TimestampFrame(frame) {
  return frame && frame.key === "PRIV" && frame.info === "com.apple.streaming.transportStreamTimestamp";
}
function readId3Timestamp(timeStampFrame) {
  if (timeStampFrame.data.byteLength === 8) {
    const data = new Uint8Array(timeStampFrame.data);
    const pts33Bit = data[3] & 1;
    let timestamp = (data[4] << 23) + (data[5] << 15) + (data[6] << 7) + data[7];
    timestamp /= 45;
    if (pts33Bit) {
      timestamp += 4772185884e-2;
    }
    return Math.round(timestamp);
  }
  return void 0;
}
function getId3Timestamp(data) {
  const frames = getId3Frames(data);
  for (let i = 0; i < frames.length; i++) {
    const frame = frames[i];
    if (isId3TimestampFrame(frame)) {
      return readId3Timestamp(frame);
    }
  }
  return void 0;
}
var MetadataSchema = function(MetadataSchema2) {
  MetadataSchema2["audioId3"] = "org.id3";
  MetadataSchema2["dateRange"] = "com.apple.quicktime.HLS";
  MetadataSchema2["emsg"] = "https://aomedia.org/emsg/ID3";
  MetadataSchema2["misbklv"] = "urn:misb:KLV:bin:1910.1";
  return MetadataSchema2;
}({});
function dummyTrack(type = "", inputTimeScale = 9e4) {
  return {
    type,
    id: -1,
    pid: -1,
    inputTimeScale,
    sequenceNumber: -1,
    samples: [],
    dropped: 0
  };
}
var BaseAudioDemuxer = class {
  constructor() {
    this._audioTrack = void 0;
    this._id3Track = void 0;
    this.frameIndex = 0;
    this.cachedData = null;
    this.basePTS = null;
    this.initPTS = null;
    this.lastPTS = null;
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    this._id3Track = {
      type: "id3",
      id: 3,
      pid: -1,
      inputTimeScale: 9e4,
      sequenceNumber: 0,
      samples: [],
      dropped: 0
    };
  }
  resetTimeStamp(deaultTimestamp) {
    this.initPTS = deaultTimestamp;
    this.resetContiguity();
  }
  resetContiguity() {
    this.basePTS = null;
    this.lastPTS = null;
    this.frameIndex = 0;
  }
  canParse(data, offset) {
    return false;
  }
  appendFrame(track, data, offset) {
  }
  demux(data, timeOffset) {
    if (this.cachedData) {
      data = appendUint8Array(this.cachedData, data);
      this.cachedData = null;
    }
    let id3Data = getId3Data(data, 0);
    let offset = id3Data ? id3Data.length : 0;
    let lastDataIndex;
    const track = this._audioTrack;
    const id3Track = this._id3Track;
    const timestamp = id3Data ? getId3Timestamp(id3Data) : void 0;
    const length = data.length;
    if (this.basePTS === null || this.frameIndex === 0 && isFiniteNumber(timestamp)) {
      this.basePTS = initPTSFn(timestamp, timeOffset, this.initPTS);
      this.lastPTS = this.basePTS;
    }
    if (this.lastPTS === null) {
      this.lastPTS = this.basePTS;
    }
    if (id3Data && id3Data.length > 0) {
      id3Track.samples.push({
        pts: this.lastPTS,
        dts: this.lastPTS,
        data: id3Data,
        type: MetadataSchema.audioId3,
        duration: Number.POSITIVE_INFINITY
      });
    }
    while (offset < length) {
      if (this.canParse(data, offset)) {
        const frame = this.appendFrame(track, data, offset);
        if (frame) {
          this.frameIndex++;
          this.lastPTS = frame.sample.pts;
          offset += frame.length;
          lastDataIndex = offset;
        } else {
          offset = length;
        }
      } else if (canParseId3(data, offset)) {
        id3Data = getId3Data(data, offset);
        id3Track.samples.push({
          pts: this.lastPTS,
          dts: this.lastPTS,
          data: id3Data,
          type: MetadataSchema.audioId3,
          duration: Number.POSITIVE_INFINITY
        });
        offset += id3Data.length;
        lastDataIndex = offset;
      } else {
        offset++;
      }
      if (offset === length && lastDataIndex !== length) {
        const partialData = data.slice(lastDataIndex);
        if (this.cachedData) {
          this.cachedData = appendUint8Array(this.cachedData, partialData);
        } else {
          this.cachedData = partialData;
        }
      }
    }
    return {
      audioTrack: track,
      videoTrack: dummyTrack(),
      id3Track,
      textTrack: dummyTrack()
    };
  }
  demuxSampleAes(data, keyData, timeOffset) {
    return Promise.reject(new Error(`[${this}] This demuxer does not support Sample-AES decryption`));
  }
  flush(timeOffset) {
    const cachedData = this.cachedData;
    if (cachedData) {
      this.cachedData = null;
      this.demux(cachedData, 0);
    }
    return {
      audioTrack: this._audioTrack,
      videoTrack: dummyTrack(),
      id3Track: this._id3Track,
      textTrack: dummyTrack()
    };
  }
  destroy() {
    this.cachedData = null;
    this._audioTrack = this._id3Track = void 0;
  }
};
var initPTSFn = (timestamp, timeOffset, initPTS) => {
  if (isFiniteNumber(timestamp)) {
    return timestamp * 90;
  }
  const init90kHz = initPTS ? initPTS.baseTime * 9e4 / initPTS.timescale : 0;
  return timeOffset * 9e4 + init90kHz;
};
var chromeVersion$1 = null;
var BitratesMap = [32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160];
var SamplingRateMap = [44100, 48e3, 32e3, 22050, 24e3, 16e3, 11025, 12e3, 8e3];
var SamplesCoefficients = [
  [
    0,
    72,
    144,
    12
  ],
  [
    0,
    0,
    0,
    0
  ],
  [
    0,
    72,
    144,
    12
  ],
  [
    0,
    144,
    144,
    12
  ]
];
var BytesInSlot = [
  0,
  1,
  1,
  4
];
function appendFrame$1(track, data, offset, pts, frameIndex) {
  if (offset + 24 > data.length) {
    return;
  }
  const header = parseHeader(data, offset);
  if (header && offset + header.frameLength <= data.length) {
    const frameDuration = header.samplesPerFrame * 9e4 / header.sampleRate;
    const stamp = pts + frameIndex * frameDuration;
    const sample = {
      unit: data.subarray(offset, offset + header.frameLength),
      pts: stamp,
      dts: stamp
    };
    track.config = [];
    track.channelCount = header.channelCount;
    track.samplerate = header.sampleRate;
    track.samples.push(sample);
    return {
      sample,
      length: header.frameLength,
      missing: 0
    };
  }
}
function parseHeader(data, offset) {
  const mpegVersion = data[offset + 1] >> 3 & 3;
  const mpegLayer = data[offset + 1] >> 1 & 3;
  const bitRateIndex = data[offset + 2] >> 4 & 15;
  const sampleRateIndex = data[offset + 2] >> 2 & 3;
  if (mpegVersion !== 1 && bitRateIndex !== 0 && bitRateIndex !== 15 && sampleRateIndex !== 3) {
    const paddingBit = data[offset + 2] >> 1 & 1;
    const channelMode = data[offset + 3] >> 6;
    const columnInBitrates = mpegVersion === 3 ? 3 - mpegLayer : mpegLayer === 3 ? 3 : 4;
    const bitRate = BitratesMap[columnInBitrates * 14 + bitRateIndex - 1] * 1e3;
    const columnInSampleRates = mpegVersion === 3 ? 0 : mpegVersion === 2 ? 1 : 2;
    const sampleRate = SamplingRateMap[columnInSampleRates * 3 + sampleRateIndex];
    const channelCount = channelMode === 3 ? 1 : 2;
    const sampleCoefficient = SamplesCoefficients[mpegVersion][mpegLayer];
    const bytesInSlot = BytesInSlot[mpegLayer];
    const samplesPerFrame = sampleCoefficient * 8 * bytesInSlot;
    const frameLength = Math.floor(sampleCoefficient * bitRate / sampleRate + paddingBit) * bytesInSlot;
    if (chromeVersion$1 === null) {
      const userAgent = navigator.userAgent || "";
      const result = userAgent.match(/Chrome\/(\d+)/i);
      chromeVersion$1 = result ? parseInt(result[1]) : 0;
    }
    const needChromeFix = !!chromeVersion$1 && chromeVersion$1 <= 87;
    if (needChromeFix && mpegLayer === 2 && bitRate >= 224e3 && channelMode === 0) {
      data[offset + 3] = data[offset + 3] | 128;
    }
    return {
      sampleRate,
      channelCount,
      frameLength,
      samplesPerFrame
    };
  }
}
function isHeaderPattern(data, offset) {
  return data[offset] === 255 && (data[offset + 1] & 224) === 224 && (data[offset + 1] & 6) !== 0;
}
function isHeader(data, offset) {
  return offset + 1 < data.length && isHeaderPattern(data, offset);
}
function canParse(data, offset) {
  const headerSize = 4;
  return isHeaderPattern(data, offset) && headerSize <= data.length - offset;
}
function probe(data, offset) {
  if (offset + 1 < data.length && isHeaderPattern(data, offset)) {
    const headerLength = 4;
    const header = parseHeader(data, offset);
    let frameLength = headerLength;
    if (header != null && header.frameLength) {
      frameLength = header.frameLength;
    }
    const newOffset = offset + frameLength;
    return newOffset === data.length || isHeader(data, newOffset);
  }
  return false;
}
var AACDemuxer = class extends BaseAudioDemuxer {
  constructor(observer, config) {
    super();
    this.observer = void 0;
    this.config = void 0;
    this.observer = observer;
    this.config = config;
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    super.resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration);
    this._audioTrack = {
      container: "audio/adts",
      type: "audio",
      id: 2,
      pid: -1,
      sequenceNumber: 0,
      segmentCodec: "aac",
      samples: [],
      manifestCodec: audioCodec,
      duration: trackDuration,
      inputTimeScale: 9e4,
      dropped: 0
    };
  }
  static probe(data, logger2) {
    if (!data) {
      return false;
    }
    const id3Data = getId3Data(data, 0);
    let offset = (id3Data == null ? void 0 : id3Data.length) || 0;
    if (probe(data, offset)) {
      return false;
    }
    for (let length = data.length; offset < length; offset++) {
      if (probe$1(data, offset)) {
        logger2.log("ADTS sync word found !");
        return true;
      }
    }
    return false;
  }
  canParse(data, offset) {
    return canParse$1(data, offset);
  }
  appendFrame(track, data, offset) {
    initTrackConfig(track, this.observer, data, offset, track.manifestCodec);
    const frame = appendFrame$2(track, data, offset, this.basePTS, this.frameIndex);
    if (frame && frame.missing === 0) {
      return frame;
    }
  }
};
var getAudioBSID = (data, offset) => {
  let bsid = 0;
  let numBits = 5;
  offset += numBits;
  const temp = new Uint32Array(1);
  const mask = new Uint32Array(1);
  const byte = new Uint8Array(1);
  while (numBits > 0) {
    byte[0] = data[offset];
    const bits = Math.min(numBits, 8);
    const shift = 8 - bits;
    mask[0] = 4278190080 >>> 24 + shift << shift;
    temp[0] = (byte[0] & mask[0]) >> shift;
    bsid = !bsid ? temp[0] : bsid << bits | temp[0];
    offset += 1;
    numBits -= bits;
  }
  return bsid;
};
var AC3Demuxer = class extends BaseAudioDemuxer {
  constructor(observer) {
    super();
    this.observer = void 0;
    this.observer = observer;
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    super.resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration);
    this._audioTrack = {
      container: "audio/ac-3",
      type: "audio",
      id: 2,
      pid: -1,
      sequenceNumber: 0,
      segmentCodec: "ac3",
      samples: [],
      manifestCodec: audioCodec,
      duration: trackDuration,
      inputTimeScale: 9e4,
      dropped: 0
    };
  }
  canParse(data, offset) {
    return offset + 64 < data.length;
  }
  appendFrame(track, data, offset) {
    const frameLength = appendFrame(track, data, offset, this.basePTS, this.frameIndex);
    if (frameLength !== -1) {
      const sample = track.samples[track.samples.length - 1];
      return {
        sample,
        length: frameLength,
        missing: 0
      };
    }
  }
  static probe(data) {
    if (!data) {
      return false;
    }
    const id3Data = getId3Data(data, 0);
    if (!id3Data) {
      return false;
    }
    const offset = id3Data.length;
    if (data[offset] === 11 && data[offset + 1] === 119 && getId3Timestamp(id3Data) !== void 0 && getAudioBSID(data, offset) < 16) {
      return true;
    }
    return false;
  }
};
function appendFrame(track, data, start, pts, frameIndex) {
  if (start + 8 > data.length) {
    return -1;
  }
  if (data[start] !== 11 || data[start + 1] !== 119) {
    return -1;
  }
  const samplingRateCode = data[start + 4] >> 6;
  if (samplingRateCode >= 3) {
    return -1;
  }
  const samplingRateMap = [48e3, 44100, 32e3];
  const sampleRate = samplingRateMap[samplingRateCode];
  const frameSizeCode = data[start + 4] & 63;
  const frameSizeMap = [64, 69, 96, 64, 70, 96, 80, 87, 120, 80, 88, 120, 96, 104, 144, 96, 105, 144, 112, 121, 168, 112, 122, 168, 128, 139, 192, 128, 140, 192, 160, 174, 240, 160, 175, 240, 192, 208, 288, 192, 209, 288, 224, 243, 336, 224, 244, 336, 256, 278, 384, 256, 279, 384, 320, 348, 480, 320, 349, 480, 384, 417, 576, 384, 418, 576, 448, 487, 672, 448, 488, 672, 512, 557, 768, 512, 558, 768, 640, 696, 960, 640, 697, 960, 768, 835, 1152, 768, 836, 1152, 896, 975, 1344, 896, 976, 1344, 1024, 1114, 1536, 1024, 1115, 1536, 1152, 1253, 1728, 1152, 1254, 1728, 1280, 1393, 1920, 1280, 1394, 1920];
  const frameLength = frameSizeMap[frameSizeCode * 3 + samplingRateCode] * 2;
  if (start + frameLength > data.length) {
    return -1;
  }
  const channelMode = data[start + 6] >> 5;
  let skipCount = 0;
  if (channelMode === 2) {
    skipCount += 2;
  } else {
    if (channelMode & 1 && channelMode !== 1) {
      skipCount += 2;
    }
    if (channelMode & 4) {
      skipCount += 2;
    }
  }
  const lfeon = (data[start + 6] << 8 | data[start + 7]) >> 12 - skipCount & 1;
  const channelsMap = [2, 1, 2, 3, 3, 4, 4, 5];
  const channelCount = channelsMap[channelMode] + lfeon;
  const bsid = data[start + 5] >> 3;
  const bsmod = data[start + 5] & 7;
  const config = new Uint8Array([samplingRateCode << 6 | bsid << 1 | bsmod >> 2, (bsmod & 3) << 6 | channelMode << 3 | lfeon << 2 | frameSizeCode >> 4, frameSizeCode << 4 & 224]);
  const frameDuration = 1536 / sampleRate * 9e4;
  const stamp = pts + frameIndex * frameDuration;
  const unit = data.subarray(start, start + frameLength);
  track.config = config;
  track.channelCount = channelCount;
  track.samplerate = sampleRate;
  track.samples.push({
    unit,
    pts: stamp
  });
  return frameLength;
}
var MP3Demuxer = class extends BaseAudioDemuxer {
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    super.resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration);
    this._audioTrack = {
      container: "audio/mpeg",
      type: "audio",
      id: 2,
      pid: -1,
      sequenceNumber: 0,
      segmentCodec: "mp3",
      samples: [],
      manifestCodec: audioCodec,
      duration: trackDuration,
      inputTimeScale: 9e4,
      dropped: 0
    };
  }
  static probe(data) {
    if (!data) {
      return false;
    }
    const id3Data = getId3Data(data, 0);
    let offset = (id3Data == null ? void 0 : id3Data.length) || 0;
    if (id3Data && data[offset] === 11 && data[offset + 1] === 119 && getId3Timestamp(id3Data) !== void 0 && getAudioBSID(data, offset) <= 16) {
      return false;
    }
    for (let length = data.length; offset < length; offset++) {
      if (probe(data, offset)) {
        logger.log("MPEG Audio sync word found !");
        return true;
      }
    }
    return false;
  }
  canParse(data, offset) {
    return canParse(data, offset);
  }
  appendFrame(track, data, offset) {
    if (this.basePTS === null) {
      return;
    }
    return appendFrame$1(track, data, offset, this.basePTS, this.frameIndex);
  }
};
var emsgSchemePattern = /\/emsg[-/]ID3/i;
var MP4Demuxer = class {
  constructor(observer, config) {
    this.remainderData = null;
    this.timeOffset = 0;
    this.config = void 0;
    this.videoTrack = void 0;
    this.audioTrack = void 0;
    this.id3Track = void 0;
    this.txtTrack = void 0;
    this.config = config;
  }
  resetTimeStamp() {
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    const videoTrack = this.videoTrack = dummyTrack("video", 1);
    const audioTrack = this.audioTrack = dummyTrack("audio", 1);
    const captionTrack = this.txtTrack = dummyTrack("text", 1);
    this.id3Track = dummyTrack("id3", 1);
    this.timeOffset = 0;
    if (!(initSegment != null && initSegment.byteLength)) {
      return;
    }
    const initData = parseInitSegment(initSegment);
    if (initData.video) {
      const {
        id,
        timescale,
        codec,
        supplemental
      } = initData.video;
      videoTrack.id = id;
      videoTrack.timescale = captionTrack.timescale = timescale;
      videoTrack.codec = codec;
      videoTrack.supplemental = supplemental;
    }
    if (initData.audio) {
      const {
        id,
        timescale,
        codec
      } = initData.audio;
      audioTrack.id = id;
      audioTrack.timescale = timescale;
      audioTrack.codec = codec;
    }
    captionTrack.id = RemuxerTrackIdConfig.text;
    videoTrack.sampleDuration = 0;
    videoTrack.duration = audioTrack.duration = trackDuration;
  }
  resetContiguity() {
    this.remainderData = null;
  }
  static probe(data) {
    return hasMoofData(data);
  }
  demux(data, timeOffset) {
    this.timeOffset = timeOffset;
    let videoSamples = data;
    const videoTrack = this.videoTrack;
    const textTrack = this.txtTrack;
    if (this.config.progressive) {
      if (this.remainderData) {
        videoSamples = appendUint8Array(this.remainderData, data);
      }
      const segmentedData = segmentValidRange(videoSamples);
      this.remainderData = segmentedData.remainder;
      videoTrack.samples = segmentedData.valid || new Uint8Array();
    } else {
      videoTrack.samples = videoSamples;
    }
    const id3Track = this.extractID3Track(videoTrack, timeOffset);
    textTrack.samples = parseSamples(timeOffset, videoTrack);
    return {
      videoTrack,
      audioTrack: this.audioTrack,
      id3Track,
      textTrack: this.txtTrack
    };
  }
  flush() {
    const timeOffset = this.timeOffset;
    const videoTrack = this.videoTrack;
    const textTrack = this.txtTrack;
    videoTrack.samples = this.remainderData || new Uint8Array();
    this.remainderData = null;
    const id3Track = this.extractID3Track(videoTrack, this.timeOffset);
    textTrack.samples = parseSamples(timeOffset, videoTrack);
    return {
      videoTrack,
      audioTrack: dummyTrack(),
      id3Track,
      textTrack: dummyTrack()
    };
  }
  extractID3Track(videoTrack, timeOffset) {
    const id3Track = this.id3Track;
    if (videoTrack.samples.length) {
      const emsgs = findBox(videoTrack.samples, ["emsg"]);
      if (emsgs) {
        emsgs.forEach((data) => {
          const emsgInfo = parseEmsg(data);
          if (emsgSchemePattern.test(emsgInfo.schemeIdUri)) {
            const pts = getEmsgStartTime(emsgInfo, timeOffset);
            let duration = emsgInfo.eventDuration === 4294967295 ? Number.POSITIVE_INFINITY : emsgInfo.eventDuration / emsgInfo.timeScale;
            if (duration <= 1e-3) {
              duration = Number.POSITIVE_INFINITY;
            }
            const payload = emsgInfo.payload;
            id3Track.samples.push({
              data: payload,
              len: payload.byteLength,
              dts: pts,
              pts,
              type: MetadataSchema.emsg,
              duration
            });
          } else if (this.config.enableEmsgKLVMetadata && emsgInfo.schemeIdUri.startsWith("urn:misb:KLV:bin:1910.1")) {
            const pts = getEmsgStartTime(emsgInfo, timeOffset);
            id3Track.samples.push({
              data: emsgInfo.payload,
              len: emsgInfo.payload.byteLength,
              dts: pts,
              pts,
              type: MetadataSchema.misbklv,
              duration: Number.POSITIVE_INFINITY
            });
          }
        });
      }
    }
    return id3Track;
  }
  demuxSampleAes(data, keyData, timeOffset) {
    return Promise.reject(new Error("The MP4 demuxer does not support SAMPLE-AES decryption"));
  }
  destroy() {
    this.config = null;
    this.remainderData = null;
    this.videoTrack = this.audioTrack = this.id3Track = this.txtTrack = void 0;
  }
};
function getEmsgStartTime(emsgInfo, timeOffset) {
  return isFiniteNumber(emsgInfo.presentationTime) ? emsgInfo.presentationTime / emsgInfo.timeScale : timeOffset + emsgInfo.presentationTimeDelta / emsgInfo.timeScale;
}
var SampleAesDecrypter = class {
  constructor(observer, config, keyData) {
    this.keyData = void 0;
    this.decrypter = void 0;
    this.keyData = keyData;
    this.decrypter = new Decrypter(config, {
      removePKCS7Padding: false
    });
  }
  decryptBuffer(encryptedData) {
    return this.decrypter.decrypt(encryptedData, this.keyData.key.buffer, this.keyData.iv.buffer, DecrypterAesMode.cbc);
  }
  decryptAacSample(samples, sampleIndex, callback) {
    const curUnit = samples[sampleIndex].unit;
    if (curUnit.length <= 16) {
      return;
    }
    const encryptedData = curUnit.subarray(16, curUnit.length - curUnit.length % 16);
    const encryptedBuffer = encryptedData.buffer.slice(encryptedData.byteOffset, encryptedData.byteOffset + encryptedData.length);
    this.decryptBuffer(encryptedBuffer).then((decryptedBuffer) => {
      const decryptedData = new Uint8Array(decryptedBuffer);
      curUnit.set(decryptedData, 16);
      if (!this.decrypter.isSync()) {
        this.decryptAacSamples(samples, sampleIndex + 1, callback);
      }
    });
  }
  decryptAacSamples(samples, sampleIndex, callback) {
    for (; ; sampleIndex++) {
      if (sampleIndex >= samples.length) {
        callback();
        return;
      }
      if (samples[sampleIndex].unit.length < 32) {
        continue;
      }
      this.decryptAacSample(samples, sampleIndex, callback);
      if (!this.decrypter.isSync()) {
        return;
      }
    }
  }
  getAvcEncryptedData(decodedData) {
    const encryptedDataLen = Math.floor((decodedData.length - 48) / 160) * 16 + 16;
    const encryptedData = new Int8Array(encryptedDataLen);
    let outputPos = 0;
    for (let inputPos = 32; inputPos < decodedData.length - 16; inputPos += 160, outputPos += 16) {
      encryptedData.set(decodedData.subarray(inputPos, inputPos + 16), outputPos);
    }
    return encryptedData;
  }
  getAvcDecryptedUnit(decodedData, decryptedData) {
    const uint8DecryptedData = new Uint8Array(decryptedData);
    let inputPos = 0;
    for (let outputPos = 32; outputPos < decodedData.length - 16; outputPos += 160, inputPos += 16) {
      decodedData.set(uint8DecryptedData.subarray(inputPos, inputPos + 16), outputPos);
    }
    return decodedData;
  }
  decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit) {
    const decodedData = discardEPB(curUnit.data);
    const encryptedData = this.getAvcEncryptedData(decodedData);
    this.decryptBuffer(encryptedData.buffer).then((decryptedBuffer) => {
      curUnit.data = this.getAvcDecryptedUnit(decodedData, decryptedBuffer);
      if (!this.decrypter.isSync()) {
        this.decryptAvcSamples(samples, sampleIndex, unitIndex + 1, callback);
      }
    });
  }
  decryptAvcSamples(samples, sampleIndex, unitIndex, callback) {
    if (samples instanceof Uint8Array) {
      throw new Error("Cannot decrypt samples of type Uint8Array");
    }
    for (; ; sampleIndex++, unitIndex = 0) {
      if (sampleIndex >= samples.length) {
        callback();
        return;
      }
      const curUnits = samples[sampleIndex].units;
      for (; ; unitIndex++) {
        if (unitIndex >= curUnits.length) {
          break;
        }
        const curUnit = curUnits[unitIndex];
        if (curUnit.data.length <= 48 || curUnit.type !== 1 && curUnit.type !== 5) {
          continue;
        }
        this.decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit);
        if (!this.decrypter.isSync()) {
          return;
        }
      }
    }
  }
};
var BaseVideoParser = class {
  constructor() {
    this.VideoSample = null;
  }
  createVideoSample(key, pts, dts) {
    return {
      key,
      frame: false,
      pts,
      dts,
      units: [],
      length: 0
    };
  }
  getLastNalUnit(samples) {
    var _VideoSample;
    let VideoSample = this.VideoSample;
    let lastUnit;
    if (!VideoSample || VideoSample.units.length === 0) {
      VideoSample = samples[samples.length - 1];
    }
    if ((_VideoSample = VideoSample) != null && _VideoSample.units) {
      const units = VideoSample.units;
      lastUnit = units[units.length - 1];
    }
    return lastUnit;
  }
  pushAccessUnit(VideoSample, videoTrack) {
    if (VideoSample.units.length && VideoSample.frame) {
      if (VideoSample.pts === void 0) {
        const samples = videoTrack.samples;
        const nbSamples = samples.length;
        if (nbSamples) {
          const lastSample = samples[nbSamples - 1];
          VideoSample.pts = lastSample.pts;
          VideoSample.dts = lastSample.dts;
        } else {
          videoTrack.dropped++;
          return;
        }
      }
      videoTrack.samples.push(VideoSample);
    }
  }
  parseNALu(track, array, endOfSegment) {
    const len = array.byteLength;
    let state = track.naluState || 0;
    const lastState = state;
    const units = [];
    let i = 0;
    let value;
    let overflow;
    let unitType;
    let lastUnitStart = -1;
    let lastUnitType = 0;
    if (state === -1) {
      lastUnitStart = 0;
      lastUnitType = this.getNALuType(array, 0);
      state = 0;
      i = 1;
    }
    while (i < len) {
      value = array[i++];
      if (!state) {
        state = value ? 0 : 1;
        continue;
      }
      if (state === 1) {
        state = value ? 0 : 2;
        continue;
      }
      if (!value) {
        state = 3;
      } else if (value === 1) {
        overflow = i - state - 1;
        if (lastUnitStart >= 0) {
          const unit = {
            data: array.subarray(lastUnitStart, overflow),
            type: lastUnitType
          };
          units.push(unit);
        } else {
          const lastUnit = this.getLastNalUnit(track.samples);
          if (lastUnit) {
            if (lastState && i <= 4 - lastState) {
              if (lastUnit.state) {
                lastUnit.data = lastUnit.data.subarray(0, lastUnit.data.byteLength - lastState);
              }
            }
            if (overflow > 0) {
              lastUnit.data = appendUint8Array(lastUnit.data, array.subarray(0, overflow));
              lastUnit.state = 0;
            }
          }
        }
        if (i < len) {
          unitType = this.getNALuType(array, i);
          lastUnitStart = i;
          lastUnitType = unitType;
          state = 0;
        } else {
          state = -1;
        }
      } else {
        state = 0;
      }
    }
    if (lastUnitStart >= 0 && state >= 0) {
      const unit = {
        data: array.subarray(lastUnitStart, len),
        type: lastUnitType,
        state
      };
      units.push(unit);
    }
    if (units.length === 0) {
      const lastUnit = this.getLastNalUnit(track.samples);
      if (lastUnit) {
        lastUnit.data = appendUint8Array(lastUnit.data, array);
      }
    }
    track.naluState = state;
    return units;
  }
};
var ExpGolomb = class {
  constructor(data) {
    this.data = void 0;
    this.bytesAvailable = void 0;
    this.word = void 0;
    this.bitsAvailable = void 0;
    this.data = data;
    this.bytesAvailable = data.byteLength;
    this.word = 0;
    this.bitsAvailable = 0;
  }
  loadWord() {
    const data = this.data;
    const bytesAvailable = this.bytesAvailable;
    const position = data.byteLength - bytesAvailable;
    const workingBytes = new Uint8Array(4);
    const availableBytes = Math.min(4, bytesAvailable);
    if (availableBytes === 0) {
      throw new Error("no bytes available");
    }
    workingBytes.set(data.subarray(position, position + availableBytes));
    this.word = new DataView(workingBytes.buffer).getUint32(0);
    this.bitsAvailable = availableBytes * 8;
    this.bytesAvailable -= availableBytes;
  }
  skipBits(count) {
    let skipBytes;
    count = Math.min(count, this.bytesAvailable * 8 + this.bitsAvailable);
    if (this.bitsAvailable > count) {
      this.word <<= count;
      this.bitsAvailable -= count;
    } else {
      count -= this.bitsAvailable;
      skipBytes = count >> 3;
      count -= skipBytes << 3;
      this.bytesAvailable -= skipBytes;
      this.loadWord();
      this.word <<= count;
      this.bitsAvailable -= count;
    }
  }
  readBits(size) {
    let bits = Math.min(this.bitsAvailable, size);
    const valu = this.word >>> 32 - bits;
    if (size > 32) {
      logger.error("Cannot read more than 32 bits at a time");
    }
    this.bitsAvailable -= bits;
    if (this.bitsAvailable > 0) {
      this.word <<= bits;
    } else if (this.bytesAvailable > 0) {
      this.loadWord();
    } else {
      throw new Error("no bits available");
    }
    bits = size - bits;
    if (bits > 0 && this.bitsAvailable) {
      return valu << bits | this.readBits(bits);
    } else {
      return valu;
    }
  }
  skipLZ() {
    let leadingZeroCount;
    for (leadingZeroCount = 0; leadingZeroCount < this.bitsAvailable; ++leadingZeroCount) {
      if ((this.word & 2147483648 >>> leadingZeroCount) !== 0) {
        this.word <<= leadingZeroCount;
        this.bitsAvailable -= leadingZeroCount;
        return leadingZeroCount;
      }
    }
    this.loadWord();
    return leadingZeroCount + this.skipLZ();
  }
  skipUEG() {
    this.skipBits(1 + this.skipLZ());
  }
  skipEG() {
    this.skipBits(1 + this.skipLZ());
  }
  readUEG() {
    const clz = this.skipLZ();
    return this.readBits(clz + 1) - 1;
  }
  readEG() {
    const valu = this.readUEG();
    if (1 & valu) {
      return 1 + valu >>> 1;
    } else {
      return -1 * (valu >>> 1);
    }
  }
  readBoolean() {
    return this.readBits(1) === 1;
  }
  readUByte() {
    return this.readBits(8);
  }
  readUShort() {
    return this.readBits(16);
  }
  readUInt() {
    return this.readBits(32);
  }
};
var AvcVideoParser = class extends BaseVideoParser {
  parsePES(track, textTrack, pes, endOfSegment) {
    const units = this.parseNALu(track, pes.data, endOfSegment);
    let VideoSample = this.VideoSample;
    let push2;
    let spsfound = false;
    pes.data = null;
    if (VideoSample && units.length && !track.audFound) {
      this.pushAccessUnit(VideoSample, track);
      VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts);
    }
    units.forEach((unit) => {
      var _VideoSample2, _VideoSample3;
      switch (unit.type) {
        case 1: {
          let iskey = false;
          push2 = true;
          const data = unit.data;
          if (spsfound && data.length > 4) {
            const sliceType = this.readSliceType(data);
            if (sliceType === 2 || sliceType === 4 || sliceType === 7 || sliceType === 9) {
              iskey = true;
            }
          }
          if (iskey) {
            var _VideoSample;
            if ((_VideoSample = VideoSample) != null && _VideoSample.frame && !VideoSample.key) {
              this.pushAccessUnit(VideoSample, track);
              VideoSample = this.VideoSample = null;
            }
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(true, pes.pts, pes.dts);
          }
          VideoSample.frame = true;
          VideoSample.key = iskey;
          break;
        }
        case 5:
          push2 = true;
          if ((_VideoSample2 = VideoSample) != null && _VideoSample2.frame && !VideoSample.key) {
            this.pushAccessUnit(VideoSample, track);
            VideoSample = this.VideoSample = null;
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(true, pes.pts, pes.dts);
          }
          VideoSample.key = true;
          VideoSample.frame = true;
          break;
        case 6: {
          push2 = true;
          parseSEIMessageFromNALu(unit.data, 1, pes.pts, textTrack.samples);
          break;
        }
        case 7: {
          var _track$pixelRatio, _track$pixelRatio2;
          push2 = true;
          spsfound = true;
          const sps = unit.data;
          const config = this.readSPS(sps);
          if (!track.sps || track.width !== config.width || track.height !== config.height || ((_track$pixelRatio = track.pixelRatio) == null ? void 0 : _track$pixelRatio[0]) !== config.pixelRatio[0] || ((_track$pixelRatio2 = track.pixelRatio) == null ? void 0 : _track$pixelRatio2[1]) !== config.pixelRatio[1]) {
            track.width = config.width;
            track.height = config.height;
            track.pixelRatio = config.pixelRatio;
            track.sps = [sps];
            const codecarray = sps.subarray(1, 4);
            let codecstring = "avc1.";
            for (let i = 0; i < 3; i++) {
              let h = codecarray[i].toString(16);
              if (h.length < 2) {
                h = "0" + h;
              }
              codecstring += h;
            }
            track.codec = codecstring;
          }
          break;
        }
        case 8:
          push2 = true;
          track.pps = [unit.data];
          break;
        case 9:
          push2 = true;
          track.audFound = true;
          if ((_VideoSample3 = VideoSample) != null && _VideoSample3.frame) {
            this.pushAccessUnit(VideoSample, track);
            VideoSample = null;
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts);
          }
          break;
        case 12:
          push2 = true;
          break;
        default:
          push2 = false;
          break;
      }
      if (VideoSample && push2) {
        const units2 = VideoSample.units;
        units2.push(unit);
      }
    });
    if (endOfSegment && VideoSample) {
      this.pushAccessUnit(VideoSample, track);
      this.VideoSample = null;
    }
  }
  getNALuType(data, offset) {
    return data[offset] & 31;
  }
  readSliceType(data) {
    const eg = new ExpGolomb(data);
    eg.readUByte();
    eg.readUEG();
    return eg.readUEG();
  }
  skipScalingList(count, reader) {
    let lastScale = 8;
    let nextScale = 8;
    let deltaScale;
    for (let j = 0; j < count; j++) {
      if (nextScale !== 0) {
        deltaScale = reader.readEG();
        nextScale = (lastScale + deltaScale + 256) % 256;
      }
      lastScale = nextScale === 0 ? lastScale : nextScale;
    }
  }
  readSPS(sps) {
    const eg = new ExpGolomb(sps);
    let frameCropLeftOffset = 0;
    let frameCropRightOffset = 0;
    let frameCropTopOffset = 0;
    let frameCropBottomOffset = 0;
    let numRefFramesInPicOrderCntCycle;
    let scalingListCount;
    let i;
    const readUByte = eg.readUByte.bind(eg);
    const readBits = eg.readBits.bind(eg);
    const readUEG = eg.readUEG.bind(eg);
    const readBoolean = eg.readBoolean.bind(eg);
    const skipBits = eg.skipBits.bind(eg);
    const skipEG = eg.skipEG.bind(eg);
    const skipUEG = eg.skipUEG.bind(eg);
    const skipScalingList = this.skipScalingList.bind(this);
    readUByte();
    const profileIdc = readUByte();
    readBits(5);
    skipBits(3);
    readUByte();
    skipUEG();
    if (profileIdc === 100 || profileIdc === 110 || profileIdc === 122 || profileIdc === 244 || profileIdc === 44 || profileIdc === 83 || profileIdc === 86 || profileIdc === 118 || profileIdc === 128) {
      const chromaFormatIdc = readUEG();
      if (chromaFormatIdc === 3) {
        skipBits(1);
      }
      skipUEG();
      skipUEG();
      skipBits(1);
      if (readBoolean()) {
        scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;
        for (i = 0; i < scalingListCount; i++) {
          if (readBoolean()) {
            if (i < 6) {
              skipScalingList(16, eg);
            } else {
              skipScalingList(64, eg);
            }
          }
        }
      }
    }
    skipUEG();
    const picOrderCntType = readUEG();
    if (picOrderCntType === 0) {
      readUEG();
    } else if (picOrderCntType === 1) {
      skipBits(1);
      skipEG();
      skipEG();
      numRefFramesInPicOrderCntCycle = readUEG();
      for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
        skipEG();
      }
    }
    skipUEG();
    skipBits(1);
    const picWidthInMbsMinus1 = readUEG();
    const picHeightInMapUnitsMinus1 = readUEG();
    const frameMbsOnlyFlag = readBits(1);
    if (frameMbsOnlyFlag === 0) {
      skipBits(1);
    }
    skipBits(1);
    if (readBoolean()) {
      frameCropLeftOffset = readUEG();
      frameCropRightOffset = readUEG();
      frameCropTopOffset = readUEG();
      frameCropBottomOffset = readUEG();
    }
    let pixelRatio = [1, 1];
    if (readBoolean()) {
      if (readBoolean()) {
        const aspectRatioIdc = readUByte();
        switch (aspectRatioIdc) {
          case 1:
            pixelRatio = [1, 1];
            break;
          case 2:
            pixelRatio = [12, 11];
            break;
          case 3:
            pixelRatio = [10, 11];
            break;
          case 4:
            pixelRatio = [16, 11];
            break;
          case 5:
            pixelRatio = [40, 33];
            break;
          case 6:
            pixelRatio = [24, 11];
            break;
          case 7:
            pixelRatio = [20, 11];
            break;
          case 8:
            pixelRatio = [32, 11];
            break;
          case 9:
            pixelRatio = [80, 33];
            break;
          case 10:
            pixelRatio = [18, 11];
            break;
          case 11:
            pixelRatio = [15, 11];
            break;
          case 12:
            pixelRatio = [64, 33];
            break;
          case 13:
            pixelRatio = [160, 99];
            break;
          case 14:
            pixelRatio = [4, 3];
            break;
          case 15:
            pixelRatio = [3, 2];
            break;
          case 16:
            pixelRatio = [2, 1];
            break;
          case 255: {
            pixelRatio = [readUByte() << 8 | readUByte(), readUByte() << 8 | readUByte()];
            break;
          }
        }
      }
    }
    return {
      width: Math.ceil((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2),
      height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - (frameMbsOnlyFlag ? 2 : 4) * (frameCropTopOffset + frameCropBottomOffset),
      pixelRatio
    };
  }
};
var HevcVideoParser = class extends BaseVideoParser {
  constructor(...args) {
    super(...args);
    this.initVPS = null;
  }
  parsePES(track, textTrack, pes, endOfSegment) {
    const units = this.parseNALu(track, pes.data, endOfSegment);
    let VideoSample = this.VideoSample;
    let push2;
    let spsfound = false;
    pes.data = null;
    if (VideoSample && units.length && !track.audFound) {
      this.pushAccessUnit(VideoSample, track);
      VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts);
    }
    units.forEach((unit) => {
      var _VideoSample2, _VideoSample3;
      switch (unit.type) {
        case 0:
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 7:
        case 8:
        case 9:
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts);
          }
          VideoSample.frame = true;
          push2 = true;
          break;
        case 16:
        case 17:
        case 18:
        case 21:
          push2 = true;
          if (spsfound) {
            var _VideoSample;
            if ((_VideoSample = VideoSample) != null && _VideoSample.frame && !VideoSample.key) {
              this.pushAccessUnit(VideoSample, track);
              VideoSample = this.VideoSample = null;
            }
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(true, pes.pts, pes.dts);
          }
          VideoSample.key = true;
          VideoSample.frame = true;
          break;
        case 19:
        case 20:
          push2 = true;
          if ((_VideoSample2 = VideoSample) != null && _VideoSample2.frame && !VideoSample.key) {
            this.pushAccessUnit(VideoSample, track);
            VideoSample = this.VideoSample = null;
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(true, pes.pts, pes.dts);
          }
          VideoSample.key = true;
          VideoSample.frame = true;
          break;
        case 39:
          push2 = true;
          parseSEIMessageFromNALu(unit.data, 2, pes.pts, textTrack.samples);
          break;
        case 32:
          push2 = true;
          if (!track.vps) {
            if (typeof track.params !== "object") {
              track.params = {};
            }
            track.params = _extends(track.params, this.readVPS(unit.data));
            this.initVPS = unit.data;
          }
          track.vps = [unit.data];
          break;
        case 33:
          push2 = true;
          spsfound = true;
          if (track.vps !== void 0 && track.vps[0] !== this.initVPS && track.sps !== void 0 && !this.matchSPS(track.sps[0], unit.data)) {
            this.initVPS = track.vps[0];
            track.sps = track.pps = void 0;
          }
          if (!track.sps) {
            const config = this.readSPS(unit.data);
            track.width = config.width;
            track.height = config.height;
            track.pixelRatio = config.pixelRatio;
            track.codec = config.codecString;
            track.sps = [];
            if (typeof track.params !== "object") {
              track.params = {};
            }
            for (const prop in config.params) {
              track.params[prop] = config.params[prop];
            }
          }
          this.pushParameterSet(track.sps, unit.data, track.vps);
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(true, pes.pts, pes.dts);
          }
          VideoSample.key = true;
          break;
        case 34:
          push2 = true;
          if (typeof track.params === "object") {
            if (!track.pps) {
              track.pps = [];
              const config = this.readPPS(unit.data);
              for (const prop in config) {
                track.params[prop] = config[prop];
              }
            }
            this.pushParameterSet(track.pps, unit.data, track.vps);
          }
          break;
        case 35:
          push2 = true;
          track.audFound = true;
          if ((_VideoSample3 = VideoSample) != null && _VideoSample3.frame) {
            this.pushAccessUnit(VideoSample, track);
            VideoSample = null;
          }
          if (!VideoSample) {
            VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts);
          }
          break;
        default:
          push2 = false;
          break;
      }
      if (VideoSample && push2) {
        const units2 = VideoSample.units;
        units2.push(unit);
      }
    });
    if (endOfSegment && VideoSample) {
      this.pushAccessUnit(VideoSample, track);
      this.VideoSample = null;
    }
  }
  pushParameterSet(parameterSets, data, vps) {
    if (vps && vps[0] === this.initVPS || !vps && !parameterSets.length) {
      parameterSets.push(data);
    }
  }
  getNALuType(data, offset) {
    return (data[offset] & 126) >>> 1;
  }
  ebsp2rbsp(arr) {
    const dst = new Uint8Array(arr.byteLength);
    let dstIdx = 0;
    for (let i = 0; i < arr.byteLength; i++) {
      if (i >= 2) {
        if (arr[i] === 3 && arr[i - 1] === 0 && arr[i - 2] === 0) {
          continue;
        }
      }
      dst[dstIdx] = arr[i];
      dstIdx++;
    }
    return new Uint8Array(dst.buffer, 0, dstIdx);
  }
  pushAccessUnit(VideoSample, videoTrack) {
    super.pushAccessUnit(VideoSample, videoTrack);
    if (this.initVPS) {
      this.initVPS = null;
    }
  }
  readVPS(vps) {
    const eg = new ExpGolomb(vps);
    eg.readUByte();
    eg.readUByte();
    eg.readBits(4);
    eg.skipBits(2);
    eg.readBits(6);
    const max_sub_layers_minus1 = eg.readBits(3);
    const temporal_id_nesting_flag = eg.readBoolean();
    return {
      numTemporalLayers: max_sub_layers_minus1 + 1,
      temporalIdNested: temporal_id_nesting_flag
    };
  }
  readSPS(sps) {
    const eg = new ExpGolomb(this.ebsp2rbsp(sps));
    eg.readUByte();
    eg.readUByte();
    eg.readBits(4);
    const max_sub_layers_minus1 = eg.readBits(3);
    eg.readBoolean();
    const general_profile_space = eg.readBits(2);
    const general_tier_flag = eg.readBoolean();
    const general_profile_idc = eg.readBits(5);
    const general_profile_compatibility_flags_1 = eg.readUByte();
    const general_profile_compatibility_flags_2 = eg.readUByte();
    const general_profile_compatibility_flags_3 = eg.readUByte();
    const general_profile_compatibility_flags_4 = eg.readUByte();
    const general_constraint_indicator_flags_1 = eg.readUByte();
    const general_constraint_indicator_flags_2 = eg.readUByte();
    const general_constraint_indicator_flags_3 = eg.readUByte();
    const general_constraint_indicator_flags_4 = eg.readUByte();
    const general_constraint_indicator_flags_5 = eg.readUByte();
    const general_constraint_indicator_flags_6 = eg.readUByte();
    const general_level_idc = eg.readUByte();
    const sub_layer_profile_present_flags = [];
    const sub_layer_level_present_flags = [];
    for (let i = 0; i < max_sub_layers_minus1; i++) {
      sub_layer_profile_present_flags.push(eg.readBoolean());
      sub_layer_level_present_flags.push(eg.readBoolean());
    }
    if (max_sub_layers_minus1 > 0) {
      for (let i = max_sub_layers_minus1; i < 8; i++) {
        eg.readBits(2);
      }
    }
    for (let i = 0; i < max_sub_layers_minus1; i++) {
      if (sub_layer_profile_present_flags[i]) {
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
        eg.readUByte();
      }
      if (sub_layer_level_present_flags[i]) {
        eg.readUByte();
      }
    }
    eg.readUEG();
    const chroma_format_idc = eg.readUEG();
    if (chroma_format_idc == 3) {
      eg.skipBits(1);
    }
    const pic_width_in_luma_samples = eg.readUEG();
    const pic_height_in_luma_samples = eg.readUEG();
    const conformance_window_flag = eg.readBoolean();
    let pic_left_offset = 0, pic_right_offset = 0, pic_top_offset = 0, pic_bottom_offset = 0;
    if (conformance_window_flag) {
      pic_left_offset += eg.readUEG();
      pic_right_offset += eg.readUEG();
      pic_top_offset += eg.readUEG();
      pic_bottom_offset += eg.readUEG();
    }
    const bit_depth_luma_minus8 = eg.readUEG();
    const bit_depth_chroma_minus8 = eg.readUEG();
    const log2_max_pic_order_cnt_lsb_minus4 = eg.readUEG();
    const sub_layer_ordering_info_present_flag = eg.readBoolean();
    for (let i = sub_layer_ordering_info_present_flag ? 0 : max_sub_layers_minus1; i <= max_sub_layers_minus1; i++) {
      eg.skipUEG();
      eg.skipUEG();
      eg.skipUEG();
    }
    eg.skipUEG();
    eg.skipUEG();
    eg.skipUEG();
    eg.skipUEG();
    eg.skipUEG();
    eg.skipUEG();
    const scaling_list_enabled_flag = eg.readBoolean();
    if (scaling_list_enabled_flag) {
      const sps_scaling_list_data_present_flag = eg.readBoolean();
      if (sps_scaling_list_data_present_flag) {
        for (let sizeId = 0; sizeId < 4; sizeId++) {
          for (let matrixId = 0; matrixId < (sizeId === 3 ? 2 : 6); matrixId++) {
            const scaling_list_pred_mode_flag = eg.readBoolean();
            if (!scaling_list_pred_mode_flag) {
              eg.readUEG();
            } else {
              const coefNum = Math.min(64, 1 << 4 + (sizeId << 1));
              if (sizeId > 1) {
                eg.readEG();
              }
              for (let i = 0; i < coefNum; i++) {
                eg.readEG();
              }
            }
          }
        }
      }
    }
    eg.readBoolean();
    eg.readBoolean();
    const pcm_enabled_flag = eg.readBoolean();
    if (pcm_enabled_flag) {
      eg.readUByte();
      eg.skipUEG();
      eg.skipUEG();
      eg.readBoolean();
    }
    const num_short_term_ref_pic_sets = eg.readUEG();
    let num_delta_pocs = 0;
    for (let i = 0; i < num_short_term_ref_pic_sets; i++) {
      let inter_ref_pic_set_prediction_flag = false;
      if (i !== 0) {
        inter_ref_pic_set_prediction_flag = eg.readBoolean();
      }
      if (inter_ref_pic_set_prediction_flag) {
        if (i === num_short_term_ref_pic_sets) {
          eg.readUEG();
        }
        eg.readBoolean();
        eg.readUEG();
        let next_num_delta_pocs = 0;
        for (let j = 0; j <= num_delta_pocs; j++) {
          const used_by_curr_pic_flag = eg.readBoolean();
          let use_delta_flag = false;
          if (!used_by_curr_pic_flag) {
            use_delta_flag = eg.readBoolean();
          }
          if (used_by_curr_pic_flag || use_delta_flag) {
            next_num_delta_pocs++;
          }
        }
        num_delta_pocs = next_num_delta_pocs;
      } else {
        const num_negative_pics = eg.readUEG();
        const num_positive_pics = eg.readUEG();
        num_delta_pocs = num_negative_pics + num_positive_pics;
        for (let j = 0; j < num_negative_pics; j++) {
          eg.readUEG();
          eg.readBoolean();
        }
        for (let j = 0; j < num_positive_pics; j++) {
          eg.readUEG();
          eg.readBoolean();
        }
      }
    }
    const long_term_ref_pics_present_flag = eg.readBoolean();
    if (long_term_ref_pics_present_flag) {
      const num_long_term_ref_pics_sps = eg.readUEG();
      for (let i = 0; i < num_long_term_ref_pics_sps; i++) {
        for (let j = 0; j < log2_max_pic_order_cnt_lsb_minus4 + 4; j++) {
          eg.readBits(1);
        }
        eg.readBits(1);
      }
    }
    let min_spatial_segmentation_idc = 0;
    let sar_width = 1, sar_height = 1;
    let fps_fixed = true, fps_den = 1, fps_num = 0;
    eg.readBoolean();
    eg.readBoolean();
    let default_display_window_flag = false;
    const vui_parameters_present_flag = eg.readBoolean();
    if (vui_parameters_present_flag) {
      const aspect_ratio_info_present_flag = eg.readBoolean();
      if (aspect_ratio_info_present_flag) {
        const aspect_ratio_idc = eg.readUByte();
        const sar_width_table = [1, 12, 10, 16, 40, 24, 20, 32, 80, 18, 15, 64, 160, 4, 3, 2];
        const sar_height_table = [1, 11, 11, 11, 33, 11, 11, 11, 33, 11, 11, 33, 99, 3, 2, 1];
        if (aspect_ratio_idc > 0 && aspect_ratio_idc < 16) {
          sar_width = sar_width_table[aspect_ratio_idc - 1];
          sar_height = sar_height_table[aspect_ratio_idc - 1];
        } else if (aspect_ratio_idc === 255) {
          sar_width = eg.readBits(16);
          sar_height = eg.readBits(16);
        }
      }
      const overscan_info_present_flag = eg.readBoolean();
      if (overscan_info_present_flag) {
        eg.readBoolean();
      }
      const video_signal_type_present_flag = eg.readBoolean();
      if (video_signal_type_present_flag) {
        eg.readBits(3);
        eg.readBoolean();
        const colour_description_present_flag = eg.readBoolean();
        if (colour_description_present_flag) {
          eg.readUByte();
          eg.readUByte();
          eg.readUByte();
        }
      }
      const chroma_loc_info_present_flag = eg.readBoolean();
      if (chroma_loc_info_present_flag) {
        eg.readUEG();
        eg.readUEG();
      }
      eg.readBoolean();
      eg.readBoolean();
      eg.readBoolean();
      default_display_window_flag = eg.readBoolean();
      if (default_display_window_flag) {
        pic_left_offset += eg.readUEG();
        pic_right_offset += eg.readUEG();
        pic_top_offset += eg.readUEG();
        pic_bottom_offset += eg.readUEG();
      }
      const vui_timing_info_present_flag = eg.readBoolean();
      if (vui_timing_info_present_flag) {
        fps_den = eg.readBits(32);
        fps_num = eg.readBits(32);
        const vui_poc_proportional_to_timing_flag = eg.readBoolean();
        if (vui_poc_proportional_to_timing_flag) {
          eg.readUEG();
        }
        const vui_hrd_parameters_present_flag = eg.readBoolean();
        if (vui_hrd_parameters_present_flag) {
          const nal_hrd_parameters_present_flag = eg.readBoolean();
          const vcl_hrd_parameters_present_flag = eg.readBoolean();
          let sub_pic_hrd_params_present_flag = false;
          if (nal_hrd_parameters_present_flag || vcl_hrd_parameters_present_flag) {
            sub_pic_hrd_params_present_flag = eg.readBoolean();
            if (sub_pic_hrd_params_present_flag) {
              eg.readUByte();
              eg.readBits(5);
              eg.readBoolean();
              eg.readBits(5);
            }
            eg.readBits(4);
            eg.readBits(4);
            if (sub_pic_hrd_params_present_flag) {
              eg.readBits(4);
            }
            eg.readBits(5);
            eg.readBits(5);
            eg.readBits(5);
          }
          for (let i = 0; i <= max_sub_layers_minus1; i++) {
            fps_fixed = eg.readBoolean();
            const fixed_pic_rate_within_cvs_flag = fps_fixed || eg.readBoolean();
            let low_delay_hrd_flag = false;
            if (fixed_pic_rate_within_cvs_flag) {
              eg.readEG();
            } else {
              low_delay_hrd_flag = eg.readBoolean();
            }
            const cpb_cnt = low_delay_hrd_flag ? 1 : eg.readUEG() + 1;
            if (nal_hrd_parameters_present_flag) {
              for (let j = 0; j < cpb_cnt; j++) {
                eg.readUEG();
                eg.readUEG();
                if (sub_pic_hrd_params_present_flag) {
                  eg.readUEG();
                  eg.readUEG();
                }
                eg.skipBits(1);
              }
            }
            if (vcl_hrd_parameters_present_flag) {
              for (let j = 0; j < cpb_cnt; j++) {
                eg.readUEG();
                eg.readUEG();
                if (sub_pic_hrd_params_present_flag) {
                  eg.readUEG();
                  eg.readUEG();
                }
                eg.skipBits(1);
              }
            }
          }
        }
      }
      const bitstream_restriction_flag = eg.readBoolean();
      if (bitstream_restriction_flag) {
        eg.readBoolean();
        eg.readBoolean();
        eg.readBoolean();
        min_spatial_segmentation_idc = eg.readUEG();
      }
    }
    let width = pic_width_in_luma_samples, height = pic_height_in_luma_samples;
    if (conformance_window_flag || default_display_window_flag) {
      let chroma_scale_w = 1, chroma_scale_h = 1;
      if (chroma_format_idc === 1) {
        chroma_scale_w = chroma_scale_h = 2;
      } else if (chroma_format_idc == 2) {
        chroma_scale_w = 2;
      }
      width = pic_width_in_luma_samples - chroma_scale_w * pic_right_offset - chroma_scale_w * pic_left_offset;
      height = pic_height_in_luma_samples - chroma_scale_h * pic_bottom_offset - chroma_scale_h * pic_top_offset;
    }
    const profile_space_string = general_profile_space ? ["A", "B", "C"][general_profile_space] : "";
    const profile_compatibility_buf = general_profile_compatibility_flags_1 << 24 | general_profile_compatibility_flags_2 << 16 | general_profile_compatibility_flags_3 << 8 | general_profile_compatibility_flags_4;
    let profile_compatibility_rev = 0;
    for (let i = 0; i < 32; i++) {
      profile_compatibility_rev = (profile_compatibility_rev | (profile_compatibility_buf >> i & 1) << 31 - i) >>> 0;
    }
    let profile_compatibility_flags_string = profile_compatibility_rev.toString(16);
    if (general_profile_idc === 1 && profile_compatibility_flags_string === "2") {
      profile_compatibility_flags_string = "6";
    }
    const tier_flag_string = general_tier_flag ? "H" : "L";
    return {
      codecString: `hvc1.${profile_space_string}${general_profile_idc}.${profile_compatibility_flags_string}.${tier_flag_string}${general_level_idc}.B0`,
      params: {
        general_tier_flag,
        general_profile_idc,
        general_profile_space,
        general_profile_compatibility_flags: [general_profile_compatibility_flags_1, general_profile_compatibility_flags_2, general_profile_compatibility_flags_3, general_profile_compatibility_flags_4],
        general_constraint_indicator_flags: [general_constraint_indicator_flags_1, general_constraint_indicator_flags_2, general_constraint_indicator_flags_3, general_constraint_indicator_flags_4, general_constraint_indicator_flags_5, general_constraint_indicator_flags_6],
        general_level_idc,
        bit_depth: bit_depth_luma_minus8 + 8,
        bit_depth_luma_minus8,
        bit_depth_chroma_minus8,
        min_spatial_segmentation_idc,
        chroma_format_idc,
        frame_rate: {
          fixed: fps_fixed,
          fps: fps_num / fps_den
        }
      },
      width,
      height,
      pixelRatio: [sar_width, sar_height]
    };
  }
  readPPS(pps) {
    const eg = new ExpGolomb(this.ebsp2rbsp(pps));
    eg.readUByte();
    eg.readUByte();
    eg.skipUEG();
    eg.skipUEG();
    eg.skipBits(2);
    eg.skipBits(3);
    eg.skipBits(2);
    eg.skipUEG();
    eg.skipUEG();
    eg.skipEG();
    eg.skipBits(2);
    const cu_qp_delta_enabled_flag = eg.readBoolean();
    if (cu_qp_delta_enabled_flag) {
      eg.skipUEG();
    }
    eg.skipEG();
    eg.skipEG();
    eg.skipBits(4);
    const tiles_enabled_flag = eg.readBoolean();
    const entropy_coding_sync_enabled_flag = eg.readBoolean();
    let parallelismType = 1;
    if (entropy_coding_sync_enabled_flag && tiles_enabled_flag) {
      parallelismType = 0;
    } else if (entropy_coding_sync_enabled_flag) {
      parallelismType = 3;
    } else if (tiles_enabled_flag) {
      parallelismType = 2;
    }
    return {
      parallelismType
    };
  }
  matchSPS(sps1, sps2) {
    return String.fromCharCode.apply(null, sps1).substr(3) === String.fromCharCode.apply(null, sps2).substr(3);
  }
};
var PACKET_LENGTH = 188;
var TSDemuxer = class {
  constructor(observer, config, typeSupported, logger2) {
    this.logger = void 0;
    this.observer = void 0;
    this.config = void 0;
    this.typeSupported = void 0;
    this.sampleAes = null;
    this.pmtParsed = false;
    this.audioCodec = void 0;
    this.videoCodec = void 0;
    this._pmtId = -1;
    this._videoTrack = void 0;
    this._audioTrack = void 0;
    this._id3Track = void 0;
    this._txtTrack = void 0;
    this.aacOverFlow = null;
    this.remainderData = null;
    this.videoParser = void 0;
    this.observer = observer;
    this.config = config;
    this.typeSupported = typeSupported;
    this.logger = logger2;
    this.videoParser = null;
  }
  static probe(data, logger2) {
    const syncOffset = TSDemuxer.syncOffset(data);
    if (syncOffset > 0) {
      logger2.warn(`MPEG2-TS detected but first sync word found @ offset ${syncOffset}`);
    }
    return syncOffset !== -1;
  }
  static syncOffset(data) {
    const length = data.length;
    let scanwindow = Math.min(PACKET_LENGTH * 5, length - PACKET_LENGTH) + 1;
    let i = 0;
    while (i < scanwindow) {
      let foundPat = false;
      let packetStart = -1;
      let tsPackets = 0;
      for (let j = i; j < length; j += PACKET_LENGTH) {
        if (data[j] === 71 && (length - j === PACKET_LENGTH || data[j + PACKET_LENGTH] === 71)) {
          tsPackets++;
          if (packetStart === -1) {
            packetStart = j;
            if (packetStart !== 0) {
              scanwindow = Math.min(packetStart + PACKET_LENGTH * 99, data.length - PACKET_LENGTH) + 1;
            }
          }
          if (!foundPat) {
            foundPat = parsePID(data, j) === 0;
          }
          if (foundPat && tsPackets > 1 && (packetStart === 0 && tsPackets > 2 || j + PACKET_LENGTH > scanwindow)) {
            return packetStart;
          }
        } else if (tsPackets) {
          return -1;
        } else {
          break;
        }
      }
      i++;
    }
    return -1;
  }
  static createTrack(type, duration) {
    return {
      container: type === "video" || type === "audio" ? "video/mp2t" : void 0,
      type,
      id: RemuxerTrackIdConfig[type],
      pid: -1,
      inputTimeScale: 9e4,
      sequenceNumber: 0,
      samples: [],
      dropped: 0,
      duration: type === "audio" ? duration : void 0
    };
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
    this.pmtParsed = false;
    this._pmtId = -1;
    this._videoTrack = TSDemuxer.createTrack("video");
    this._videoTrack.duration = trackDuration;
    this._audioTrack = TSDemuxer.createTrack("audio", trackDuration);
    this._id3Track = TSDemuxer.createTrack("id3");
    this._txtTrack = TSDemuxer.createTrack("text");
    this._audioTrack.segmentCodec = "aac";
    this.aacOverFlow = null;
    this.remainderData = null;
    this.audioCodec = audioCodec;
    this.videoCodec = videoCodec;
  }
  resetTimeStamp() {
  }
  resetContiguity() {
    const {
      _audioTrack,
      _videoTrack,
      _id3Track
    } = this;
    if (_audioTrack) {
      _audioTrack.pesData = null;
    }
    if (_videoTrack) {
      _videoTrack.pesData = null;
    }
    if (_id3Track) {
      _id3Track.pesData = null;
    }
    this.aacOverFlow = null;
    this.remainderData = null;
  }
  demux(data, timeOffset, isSampleAes = false, flush = false) {
    if (!isSampleAes) {
      this.sampleAes = null;
    }
    let pes;
    const videoTrack = this._videoTrack;
    const audioTrack = this._audioTrack;
    const id3Track = this._id3Track;
    const textTrack = this._txtTrack;
    let videoPid = videoTrack.pid;
    let videoData = videoTrack.pesData;
    let audioPid = audioTrack.pid;
    let id3Pid = id3Track.pid;
    let audioData = audioTrack.pesData;
    let id3Data = id3Track.pesData;
    let unknownPID = null;
    let pmtParsed = this.pmtParsed;
    let pmtId = this._pmtId;
    let len = data.length;
    if (this.remainderData) {
      data = appendUint8Array(this.remainderData, data);
      len = data.length;
      this.remainderData = null;
    }
    if (len < PACKET_LENGTH && !flush) {
      this.remainderData = data;
      return {
        audioTrack,
        videoTrack,
        id3Track,
        textTrack
      };
    }
    const syncOffset = Math.max(0, TSDemuxer.syncOffset(data));
    len -= (len - syncOffset) % PACKET_LENGTH;
    if (len < data.byteLength && !flush) {
      this.remainderData = new Uint8Array(data.buffer, len, data.buffer.byteLength - len);
    }
    let tsPacketErrors = 0;
    for (let start = syncOffset; start < len; start += PACKET_LENGTH) {
      if (data[start] === 71) {
        const stt = !!(data[start + 1] & 64);
        const pid = parsePID(data, start);
        const atf = (data[start + 3] & 48) >> 4;
        let offset;
        if (atf > 1) {
          offset = start + 5 + data[start + 4];
          if (offset === start + PACKET_LENGTH) {
            continue;
          }
        } else {
          offset = start + 4;
        }
        switch (pid) {
          case videoPid:
            if (stt) {
              if (videoData && (pes = parsePES(videoData, this.logger))) {
                if (this.videoParser === null) {
                  switch (videoTrack.segmentCodec) {
                    case "avc":
                      this.videoParser = new AvcVideoParser();
                      break;
                    case "hevc":
                      {
                        this.videoParser = new HevcVideoParser();
                      }
                      break;
                  }
                }
                if (this.videoParser !== null) {
                  this.videoParser.parsePES(videoTrack, textTrack, pes, false);
                }
              }
              videoData = {
                data: [],
                size: 0
              };
            }
            if (videoData) {
              videoData.data.push(data.subarray(offset, start + PACKET_LENGTH));
              videoData.size += start + PACKET_LENGTH - offset;
            }
            break;
          case audioPid:
            if (stt) {
              if (audioData && (pes = parsePES(audioData, this.logger))) {
                switch (audioTrack.segmentCodec) {
                  case "aac":
                    this.parseAACPES(audioTrack, pes);
                    break;
                  case "mp3":
                    this.parseMPEGPES(audioTrack, pes);
                    break;
                  case "ac3":
                    {
                      this.parseAC3PES(audioTrack, pes);
                    }
                    break;
                }
              }
              audioData = {
                data: [],
                size: 0
              };
            }
            if (audioData) {
              audioData.data.push(data.subarray(offset, start + PACKET_LENGTH));
              audioData.size += start + PACKET_LENGTH - offset;
            }
            break;
          case id3Pid:
            if (stt) {
              if (id3Data && (pes = parsePES(id3Data, this.logger))) {
                this.parseID3PES(id3Track, pes);
              }
              id3Data = {
                data: [],
                size: 0
              };
            }
            if (id3Data) {
              id3Data.data.push(data.subarray(offset, start + PACKET_LENGTH));
              id3Data.size += start + PACKET_LENGTH - offset;
            }
            break;
          case 0:
            if (stt) {
              offset += data[offset] + 1;
            }
            pmtId = this._pmtId = parsePAT(data, offset);
            break;
          case pmtId: {
            if (stt) {
              offset += data[offset] + 1;
            }
            const parsedPIDs = parsePMT(data, offset, this.typeSupported, isSampleAes, this.observer, this.logger);
            videoPid = parsedPIDs.videoPid;
            if (videoPid > 0) {
              videoTrack.pid = videoPid;
              videoTrack.segmentCodec = parsedPIDs.segmentVideoCodec;
            }
            audioPid = parsedPIDs.audioPid;
            if (audioPid > 0) {
              audioTrack.pid = audioPid;
              audioTrack.segmentCodec = parsedPIDs.segmentAudioCodec;
            }
            id3Pid = parsedPIDs.id3Pid;
            if (id3Pid > 0) {
              id3Track.pid = id3Pid;
            }
            if (unknownPID !== null && !pmtParsed) {
              this.logger.warn(`MPEG-TS PMT found at ${start} after unknown PID '${unknownPID}'. Backtracking to sync byte @${syncOffset} to parse all TS packets.`);
              unknownPID = null;
              start = syncOffset - 188;
            }
            pmtParsed = this.pmtParsed = true;
            break;
          }
          case 17:
          case 8191:
            break;
          default:
            unknownPID = pid;
            break;
        }
      } else {
        tsPacketErrors++;
      }
    }
    if (tsPacketErrors > 0) {
      emitParsingError(this.observer, new Error(`Found ${tsPacketErrors} TS packet/s that do not start with 0x47`), void 0, this.logger);
    }
    videoTrack.pesData = videoData;
    audioTrack.pesData = audioData;
    id3Track.pesData = id3Data;
    const demuxResult = {
      audioTrack,
      videoTrack,
      id3Track,
      textTrack
    };
    if (flush) {
      this.extractRemainingSamples(demuxResult);
    }
    return demuxResult;
  }
  flush() {
    const {
      remainderData
    } = this;
    this.remainderData = null;
    let result;
    if (remainderData) {
      result = this.demux(remainderData, -1, false, true);
    } else {
      result = {
        videoTrack: this._videoTrack,
        audioTrack: this._audioTrack,
        id3Track: this._id3Track,
        textTrack: this._txtTrack
      };
    }
    this.extractRemainingSamples(result);
    if (this.sampleAes) {
      return this.decrypt(result, this.sampleAes);
    }
    return result;
  }
  extractRemainingSamples(demuxResult) {
    const {
      audioTrack,
      videoTrack,
      id3Track,
      textTrack
    } = demuxResult;
    const videoData = videoTrack.pesData;
    const audioData = audioTrack.pesData;
    const id3Data = id3Track.pesData;
    let pes;
    if (videoData && (pes = parsePES(videoData, this.logger))) {
      if (this.videoParser === null) {
        switch (videoTrack.segmentCodec) {
          case "avc":
            this.videoParser = new AvcVideoParser();
            break;
          case "hevc":
            {
              this.videoParser = new HevcVideoParser();
            }
            break;
        }
      }
      if (this.videoParser !== null) {
        this.videoParser.parsePES(videoTrack, textTrack, pes, true);
        videoTrack.pesData = null;
      }
    } else {
      videoTrack.pesData = videoData;
    }
    if (audioData && (pes = parsePES(audioData, this.logger))) {
      switch (audioTrack.segmentCodec) {
        case "aac":
          this.parseAACPES(audioTrack, pes);
          break;
        case "mp3":
          this.parseMPEGPES(audioTrack, pes);
          break;
        case "ac3":
          {
            this.parseAC3PES(audioTrack, pes);
          }
          break;
      }
      audioTrack.pesData = null;
    } else {
      if (audioData != null && audioData.size) {
        this.logger.log("last AAC PES packet truncated,might overlap between fragments");
      }
      audioTrack.pesData = audioData;
    }
    if (id3Data && (pes = parsePES(id3Data, this.logger))) {
      this.parseID3PES(id3Track, pes);
      id3Track.pesData = null;
    } else {
      id3Track.pesData = id3Data;
    }
  }
  demuxSampleAes(data, keyData, timeOffset) {
    const demuxResult = this.demux(data, timeOffset, true, !this.config.progressive);
    const sampleAes = this.sampleAes = new SampleAesDecrypter(this.observer, this.config, keyData);
    return this.decrypt(demuxResult, sampleAes);
  }
  decrypt(demuxResult, sampleAes) {
    return new Promise((resolve) => {
      const {
        audioTrack,
        videoTrack
      } = demuxResult;
      if (audioTrack.samples && audioTrack.segmentCodec === "aac") {
        sampleAes.decryptAacSamples(audioTrack.samples, 0, () => {
          if (videoTrack.samples) {
            sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, () => {
              resolve(demuxResult);
            });
          } else {
            resolve(demuxResult);
          }
        });
      } else if (videoTrack.samples) {
        sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, () => {
          resolve(demuxResult);
        });
      }
    });
  }
  destroy() {
    if (this.observer) {
      this.observer.removeAllListeners();
    }
    this.config = this.logger = this.observer = null;
    this.aacOverFlow = this.videoParser = this.remainderData = this.sampleAes = null;
    this._videoTrack = this._audioTrack = this._id3Track = this._txtTrack = void 0;
  }
  parseAACPES(track, pes) {
    let startOffset = 0;
    const aacOverFlow = this.aacOverFlow;
    let data = pes.data;
    if (aacOverFlow) {
      this.aacOverFlow = null;
      const frameMissingBytes = aacOverFlow.missing;
      const sampleLength = aacOverFlow.sample.unit.byteLength;
      if (frameMissingBytes === -1) {
        data = appendUint8Array(aacOverFlow.sample.unit, data);
      } else {
        const frameOverflowBytes = sampleLength - frameMissingBytes;
        aacOverFlow.sample.unit.set(data.subarray(0, frameMissingBytes), frameOverflowBytes);
        track.samples.push(aacOverFlow.sample);
        startOffset = aacOverFlow.missing;
      }
    }
    let offset;
    let len;
    for (offset = startOffset, len = data.length; offset < len - 1; offset++) {
      if (isHeader$1(data, offset)) {
        break;
      }
    }
    if (offset !== startOffset) {
      let reason;
      const recoverable = offset < len - 1;
      if (recoverable) {
        reason = `AAC PES did not start with ADTS header,offset:${offset}`;
      } else {
        reason = "No ADTS header found in AAC PES";
      }
      emitParsingError(this.observer, new Error(reason), recoverable, this.logger);
      if (!recoverable) {
        return;
      }
    }
    initTrackConfig(track, this.observer, data, offset, this.audioCodec);
    let pts;
    if (pes.pts !== void 0) {
      pts = pes.pts;
    } else if (aacOverFlow) {
      const frameDuration = getFrameDuration(track.samplerate);
      pts = aacOverFlow.sample.pts + frameDuration;
    } else {
      this.logger.warn("[tsdemuxer]: AAC PES unknown PTS");
      return;
    }
    let frameIndex = 0;
    let frame;
    while (offset < len) {
      frame = appendFrame$2(track, data, offset, pts, frameIndex);
      offset += frame.length;
      if (!frame.missing) {
        frameIndex++;
        for (; offset < len - 1; offset++) {
          if (isHeader$1(data, offset)) {
            break;
          }
        }
      } else {
        this.aacOverFlow = frame;
        break;
      }
    }
  }
  parseMPEGPES(track, pes) {
    const data = pes.data;
    const length = data.length;
    let frameIndex = 0;
    let offset = 0;
    const pts = pes.pts;
    if (pts === void 0) {
      this.logger.warn("[tsdemuxer]: MPEG PES unknown PTS");
      return;
    }
    while (offset < length) {
      if (isHeader(data, offset)) {
        const frame = appendFrame$1(track, data, offset, pts, frameIndex);
        if (frame) {
          offset += frame.length;
          frameIndex++;
        } else {
          break;
        }
      } else {
        offset++;
      }
    }
  }
  parseAC3PES(track, pes) {
    {
      const data = pes.data;
      const pts = pes.pts;
      if (pts === void 0) {
        this.logger.warn("[tsdemuxer]: AC3 PES unknown PTS");
        return;
      }
      const length = data.length;
      let frameIndex = 0;
      let offset = 0;
      let parsed;
      while (offset < length && (parsed = appendFrame(track, data, offset, pts, frameIndex++)) > 0) {
        offset += parsed;
      }
    }
  }
  parseID3PES(id3Track, pes) {
    if (pes.pts === void 0) {
      this.logger.warn("[tsdemuxer]: ID3 PES unknown PTS");
      return;
    }
    const id3Sample = _extends({}, pes, {
      type: this._videoTrack ? MetadataSchema.emsg : MetadataSchema.audioId3,
      duration: Number.POSITIVE_INFINITY
    });
    id3Track.samples.push(id3Sample);
  }
};
function parsePID(data, offset) {
  return ((data[offset + 1] & 31) << 8) + data[offset + 2];
}
function parsePAT(data, offset) {
  return (data[offset + 10] & 31) << 8 | data[offset + 11];
}
function parsePMT(data, offset, typeSupported, isSampleAes, observer, logger2) {
  const result = {
    audioPid: -1,
    videoPid: -1,
    id3Pid: -1,
    segmentVideoCodec: "avc",
    segmentAudioCodec: "aac"
  };
  const sectionLength = (data[offset + 1] & 15) << 8 | data[offset + 2];
  const tableEnd = offset + 3 + sectionLength - 4;
  const programInfoLength = (data[offset + 10] & 15) << 8 | data[offset + 11];
  offset += 12 + programInfoLength;
  while (offset < tableEnd) {
    const pid = parsePID(data, offset);
    const esInfoLength = (data[offset + 3] & 15) << 8 | data[offset + 4];
    switch (data[offset]) {
      case 207:
        if (!isSampleAes) {
          logEncryptedSamplesFoundInUnencryptedStream("ADTS AAC", logger2);
          break;
        }
      case 15:
        if (result.audioPid === -1) {
          result.audioPid = pid;
        }
        break;
      case 21:
        if (result.id3Pid === -1) {
          result.id3Pid = pid;
        }
        break;
      case 219:
        if (!isSampleAes) {
          logEncryptedSamplesFoundInUnencryptedStream("H.264", logger2);
          break;
        }
      case 27:
        if (result.videoPid === -1) {
          result.videoPid = pid;
        }
        break;
      case 3:
      case 4:
        if (!typeSupported.mpeg && !typeSupported.mp3) {
          logger2.log("MPEG audio found, not supported in this browser");
        } else if (result.audioPid === -1) {
          result.audioPid = pid;
          result.segmentAudioCodec = "mp3";
        }
        break;
      case 193:
        if (!isSampleAes) {
          logEncryptedSamplesFoundInUnencryptedStream("AC-3", logger2);
          break;
        }
      case 129:
        {
          if (!typeSupported.ac3) {
            logger2.log("AC-3 audio found, not supported in this browser");
          } else if (result.audioPid === -1) {
            result.audioPid = pid;
            result.segmentAudioCodec = "ac3";
          }
        }
        break;
      case 6:
        if (result.audioPid === -1 && esInfoLength > 0) {
          let parsePos = offset + 5;
          let remaining = esInfoLength;
          while (remaining > 2) {
            const descriptorId = data[parsePos];
            switch (descriptorId) {
              case 106:
                {
                  if (typeSupported.ac3 !== true) {
                    logger2.log("AC-3 audio found, not supported in this browser for now");
                  } else {
                    result.audioPid = pid;
                    result.segmentAudioCodec = "ac3";
                  }
                }
                break;
            }
            const descriptorLen = data[parsePos + 1] + 2;
            parsePos += descriptorLen;
            remaining -= descriptorLen;
          }
        }
        break;
      case 194:
      case 135:
        emitParsingError(observer, new Error("Unsupported EC-3 in M2TS found"), void 0, logger2);
        return result;
      case 36:
        {
          if (result.videoPid === -1) {
            result.videoPid = pid;
            result.segmentVideoCodec = "hevc";
            logger2.log("HEVC in M2TS found");
          }
        }
        break;
    }
    offset += esInfoLength + 5;
  }
  return result;
}
function emitParsingError(observer, error, levelRetry, logger2) {
  logger2.warn(`parsing error: ${error.message}`);
  observer.emit(Events.ERROR, Events.ERROR, {
    type: ErrorTypes.MEDIA_ERROR,
    details: ErrorDetails.FRAG_PARSING_ERROR,
    fatal: false,
    levelRetry,
    error,
    reason: error.message
  });
}
function logEncryptedSamplesFoundInUnencryptedStream(type, logger2) {
  logger2.log(`${type} with AES-128-CBC encryption found in unencrypted stream`);
}
function parsePES(stream, logger2) {
  let i = 0;
  let frag;
  let pesLen;
  let pesHdrLen;
  let pesPts;
  let pesDts;
  const data = stream.data;
  if (!stream || stream.size === 0) {
    return null;
  }
  while (data[0].length < 19 && data.length > 1) {
    data[0] = appendUint8Array(data[0], data[1]);
    data.splice(1, 1);
  }
  frag = data[0];
  const pesPrefix = (frag[0] << 16) + (frag[1] << 8) + frag[2];
  if (pesPrefix === 1) {
    pesLen = (frag[4] << 8) + frag[5];
    if (pesLen && pesLen > stream.size - 6) {
      return null;
    }
    const pesFlags = frag[7];
    if (pesFlags & 192) {
      pesPts = (frag[9] & 14) * 536870912 + (frag[10] & 255) * 4194304 + (frag[11] & 254) * 16384 + (frag[12] & 255) * 128 + (frag[13] & 254) / 2;
      if (pesFlags & 64) {
        pesDts = (frag[14] & 14) * 536870912 + (frag[15] & 255) * 4194304 + (frag[16] & 254) * 16384 + (frag[17] & 255) * 128 + (frag[18] & 254) / 2;
        if (pesPts - pesDts > 60 * 9e4) {
          logger2.warn(`${Math.round((pesPts - pesDts) / 9e4)}s delta between PTS and DTS, align them`);
          pesPts = pesDts;
        }
      } else {
        pesDts = pesPts;
      }
    }
    pesHdrLen = frag[8];
    let payloadStartOffset = pesHdrLen + 9;
    if (stream.size <= payloadStartOffset) {
      return null;
    }
    stream.size -= payloadStartOffset;
    const pesData = new Uint8Array(stream.size);
    for (let j = 0, dataLen = data.length; j < dataLen; j++) {
      frag = data[j];
      let len = frag.byteLength;
      if (payloadStartOffset) {
        if (payloadStartOffset > len) {
          payloadStartOffset -= len;
          continue;
        } else {
          frag = frag.subarray(payloadStartOffset);
          len -= payloadStartOffset;
          payloadStartOffset = 0;
        }
      }
      pesData.set(frag, i);
      i += len;
    }
    if (pesLen) {
      pesLen -= pesHdrLen + 3;
    }
    return {
      data: pesData,
      pts: pesPts,
      dts: pesDts,
      len: pesLen
    };
  }
  return null;
}
var AAC = class {
  static getSilentFrame(codec, channelCount) {
    switch (codec) {
      case "mp4a.40.2":
        if (channelCount === 1) {
          return new Uint8Array([0, 200, 0, 128, 35, 128]);
        } else if (channelCount === 2) {
          return new Uint8Array([33, 0, 73, 144, 2, 25, 0, 35, 128]);
        } else if (channelCount === 3) {
          return new Uint8Array([0, 200, 0, 128, 32, 132, 1, 38, 64, 8, 100, 0, 142]);
        } else if (channelCount === 4) {
          return new Uint8Array([0, 200, 0, 128, 32, 132, 1, 38, 64, 8, 100, 0, 128, 44, 128, 8, 2, 56]);
        } else if (channelCount === 5) {
          return new Uint8Array([0, 200, 0, 128, 32, 132, 1, 38, 64, 8, 100, 0, 130, 48, 4, 153, 0, 33, 144, 2, 56]);
        } else if (channelCount === 6) {
          return new Uint8Array([0, 200, 0, 128, 32, 132, 1, 38, 64, 8, 100, 0, 130, 48, 4, 153, 0, 33, 144, 2, 0, 178, 0, 32, 8, 224]);
        }
        break;
      default:
        if (channelCount === 1) {
          return new Uint8Array([1, 64, 34, 128, 163, 78, 230, 128, 186, 8, 0, 0, 0, 28, 6, 241, 193, 10, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 94]);
        } else if (channelCount === 2) {
          return new Uint8Array([1, 64, 34, 128, 163, 94, 230, 128, 186, 8, 0, 0, 0, 0, 149, 0, 6, 241, 161, 10, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 94]);
        } else if (channelCount === 3) {
          return new Uint8Array([1, 64, 34, 128, 163, 94, 230, 128, 186, 8, 0, 0, 0, 0, 149, 0, 6, 241, 161, 10, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 94]);
        }
        break;
    }
    return void 0;
  }
};
var UINT32_MAX = Math.pow(2, 32) - 1;
var MP4 = class {
  static init() {
    MP4.types = {
      avc1: [],
      avcC: [],
      hvc1: [],
      hvcC: [],
      btrt: [],
      dinf: [],
      dref: [],
      esds: [],
      ftyp: [],
      hdlr: [],
      mdat: [],
      mdhd: [],
      mdia: [],
      mfhd: [],
      minf: [],
      moof: [],
      moov: [],
      mp4a: [],
      ".mp3": [],
      dac3: [],
      "ac-3": [],
      mvex: [],
      mvhd: [],
      pasp: [],
      sdtp: [],
      stbl: [],
      stco: [],
      stsc: [],
      stsd: [],
      stsz: [],
      stts: [],
      tfdt: [],
      tfhd: [],
      traf: [],
      trak: [],
      trun: [],
      trex: [],
      tkhd: [],
      vmhd: [],
      smhd: []
    };
    let i;
    for (i in MP4.types) {
      if (MP4.types.hasOwnProperty(i)) {
        MP4.types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];
      }
    }
    const videoHdlr = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      118,
      105,
      100,
      101,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      86,
      105,
      100,
      101,
      111,
      72,
      97,
      110,
      100,
      108,
      101,
      114,
      0
    ]);
    const audioHdlr = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      115,
      111,
      117,
      110,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      83,
      111,
      117,
      110,
      100,
      72,
      97,
      110,
      100,
      108,
      101,
      114,
      0
    ]);
    MP4.HDLR_TYPES = {
      video: videoHdlr,
      audio: audioHdlr
    };
    const dref = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      12,
      117,
      114,
      108,
      32,
      0,
      0,
      0,
      1
    ]);
    const stco = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]);
    MP4.STTS = MP4.STSC = MP4.STCO = stco;
    MP4.STSZ = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]);
    MP4.VMHD = new Uint8Array([
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]);
    MP4.SMHD = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]);
    MP4.STSD = new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1
    ]);
    const majorBrand = new Uint8Array([105, 115, 111, 109]);
    const avc1Brand = new Uint8Array([97, 118, 99, 49]);
    const minorVersion = new Uint8Array([0, 0, 0, 1]);
    MP4.FTYP = MP4.box(MP4.types.ftyp, majorBrand, minorVersion, majorBrand, avc1Brand);
    MP4.DINF = MP4.box(MP4.types.dinf, MP4.box(MP4.types.dref, dref));
  }
  static box(type, ...payload) {
    let size = 8;
    let i = payload.length;
    const len = i;
    while (i--) {
      size += payload[i].byteLength;
    }
    const result = new Uint8Array(size);
    result[0] = size >> 24 & 255;
    result[1] = size >> 16 & 255;
    result[2] = size >> 8 & 255;
    result[3] = size & 255;
    result.set(type, 4);
    for (i = 0, size = 8; i < len; i++) {
      result.set(payload[i], size);
      size += payload[i].byteLength;
    }
    return result;
  }
  static hdlr(type) {
    return MP4.box(MP4.types.hdlr, MP4.HDLR_TYPES[type]);
  }
  static mdat(data) {
    return MP4.box(MP4.types.mdat, data);
  }
  static mdhd(timescale, duration) {
    duration *= timescale;
    const upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
    const lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
    return MP4.box(MP4.types.mdhd, new Uint8Array([
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      2,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      3,
      timescale >> 24 & 255,
      timescale >> 16 & 255,
      timescale >> 8 & 255,
      timescale & 255,
      upperWordDuration >> 24,
      upperWordDuration >> 16 & 255,
      upperWordDuration >> 8 & 255,
      upperWordDuration & 255,
      lowerWordDuration >> 24,
      lowerWordDuration >> 16 & 255,
      lowerWordDuration >> 8 & 255,
      lowerWordDuration & 255,
      85,
      196,
      0,
      0
    ]));
  }
  static mdia(track) {
    return MP4.box(MP4.types.mdia, MP4.mdhd(track.timescale || 0, track.duration || 0), MP4.hdlr(track.type), MP4.minf(track));
  }
  static mfhd(sequenceNumber) {
    return MP4.box(MP4.types.mfhd, new Uint8Array([
      0,
      0,
      0,
      0,
      sequenceNumber >> 24,
      sequenceNumber >> 16 & 255,
      sequenceNumber >> 8 & 255,
      sequenceNumber & 255
    ]));
  }
  static minf(track) {
    if (track.type === "audio") {
      return MP4.box(MP4.types.minf, MP4.box(MP4.types.smhd, MP4.SMHD), MP4.DINF, MP4.stbl(track));
    } else {
      return MP4.box(MP4.types.minf, MP4.box(MP4.types.vmhd, MP4.VMHD), MP4.DINF, MP4.stbl(track));
    }
  }
  static moof(sn, baseMediaDecodeTime, track) {
    return MP4.box(MP4.types.moof, MP4.mfhd(sn), MP4.traf(track, baseMediaDecodeTime));
  }
  static moov(tracks) {
    let i = tracks.length;
    const boxes = [];
    while (i--) {
      boxes[i] = MP4.trak(tracks[i]);
    }
    return MP4.box.apply(null, [MP4.types.moov, MP4.mvhd(tracks[0].timescale || 0, tracks[0].duration || 0)].concat(boxes).concat(MP4.mvex(tracks)));
  }
  static mvex(tracks) {
    let i = tracks.length;
    const boxes = [];
    while (i--) {
      boxes[i] = MP4.trex(tracks[i]);
    }
    return MP4.box.apply(null, [MP4.types.mvex, ...boxes]);
  }
  static mvhd(timescale, duration) {
    duration *= timescale;
    const upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
    const lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
    const bytes = new Uint8Array([
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      2,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      3,
      timescale >> 24 & 255,
      timescale >> 16 & 255,
      timescale >> 8 & 255,
      timescale & 255,
      upperWordDuration >> 24,
      upperWordDuration >> 16 & 255,
      upperWordDuration >> 8 & 255,
      upperWordDuration & 255,
      lowerWordDuration >> 24,
      lowerWordDuration >> 16 & 255,
      lowerWordDuration >> 8 & 255,
      lowerWordDuration & 255,
      0,
      1,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      64,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      255,
      255,
      255,
      255
    ]);
    return MP4.box(MP4.types.mvhd, bytes);
  }
  static sdtp(track) {
    const samples = track.samples || [];
    const bytes = new Uint8Array(4 + samples.length);
    let i;
    let flags;
    for (i = 0; i < samples.length; i++) {
      flags = samples[i].flags;
      bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;
    }
    return MP4.box(MP4.types.sdtp, bytes);
  }
  static stbl(track) {
    return MP4.box(MP4.types.stbl, MP4.stsd(track), MP4.box(MP4.types.stts, MP4.STTS), MP4.box(MP4.types.stsc, MP4.STSC), MP4.box(MP4.types.stsz, MP4.STSZ), MP4.box(MP4.types.stco, MP4.STCO));
  }
  static avc1(track) {
    let sps = [];
    let pps = [];
    let i;
    let data;
    let len;
    for (i = 0; i < track.sps.length; i++) {
      data = track.sps[i];
      len = data.byteLength;
      sps.push(len >>> 8 & 255);
      sps.push(len & 255);
      sps = sps.concat(Array.prototype.slice.call(data));
    }
    for (i = 0; i < track.pps.length; i++) {
      data = track.pps[i];
      len = data.byteLength;
      pps.push(len >>> 8 & 255);
      pps.push(len & 255);
      pps = pps.concat(Array.prototype.slice.call(data));
    }
    const avcc = MP4.box(MP4.types.avcC, new Uint8Array([
      1,
      sps[3],
      sps[4],
      sps[5],
      252 | 3,
      224 | track.sps.length
    ].concat(sps).concat([
      track.pps.length
    ]).concat(pps)));
    const width = track.width;
    const height = track.height;
    const hSpacing = track.pixelRatio[0];
    const vSpacing = track.pixelRatio[1];
    return MP4.box(MP4.types.avc1, new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      width >> 8 & 255,
      width & 255,
      height >> 8 & 255,
      height & 255,
      0,
      72,
      0,
      0,
      0,
      72,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      18,
      100,
      97,
      105,
      108,
      121,
      109,
      111,
      116,
      105,
      111,
      110,
      47,
      104,
      108,
      115,
      46,
      106,
      115,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      24,
      17,
      17
    ]), avcc, MP4.box(MP4.types.btrt, new Uint8Array([
      0,
      28,
      156,
      128,
      0,
      45,
      198,
      192,
      0,
      45,
      198,
      192
    ])), MP4.box(MP4.types.pasp, new Uint8Array([
      hSpacing >> 24,
      hSpacing >> 16 & 255,
      hSpacing >> 8 & 255,
      hSpacing & 255,
      vSpacing >> 24,
      vSpacing >> 16 & 255,
      vSpacing >> 8 & 255,
      vSpacing & 255
    ])));
  }
  static esds(track) {
    const config = track.config;
    return new Uint8Array([
      0,
      0,
      0,
      0,
      3,
      25,
      0,
      1,
      0,
      4,
      17,
      64,
      21,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      5,
      2,
      ...config,
      6,
      1,
      2
    ]);
  }
  static audioStsd(track) {
    const samplerate = track.samplerate || 0;
    return new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      track.channelCount || 0,
      0,
      16,
      0,
      0,
      0,
      0,
      samplerate >> 8 & 255,
      samplerate & 255,
      0,
      0
    ]);
  }
  static mp4a(track) {
    return MP4.box(MP4.types.mp4a, MP4.audioStsd(track), MP4.box(MP4.types.esds, MP4.esds(track)));
  }
  static mp3(track) {
    return MP4.box(MP4.types[".mp3"], MP4.audioStsd(track));
  }
  static ac3(track) {
    return MP4.box(MP4.types["ac-3"], MP4.audioStsd(track), MP4.box(MP4.types.dac3, track.config));
  }
  static stsd(track) {
    const {
      segmentCodec
    } = track;
    if (track.type === "audio") {
      if (segmentCodec === "aac") {
        return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp4a(track));
      }
      if (segmentCodec === "ac3" && track.config) {
        return MP4.box(MP4.types.stsd, MP4.STSD, MP4.ac3(track));
      }
      if (segmentCodec === "mp3" && track.codec === "mp3") {
        return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp3(track));
      }
    } else {
      if (track.pps && track.sps) {
        if (segmentCodec === "avc") {
          return MP4.box(MP4.types.stsd, MP4.STSD, MP4.avc1(track));
        }
        if (segmentCodec === "hevc" && track.vps) {
          return MP4.box(MP4.types.stsd, MP4.STSD, MP4.hvc1(track));
        }
      } else {
        throw new Error(`video track missing pps or sps`);
      }
    }
    throw new Error(`unsupported ${track.type} segment codec (${segmentCodec}/${track.codec})`);
  }
  static tkhd(track) {
    const id = track.id;
    const duration = (track.duration || 0) * (track.timescale || 0);
    const width = track.width || 0;
    const height = track.height || 0;
    const upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
    const lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
    return MP4.box(MP4.types.tkhd, new Uint8Array([
      1,
      0,
      0,
      7,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      2,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      3,
      id >> 24 & 255,
      id >> 16 & 255,
      id >> 8 & 255,
      id & 255,
      0,
      0,
      0,
      0,
      upperWordDuration >> 24,
      upperWordDuration >> 16 & 255,
      upperWordDuration >> 8 & 255,
      upperWordDuration & 255,
      lowerWordDuration >> 24,
      lowerWordDuration >> 16 & 255,
      lowerWordDuration >> 8 & 255,
      lowerWordDuration & 255,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      64,
      0,
      0,
      0,
      width >> 8 & 255,
      width & 255,
      0,
      0,
      height >> 8 & 255,
      height & 255,
      0,
      0
    ]));
  }
  static traf(track, baseMediaDecodeTime) {
    const sampleDependencyTable = MP4.sdtp(track);
    const id = track.id;
    const upperWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime / (UINT32_MAX + 1));
    const lowerWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime % (UINT32_MAX + 1));
    return MP4.box(MP4.types.traf, MP4.box(MP4.types.tfhd, new Uint8Array([
      0,
      0,
      0,
      0,
      id >> 24,
      id >> 16 & 255,
      id >> 8 & 255,
      id & 255
    ])), MP4.box(MP4.types.tfdt, new Uint8Array([
      1,
      0,
      0,
      0,
      upperWordBaseMediaDecodeTime >> 24,
      upperWordBaseMediaDecodeTime >> 16 & 255,
      upperWordBaseMediaDecodeTime >> 8 & 255,
      upperWordBaseMediaDecodeTime & 255,
      lowerWordBaseMediaDecodeTime >> 24,
      lowerWordBaseMediaDecodeTime >> 16 & 255,
      lowerWordBaseMediaDecodeTime >> 8 & 255,
      lowerWordBaseMediaDecodeTime & 255
    ])), MP4.trun(track, sampleDependencyTable.length + 16 + 20 + 8 + 16 + 8 + 8), sampleDependencyTable);
  }
  static trak(track) {
    track.duration = track.duration || 4294967295;
    return MP4.box(MP4.types.trak, MP4.tkhd(track), MP4.mdia(track));
  }
  static trex(track) {
    const id = track.id;
    return MP4.box(MP4.types.trex, new Uint8Array([
      0,
      0,
      0,
      0,
      id >> 24,
      id >> 16 & 255,
      id >> 8 & 255,
      id & 255,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      1
    ]));
  }
  static trun(track, offset) {
    const samples = track.samples || [];
    const len = samples.length;
    const arraylen = 12 + 16 * len;
    const array = new Uint8Array(arraylen);
    let i;
    let sample;
    let duration;
    let size;
    let flags;
    let cts;
    offset += 8 + arraylen;
    array.set([
      track.type === "video" ? 1 : 0,
      0,
      15,
      1,
      len >>> 24 & 255,
      len >>> 16 & 255,
      len >>> 8 & 255,
      len & 255,
      offset >>> 24 & 255,
      offset >>> 16 & 255,
      offset >>> 8 & 255,
      offset & 255
    ], 0);
    for (i = 0; i < len; i++) {
      sample = samples[i];
      duration = sample.duration;
      size = sample.size;
      flags = sample.flags;
      cts = sample.cts;
      array.set([
        duration >>> 24 & 255,
        duration >>> 16 & 255,
        duration >>> 8 & 255,
        duration & 255,
        size >>> 24 & 255,
        size >>> 16 & 255,
        size >>> 8 & 255,
        size & 255,
        flags.isLeading << 2 | flags.dependsOn,
        flags.isDependedOn << 6 | flags.hasRedundancy << 4 | flags.paddingValue << 1 | flags.isNonSync,
        flags.degradPrio & 240 << 8,
        flags.degradPrio & 15,
        cts >>> 24 & 255,
        cts >>> 16 & 255,
        cts >>> 8 & 255,
        cts & 255
      ], 12 + 16 * i);
    }
    return MP4.box(MP4.types.trun, array);
  }
  static initSegment(tracks) {
    if (!MP4.types) {
      MP4.init();
    }
    const movie = MP4.moov(tracks);
    const result = appendUint8Array(MP4.FTYP, movie);
    return result;
  }
  static hvc1(track) {
    const ps = track.params;
    const units = [track.vps, track.sps, track.pps];
    const NALuLengthSize = 4;
    const config = new Uint8Array([1, ps.general_profile_space << 6 | (ps.general_tier_flag ? 32 : 0) | ps.general_profile_idc, ps.general_profile_compatibility_flags[0], ps.general_profile_compatibility_flags[1], ps.general_profile_compatibility_flags[2], ps.general_profile_compatibility_flags[3], ps.general_constraint_indicator_flags[0], ps.general_constraint_indicator_flags[1], ps.general_constraint_indicator_flags[2], ps.general_constraint_indicator_flags[3], ps.general_constraint_indicator_flags[4], ps.general_constraint_indicator_flags[5], ps.general_level_idc, 240 | ps.min_spatial_segmentation_idc >> 8, 255 & ps.min_spatial_segmentation_idc, 252 | ps.parallelismType, 252 | ps.chroma_format_idc, 248 | ps.bit_depth_luma_minus8, 248 | ps.bit_depth_chroma_minus8, 0, parseInt(ps.frame_rate.fps), NALuLengthSize - 1 | ps.temporal_id_nested << 2 | ps.num_temporal_layers << 3 | (ps.frame_rate.fixed ? 64 : 0), units.length]);
    let length = config.length;
    for (let i = 0; i < units.length; i += 1) {
      length += 3;
      for (let j = 0; j < units[i].length; j += 1) {
        length += 2 + units[i][j].length;
      }
    }
    const hvcC = new Uint8Array(length);
    hvcC.set(config, 0);
    length = config.length;
    const iMax = units.length - 1;
    for (let i = 0; i < units.length; i += 1) {
      hvcC.set(new Uint8Array([32 + i | (i === iMax ? 128 : 0), 0, units[i].length]), length);
      length += 3;
      for (let j = 0; j < units[i].length; j += 1) {
        hvcC.set(new Uint8Array([units[i][j].length >> 8, units[i][j].length & 255]), length);
        length += 2;
        hvcC.set(units[i][j], length);
        length += units[i][j].length;
      }
    }
    const hvcc = MP4.box(MP4.types.hvcC, hvcC);
    const width = track.width;
    const height = track.height;
    const hSpacing = track.pixelRatio[0];
    const vSpacing = track.pixelRatio[1];
    return MP4.box(MP4.types.hvc1, new Uint8Array([
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      width >> 8 & 255,
      width & 255,
      height >> 8 & 255,
      height & 255,
      0,
      72,
      0,
      0,
      0,
      72,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      18,
      100,
      97,
      105,
      108,
      121,
      109,
      111,
      116,
      105,
      111,
      110,
      47,
      104,
      108,
      115,
      46,
      106,
      115,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      24,
      17,
      17
    ]), hvcc, MP4.box(MP4.types.btrt, new Uint8Array([
      0,
      28,
      156,
      128,
      0,
      45,
      198,
      192,
      0,
      45,
      198,
      192
    ])), MP4.box(MP4.types.pasp, new Uint8Array([
      hSpacing >> 24,
      hSpacing >> 16 & 255,
      hSpacing >> 8 & 255,
      hSpacing & 255,
      vSpacing >> 24,
      vSpacing >> 16 & 255,
      vSpacing >> 8 & 255,
      vSpacing & 255
    ])));
  }
};
MP4.types = void 0;
MP4.HDLR_TYPES = void 0;
MP4.STTS = void 0;
MP4.STSC = void 0;
MP4.STCO = void 0;
MP4.STSZ = void 0;
MP4.VMHD = void 0;
MP4.SMHD = void 0;
MP4.STSD = void 0;
MP4.FTYP = void 0;
MP4.DINF = void 0;
var MPEG_TS_CLOCK_FREQ_HZ = 9e4;
function toTimescaleFromBase(baseTime, destScale, srcBase = 1, round = false) {
  const result = baseTime * destScale * srcBase;
  return round ? Math.round(result) : result;
}
function toTimescaleFromScale(baseTime, destScale, srcScale = 1, round = false) {
  return toTimescaleFromBase(baseTime, destScale, 1 / srcScale, round);
}
function toMsFromMpegTsClock(baseTime, round = false) {
  return toTimescaleFromBase(baseTime, 1e3, 1 / MPEG_TS_CLOCK_FREQ_HZ, round);
}
function toMpegTsClockFromTimescale(baseTime, srcScale = 1) {
  return toTimescaleFromBase(baseTime, MPEG_TS_CLOCK_FREQ_HZ, 1 / srcScale);
}
var MAX_SILENT_FRAME_DURATION = 10 * 1e3;
var AAC_SAMPLES_PER_FRAME = 1024;
var MPEG_AUDIO_SAMPLE_PER_FRAME = 1152;
var AC3_SAMPLES_PER_FRAME = 1536;
var chromeVersion = null;
var safariWebkitVersion = null;
function createMp4Sample(isKeyframe, duration, size, cts) {
  return {
    duration,
    size,
    cts,
    flags: {
      isLeading: 0,
      isDependedOn: 0,
      hasRedundancy: 0,
      degradPrio: 0,
      dependsOn: isKeyframe ? 2 : 1,
      isNonSync: isKeyframe ? 0 : 1
    }
  };
}
var MP4Remuxer = class extends Logger {
  constructor(observer, config, typeSupported, logger2) {
    super("mp4-remuxer", logger2);
    this.observer = void 0;
    this.config = void 0;
    this.typeSupported = void 0;
    this.ISGenerated = false;
    this._initPTS = null;
    this._initDTS = null;
    this.nextVideoTs = null;
    this.nextAudioTs = null;
    this.videoSampleDuration = null;
    this.isAudioContiguous = false;
    this.isVideoContiguous = false;
    this.videoTrackConfig = void 0;
    this.observer = observer;
    this.config = config;
    this.typeSupported = typeSupported;
    this.ISGenerated = false;
    if (chromeVersion === null) {
      const userAgent = navigator.userAgent || "";
      const result = userAgent.match(/Chrome\/(\d+)/i);
      chromeVersion = result ? parseInt(result[1]) : 0;
    }
    if (safariWebkitVersion === null) {
      const result = navigator.userAgent.match(/Safari\/(\d+)/i);
      safariWebkitVersion = result ? parseInt(result[1]) : 0;
    }
  }
  destroy() {
    this.config = this.videoTrackConfig = this._initPTS = this._initDTS = null;
  }
  resetTimeStamp(defaultTimeStamp) {
    this.log("initPTS & initDTS reset");
    this._initPTS = this._initDTS = defaultTimeStamp;
  }
  resetNextTimestamp() {
    this.log("reset next timestamp");
    this.isVideoContiguous = false;
    this.isAudioContiguous = false;
  }
  resetInitSegment() {
    this.log("ISGenerated flag reset");
    this.ISGenerated = false;
    this.videoTrackConfig = void 0;
  }
  getVideoStartPts(videoSamples) {
    let rolloverDetected = false;
    const firstPts = videoSamples[0].pts;
    const startPTS = videoSamples.reduce((minPTS, sample) => {
      let pts = sample.pts;
      let delta = pts - minPTS;
      if (delta < -4294967296) {
        rolloverDetected = true;
        pts = normalizePts(pts, firstPts);
        delta = pts - minPTS;
      }
      if (delta > 0) {
        return minPTS;
      }
      return pts;
    }, firstPts);
    if (rolloverDetected) {
      this.debug("PTS rollover detected");
    }
    return startPTS;
  }
  remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, flush, playlistType) {
    let video;
    let audio;
    let initSegment;
    let text;
    let id3;
    let independent;
    let audioTimeOffset = timeOffset;
    let videoTimeOffset = timeOffset;
    const hasAudio = audioTrack.pid > -1;
    const hasVideo = videoTrack.pid > -1;
    const length = videoTrack.samples.length;
    const enoughAudioSamples = audioTrack.samples.length > 0;
    const enoughVideoSamples = flush && length > 0 || length > 1;
    const canRemuxAvc = (!hasAudio || enoughAudioSamples) && (!hasVideo || enoughVideoSamples) || this.ISGenerated || flush;
    if (canRemuxAvc) {
      if (this.ISGenerated) {
        var _videoTrack$pixelRati, _config$pixelRatio, _videoTrack$pixelRati2, _config$pixelRatio2;
        const config = this.videoTrackConfig;
        if (config && (videoTrack.width !== config.width || videoTrack.height !== config.height || ((_videoTrack$pixelRati = videoTrack.pixelRatio) == null ? void 0 : _videoTrack$pixelRati[0]) !== ((_config$pixelRatio = config.pixelRatio) == null ? void 0 : _config$pixelRatio[0]) || ((_videoTrack$pixelRati2 = videoTrack.pixelRatio) == null ? void 0 : _videoTrack$pixelRati2[1]) !== ((_config$pixelRatio2 = config.pixelRatio) == null ? void 0 : _config$pixelRatio2[1])) || !config && enoughVideoSamples || this.nextAudioTs === null && enoughAudioSamples) {
          this.resetInitSegment();
        }
      }
      if (!this.ISGenerated) {
        initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
      }
      const isVideoContiguous = this.isVideoContiguous;
      let firstKeyFrameIndex = -1;
      let firstKeyFramePTS;
      if (enoughVideoSamples) {
        firstKeyFrameIndex = findKeyframeIndex(videoTrack.samples);
        if (!isVideoContiguous && this.config.forceKeyFrameOnDiscontinuity) {
          independent = true;
          if (firstKeyFrameIndex > 0) {
            this.warn(`Dropped ${firstKeyFrameIndex} out of ${length} video samples due to a missing keyframe`);
            const startPTS = this.getVideoStartPts(videoTrack.samples);
            videoTrack.samples = videoTrack.samples.slice(firstKeyFrameIndex);
            videoTrack.dropped += firstKeyFrameIndex;
            videoTimeOffset += (videoTrack.samples[0].pts - startPTS) / videoTrack.inputTimeScale;
            firstKeyFramePTS = videoTimeOffset;
          } else if (firstKeyFrameIndex === -1) {
            this.warn(`No keyframe found out of ${length} video samples`);
            independent = false;
          }
        }
      }
      if (this.ISGenerated) {
        if (enoughAudioSamples && enoughVideoSamples) {
          const startPTS = this.getVideoStartPts(videoTrack.samples);
          const tsDelta = normalizePts(audioTrack.samples[0].pts, startPTS) - startPTS;
          const audiovideoTimestampDelta = tsDelta / videoTrack.inputTimeScale;
          audioTimeOffset += Math.max(0, audiovideoTimestampDelta);
          videoTimeOffset += Math.max(0, -audiovideoTimestampDelta);
        }
        if (enoughAudioSamples) {
          if (!audioTrack.samplerate) {
            this.warn("regenerate InitSegment as audio detected");
            initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
          }
          audio = this.remuxAudio(audioTrack, audioTimeOffset, this.isAudioContiguous, accurateTimeOffset, hasVideo || enoughVideoSamples || playlistType === PlaylistLevelType.AUDIO ? videoTimeOffset : void 0);
          if (enoughVideoSamples) {
            const audioTrackLength = audio ? audio.endPTS - audio.startPTS : 0;
            if (!videoTrack.inputTimeScale) {
              this.warn("regenerate InitSegment as video detected");
              initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
            }
            video = this.remuxVideo(videoTrack, videoTimeOffset, isVideoContiguous, audioTrackLength);
          }
        } else if (enoughVideoSamples) {
          video = this.remuxVideo(videoTrack, videoTimeOffset, isVideoContiguous, 0);
        }
        if (video) {
          video.firstKeyFrame = firstKeyFrameIndex;
          video.independent = firstKeyFrameIndex !== -1;
          video.firstKeyFramePTS = firstKeyFramePTS;
        }
      }
    }
    if (this.ISGenerated && this._initPTS && this._initDTS) {
      if (id3Track.samples.length) {
        id3 = flushTextTrackMetadataCueSamples(id3Track, timeOffset, this._initPTS, this._initDTS);
      }
      if (textTrack.samples.length) {
        text = flushTextTrackUserdataCueSamples(textTrack, timeOffset, this._initPTS);
      }
    }
    return {
      audio,
      video,
      initSegment,
      independent,
      text,
      id3
    };
  }
  generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset) {
    const audioSamples = audioTrack.samples;
    const videoSamples = videoTrack.samples;
    const typeSupported = this.typeSupported;
    const tracks = {};
    const _initPTS = this._initPTS;
    let computePTSDTS = !_initPTS || accurateTimeOffset;
    let container = "audio/mp4";
    let initPTS;
    let initDTS;
    let timescale;
    let trackId;
    if (computePTSDTS) {
      initPTS = initDTS = Infinity;
    }
    if (audioTrack.config && audioSamples.length) {
      audioTrack.timescale = audioTrack.samplerate;
      switch (audioTrack.segmentCodec) {
        case "mp3":
          if (typeSupported.mpeg) {
            container = "audio/mpeg";
            audioTrack.codec = "";
          } else if (typeSupported.mp3) {
            audioTrack.codec = "mp3";
          }
          break;
        case "ac3":
          audioTrack.codec = "ac-3";
          break;
      }
      tracks.audio = {
        id: "audio",
        container,
        codec: audioTrack.codec,
        initSegment: audioTrack.segmentCodec === "mp3" && typeSupported.mpeg ? new Uint8Array(0) : MP4.initSegment([audioTrack]),
        metadata: {
          channelCount: audioTrack.channelCount
        }
      };
      if (computePTSDTS) {
        trackId = audioTrack.id;
        timescale = audioTrack.inputTimeScale;
        if (!_initPTS || timescale !== _initPTS.timescale) {
          initPTS = initDTS = audioSamples[0].pts - Math.round(timescale * timeOffset);
        } else {
          computePTSDTS = false;
        }
      }
    }
    if (videoTrack.sps && videoTrack.pps && videoSamples.length) {
      videoTrack.timescale = videoTrack.inputTimeScale;
      tracks.video = {
        id: "main",
        container: "video/mp4",
        codec: videoTrack.codec,
        initSegment: MP4.initSegment([videoTrack]),
        metadata: {
          width: videoTrack.width,
          height: videoTrack.height
        }
      };
      if (computePTSDTS) {
        trackId = videoTrack.id;
        timescale = videoTrack.inputTimeScale;
        if (!_initPTS || timescale !== _initPTS.timescale) {
          const startPTS = this.getVideoStartPts(videoSamples);
          const startOffset = Math.round(timescale * timeOffset);
          initDTS = Math.min(initDTS, normalizePts(videoSamples[0].dts, startPTS) - startOffset);
          initPTS = Math.min(initPTS, startPTS - startOffset);
        } else {
          computePTSDTS = false;
        }
      }
      this.videoTrackConfig = {
        width: videoTrack.width,
        height: videoTrack.height,
        pixelRatio: videoTrack.pixelRatio
      };
    }
    if (Object.keys(tracks).length) {
      this.ISGenerated = true;
      if (computePTSDTS) {
        this._initPTS = {
          baseTime: initPTS,
          timescale
        };
        this._initDTS = {
          baseTime: initDTS,
          timescale
        };
      } else {
        initPTS = timescale = void 0;
      }
      return {
        tracks,
        initPTS,
        timescale,
        trackId
      };
    }
  }
  remuxVideo(track, timeOffset, contiguous, audioTrackLength) {
    const timeScale = track.inputTimeScale;
    const inputSamples = track.samples;
    const outputSamples = [];
    const nbSamples = inputSamples.length;
    const initPTS = this._initPTS;
    const initTime = initPTS.baseTime * timeScale / initPTS.timescale;
    let nextVideoTs = this.nextVideoTs;
    let offset = 8;
    let mp4SampleDuration = this.videoSampleDuration;
    let firstDTS;
    let lastDTS;
    let minPTS = Number.POSITIVE_INFINITY;
    let maxPTS = Number.NEGATIVE_INFINITY;
    let sortSamples = false;
    if (!contiguous || nextVideoTs === null) {
      const pts = initTime + timeOffset * timeScale;
      const cts = inputSamples[0].pts - normalizePts(inputSamples[0].dts, inputSamples[0].pts);
      if (chromeVersion && nextVideoTs !== null && Math.abs(pts - cts - (nextVideoTs + initTime)) < 15e3) {
        contiguous = true;
      } else {
        nextVideoTs = pts - cts - initTime;
      }
    }
    const nextVideoPts = nextVideoTs + initTime;
    for (let i = 0; i < nbSamples; i++) {
      const sample = inputSamples[i];
      sample.pts = normalizePts(sample.pts, nextVideoPts);
      sample.dts = normalizePts(sample.dts, nextVideoPts);
      if (sample.dts < inputSamples[i > 0 ? i - 1 : i].dts) {
        sortSamples = true;
      }
    }
    if (sortSamples) {
      inputSamples.sort(function(a, b) {
        const deltadts = a.dts - b.dts;
        const deltapts = a.pts - b.pts;
        return deltadts || deltapts;
      });
    }
    firstDTS = inputSamples[0].dts;
    lastDTS = inputSamples[inputSamples.length - 1].dts;
    const inputDuration = lastDTS - firstDTS;
    const averageSampleDuration = inputDuration ? Math.round(inputDuration / (nbSamples - 1)) : mp4SampleDuration || track.inputTimeScale / 30;
    if (contiguous) {
      const delta = firstDTS - nextVideoPts;
      const foundHole = delta > averageSampleDuration;
      const foundOverlap = delta < -1;
      if (foundHole || foundOverlap) {
        if (foundHole) {
          this.warn(`${(track.segmentCodec || "").toUpperCase()}: ${toMsFromMpegTsClock(delta, true)} ms (${delta}dts) hole between fragments detected at ${timeOffset.toFixed(3)}`);
        } else {
          this.warn(`${(track.segmentCodec || "").toUpperCase()}: ${toMsFromMpegTsClock(-delta, true)} ms (${delta}dts) overlapping between fragments detected at ${timeOffset.toFixed(3)}`);
        }
        if (!foundOverlap || nextVideoPts >= inputSamples[0].pts || chromeVersion) {
          firstDTS = nextVideoPts;
          const firstPTS = inputSamples[0].pts - delta;
          if (foundHole) {
            inputSamples[0].dts = firstDTS;
            inputSamples[0].pts = firstPTS;
          } else {
            let isPTSOrderRetained = true;
            for (let i = 0; i < inputSamples.length; i++) {
              if (inputSamples[i].dts > firstPTS && isPTSOrderRetained) {
                break;
              }
              const prevPTS = inputSamples[i].pts;
              inputSamples[i].dts -= delta;
              inputSamples[i].pts -= delta;
              if (i < inputSamples.length - 1) {
                const nextSamplePTS = inputSamples[i + 1].pts;
                const currentSamplePTS = inputSamples[i].pts;
                const currentOrder = nextSamplePTS <= currentSamplePTS;
                const prevOrder = nextSamplePTS <= prevPTS;
                isPTSOrderRetained = currentOrder == prevOrder;
              }
            }
          }
          this.log(`Video: Initial PTS/DTS adjusted: ${toMsFromMpegTsClock(firstPTS, true)}/${toMsFromMpegTsClock(firstDTS, true)}, delta: ${toMsFromMpegTsClock(delta, true)} ms`);
        }
      }
    }
    firstDTS = Math.max(0, firstDTS);
    let nbNalu = 0;
    let naluLen = 0;
    let dtsStep = firstDTS;
    for (let i = 0; i < nbSamples; i++) {
      const sample = inputSamples[i];
      const units = sample.units;
      const nbUnits = units.length;
      let sampleLen = 0;
      for (let j = 0; j < nbUnits; j++) {
        sampleLen += units[j].data.length;
      }
      naluLen += sampleLen;
      nbNalu += nbUnits;
      sample.length = sampleLen;
      if (sample.dts < dtsStep) {
        sample.dts = dtsStep;
        dtsStep += averageSampleDuration / 4 | 0 || 1;
      } else {
        dtsStep = sample.dts;
      }
      minPTS = Math.min(sample.pts, minPTS);
      maxPTS = Math.max(sample.pts, maxPTS);
    }
    lastDTS = inputSamples[nbSamples - 1].dts;
    const mdatSize = naluLen + 4 * nbNalu + 8;
    let mdat;
    try {
      mdat = new Uint8Array(mdatSize);
    } catch (err) {
      this.observer.emit(Events.ERROR, Events.ERROR, {
        type: ErrorTypes.MUX_ERROR,
        details: ErrorDetails.REMUX_ALLOC_ERROR,
        fatal: false,
        error: err,
        bytes: mdatSize,
        reason: `fail allocating video mdat ${mdatSize}`
      });
      return;
    }
    const view2 = new DataView(mdat.buffer);
    view2.setUint32(0, mdatSize);
    mdat.set(MP4.types.mdat, 4);
    let stretchedLastFrame = false;
    let minDtsDelta = Number.POSITIVE_INFINITY;
    let minPtsDelta = Number.POSITIVE_INFINITY;
    let maxDtsDelta = Number.NEGATIVE_INFINITY;
    let maxPtsDelta = Number.NEGATIVE_INFINITY;
    for (let i = 0; i < nbSamples; i++) {
      const VideoSample = inputSamples[i];
      const VideoSampleUnits = VideoSample.units;
      let mp4SampleLength = 0;
      for (let j = 0, nbUnits = VideoSampleUnits.length; j < nbUnits; j++) {
        const unit = VideoSampleUnits[j];
        const unitData = unit.data;
        const unitDataLen = unit.data.byteLength;
        view2.setUint32(offset, unitDataLen);
        offset += 4;
        mdat.set(unitData, offset);
        offset += unitDataLen;
        mp4SampleLength += 4 + unitDataLen;
      }
      let ptsDelta;
      if (i < nbSamples - 1) {
        mp4SampleDuration = inputSamples[i + 1].dts - VideoSample.dts;
        ptsDelta = inputSamples[i + 1].pts - VideoSample.pts;
      } else {
        const config = this.config;
        const lastFrameDuration = i > 0 ? VideoSample.dts - inputSamples[i - 1].dts : averageSampleDuration;
        ptsDelta = i > 0 ? VideoSample.pts - inputSamples[i - 1].pts : averageSampleDuration;
        if (config.stretchShortVideoTrack && this.nextAudioTs !== null) {
          const gapTolerance = Math.floor(config.maxBufferHole * timeScale);
          const deltaToFrameEnd = (audioTrackLength ? minPTS + audioTrackLength * timeScale : this.nextAudioTs + initTime) - VideoSample.pts;
          if (deltaToFrameEnd > gapTolerance) {
            mp4SampleDuration = deltaToFrameEnd - lastFrameDuration;
            if (mp4SampleDuration < 0) {
              mp4SampleDuration = lastFrameDuration;
            } else {
              stretchedLastFrame = true;
            }
            this.log(`It is approximately ${deltaToFrameEnd / 90} ms to the next segment; using duration ${mp4SampleDuration / 90} ms for the last video frame.`);
          } else {
            mp4SampleDuration = lastFrameDuration;
          }
        } else {
          mp4SampleDuration = lastFrameDuration;
        }
      }
      const compositionTimeOffset = Math.round(VideoSample.pts - VideoSample.dts);
      minDtsDelta = Math.min(minDtsDelta, mp4SampleDuration);
      maxDtsDelta = Math.max(maxDtsDelta, mp4SampleDuration);
      minPtsDelta = Math.min(minPtsDelta, ptsDelta);
      maxPtsDelta = Math.max(maxPtsDelta, ptsDelta);
      outputSamples.push(createMp4Sample(VideoSample.key, mp4SampleDuration, mp4SampleLength, compositionTimeOffset));
    }
    if (outputSamples.length) {
      if (chromeVersion) {
        if (chromeVersion < 70) {
          const flags = outputSamples[0].flags;
          flags.dependsOn = 2;
          flags.isNonSync = 0;
        }
      } else if (safariWebkitVersion) {
        if (maxPtsDelta - minPtsDelta < maxDtsDelta - minDtsDelta && averageSampleDuration / maxDtsDelta < 0.025 && outputSamples[0].cts === 0) {
          this.warn("Found irregular gaps in sample duration. Using PTS instead of DTS to determine MP4 sample duration.");
          let dts = firstDTS;
          for (let i = 0, len = outputSamples.length; i < len; i++) {
            const nextDts = dts + outputSamples[i].duration;
            const pts = dts + outputSamples[i].cts;
            if (i < len - 1) {
              const nextPts = nextDts + outputSamples[i + 1].cts;
              outputSamples[i].duration = nextPts - pts;
            } else {
              outputSamples[i].duration = i ? outputSamples[i - 1].duration : averageSampleDuration;
            }
            outputSamples[i].cts = 0;
            dts = nextDts;
          }
        }
      }
    }
    mp4SampleDuration = stretchedLastFrame || !mp4SampleDuration ? averageSampleDuration : mp4SampleDuration;
    const endDTS = lastDTS + mp4SampleDuration;
    this.nextVideoTs = nextVideoTs = endDTS - initTime;
    this.videoSampleDuration = mp4SampleDuration;
    this.isVideoContiguous = true;
    const moof = MP4.moof(track.sequenceNumber++, firstDTS, _extends(track, {
      samples: outputSamples
    }));
    const type = "video";
    const data = {
      data1: moof,
      data2: mdat,
      startPTS: (minPTS - initTime) / timeScale,
      endPTS: (maxPTS + mp4SampleDuration - initTime) / timeScale,
      startDTS: (firstDTS - initTime) / timeScale,
      endDTS: nextVideoTs / timeScale,
      type,
      hasAudio: false,
      hasVideo: true,
      nb: outputSamples.length,
      dropped: track.dropped
    };
    track.samples = [];
    track.dropped = 0;
    return data;
  }
  getSamplesPerFrame(track) {
    switch (track.segmentCodec) {
      case "mp3":
        return MPEG_AUDIO_SAMPLE_PER_FRAME;
      case "ac3":
        return AC3_SAMPLES_PER_FRAME;
      default:
        return AAC_SAMPLES_PER_FRAME;
    }
  }
  remuxAudio(track, timeOffset, contiguous, accurateTimeOffset, videoTimeOffset) {
    const inputTimeScale = track.inputTimeScale;
    const mp4timeScale = track.samplerate ? track.samplerate : inputTimeScale;
    const scaleFactor = inputTimeScale / mp4timeScale;
    const mp4SampleDuration = this.getSamplesPerFrame(track);
    const inputSampleDuration = mp4SampleDuration * scaleFactor;
    const initPTS = this._initPTS;
    const rawMPEG = track.segmentCodec === "mp3" && this.typeSupported.mpeg;
    const outputSamples = [];
    const alignedWithVideo = videoTimeOffset !== void 0;
    let inputSamples = track.samples;
    let offset = rawMPEG ? 0 : 8;
    let nextAudioTs = this.nextAudioTs || -1;
    const initTime = initPTS.baseTime * inputTimeScale / initPTS.timescale;
    const timeOffsetMpegTS = initTime + timeOffset * inputTimeScale;
    this.isAudioContiguous = contiguous = contiguous || inputSamples.length && nextAudioTs > 0 && (accurateTimeOffset && Math.abs(timeOffsetMpegTS - (nextAudioTs + initTime)) < 9e3 || Math.abs(normalizePts(inputSamples[0].pts, timeOffsetMpegTS) - (nextAudioTs + initTime)) < 20 * inputSampleDuration);
    inputSamples.forEach(function(sample) {
      sample.pts = normalizePts(sample.pts, timeOffsetMpegTS);
    });
    if (!contiguous || nextAudioTs < 0) {
      inputSamples = inputSamples.filter((sample) => sample.pts >= 0);
      if (!inputSamples.length) {
        return;
      }
      if (videoTimeOffset === 0) {
        nextAudioTs = 0;
      } else if (accurateTimeOffset && !alignedWithVideo) {
        nextAudioTs = Math.max(0, timeOffsetMpegTS - initTime);
      } else {
        nextAudioTs = inputSamples[0].pts - initTime;
      }
    }
    if (track.segmentCodec === "aac") {
      const maxAudioFramesDrift = this.config.maxAudioFramesDrift;
      for (let i = 0, nextPts = nextAudioTs + initTime; i < inputSamples.length; i++) {
        const sample = inputSamples[i];
        const pts = sample.pts;
        const delta = pts - nextPts;
        const duration = Math.abs(1e3 * delta / inputTimeScale);
        if (delta <= -maxAudioFramesDrift * inputSampleDuration && alignedWithVideo) {
          if (i === 0) {
            this.warn(`Audio frame @ ${(pts / inputTimeScale).toFixed(3)}s overlaps marker by ${Math.round(1e3 * delta / inputTimeScale)} ms.`);
            this.nextAudioTs = nextAudioTs = pts - initTime;
            nextPts = pts;
          }
        } else if (delta >= maxAudioFramesDrift * inputSampleDuration && duration < MAX_SILENT_FRAME_DURATION && alignedWithVideo) {
          let missing = Math.round(delta / inputSampleDuration);
          nextPts = pts - missing * inputSampleDuration;
          while (nextPts < 0 && missing && inputSampleDuration) {
            missing--;
            nextPts += inputSampleDuration;
          }
          if (i === 0) {
            this.nextAudioTs = nextAudioTs = nextPts - initTime;
          }
          this.warn(`Injecting ${missing} audio frames @ ${((nextPts - initTime) / inputTimeScale).toFixed(3)}s due to ${Math.round(1e3 * delta / inputTimeScale)} ms gap.`);
          for (let j = 0; j < missing; j++) {
            let fillFrame = AAC.getSilentFrame(track.parsedCodec || track.manifestCodec || track.codec, track.channelCount);
            if (!fillFrame) {
              this.log("Unable to get silent frame for given audio codec; duplicating last frame instead.");
              fillFrame = sample.unit.subarray();
            }
            inputSamples.splice(i, 0, {
              unit: fillFrame,
              pts: nextPts
            });
            nextPts += inputSampleDuration;
            i++;
          }
        }
        sample.pts = nextPts;
        nextPts += inputSampleDuration;
      }
    }
    let firstPTS = null;
    let lastPTS = null;
    let mdat;
    let mdatSize = 0;
    let sampleLength = inputSamples.length;
    while (sampleLength--) {
      mdatSize += inputSamples[sampleLength].unit.byteLength;
    }
    for (let j = 0, _nbSamples = inputSamples.length; j < _nbSamples; j++) {
      const audioSample = inputSamples[j];
      const unit = audioSample.unit;
      let pts = audioSample.pts;
      if (lastPTS !== null) {
        const prevSample = outputSamples[j - 1];
        prevSample.duration = Math.round((pts - lastPTS) / scaleFactor);
      } else {
        if (contiguous && track.segmentCodec === "aac") {
          pts = nextAudioTs + initTime;
        }
        firstPTS = pts;
        if (mdatSize > 0) {
          mdatSize += offset;
          try {
            mdat = new Uint8Array(mdatSize);
          } catch (err) {
            this.observer.emit(Events.ERROR, Events.ERROR, {
              type: ErrorTypes.MUX_ERROR,
              details: ErrorDetails.REMUX_ALLOC_ERROR,
              fatal: false,
              error: err,
              bytes: mdatSize,
              reason: `fail allocating audio mdat ${mdatSize}`
            });
            return;
          }
          if (!rawMPEG) {
            const view2 = new DataView(mdat.buffer);
            view2.setUint32(0, mdatSize);
            mdat.set(MP4.types.mdat, 4);
          }
        } else {
          return;
        }
      }
      mdat.set(unit, offset);
      const unitLen = unit.byteLength;
      offset += unitLen;
      outputSamples.push(createMp4Sample(true, mp4SampleDuration, unitLen, 0));
      lastPTS = pts;
    }
    const nbSamples = outputSamples.length;
    if (!nbSamples) {
      return;
    }
    const lastSample = outputSamples[outputSamples.length - 1];
    nextAudioTs = lastPTS - initTime;
    this.nextAudioTs = nextAudioTs + scaleFactor * lastSample.duration;
    const moof = rawMPEG ? new Uint8Array(0) : MP4.moof(track.sequenceNumber++, firstPTS / scaleFactor, _extends({}, track, {
      samples: outputSamples
    }));
    track.samples = [];
    const start = (firstPTS - initTime) / inputTimeScale;
    const end = nextAudioTs / inputTimeScale;
    const type = "audio";
    const audioData = {
      data1: moof,
      data2: mdat,
      startPTS: start,
      endPTS: end,
      startDTS: start,
      endDTS: end,
      type,
      hasAudio: true,
      hasVideo: false,
      nb: nbSamples
    };
    this.isAudioContiguous = true;
    return audioData;
  }
};
function normalizePts(value, reference) {
  let offset;
  if (reference === null) {
    return value;
  }
  if (reference < value) {
    offset = -8589934592;
  } else {
    offset = 8589934592;
  }
  while (Math.abs(value - reference) > 4294967296) {
    value += offset;
  }
  return value;
}
function findKeyframeIndex(samples) {
  for (let i = 0; i < samples.length; i++) {
    if (samples[i].key) {
      return i;
    }
  }
  return -1;
}
function flushTextTrackMetadataCueSamples(track, timeOffset, initPTS, initDTS) {
  const length = track.samples.length;
  if (!length) {
    return;
  }
  const inputTimeScale = track.inputTimeScale;
  for (let index = 0; index < length; index++) {
    const sample = track.samples[index];
    sample.pts = normalizePts(sample.pts - initPTS.baseTime * inputTimeScale / initPTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
    sample.dts = normalizePts(sample.dts - initDTS.baseTime * inputTimeScale / initDTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
  }
  const samples = track.samples;
  track.samples = [];
  return {
    samples
  };
}
function flushTextTrackUserdataCueSamples(track, timeOffset, initPTS) {
  const length = track.samples.length;
  if (!length) {
    return;
  }
  const inputTimeScale = track.inputTimeScale;
  for (let index = 0; index < length; index++) {
    const sample = track.samples[index];
    sample.pts = normalizePts(sample.pts - initPTS.baseTime * inputTimeScale / initPTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
  }
  track.samples.sort((a, b) => a.pts - b.pts);
  const samples = track.samples;
  track.samples = [];
  return {
    samples
  };
}
var PassThroughRemuxer = class extends Logger {
  constructor(observer, config, typeSupported, logger2) {
    super("passthrough-remuxer", logger2);
    this.emitInitSegment = false;
    this.audioCodec = void 0;
    this.videoCodec = void 0;
    this.initData = void 0;
    this.initPTS = null;
    this.initTracks = void 0;
    this.lastEndTime = null;
    this.isVideoContiguous = false;
  }
  destroy() {
  }
  resetTimeStamp(defaultInitPTS) {
    this.lastEndTime = null;
    const initPTS = this.initPTS;
    if (initPTS && defaultInitPTS) {
      if (initPTS.baseTime === defaultInitPTS.baseTime && initPTS.timescale === defaultInitPTS.timescale) {
        return;
      }
    }
    this.initPTS = defaultInitPTS;
  }
  resetNextTimestamp() {
    this.isVideoContiguous = false;
    this.lastEndTime = null;
  }
  resetInitSegment(initSegment, audioCodec, videoCodec, decryptdata) {
    this.audioCodec = audioCodec;
    this.videoCodec = videoCodec;
    this.generateInitSegment(patchEncyptionData(initSegment, decryptdata));
    this.emitInitSegment = true;
  }
  generateInitSegment(initSegment) {
    let {
      audioCodec,
      videoCodec
    } = this;
    if (!(initSegment != null && initSegment.byteLength)) {
      this.initTracks = void 0;
      this.initData = void 0;
      return;
    }
    const initData = this.initData = parseInitSegment(initSegment);
    if (initData.audio) {
      audioCodec = getParsedTrackCodec(initData.audio, ElementaryStreamTypes.AUDIO, this);
    }
    if (initData.video) {
      videoCodec = getParsedTrackCodec(initData.video, ElementaryStreamTypes.VIDEO, this);
    }
    const tracks = {};
    if (initData.audio && initData.video) {
      tracks.audiovideo = {
        container: "video/mp4",
        codec: audioCodec + "," + videoCodec,
        supplemental: initData.video.supplemental,
        initSegment,
        id: "main"
      };
    } else if (initData.audio) {
      tracks.audio = {
        container: "audio/mp4",
        codec: audioCodec,
        initSegment,
        id: "audio"
      };
    } else if (initData.video) {
      tracks.video = {
        container: "video/mp4",
        codec: videoCodec,
        supplemental: initData.video.supplemental,
        initSegment,
        id: "main"
      };
    } else {
      this.warn("initSegment does not contain moov or trak boxes.");
    }
    this.initTracks = tracks;
  }
  remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset) {
    var _initData, _initData2;
    let {
      initPTS,
      lastEndTime
    } = this;
    const result = {
      audio: void 0,
      video: void 0,
      text: textTrack,
      id3: id3Track,
      initSegment: void 0
    };
    if (!isFiniteNumber(lastEndTime)) {
      lastEndTime = this.lastEndTime = timeOffset || 0;
    }
    const data = videoTrack.samples;
    if (!(data != null && data.length)) {
      return result;
    }
    const initSegment = {
      initPTS: void 0,
      timescale: void 0,
      trackId: void 0
    };
    let initData = this.initData;
    if (!((_initData = initData) != null && _initData.length)) {
      this.generateInitSegment(data);
      initData = this.initData;
    }
    if (!((_initData2 = initData) != null && _initData2.length)) {
      this.warn("Failed to generate initSegment.");
      return result;
    }
    if (this.emitInitSegment) {
      initSegment.tracks = this.initTracks;
      this.emitInitSegment = false;
    }
    const trackSampleData = getSampleData(data, initData, this);
    const audioSampleTimestamps = initData.audio ? trackSampleData[initData.audio.id] : null;
    const videoSampleTimestamps = initData.video ? trackSampleData[initData.video.id] : null;
    const videoStartTime = toStartEndOrDefault(videoSampleTimestamps, Infinity);
    const audioStartTime = toStartEndOrDefault(audioSampleTimestamps, Infinity);
    const videoEndTime = toStartEndOrDefault(videoSampleTimestamps, 0, true);
    const audioEndTime = toStartEndOrDefault(audioSampleTimestamps, 0, true);
    let baseOffsetSamples;
    let decodeTime = timeOffset;
    let duration = 0;
    if (audioSampleTimestamps && (!videoSampleTimestamps || !initPTS && audioStartTime < videoStartTime || initPTS && initPTS.trackId === initData.audio.id)) {
      initSegment.trackId = initData.audio.id;
      baseOffsetSamples = audioSampleTimestamps;
      duration = audioEndTime - audioStartTime;
    } else if (videoSampleTimestamps) {
      initSegment.trackId = initData.video.id;
      baseOffsetSamples = videoSampleTimestamps;
      duration = videoEndTime - videoStartTime;
    }
    if (baseOffsetSamples) {
      const timescale = baseOffsetSamples.timescale;
      decodeTime = baseOffsetSamples.start / timescale;
      initSegment.initPTS = baseOffsetSamples.start - timeOffset * timescale;
      initSegment.timescale = timescale;
      if (!initPTS) {
        this.initPTS = initPTS = {
          baseTime: initSegment.initPTS,
          timescale,
          trackId: initSegment.trackId
        };
      }
    }
    if ((accurateTimeOffset || !initPTS) && (isInvalidInitPts(initPTS, decodeTime, timeOffset, duration) || initSegment.timescale !== initPTS.timescale)) {
      initSegment.initPTS = decodeTime - timeOffset;
      initSegment.timescale = 1;
      if (initPTS && initPTS.timescale === 1) {
        this.warn(`Adjusting initPTS @${timeOffset} from ${initPTS.baseTime / initPTS.timescale} to ${initSegment.initPTS}`);
      }
      this.initPTS = initPTS = {
        baseTime: initSegment.initPTS,
        timescale: 1
      };
    }
    const startTime = audioTrack ? decodeTime - initPTS.baseTime / initPTS.timescale : lastEndTime;
    const endTime = startTime + duration;
    if (duration > 0) {
      this.lastEndTime = endTime;
    } else {
      this.warn("Duration parsed from mp4 should be greater than zero");
      this.resetNextTimestamp();
    }
    const hasAudio = !!initData.audio;
    const hasVideo = !!initData.video;
    let type = "";
    if (hasAudio) {
      type += "audio";
    }
    if (hasVideo) {
      type += "video";
    }
    const track = {
      data1: data,
      startPTS: startTime,
      startDTS: startTime,
      endPTS: endTime,
      endDTS: endTime,
      type,
      hasAudio,
      hasVideo,
      nb: 1,
      dropped: 0
    };
    result.audio = hasAudio && !hasVideo ? track : void 0;
    result.video = hasVideo ? track : void 0;
    const videoSampleCount = videoSampleTimestamps == null ? void 0 : videoSampleTimestamps.sampleCount;
    if (videoSampleCount) {
      const firstKeyFrame = videoSampleTimestamps.keyFrameIndex;
      const independent = firstKeyFrame !== -1;
      track.nb = videoSampleCount;
      track.dropped = firstKeyFrame === 0 || this.isVideoContiguous ? 0 : independent ? firstKeyFrame : videoSampleCount;
      track.independent = independent;
      track.firstKeyFrame = firstKeyFrame;
      if (independent && videoSampleTimestamps.keyFrameStart) {
        track.firstKeyFramePTS = (videoSampleTimestamps.keyFrameStart - initPTS.baseTime) / initPTS.timescale;
      }
      if (!this.isVideoContiguous) {
        result.independent = independent;
      }
      this.isVideoContiguous || (this.isVideoContiguous = independent);
      if (track.dropped) {
        this.warn(`fmp4 does not start with IDR: firstIDR ${firstKeyFrame}/${videoSampleCount} dropped: ${track.dropped} start: ${track.firstKeyFramePTS || "NA"}`);
      }
    }
    result.initSegment = initSegment;
    result.id3 = flushTextTrackMetadataCueSamples(id3Track, timeOffset, initPTS, initPTS);
    if (textTrack.samples.length) {
      result.text = flushTextTrackUserdataCueSamples(textTrack, timeOffset, initPTS);
    }
    return result;
  }
};
function toStartEndOrDefault(trackTimes, defaultValue, end = false) {
  return (trackTimes == null ? void 0 : trackTimes.start) !== void 0 ? (trackTimes.start + (end ? trackTimes.duration : 0)) / trackTimes.timescale : defaultValue;
}
function isInvalidInitPts(initPTS, startDTS, timeOffset, duration) {
  if (initPTS === null) {
    return true;
  }
  const minDuration = Math.max(duration, 1);
  const startTime = startDTS - initPTS.baseTime / initPTS.timescale;
  return Math.abs(startTime - timeOffset) > minDuration;
}
function getParsedTrackCodec(track, type, logger2) {
  const parsedCodec = track == null ? void 0 : track.codec;
  if (parsedCodec && parsedCodec.length > 4) {
    return parsedCodec;
  }
  if (type === ElementaryStreamTypes.AUDIO) {
    if (parsedCodec === "ec-3" || parsedCodec === "ac-3" || parsedCodec === "alac") {
      return parsedCodec;
    }
    if (parsedCodec === "fLaC" || parsedCodec === "Opus") {
      const preferManagedMediaSource = false;
      return getCodecCompatibleName(parsedCodec, preferManagedMediaSource);
    }
    logger2.warn(`Unhandled audio codec "${parsedCodec}" in mp4 MAP`);
    return parsedCodec || "mp4a";
  }
  logger2.warn(`Unhandled video codec "${parsedCodec}" in mp4 MAP`);
  return parsedCodec || "avc1";
}
var now;
try {
  now = self.performance.now.bind(self.performance);
} catch (err) {
  now = Date.now;
}
var muxConfig = [{
  demux: MP4Demuxer,
  remux: PassThroughRemuxer
}, {
  demux: TSDemuxer,
  remux: MP4Remuxer
}, {
  demux: AACDemuxer,
  remux: MP4Remuxer
}, {
  demux: MP3Demuxer,
  remux: MP4Remuxer
}];
{
  muxConfig.splice(2, 0, {
    demux: AC3Demuxer,
    remux: MP4Remuxer
  });
}
var Transmuxer = class {
  constructor(observer, typeSupported, config, vendor, id, logger2) {
    this.asyncResult = false;
    this.logger = void 0;
    this.observer = void 0;
    this.typeSupported = void 0;
    this.config = void 0;
    this.id = void 0;
    this.demuxer = void 0;
    this.remuxer = void 0;
    this.decrypter = void 0;
    this.probe = void 0;
    this.decryptionPromise = null;
    this.transmuxConfig = void 0;
    this.currentTransmuxState = void 0;
    this.observer = observer;
    this.typeSupported = typeSupported;
    this.config = config;
    this.id = id;
    this.logger = logger2;
  }
  configure(transmuxConfig) {
    this.transmuxConfig = transmuxConfig;
    if (this.decrypter) {
      this.decrypter.reset();
    }
  }
  push(data, decryptdata, chunkMeta, state) {
    const stats = chunkMeta.transmuxing;
    stats.executeStart = now();
    let uintData = new Uint8Array(data);
    const {
      currentTransmuxState,
      transmuxConfig
    } = this;
    if (state) {
      this.currentTransmuxState = state;
    }
    const {
      contiguous,
      discontinuity,
      trackSwitch,
      accurateTimeOffset,
      timeOffset,
      initSegmentChange
    } = state || currentTransmuxState;
    const {
      audioCodec,
      videoCodec,
      defaultInitPts,
      duration,
      initSegmentData
    } = transmuxConfig;
    const keyData = getEncryptionType(uintData, decryptdata);
    if (keyData && isFullSegmentEncryption(keyData.method)) {
      const decrypter = this.getDecrypter();
      const aesMode = getAesModeFromFullSegmentMethod(keyData.method);
      if (decrypter.isSync()) {
        let decryptedData = decrypter.softwareDecrypt(uintData, keyData.key.buffer, keyData.iv.buffer, aesMode);
        const loadingParts = chunkMeta.part > -1;
        if (loadingParts) {
          const _data = decrypter.flush();
          decryptedData = _data ? _data.buffer : _data;
        }
        if (!decryptedData) {
          stats.executeEnd = now();
          return emptyResult(chunkMeta);
        }
        uintData = new Uint8Array(decryptedData);
      } else {
        this.asyncResult = true;
        this.decryptionPromise = decrypter.webCryptoDecrypt(uintData, keyData.key.buffer, keyData.iv.buffer, aesMode).then((decryptedData) => {
          const result2 = this.push(decryptedData, null, chunkMeta);
          this.decryptionPromise = null;
          return result2;
        });
        return this.decryptionPromise;
      }
    }
    const resetMuxers = this.needsProbing(discontinuity, trackSwitch);
    if (resetMuxers) {
      const error = this.configureTransmuxer(uintData);
      if (error) {
        this.logger.warn(`[transmuxer] ${error.message}`);
        this.observer.emit(Events.ERROR, Events.ERROR, {
          type: ErrorTypes.MEDIA_ERROR,
          details: ErrorDetails.FRAG_PARSING_ERROR,
          fatal: false,
          error,
          reason: error.message
        });
        stats.executeEnd = now();
        return emptyResult(chunkMeta);
      }
    }
    if (discontinuity || trackSwitch || initSegmentChange || resetMuxers) {
      this.resetInitSegment(initSegmentData, audioCodec, videoCodec, duration, decryptdata);
    }
    if (discontinuity || initSegmentChange || resetMuxers) {
      this.resetInitialTimestamp(defaultInitPts);
    }
    if (!contiguous) {
      this.resetContiguity();
    }
    const result = this.transmux(uintData, keyData, timeOffset, accurateTimeOffset, chunkMeta);
    this.asyncResult = isPromise(result);
    const currentState = this.currentTransmuxState;
    currentState.contiguous = true;
    currentState.discontinuity = false;
    currentState.trackSwitch = false;
    stats.executeEnd = now();
    return result;
  }
  flush(chunkMeta) {
    const stats = chunkMeta.transmuxing;
    stats.executeStart = now();
    const {
      decrypter,
      currentTransmuxState,
      decryptionPromise
    } = this;
    if (decryptionPromise) {
      this.asyncResult = true;
      return decryptionPromise.then(() => {
        return this.flush(chunkMeta);
      });
    }
    const transmuxResults = [];
    const {
      timeOffset
    } = currentTransmuxState;
    if (decrypter) {
      const decryptedData = decrypter.flush();
      if (decryptedData) {
        transmuxResults.push(this.push(decryptedData.buffer, null, chunkMeta));
      }
    }
    const {
      demuxer,
      remuxer
    } = this;
    if (!demuxer || !remuxer) {
      stats.executeEnd = now();
      const emptyResults = [emptyResult(chunkMeta)];
      if (this.asyncResult) {
        return Promise.resolve(emptyResults);
      }
      return emptyResults;
    }
    const demuxResultOrPromise = demuxer.flush(timeOffset);
    if (isPromise(demuxResultOrPromise)) {
      this.asyncResult = true;
      return demuxResultOrPromise.then((demuxResult) => {
        this.flushRemux(transmuxResults, demuxResult, chunkMeta);
        return transmuxResults;
      });
    }
    this.flushRemux(transmuxResults, demuxResultOrPromise, chunkMeta);
    if (this.asyncResult) {
      return Promise.resolve(transmuxResults);
    }
    return transmuxResults;
  }
  flushRemux(transmuxResults, demuxResult, chunkMeta) {
    const {
      audioTrack,
      videoTrack,
      id3Track,
      textTrack
    } = demuxResult;
    const {
      accurateTimeOffset,
      timeOffset
    } = this.currentTransmuxState;
    this.logger.log(`[transmuxer.ts]: Flushed ${this.id} sn: ${chunkMeta.sn}${chunkMeta.part > -1 ? " part: " + chunkMeta.part : ""} of ${this.id === PlaylistLevelType.MAIN ? "level" : "track"} ${chunkMeta.level}`);
    const remuxResult = this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, true, this.id);
    transmuxResults.push({
      remuxResult,
      chunkMeta
    });
    chunkMeta.transmuxing.executeEnd = now();
  }
  resetInitialTimestamp(defaultInitPts) {
    const {
      demuxer,
      remuxer
    } = this;
    if (!demuxer || !remuxer) {
      return;
    }
    demuxer.resetTimeStamp(defaultInitPts);
    remuxer.resetTimeStamp(defaultInitPts);
  }
  resetContiguity() {
    const {
      demuxer,
      remuxer
    } = this;
    if (!demuxer || !remuxer) {
      return;
    }
    demuxer.resetContiguity();
    remuxer.resetNextTimestamp();
  }
  resetInitSegment(initSegmentData, audioCodec, videoCodec, trackDuration, decryptdata) {
    const {
      demuxer,
      remuxer
    } = this;
    if (!demuxer || !remuxer) {
      return;
    }
    demuxer.resetInitSegment(initSegmentData, audioCodec, videoCodec, trackDuration);
    remuxer.resetInitSegment(initSegmentData, audioCodec, videoCodec, decryptdata);
  }
  destroy() {
    if (this.demuxer) {
      this.demuxer.destroy();
      this.demuxer = void 0;
    }
    if (this.remuxer) {
      this.remuxer.destroy();
      this.remuxer = void 0;
    }
  }
  transmux(data, keyData, timeOffset, accurateTimeOffset, chunkMeta) {
    let result;
    if (keyData && keyData.method === "SAMPLE-AES") {
      result = this.transmuxSampleAes(data, keyData, timeOffset, accurateTimeOffset, chunkMeta);
    } else {
      result = this.transmuxUnencrypted(data, timeOffset, accurateTimeOffset, chunkMeta);
    }
    return result;
  }
  transmuxUnencrypted(data, timeOffset, accurateTimeOffset, chunkMeta) {
    const {
      audioTrack,
      videoTrack,
      id3Track,
      textTrack
    } = this.demuxer.demux(data, timeOffset, false, !this.config.progressive);
    const remuxResult = this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, false, this.id);
    return {
      remuxResult,
      chunkMeta
    };
  }
  transmuxSampleAes(data, decryptData, timeOffset, accurateTimeOffset, chunkMeta) {
    return this.demuxer.demuxSampleAes(data, decryptData, timeOffset).then((demuxResult) => {
      const remuxResult = this.remuxer.remux(demuxResult.audioTrack, demuxResult.videoTrack, demuxResult.id3Track, demuxResult.textTrack, timeOffset, accurateTimeOffset, false, this.id);
      return {
        remuxResult,
        chunkMeta
      };
    });
  }
  configureTransmuxer(data) {
    const {
      config,
      observer,
      typeSupported
    } = this;
    let mux;
    for (let i = 0, len = muxConfig.length; i < len; i++) {
      var _muxConfig$i$demux;
      if ((_muxConfig$i$demux = muxConfig[i].demux) != null && _muxConfig$i$demux.probe(data, this.logger)) {
        mux = muxConfig[i];
        break;
      }
    }
    if (!mux) {
      return new Error("Failed to find demuxer by probing fragment data");
    }
    const demuxer = this.demuxer;
    const remuxer = this.remuxer;
    const Remuxer = mux.remux;
    const Demuxer = mux.demux;
    if (!remuxer || !(remuxer instanceof Remuxer)) {
      this.remuxer = new Remuxer(observer, config, typeSupported, this.logger);
    }
    if (!demuxer || !(demuxer instanceof Demuxer)) {
      this.demuxer = new Demuxer(observer, config, typeSupported, this.logger);
      this.probe = Demuxer.probe;
    }
  }
  needsProbing(discontinuity, trackSwitch) {
    return !this.demuxer || !this.remuxer || discontinuity || trackSwitch;
  }
  getDecrypter() {
    let decrypter = this.decrypter;
    if (!decrypter) {
      decrypter = this.decrypter = new Decrypter(this.config);
    }
    return decrypter;
  }
};
function getEncryptionType(data, decryptData) {
  let encryptionType = null;
  if (data.byteLength > 0 && (decryptData == null ? void 0 : decryptData.key) != null && decryptData.iv !== null && decryptData.method != null) {
    encryptionType = decryptData;
  }
  return encryptionType;
}
var emptyResult = (chunkMeta) => ({
  remuxResult: {},
  chunkMeta
});
function isPromise(p) {
  return "then" in p && p.then instanceof Function;
}
var TransmuxConfig = class {
  constructor(audioCodec, videoCodec, initSegmentData, duration, defaultInitPts) {
    this.audioCodec = void 0;
    this.videoCodec = void 0;
    this.initSegmentData = void 0;
    this.duration = void 0;
    this.defaultInitPts = void 0;
    this.audioCodec = audioCodec;
    this.videoCodec = videoCodec;
    this.initSegmentData = initSegmentData;
    this.duration = duration;
    this.defaultInitPts = defaultInitPts || null;
  }
};
var TransmuxState = class {
  constructor(discontinuity, contiguous, accurateTimeOffset, trackSwitch, timeOffset, initSegmentChange) {
    this.discontinuity = void 0;
    this.contiguous = void 0;
    this.accurateTimeOffset = void 0;
    this.trackSwitch = void 0;
    this.timeOffset = void 0;
    this.initSegmentChange = void 0;
    this.discontinuity = discontinuity;
    this.contiguous = contiguous;
    this.accurateTimeOffset = accurateTimeOffset;
    this.trackSwitch = trackSwitch;
    this.timeOffset = timeOffset;
    this.initSegmentChange = initSegmentChange;
  }
};
var transmuxerInstanceCount = 0;
var TransmuxerInterface = class {
  constructor(_hls, id, onTransmuxComplete, onFlush) {
    this.error = null;
    this.hls = void 0;
    this.id = void 0;
    this.instanceNo = transmuxerInstanceCount++;
    this.observer = void 0;
    this.frag = null;
    this.part = null;
    this.useWorker = void 0;
    this.workerContext = null;
    this.transmuxer = null;
    this.onTransmuxComplete = void 0;
    this.onFlush = void 0;
    this.onWorkerMessage = (event) => {
      const data = event.data;
      const hls = this.hls;
      if (!hls || !(data != null && data.event) || data.instanceNo !== this.instanceNo) {
        return;
      }
      switch (data.event) {
        case "init": {
          var _this$workerContext;
          const objectURL = (_this$workerContext = this.workerContext) == null ? void 0 : _this$workerContext.objectURL;
          if (objectURL) {
            self.URL.revokeObjectURL(objectURL);
          }
          break;
        }
        case "transmuxComplete": {
          this.handleTransmuxComplete(data.data);
          break;
        }
        case "flush": {
          this.onFlush(data.data);
          break;
        }
        case "workerLog": {
          if (hls.logger[data.data.logType]) {
            hls.logger[data.data.logType](data.data.message);
          }
          break;
        }
        default: {
          data.data = data.data || {};
          data.data.frag = this.frag;
          data.data.part = this.part;
          data.data.id = this.id;
          hls.trigger(data.event, data.data);
          break;
        }
      }
    };
    this.onWorkerError = (event) => {
      if (!this.hls) {
        return;
      }
      const error = new Error(`${event.message}  (${event.filename}:${event.lineno})`);
      this.hls.config.enableWorker = false;
      this.hls.logger.warn(`Error in "${this.id}" Web Worker, fallback to inline`);
      this.hls.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.INTERNAL_EXCEPTION,
        fatal: false,
        event: "demuxerWorker",
        error
      });
    };
    const config = _hls.config;
    this.hls = _hls;
    this.id = id;
    this.useWorker = !!config.enableWorker;
    this.onTransmuxComplete = onTransmuxComplete;
    this.onFlush = onFlush;
    const forwardMessage = (ev, data) => {
      data = data || {};
      data.frag = this.frag || void 0;
      if (ev === Events.ERROR) {
        data = data;
        data.parent = this.id;
        data.part = this.part;
        this.error = data.error;
      }
      this.hls.trigger(ev, data);
    };
    this.observer = new EventEmitter();
    this.observer.on(Events.FRAG_DECRYPTED, forwardMessage);
    this.observer.on(Events.ERROR, forwardMessage);
    const m2tsTypeSupported = getM2TSSupportedAudioTypes(config.preferManagedMediaSource);
    if (this.useWorker && typeof Worker !== "undefined") {
      const logger2 = this.hls.logger;
      const canCreateWorker = config.workerPath || hasUMDWorker();
      if (canCreateWorker) {
        try {
          if (config.workerPath) {
            logger2.log(`loading Web Worker ${config.workerPath} for "${id}"`);
            this.workerContext = loadWorker(config.workerPath);
          } else {
            logger2.log(`injecting Web Worker for "${id}"`);
            this.workerContext = injectWorker();
          }
          const {
            worker
          } = this.workerContext;
          worker.addEventListener("message", this.onWorkerMessage);
          worker.addEventListener("error", this.onWorkerError);
          worker.postMessage({
            instanceNo: this.instanceNo,
            cmd: "init",
            typeSupported: m2tsTypeSupported,
            id,
            config: stringify(config)
          });
        } catch (err) {
          logger2.warn(`Error setting up "${id}" Web Worker, fallback to inline`, err);
          this.terminateWorker();
          this.error = null;
          this.transmuxer = new Transmuxer(this.observer, m2tsTypeSupported, config, "", id, _hls.logger);
        }
        return;
      }
    }
    this.transmuxer = new Transmuxer(this.observer, m2tsTypeSupported, config, "", id, _hls.logger);
  }
  reset() {
    this.frag = null;
    this.part = null;
    if (this.workerContext) {
      const instanceNo = this.instanceNo;
      this.instanceNo = transmuxerInstanceCount++;
      const config = this.hls.config;
      const m2tsTypeSupported = getM2TSSupportedAudioTypes(config.preferManagedMediaSource);
      this.workerContext.worker.postMessage({
        instanceNo: this.instanceNo,
        cmd: "reset",
        resetNo: instanceNo,
        typeSupported: m2tsTypeSupported,
        id: this.id,
        config: stringify(config)
      });
    }
  }
  terminateWorker() {
    if (this.workerContext) {
      const {
        worker
      } = this.workerContext;
      this.workerContext = null;
      worker.removeEventListener("message", this.onWorkerMessage);
      worker.removeEventListener("error", this.onWorkerError);
      removeWorkerFromStore(this.hls.config.workerPath);
    }
  }
  destroy() {
    if (this.workerContext) {
      this.terminateWorker();
      this.onWorkerMessage = this.onWorkerError = null;
    } else {
      const transmuxer = this.transmuxer;
      if (transmuxer) {
        transmuxer.destroy();
        this.transmuxer = null;
      }
    }
    const observer = this.observer;
    if (observer) {
      observer.removeAllListeners();
    }
    this.frag = null;
    this.part = null;
    this.observer = null;
    this.hls = null;
  }
  push(data, initSegmentData, audioCodec, videoCodec, frag, part, duration, accurateTimeOffset, chunkMeta, defaultInitPTS) {
    var _frag$initSegment, _lastFrag$initSegment;
    chunkMeta.transmuxing.start = self.performance.now();
    const {
      instanceNo,
      transmuxer
    } = this;
    const timeOffset = part ? part.start : frag.start;
    const decryptdata = frag.decryptdata;
    const lastFrag = this.frag;
    const discontinuity = !(lastFrag && frag.cc === lastFrag.cc);
    const trackSwitch = !(lastFrag && chunkMeta.level === lastFrag.level);
    const snDiff = lastFrag ? chunkMeta.sn - lastFrag.sn : -1;
    const partDiff = this.part ? chunkMeta.part - this.part.index : -1;
    const progressive = snDiff === 0 && chunkMeta.id > 1 && chunkMeta.id === (lastFrag == null ? void 0 : lastFrag.stats.chunkCount);
    const contiguous = !trackSwitch && (snDiff === 1 || snDiff === 0 && (partDiff === 1 || progressive && partDiff <= 0));
    const now2 = self.performance.now();
    if (trackSwitch || snDiff || frag.stats.parsing.start === 0) {
      frag.stats.parsing.start = now2;
    }
    if (part && (partDiff || !contiguous)) {
      part.stats.parsing.start = now2;
    }
    const initSegmentChange = !(lastFrag && ((_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.url) === ((_lastFrag$initSegment = lastFrag.initSegment) == null ? void 0 : _lastFrag$initSegment.url));
    const state = new TransmuxState(discontinuity, contiguous, accurateTimeOffset, trackSwitch, timeOffset, initSegmentChange);
    if (!contiguous || discontinuity || initSegmentChange) {
      this.hls.logger.log(`[transmuxer-interface]: Starting new transmux session for ${frag.type} sn: ${chunkMeta.sn}${chunkMeta.part > -1 ? " part: " + chunkMeta.part : ""} ${this.id === PlaylistLevelType.MAIN ? "level" : "track"}: ${chunkMeta.level} id: ${chunkMeta.id}
        discontinuity: ${discontinuity}
        trackSwitch: ${trackSwitch}
        contiguous: ${contiguous}
        accurateTimeOffset: ${accurateTimeOffset}
        timeOffset: ${timeOffset}
        initSegmentChange: ${initSegmentChange}`);
      const config = new TransmuxConfig(audioCodec, videoCodec, initSegmentData, duration, defaultInitPTS);
      this.configureTransmuxer(config);
    }
    this.frag = frag;
    this.part = part;
    if (this.workerContext) {
      this.workerContext.worker.postMessage({
        instanceNo,
        cmd: "demux",
        data,
        decryptdata,
        chunkMeta,
        state
      }, data instanceof ArrayBuffer ? [data] : []);
    } else if (transmuxer) {
      const transmuxResult = transmuxer.push(data, decryptdata, chunkMeta, state);
      if (isPromise(transmuxResult)) {
        transmuxResult.then((data2) => {
          this.handleTransmuxComplete(data2);
        }).catch((error) => {
          this.transmuxerError(error, chunkMeta, "transmuxer-interface push error");
        });
      } else {
        this.handleTransmuxComplete(transmuxResult);
      }
    }
  }
  flush(chunkMeta) {
    chunkMeta.transmuxing.start = self.performance.now();
    const {
      instanceNo,
      transmuxer
    } = this;
    if (this.workerContext) {
      this.workerContext.worker.postMessage({
        instanceNo,
        cmd: "flush",
        chunkMeta
      });
    } else if (transmuxer) {
      const transmuxResult = transmuxer.flush(chunkMeta);
      if (isPromise(transmuxResult)) {
        transmuxResult.then((data) => {
          this.handleFlushResult(data, chunkMeta);
        }).catch((error) => {
          this.transmuxerError(error, chunkMeta, "transmuxer-interface flush error");
        });
      } else {
        this.handleFlushResult(transmuxResult, chunkMeta);
      }
    }
  }
  transmuxerError(error, chunkMeta, reason) {
    if (!this.hls) {
      return;
    }
    this.error = error;
    this.hls.trigger(Events.ERROR, {
      type: ErrorTypes.MEDIA_ERROR,
      details: ErrorDetails.FRAG_PARSING_ERROR,
      chunkMeta,
      frag: this.frag || void 0,
      part: this.part || void 0,
      fatal: false,
      error,
      err: error,
      reason
    });
  }
  handleFlushResult(results, chunkMeta) {
    results.forEach((result) => {
      this.handleTransmuxComplete(result);
    });
    this.onFlush(chunkMeta);
  }
  configureTransmuxer(config) {
    const {
      instanceNo,
      transmuxer
    } = this;
    if (this.workerContext) {
      this.workerContext.worker.postMessage({
        instanceNo,
        cmd: "configure",
        config
      });
    } else if (transmuxer) {
      transmuxer.configure(config);
    }
  }
  handleTransmuxComplete(result) {
    result.chunkMeta.transmuxing.end = self.performance.now();
    this.onTransmuxComplete(result);
  }
};
var TICK_INTERVAL$3 = 100;
var AudioStreamController = class extends BaseStreamController {
  constructor(hls, fragmentTracker, keyLoader) {
    super(hls, fragmentTracker, keyLoader, "audio-stream-controller", PlaylistLevelType.AUDIO);
    this.mainAnchor = null;
    this.mainFragLoading = null;
    this.audioOnly = false;
    this.bufferedTrack = null;
    this.switchingTrack = null;
    this.trackId = -1;
    this.waitingData = null;
    this.mainDetails = null;
    this.flushing = false;
    this.bufferFlushed = false;
    this.cachedTrackLoadedData = null;
    this.registerListeners();
  }
  onHandlerDestroying() {
    this.unregisterListeners();
    super.onHandlerDestroying();
    this.resetItem();
  }
  resetItem() {
    this.mainDetails = this.mainAnchor = this.mainFragLoading = this.bufferedTrack = this.switchingTrack = this.waitingData = this.cachedTrackLoadedData = null;
  }
  registerListeners() {
    super.registerListeners();
    const {
      hls
    } = this;
    hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.on(Events.AUDIO_TRACKS_UPDATED, this.onAudioTracksUpdated, this);
    hls.on(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.on(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
    hls.on(Events.BUFFER_RESET, this.onBufferReset, this);
    hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
    hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.on(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.on(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
    hls.on(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    if (!hls) {
      return;
    }
    super.unregisterListeners();
    hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.off(Events.AUDIO_TRACKS_UPDATED, this.onAudioTracksUpdated, this);
    hls.off(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.off(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
    hls.off(Events.BUFFER_RESET, this.onBufferReset, this);
    hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
    hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.off(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.off(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
    hls.off(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
  }
  onInitPtsFound(event, {
    frag,
    id,
    initPTS,
    timescale
  }) {
    if (id === PlaylistLevelType.MAIN) {
      const cc = frag.cc;
      const inFlightFrag = this.fragCurrent;
      this.initPTS[cc] = {
        baseTime: initPTS,
        timescale
      };
      this.log(`InitPTS for cc: ${cc} found from main: ${initPTS}/${timescale}`);
      this.mainAnchor = frag;
      if (this.state === State.WAITING_INIT_PTS) {
        const waitingData = this.waitingData;
        if (!waitingData && !this.loadingParts || waitingData && waitingData.frag.cc !== cc) {
          this.syncWithAnchor(frag, waitingData == null ? void 0 : waitingData.frag);
        }
      } else if (!this.hls.hasEnoughToStart && inFlightFrag && inFlightFrag.cc !== cc) {
        inFlightFrag.abortRequests();
        this.syncWithAnchor(frag, inFlightFrag);
      } else if (this.state === State.IDLE) {
        this.tick();
      }
    }
  }
  getLoadPosition() {
    if (!this.startFragRequested && this.nextLoadPosition >= 0) {
      return this.nextLoadPosition;
    }
    return super.getLoadPosition();
  }
  syncWithAnchor(mainAnchor, waitingToAppend) {
    var _this$mainFragLoading;
    const mainFragLoading = ((_this$mainFragLoading = this.mainFragLoading) == null ? void 0 : _this$mainFragLoading.frag) || null;
    if (waitingToAppend) {
      if ((mainFragLoading == null ? void 0 : mainFragLoading.cc) === waitingToAppend.cc) {
        return;
      }
    }
    const targetDiscontinuity = (mainFragLoading || mainAnchor).cc;
    const trackDetails = this.getLevelDetails();
    const pos = this.getLoadPosition();
    const syncFrag = findNearestWithCC(trackDetails, targetDiscontinuity, pos);
    if (syncFrag) {
      this.log(`Syncing with main frag at ${syncFrag.start} cc ${syncFrag.cc}`);
      this.startFragRequested = false;
      this.nextLoadPosition = syncFrag.start;
      this.resetLoadingState();
      if (this.state === State.IDLE) {
        this.doTickIdle();
      }
    }
  }
  startLoad(startPosition, skipSeekToStartPosition) {
    if (!this.levels) {
      this.startPosition = startPosition;
      this.state = State.STOPPED;
      return;
    }
    const lastCurrentTime = this.lastCurrentTime;
    this.stopLoad();
    this.setInterval(TICK_INTERVAL$3);
    if (lastCurrentTime > 0 && startPosition === -1) {
      this.log(`Override startPosition with lastCurrentTime @${lastCurrentTime.toFixed(3)}`);
      startPosition = lastCurrentTime;
      this.state = State.IDLE;
    } else {
      this.state = State.WAITING_TRACK;
    }
    this.nextLoadPosition = this.lastCurrentTime = startPosition + this.timelineOffset;
    this.startPosition = skipSeekToStartPosition ? -1 : startPosition;
    this.tick();
  }
  doTick() {
    switch (this.state) {
      case State.IDLE:
        this.doTickIdle();
        break;
      case State.WAITING_TRACK: {
        const {
          levels,
          trackId
        } = this;
        const currenTrack = levels == null ? void 0 : levels[trackId];
        const details = currenTrack == null ? void 0 : currenTrack.details;
        if (details && !this.waitForLive(currenTrack)) {
          if (this.waitForCdnTuneIn(details)) {
            break;
          }
          this.state = State.WAITING_INIT_PTS;
        }
        break;
      }
      case State.FRAG_LOADING_WAITING_RETRY: {
        var _this$media;
        const now2 = performance.now();
        const retryDate = this.retryDate;
        if (!retryDate || now2 >= retryDate || (_this$media = this.media) != null && _this$media.seeking) {
          const {
            levels,
            trackId
          } = this;
          this.log("RetryDate reached, switch back to IDLE state");
          this.resetStartWhenNotLoaded((levels == null ? void 0 : levels[trackId]) || null);
          this.state = State.IDLE;
        }
        break;
      }
      case State.WAITING_INIT_PTS: {
        const waitingData = this.waitingData;
        if (waitingData) {
          const {
            frag,
            part,
            cache,
            complete
          } = waitingData;
          const mainAnchor = this.mainAnchor;
          if (this.initPTS[frag.cc] !== void 0) {
            this.waitingData = null;
            this.state = State.FRAG_LOADING;
            const payload = cache.flush().buffer;
            const data = {
              frag,
              part,
              payload,
              networkDetails: null
            };
            this._handleFragmentLoadProgress(data);
            if (complete) {
              super._handleFragmentLoadComplete(data);
            }
          } else if (mainAnchor && mainAnchor.cc !== waitingData.frag.cc) {
            this.syncWithAnchor(mainAnchor, waitingData.frag);
          }
        } else {
          this.state = State.IDLE;
        }
      }
    }
    this.onTickEnd();
  }
  resetLoadingState() {
    const waitingData = this.waitingData;
    if (waitingData) {
      this.fragmentTracker.removeFragment(waitingData.frag);
      this.waitingData = null;
    }
    super.resetLoadingState();
  }
  onTickEnd() {
    const {
      media
    } = this;
    if (!(media != null && media.readyState)) {
      return;
    }
    this.lastCurrentTime = media.currentTime;
  }
  doTickIdle() {
    var _this$mainFragLoading2;
    const {
      hls,
      levels,
      media,
      trackId
    } = this;
    const config = hls.config;
    if (!this.buffering || !media && !this.primaryPrefetch && (this.startFragRequested || !config.startFragPrefetch) || !(levels != null && levels[trackId])) {
      return;
    }
    const levelInfo = levels[trackId];
    const trackDetails = levelInfo.details;
    if (!trackDetails || this.waitForLive(levelInfo) || this.waitForCdnTuneIn(trackDetails)) {
      this.state = State.WAITING_TRACK;
      this.startFragRequested = false;
      return;
    }
    const bufferable = this.mediaBuffer ? this.mediaBuffer : this.media;
    if (this.bufferFlushed && bufferable) {
      this.bufferFlushed = false;
      this.afterBufferFlushed(bufferable, ElementaryStreamTypes.AUDIO, PlaylistLevelType.AUDIO);
    }
    const bufferInfo = this.getFwdBufferInfo(bufferable, PlaylistLevelType.AUDIO);
    if (bufferInfo === null) {
      return;
    }
    if (!this.switchingTrack && this._streamEnded(bufferInfo, trackDetails)) {
      hls.trigger(Events.BUFFER_EOS, {
        type: "audio"
      });
      this.state = State.ENDED;
      return;
    }
    const bufferLen = bufferInfo.len;
    const maxBufLen = hls.maxBufferLength;
    const fragments = trackDetails.fragments;
    const start = fragments[0].start;
    const loadPosition = this.getLoadPosition();
    const targetBufferTime = this.flushing ? loadPosition : bufferInfo.end;
    if (this.switchingTrack && media) {
      const pos = loadPosition;
      if (trackDetails.PTSKnown && pos < start) {
        if (bufferInfo.end > start || bufferInfo.nextStart) {
          this.log("Alt audio track ahead of main track, seek to start of alt audio track");
          media.currentTime = start + 0.05;
        }
      }
    }
    if (bufferLen >= maxBufLen && !this.switchingTrack && targetBufferTime < fragments[fragments.length - 1].start) {
      return;
    }
    let frag = this.getNextFragment(targetBufferTime, trackDetails);
    if (frag && this.isLoopLoading(frag, targetBufferTime)) {
      frag = this.getNextFragmentLoopLoading(frag, trackDetails, bufferInfo, PlaylistLevelType.MAIN, maxBufLen);
    }
    if (!frag) {
      this.bufferFlushed = true;
      return;
    }
    let mainFragLoading = ((_this$mainFragLoading2 = this.mainFragLoading) == null ? void 0 : _this$mainFragLoading2.frag) || null;
    if (!this.audioOnly && this.startFragRequested && mainFragLoading && isMediaFragment(frag) && !frag.endList && (!trackDetails.live || !this.loadingParts && targetBufferTime < this.hls.liveSyncPosition)) {
      if (this.fragmentTracker.getState(mainFragLoading) === FragmentState.OK) {
        this.mainFragLoading = mainFragLoading = null;
      }
      if (mainFragLoading && isMediaFragment(mainFragLoading)) {
        if (frag.start > mainFragLoading.end) {
          const mainFragAtPos = this.fragmentTracker.getFragAtPos(targetBufferTime, PlaylistLevelType.MAIN);
          if (mainFragAtPos && mainFragAtPos.end > mainFragLoading.end) {
            mainFragLoading = mainFragAtPos;
            this.mainFragLoading = {
              frag: mainFragAtPos,
              targetBufferTime: null
            };
          }
        }
        const atBufferSyncLimit = frag.start > mainFragLoading.end;
        if (atBufferSyncLimit) {
          return;
        }
      }
    }
    this.loadFragment(frag, levelInfo, targetBufferTime);
  }
  onMediaDetaching(event, data) {
    this.bufferFlushed = this.flushing = false;
    super.onMediaDetaching(event, data);
  }
  onAudioTracksUpdated(event, {
    audioTracks
  }) {
    this.resetTransmuxer();
    this.levels = audioTracks.map((mediaPlaylist) => new Level(mediaPlaylist));
  }
  onAudioTrackSwitching(event, data) {
    const altAudio = !!data.url;
    this.trackId = data.id;
    const {
      fragCurrent
    } = this;
    if (fragCurrent) {
      fragCurrent.abortRequests();
      this.removeUnbufferedFrags(fragCurrent.start);
    }
    this.resetLoadingState();
    if (altAudio) {
      this.switchingTrack = data;
      this.flushAudioIfNeeded(data);
      if (this.state !== State.STOPPED) {
        this.setInterval(TICK_INTERVAL$3);
        this.state = State.IDLE;
        this.tick();
      }
    } else {
      this.resetTransmuxer();
      this.switchingTrack = null;
      this.bufferedTrack = data;
      this.clearInterval();
    }
  }
  onManifestLoading() {
    super.onManifestLoading();
    this.bufferFlushed = this.flushing = this.audioOnly = false;
    this.resetItem();
    this.trackId = -1;
  }
  onLevelLoaded(event, data) {
    this.mainDetails = data.details;
    const cachedTrackLoadedData = this.cachedTrackLoadedData;
    if (cachedTrackLoadedData) {
      this.cachedTrackLoadedData = null;
      this.onAudioTrackLoaded(Events.AUDIO_TRACK_LOADED, cachedTrackLoadedData);
    }
  }
  onAudioTrackLoaded(event, data) {
    var _trackLevel$details;
    const {
      levels
    } = this;
    const {
      details: newDetails,
      id: trackId,
      groupId,
      track
    } = data;
    if (!levels) {
      this.warn(`Audio tracks reset while loading track ${trackId} "${track.name}" of "${groupId}"`);
      return;
    }
    const mainDetails = this.mainDetails;
    if (!mainDetails || newDetails.endCC > mainDetails.endCC || mainDetails.expired) {
      this.cachedTrackLoadedData = data;
      if (this.state !== State.STOPPED) {
        this.state = State.WAITING_TRACK;
      }
      return;
    }
    this.cachedTrackLoadedData = null;
    this.log(`Audio track ${trackId} "${track.name}" of "${groupId}" loaded [${newDetails.startSN},${newDetails.endSN}]${newDetails.lastPartSn ? `[part-${newDetails.lastPartSn}-${newDetails.lastPartIndex}]` : ""},duration:${newDetails.totalduration}`);
    const trackLevel = levels[trackId];
    let sliding = 0;
    if (newDetails.live || (_trackLevel$details = trackLevel.details) != null && _trackLevel$details.live) {
      this.checkLiveUpdate(newDetails);
      if (newDetails.deltaUpdateFailed) {
        return;
      }
      if (trackLevel.details) {
        var _this$levelLastLoaded;
        sliding = this.alignPlaylists(newDetails, trackLevel.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
      }
      if (!newDetails.alignedSliding) {
        alignDiscontinuities(newDetails, mainDetails);
        if (!newDetails.alignedSliding) {
          alignMediaPlaylistByPDT(newDetails, mainDetails);
        }
        sliding = newDetails.fragmentStart;
      }
    }
    trackLevel.details = newDetails;
    this.levelLastLoaded = trackLevel;
    if (!this.startFragRequested) {
      this.setStartPosition(mainDetails, sliding);
    }
    this.hls.trigger(Events.AUDIO_TRACK_UPDATED, {
      details: newDetails,
      id: trackId,
      groupId: data.groupId
    });
    if (this.state === State.WAITING_TRACK && !this.waitForCdnTuneIn(newDetails)) {
      this.state = State.IDLE;
    }
    this.tick();
  }
  _handleFragmentLoadProgress(data) {
    var _frag$initSegment;
    const frag = data.frag;
    const {
      part,
      payload
    } = data;
    const {
      config,
      trackId,
      levels
    } = this;
    if (!levels) {
      this.warn(`Audio tracks were reset while fragment load was in progress. Fragment ${frag.sn} of level ${frag.level} will not be buffered`);
      return;
    }
    const track = levels[trackId];
    if (!track) {
      this.warn("Audio track is undefined on fragment load progress");
      return;
    }
    const details = track.details;
    if (!details) {
      this.warn("Audio track details undefined on fragment load progress");
      this.removeUnbufferedFrags(frag.start);
      return;
    }
    const audioCodec = config.defaultAudioCodec || track.audioCodec || "mp4a.40.2";
    let transmuxer = this.transmuxer;
    if (!transmuxer) {
      transmuxer = this.transmuxer = new TransmuxerInterface(this.hls, PlaylistLevelType.AUDIO, this._handleTransmuxComplete.bind(this), this._handleTransmuxerFlush.bind(this));
    }
    const initPTS = this.initPTS[frag.cc];
    const initSegmentData = (_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.data;
    if (initPTS !== void 0) {
      const accurateTimeOffset = false;
      const partIndex = part ? part.index : -1;
      const partial = partIndex !== -1;
      const chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount, payload.byteLength, partIndex, partial);
      transmuxer.push(payload, initSegmentData, audioCodec, "", frag, part, details.totalduration, accurateTimeOffset, chunkMeta, initPTS);
    } else {
      this.log(`Unknown video PTS for cc ${frag.cc}, waiting for video PTS before demuxing audio frag ${frag.sn} of [${details.startSN} ,${details.endSN}],track ${trackId}`);
      const {
        cache
      } = this.waitingData = this.waitingData || {
        frag,
        part,
        cache: new ChunkCache(),
        complete: false
      };
      cache.push(new Uint8Array(payload));
      if (this.state !== State.STOPPED) {
        this.state = State.WAITING_INIT_PTS;
      }
    }
  }
  _handleFragmentLoadComplete(fragLoadedData) {
    if (this.waitingData) {
      this.waitingData.complete = true;
      return;
    }
    super._handleFragmentLoadComplete(fragLoadedData);
  }
  onBufferReset() {
    this.mediaBuffer = null;
  }
  onBufferCreated(event, data) {
    this.bufferFlushed = this.flushing = false;
    const audioTrack = data.tracks.audio;
    if (audioTrack) {
      this.mediaBuffer = audioTrack.buffer || null;
    }
  }
  onFragLoading(event, data) {
    if (!this.audioOnly && data.frag.type === PlaylistLevelType.MAIN && isMediaFragment(data.frag)) {
      this.mainFragLoading = data;
      if (this.state === State.IDLE) {
        this.tick();
      }
    }
  }
  onFragBuffered(event, data) {
    const {
      frag,
      part
    } = data;
    if (frag.type !== PlaylistLevelType.AUDIO) {
      if (!this.audioOnly && frag.type === PlaylistLevelType.MAIN && !frag.elementaryStreams.video && !frag.elementaryStreams.audiovideo) {
        this.audioOnly = true;
        this.mainFragLoading = null;
      }
      return;
    }
    if (this.fragContextChanged(frag)) {
      this.warn(`Fragment ${frag.sn}${part ? " p: " + part.index : ""} of level ${frag.level} finished buffering, but was aborted. state: ${this.state}, audioSwitch: ${this.switchingTrack ? this.switchingTrack.name : "false"}`);
      return;
    }
    if (isMediaFragment(frag)) {
      this.fragPrevious = frag;
      const track = this.switchingTrack;
      if (track) {
        this.bufferedTrack = track;
        this.switchingTrack = null;
        this.hls.trigger(Events.AUDIO_TRACK_SWITCHED, _objectSpread2({}, track));
      }
    }
    this.fragBufferedComplete(frag, part);
    if (this.media) {
      this.tick();
    }
  }
  onError(event, data) {
    var _data$context;
    if (data.fatal) {
      this.state = State.ERROR;
      return;
    }
    switch (data.details) {
      case ErrorDetails.FRAG_GAP:
      case ErrorDetails.FRAG_PARSING_ERROR:
      case ErrorDetails.FRAG_DECRYPT_ERROR:
      case ErrorDetails.FRAG_LOAD_ERROR:
      case ErrorDetails.FRAG_LOAD_TIMEOUT:
      case ErrorDetails.KEY_LOAD_ERROR:
      case ErrorDetails.KEY_LOAD_TIMEOUT:
        this.onFragmentOrKeyLoadError(PlaylistLevelType.AUDIO, data);
        break;
      case ErrorDetails.AUDIO_TRACK_LOAD_ERROR:
      case ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT:
      case ErrorDetails.LEVEL_PARSING_ERROR:
        if (!data.levelRetry && this.state === State.WAITING_TRACK && ((_data$context = data.context) == null ? void 0 : _data$context.type) === PlaylistContextType.AUDIO_TRACK) {
          this.state = State.IDLE;
        }
        break;
      case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
      case ErrorDetails.BUFFER_APPEND_ERROR:
        if (data.parent !== "audio") {
          return;
        }
        if (!this.reduceLengthAndFlushBuffer(data)) {
          this.resetLoadingState();
        }
        break;
      case ErrorDetails.BUFFER_FULL_ERROR:
        if (data.parent !== "audio") {
          return;
        }
        if (this.reduceLengthAndFlushBuffer(data)) {
          this.bufferedTrack = null;
          super.flushMainBuffer(0, Number.POSITIVE_INFINITY, "audio");
        }
        break;
      case ErrorDetails.INTERNAL_EXCEPTION:
        this.recoverWorkerError(data);
        break;
    }
  }
  onBufferFlushing(event, {
    type
  }) {
    if (type !== ElementaryStreamTypes.VIDEO) {
      this.flushing = true;
    }
  }
  onBufferFlushed(event, {
    type
  }) {
    if (type !== ElementaryStreamTypes.VIDEO) {
      this.flushing = false;
      this.bufferFlushed = true;
      if (this.state === State.ENDED) {
        this.state = State.IDLE;
      }
      const mediaBuffer = this.mediaBuffer || this.media;
      if (mediaBuffer) {
        this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.AUDIO);
        this.tick();
      }
    }
  }
  _handleTransmuxComplete(transmuxResult) {
    var _id3$samples;
    const id = "audio";
    const {
      hls
    } = this;
    const {
      remuxResult,
      chunkMeta
    } = transmuxResult;
    const context = this.getCurrentContext(chunkMeta);
    if (!context) {
      this.resetWhenMissingContext(chunkMeta);
      return;
    }
    const {
      frag,
      part,
      level
    } = context;
    const {
      details
    } = level;
    const {
      audio,
      text,
      id3,
      initSegment
    } = remuxResult;
    if (this.fragContextChanged(frag) || !details) {
      this.fragmentTracker.removeFragment(frag);
      return;
    }
    this.state = State.PARSING;
    if (this.switchingTrack && audio) {
      this.completeAudioSwitch(this.switchingTrack);
    }
    if (initSegment != null && initSegment.tracks) {
      const mapFragment = frag.initSegment || frag;
      this._bufferInitSegment(level, initSegment.tracks, mapFragment, chunkMeta);
      hls.trigger(Events.FRAG_PARSING_INIT_SEGMENT, {
        frag: mapFragment,
        id,
        tracks: initSegment.tracks
      });
    }
    if (audio) {
      const {
        startPTS,
        endPTS,
        startDTS,
        endDTS
      } = audio;
      if (part) {
        part.elementaryStreams[ElementaryStreamTypes.AUDIO] = {
          startPTS,
          endPTS,
          startDTS,
          endDTS
        };
      }
      frag.setElementaryStreamInfo(ElementaryStreamTypes.AUDIO, startPTS, endPTS, startDTS, endDTS);
      this.bufferFragmentData(audio, frag, part, chunkMeta);
    }
    if (id3 != null && (_id3$samples = id3.samples) != null && _id3$samples.length) {
      const emittedID3 = _extends({
        id,
        frag,
        details
      }, id3);
      hls.trigger(Events.FRAG_PARSING_METADATA, emittedID3);
    }
    if (text) {
      const emittedText = _extends({
        id,
        frag,
        details
      }, text);
      hls.trigger(Events.FRAG_PARSING_USERDATA, emittedText);
    }
  }
  _bufferInitSegment(currentLevel, tracks, frag, chunkMeta) {
    if (this.state !== State.PARSING) {
      return;
    }
    if (tracks.video) {
      delete tracks.video;
    }
    if (tracks.audiovideo) {
      delete tracks.audiovideo;
    }
    if (!tracks.audio) {
      return;
    }
    const track = tracks.audio;
    track.id = PlaylistLevelType.AUDIO;
    const variantAudioCodecs = currentLevel.audioCodec;
    this.log(`Init audio buffer, container:${track.container}, codecs[level/parsed]=[${variantAudioCodecs}/${track.codec}]`);
    if (variantAudioCodecs && variantAudioCodecs.split(",").length === 1) {
      track.levelCodec = variantAudioCodecs;
    }
    this.hls.trigger(Events.BUFFER_CODECS, tracks);
    const initSegment = track.initSegment;
    if (initSegment != null && initSegment.byteLength) {
      const segment = {
        type: "audio",
        frag,
        part: null,
        chunkMeta,
        parent: frag.type,
        data: initSegment
      };
      this.hls.trigger(Events.BUFFER_APPENDING, segment);
    }
    this.tickImmediate();
  }
  loadFragment(frag, track, targetBufferTime) {
    const fragState = this.fragmentTracker.getState(frag);
    if (this.switchingTrack || fragState === FragmentState.NOT_LOADED || fragState === FragmentState.PARTIAL) {
      var _track$details;
      if (!isMediaFragment(frag)) {
        this._loadInitSegment(frag, track);
      } else if ((_track$details = track.details) != null && _track$details.live && !this.initPTS[frag.cc]) {
        this.log(`Waiting for video PTS in continuity counter ${frag.cc} of live stream before loading audio fragment ${frag.sn} of level ${this.trackId}`);
        this.state = State.WAITING_INIT_PTS;
        const mainDetails = this.mainDetails;
        if (mainDetails && mainDetails.fragmentStart !== track.details.fragmentStart) {
          alignMediaPlaylistByPDT(track.details, mainDetails);
        }
      } else {
        super.loadFragment(frag, track, targetBufferTime);
      }
    } else {
      this.clearTrackerIfNeeded(frag);
    }
  }
  flushAudioIfNeeded(switchingTrack) {
    if (this.media && this.bufferedTrack) {
      const {
        name,
        lang,
        assocLang,
        characteristics,
        audioCodec,
        channels
      } = this.bufferedTrack;
      if (!matchesOption({
        name,
        lang,
        assocLang,
        characteristics,
        audioCodec,
        channels
      }, switchingTrack, audioMatchPredicate)) {
        if (useAlternateAudio(switchingTrack.url, this.hls)) {
          this.log("Switching audio track : flushing all audio");
          super.flushMainBuffer(0, Number.POSITIVE_INFINITY, "audio");
          this.bufferedTrack = null;
        } else {
          this.bufferedTrack = switchingTrack;
        }
      }
    }
  }
  completeAudioSwitch(switchingTrack) {
    const {
      hls
    } = this;
    this.flushAudioIfNeeded(switchingTrack);
    this.bufferedTrack = switchingTrack;
    this.switchingTrack = null;
    hls.trigger(Events.AUDIO_TRACK_SWITCHED, _objectSpread2({}, switchingTrack));
  }
};
var BasePlaylistController = class extends Logger {
  constructor(hls, logPrefix) {
    super(logPrefix, hls.logger);
    this.hls = void 0;
    this.canLoad = false;
    this.timer = -1;
    this.hls = hls;
  }
  destroy() {
    this.clearTimer();
    this.hls = this.log = this.warn = null;
  }
  clearTimer() {
    if (this.timer !== -1) {
      self.clearTimeout(this.timer);
      this.timer = -1;
    }
  }
  startLoad() {
    this.canLoad = true;
    this.loadPlaylist();
  }
  stopLoad() {
    this.canLoad = false;
    this.clearTimer();
  }
  switchParams(playlistUri, previous, current) {
    const renditionReports = previous == null ? void 0 : previous.renditionReports;
    if (renditionReports) {
      let foundIndex = -1;
      for (let i = 0; i < renditionReports.length; i++) {
        const attr = renditionReports[i];
        let uri;
        try {
          uri = new self.URL(attr.URI, previous.url).href;
        } catch (error) {
          this.warn(`Could not construct new URL for Rendition Report: ${error}`);
          uri = attr.URI || "";
        }
        if (uri === playlistUri) {
          foundIndex = i;
          break;
        } else if (uri === playlistUri.substring(0, uri.length)) {
          foundIndex = i;
        }
      }
      if (foundIndex !== -1) {
        const attr = renditionReports[foundIndex];
        const msn = parseInt(attr["LAST-MSN"]) || (previous == null ? void 0 : previous.lastPartSn);
        let part = parseInt(attr["LAST-PART"]) || (previous == null ? void 0 : previous.lastPartIndex);
        if (this.hls.config.lowLatencyMode) {
          const currentGoal = Math.min(previous.age - previous.partTarget, previous.targetduration);
          if (part >= 0 && currentGoal > previous.partTarget) {
            part += 1;
          }
        }
        const skip = current && getSkipValue(current);
        return new HlsUrlParameters(msn, part >= 0 ? part : void 0, skip);
      }
    }
  }
  loadPlaylist(hlsUrlParameters) {
    this.clearTimer();
  }
  loadingPlaylist(playlist, hlsUrlParameters) {
    this.clearTimer();
  }
  shouldLoadPlaylist(playlist) {
    return this.canLoad && !!playlist && !!playlist.url && (!playlist.details || playlist.details.live);
  }
  getUrlWithDirectives(uri, hlsUrlParameters) {
    if (hlsUrlParameters) {
      try {
        return hlsUrlParameters.addDirectives(uri);
      } catch (error) {
        this.warn(`Could not construct new URL with HLS Delivery Directives: ${error}`);
      }
    }
    return uri;
  }
  playlistLoaded(index, data, previousDetails) {
    const {
      details,
      stats
    } = data;
    const now2 = self.performance.now();
    const elapsed = stats.loading.first ? Math.max(0, now2 - stats.loading.first) : 0;
    details.advancedDateTime = Date.now() - elapsed;
    const timelineOffset = this.hls.config.timelineOffset;
    if (timelineOffset !== details.appliedTimelineOffset) {
      const offset = Math.max(timelineOffset || 0, 0);
      details.appliedTimelineOffset = offset;
      details.fragments.forEach((frag) => {
        frag.start = frag.playlistOffset + offset;
      });
    }
    if (details.live || previousDetails != null && previousDetails.live) {
      const levelOrTrack = "levelInfo" in data ? data.levelInfo : data.track;
      details.reloaded(previousDetails);
      if (previousDetails && details.fragments.length > 0) {
        mergeDetails(previousDetails, details);
        const error = details.playlistParsingError;
        if (error) {
          this.warn(error);
          const hls = this.hls;
          if (!hls.config.ignorePlaylistParsingErrors) {
            var _details$fragments$;
            const {
              networkDetails
            } = data;
            hls.trigger(Events.ERROR, {
              type: ErrorTypes.NETWORK_ERROR,
              details: ErrorDetails.LEVEL_PARSING_ERROR,
              fatal: false,
              url: details.url,
              error,
              reason: error.message,
              level: data.level || void 0,
              parent: (_details$fragments$ = details.fragments[0]) == null ? void 0 : _details$fragments$.type,
              networkDetails,
              stats
            });
            return;
          }
          details.playlistParsingError = null;
        }
      }
      if (details.requestScheduled === -1) {
        details.requestScheduled = stats.loading.start;
      }
      const bufferInfo = this.hls.mainForwardBufferInfo;
      const position = bufferInfo ? bufferInfo.end - bufferInfo.len : 0;
      const distanceToLiveEdgeMs = (details.edge - position) * 1e3;
      const reloadInterval = computeReloadInterval(details, distanceToLiveEdgeMs);
      if (details.requestScheduled + reloadInterval < now2) {
        details.requestScheduled = now2;
      } else {
        details.requestScheduled += reloadInterval;
      }
      this.log(`live playlist ${index} ${details.advanced ? "REFRESHED " + details.lastPartSn + "-" + details.lastPartIndex : details.updated ? "UPDATED" : "MISSED"}`);
      if (!this.canLoad || !details.live) {
        return;
      }
      let deliveryDirectives;
      let msn = void 0;
      let part = void 0;
      if (details.canBlockReload && details.endSN && details.advanced) {
        const lowLatencyMode = this.hls.config.lowLatencyMode;
        const lastPartSn = details.lastPartSn;
        const endSn = details.endSN;
        const lastPartIndex = details.lastPartIndex;
        const hasParts = lastPartIndex !== -1;
        const atLastPartOfSegment = lastPartSn === endSn;
        if (hasParts) {
          if (atLastPartOfSegment) {
            msn = endSn + 1;
            part = lowLatencyMode ? 0 : lastPartIndex;
          } else {
            msn = lastPartSn;
            part = lowLatencyMode ? lastPartIndex + 1 : details.maxPartIndex;
          }
        } else {
          msn = endSn + 1;
        }
        const lastAdvanced = details.age;
        const cdnAge = lastAdvanced + details.ageHeader;
        let currentGoal = Math.min(cdnAge - details.partTarget, details.targetduration * 1.5);
        if (currentGoal > 0) {
          if (cdnAge > details.targetduration * 3) {
            this.log(`Playlist last advanced ${lastAdvanced.toFixed(2)}s ago. Omitting segment and part directives.`);
            msn = void 0;
            part = void 0;
          } else if (previousDetails != null && previousDetails.tuneInGoal && cdnAge - details.partTarget > previousDetails.tuneInGoal) {
            this.warn(`CDN Tune-in goal increased from: ${previousDetails.tuneInGoal} to: ${currentGoal} with playlist age: ${details.age}`);
            currentGoal = 0;
          } else {
            const segments = Math.floor(currentGoal / details.targetduration);
            msn += segments;
            if (part !== void 0) {
              const parts = Math.round(currentGoal % details.targetduration / details.partTarget);
              part += parts;
            }
            this.log(`CDN Tune-in age: ${details.ageHeader}s last advanced ${lastAdvanced.toFixed(2)}s goal: ${currentGoal} skip sn ${segments} to part ${part}`);
          }
          details.tuneInGoal = currentGoal;
        }
        deliveryDirectives = this.getDeliveryDirectives(details, data.deliveryDirectives, msn, part);
        if (lowLatencyMode || !atLastPartOfSegment) {
          details.requestScheduled = now2;
          this.loadingPlaylist(levelOrTrack, deliveryDirectives);
          return;
        }
      } else if (details.canBlockReload || details.canSkipUntil) {
        deliveryDirectives = this.getDeliveryDirectives(details, data.deliveryDirectives, msn, part);
      }
      if (deliveryDirectives && msn !== void 0 && details.canBlockReload) {
        details.requestScheduled = stats.loading.first + Math.max(reloadInterval - elapsed * 2, reloadInterval / 2);
      }
      this.scheduleLoading(levelOrTrack, deliveryDirectives, details);
    } else {
      this.clearTimer();
    }
  }
  scheduleLoading(levelOrTrack, deliveryDirectives, updatedDetails) {
    const details = updatedDetails || levelOrTrack.details;
    if (!details) {
      this.loadingPlaylist(levelOrTrack, deliveryDirectives);
      return;
    }
    const now2 = self.performance.now();
    const requestScheduled = details.requestScheduled;
    if (now2 >= requestScheduled) {
      this.loadingPlaylist(levelOrTrack, deliveryDirectives);
      return;
    }
    const estimatedTimeUntilUpdate = requestScheduled - now2;
    this.log(`reload live playlist ${levelOrTrack.name || levelOrTrack.bitrate + "bps"} in ${Math.round(estimatedTimeUntilUpdate)} ms`);
    this.clearTimer();
    this.timer = self.setTimeout(() => this.loadingPlaylist(levelOrTrack, deliveryDirectives), estimatedTimeUntilUpdate);
  }
  getDeliveryDirectives(details, previousDeliveryDirectives, msn, part) {
    let skip = getSkipValue(details);
    if (previousDeliveryDirectives != null && previousDeliveryDirectives.skip && details.deltaUpdateFailed) {
      msn = previousDeliveryDirectives.msn;
      part = previousDeliveryDirectives.part;
      skip = HlsSkip.No;
    }
    return new HlsUrlParameters(msn, part, skip);
  }
  checkRetry(errorEvent) {
    const errorDetails = errorEvent.details;
    const isTimeout = isTimeoutError(errorEvent);
    const errorAction = errorEvent.errorAction;
    const {
      action,
      retryCount = 0,
      retryConfig
    } = errorAction || {};
    const retry = !!errorAction && !!retryConfig && (action === NetworkErrorAction.RetryRequest || !errorAction.resolved && action === NetworkErrorAction.SendAlternateToPenaltyBox);
    if (retry) {
      var _errorEvent$context;
      if (retryCount >= retryConfig.maxNumRetry) {
        return false;
      }
      if (isTimeout && (_errorEvent$context = errorEvent.context) != null && _errorEvent$context.deliveryDirectives) {
        this.warn(`Retrying playlist loading ${retryCount + 1}/${retryConfig.maxNumRetry} after "${errorDetails}" without delivery-directives`);
        this.loadPlaylist();
      } else {
        const delay = getRetryDelay(retryConfig, retryCount);
        this.clearTimer();
        this.timer = self.setTimeout(() => this.loadPlaylist(), delay);
        this.warn(`Retrying playlist loading ${retryCount + 1}/${retryConfig.maxNumRetry} after "${errorDetails}" in ${delay}ms`);
      }
      errorEvent.levelRetry = true;
      errorAction.resolved = true;
    }
    return retry;
  }
};
function subtitleOptionsIdentical(trackList1, trackList2) {
  if (trackList1.length !== trackList2.length) {
    return false;
  }
  for (let i = 0; i < trackList1.length; i++) {
    if (!mediaAttributesIdentical(trackList1[i].attrs, trackList2[i].attrs)) {
      return false;
    }
  }
  return true;
}
function mediaAttributesIdentical(attrs1, attrs2, customAttributes) {
  const stableRenditionId = attrs1["STABLE-RENDITION-ID"];
  if (stableRenditionId && !customAttributes) {
    return stableRenditionId === attrs2["STABLE-RENDITION-ID"];
  }
  return !(customAttributes || ["LANGUAGE", "NAME", "CHARACTERISTICS", "AUTOSELECT", "DEFAULT", "FORCED", "ASSOC-LANGUAGE"]).some((subtitleAttribute) => attrs1[subtitleAttribute] !== attrs2[subtitleAttribute]);
}
function subtitleTrackMatchesTextTrack(subtitleTrack, textTrack) {
  return textTrack.label.toLowerCase() === subtitleTrack.name.toLowerCase() && (!textTrack.language || textTrack.language.toLowerCase() === (subtitleTrack.lang || "").toLowerCase());
}
var AudioTrackController = class extends BasePlaylistController {
  constructor(hls) {
    super(hls, "audio-track-controller");
    this.tracks = [];
    this.groupIds = null;
    this.tracksInGroup = [];
    this.trackId = -1;
    this.currentTrack = null;
    this.selectDefaultTrack = true;
    this.registerListeners();
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.on(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.off(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  destroy() {
    this.unregisterListeners();
    this.tracks.length = 0;
    this.tracksInGroup.length = 0;
    this.currentTrack = null;
    super.destroy();
  }
  onManifestLoading() {
    this.tracks = [];
    this.tracksInGroup = [];
    this.groupIds = null;
    this.currentTrack = null;
    this.trackId = -1;
    this.selectDefaultTrack = true;
  }
  onManifestParsed(event, data) {
    this.tracks = data.audioTracks || [];
  }
  onAudioTrackLoaded(event, data) {
    const {
      id,
      groupId,
      details
    } = data;
    const trackInActiveGroup = this.tracksInGroup[id];
    if (!trackInActiveGroup || trackInActiveGroup.groupId !== groupId) {
      this.warn(`Audio track with id:${id} and group:${groupId} not found in active group ${trackInActiveGroup == null ? void 0 : trackInActiveGroup.groupId}`);
      return;
    }
    const curDetails = trackInActiveGroup.details;
    trackInActiveGroup.details = data.details;
    this.log(`Audio track ${id} "${trackInActiveGroup.name}" lang:${trackInActiveGroup.lang} group:${groupId} loaded [${details.startSN}-${details.endSN}]`);
    if (id === this.trackId) {
      this.playlistLoaded(id, data, curDetails);
    }
  }
  onLevelLoading(event, data) {
    this.switchLevel(data.level);
  }
  onLevelSwitching(event, data) {
    this.switchLevel(data.level);
  }
  switchLevel(levelIndex) {
    const levelInfo = this.hls.levels[levelIndex];
    if (!levelInfo) {
      return;
    }
    const audioGroups = levelInfo.audioGroups || null;
    const currentGroups = this.groupIds;
    let currentTrack = this.currentTrack;
    if (!audioGroups || (currentGroups == null ? void 0 : currentGroups.length) !== (audioGroups == null ? void 0 : audioGroups.length) || audioGroups != null && audioGroups.some((groupId) => (currentGroups == null ? void 0 : currentGroups.indexOf(groupId)) === -1)) {
      this.groupIds = audioGroups;
      this.trackId = -1;
      this.currentTrack = null;
      const audioTracks = this.tracks.filter((track) => !audioGroups || audioGroups.indexOf(track.groupId) !== -1);
      if (audioTracks.length) {
        if (this.selectDefaultTrack && !audioTracks.some((track) => track.default)) {
          this.selectDefaultTrack = false;
        }
        audioTracks.forEach((track, i) => {
          track.id = i;
        });
      } else if (!currentTrack && !this.tracksInGroup.length) {
        return;
      }
      this.tracksInGroup = audioTracks;
      const audioPreference = this.hls.config.audioPreference;
      if (!currentTrack && audioPreference) {
        const groupIndex = findMatchingOption(audioPreference, audioTracks, audioMatchPredicate);
        if (groupIndex > -1) {
          currentTrack = audioTracks[groupIndex];
        } else {
          const allIndex = findMatchingOption(audioPreference, this.tracks);
          currentTrack = this.tracks[allIndex];
        }
      }
      let trackId = this.findTrackId(currentTrack);
      if (trackId === -1 && currentTrack) {
        trackId = this.findTrackId(null);
      }
      const audioTracksUpdated = {
        audioTracks
      };
      this.log(`Updating audio tracks, ${audioTracks.length} track(s) found in group(s): ${audioGroups == null ? void 0 : audioGroups.join(",")}`);
      this.hls.trigger(Events.AUDIO_TRACKS_UPDATED, audioTracksUpdated);
      const selectedTrackId = this.trackId;
      if (trackId !== -1 && selectedTrackId === -1) {
        this.setAudioTrack(trackId);
      } else if (audioTracks.length && selectedTrackId === -1) {
        var _this$groupIds;
        const error = new Error(`No audio track selected for current audio group-ID(s): ${(_this$groupIds = this.groupIds) == null ? void 0 : _this$groupIds.join(",")} track count: ${audioTracks.length}`);
        this.warn(error.message);
        this.hls.trigger(Events.ERROR, {
          type: ErrorTypes.MEDIA_ERROR,
          details: ErrorDetails.AUDIO_TRACK_LOAD_ERROR,
          fatal: true,
          error
        });
      }
    }
  }
  onError(event, data) {
    if (data.fatal || !data.context) {
      return;
    }
    if (data.context.type === PlaylistContextType.AUDIO_TRACK && data.context.id === this.trackId && (!this.groupIds || this.groupIds.indexOf(data.context.groupId) !== -1)) {
      this.checkRetry(data);
    }
  }
  get allAudioTracks() {
    return this.tracks;
  }
  get audioTracks() {
    return this.tracksInGroup;
  }
  get audioTrack() {
    return this.trackId;
  }
  set audioTrack(newId) {
    this.selectDefaultTrack = false;
    this.setAudioTrack(newId);
  }
  setAudioOption(audioOption) {
    const hls = this.hls;
    hls.config.audioPreference = audioOption;
    if (audioOption) {
      const allAudioTracks = this.allAudioTracks;
      this.selectDefaultTrack = false;
      if (allAudioTracks.length) {
        const currentTrack = this.currentTrack;
        if (currentTrack && matchesOption(audioOption, currentTrack, audioMatchPredicate)) {
          return currentTrack;
        }
        const groupIndex = findMatchingOption(audioOption, this.tracksInGroup, audioMatchPredicate);
        if (groupIndex > -1) {
          const track = this.tracksInGroup[groupIndex];
          this.setAudioTrack(groupIndex);
          return track;
        } else if (currentTrack) {
          let searchIndex = hls.loadLevel;
          if (searchIndex === -1) {
            searchIndex = hls.firstAutoLevel;
          }
          const switchIndex = findClosestLevelWithAudioGroup(audioOption, hls.levels, allAudioTracks, searchIndex, audioMatchPredicate);
          if (switchIndex === -1) {
            return null;
          }
          hls.nextLoadLevel = switchIndex;
        }
        if (audioOption.channels || audioOption.audioCodec) {
          const withoutCodecAndChannelsMatch = findMatchingOption(audioOption, allAudioTracks);
          if (withoutCodecAndChannelsMatch > -1) {
            return allAudioTracks[withoutCodecAndChannelsMatch];
          }
        }
      }
    }
    return null;
  }
  setAudioTrack(newId) {
    const tracks = this.tracksInGroup;
    if (newId < 0 || newId >= tracks.length) {
      this.warn(`Invalid audio track id: ${newId}`);
      return;
    }
    this.selectDefaultTrack = false;
    const lastTrack = this.currentTrack;
    const track = tracks[newId];
    const trackLoaded = track.details && !track.details.live;
    if (newId === this.trackId && track === lastTrack && trackLoaded) {
      return;
    }
    this.log(`Switching to audio-track ${newId} "${track.name}" lang:${track.lang} group:${track.groupId} channels:${track.channels}`);
    this.trackId = newId;
    this.currentTrack = track;
    this.hls.trigger(Events.AUDIO_TRACK_SWITCHING, _objectSpread2({}, track));
    if (trackLoaded) {
      return;
    }
    const hlsUrlParameters = this.switchParams(track.url, lastTrack == null ? void 0 : lastTrack.details, track.details);
    this.loadPlaylist(hlsUrlParameters);
  }
  findTrackId(currentTrack) {
    const audioTracks = this.tracksInGroup;
    for (let i = 0; i < audioTracks.length; i++) {
      const track = audioTracks[i];
      if (this.selectDefaultTrack && !track.default) {
        continue;
      }
      if (!currentTrack || matchesOption(currentTrack, track, audioMatchPredicate)) {
        return i;
      }
    }
    if (currentTrack) {
      const {
        name,
        lang,
        assocLang,
        characteristics,
        audioCodec,
        channels
      } = currentTrack;
      for (let i = 0; i < audioTracks.length; i++) {
        const track = audioTracks[i];
        if (matchesOption({
          name,
          lang,
          assocLang,
          characteristics,
          audioCodec,
          channels
        }, track, audioMatchPredicate)) {
          return i;
        }
      }
      for (let i = 0; i < audioTracks.length; i++) {
        const track = audioTracks[i];
        if (mediaAttributesIdentical(currentTrack.attrs, track.attrs, ["LANGUAGE", "ASSOC-LANGUAGE", "CHARACTERISTICS"])) {
          return i;
        }
      }
      for (let i = 0; i < audioTracks.length; i++) {
        const track = audioTracks[i];
        if (mediaAttributesIdentical(currentTrack.attrs, track.attrs, ["LANGUAGE"])) {
          return i;
        }
      }
    }
    return -1;
  }
  loadPlaylist(hlsUrlParameters) {
    super.loadPlaylist();
    const audioTrack = this.currentTrack;
    if (!this.shouldLoadPlaylist(audioTrack)) {
      return;
    }
    if (useAlternateAudio(audioTrack.url, this.hls)) {
      this.scheduleLoading(audioTrack, hlsUrlParameters);
    }
  }
  loadingPlaylist(audioTrack, hlsUrlParameters) {
    super.loadingPlaylist(audioTrack, hlsUrlParameters);
    const id = audioTrack.id;
    const groupId = audioTrack.groupId;
    const url = this.getUrlWithDirectives(audioTrack.url, hlsUrlParameters);
    const details = audioTrack.details;
    const age = details == null ? void 0 : details.age;
    this.log(`Loading audio-track ${id} "${audioTrack.name}" lang:${audioTrack.lang} group:${groupId}${(hlsUrlParameters == null ? void 0 : hlsUrlParameters.msn) !== void 0 ? " at sn " + hlsUrlParameters.msn + " part " + hlsUrlParameters.part : ""}${age && details.live ? " age " + age.toFixed(1) + (details.type ? " " + details.type || "" : "") : ""} ${url}`);
    this.hls.trigger(Events.AUDIO_TRACK_LOADING, {
      url,
      id,
      groupId,
      deliveryDirectives: hlsUrlParameters || null,
      track: audioTrack
    });
  }
};
var BufferOperationQueue = class {
  constructor(sourceBufferReference) {
    this.tracks = void 0;
    this.queues = {
      video: [],
      audio: [],
      audiovideo: []
    };
    this.tracks = sourceBufferReference;
  }
  destroy() {
    this.tracks = this.queues = null;
  }
  append(operation, type, pending) {
    if (this.queues === null || this.tracks === null) {
      return;
    }
    const queue = this.queues[type];
    queue.push(operation);
    if (queue.length === 1 && !pending) {
      this.executeNext(type);
    }
  }
  appendBlocker(type) {
    return new Promise((resolve) => {
      const operation = {
        label: "async-blocker",
        execute: resolve,
        onStart: () => {
        },
        onComplete: () => {
        },
        onError: () => {
        }
      };
      this.append(operation, type);
    });
  }
  prependBlocker(type) {
    return new Promise((resolve) => {
      if (this.queues) {
        const operation = {
          label: "async-blocker-prepend",
          execute: resolve,
          onStart: () => {
          },
          onComplete: () => {
          },
          onError: () => {
          }
        };
        this.queues[type].unshift(operation);
      }
    });
  }
  removeBlockers() {
    if (this.queues === null) {
      return;
    }
    [this.queues.video, this.queues.audio, this.queues.audiovideo].forEach((queue) => {
      var _queue$;
      const label = (_queue$ = queue[0]) == null ? void 0 : _queue$.label;
      if (label === "async-blocker" || label === "async-blocker-prepend") {
        queue[0].execute();
        queue.splice(0, 1);
      }
    });
  }
  unblockAudio(op) {
    if (this.queues === null) {
      return;
    }
    const queue = this.queues.audio;
    if (queue[0] === op) {
      this.shiftAndExecuteNext("audio");
    }
  }
  executeNext(type) {
    if (this.queues === null || this.tracks === null) {
      return;
    }
    const queue = this.queues[type];
    if (queue.length) {
      const operation = queue[0];
      try {
        operation.execute();
      } catch (error) {
        var _this$tracks$type;
        operation.onError(error);
        if (this.queues === null || this.tracks === null) {
          return;
        }
        const sb = (_this$tracks$type = this.tracks[type]) == null ? void 0 : _this$tracks$type.buffer;
        if (!(sb != null && sb.updating)) {
          this.shiftAndExecuteNext(type);
        }
      }
    }
  }
  shiftAndExecuteNext(type) {
    if (this.queues === null) {
      return;
    }
    this.queues[type].shift();
    this.executeNext(type);
  }
  current(type) {
    var _this$queues;
    return ((_this$queues = this.queues) == null ? void 0 : _this$queues[type][0]) || null;
  }
  toString() {
    const {
      queues,
      tracks
    } = this;
    if (queues === null || tracks === null) {
      return `<destroyed>`;
    }
    return `
${this.list("video")}
${this.list("audio")}
${this.list("audiovideo")}}`;
  }
  list(type) {
    var _this$queues2, _this$tracks;
    return (_this$queues2 = this.queues) != null && _this$queues2[type] || (_this$tracks = this.tracks) != null && _this$tracks[type] ? `${type}: (${this.listSbInfo(type)}) ${this.listOps(type)}` : "";
  }
  listSbInfo(type) {
    var _this$tracks2;
    const track = (_this$tracks2 = this.tracks) == null ? void 0 : _this$tracks2[type];
    const sb = track == null ? void 0 : track.buffer;
    if (!sb) {
      return "none";
    }
    return `SourceBuffer${sb.updating ? " updating" : ""}${track.ended ? " ended" : ""}${track.ending ? " ending" : ""}`;
  }
  listOps(type) {
    var _this$queues3;
    return ((_this$queues3 = this.queues) == null ? void 0 : _this$queues3[type].map((op) => op.label).join(", ")) || "";
  }
};
var VIDEO_CODEC_PROFILE_REPLACE = /(avc[1234]|hvc1|hev1|dvh[1e]|vp09|av01)(?:\.[^.,]+)+/;
var TRACK_REMOVED_ERROR_NAME = "HlsJsTrackRemovedError";
var HlsJsTrackRemovedError = class extends Error {
  constructor(message) {
    super(message);
    this.name = TRACK_REMOVED_ERROR_NAME;
  }
};
var BufferController = class extends Logger {
  constructor(hls, fragmentTracker) {
    super("buffer-controller", hls.logger);
    this.hls = void 0;
    this.fragmentTracker = void 0;
    this.details = null;
    this._objectUrl = null;
    this.operationQueue = null;
    this.bufferCodecEventsTotal = 0;
    this.media = null;
    this.mediaSource = null;
    this.lastMpegAudioChunk = null;
    this.blockedAudioAppend = null;
    this.lastVideoAppendEnd = 0;
    this.appendSource = void 0;
    this.transferData = void 0;
    this.overrides = void 0;
    this.appendErrors = {
      audio: 0,
      video: 0,
      audiovideo: 0
    };
    this.tracks = {};
    this.sourceBuffers = [[null, null], [null, null]];
    this._onEndStreaming = (event) => {
      var _this$mediaSource;
      if (!this.hls) {
        return;
      }
      if (((_this$mediaSource = this.mediaSource) == null ? void 0 : _this$mediaSource.readyState) !== "open") {
        return;
      }
      this.hls.pauseBuffering();
    };
    this._onStartStreaming = (event) => {
      if (!this.hls) {
        return;
      }
      this.hls.resumeBuffering();
    };
    this._onMediaSourceOpen = (e) => {
      const {
        media,
        mediaSource
      } = this;
      if (e) {
        this.log("Media source opened");
      }
      if (!media || !mediaSource) {
        return;
      }
      mediaSource.removeEventListener("sourceopen", this._onMediaSourceOpen);
      media.removeEventListener("emptied", this._onMediaEmptied);
      this.updateDuration();
      this.hls.trigger(Events.MEDIA_ATTACHED, {
        media,
        mediaSource
      });
      if (this.mediaSource !== null) {
        this.checkPendingTracks();
      }
    };
    this._onMediaSourceClose = () => {
      this.log("Media source closed");
    };
    this._onMediaSourceEnded = () => {
      this.log("Media source ended");
    };
    this._onMediaEmptied = () => {
      const {
        mediaSrc,
        _objectUrl
      } = this;
      if (mediaSrc !== _objectUrl) {
        this.error(`Media element src was set while attaching MediaSource (${_objectUrl} > ${mediaSrc})`);
      }
    };
    this.hls = hls;
    this.fragmentTracker = fragmentTracker;
    this.appendSource = isManagedMediaSource(getMediaSource(hls.config.preferManagedMediaSource));
    this.initTracks();
    this.registerListeners();
  }
  hasSourceTypes() {
    return Object.keys(this.tracks).length > 0;
  }
  destroy() {
    this.unregisterListeners();
    this.details = null;
    this.lastMpegAudioChunk = this.blockedAudioAppend = null;
    this.transferData = this.overrides = void 0;
    if (this.operationQueue) {
      this.operationQueue.destroy();
      this.operationQueue = null;
    }
    this.hls = this.fragmentTracker = null;
    this._onMediaSourceOpen = this._onMediaSourceClose = null;
    this._onMediaSourceEnded = null;
    this._onStartStreaming = this._onEndStreaming = null;
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.BUFFER_RESET, this.onBufferReset, this);
    hls.on(Events.BUFFER_APPENDING, this.onBufferAppending, this);
    hls.on(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    hls.on(Events.BUFFER_EOS, this.onBufferEos, this);
    hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.on(Events.FRAG_PARSED, this.onFragParsed, this);
    hls.on(Events.FRAG_CHANGED, this.onFragChanged, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.BUFFER_RESET, this.onBufferReset, this);
    hls.off(Events.BUFFER_APPENDING, this.onBufferAppending, this);
    hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    hls.off(Events.BUFFER_EOS, this.onBufferEos, this);
    hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.off(Events.FRAG_PARSED, this.onFragParsed, this);
    hls.off(Events.FRAG_CHANGED, this.onFragChanged, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  transferMedia() {
    const {
      media,
      mediaSource
    } = this;
    if (!media) {
      return null;
    }
    const tracks = {};
    if (this.operationQueue) {
      const updating = this.isUpdating();
      if (!updating) {
        this.operationQueue.removeBlockers();
      }
      const queued = this.isQueued();
      if (updating || queued) {
        this.warn(`Transfering MediaSource with${queued ? " operations in queue" : ""}${updating ? " updating SourceBuffer(s)" : ""} ${this.operationQueue}`);
      }
      this.operationQueue.destroy();
    }
    const transferData = this.transferData;
    if (!this.sourceBufferCount && transferData && transferData.mediaSource === mediaSource) {
      _extends(tracks, transferData.tracks);
    } else {
      this.sourceBuffers.forEach((tuple) => {
        const [type] = tuple;
        if (type) {
          tracks[type] = _extends({}, this.tracks[type]);
          this.removeBuffer(type);
        }
        tuple[0] = tuple[1] = null;
      });
    }
    return {
      media,
      mediaSource,
      tracks
    };
  }
  initTracks() {
    const tracks = {};
    this.sourceBuffers = [[null, null], [null, null]];
    this.tracks = tracks;
    this.resetQueue();
    this.resetAppendErrors();
    this.lastMpegAudioChunk = this.blockedAudioAppend = null;
    this.lastVideoAppendEnd = 0;
  }
  onManifestLoading() {
    this.bufferCodecEventsTotal = 0;
    this.details = null;
  }
  onManifestParsed(event, data) {
    var _this$transferData;
    let codecEvents = 2;
    if (data.audio && !data.video || !data.altAudio) {
      codecEvents = 1;
    }
    this.bufferCodecEventsTotal = codecEvents;
    this.log(`${codecEvents} bufferCodec event(s) expected.`);
    if ((_this$transferData = this.transferData) != null && _this$transferData.mediaSource && this.sourceBufferCount && codecEvents) {
      this.bufferCreated();
    }
  }
  onMediaAttaching(event, data) {
    const media = this.media = data.media;
    const MediaSource = getMediaSource(this.appendSource);
    this.transferData = this.overrides = void 0;
    if (media && MediaSource) {
      const transferringMedia = !!data.mediaSource;
      if (transferringMedia || data.overrides) {
        this.transferData = data;
        this.overrides = data.overrides;
      }
      const ms = this.mediaSource = data.mediaSource || new MediaSource();
      this.assignMediaSource(ms);
      if (transferringMedia) {
        this._objectUrl = media.src;
        this.attachTransferred();
      } else {
        const objectUrl = this._objectUrl = self.URL.createObjectURL(ms);
        if (this.appendSource) {
          try {
            media.removeAttribute("src");
            const MMS = self.ManagedMediaSource;
            media.disableRemotePlayback = media.disableRemotePlayback || MMS && ms instanceof MMS;
            removeSourceChildren(media);
            addSource(media, objectUrl);
            media.load();
          } catch (error) {
            media.src = objectUrl;
          }
        } else {
          media.src = objectUrl;
        }
      }
      media.addEventListener("emptied", this._onMediaEmptied);
    }
  }
  assignMediaSource(ms) {
    var _this$transferData2, _ms$constructor;
    this.log(`${((_this$transferData2 = this.transferData) == null ? void 0 : _this$transferData2.mediaSource) === ms ? "transferred" : "created"} media source: ${(_ms$constructor = ms.constructor) == null ? void 0 : _ms$constructor.name}`);
    ms.addEventListener("sourceopen", this._onMediaSourceOpen);
    ms.addEventListener("sourceended", this._onMediaSourceEnded);
    ms.addEventListener("sourceclose", this._onMediaSourceClose);
    if (this.appendSource) {
      ms.addEventListener("startstreaming", this._onStartStreaming);
      ms.addEventListener("endstreaming", this._onEndStreaming);
    }
  }
  attachTransferred() {
    const media = this.media;
    const data = this.transferData;
    if (!data || !media) {
      return;
    }
    const requiredTracks = this.tracks;
    const transferredTracks = data.tracks;
    const trackNames = transferredTracks ? Object.keys(transferredTracks) : null;
    const trackCount = trackNames ? trackNames.length : 0;
    const mediaSourceOpenCallback = () => {
      if (this.media && this.mediaSourceOpenOrEnded) {
        this._onMediaSourceOpen();
      }
    };
    if (transferredTracks && trackNames && trackCount) {
      if (!this.tracksReady) {
        this.hls.config.startFragPrefetch = true;
        this.log(`attachTransferred: waiting for SourceBuffer track info`);
        return;
      }
      this.log(`attachTransferred: (bufferCodecEventsTotal ${this.bufferCodecEventsTotal})
required tracks: ${stringify(requiredTracks, (key, value) => key === "initSegment" ? void 0 : value)};
transfer tracks: ${stringify(transferredTracks, (key, value) => key === "initSegment" ? void 0 : value)}}`);
      if (!isCompatibleTrackChange(transferredTracks, requiredTracks)) {
        data.mediaSource = null;
        data.tracks = void 0;
        const currentTime = media.currentTime;
        const details = this.details;
        const startTime = Math.max(currentTime, (details == null ? void 0 : details.fragments[0].start) || 0);
        if (startTime - currentTime > 1) {
          this.log(`attachTransferred: waiting for playback to reach new tracks start time ${currentTime} -> ${startTime}`);
          return;
        }
        this.warn(`attachTransferred: resetting MediaSource for incompatible tracks ("${Object.keys(transferredTracks)}"->"${Object.keys(requiredTracks)}") start time: ${startTime} currentTime: ${currentTime}`);
        this.onMediaDetaching(Events.MEDIA_DETACHING, {});
        this.onMediaAttaching(Events.MEDIA_ATTACHING, data);
        media.currentTime = startTime;
        return;
      }
      this.transferData = void 0;
      trackNames.forEach((trackName) => {
        const type = trackName;
        const track = transferredTracks[type];
        if (track) {
          const sb = track.buffer;
          if (sb) {
            const fragmentTracker = this.fragmentTracker;
            const playlistType = track.id;
            if (fragmentTracker.hasFragments(playlistType) || fragmentTracker.hasParts(playlistType)) {
              const bufferedTimeRanges = BufferHelper.getBuffered(sb);
              fragmentTracker.detectEvictedFragments(type, bufferedTimeRanges, playlistType, null, true);
            }
            const sbIndex = sourceBufferNameToIndex(type);
            const sbTuple = [type, sb];
            this.sourceBuffers[sbIndex] = sbTuple;
            if (sb.updating && this.operationQueue) {
              this.operationQueue.prependBlocker(type);
            }
            this.trackSourceBuffer(type, track);
          }
        }
      });
      mediaSourceOpenCallback();
      this.bufferCreated();
    } else {
      this.log(`attachTransferred: MediaSource w/o SourceBuffers`);
      mediaSourceOpenCallback();
    }
  }
  get mediaSourceOpenOrEnded() {
    var _this$mediaSource2;
    const readyState = (_this$mediaSource2 = this.mediaSource) == null ? void 0 : _this$mediaSource2.readyState;
    return readyState === "open" || readyState === "ended";
  }
  onMediaDetaching(event, data) {
    const transferringMedia = !!data.transferMedia;
    this.transferData = this.overrides = void 0;
    const {
      media,
      mediaSource,
      _objectUrl
    } = this;
    if (mediaSource) {
      this.log(`media source ${transferringMedia ? "transferring" : "detaching"}`);
      if (transferringMedia) {
        this.sourceBuffers.forEach(([type]) => {
          if (type) {
            this.removeBuffer(type);
          }
        });
        this.resetQueue();
      } else {
        if (this.mediaSourceOpenOrEnded) {
          const open = mediaSource.readyState === "open";
          try {
            const sourceBuffers = mediaSource.sourceBuffers;
            for (let i = sourceBuffers.length; i--; ) {
              if (open) {
                sourceBuffers[i].abort();
              }
              mediaSource.removeSourceBuffer(sourceBuffers[i]);
            }
            if (open) {
              mediaSource.endOfStream();
            }
          } catch (err) {
            this.warn(`onMediaDetaching: ${err.message} while calling endOfStream`);
          }
        }
        if (this.sourceBufferCount) {
          this.onBufferReset();
        }
      }
      mediaSource.removeEventListener("sourceopen", this._onMediaSourceOpen);
      mediaSource.removeEventListener("sourceended", this._onMediaSourceEnded);
      mediaSource.removeEventListener("sourceclose", this._onMediaSourceClose);
      if (this.appendSource) {
        mediaSource.removeEventListener("startstreaming", this._onStartStreaming);
        mediaSource.removeEventListener("endstreaming", this._onEndStreaming);
      }
      this.mediaSource = null;
      this._objectUrl = null;
    }
    if (media) {
      media.removeEventListener("emptied", this._onMediaEmptied);
      if (!transferringMedia) {
        if (_objectUrl) {
          self.URL.revokeObjectURL(_objectUrl);
        }
        if (this.mediaSrc === _objectUrl) {
          media.removeAttribute("src");
          if (this.appendSource) {
            removeSourceChildren(media);
          }
          media.load();
        } else {
          this.warn("media|source.src was changed by a third party - skip cleanup");
        }
      }
      this.media = null;
    }
    this.hls.trigger(Events.MEDIA_DETACHED, data);
  }
  onBufferReset() {
    this.sourceBuffers.forEach(([type]) => {
      if (type) {
        this.resetBuffer(type);
      }
    });
    this.initTracks();
  }
  resetBuffer(type) {
    var _this$tracks$type;
    const sb = (_this$tracks$type = this.tracks[type]) == null ? void 0 : _this$tracks$type.buffer;
    this.removeBuffer(type);
    if (sb) {
      try {
        var _this$mediaSource3;
        if ((_this$mediaSource3 = this.mediaSource) != null && _this$mediaSource3.sourceBuffers.length) {
          this.mediaSource.removeSourceBuffer(sb);
        }
      } catch (err) {
        this.warn(`onBufferReset ${type}`, err);
      }
    }
    delete this.tracks[type];
  }
  removeBuffer(type) {
    this.removeBufferListeners(type);
    this.sourceBuffers[sourceBufferNameToIndex(type)] = [null, null];
    const track = this.tracks[type];
    if (track) {
      track.buffer = void 0;
    }
  }
  resetQueue() {
    if (this.operationQueue) {
      this.operationQueue.destroy();
    }
    this.operationQueue = new BufferOperationQueue(this.tracks);
  }
  onBufferCodecs(event, data) {
    const tracks = this.tracks;
    const trackNames = Object.keys(data);
    this.log(`BUFFER_CODECS: "${trackNames}" (current SB count ${this.sourceBufferCount})`);
    const unmuxedToMuxed = "audiovideo" in data && (tracks.audio || tracks.video) || tracks.audiovideo && ("audio" in data || "video" in data);
    const muxedToUnmuxed = !unmuxedToMuxed && this.sourceBufferCount && this.media && trackNames.some((sbName) => !tracks[sbName]);
    if (unmuxedToMuxed || muxedToUnmuxed) {
      this.warn(`Unsupported transition between "${Object.keys(tracks)}" and "${trackNames}" SourceBuffers`);
      return;
    }
    trackNames.forEach((trackName) => {
      var _this$transferData3, _this$transferData3$t, _trackCodec;
      const parsedTrack = data[trackName];
      const {
        id,
        codec,
        levelCodec,
        container,
        metadata,
        supplemental
      } = parsedTrack;
      let track = tracks[trackName];
      const transferredTrack = (_this$transferData3 = this.transferData) == null ? void 0 : (_this$transferData3$t = _this$transferData3.tracks) == null ? void 0 : _this$transferData3$t[trackName];
      const sbTrack = transferredTrack != null && transferredTrack.buffer ? transferredTrack : track;
      const sbCodec = (sbTrack == null ? void 0 : sbTrack.pendingCodec) || (sbTrack == null ? void 0 : sbTrack.codec);
      const trackLevelCodec = sbTrack == null ? void 0 : sbTrack.levelCodec;
      if (!track) {
        track = tracks[trackName] = {
          buffer: void 0,
          listeners: [],
          codec,
          supplemental,
          container,
          levelCodec,
          metadata,
          id
        };
      }
      const currentCodecFull = pickMostCompleteCodecName(sbCodec, trackLevelCodec);
      const currentCodec = currentCodecFull == null ? void 0 : currentCodecFull.replace(VIDEO_CODEC_PROFILE_REPLACE, "$1");
      let trackCodec = pickMostCompleteCodecName(codec, levelCodec);
      const nextCodec = (_trackCodec = trackCodec) == null ? void 0 : _trackCodec.replace(VIDEO_CODEC_PROFILE_REPLACE, "$1");
      if (trackCodec && currentCodecFull && currentCodec !== nextCodec) {
        if (trackName.slice(0, 5) === "audio") {
          trackCodec = getCodecCompatibleName(trackCodec, this.appendSource);
        }
        this.log(`switching codec ${sbCodec} to ${trackCodec}`);
        if (trackCodec !== (track.pendingCodec || track.codec)) {
          track.pendingCodec = trackCodec;
        }
        track.container = container;
        this.appendChangeType(trackName, container, trackCodec);
      }
    });
    if (this.tracksReady || this.sourceBufferCount) {
      data.tracks = this.sourceBufferTracks;
    }
    if (this.sourceBufferCount) {
      return;
    }
    if (this.mediaSourceOpenOrEnded) {
      this.checkPendingTracks();
    }
  }
  get sourceBufferTracks() {
    return Object.keys(this.tracks).reduce((baseTracks, type) => {
      const track = this.tracks[type];
      baseTracks[type] = {
        id: track.id,
        container: track.container,
        codec: track.codec,
        levelCodec: track.levelCodec
      };
      return baseTracks;
    }, {});
  }
  appendChangeType(type, container, codec) {
    const mimeType = `${container};codecs=${codec}`;
    const operation = {
      label: `change-type=${mimeType}`,
      execute: () => {
        const track = this.tracks[type];
        if (track) {
          const sb = track.buffer;
          if (sb != null && sb.changeType) {
            this.log(`changing ${type} sourceBuffer type to ${mimeType}`);
            sb.changeType(mimeType);
            track.codec = codec;
            track.container = container;
          }
        }
        this.shiftAndExecuteNext(type);
      },
      onStart: () => {
      },
      onComplete: () => {
      },
      onError: (error) => {
        this.warn(`Failed to change ${type} SourceBuffer type`, error);
      }
    };
    this.append(operation, type, this.isPending(this.tracks[type]));
  }
  blockAudio(partOrFrag) {
    var _this$fragmentTracker;
    const pStart = partOrFrag.start;
    const pTime = pStart + partOrFrag.duration * 0.05;
    const atGap = ((_this$fragmentTracker = this.fragmentTracker.getAppendedFrag(pStart, PlaylistLevelType.MAIN)) == null ? void 0 : _this$fragmentTracker.gap) === true;
    if (atGap) {
      return;
    }
    const op = {
      label: "block-audio",
      execute: () => {
        var _this$fragmentTracker2;
        const videoTrack = this.tracks.video;
        if (this.lastVideoAppendEnd > pTime || videoTrack != null && videoTrack.buffer && BufferHelper.isBuffered(videoTrack.buffer, pTime) || ((_this$fragmentTracker2 = this.fragmentTracker.getAppendedFrag(pTime, PlaylistLevelType.MAIN)) == null ? void 0 : _this$fragmentTracker2.gap) === true) {
          this.blockedAudioAppend = null;
          this.shiftAndExecuteNext("audio");
        }
      },
      onStart: () => {
      },
      onComplete: () => {
      },
      onError: (error) => {
        this.warn("Error executing block-audio operation", error);
      }
    };
    this.blockedAudioAppend = {
      op,
      frag: partOrFrag
    };
    this.append(op, "audio", true);
  }
  unblockAudio() {
    const {
      blockedAudioAppend,
      operationQueue
    } = this;
    if (blockedAudioAppend && operationQueue) {
      this.blockedAudioAppend = null;
      operationQueue.unblockAudio(blockedAudioAppend.op);
    }
  }
  onBufferAppending(event, eventData) {
    const {
      tracks
    } = this;
    const {
      data,
      type,
      parent,
      frag,
      part,
      chunkMeta,
      offset
    } = eventData;
    const chunkStats = chunkMeta.buffering[type];
    const {
      sn,
      cc
    } = frag;
    const bufferAppendingStart = self.performance.now();
    chunkStats.start = bufferAppendingStart;
    const fragBuffering = frag.stats.buffering;
    const partBuffering = part ? part.stats.buffering : null;
    if (fragBuffering.start === 0) {
      fragBuffering.start = bufferAppendingStart;
    }
    if (partBuffering && partBuffering.start === 0) {
      partBuffering.start = bufferAppendingStart;
    }
    const audioTrack = tracks.audio;
    let checkTimestampOffset = false;
    if (type === "audio" && (audioTrack == null ? void 0 : audioTrack.container) === "audio/mpeg") {
      checkTimestampOffset = !this.lastMpegAudioChunk || chunkMeta.id === 1 || this.lastMpegAudioChunk.sn !== chunkMeta.sn;
      this.lastMpegAudioChunk = chunkMeta;
    }
    const videoTrack = tracks.video;
    const videoSb = videoTrack == null ? void 0 : videoTrack.buffer;
    if (videoSb && sn !== "initSegment") {
      const partOrFrag = part || frag;
      const blockedAudioAppend = this.blockedAudioAppend;
      if (type === "audio" && parent !== "main" && !this.blockedAudioAppend) {
        const pStart = partOrFrag.start;
        const pTime = pStart + partOrFrag.duration * 0.05;
        const vbuffered = videoSb.buffered;
        const vappending = this.currentOp("video");
        if (!vbuffered.length && !vappending) {
          this.blockAudio(partOrFrag);
        } else if (!vappending && !BufferHelper.isBuffered(videoSb, pTime) && this.lastVideoAppendEnd < pTime) {
          this.blockAudio(partOrFrag);
        }
      } else if (type === "video") {
        const videoAppendEnd = partOrFrag.end;
        if (blockedAudioAppend) {
          const audioStart = blockedAudioAppend.frag.start;
          if (videoAppendEnd > audioStart || videoAppendEnd < this.lastVideoAppendEnd || BufferHelper.isBuffered(videoSb, audioStart)) {
            this.unblockAudio();
          }
        }
        this.lastVideoAppendEnd = videoAppendEnd;
      }
    }
    const fragStart = (part || frag).start;
    const operation = {
      label: `append-${type}`,
      execute: () => {
        var _this$tracks$type2;
        chunkStats.executeStart = self.performance.now();
        const sb = (_this$tracks$type2 = this.tracks[type]) == null ? void 0 : _this$tracks$type2.buffer;
        if (sb) {
          if (checkTimestampOffset) {
            this.updateTimestampOffset(sb, fragStart, 0.1, type, sn, cc);
          } else if (offset !== void 0 && isFiniteNumber(offset)) {
            this.updateTimestampOffset(sb, offset, 1e-6, type, sn, cc);
          }
        }
        this.appendExecutor(data, type);
      },
      onStart: () => {
      },
      onComplete: () => {
        const end = self.performance.now();
        chunkStats.executeEnd = chunkStats.end = end;
        if (fragBuffering.first === 0) {
          fragBuffering.first = end;
        }
        if (partBuffering && partBuffering.first === 0) {
          partBuffering.first = end;
        }
        const timeRanges = {};
        this.sourceBuffers.forEach(([type2, sb]) => {
          if (type2) {
            timeRanges[type2] = BufferHelper.getBuffered(sb);
          }
        });
        this.appendErrors[type] = 0;
        if (type === "audio" || type === "video") {
          this.appendErrors.audiovideo = 0;
        } else {
          this.appendErrors.audio = 0;
          this.appendErrors.video = 0;
        }
        this.hls.trigger(Events.BUFFER_APPENDED, {
          type,
          frag,
          part,
          chunkMeta,
          parent: frag.type,
          timeRanges
        });
      },
      onError: (error) => {
        var _this$media;
        const event2 = {
          type: ErrorTypes.MEDIA_ERROR,
          parent: frag.type,
          details: ErrorDetails.BUFFER_APPEND_ERROR,
          sourceBufferName: type,
          frag,
          part,
          chunkMeta,
          error,
          err: error,
          fatal: false
        };
        const mediaError = (_this$media = this.media) == null ? void 0 : _this$media.error;
        if (error.code === DOMException.QUOTA_EXCEEDED_ERR || error.name == "QuotaExceededError" || `quota` in error) {
          event2.details = ErrorDetails.BUFFER_FULL_ERROR;
        } else if (error.code === DOMException.INVALID_STATE_ERR && this.mediaSourceOpenOrEnded && !mediaError) {
          event2.errorAction = createDoNothingErrorAction(true);
        } else if (error.name === TRACK_REMOVED_ERROR_NAME && this.sourceBufferCount === 0) {
          event2.errorAction = createDoNothingErrorAction(true);
        } else {
          const appendErrorCount = ++this.appendErrors[type];
          this.warn(`Failed ${appendErrorCount}/${this.hls.config.appendErrorMaxRetry} times to append segment in "${type}" sourceBuffer (${mediaError ? mediaError : "no media error"})`);
          if (appendErrorCount >= this.hls.config.appendErrorMaxRetry || !!mediaError) {
            event2.fatal = true;
          }
        }
        this.hls.trigger(Events.ERROR, event2);
      }
    };
    this.append(operation, type, this.isPending(this.tracks[type]));
  }
  getFlushOp(type, start, end) {
    this.log(`queuing "${type}" remove ${start}-${end}`);
    return {
      label: "remove",
      execute: () => {
        this.removeExecutor(type, start, end);
      },
      onStart: () => {
      },
      onComplete: () => {
        this.hls.trigger(Events.BUFFER_FLUSHED, {
          type
        });
      },
      onError: (error) => {
        this.warn(`Failed to remove ${start}-${end} from "${type}" SourceBuffer`, error);
      }
    };
  }
  onBufferFlushing(event, data) {
    const {
      type,
      startOffset,
      endOffset
    } = data;
    if (type) {
      this.append(this.getFlushOp(type, startOffset, endOffset), type);
    } else {
      this.sourceBuffers.forEach(([type2]) => {
        if (type2) {
          this.append(this.getFlushOp(type2, startOffset, endOffset), type2);
        }
      });
    }
  }
  onFragParsed(event, data) {
    const {
      frag,
      part
    } = data;
    const buffersAppendedTo = [];
    const elementaryStreams = part ? part.elementaryStreams : frag.elementaryStreams;
    if (elementaryStreams[ElementaryStreamTypes.AUDIOVIDEO]) {
      buffersAppendedTo.push("audiovideo");
    } else {
      if (elementaryStreams[ElementaryStreamTypes.AUDIO]) {
        buffersAppendedTo.push("audio");
      }
      if (elementaryStreams[ElementaryStreamTypes.VIDEO]) {
        buffersAppendedTo.push("video");
      }
    }
    const onUnblocked = () => {
      const now2 = self.performance.now();
      frag.stats.buffering.end = now2;
      if (part) {
        part.stats.buffering.end = now2;
      }
      const stats = part ? part.stats : frag.stats;
      this.hls.trigger(Events.FRAG_BUFFERED, {
        frag,
        part,
        stats,
        id: frag.type
      });
    };
    if (buffersAppendedTo.length === 0) {
      this.warn(`Fragments must have at least one ElementaryStreamType set. type: ${frag.type} level: ${frag.level} sn: ${frag.sn}`);
    }
    this.blockBuffers(onUnblocked, buffersAppendedTo).catch((error) => {
      this.warn(`Fragment buffered callback ${error}`);
      this.stepOperationQueue(this.sourceBufferTypes);
    });
  }
  onFragChanged(event, data) {
    this.trimBuffers();
  }
  get bufferedToEnd() {
    return this.sourceBufferCount > 0 && !this.sourceBuffers.some(([type]) => {
      var _this$tracks$type3, _this$tracks$type4;
      return type && (!((_this$tracks$type3 = this.tracks[type]) != null && _this$tracks$type3.ended) || ((_this$tracks$type4 = this.tracks[type]) == null ? void 0 : _this$tracks$type4.ending));
    });
  }
  onBufferEos(event, data) {
    var _this$overrides;
    this.sourceBuffers.forEach(([type]) => {
      if (type) {
        const track = this.tracks[type];
        if (!data.type || data.type === type) {
          track.ending = true;
          if (!track.ended) {
            track.ended = true;
            this.log(`${type} buffer reached EOS`);
          }
        }
      }
    });
    const allowEndOfStream = ((_this$overrides = this.overrides) == null ? void 0 : _this$overrides.endOfStream) !== false;
    const allTracksEnding = this.sourceBufferCount > 0 && !this.sourceBuffers.some(([type]) => {
      var _this$tracks$type5;
      return type && !((_this$tracks$type5 = this.tracks[type]) != null && _this$tracks$type5.ended);
    });
    if (allTracksEnding) {
      if (allowEndOfStream) {
        this.log(`Queueing EOS`);
        this.blockUntilOpen(() => {
          this.tracksEnded();
          const {
            mediaSource
          } = this;
          if (!mediaSource || mediaSource.readyState !== "open") {
            if (mediaSource) {
              this.log(`Could not call mediaSource.endOfStream(). mediaSource.readyState: ${mediaSource.readyState}`);
            }
            return;
          }
          this.log(`Calling mediaSource.endOfStream()`);
          mediaSource.endOfStream();
          this.hls.trigger(Events.BUFFERED_TO_END, void 0);
        });
      } else {
        this.tracksEnded();
        this.hls.trigger(Events.BUFFERED_TO_END, void 0);
      }
    }
  }
  tracksEnded() {
    this.sourceBuffers.forEach(([type]) => {
      if (type !== null) {
        const track = this.tracks[type];
        if (track) {
          track.ending = false;
        }
      }
    });
  }
  onLevelUpdated(event, {
    details
  }) {
    if (!details.fragments.length) {
      return;
    }
    this.details = details;
    this.updateDuration();
  }
  updateDuration() {
    this.blockUntilOpen(() => {
      const durationAndRange = this.getDurationAndRange();
      if (!durationAndRange) {
        return;
      }
      this.updateMediaSource(durationAndRange);
    });
  }
  onError(event, data) {
    if (data.details === ErrorDetails.BUFFER_APPEND_ERROR && data.frag) {
      var _data$errorAction;
      const nextAutoLevel = (_data$errorAction = data.errorAction) == null ? void 0 : _data$errorAction.nextAutoLevel;
      if (isFiniteNumber(nextAutoLevel) && nextAutoLevel !== data.frag.level) {
        this.resetAppendErrors();
      }
    }
  }
  resetAppendErrors() {
    this.appendErrors = {
      audio: 0,
      video: 0,
      audiovideo: 0
    };
  }
  trimBuffers() {
    const {
      hls,
      details,
      media
    } = this;
    if (!media || details === null) {
      return;
    }
    if (!this.sourceBufferCount) {
      return;
    }
    const config = hls.config;
    const currentTime = media.currentTime;
    const targetDuration = details.levelTargetDuration;
    const backBufferLength = details.live && config.liveBackBufferLength !== null ? config.liveBackBufferLength : config.backBufferLength;
    if (isFiniteNumber(backBufferLength) && backBufferLength >= 0) {
      const maxBackBufferLength = Math.max(backBufferLength, targetDuration);
      const targetBackBufferPosition = Math.floor(currentTime / targetDuration) * targetDuration - maxBackBufferLength;
      this.flushBackBuffer(currentTime, targetDuration, targetBackBufferPosition);
    }
    if (isFiniteNumber(config.frontBufferFlushThreshold) && config.frontBufferFlushThreshold > 0) {
      const frontBufferLength = Math.max(config.maxBufferLength, config.frontBufferFlushThreshold);
      const maxFrontBufferLength = Math.max(frontBufferLength, targetDuration);
      const targetFrontBufferPosition = Math.floor(currentTime / targetDuration) * targetDuration + maxFrontBufferLength;
      this.flushFrontBuffer(currentTime, targetDuration, targetFrontBufferPosition);
    }
  }
  flushBackBuffer(currentTime, targetDuration, targetBackBufferPosition) {
    this.sourceBuffers.forEach(([type, sb]) => {
      if (sb) {
        const buffered = BufferHelper.getBuffered(sb);
        if (buffered.length > 0 && targetBackBufferPosition > buffered.start(0)) {
          var _this$details;
          this.hls.trigger(Events.BACK_BUFFER_REACHED, {
            bufferEnd: targetBackBufferPosition
          });
          const track = this.tracks[type];
          if ((_this$details = this.details) != null && _this$details.live) {
            this.hls.trigger(Events.LIVE_BACK_BUFFER_REACHED, {
              bufferEnd: targetBackBufferPosition
            });
          } else if (track != null && track.ended) {
            this.log(`Cannot flush ${type} back buffer while SourceBuffer is in ended state`);
            return;
          }
          this.hls.trigger(Events.BUFFER_FLUSHING, {
            startOffset: 0,
            endOffset: targetBackBufferPosition,
            type
          });
        }
      }
    });
  }
  flushFrontBuffer(currentTime, targetDuration, targetFrontBufferPosition) {
    this.sourceBuffers.forEach(([type, sb]) => {
      if (sb) {
        const buffered = BufferHelper.getBuffered(sb);
        const numBufferedRanges = buffered.length;
        if (numBufferedRanges < 2) {
          return;
        }
        const bufferStart = buffered.start(numBufferedRanges - 1);
        const bufferEnd = buffered.end(numBufferedRanges - 1);
        if (targetFrontBufferPosition > bufferStart || currentTime >= bufferStart && currentTime <= bufferEnd) {
          return;
        }
        this.hls.trigger(Events.BUFFER_FLUSHING, {
          startOffset: bufferStart,
          endOffset: Infinity,
          type
        });
      }
    });
  }
  getDurationAndRange() {
    var _this$overrides2;
    const {
      details,
      mediaSource
    } = this;
    if (!details || !this.media || (mediaSource == null ? void 0 : mediaSource.readyState) !== "open") {
      return null;
    }
    const playlistEnd = details.edge;
    if (details.live && this.hls.config.liveDurationInfinity) {
      const len = details.fragments.length;
      if (len && details.live && !!mediaSource.setLiveSeekableRange) {
        const start = Math.max(0, details.fragmentStart);
        const end = Math.max(start, playlistEnd);
        return {
          duration: Infinity,
          start,
          end
        };
      }
      return {
        duration: Infinity
      };
    }
    const overrideDuration = (_this$overrides2 = this.overrides) == null ? void 0 : _this$overrides2.duration;
    if (overrideDuration) {
      if (!isFiniteNumber(overrideDuration)) {
        return null;
      }
      return {
        duration: overrideDuration
      };
    }
    const mediaDuration = this.media.duration;
    const msDuration = isFiniteNumber(mediaSource.duration) ? mediaSource.duration : 0;
    if (playlistEnd > msDuration && playlistEnd > mediaDuration || !isFiniteNumber(mediaDuration)) {
      return {
        duration: playlistEnd
      };
    }
    return null;
  }
  updateMediaSource({
    duration,
    start,
    end
  }) {
    const mediaSource = this.mediaSource;
    if (!this.media || !mediaSource || mediaSource.readyState !== "open") {
      return;
    }
    if (mediaSource.duration !== duration) {
      if (isFiniteNumber(duration)) {
        this.log(`Updating MediaSource duration to ${duration.toFixed(3)}`);
      }
      mediaSource.duration = duration;
    }
    if (start !== void 0 && end !== void 0) {
      this.log(`MediaSource duration is set to ${mediaSource.duration}. Setting seekable range to ${start}-${end}.`);
      mediaSource.setLiveSeekableRange(start, end);
    }
  }
  get tracksReady() {
    const pendingTrackCount = this.pendingTrackCount;
    return pendingTrackCount > 0 && (pendingTrackCount >= this.bufferCodecEventsTotal || this.isPending(this.tracks.audiovideo));
  }
  checkPendingTracks() {
    const {
      bufferCodecEventsTotal,
      pendingTrackCount,
      tracks
    } = this;
    this.log(`checkPendingTracks (pending: ${pendingTrackCount} codec events expected: ${bufferCodecEventsTotal}) ${stringify(tracks)}`);
    if (this.tracksReady) {
      var _this$transferData4;
      const transferredTracks = (_this$transferData4 = this.transferData) == null ? void 0 : _this$transferData4.tracks;
      if (transferredTracks && Object.keys(transferredTracks).length) {
        this.attachTransferred();
      } else {
        this.createSourceBuffers();
      }
    }
  }
  bufferCreated() {
    if (this.sourceBufferCount) {
      const tracks = {};
      this.sourceBuffers.forEach(([type, buffer]) => {
        if (type) {
          const track = this.tracks[type];
          tracks[type] = {
            buffer,
            container: track.container,
            codec: track.codec,
            supplemental: track.supplemental,
            levelCodec: track.levelCodec,
            id: track.id,
            metadata: track.metadata
          };
        }
      });
      this.hls.trigger(Events.BUFFER_CREATED, {
        tracks
      });
      this.log(`SourceBuffers created. Running queue: ${this.operationQueue}`);
      this.sourceBuffers.forEach(([type]) => {
        this.executeNext(type);
      });
    } else {
      const error = new Error("could not create source buffer for media codec(s)");
      this.hls.trigger(Events.ERROR, {
        type: ErrorTypes.MEDIA_ERROR,
        details: ErrorDetails.BUFFER_INCOMPATIBLE_CODECS_ERROR,
        fatal: true,
        error,
        reason: error.message
      });
    }
  }
  createSourceBuffers() {
    const {
      tracks,
      sourceBuffers,
      mediaSource
    } = this;
    if (!mediaSource) {
      throw new Error("createSourceBuffers called when mediaSource was null");
    }
    for (const trackName in tracks) {
      const type = trackName;
      const track = tracks[type];
      if (this.isPending(track)) {
        const codec = this.getTrackCodec(track, type);
        const mimeType = `${track.container};codecs=${codec}`;
        track.codec = codec;
        this.log(`creating sourceBuffer(${mimeType})${this.currentOp(type) ? " Queued" : ""} ${stringify(track)}`);
        try {
          const sb = mediaSource.addSourceBuffer(mimeType);
          const sbIndex = sourceBufferNameToIndex(type);
          const sbTuple = [type, sb];
          sourceBuffers[sbIndex] = sbTuple;
          track.buffer = sb;
        } catch (error) {
          var _this$operationQueue;
          this.error(`error while trying to add sourceBuffer: ${error.message}`);
          this.shiftAndExecuteNext(type);
          (_this$operationQueue = this.operationQueue) == null ? void 0 : _this$operationQueue.removeBlockers();
          delete this.tracks[type];
          this.hls.trigger(Events.ERROR, {
            type: ErrorTypes.MEDIA_ERROR,
            details: ErrorDetails.BUFFER_ADD_CODEC_ERROR,
            fatal: false,
            error,
            sourceBufferName: type,
            mimeType,
            parent: track.id
          });
          return;
        }
        this.trackSourceBuffer(type, track);
      }
    }
    this.bufferCreated();
  }
  getTrackCodec(track, trackName) {
    const supplementalCodec = track.supplemental;
    let trackCodec = track.codec;
    if (supplementalCodec && (trackName === "video" || trackName === "audiovideo") && areCodecsMediaSourceSupported(supplementalCodec, "video")) {
      trackCodec = replaceVideoCodec(trackCodec, supplementalCodec);
    }
    const codec = pickMostCompleteCodecName(trackCodec, track.levelCodec);
    if (codec) {
      if (trackName.slice(0, 5) === "audio") {
        return getCodecCompatibleName(codec, this.appendSource);
      }
      return codec;
    }
    return "";
  }
  trackSourceBuffer(type, track) {
    const buffer = track.buffer;
    if (!buffer) {
      return;
    }
    const codec = this.getTrackCodec(track, type);
    this.tracks[type] = {
      buffer,
      codec,
      container: track.container,
      levelCodec: track.levelCodec,
      supplemental: track.supplemental,
      metadata: track.metadata,
      id: track.id,
      listeners: []
    };
    this.removeBufferListeners(type);
    this.addBufferListener(type, "updatestart", this.onSBUpdateStart);
    this.addBufferListener(type, "updateend", this.onSBUpdateEnd);
    this.addBufferListener(type, "error", this.onSBUpdateError);
    if (this.appendSource) {
      this.addBufferListener(type, "bufferedchange", (type2, event) => {
        const removedRanges = event.removedRanges;
        if (removedRanges != null && removedRanges.length) {
          this.hls.trigger(Events.BUFFER_FLUSHED, {
            type: type2
          });
        }
      });
    }
  }
  get mediaSrc() {
    var _this$media2, _this$media2$querySel;
    const media = ((_this$media2 = this.media) == null ? void 0 : (_this$media2$querySel = _this$media2.querySelector) == null ? void 0 : _this$media2$querySel.call(_this$media2, "source")) || this.media;
    return media == null ? void 0 : media.src;
  }
  onSBUpdateStart(type) {
    const operation = this.currentOp(type);
    if (!operation) {
      return;
    }
    operation.onStart();
  }
  onSBUpdateEnd(type) {
    var _this$mediaSource4;
    if (((_this$mediaSource4 = this.mediaSource) == null ? void 0 : _this$mediaSource4.readyState) === "closed") {
      this.resetBuffer(type);
      return;
    }
    const operation = this.currentOp(type);
    if (!operation) {
      return;
    }
    operation.onComplete();
    this.shiftAndExecuteNext(type);
  }
  onSBUpdateError(type, event) {
    var _this$mediaSource5;
    const error = new Error(`${type} SourceBuffer error. MediaSource readyState: ${(_this$mediaSource5 = this.mediaSource) == null ? void 0 : _this$mediaSource5.readyState}`);
    this.error(`${error}`, event);
    this.hls.trigger(Events.ERROR, {
      type: ErrorTypes.MEDIA_ERROR,
      details: ErrorDetails.BUFFER_APPENDING_ERROR,
      sourceBufferName: type,
      error,
      fatal: false
    });
    const operation = this.currentOp(type);
    if (operation) {
      operation.onError(error);
    }
  }
  updateTimestampOffset(sb, timestampOffset, tolerance, type, sn, cc) {
    const delta = timestampOffset - sb.timestampOffset;
    if (Math.abs(delta) >= tolerance) {
      this.log(`Updating ${type} SourceBuffer timestampOffset to ${timestampOffset} (sn: ${sn} cc: ${cc})`);
      sb.timestampOffset = timestampOffset;
    }
  }
  removeExecutor(type, startOffset, endOffset) {
    const {
      media,
      mediaSource
    } = this;
    const track = this.tracks[type];
    const sb = track == null ? void 0 : track.buffer;
    if (!media || !mediaSource || !sb) {
      this.warn(`Attempting to remove from the ${type} SourceBuffer, but it does not exist`);
      this.shiftAndExecuteNext(type);
      return;
    }
    const mediaDuration = isFiniteNumber(media.duration) ? media.duration : Infinity;
    const msDuration = isFiniteNumber(mediaSource.duration) ? mediaSource.duration : Infinity;
    const removeStart = Math.max(0, startOffset);
    const removeEnd = Math.min(endOffset, mediaDuration, msDuration);
    if (removeEnd > removeStart && (!track.ending || track.ended)) {
      track.ended = false;
      this.log(`Removing [${removeStart},${removeEnd}] from the ${type} SourceBuffer`);
      sb.remove(removeStart, removeEnd);
    } else {
      this.shiftAndExecuteNext(type);
    }
  }
  appendExecutor(data, type) {
    const track = this.tracks[type];
    const sb = track == null ? void 0 : track.buffer;
    if (!sb) {
      throw new HlsJsTrackRemovedError(`Attempting to append to the ${type} SourceBuffer, but it does not exist`);
    }
    track.ending = false;
    track.ended = false;
    sb.appendBuffer(data);
  }
  blockUntilOpen(callback) {
    if (this.isUpdating() || this.isQueued()) {
      this.blockBuffers(callback).catch((error) => {
        this.warn(`SourceBuffer blocked callback ${error}`);
        this.stepOperationQueue(this.sourceBufferTypes);
      });
    } else {
      try {
        callback();
      } catch (error) {
        this.warn(`Callback run without blocking ${this.operationQueue} ${error}`);
      }
    }
  }
  isUpdating() {
    return this.sourceBuffers.some(([type, sb]) => type && sb.updating);
  }
  isQueued() {
    return this.sourceBuffers.some(([type]) => type && !!this.currentOp(type));
  }
  isPending(track) {
    return !!track && !track.buffer;
  }
  blockBuffers(onUnblocked, bufferNames = this.sourceBufferTypes) {
    if (!bufferNames.length) {
      this.log("Blocking operation requested, but no SourceBuffers exist");
      return Promise.resolve().then(onUnblocked);
    }
    const {
      operationQueue
    } = this;
    const blockingOperations = bufferNames.map((type) => this.appendBlocker(type));
    const audioBlocked = bufferNames.length > 1 && !!this.blockedAudioAppend;
    if (audioBlocked) {
      this.unblockAudio();
    }
    return Promise.all(blockingOperations).then((result) => {
      if (operationQueue !== this.operationQueue) {
        return;
      }
      onUnblocked();
      this.stepOperationQueue(this.sourceBufferTypes);
    });
  }
  stepOperationQueue(bufferNames) {
    bufferNames.forEach((type) => {
      var _this$tracks$type6;
      const sb = (_this$tracks$type6 = this.tracks[type]) == null ? void 0 : _this$tracks$type6.buffer;
      if (!sb || sb.updating) {
        return;
      }
      this.shiftAndExecuteNext(type);
    });
  }
  append(operation, type, pending) {
    if (this.operationQueue) {
      this.operationQueue.append(operation, type, pending);
    }
  }
  appendBlocker(type) {
    if (this.operationQueue) {
      return this.operationQueue.appendBlocker(type);
    }
  }
  currentOp(type) {
    if (this.operationQueue) {
      return this.operationQueue.current(type);
    }
    return null;
  }
  executeNext(type) {
    if (type && this.operationQueue) {
      this.operationQueue.executeNext(type);
    }
  }
  shiftAndExecuteNext(type) {
    if (this.operationQueue) {
      this.operationQueue.shiftAndExecuteNext(type);
    }
  }
  get pendingTrackCount() {
    return Object.keys(this.tracks).reduce((acc, type) => acc + (this.isPending(this.tracks[type]) ? 1 : 0), 0);
  }
  get sourceBufferCount() {
    return this.sourceBuffers.reduce((acc, [type]) => acc + (type ? 1 : 0), 0);
  }
  get sourceBufferTypes() {
    return this.sourceBuffers.map(([type]) => type).filter((type) => !!type);
  }
  addBufferListener(type, event, fn) {
    const track = this.tracks[type];
    if (!track) {
      return;
    }
    const buffer = track.buffer;
    if (!buffer) {
      return;
    }
    const listener = fn.bind(this, type);
    track.listeners.push({
      event,
      listener
    });
    buffer.addEventListener(event, listener);
  }
  removeBufferListeners(type) {
    const track = this.tracks[type];
    if (!track) {
      return;
    }
    const buffer = track.buffer;
    if (!buffer) {
      return;
    }
    track.listeners.forEach((l) => {
      buffer.removeEventListener(l.event, l.listener);
    });
    track.listeners.length = 0;
  }
};
function removeSourceChildren(node) {
  const sourceChildren = node.querySelectorAll("source");
  [].slice.call(sourceChildren).forEach((source) => {
    node.removeChild(source);
  });
}
function addSource(media, url) {
  const source = self.document.createElement("source");
  source.type = "video/mp4";
  source.src = url;
  media.appendChild(source);
}
function sourceBufferNameToIndex(type) {
  return type === "audio" ? 1 : 0;
}
var CapLevelController = class {
  constructor(hls) {
    this.hls = void 0;
    this.autoLevelCapping = void 0;
    this.firstLevel = void 0;
    this.media = void 0;
    this.restrictedLevels = void 0;
    this.timer = void 0;
    this.clientRect = void 0;
    this.streamController = void 0;
    this.hls = hls;
    this.autoLevelCapping = Number.POSITIVE_INFINITY;
    this.firstLevel = -1;
    this.media = null;
    this.restrictedLevels = [];
    this.timer = void 0;
    this.clientRect = null;
    this.registerListeners();
  }
  setStreamController(streamController) {
    this.streamController = streamController;
  }
  destroy() {
    if (this.hls) {
      this.unregisterListener();
    }
    if (this.timer) {
      this.stopCapping();
    }
    this.media = null;
    this.clientRect = null;
    this.hls = this.streamController = null;
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.FPS_DROP_LEVEL_CAPPING, this.onFpsDropLevelCapping, this);
    hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.on(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
  }
  unregisterListener() {
    const {
      hls
    } = this;
    hls.off(Events.FPS_DROP_LEVEL_CAPPING, this.onFpsDropLevelCapping, this);
    hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
  }
  onFpsDropLevelCapping(event, data) {
    const level = this.hls.levels[data.droppedLevel];
    if (this.isLevelAllowed(level)) {
      this.restrictedLevels.push({
        bitrate: level.bitrate,
        height: level.height,
        width: level.width
      });
    }
  }
  onMediaAttaching(event, data) {
    this.media = data.media instanceof HTMLVideoElement ? data.media : null;
    this.clientRect = null;
    if (this.timer && this.hls.levels.length) {
      this.detectPlayerSize();
    }
  }
  onManifestParsed(event, data) {
    const hls = this.hls;
    this.restrictedLevels = [];
    this.firstLevel = data.firstLevel;
    if (hls.config.capLevelToPlayerSize && data.video) {
      this.startCapping();
    }
  }
  onLevelsUpdated(event, data) {
    if (this.timer && isFiniteNumber(this.autoLevelCapping)) {
      this.detectPlayerSize();
    }
  }
  onBufferCodecs(event, data) {
    const hls = this.hls;
    if (hls.config.capLevelToPlayerSize && data.video) {
      this.startCapping();
    }
  }
  onMediaDetaching() {
    this.stopCapping();
    this.media = null;
  }
  detectPlayerSize() {
    if (this.media) {
      if (this.mediaHeight <= 0 || this.mediaWidth <= 0) {
        this.clientRect = null;
        return;
      }
      const levels = this.hls.levels;
      if (levels.length) {
        const hls = this.hls;
        const maxLevel = this.getMaxLevel(levels.length - 1);
        if (maxLevel !== this.autoLevelCapping) {
          hls.logger.log(`Setting autoLevelCapping to ${maxLevel}: ${levels[maxLevel].height}p@${levels[maxLevel].bitrate} for media ${this.mediaWidth}x${this.mediaHeight}`);
        }
        hls.autoLevelCapping = maxLevel;
        if (hls.autoLevelEnabled && hls.autoLevelCapping > this.autoLevelCapping && this.streamController) {
          this.streamController.nextLevelSwitch();
        }
        this.autoLevelCapping = hls.autoLevelCapping;
      }
    }
  }
  getMaxLevel(capLevelIndex) {
    const levels = this.hls.levels;
    if (!levels.length) {
      return -1;
    }
    const validLevels = levels.filter((level, index) => this.isLevelAllowed(level) && index <= capLevelIndex);
    this.clientRect = null;
    return CapLevelController.getMaxLevelByMediaSize(validLevels, this.mediaWidth, this.mediaHeight);
  }
  startCapping() {
    if (this.timer) {
      return;
    }
    this.autoLevelCapping = Number.POSITIVE_INFINITY;
    self.clearInterval(this.timer);
    this.timer = self.setInterval(this.detectPlayerSize.bind(this), 1e3);
    this.detectPlayerSize();
  }
  stopCapping() {
    this.restrictedLevels = [];
    this.firstLevel = -1;
    this.autoLevelCapping = Number.POSITIVE_INFINITY;
    if (this.timer) {
      self.clearInterval(this.timer);
      this.timer = void 0;
    }
  }
  getDimensions() {
    if (this.clientRect) {
      return this.clientRect;
    }
    const media = this.media;
    const boundsRect = {
      width: 0,
      height: 0
    };
    if (media) {
      const clientRect = media.getBoundingClientRect();
      boundsRect.width = clientRect.width;
      boundsRect.height = clientRect.height;
      if (!boundsRect.width && !boundsRect.height) {
        boundsRect.width = clientRect.right - clientRect.left || media.width || 0;
        boundsRect.height = clientRect.bottom - clientRect.top || media.height || 0;
      }
    }
    this.clientRect = boundsRect;
    return boundsRect;
  }
  get mediaWidth() {
    return this.getDimensions().width * this.contentScaleFactor;
  }
  get mediaHeight() {
    return this.getDimensions().height * this.contentScaleFactor;
  }
  get contentScaleFactor() {
    let pixelRatio = 1;
    if (!this.hls.config.ignoreDevicePixelRatio) {
      try {
        pixelRatio = self.devicePixelRatio;
      } catch (e) {
      }
    }
    return Math.min(pixelRatio, this.hls.config.maxDevicePixelRatio);
  }
  isLevelAllowed(level) {
    const restrictedLevels = this.restrictedLevels;
    return !restrictedLevels.some((restrictedLevel) => {
      return level.bitrate === restrictedLevel.bitrate && level.width === restrictedLevel.width && level.height === restrictedLevel.height;
    });
  }
  static getMaxLevelByMediaSize(levels, width, height) {
    if (!(levels != null && levels.length)) {
      return -1;
    }
    const atGreatestBandwidth = (curLevel, nextLevel) => {
      if (!nextLevel) {
        return true;
      }
      return curLevel.width !== nextLevel.width || curLevel.height !== nextLevel.height;
    };
    let maxLevelIndex = levels.length - 1;
    const squareSize = Math.max(width, height);
    for (let i = 0; i < levels.length; i += 1) {
      const level = levels[i];
      if ((level.width >= squareSize || level.height >= squareSize) && atGreatestBandwidth(level, levels[i + 1])) {
        maxLevelIndex = i;
        break;
      }
    }
    return maxLevelIndex;
  }
};
var CmObjectType = {
  MANIFEST: "m",
  AUDIO: "a",
  VIDEO: "v",
  MUXED: "av",
  INIT: "i",
  CAPTION: "c",
  TIMED_TEXT: "tt",
  KEY: "k",
  OTHER: "o"
};
var CmcdObjectType = CmObjectType;
var CmStreamingFormat = {
  HLS: "h"
};
var CmcdStreamingFormat = CmStreamingFormat;
var CMCD_OBJECT = "CMCD-Object";
var CMCD_REQUEST = "CMCD-Request";
var CMCD_SESSION = "CMCD-Session";
var CMCD_STATUS = "CMCD-Status";
var CmcdHeaderField = {
  OBJECT: CMCD_OBJECT,
  REQUEST: CMCD_REQUEST,
  SESSION: CMCD_SESSION,
  STATUS: CMCD_STATUS
};
var CmcdHeaderMap = {
  [CmcdHeaderField.OBJECT]: ["br", "ab", "d", "ot", "tb", "tpb", "lb", "tab", "lab", "url"],
  [CmcdHeaderField.REQUEST]: ["pb", "bl", "tbl", "dl", "ltc", "mtp", "nor", "nrr", "rc", "sn", "sta", "su", "ttfb", "ttfbb", "ttlb", "cmsdd", "cmsds", "smrt", "df", "cs"],
  [CmcdHeaderField.SESSION]: ["cid", "pr", "sf", "sid", "st", "v", "msd"],
  [CmcdHeaderField.STATUS]: ["bs", "bsd", "cdn", "rtp", "bg", "pt", "ec", "e"]
};
var SfItem = class {
  constructor(value, params) {
    if (Array.isArray(value)) {
      value = value.map((v) => v instanceof SfItem ? v : new SfItem(v));
    }
    this.value = value;
    this.params = params;
  }
};
var DICT = "Dict";
function format(value) {
  if (Array.isArray(value)) {
    return JSON.stringify(value);
  }
  if (value instanceof Map) {
    return "Map{}";
  }
  if (value instanceof Set) {
    return "Set{}";
  }
  if (typeof value === "object") {
    return JSON.stringify(value);
  }
  return String(value);
}
function throwError(action, src, type, cause) {
  return new Error(`failed to ${action} "${format(src)}" as ${type}`, {
    cause
  });
}
function serializeError(src, type, cause) {
  return throwError("serialize", src, type, cause);
}
var SfToken = class {
  constructor(description) {
    this.description = description;
  }
};
var BARE_ITEM = "Bare Item";
var BOOLEAN = "Boolean";
function serializeBoolean(value) {
  if (typeof value !== "boolean") {
    throw serializeError(value, BOOLEAN);
  }
  return value ? "?1" : "?0";
}
function encodeBase64(binary) {
  return btoa(String.fromCharCode(...binary));
}
var BYTES = "Byte Sequence";
function serializeByteSequence(value) {
  if (ArrayBuffer.isView(value) === false) {
    throw serializeError(value, BYTES);
  }
  return `:${encodeBase64(value)}:`;
}
var INTEGER = "Integer";
function isInvalidInt(value) {
  return value < -999999999999999 || 999999999999999 < value;
}
function serializeInteger(value) {
  if (isInvalidInt(value)) {
    throw serializeError(value, INTEGER);
  }
  return value.toString();
}
function serializeDate(value) {
  return `@${serializeInteger(value.getTime() / 1e3)}`;
}
function roundToEven(value, precision) {
  if (value < 0) {
    return -roundToEven(-value, precision);
  }
  const decimalShift = Math.pow(10, precision);
  const isEquidistant = Math.abs(value * decimalShift % 1 - 0.5) < Number.EPSILON;
  if (isEquidistant) {
    const flooredValue = Math.floor(value * decimalShift);
    return (flooredValue % 2 === 0 ? flooredValue : flooredValue + 1) / decimalShift;
  } else {
    return Math.round(value * decimalShift) / decimalShift;
  }
}
var DECIMAL = "Decimal";
function serializeDecimal(value) {
  const roundedValue = roundToEven(value, 3);
  if (Math.floor(Math.abs(roundedValue)).toString().length > 12) {
    throw serializeError(value, DECIMAL);
  }
  const stringValue = roundedValue.toString();
  return stringValue.includes(".") ? stringValue : `${stringValue}.0`;
}
var STRING = "String";
var STRING_REGEX = /[\x00-\x1f\x7f]+/;
function serializeString(value) {
  if (STRING_REGEX.test(value)) {
    throw serializeError(value, STRING);
  }
  return `"${value.replace(/\\/g, `\\\\`).replace(/"/g, `\\"`)}"`;
}
function symbolToStr(symbol) {
  return symbol.description || symbol.toString().slice(7, -1);
}
var TOKEN = "Token";
function serializeToken(token) {
  const value = symbolToStr(token);
  if (/^([a-zA-Z*])([!#$%&'*+\-.^_`|~\w:/]*)$/.test(value) === false) {
    throw serializeError(value, TOKEN);
  }
  return value;
}
function serializeBareItem(value) {
  switch (typeof value) {
    case "number":
      if (!isFiniteNumber(value)) {
        throw serializeError(value, BARE_ITEM);
      }
      if (Number.isInteger(value)) {
        return serializeInteger(value);
      }
      return serializeDecimal(value);
    case "string":
      return serializeString(value);
    case "symbol":
      return serializeToken(value);
    case "boolean":
      return serializeBoolean(value);
    case "object":
      if (value instanceof Date) {
        return serializeDate(value);
      }
      if (value instanceof Uint8Array) {
        return serializeByteSequence(value);
      }
      if (value instanceof SfToken) {
        return serializeToken(value);
      }
    default:
      throw serializeError(value, BARE_ITEM);
  }
}
var KEY = "Key";
function serializeKey(value) {
  if (/^[a-z*][a-z0-9\-_.*]*$/.test(value) === false) {
    throw serializeError(value, KEY);
  }
  return value;
}
function serializeParams(params) {
  if (params == null) {
    return "";
  }
  return Object.entries(params).map(([key, value]) => {
    if (value === true) {
      return `;${serializeKey(key)}`;
    }
    return `;${serializeKey(key)}=${serializeBareItem(value)}`;
  }).join("");
}
function serializeItem(value) {
  if (value instanceof SfItem) {
    return `${serializeBareItem(value.value)}${serializeParams(value.params)}`;
  } else {
    return serializeBareItem(value);
  }
}
function serializeInnerList(value) {
  return `(${value.value.map(serializeItem).join(" ")})${serializeParams(value.params)}`;
}
function serializeDict(dict, options = {
  whitespace: true
}) {
  if (typeof dict !== "object") {
    throw serializeError(dict, DICT);
  }
  const entries = dict instanceof Map ? dict.entries() : Object.entries(dict);
  const optionalWhiteSpace = (options === null || options === void 0 ? void 0 : options.whitespace) ? " " : "";
  return Array.from(entries).map(([key, item]) => {
    if (item instanceof SfItem === false) {
      item = new SfItem(item);
    }
    let output = serializeKey(key);
    if (item.value === true) {
      output += serializeParams(item.params);
    } else {
      output += "=";
      if (Array.isArray(item.value)) {
        output += serializeInnerList(item);
      } else {
        output += serializeItem(item);
      }
    }
    return output;
  }).join(`,${optionalWhiteSpace}`);
}
function encodeSfDict(value, options) {
  return serializeDict(value, options);
}
function isTokenField(key) {
  return ["ot", "sf", "st", "e", "sta"].includes(key);
}
function isValid(value) {
  if (typeof value === "number") {
    return isFiniteNumber(value);
  }
  return value != null && value !== "" && value !== false;
}
function urlToRelativePath(url, base) {
  const to = new URL(url);
  const from = new URL(base);
  if (to.origin !== from.origin) {
    return url;
  }
  const toPath = to.pathname.split("/").slice(1);
  const fromPath = from.pathname.split("/").slice(1, -1);
  while (toPath[0] === fromPath[0]) {
    toPath.shift();
    fromPath.shift();
  }
  while (fromPath.length) {
    fromPath.shift();
    toPath.unshift("..");
  }
  return toPath.join("/");
}
var toRounded = (value) => Math.round(value);
var toUrlSafe = (value, options) => {
  if (options === null || options === void 0 ? void 0 : options.baseUrl) {
    value = urlToRelativePath(value, options.baseUrl);
  }
  return encodeURIComponent(value);
};
var toHundred = (value) => toRounded(value / 100) * 100;
var CmcdFormatters = {
  br: toRounded,
  d: toRounded,
  bl: toHundred,
  dl: toHundred,
  mtp: toHundred,
  nor: toUrlSafe,
  rtp: toHundred,
  tb: toRounded
};
function processCmcd(obj, options) {
  const results = {};
  if (obj == null || typeof obj !== "object") {
    return results;
  }
  const keys = Object.keys(obj).sort();
  const formatters = _extends({}, CmcdFormatters, options === null || options === void 0 ? void 0 : options.formatters);
  const filter = options === null || options === void 0 ? void 0 : options.filter;
  keys.forEach((key) => {
    if ((filter === null || filter === void 0 ? void 0 : filter(key)) === false) {
      return;
    }
    let value = obj[key];
    const formatter = formatters[key];
    if (formatter) {
      value = formatter(value, options);
    }
    if (key === "v" && value === 1) {
      return;
    }
    if (key == "pr" && value === 1) {
      return;
    }
    if (!isValid(value)) {
      return;
    }
    if (isTokenField(key) && typeof value === "string") {
      value = new SfToken(value);
    }
    results[key] = value;
  });
  return results;
}
function encodeCmcd(cmcd, options = {}) {
  if (!cmcd) {
    return "";
  }
  return encodeSfDict(processCmcd(cmcd, options), _extends({
    whitespace: false
  }, options));
}
function toCmcdHeaders(cmcd, options = {}) {
  const result = {};
  if (!cmcd) {
    return result;
  }
  const entries = Object.entries(cmcd);
  const headerMap = Object.entries(CmcdHeaderMap).concat(Object.entries((options === null || options === void 0 ? void 0 : options.customHeaderMap) || {}));
  const shards = entries.reduce((acc, entry) => {
    var _a, _b;
    const [key, value] = entry;
    const field = ((_a = headerMap.find((entry2) => entry2[1].includes(key))) === null || _a === void 0 ? void 0 : _a[0]) || CmcdHeaderField.REQUEST;
    (_b = acc[field]) !== null && _b !== void 0 ? _b : acc[field] = {};
    acc[field][key] = value;
    return acc;
  }, {});
  return Object.entries(shards).reduce((acc, [field, value]) => {
    acc[field] = encodeCmcd(value, options);
    return acc;
  }, result);
}
function appendCmcdHeaders(headers, cmcd, options) {
  return _extends(headers, toCmcdHeaders(cmcd, options));
}
var CMCD_PARAM = "CMCD";
function toCmcdQuery(cmcd, options = {}) {
  if (!cmcd) {
    return "";
  }
  const params = encodeCmcd(cmcd, options);
  return `${CMCD_PARAM}=${encodeURIComponent(params)}`;
}
var REGEX = /CMCD=[^&#]+/;
function appendCmcdQuery(url, cmcd, options) {
  const query = toCmcdQuery(cmcd, options);
  if (!query) {
    return url;
  }
  if (REGEX.test(url)) {
    return url.replace(REGEX, query);
  }
  const separator = url.includes("?") ? "&" : "?";
  return `${url}${separator}${query}`;
}
var CMCDController = class {
  constructor(hls) {
    this.hls = void 0;
    this.config = void 0;
    this.media = void 0;
    this.sid = void 0;
    this.cid = void 0;
    this.useHeaders = false;
    this.includeKeys = void 0;
    this.initialized = false;
    this.starved = false;
    this.buffering = true;
    this.audioBuffer = void 0;
    this.videoBuffer = void 0;
    this.onWaiting = () => {
      if (this.initialized) {
        this.starved = true;
      }
      this.buffering = true;
    };
    this.onPlaying = () => {
      if (!this.initialized) {
        this.initialized = true;
      }
      this.buffering = false;
    };
    this.applyPlaylistData = (context) => {
      try {
        this.apply(context, {
          ot: CmcdObjectType.MANIFEST,
          su: !this.initialized
        });
      } catch (error) {
        this.hls.logger.warn("Could not generate manifest CMCD data.", error);
      }
    };
    this.applyFragmentData = (context) => {
      try {
        const {
          frag,
          part
        } = context;
        const level = this.hls.levels[frag.level];
        const ot = this.getObjectType(frag);
        const data = {
          d: (part || frag).duration * 1e3,
          ot
        };
        if (ot === CmcdObjectType.VIDEO || ot === CmcdObjectType.AUDIO || ot == CmcdObjectType.MUXED) {
          data.br = level.bitrate / 1e3;
          data.tb = this.getTopBandwidth(ot) / 1e3;
          data.bl = this.getBufferLength(ot);
        }
        const next = part ? this.getNextPart(part) : this.getNextFrag(frag);
        if (next != null && next.url && next.url !== frag.url) {
          data.nor = next.url;
        }
        this.apply(context, data);
      } catch (error) {
        this.hls.logger.warn("Could not generate segment CMCD data.", error);
      }
    };
    this.hls = hls;
    const config = this.config = hls.config;
    const {
      cmcd
    } = config;
    if (cmcd != null) {
      config.pLoader = this.createPlaylistLoader();
      config.fLoader = this.createFragmentLoader();
      this.sid = cmcd.sessionId || hls.sessionId;
      this.cid = cmcd.contentId;
      this.useHeaders = cmcd.useHeaders === true;
      this.includeKeys = cmcd.includeKeys;
      this.registerListeners();
    }
  }
  registerListeners() {
    const hls = this.hls;
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHED, this.onMediaDetached, this);
    hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
  }
  unregisterListeners() {
    const hls = this.hls;
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHED, this.onMediaDetached, this);
    hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
  }
  destroy() {
    this.unregisterListeners();
    this.onMediaDetached();
    this.hls = this.config = this.audioBuffer = this.videoBuffer = null;
    this.onWaiting = this.onPlaying = this.media = null;
  }
  onMediaAttached(event, data) {
    this.media = data.media;
    this.media.addEventListener("waiting", this.onWaiting);
    this.media.addEventListener("playing", this.onPlaying);
  }
  onMediaDetached() {
    if (!this.media) {
      return;
    }
    this.media.removeEventListener("waiting", this.onWaiting);
    this.media.removeEventListener("playing", this.onPlaying);
    this.media = null;
  }
  onBufferCreated(event, data) {
    var _data$tracks$audio, _data$tracks$video;
    this.audioBuffer = (_data$tracks$audio = data.tracks.audio) == null ? void 0 : _data$tracks$audio.buffer;
    this.videoBuffer = (_data$tracks$video = data.tracks.video) == null ? void 0 : _data$tracks$video.buffer;
  }
  createData() {
    var _this$media;
    return {
      v: 1,
      sf: CmcdStreamingFormat.HLS,
      sid: this.sid,
      cid: this.cid,
      pr: (_this$media = this.media) == null ? void 0 : _this$media.playbackRate,
      mtp: this.hls.bandwidthEstimate / 1e3
    };
  }
  apply(context, data = {}) {
    _extends(data, this.createData());
    const isVideo = data.ot === CmcdObjectType.INIT || data.ot === CmcdObjectType.VIDEO || data.ot === CmcdObjectType.MUXED;
    if (this.starved && isVideo) {
      data.bs = true;
      data.su = true;
      this.starved = false;
    }
    if (data.su == null) {
      data.su = this.buffering;
    }
    const {
      includeKeys
    } = this;
    if (includeKeys) {
      data = Object.keys(data).reduce((acc, key) => {
        includeKeys.includes(key) && (acc[key] = data[key]);
        return acc;
      }, {});
    }
    const options = {
      baseUrl: context.url
    };
    if (this.useHeaders) {
      if (!context.headers) {
        context.headers = {};
      }
      appendCmcdHeaders(context.headers, data, options);
    } else {
      context.url = appendCmcdQuery(context.url, data, options);
    }
  }
  getNextFrag(fragment) {
    var _this$hls$levels$frag;
    const levelDetails = (_this$hls$levels$frag = this.hls.levels[fragment.level]) == null ? void 0 : _this$hls$levels$frag.details;
    if (levelDetails) {
      const index = fragment.sn - levelDetails.startSN;
      return levelDetails.fragments[index + 1];
    }
    return void 0;
  }
  getNextPart(part) {
    var _this$hls$levels$frag2, _this$hls$levels$frag3;
    const {
      index,
      fragment
    } = part;
    const partList = (_this$hls$levels$frag2 = this.hls.levels[fragment.level]) == null ? void 0 : (_this$hls$levels$frag3 = _this$hls$levels$frag2.details) == null ? void 0 : _this$hls$levels$frag3.partList;
    if (partList) {
      const {
        sn
      } = fragment;
      for (let i = partList.length - 1; i >= 0; i--) {
        const p = partList[i];
        if (p.index === index && p.fragment.sn === sn) {
          return partList[i + 1];
        }
      }
    }
    return void 0;
  }
  getObjectType(fragment) {
    const {
      type
    } = fragment;
    if (type === "subtitle") {
      return CmcdObjectType.TIMED_TEXT;
    }
    if (fragment.sn === "initSegment") {
      return CmcdObjectType.INIT;
    }
    if (type === "audio") {
      return CmcdObjectType.AUDIO;
    }
    if (type === "main") {
      if (!this.hls.audioTracks.length) {
        return CmcdObjectType.MUXED;
      }
      return CmcdObjectType.VIDEO;
    }
    return void 0;
  }
  getTopBandwidth(type) {
    let bitrate = 0;
    let levels;
    const hls = this.hls;
    if (type === CmcdObjectType.AUDIO) {
      levels = hls.audioTracks;
    } else {
      const max = hls.maxAutoLevel;
      const len = max > -1 ? max + 1 : hls.levels.length;
      levels = hls.levels.slice(0, len);
    }
    levels.forEach((level) => {
      if (level.bitrate > bitrate) {
        bitrate = level.bitrate;
      }
    });
    return bitrate > 0 ? bitrate : NaN;
  }
  getBufferLength(type) {
    const media = this.media;
    const buffer = type === CmcdObjectType.AUDIO ? this.audioBuffer : this.videoBuffer;
    if (!buffer || !media) {
      return NaN;
    }
    const info = BufferHelper.bufferInfo(buffer, media.currentTime, this.config.maxBufferHole);
    return info.len * 1e3;
  }
  createPlaylistLoader() {
    const {
      pLoader
    } = this.config;
    const apply = this.applyPlaylistData;
    const Ctor = pLoader || this.config.loader;
    return class CmcdPlaylistLoader {
      constructor(config) {
        this.loader = void 0;
        this.loader = new Ctor(config);
      }
      get stats() {
        return this.loader.stats;
      }
      get context() {
        return this.loader.context;
      }
      destroy() {
        this.loader.destroy();
      }
      abort() {
        this.loader.abort();
      }
      load(context, config, callbacks) {
        apply(context);
        this.loader.load(context, config, callbacks);
      }
    };
  }
  createFragmentLoader() {
    const {
      fLoader
    } = this.config;
    const apply = this.applyFragmentData;
    const Ctor = fLoader || this.config.loader;
    return class CmcdFragmentLoader {
      constructor(config) {
        this.loader = void 0;
        this.loader = new Ctor(config);
      }
      get stats() {
        return this.loader.stats;
      }
      get context() {
        return this.loader.context;
      }
      destroy() {
        this.loader.destroy();
      }
      abort() {
        this.loader.abort();
      }
      load(context, config, callbacks) {
        apply(context);
        this.loader.load(context, config, callbacks);
      }
    };
  }
};
var PATHWAY_PENALTY_DURATION_MS = 3e5;
var ContentSteeringController = class extends Logger {
  constructor(hls) {
    super("content-steering", hls.logger);
    this.hls = void 0;
    this.loader = null;
    this.uri = null;
    this.pathwayId = ".";
    this._pathwayPriority = null;
    this.timeToLoad = 300;
    this.reloadTimer = -1;
    this.updated = 0;
    this.started = false;
    this.enabled = true;
    this.levels = null;
    this.audioTracks = null;
    this.subtitleTracks = null;
    this.penalizedPathways = {};
    this.hls = hls;
    this.registerListeners();
  }
  registerListeners() {
    const hls = this.hls;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const hls = this.hls;
    if (!hls) {
      return;
    }
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  pathways() {
    return (this.levels || []).reduce((pathways, level) => {
      if (pathways.indexOf(level.pathwayId) === -1) {
        pathways.push(level.pathwayId);
      }
      return pathways;
    }, []);
  }
  get pathwayPriority() {
    return this._pathwayPriority;
  }
  set pathwayPriority(pathwayPriority) {
    this.updatePathwayPriority(pathwayPriority);
  }
  startLoad() {
    this.started = true;
    this.clearTimeout();
    if (this.enabled && this.uri) {
      if (this.updated) {
        const ttl = this.timeToLoad * 1e3 - (performance.now() - this.updated);
        if (ttl > 0) {
          this.scheduleRefresh(this.uri, ttl);
          return;
        }
      }
      this.loadSteeringManifest(this.uri);
    }
  }
  stopLoad() {
    this.started = false;
    if (this.loader) {
      this.loader.destroy();
      this.loader = null;
    }
    this.clearTimeout();
  }
  clearTimeout() {
    if (this.reloadTimer !== -1) {
      self.clearTimeout(this.reloadTimer);
      this.reloadTimer = -1;
    }
  }
  destroy() {
    this.unregisterListeners();
    this.stopLoad();
    this.hls = null;
    this.levels = this.audioTracks = this.subtitleTracks = null;
  }
  removeLevel(levelToRemove) {
    const levels = this.levels;
    if (levels) {
      this.levels = levels.filter((level) => level !== levelToRemove);
    }
  }
  onManifestLoading() {
    this.stopLoad();
    this.enabled = true;
    this.timeToLoad = 300;
    this.updated = 0;
    this.uri = null;
    this.pathwayId = ".";
    this.levels = this.audioTracks = this.subtitleTracks = null;
  }
  onManifestLoaded(event, data) {
    const {
      contentSteering
    } = data;
    if (contentSteering === null) {
      return;
    }
    this.pathwayId = contentSteering.pathwayId;
    this.uri = contentSteering.uri;
    if (this.started) {
      this.startLoad();
    }
  }
  onManifestParsed(event, data) {
    this.audioTracks = data.audioTracks;
    this.subtitleTracks = data.subtitleTracks;
  }
  onError(event, data) {
    const {
      errorAction
    } = data;
    if ((errorAction == null ? void 0 : errorAction.action) === NetworkErrorAction.SendAlternateToPenaltyBox && errorAction.flags === ErrorActionFlags.MoveAllAlternatesMatchingHost) {
      const levels = this.levels;
      let pathwayPriority = this._pathwayPriority;
      let errorPathway = this.pathwayId;
      if (data.context) {
        const {
          groupId,
          pathwayId,
          type
        } = data.context;
        if (groupId && levels) {
          errorPathway = this.getPathwayForGroupId(groupId, type, errorPathway);
        } else if (pathwayId) {
          errorPathway = pathwayId;
        }
      }
      if (!(errorPathway in this.penalizedPathways)) {
        this.penalizedPathways[errorPathway] = performance.now();
      }
      if (!pathwayPriority && levels) {
        pathwayPriority = this.pathways();
      }
      if (pathwayPriority && pathwayPriority.length > 1) {
        this.updatePathwayPriority(pathwayPriority);
        errorAction.resolved = this.pathwayId !== errorPathway;
      }
      if (data.details === ErrorDetails.BUFFER_APPEND_ERROR && !data.fatal) {
        errorAction.resolved = true;
      } else if (!errorAction.resolved) {
        this.warn(`Could not resolve ${data.details} ("${data.error.message}") with content-steering for Pathway: ${errorPathway} levels: ${levels ? levels.length : levels} priorities: ${stringify(pathwayPriority)} penalized: ${stringify(this.penalizedPathways)}`);
      }
    }
  }
  filterParsedLevels(levels) {
    this.levels = levels;
    let pathwayLevels = this.getLevelsForPathway(this.pathwayId);
    if (pathwayLevels.length === 0) {
      const pathwayId = levels[0].pathwayId;
      this.log(`No levels found in Pathway ${this.pathwayId}. Setting initial Pathway to "${pathwayId}"`);
      pathwayLevels = this.getLevelsForPathway(pathwayId);
      this.pathwayId = pathwayId;
    }
    if (pathwayLevels.length !== levels.length) {
      this.log(`Found ${pathwayLevels.length}/${levels.length} levels in Pathway "${this.pathwayId}"`);
    }
    return pathwayLevels;
  }
  getLevelsForPathway(pathwayId) {
    if (this.levels === null) {
      return [];
    }
    return this.levels.filter((level) => pathwayId === level.pathwayId);
  }
  updatePathwayPriority(pathwayPriority) {
    this._pathwayPriority = pathwayPriority;
    let levels;
    const penalizedPathways = this.penalizedPathways;
    const now2 = performance.now();
    Object.keys(penalizedPathways).forEach((pathwayId) => {
      if (now2 - penalizedPathways[pathwayId] > PATHWAY_PENALTY_DURATION_MS) {
        delete penalizedPathways[pathwayId];
      }
    });
    for (let i = 0; i < pathwayPriority.length; i++) {
      const pathwayId = pathwayPriority[i];
      if (pathwayId in penalizedPathways) {
        continue;
      }
      if (pathwayId === this.pathwayId) {
        return;
      }
      const selectedIndex = this.hls.nextLoadLevel;
      const selectedLevel = this.hls.levels[selectedIndex];
      levels = this.getLevelsForPathway(pathwayId);
      if (levels.length > 0) {
        this.log(`Setting Pathway to "${pathwayId}"`);
        this.pathwayId = pathwayId;
        reassignFragmentLevelIndexes(levels);
        this.hls.trigger(Events.LEVELS_UPDATED, {
          levels
        });
        const levelAfterChange = this.hls.levels[selectedIndex];
        if (selectedLevel && levelAfterChange && this.levels) {
          if (levelAfterChange.attrs["STABLE-VARIANT-ID"] !== selectedLevel.attrs["STABLE-VARIANT-ID"] && levelAfterChange.bitrate !== selectedLevel.bitrate) {
            this.log(`Unstable Pathways change from bitrate ${selectedLevel.bitrate} to ${levelAfterChange.bitrate}`);
          }
          this.hls.nextLoadLevel = selectedIndex;
        }
        break;
      }
    }
  }
  getPathwayForGroupId(groupId, type, defaultPathway) {
    const levels = this.getLevelsForPathway(defaultPathway).concat(this.levels || []);
    for (let i = 0; i < levels.length; i++) {
      if (type === PlaylistContextType.AUDIO_TRACK && levels[i].hasAudioGroup(groupId) || type === PlaylistContextType.SUBTITLE_TRACK && levels[i].hasSubtitleGroup(groupId)) {
        return levels[i].pathwayId;
      }
    }
    return defaultPathway;
  }
  clonePathways(pathwayClones) {
    const levels = this.levels;
    if (!levels) {
      return;
    }
    const audioGroupCloneMap = {};
    const subtitleGroupCloneMap = {};
    pathwayClones.forEach((pathwayClone) => {
      const {
        ID: cloneId,
        "BASE-ID": baseId,
        "URI-REPLACEMENT": uriReplacement
      } = pathwayClone;
      if (levels.some((level) => level.pathwayId === cloneId)) {
        return;
      }
      const clonedVariants = this.getLevelsForPathway(baseId).map((baseLevel) => {
        const attributes = new AttrList(baseLevel.attrs);
        attributes["PATHWAY-ID"] = cloneId;
        const clonedAudioGroupId = attributes.AUDIO && `${attributes.AUDIO}_clone_${cloneId}`;
        const clonedSubtitleGroupId = attributes.SUBTITLES && `${attributes.SUBTITLES}_clone_${cloneId}`;
        if (clonedAudioGroupId) {
          audioGroupCloneMap[attributes.AUDIO] = clonedAudioGroupId;
          attributes.AUDIO = clonedAudioGroupId;
        }
        if (clonedSubtitleGroupId) {
          subtitleGroupCloneMap[attributes.SUBTITLES] = clonedSubtitleGroupId;
          attributes.SUBTITLES = clonedSubtitleGroupId;
        }
        const url = performUriReplacement(baseLevel.uri, attributes["STABLE-VARIANT-ID"], "PER-VARIANT-URIS", uriReplacement);
        const clonedLevel = new Level({
          attrs: attributes,
          audioCodec: baseLevel.audioCodec,
          bitrate: baseLevel.bitrate,
          height: baseLevel.height,
          name: baseLevel.name,
          url,
          videoCodec: baseLevel.videoCodec,
          width: baseLevel.width
        });
        if (baseLevel.audioGroups) {
          for (let i = 1; i < baseLevel.audioGroups.length; i++) {
            clonedLevel.addGroupId("audio", `${baseLevel.audioGroups[i]}_clone_${cloneId}`);
          }
        }
        if (baseLevel.subtitleGroups) {
          for (let i = 1; i < baseLevel.subtitleGroups.length; i++) {
            clonedLevel.addGroupId("text", `${baseLevel.subtitleGroups[i]}_clone_${cloneId}`);
          }
        }
        return clonedLevel;
      });
      levels.push(...clonedVariants);
      cloneRenditionGroups(this.audioTracks, audioGroupCloneMap, uriReplacement, cloneId);
      cloneRenditionGroups(this.subtitleTracks, subtitleGroupCloneMap, uriReplacement, cloneId);
    });
  }
  loadSteeringManifest(uri) {
    const config = this.hls.config;
    const Loader = config.loader;
    if (this.loader) {
      this.loader.destroy();
    }
    this.loader = new Loader(config);
    let url;
    try {
      url = new self.URL(uri);
    } catch (error) {
      this.enabled = false;
      this.log(`Failed to parse Steering Manifest URI: ${uri}`);
      return;
    }
    if (url.protocol !== "data:") {
      const throughput = (this.hls.bandwidthEstimate || config.abrEwmaDefaultEstimate) | 0;
      url.searchParams.set("_HLS_pathway", this.pathwayId);
      url.searchParams.set("_HLS_throughput", "" + throughput);
    }
    const context = {
      responseType: "json",
      url: url.href
    };
    const loadPolicy = config.steeringManifestLoadPolicy.default;
    const legacyRetryCompatibility = loadPolicy.errorRetry || loadPolicy.timeoutRetry || {};
    const loaderConfig = {
      loadPolicy,
      timeout: loadPolicy.maxLoadTimeMs,
      maxRetry: legacyRetryCompatibility.maxNumRetry || 0,
      retryDelay: legacyRetryCompatibility.retryDelayMs || 0,
      maxRetryDelay: legacyRetryCompatibility.maxRetryDelayMs || 0
    };
    const callbacks = {
      onSuccess: (response, stats, context2, networkDetails) => {
        this.log(`Loaded steering manifest: "${url}"`);
        const steeringData = response.data;
        if ((steeringData == null ? void 0 : steeringData.VERSION) !== 1) {
          this.log(`Steering VERSION ${steeringData.VERSION} not supported!`);
          return;
        }
        this.updated = performance.now();
        this.timeToLoad = steeringData.TTL;
        const {
          "RELOAD-URI": reloadUri,
          "PATHWAY-CLONES": pathwayClones,
          "PATHWAY-PRIORITY": pathwayPriority
        } = steeringData;
        if (reloadUri) {
          try {
            this.uri = new self.URL(reloadUri, url).href;
          } catch (error) {
            this.enabled = false;
            this.log(`Failed to parse Steering Manifest RELOAD-URI: ${reloadUri}`);
            return;
          }
        }
        this.scheduleRefresh(this.uri || context2.url);
        if (pathwayClones) {
          this.clonePathways(pathwayClones);
        }
        const loadedSteeringData = {
          steeringManifest: steeringData,
          url: url.toString()
        };
        this.hls.trigger(Events.STEERING_MANIFEST_LOADED, loadedSteeringData);
        if (pathwayPriority) {
          this.updatePathwayPriority(pathwayPriority);
        }
      },
      onError: (error, context2, networkDetails, stats) => {
        this.log(`Error loading steering manifest: ${error.code} ${error.text} (${context2.url})`);
        this.stopLoad();
        if (error.code === 410) {
          this.enabled = false;
          this.log(`Steering manifest ${context2.url} no longer available`);
          return;
        }
        let ttl = this.timeToLoad * 1e3;
        if (error.code === 429) {
          const loader = this.loader;
          if (typeof (loader == null ? void 0 : loader.getResponseHeader) === "function") {
            const retryAfter = loader.getResponseHeader("Retry-After");
            if (retryAfter) {
              ttl = parseFloat(retryAfter) * 1e3;
            }
          }
          this.log(`Steering manifest ${context2.url} rate limited`);
          return;
        }
        this.scheduleRefresh(this.uri || context2.url, ttl);
      },
      onTimeout: (stats, context2, networkDetails) => {
        this.log(`Timeout loading steering manifest (${context2.url})`);
        this.scheduleRefresh(this.uri || context2.url);
      }
    };
    this.log(`Requesting steering manifest: ${url}`);
    this.loader.load(context, loaderConfig, callbacks);
  }
  scheduleRefresh(uri, ttlMs = this.timeToLoad * 1e3) {
    this.clearTimeout();
    this.reloadTimer = self.setTimeout(() => {
      var _this$hls;
      const media = (_this$hls = this.hls) == null ? void 0 : _this$hls.media;
      if (media && !media.ended) {
        this.loadSteeringManifest(uri);
        return;
      }
      this.scheduleRefresh(uri, this.timeToLoad * 1e3);
    }, ttlMs);
  }
};
function cloneRenditionGroups(tracks, groupCloneMap, uriReplacement, cloneId) {
  if (!tracks) {
    return;
  }
  Object.keys(groupCloneMap).forEach((audioGroupId) => {
    const clonedTracks = tracks.filter((track) => track.groupId === audioGroupId).map((track) => {
      const clonedTrack = _extends({}, track);
      clonedTrack.details = void 0;
      clonedTrack.attrs = new AttrList(clonedTrack.attrs);
      clonedTrack.url = clonedTrack.attrs.URI = performUriReplacement(track.url, track.attrs["STABLE-RENDITION-ID"], "PER-RENDITION-URIS", uriReplacement);
      clonedTrack.groupId = clonedTrack.attrs["GROUP-ID"] = groupCloneMap[audioGroupId];
      clonedTrack.attrs["PATHWAY-ID"] = cloneId;
      return clonedTrack;
    });
    tracks.push(...clonedTracks);
  });
}
function performUriReplacement(uri, stableId, perOptionKey, uriReplacement) {
  const {
    HOST: host,
    PARAMS: params,
    [perOptionKey]: perOptionUris
  } = uriReplacement;
  let perVariantUri;
  if (stableId) {
    perVariantUri = perOptionUris == null ? void 0 : perOptionUris[stableId];
    if (perVariantUri) {
      uri = perVariantUri;
    }
  }
  const url = new self.URL(uri);
  if (host && !perVariantUri) {
    url.host = host;
  }
  if (params) {
    Object.keys(params).sort().forEach((key) => {
      if (key) {
        url.searchParams.set(key, params[key]);
      }
    });
  }
  return url.href;
}
function addEventListener(el, type, listener) {
  removeEventListener(el, type, listener);
  el.addEventListener(type, listener);
}
function removeEventListener(el, type, listener) {
  el.removeEventListener(type, listener);
}
var EMEController = class extends Logger {
  constructor(hls) {
    super("eme", hls.logger);
    this.hls = void 0;
    this.config = void 0;
    this.media = null;
    this.keyFormatPromise = null;
    this.keySystemAccessPromises = {};
    this._requestLicenseFailureCount = 0;
    this.mediaKeySessions = [];
    this.keyIdToKeySessionPromise = {};
    this.mediaKeys = null;
    this.setMediaKeysQueue = EMEController.CDMCleanupPromise ? [EMEController.CDMCleanupPromise] : [];
    this.onWaitingForKey = (event) => {
      this.log(`"${event.type}" event`);
    };
    this.hls = hls;
    this.config = hls.config;
    this.registerListeners();
  }
  destroy() {
    this.onDestroying();
    this.onMediaDetached();
    const config = this.config;
    config.requestMediaKeySystemAccessFunc = null;
    config.licenseXhrSetup = config.licenseResponseCallback = void 0;
    config.drmSystems = config.drmSystemOptions = {};
    this.hls = this.config = this.keyIdToKeySessionPromise = null;
    this.onWaitingForKey = null;
  }
  registerListeners() {
    this.hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    this.hls.on(Events.MEDIA_DETACHED, this.onMediaDetached, this);
    this.hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    this.hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    this.hls.on(Events.DESTROYING, this.onDestroying, this);
  }
  unregisterListeners() {
    this.hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    this.hls.off(Events.MEDIA_DETACHED, this.onMediaDetached, this);
    this.hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    this.hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    this.hls.off(Events.DESTROYING, this.onDestroying, this);
  }
  getLicenseServerUrl(keySystem) {
    const {
      drmSystems,
      widevineLicenseUrl
    } = this.config;
    const keySystemConfiguration = drmSystems[keySystem];
    if (keySystemConfiguration) {
      return keySystemConfiguration.licenseUrl;
    }
    if (keySystem === KeySystems.WIDEVINE && widevineLicenseUrl) {
      return widevineLicenseUrl;
    }
  }
  getLicenseServerUrlOrThrow(keySystem) {
    const url = this.getLicenseServerUrl(keySystem);
    if (url === void 0) {
      throw new Error(`no license server URL configured for key-system "${keySystem}"`);
    }
    return url;
  }
  getServerCertificateUrl(keySystem) {
    const {
      drmSystems
    } = this.config;
    const keySystemConfiguration = drmSystems[keySystem];
    if (keySystemConfiguration) {
      return keySystemConfiguration.serverCertificateUrl;
    } else {
      this.log(`No Server Certificate in config.drmSystems["${keySystem}"]`);
    }
  }
  attemptKeySystemAccess(keySystemsToAttempt) {
    const levels = this.hls.levels;
    const uniqueCodec = (value, i, a) => !!value && a.indexOf(value) === i;
    const audioCodecs = levels.map((level) => level.audioCodec).filter(uniqueCodec);
    const videoCodecs = levels.map((level) => level.videoCodec).filter(uniqueCodec);
    if (audioCodecs.length + videoCodecs.length === 0) {
      videoCodecs.push("avc1.42e01e");
    }
    return new Promise((resolve, reject) => {
      const attempt = (keySystems) => {
        const keySystem = keySystems.shift();
        this.getMediaKeysPromise(keySystem, audioCodecs, videoCodecs).then((mediaKeys) => resolve({
          keySystem,
          mediaKeys
        })).catch((error) => {
          if (keySystems.length) {
            attempt(keySystems);
          } else if (error instanceof EMEKeyError) {
            reject(error);
          } else {
            reject(new EMEKeyError({
              type: ErrorTypes.KEY_SYSTEM_ERROR,
              details: ErrorDetails.KEY_SYSTEM_NO_ACCESS,
              error,
              fatal: true
            }, error.message));
          }
        });
      };
      attempt(keySystemsToAttempt);
    });
  }
  requestMediaKeySystemAccess(keySystem, supportedConfigurations) {
    const {
      requestMediaKeySystemAccessFunc
    } = this.config;
    if (!(typeof requestMediaKeySystemAccessFunc === "function")) {
      let errMessage = `Configured requestMediaKeySystemAccess is not a function ${requestMediaKeySystemAccessFunc}`;
      if (requestMediaKeySystemAccess === null && self.location.protocol === "http:") {
        errMessage = `navigator.requestMediaKeySystemAccess is not available over insecure protocol ${location.protocol}`;
      }
      return Promise.reject(new Error(errMessage));
    }
    return requestMediaKeySystemAccessFunc(keySystem, supportedConfigurations);
  }
  getMediaKeysPromise(keySystem, audioCodecs, videoCodecs) {
    const mediaKeySystemConfigs = getSupportedMediaKeySystemConfigurations(keySystem, audioCodecs, videoCodecs, this.config.drmSystemOptions);
    const keySystemAccessPromises = this.keySystemAccessPromises[keySystem];
    let keySystemAccess = keySystemAccessPromises == null ? void 0 : keySystemAccessPromises.keySystemAccess;
    if (!keySystemAccess) {
      this.log(`Requesting encrypted media "${keySystem}" key-system access with config: ${stringify(mediaKeySystemConfigs)}`);
      keySystemAccess = this.requestMediaKeySystemAccess(keySystem, mediaKeySystemConfigs);
      const _keySystemAccessPromises = this.keySystemAccessPromises[keySystem] = {
        keySystemAccess
      };
      keySystemAccess.catch((error) => {
        this.log(`Failed to obtain access to key-system "${keySystem}": ${error}`);
      });
      return keySystemAccess.then((mediaKeySystemAccess) => {
        this.log(`Access for key-system "${mediaKeySystemAccess.keySystem}" obtained`);
        const certificateRequest = this.fetchServerCertificate(keySystem);
        this.log(`Create media-keys for "${keySystem}"`);
        _keySystemAccessPromises.mediaKeys = mediaKeySystemAccess.createMediaKeys().then((mediaKeys) => {
          this.log(`Media-keys created for "${keySystem}"`);
          _keySystemAccessPromises.hasMediaKeys = true;
          return certificateRequest.then((certificate) => {
            if (certificate) {
              return this.setMediaKeysServerCertificate(mediaKeys, keySystem, certificate);
            }
            return mediaKeys;
          });
        });
        _keySystemAccessPromises.mediaKeys.catch((error) => {
          this.error(`Failed to create media-keys for "${keySystem}"}: ${error}`);
        });
        return _keySystemAccessPromises.mediaKeys;
      });
    }
    return keySystemAccess.then(() => keySystemAccessPromises.mediaKeys);
  }
  createMediaKeySessionContext({
    decryptdata,
    keySystem,
    mediaKeys
  }) {
    this.log(`Creating key-system session "${keySystem}" keyId: ${Hex.hexDump(decryptdata.keyId || [])}`);
    const mediaKeysSession = mediaKeys.createSession();
    const mediaKeySessionContext = {
      decryptdata,
      keySystem,
      mediaKeys,
      mediaKeysSession,
      keyStatus: "status-pending"
    };
    this.mediaKeySessions.push(mediaKeySessionContext);
    return mediaKeySessionContext;
  }
  renewKeySession(mediaKeySessionContext) {
    const decryptdata = mediaKeySessionContext.decryptdata;
    if (decryptdata.pssh) {
      const keySessionContext = this.createMediaKeySessionContext(mediaKeySessionContext);
      const keyId = this.getKeyIdString(decryptdata);
      const scheme = "cenc";
      this.keyIdToKeySessionPromise[keyId] = this.generateRequestWithPreferredKeySession(keySessionContext, scheme, decryptdata.pssh.buffer, "expired");
    } else {
      this.warn(`Could not renew expired session. Missing pssh initData.`);
    }
    this.removeSession(mediaKeySessionContext);
  }
  getKeyIdString(decryptdata) {
    if (!decryptdata) {
      throw new Error("Could not read keyId of undefined decryptdata");
    }
    if (decryptdata.keyId === null) {
      throw new Error("keyId is null");
    }
    return Hex.hexDump(decryptdata.keyId);
  }
  updateKeySession(mediaKeySessionContext, data) {
    var _mediaKeySessionConte;
    const keySession = mediaKeySessionContext.mediaKeysSession;
    this.log(`Updating key-session "${keySession.sessionId}" for keyID ${Hex.hexDump(((_mediaKeySessionConte = mediaKeySessionContext.decryptdata) == null ? void 0 : _mediaKeySessionConte.keyId) || [])}
      } (data length: ${data ? data.byteLength : data})`);
    return keySession.update(data);
  }
  getSelectedKeySystemFormats() {
    return Object.keys(this.keySystemAccessPromises).map((keySystem) => ({
      keySystem,
      hasMediaKeys: this.keySystemAccessPromises[keySystem].hasMediaKeys
    })).filter(({
      hasMediaKeys
    }) => !!hasMediaKeys).map(({
      keySystem
    }) => keySystemDomainToKeySystemFormat(keySystem)).filter((keySystem) => !!keySystem);
  }
  getKeySystemAccess(keySystemsToAttempt) {
    return this.getKeySystemSelectionPromise(keySystemsToAttempt).then(({
      keySystem,
      mediaKeys
    }) => {
      return this.attemptSetMediaKeys(keySystem, mediaKeys);
    });
  }
  selectKeySystem(keySystemsToAttempt) {
    return new Promise((resolve, reject) => {
      return this.getKeySystemSelectionPromise(keySystemsToAttempt).then(({
        keySystem
      }) => {
        const keySystemFormat = keySystemDomainToKeySystemFormat(keySystem);
        if (keySystemFormat) {
          resolve(keySystemFormat);
        } else {
          reject(new Error(`Unable to find format for key-system "${keySystem}"`));
        }
      }).catch(reject);
    });
  }
  selectKeySystemFormat(frag) {
    const keyFormats = Object.keys(frag.levelkeys || {});
    if (!this.keyFormatPromise) {
      this.log(`Selecting key-system from fragment (sn: ${frag.sn} ${frag.type}: ${frag.level}) key formats ${keyFormats.join(", ")}`);
      this.keyFormatPromise = this.getKeyFormatPromise(keyFormats);
    }
    return this.keyFormatPromise;
  }
  getKeyFormatPromise(keyFormats) {
    const keySystemsInConfig = getKeySystemsForConfig(this.config);
    const keySystemsToAttempt = keyFormats.map(keySystemFormatToKeySystemDomain).filter((value) => !!value && keySystemsInConfig.indexOf(value) !== -1);
    return this.selectKeySystem(keySystemsToAttempt);
  }
  loadKey(data) {
    const decryptdata = data.keyInfo.decryptdata;
    const keyId = this.getKeyIdString(decryptdata);
    const keyDetails = `(keyId: ${keyId} format: "${decryptdata.keyFormat}" method: ${decryptdata.method} uri: ${decryptdata.uri})`;
    this.log(`Starting session for key ${keyDetails}`);
    let keyContextPromise = this.keyIdToKeySessionPromise[keyId];
    if (!keyContextPromise) {
      keyContextPromise = this.getKeySystemForKeyPromise(decryptdata).then(({
        keySystem,
        mediaKeys
      }) => {
        this.throwIfDestroyed();
        this.log(`Handle encrypted media sn: ${data.frag.sn} ${data.frag.type}: ${data.frag.level} using key ${keyDetails}`);
        return this.attemptSetMediaKeys(keySystem, mediaKeys).then(() => {
          this.throwIfDestroyed();
          return this.createMediaKeySessionContext({
            keySystem,
            mediaKeys,
            decryptdata
          });
        });
      });
      const keySessionContextPromise = this.keyIdToKeySessionPromise[keyId] = keyContextPromise.then((keySessionContext) => {
        const scheme = "cenc";
        const initData = decryptdata.pssh ? decryptdata.pssh.buffer : null;
        return this.generateRequestWithPreferredKeySession(keySessionContext, scheme, initData, "playlist-key");
      });
      keySessionContextPromise.catch((error) => this.handleError(error));
    }
    return keyContextPromise;
  }
  throwIfDestroyed(message = "Invalid state") {
    if (!this.hls) {
      throw new Error("invalid state");
    }
  }
  handleError(error) {
    if (!this.hls) {
      return;
    }
    this.error(error.message);
    if (error instanceof EMEKeyError) {
      this.hls.trigger(Events.ERROR, error.data);
    } else {
      this.hls.trigger(Events.ERROR, {
        type: ErrorTypes.KEY_SYSTEM_ERROR,
        details: ErrorDetails.KEY_SYSTEM_NO_KEYS,
        error,
        fatal: true
      });
    }
  }
  getKeySystemForKeyPromise(decryptdata) {
    const keyId = this.getKeyIdString(decryptdata);
    const mediaKeySessionContext = this.keyIdToKeySessionPromise[keyId];
    if (!mediaKeySessionContext) {
      const keySystem = keySystemFormatToKeySystemDomain(decryptdata.keyFormat);
      const keySystemsToAttempt = keySystem ? [keySystem] : getKeySystemsForConfig(this.config);
      return this.attemptKeySystemAccess(keySystemsToAttempt);
    }
    return mediaKeySessionContext;
  }
  getKeySystemSelectionPromise(keySystemsToAttempt) {
    if (!keySystemsToAttempt.length) {
      keySystemsToAttempt = getKeySystemsForConfig(this.config);
    }
    if (keySystemsToAttempt.length === 0) {
      throw new EMEKeyError({
        type: ErrorTypes.KEY_SYSTEM_ERROR,
        details: ErrorDetails.KEY_SYSTEM_NO_CONFIGURED_LICENSE,
        fatal: true
      }, `Missing key-system license configuration options ${stringify({
        drmSystems: this.config.drmSystems
      })}`);
    }
    return this.attemptKeySystemAccess(keySystemsToAttempt);
  }
  attemptSetMediaKeys(keySystem, mediaKeys) {
    if (this.mediaKeys === mediaKeys) {
      return Promise.resolve();
    }
    const queue = this.setMediaKeysQueue.slice();
    this.log(`Setting media-keys for "${keySystem}"`);
    const setMediaKeysPromise = Promise.all(queue).then(() => {
      if (!this.media) {
        this.mediaKeys = null;
        throw new Error("Attempted to set mediaKeys without media element attached");
      }
      return this.media.setMediaKeys(mediaKeys);
    });
    this.mediaKeys = mediaKeys;
    this.setMediaKeysQueue.push(setMediaKeysPromise);
    return setMediaKeysPromise.then(() => {
      this.log(`Media-keys set for "${keySystem}"`);
      queue.push(setMediaKeysPromise);
      this.setMediaKeysQueue = this.setMediaKeysQueue.filter((p) => queue.indexOf(p) === -1);
    });
  }
  generateRequestWithPreferredKeySession(context, initDataType, initData, reason) {
    var _this$config$drmSyste, _this$config$drmSyste2;
    const generateRequestFilter = (_this$config$drmSyste = this.config.drmSystems) == null ? void 0 : (_this$config$drmSyste2 = _this$config$drmSyste[context.keySystem]) == null ? void 0 : _this$config$drmSyste2.generateRequest;
    if (generateRequestFilter) {
      try {
        const mappedInitData = generateRequestFilter.call(this.hls, initDataType, initData, context);
        if (!mappedInitData) {
          throw new Error("Invalid response from configured generateRequest filter");
        }
        initDataType = mappedInitData.initDataType;
        initData = mappedInitData.initData ? mappedInitData.initData : null;
        context.decryptdata.pssh = initData ? new Uint8Array(initData) : null;
      } catch (error) {
        var _this$hls;
        this.warn(error.message);
        if ((_this$hls = this.hls) != null && _this$hls.config.debug) {
          throw error;
        }
      }
    }
    if (initData === null) {
      this.log(`Skipping key-session request for "${reason}" (no initData)`);
      return Promise.resolve(context);
    }
    const keyId = this.getKeyIdString(context.decryptdata);
    this.log(`Generating key-session request for "${reason}": ${keyId} (init data type: ${initDataType} length: ${initData ? initData.byteLength : null})`);
    const licenseStatus = new EventEmitter();
    const onmessage = context._onmessage = (event) => {
      const keySession = context.mediaKeysSession;
      if (!keySession) {
        licenseStatus.emit("error", new Error("invalid state"));
        return;
      }
      const {
        messageType,
        message
      } = event;
      this.log(`"${messageType}" message event for session "${keySession.sessionId}" message size: ${message.byteLength}`);
      if (messageType === "license-request" || messageType === "license-renewal") {
        this.renewLicense(context, message).catch((error) => {
          if (licenseStatus.eventNames().length) {
            licenseStatus.emit("error", error);
          } else {
            this.handleError(error);
          }
        });
      } else if (messageType === "license-release") {
        if (context.keySystem === KeySystems.FAIRPLAY) {
          this.updateKeySession(context, strToUtf8array("acknowledged"));
          this.removeSession(context);
        }
      } else {
        this.warn(`unhandled media key message type "${messageType}"`);
      }
    };
    const onkeystatuseschange = context._onkeystatuseschange = (event) => {
      const keySession = context.mediaKeysSession;
      if (!keySession) {
        licenseStatus.emit("error", new Error("invalid state"));
        return;
      }
      this.onKeyStatusChange(context);
      const keyStatus = context.keyStatus;
      licenseStatus.emit("keyStatus", keyStatus);
      if (keyStatus === "expired") {
        this.warn(`${context.keySystem} expired for key ${keyId}`);
        this.renewKeySession(context);
      }
    };
    addEventListener(context.mediaKeysSession, "message", onmessage);
    addEventListener(context.mediaKeysSession, "keystatuseschange", onkeystatuseschange);
    const keyUsablePromise = new Promise((resolve, reject) => {
      licenseStatus.on("error", reject);
      licenseStatus.on("keyStatus", (keyStatus) => {
        if (keyStatus.startsWith("usable")) {
          resolve();
        } else if (keyStatus === "output-restricted") {
          reject(new EMEKeyError({
            type: ErrorTypes.KEY_SYSTEM_ERROR,
            details: ErrorDetails.KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED,
            fatal: false
          }, "HDCP level output restricted"));
        } else if (keyStatus === "internal-error") {
          reject(new EMEKeyError({
            type: ErrorTypes.KEY_SYSTEM_ERROR,
            details: ErrorDetails.KEY_SYSTEM_STATUS_INTERNAL_ERROR,
            fatal: true
          }, `key status changed to "${keyStatus}"`));
        } else if (keyStatus === "expired") {
          reject(new Error("key expired while generating request"));
        } else {
          this.warn(`unhandled key status change "${keyStatus}"`);
        }
      });
    });
    return context.mediaKeysSession.generateRequest(initDataType, initData).then(() => {
      var _context$mediaKeysSes;
      this.log(`Request generated for key-session "${(_context$mediaKeysSes = context.mediaKeysSession) == null ? void 0 : _context$mediaKeysSes.sessionId}" keyId: ${keyId}`);
    }).catch((error) => {
      throw new EMEKeyError({
        type: ErrorTypes.KEY_SYSTEM_ERROR,
        details: ErrorDetails.KEY_SYSTEM_NO_SESSION,
        error,
        fatal: false
      }, `Error generating key-session request: ${error}`);
    }).then(() => keyUsablePromise).catch((error) => {
      licenseStatus.removeAllListeners();
      this.removeSession(context);
      throw error;
    }).then(() => {
      licenseStatus.removeAllListeners();
      return context;
    });
  }
  onKeyStatusChange(mediaKeySessionContext) {
    mediaKeySessionContext.mediaKeysSession.keyStatuses.forEach((status2, keyId) => {
      if (typeof keyId === "string" && typeof status2 === "object") {
        const temp = keyId;
        keyId = status2;
        status2 = temp;
      }
      this.log(`key status change "${status2}" for keyStatuses keyId: ${Hex.hexDump("buffer" in keyId ? new Uint8Array(keyId.buffer, keyId.byteOffset, keyId.byteLength) : new Uint8Array(keyId))} session keyId: ${Hex.hexDump(new Uint8Array(mediaKeySessionContext.decryptdata.keyId || []))} uri: ${mediaKeySessionContext.decryptdata.uri}`);
      mediaKeySessionContext.keyStatus = status2;
    });
  }
  fetchServerCertificate(keySystem) {
    const config = this.config;
    const Loader = config.loader;
    const certLoader = new Loader(config);
    const url = this.getServerCertificateUrl(keySystem);
    if (!url) {
      return Promise.resolve();
    }
    this.log(`Fetching server certificate for "${keySystem}"`);
    return new Promise((resolve, reject) => {
      const loaderContext = {
        responseType: "arraybuffer",
        url
      };
      const loadPolicy = config.certLoadPolicy.default;
      const loaderConfig = {
        loadPolicy,
        timeout: loadPolicy.maxLoadTimeMs,
        maxRetry: 0,
        retryDelay: 0,
        maxRetryDelay: 0
      };
      const loaderCallbacks = {
        onSuccess: (response, stats, context, networkDetails) => {
          resolve(response.data);
        },
        onError: (response, contex, networkDetails, stats) => {
          reject(new EMEKeyError({
            type: ErrorTypes.KEY_SYSTEM_ERROR,
            details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED,
            fatal: true,
            networkDetails,
            response: _objectSpread2({
              url: loaderContext.url,
              data: void 0
            }, response)
          }, `"${keySystem}" certificate request failed (${url}). Status: ${response.code} (${response.text})`));
        },
        onTimeout: (stats, context, networkDetails) => {
          reject(new EMEKeyError({
            type: ErrorTypes.KEY_SYSTEM_ERROR,
            details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED,
            fatal: true,
            networkDetails,
            response: {
              url: loaderContext.url,
              data: void 0
            }
          }, `"${keySystem}" certificate request timed out (${url})`));
        },
        onAbort: (stats, context, networkDetails) => {
          reject(new Error("aborted"));
        }
      };
      certLoader.load(loaderContext, loaderConfig, loaderCallbacks);
    });
  }
  setMediaKeysServerCertificate(mediaKeys, keySystem, cert) {
    return new Promise((resolve, reject) => {
      mediaKeys.setServerCertificate(cert).then((success) => {
        this.log(`setServerCertificate ${success ? "success" : "not supported by CDM"} (${cert == null ? void 0 : cert.byteLength}) on "${keySystem}"`);
        resolve(mediaKeys);
      }).catch((error) => {
        reject(new EMEKeyError({
          type: ErrorTypes.KEY_SYSTEM_ERROR,
          details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED,
          error,
          fatal: true
        }, error.message));
      });
    });
  }
  renewLicense(context, keyMessage) {
    return this.requestLicense(context, new Uint8Array(keyMessage)).then((data) => {
      return this.updateKeySession(context, new Uint8Array(data)).catch((error) => {
        throw new EMEKeyError({
          type: ErrorTypes.KEY_SYSTEM_ERROR,
          details: ErrorDetails.KEY_SYSTEM_SESSION_UPDATE_FAILED,
          error,
          fatal: true
        }, error.message);
      });
    });
  }
  unpackPlayReadyKeyMessage(xhr, licenseChallenge) {
    const xmlString = String.fromCharCode.apply(null, new Uint16Array(licenseChallenge.buffer));
    if (!xmlString.includes("PlayReadyKeyMessage")) {
      xhr.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
      return licenseChallenge;
    }
    const keyMessageXml = new DOMParser().parseFromString(xmlString, "application/xml");
    const headers = keyMessageXml.querySelectorAll("HttpHeader");
    if (headers.length > 0) {
      let header;
      for (let i = 0, len = headers.length; i < len; i++) {
        var _header$querySelector, _header$querySelector2;
        header = headers[i];
        const name = (_header$querySelector = header.querySelector("name")) == null ? void 0 : _header$querySelector.textContent;
        const value = (_header$querySelector2 = header.querySelector("value")) == null ? void 0 : _header$querySelector2.textContent;
        if (name && value) {
          xhr.setRequestHeader(name, value);
        }
      }
    }
    const challengeElement = keyMessageXml.querySelector("Challenge");
    const challengeText = challengeElement == null ? void 0 : challengeElement.textContent;
    if (!challengeText) {
      throw new Error(`Cannot find <Challenge> in key message`);
    }
    return strToUtf8array(atob(challengeText));
  }
  setupLicenseXHR(xhr, url, keysListItem, licenseChallenge) {
    const licenseXhrSetup = this.config.licenseXhrSetup;
    if (!licenseXhrSetup) {
      xhr.open("POST", url, true);
      return Promise.resolve({
        xhr,
        licenseChallenge
      });
    }
    return Promise.resolve().then(() => {
      if (!keysListItem.decryptdata) {
        throw new Error("Key removed");
      }
      return licenseXhrSetup.call(this.hls, xhr, url, keysListItem, licenseChallenge);
    }).catch((error) => {
      if (!keysListItem.decryptdata) {
        throw error;
      }
      xhr.open("POST", url, true);
      return licenseXhrSetup.call(this.hls, xhr, url, keysListItem, licenseChallenge);
    }).then((licenseXhrSetupResult) => {
      if (!xhr.readyState) {
        xhr.open("POST", url, true);
      }
      const finalLicenseChallenge = licenseXhrSetupResult ? licenseXhrSetupResult : licenseChallenge;
      return {
        xhr,
        licenseChallenge: finalLicenseChallenge
      };
    });
  }
  requestLicense(keySessionContext, licenseChallenge) {
    const keyLoadPolicy = this.config.keyLoadPolicy.default;
    return new Promise((resolve, reject) => {
      const url = this.getLicenseServerUrlOrThrow(keySessionContext.keySystem);
      this.log(`Sending license request to URL: ${url}`);
      const xhr = new XMLHttpRequest();
      xhr.responseType = "arraybuffer";
      xhr.onreadystatechange = () => {
        if (!this.hls || !keySessionContext.mediaKeysSession) {
          return reject(new Error("invalid state"));
        }
        if (xhr.readyState === 4) {
          if (xhr.status === 200) {
            this._requestLicenseFailureCount = 0;
            let data = xhr.response;
            this.log(`License received ${data instanceof ArrayBuffer ? data.byteLength : data}`);
            const licenseResponseCallback = this.config.licenseResponseCallback;
            if (licenseResponseCallback) {
              try {
                data = licenseResponseCallback.call(this.hls, xhr, url, keySessionContext);
              } catch (error) {
                this.error(error);
              }
            }
            resolve(data);
          } else {
            const retryConfig = keyLoadPolicy.errorRetry;
            const maxNumRetry = retryConfig ? retryConfig.maxNumRetry : 0;
            this._requestLicenseFailureCount++;
            if (this._requestLicenseFailureCount > maxNumRetry || xhr.status >= 400 && xhr.status < 500) {
              reject(new EMEKeyError({
                type: ErrorTypes.KEY_SYSTEM_ERROR,
                details: ErrorDetails.KEY_SYSTEM_LICENSE_REQUEST_FAILED,
                fatal: true,
                networkDetails: xhr,
                response: {
                  url,
                  data: void 0,
                  code: xhr.status,
                  text: xhr.statusText
                }
              }, `License Request XHR failed (${url}). Status: ${xhr.status} (${xhr.statusText})`));
            } else {
              const attemptsLeft = maxNumRetry - this._requestLicenseFailureCount + 1;
              this.warn(`Retrying license request, ${attemptsLeft} attempts left`);
              this.requestLicense(keySessionContext, licenseChallenge).then(resolve, reject);
            }
          }
        }
      };
      if (keySessionContext.licenseXhr && keySessionContext.licenseXhr.readyState !== XMLHttpRequest.DONE) {
        keySessionContext.licenseXhr.abort();
      }
      keySessionContext.licenseXhr = xhr;
      this.setupLicenseXHR(xhr, url, keySessionContext, licenseChallenge).then(({
        xhr: xhr2,
        licenseChallenge: licenseChallenge2
      }) => {
        if (keySessionContext.keySystem == KeySystems.PLAYREADY) {
          licenseChallenge2 = this.unpackPlayReadyKeyMessage(xhr2, licenseChallenge2);
        }
        xhr2.send(licenseChallenge2);
      });
    });
  }
  onDestroying() {
    this.unregisterListeners();
    this._clear();
  }
  onMediaAttached(event, data) {
    if (!this.config.emeEnabled) {
      return;
    }
    const media = data.media;
    this.media = media;
    addEventListener(media, "waitingforkey", this.onWaitingForKey);
  }
  onMediaDetached() {
    const media = this.media;
    if (media) {
      removeEventListener(media, "waitingforkey", this.onWaitingForKey);
      this.media = null;
      this.mediaKeys = null;
    }
  }
  _clear() {
    var _media$setMediaKeys;
    this._requestLicenseFailureCount = 0;
    this.keyIdToKeySessionPromise = {};
    if (!this.mediaKeys && !this.mediaKeySessions.length) {
      return;
    }
    const media = this.media;
    const mediaKeysList = this.mediaKeySessions.slice();
    this.mediaKeySessions = [];
    this.mediaKeys = null;
    LevelKey.clearKeyUriToKeyIdMap();
    const keySessionCount = mediaKeysList.length;
    EMEController.CDMCleanupPromise = Promise.all(mediaKeysList.map((mediaKeySessionContext) => this.removeSession(mediaKeySessionContext)).concat(media == null ? void 0 : (_media$setMediaKeys = media.setMediaKeys(null)) == null ? void 0 : _media$setMediaKeys.catch((error) => {
      var _this$hls2;
      this.log(`Could not clear media keys: ${error}`);
      (_this$hls2 = this.hls) == null ? void 0 : _this$hls2.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.KEY_SYSTEM_DESTROY_MEDIA_KEYS_ERROR,
        fatal: false,
        error: new Error(`Could not clear media keys: ${error}`)
      });
    }))).catch((error) => {
      var _this$hls3;
      this.log(`Could not close sessions and clear media keys: ${error}`);
      (_this$hls3 = this.hls) == null ? void 0 : _this$hls3.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.KEY_SYSTEM_DESTROY_CLOSE_SESSION_ERROR,
        fatal: false,
        error: new Error(`Could not close sessions and clear media keys: ${error}`)
      });
    }).then(() => {
      if (keySessionCount) {
        this.log("finished closing key sessions and clearing media keys");
      }
    });
  }
  onManifestLoading() {
    this.keyFormatPromise = null;
  }
  onManifestLoaded(event, {
    sessionKeys
  }) {
    if (!sessionKeys || !this.config.emeEnabled) {
      return;
    }
    if (!this.keyFormatPromise) {
      const keyFormats = sessionKeys.reduce((formats, sessionKey) => {
        if (formats.indexOf(sessionKey.keyFormat) === -1) {
          formats.push(sessionKey.keyFormat);
        }
        return formats;
      }, []);
      this.log(`Selecting key-system from session-keys ${keyFormats.join(", ")}`);
      this.keyFormatPromise = this.getKeyFormatPromise(keyFormats);
    }
  }
  removeSession(mediaKeySessionContext) {
    const {
      mediaKeysSession,
      licenseXhr
    } = mediaKeySessionContext;
    if (mediaKeysSession) {
      this.log(`Remove licenses and keys and close session ${mediaKeysSession.sessionId}`);
      if (mediaKeySessionContext._onmessage) {
        mediaKeysSession.removeEventListener("message", mediaKeySessionContext._onmessage);
        mediaKeySessionContext._onmessage = void 0;
      }
      if (mediaKeySessionContext._onkeystatuseschange) {
        mediaKeysSession.removeEventListener("keystatuseschange", mediaKeySessionContext._onkeystatuseschange);
        mediaKeySessionContext._onkeystatuseschange = void 0;
      }
      if (licenseXhr && licenseXhr.readyState !== XMLHttpRequest.DONE) {
        licenseXhr.abort();
      }
      mediaKeySessionContext.mediaKeysSession = mediaKeySessionContext.decryptdata = mediaKeySessionContext.licenseXhr = void 0;
      const index = this.mediaKeySessions.indexOf(mediaKeySessionContext);
      if (index > -1) {
        this.mediaKeySessions.splice(index, 1);
      }
      const {
        drmSystemOptions
      } = this.config;
      const removePromise = isPersistentSessionType(drmSystemOptions) ? new Promise((resolve, reject) => {
        self.setTimeout(() => reject(new Error(`MediaKeySession.remove() timeout`)), 8e3);
        mediaKeysSession.remove().then(resolve);
      }) : Promise.resolve();
      return removePromise.catch((error) => {
        var _this$hls4;
        this.log(`Could not remove session: ${error}`);
        (_this$hls4 = this.hls) == null ? void 0 : _this$hls4.trigger(Events.ERROR, {
          type: ErrorTypes.OTHER_ERROR,
          details: ErrorDetails.KEY_SYSTEM_DESTROY_REMOVE_SESSION_ERROR,
          fatal: false,
          error: new Error(`Could not remove session: ${error}`)
        });
      }).then(() => {
        return mediaKeysSession.close();
      }).catch((error) => {
        var _this$hls5;
        this.log(`Could not close session: ${error}`);
        (_this$hls5 = this.hls) == null ? void 0 : _this$hls5.trigger(Events.ERROR, {
          type: ErrorTypes.OTHER_ERROR,
          details: ErrorDetails.KEY_SYSTEM_DESTROY_CLOSE_SESSION_ERROR,
          fatal: false,
          error: new Error(`Could not close session: ${error}`)
        });
      });
    }
  }
};
EMEController.CDMCleanupPromise = void 0;
var EMEKeyError = class extends Error {
  constructor(data, message) {
    super(message);
    this.data = void 0;
    data.error || (data.error = new Error(message));
    this.data = data;
    data.err = data.error;
  }
};
var FPSController = class {
  constructor(hls) {
    this.hls = void 0;
    this.isVideoPlaybackQualityAvailable = false;
    this.timer = void 0;
    this.media = null;
    this.lastTime = void 0;
    this.lastDroppedFrames = 0;
    this.lastDecodedFrames = 0;
    this.streamController = void 0;
    this.hls = hls;
    this.registerListeners();
  }
  setStreamController(streamController) {
    this.streamController = streamController;
  }
  registerListeners() {
    this.hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    this.hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
  }
  unregisterListeners() {
    this.hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    this.hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
  }
  destroy() {
    if (this.timer) {
      clearInterval(this.timer);
    }
    this.unregisterListeners();
    this.isVideoPlaybackQualityAvailable = false;
    this.media = null;
  }
  onMediaAttaching(event, data) {
    const config = this.hls.config;
    if (config.capLevelOnFPSDrop) {
      const media = data.media instanceof self.HTMLVideoElement ? data.media : null;
      this.media = media;
      if (media && typeof media.getVideoPlaybackQuality === "function") {
        this.isVideoPlaybackQualityAvailable = true;
      }
      self.clearInterval(this.timer);
      this.timer = self.setInterval(this.checkFPSInterval.bind(this), config.fpsDroppedMonitoringPeriod);
    }
  }
  onMediaDetaching() {
    this.media = null;
  }
  checkFPS(video, decodedFrames, droppedFrames) {
    const currentTime = performance.now();
    if (decodedFrames) {
      if (this.lastTime) {
        const currentPeriod = currentTime - this.lastTime;
        const currentDropped = droppedFrames - this.lastDroppedFrames;
        const currentDecoded = decodedFrames - this.lastDecodedFrames;
        const droppedFPS = 1e3 * currentDropped / currentPeriod;
        const hls = this.hls;
        hls.trigger(Events.FPS_DROP, {
          currentDropped,
          currentDecoded,
          totalDroppedFrames: droppedFrames
        });
        if (droppedFPS > 0) {
          if (currentDropped > hls.config.fpsDroppedMonitoringThreshold * currentDecoded) {
            let currentLevel = hls.currentLevel;
            hls.logger.warn("drop FPS ratio greater than max allowed value for currentLevel: " + currentLevel);
            if (currentLevel > 0 && (hls.autoLevelCapping === -1 || hls.autoLevelCapping >= currentLevel)) {
              currentLevel = currentLevel - 1;
              hls.trigger(Events.FPS_DROP_LEVEL_CAPPING, {
                level: currentLevel,
                droppedLevel: hls.currentLevel
              });
              hls.autoLevelCapping = currentLevel;
              this.streamController.nextLevelSwitch();
            }
          }
        }
      }
      this.lastTime = currentTime;
      this.lastDroppedFrames = droppedFrames;
      this.lastDecodedFrames = decodedFrames;
    }
  }
  checkFPSInterval() {
    const video = this.media;
    if (video) {
      if (this.isVideoPlaybackQualityAvailable) {
        const videoPlaybackQuality = video.getVideoPlaybackQuality();
        this.checkFPS(video, videoPlaybackQuality.totalVideoFrames, videoPlaybackQuality.droppedVideoFrames);
      } else {
        this.checkFPS(video, video.webkitDecodedFrameCount, video.webkitDroppedFrameCount);
      }
    }
  }
};
function sendAddTrackEvent(track, videoEl) {
  let event;
  try {
    event = new Event("addtrack");
  } catch (err) {
    event = document.createEvent("Event");
    event.initEvent("addtrack", false, false);
  }
  event.track = track;
  videoEl.dispatchEvent(event);
}
function addCueToTrack(track, cue) {
  const mode = track.mode;
  if (mode === "disabled") {
    track.mode = "hidden";
  }
  if (track.cues && !track.cues.getCueById(cue.id)) {
    try {
      track.addCue(cue);
      if (!track.cues.getCueById(cue.id)) {
        throw new Error(`addCue is failed for: ${cue}`);
      }
    } catch (err) {
      logger.debug(`[texttrack-utils]: ${err}`);
      try {
        const textTrackCue = new self.TextTrackCue(cue.startTime, cue.endTime, cue.text);
        textTrackCue.id = cue.id;
        track.addCue(textTrackCue);
      } catch (err2) {
        logger.debug(`[texttrack-utils]: Legacy TextTrackCue fallback failed: ${err2}`);
      }
    }
  }
  if (mode === "disabled") {
    track.mode = mode;
  }
}
function clearCurrentCues(track, enterHandler) {
  const mode = track.mode;
  if (mode === "disabled") {
    track.mode = "hidden";
  }
  if (track.cues) {
    for (let i = track.cues.length; i--; ) {
      if (enterHandler) {
        track.cues[i].removeEventListener("enter", enterHandler);
      }
      track.removeCue(track.cues[i]);
    }
  }
  if (mode === "disabled") {
    track.mode = mode;
  }
}
function removeCuesInRange(track, start, end, predicate) {
  const mode = track.mode;
  if (mode === "disabled") {
    track.mode = "hidden";
  }
  if (track.cues && track.cues.length > 0) {
    const cues = getCuesInRange(track.cues, start, end);
    for (let i = 0; i < cues.length; i++) {
      if (!predicate || predicate(cues[i])) {
        track.removeCue(cues[i]);
      }
    }
  }
  if (mode === "disabled") {
    track.mode = mode;
  }
}
function getFirstCueIndexFromTime(cues, time) {
  if (time <= cues[0].startTime) {
    return 0;
  }
  const len = cues.length - 1;
  if (time > cues[len].endTime) {
    return -1;
  }
  let left = 0;
  let right = len;
  let mid;
  while (left <= right) {
    mid = Math.floor((right + left) / 2);
    if (time < cues[mid].startTime) {
      right = mid - 1;
    } else if (time > cues[mid].startTime && left < len) {
      left = mid + 1;
    } else {
      return mid;
    }
  }
  return cues[left].startTime - time < time - cues[right].startTime ? left : right;
}
function getCuesInRange(cues, start, end) {
  const cuesFound = [];
  const firstCueInRange = getFirstCueIndexFromTime(cues, start);
  if (firstCueInRange > -1) {
    for (let i = firstCueInRange, len = cues.length; i < len; i++) {
      const cue = cues[i];
      if (cue.startTime >= start && cue.endTime <= end) {
        cuesFound.push(cue);
      } else if (cue.startTime > end) {
        return cuesFound;
      }
    }
  }
  return cuesFound;
}
function filterSubtitleTracks(textTrackList) {
  const tracks = [];
  for (let i = 0; i < textTrackList.length; i++) {
    const track = textTrackList[i];
    if ((track.kind === "subtitles" || track.kind === "captions") && track.label) {
      tracks.push(textTrackList[i]);
    }
  }
  return tracks;
}
var SubtitleTrackController = class extends BasePlaylistController {
  constructor(hls) {
    super(hls, "subtitle-track-controller");
    this.media = null;
    this.tracks = [];
    this.groupIds = null;
    this.tracksInGroup = [];
    this.trackId = -1;
    this.currentTrack = null;
    this.selectDefaultTrack = true;
    this.queuedDefaultTrack = -1;
    this.useTextTrackPolling = false;
    this.subtitlePollingInterval = -1;
    this._subtitleDisplay = true;
    this.asyncPollTrackChange = () => this.pollTrackChange(0);
    this.onTextTracksChanged = () => {
      if (!this.useTextTrackPolling) {
        self.clearInterval(this.subtitlePollingInterval);
      }
      if (!this.media || !this.hls.config.renderTextTracksNatively) {
        return;
      }
      let textTrack = null;
      const tracks = filterSubtitleTracks(this.media.textTracks);
      for (let i = 0; i < tracks.length; i++) {
        if (tracks[i].mode === "hidden") {
          textTrack = tracks[i];
        } else if (tracks[i].mode === "showing") {
          textTrack = tracks[i];
          break;
        }
      }
      const trackId = this.findTrackForTextTrack(textTrack);
      if (this.subtitleTrack !== trackId) {
        this.setSubtitleTrack(trackId);
      }
    };
    this.registerListeners();
  }
  destroy() {
    this.unregisterListeners();
    this.tracks.length = 0;
    this.tracksInGroup.length = 0;
    this.currentTrack = null;
    this.onTextTracksChanged = this.asyncPollTrackChange = null;
    super.destroy();
  }
  get subtitleDisplay() {
    return this._subtitleDisplay;
  }
  set subtitleDisplay(value) {
    this._subtitleDisplay = value;
    if (this.trackId > -1) {
      this.toggleTrackModes();
    }
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.on(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
    hls.off(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  onMediaAttached(event, data) {
    this.media = data.media;
    if (!this.media) {
      return;
    }
    if (this.queuedDefaultTrack > -1) {
      this.subtitleTrack = this.queuedDefaultTrack;
      this.queuedDefaultTrack = -1;
    }
    this.useTextTrackPolling = !(this.media.textTracks && "onchange" in this.media.textTracks);
    if (this.useTextTrackPolling) {
      this.pollTrackChange(500);
    } else {
      this.media.textTracks.addEventListener("change", this.asyncPollTrackChange);
    }
  }
  pollTrackChange(timeout) {
    self.clearInterval(this.subtitlePollingInterval);
    this.subtitlePollingInterval = self.setInterval(this.onTextTracksChanged, timeout);
  }
  onMediaDetaching(event, data) {
    const media = this.media;
    if (!media) {
      return;
    }
    const transferringMedia = !!data.transferMedia;
    self.clearInterval(this.subtitlePollingInterval);
    if (!this.useTextTrackPolling) {
      media.textTracks.removeEventListener("change", this.asyncPollTrackChange);
    }
    if (this.trackId > -1) {
      this.queuedDefaultTrack = this.trackId;
    }
    this.subtitleTrack = -1;
    this.media = null;
    if (transferringMedia) {
      return;
    }
    const textTracks = filterSubtitleTracks(media.textTracks);
    textTracks.forEach((track) => {
      clearCurrentCues(track);
    });
  }
  onManifestLoading() {
    this.tracks = [];
    this.groupIds = null;
    this.tracksInGroup = [];
    this.trackId = -1;
    this.currentTrack = null;
    this.selectDefaultTrack = true;
  }
  onManifestParsed(event, data) {
    this.tracks = data.subtitleTracks;
  }
  onSubtitleTrackLoaded(event, data) {
    const {
      id,
      groupId,
      details
    } = data;
    const trackInActiveGroup = this.tracksInGroup[id];
    if (!trackInActiveGroup || trackInActiveGroup.groupId !== groupId) {
      this.warn(`Subtitle track with id:${id} and group:${groupId} not found in active group ${trackInActiveGroup == null ? void 0 : trackInActiveGroup.groupId}`);
      return;
    }
    const curDetails = trackInActiveGroup.details;
    trackInActiveGroup.details = data.details;
    this.log(`Subtitle track ${id} "${trackInActiveGroup.name}" lang:${trackInActiveGroup.lang} group:${groupId} loaded [${details.startSN}-${details.endSN}]`);
    if (id === this.trackId) {
      this.playlistLoaded(id, data, curDetails);
    }
  }
  onLevelLoading(event, data) {
    this.switchLevel(data.level);
  }
  onLevelSwitching(event, data) {
    this.switchLevel(data.level);
  }
  switchLevel(levelIndex) {
    const levelInfo = this.hls.levels[levelIndex];
    if (!levelInfo) {
      return;
    }
    const subtitleGroups = levelInfo.subtitleGroups || null;
    const currentGroups = this.groupIds;
    let currentTrack = this.currentTrack;
    if (!subtitleGroups || (currentGroups == null ? void 0 : currentGroups.length) !== (subtitleGroups == null ? void 0 : subtitleGroups.length) || subtitleGroups != null && subtitleGroups.some((groupId) => (currentGroups == null ? void 0 : currentGroups.indexOf(groupId)) === -1)) {
      this.groupIds = subtitleGroups;
      this.trackId = -1;
      this.currentTrack = null;
      const subtitleTracks = this.tracks.filter((track) => !subtitleGroups || subtitleGroups.indexOf(track.groupId) !== -1);
      if (subtitleTracks.length) {
        if (this.selectDefaultTrack && !subtitleTracks.some((track) => track.default)) {
          this.selectDefaultTrack = false;
        }
        subtitleTracks.forEach((track, i) => {
          track.id = i;
        });
      } else if (!currentTrack && !this.tracksInGroup.length) {
        return;
      }
      this.tracksInGroup = subtitleTracks;
      const subtitlePreference = this.hls.config.subtitlePreference;
      if (!currentTrack && subtitlePreference) {
        this.selectDefaultTrack = false;
        const groupIndex = findMatchingOption(subtitlePreference, subtitleTracks);
        if (groupIndex > -1) {
          currentTrack = subtitleTracks[groupIndex];
        } else {
          const allIndex = findMatchingOption(subtitlePreference, this.tracks);
          currentTrack = this.tracks[allIndex];
        }
      }
      let trackId = this.findTrackId(currentTrack);
      if (trackId === -1 && currentTrack) {
        trackId = this.findTrackId(null);
      }
      const subtitleTracksUpdated = {
        subtitleTracks
      };
      this.log(`Updating subtitle tracks, ${subtitleTracks.length} track(s) found in "${subtitleGroups == null ? void 0 : subtitleGroups.join(",")}" group-id`);
      this.hls.trigger(Events.SUBTITLE_TRACKS_UPDATED, subtitleTracksUpdated);
      if (trackId !== -1 && this.trackId === -1) {
        this.setSubtitleTrack(trackId);
      }
    }
  }
  findTrackId(currentTrack) {
    const tracks = this.tracksInGroup;
    const selectDefault = this.selectDefaultTrack;
    for (let i = 0; i < tracks.length; i++) {
      const track = tracks[i];
      if (selectDefault && !track.default || !selectDefault && !currentTrack) {
        continue;
      }
      if (!currentTrack || matchesOption(track, currentTrack)) {
        return i;
      }
    }
    if (currentTrack) {
      for (let i = 0; i < tracks.length; i++) {
        const track = tracks[i];
        if (mediaAttributesIdentical(currentTrack.attrs, track.attrs, ["LANGUAGE", "ASSOC-LANGUAGE", "CHARACTERISTICS"])) {
          return i;
        }
      }
      for (let i = 0; i < tracks.length; i++) {
        const track = tracks[i];
        if (mediaAttributesIdentical(currentTrack.attrs, track.attrs, ["LANGUAGE"])) {
          return i;
        }
      }
    }
    return -1;
  }
  findTrackForTextTrack(textTrack) {
    if (textTrack) {
      const tracks = this.tracksInGroup;
      for (let i = 0; i < tracks.length; i++) {
        const track = tracks[i];
        if (subtitleTrackMatchesTextTrack(track, textTrack)) {
          return i;
        }
      }
    }
    return -1;
  }
  onError(event, data) {
    if (data.fatal || !data.context) {
      return;
    }
    if (data.context.type === PlaylistContextType.SUBTITLE_TRACK && data.context.id === this.trackId && (!this.groupIds || this.groupIds.indexOf(data.context.groupId) !== -1)) {
      this.checkRetry(data);
    }
  }
  get allSubtitleTracks() {
    return this.tracks;
  }
  get subtitleTracks() {
    return this.tracksInGroup;
  }
  get subtitleTrack() {
    return this.trackId;
  }
  set subtitleTrack(newId) {
    this.selectDefaultTrack = false;
    this.setSubtitleTrack(newId);
  }
  setSubtitleOption(subtitleOption) {
    this.hls.config.subtitlePreference = subtitleOption;
    if (subtitleOption) {
      if (subtitleOption.id === -1) {
        this.setSubtitleTrack(-1);
        return null;
      }
      const allSubtitleTracks = this.allSubtitleTracks;
      this.selectDefaultTrack = false;
      if (allSubtitleTracks.length) {
        const currentTrack = this.currentTrack;
        if (currentTrack && matchesOption(subtitleOption, currentTrack)) {
          return currentTrack;
        }
        const groupIndex = findMatchingOption(subtitleOption, this.tracksInGroup);
        if (groupIndex > -1) {
          const track = this.tracksInGroup[groupIndex];
          this.setSubtitleTrack(groupIndex);
          return track;
        } else if (currentTrack) {
          return null;
        } else {
          const allIndex = findMatchingOption(subtitleOption, allSubtitleTracks);
          if (allIndex > -1) {
            return allSubtitleTracks[allIndex];
          }
        }
      }
    }
    return null;
  }
  loadPlaylist(hlsUrlParameters) {
    super.loadPlaylist();
    if (this.shouldLoadPlaylist(this.currentTrack)) {
      this.scheduleLoading(this.currentTrack, hlsUrlParameters);
    }
  }
  loadingPlaylist(currentTrack, hlsUrlParameters) {
    super.loadingPlaylist(currentTrack, hlsUrlParameters);
    const id = currentTrack.id;
    const groupId = currentTrack.groupId;
    const url = this.getUrlWithDirectives(currentTrack.url, hlsUrlParameters);
    const details = currentTrack.details;
    const age = details == null ? void 0 : details.age;
    this.log(`Loading subtitle ${id} "${currentTrack.name}" lang:${currentTrack.lang} group:${groupId}${(hlsUrlParameters == null ? void 0 : hlsUrlParameters.msn) !== void 0 ? " at sn " + hlsUrlParameters.msn + " part " + hlsUrlParameters.part : ""}${age && details.live ? " age " + age.toFixed(1) + (details.type ? " " + details.type || "" : "") : ""} ${url}`);
    this.hls.trigger(Events.SUBTITLE_TRACK_LOADING, {
      url,
      id,
      groupId,
      deliveryDirectives: hlsUrlParameters || null,
      track: currentTrack
    });
  }
  toggleTrackModes() {
    const {
      media
    } = this;
    if (!media) {
      return;
    }
    const textTracks = filterSubtitleTracks(media.textTracks);
    const currentTrack = this.currentTrack;
    let nextTrack;
    if (currentTrack) {
      nextTrack = textTracks.filter((textTrack) => subtitleTrackMatchesTextTrack(currentTrack, textTrack))[0];
      if (!nextTrack) {
        this.warn(`Unable to find subtitle TextTrack with name "${currentTrack.name}" and language "${currentTrack.lang}"`);
      }
    }
    [].slice.call(textTracks).forEach((track) => {
      if (track.mode !== "disabled" && track !== nextTrack) {
        track.mode = "disabled";
      }
    });
    if (nextTrack) {
      const mode = this.subtitleDisplay ? "showing" : "hidden";
      if (nextTrack.mode !== mode) {
        nextTrack.mode = mode;
      }
    }
  }
  setSubtitleTrack(newId) {
    const tracks = this.tracksInGroup;
    if (!this.media) {
      this.queuedDefaultTrack = newId;
      return;
    }
    if (newId < -1 || newId >= tracks.length || !isFiniteNumber(newId)) {
      this.warn(`Invalid subtitle track id: ${newId}`);
      return;
    }
    this.selectDefaultTrack = false;
    const lastTrack = this.currentTrack;
    const track = tracks[newId] || null;
    this.trackId = newId;
    this.currentTrack = track;
    this.toggleTrackModes();
    if (!track) {
      this.hls.trigger(Events.SUBTITLE_TRACK_SWITCH, {
        id: newId
      });
      return;
    }
    const trackLoaded = !!track.details && !track.details.live;
    if (newId === this.trackId && track === lastTrack && trackLoaded) {
      return;
    }
    this.log(`Switching to subtitle-track ${newId}` + (track ? ` "${track.name}" lang:${track.lang} group:${track.groupId}` : ""));
    const {
      id,
      groupId = "",
      name,
      type,
      url
    } = track;
    this.hls.trigger(Events.SUBTITLE_TRACK_SWITCH, {
      id,
      groupId,
      name,
      type,
      url
    });
    const hlsUrlParameters = this.switchParams(track.url, lastTrack == null ? void 0 : lastTrack.details, track.details);
    this.loadPlaylist(hlsUrlParameters);
  }
};
function uuid() {
  try {
    return crypto.randomUUID();
  } catch (error) {
    try {
      const url = URL.createObjectURL(new Blob());
      const uuid2 = url.toString();
      URL.revokeObjectURL(url);
      return uuid2.slice(uuid2.lastIndexOf("/") + 1);
    } catch (error2) {
      let dt = new Date().getTime();
      const uuid2 = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
        const r = (dt + Math.random() * 16) % 16 | 0;
        dt = Math.floor(dt / 16);
        return (c == "x" ? r : r & 3 | 8).toString(16);
      });
      return uuid2;
    }
  }
}
function hash(text) {
  let hash2 = 5381;
  let i = text.length;
  while (i) {
    hash2 = hash2 * 33 ^ text.charCodeAt(--i);
  }
  return (hash2 >>> 0).toString();
}
var ALIGNED_END_THRESHOLD_SECONDS = 0.025;
var TimelineOccupancy = function(TimelineOccupancy2) {
  TimelineOccupancy2[TimelineOccupancy2["Point"] = 0] = "Point";
  TimelineOccupancy2[TimelineOccupancy2["Range"] = 1] = "Range";
  return TimelineOccupancy2;
}({});
function generateAssetIdentifier(interstitial, uri, assetListIndex) {
  return `${interstitial.identifier}-${assetListIndex + 1}-${hash(uri)}`;
}
var InterstitialEvent = class {
  constructor(dateRange, base) {
    this.base = void 0;
    this._duration = null;
    this._timelineStart = null;
    this.appendInPlaceDisabled = void 0;
    this.appendInPlaceStarted = void 0;
    this.dateRange = void 0;
    this.hasPlayed = false;
    this.cumulativeDuration = 0;
    this.resumeOffset = NaN;
    this.playoutLimit = NaN;
    this.restrictions = {
      skip: false,
      jump: false
    };
    this.snapOptions = {
      out: false,
      in: false
    };
    this.assetList = [];
    this.assetListLoader = void 0;
    this.assetListResponse = null;
    this.resumeAnchor = void 0;
    this.error = void 0;
    this.resetOnResume = void 0;
    this.base = base;
    this.dateRange = dateRange;
    this.setDateRange(dateRange);
  }
  setDateRange(dateRange) {
    this.dateRange = dateRange;
    this.resumeOffset = dateRange.attr.optionalFloat("X-RESUME-OFFSET", this.resumeOffset);
    this.playoutLimit = dateRange.attr.optionalFloat("X-PLAYOUT-LIMIT", this.playoutLimit);
    this.restrictions = dateRange.attr.enumeratedStringList("X-RESTRICT", this.restrictions);
    this.snapOptions = dateRange.attr.enumeratedStringList("X-SNAP", this.snapOptions);
  }
  reset() {
    var _this$assetListLoader;
    this.appendInPlaceStarted = false;
    (_this$assetListLoader = this.assetListLoader) == null ? void 0 : _this$assetListLoader.destroy();
    this.assetListLoader = void 0;
    if (!this.supplementsPrimary) {
      this.assetListResponse = null;
      this.assetList = [];
      this._duration = null;
    }
  }
  isAssetPastPlayoutLimit(assetIndex) {
    var _this$assetList$asset;
    if (assetIndex > 0 && assetIndex >= this.assetList.length) {
      return true;
    }
    const playoutLimit = this.playoutLimit;
    if (assetIndex <= 0 || isNaN(playoutLimit)) {
      return false;
    }
    if (playoutLimit === 0) {
      return true;
    }
    const assetOffset = ((_this$assetList$asset = this.assetList[assetIndex]) == null ? void 0 : _this$assetList$asset.startOffset) || 0;
    return assetOffset > playoutLimit;
  }
  findAssetIndex(asset) {
    const index = this.assetList.indexOf(asset);
    return index;
  }
  get identifier() {
    return this.dateRange.id;
  }
  get startDate() {
    return this.dateRange.startDate;
  }
  get startTime() {
    const startTime = this.dateRange.startTime;
    if (this.snapOptions.out) {
      const frag = this.dateRange.tagAnchor;
      if (frag) {
        return getSnapToFragmentTime(startTime, frag);
      }
    }
    return startTime;
  }
  get startOffset() {
    return this.cue.pre ? 0 : this.startTime;
  }
  get startIsAligned() {
    if (this.startTime === 0 || this.snapOptions.out) {
      return true;
    }
    const frag = this.dateRange.tagAnchor;
    if (frag) {
      const startTime = this.dateRange.startTime;
      const snappedStart = getSnapToFragmentTime(startTime, frag);
      return startTime - snappedStart < 0.1;
    }
    return false;
  }
  get resumptionOffset() {
    const resumeOffset = this.resumeOffset;
    const offset = isFiniteNumber(resumeOffset) ? resumeOffset : this.duration;
    return this.cumulativeDuration + offset;
  }
  get resumeTime() {
    const resumeTime = this.startOffset + this.resumptionOffset;
    if (this.snapOptions.in) {
      const frag = this.resumeAnchor;
      if (frag) {
        return getSnapToFragmentTime(resumeTime, frag);
      }
    }
    return resumeTime;
  }
  get appendInPlace() {
    if (this.appendInPlaceStarted) {
      return true;
    }
    if (this.appendInPlaceDisabled) {
      return false;
    }
    if (!this.cue.once && !this.cue.pre && this.startIsAligned && (isNaN(this.playoutLimit) && isNaN(this.resumeOffset) || this.resumeOffset && this.duration && Math.abs(this.resumeOffset - this.duration) < ALIGNED_END_THRESHOLD_SECONDS)) {
      return true;
    }
    return false;
  }
  set appendInPlace(value) {
    if (this.appendInPlaceStarted) {
      this.resetOnResume = !value;
      return;
    }
    this.appendInPlaceDisabled = !value;
  }
  get timelineStart() {
    if (this._timelineStart !== null) {
      return this._timelineStart;
    }
    return this.startTime;
  }
  set timelineStart(value) {
    this._timelineStart = value;
  }
  get duration() {
    const playoutLimit = this.playoutLimit;
    let duration;
    if (this._duration !== null) {
      duration = this._duration;
    } else if (this.dateRange.duration) {
      duration = this.dateRange.duration;
    } else {
      duration = this.dateRange.plannedDuration || 0;
    }
    if (!isNaN(playoutLimit) && playoutLimit < duration) {
      duration = playoutLimit;
    }
    return duration;
  }
  set duration(value) {
    this._duration = value;
  }
  get cue() {
    return this.dateRange.cue;
  }
  get timelineOccupancy() {
    if (this.dateRange.attr["X-TIMELINE-OCCUPIES"] === "RANGE") {
      return TimelineOccupancy.Range;
    }
    return TimelineOccupancy.Point;
  }
  get supplementsPrimary() {
    return this.dateRange.attr["X-TIMELINE-STYLE"] === "PRIMARY";
  }
  get contentMayVary() {
    return this.dateRange.attr["X-CONTENT-MAY-VARY"] !== "NO";
  }
  get assetUrl() {
    return this.dateRange.attr["X-ASSET-URI"];
  }
  get assetListUrl() {
    return this.dateRange.attr["X-ASSET-LIST"];
  }
  get baseUrl() {
    return this.base.url;
  }
  get assetListLoaded() {
    return this.assetList.length > 0 || this.assetListResponse !== null;
  }
  toString() {
    return eventToString(this);
  }
};
function getSnapToFragmentTime(time, frag) {
  return time - frag.start < frag.duration / 2 && !(Math.abs(time - (frag.start + frag.duration)) < ALIGNED_END_THRESHOLD_SECONDS) ? frag.start : frag.start + frag.duration;
}
function getInterstitialUrl(uri, sessionId, baseUrl) {
  const url = new self.URL(uri, baseUrl);
  if (url.protocol !== "data:") {
    url.searchParams.set("_HLS_primary_id", sessionId);
  }
  return url;
}
function getNextAssetIndex(interstitial, assetListIndex) {
  while ((_interstitial$assetLi = interstitial.assetList[++assetListIndex]) != null && _interstitial$assetLi.error) {
    var _interstitial$assetLi;
  }
  return assetListIndex;
}
function eventToString(interstitial) {
  return `["${interstitial.identifier}" ${interstitial.cue.pre ? "<pre>" : interstitial.cue.post ? "<post>" : ""}${interstitial.timelineStart.toFixed(2)}-${interstitial.resumeTime.toFixed(2)}]`;
}
function eventAssetToString(asset) {
  const start = asset.timelineStart;
  const duration = asset.duration || 0;
  return `["${asset.identifier}" ${start.toFixed(2)}-${(start + duration).toFixed(2)}]`;
}
var HlsAssetPlayer = class {
  constructor(HlsPlayerClass, userConfig, interstitial, assetItem) {
    this.hls = void 0;
    this.interstitial = void 0;
    this.assetItem = void 0;
    this.tracks = null;
    this.hasDetails = false;
    this.mediaAttached = null;
    this._currentTime = void 0;
    this._bufferedEosTime = void 0;
    this.checkPlayout = () => {
      if (this.reachedPlayout(this.currentTime)) {
        this.hls.trigger(Events.PLAYOUT_LIMIT_REACHED, {});
      }
    };
    const hls = this.hls = new HlsPlayerClass(userConfig);
    this.interstitial = interstitial;
    this.assetItem = assetItem;
    let uri = assetItem.uri;
    try {
      uri = getInterstitialUrl(uri, userConfig.primarySessionId).href;
    } catch (error) {
    }
    hls.loadSource(uri);
    const detailsLoaded = () => {
      this.hasDetails = true;
    };
    hls.once(Events.LEVEL_LOADED, detailsLoaded);
    hls.once(Events.AUDIO_TRACK_LOADED, detailsLoaded);
    hls.once(Events.SUBTITLE_TRACK_LOADED, detailsLoaded);
    hls.on(Events.MEDIA_ATTACHING, (name, {
      media
    }) => {
      this.removeMediaListeners();
      this.mediaAttached = media;
      const event = this.interstitial;
      if (event.playoutLimit) {
        media.addEventListener("timeupdate", this.checkPlayout);
        if (this.appendInPlace) {
          hls.on(Events.BUFFER_APPENDED, () => {
            const bufferedEnd = this.bufferedEnd;
            if (this.reachedPlayout(bufferedEnd)) {
              this._bufferedEosTime = bufferedEnd;
              hls.trigger(Events.BUFFERED_TO_END, void 0);
            }
          });
        }
      }
    });
  }
  get appendInPlace() {
    var _this$interstitial;
    return ((_this$interstitial = this.interstitial) == null ? void 0 : _this$interstitial.appendInPlace) || false;
  }
  bufferedInPlaceToEnd(media) {
    var _this$hls;
    if (!this.appendInPlace) {
      return false;
    }
    if ((_this$hls = this.hls) != null && _this$hls.bufferedToEnd) {
      return true;
    }
    if (!media || !this._bufferedEosTime) {
      return false;
    }
    const start = this.timelineOffset;
    const bufferInfo = BufferHelper.bufferInfo(media, start, 0);
    const bufferedEnd = this.getAssetTime(bufferInfo.end);
    return bufferedEnd >= this._bufferedEosTime - 0.02;
  }
  reachedPlayout(time) {
    const interstitial = this.interstitial;
    const playoutLimit = interstitial.playoutLimit;
    return this.startOffset + time >= playoutLimit;
  }
  get destroyed() {
    var _this$hls2;
    return !((_this$hls2 = this.hls) != null && _this$hls2.userConfig);
  }
  get assetId() {
    return this.assetItem.identifier;
  }
  get interstitialId() {
    return this.assetItem.parentIdentifier;
  }
  get media() {
    var _this$hls3;
    return ((_this$hls3 = this.hls) == null ? void 0 : _this$hls3.media) || null;
  }
  get bufferedEnd() {
    const media = this.media || this.mediaAttached;
    if (!media) {
      if (this._bufferedEosTime) {
        return this._bufferedEosTime;
      }
      return this.currentTime;
    }
    const bufferInfo = BufferHelper.bufferInfo(media, media.currentTime, 1e-3);
    return this.getAssetTime(bufferInfo.end);
  }
  get currentTime() {
    const media = this.media || this.mediaAttached;
    if (!media) {
      return this._currentTime || 0;
    }
    return this.getAssetTime(media.currentTime);
  }
  get duration() {
    const duration = this.assetItem.duration;
    if (!duration) {
      return 0;
    }
    return duration;
  }
  get remaining() {
    const duration = this.duration;
    if (!duration) {
      return 0;
    }
    return Math.max(0, duration - this.currentTime);
  }
  get startOffset() {
    return this.assetItem.startOffset;
  }
  get timelineOffset() {
    var _this$hls4;
    return ((_this$hls4 = this.hls) == null ? void 0 : _this$hls4.config.timelineOffset) || 0;
  }
  set timelineOffset(value) {
    const timelineOffset = this.timelineOffset;
    if (value !== timelineOffset) {
      const diff = value - timelineOffset;
      if (Math.abs(diff) > 1 / 9e4) {
        if (this.hasDetails) {
          throw new Error(`Cannot set timelineOffset after playlists are loaded`);
        }
        this.hls.config.timelineOffset = value;
      }
    }
  }
  getAssetTime(time) {
    const timelineOffset = this.timelineOffset;
    const duration = this.duration;
    return Math.min(Math.max(0, time - timelineOffset), duration);
  }
  removeMediaListeners() {
    const media = this.mediaAttached;
    if (media) {
      this._currentTime = media.currentTime;
      this.bufferSnapShot();
      media.removeEventListener("timeupdate", this.checkPlayout);
    }
  }
  bufferSnapShot() {
    if (this.mediaAttached) {
      var _this$hls5;
      if ((_this$hls5 = this.hls) != null && _this$hls5.bufferedToEnd) {
        this._bufferedEosTime = this.bufferedEnd;
      }
    }
  }
  destroy() {
    this.removeMediaListeners();
    this.hls.destroy();
    this.hls = this.interstitial = null;
    this.tracks = this.mediaAttached = this.checkPlayout = null;
  }
  attachMedia(data) {
    this.hls.attachMedia(data);
  }
  detachMedia() {
    this.removeMediaListeners();
    this.mediaAttached = null;
    this.hls.detachMedia();
  }
  resumeBuffering() {
    this.hls.resumeBuffering();
  }
  pauseBuffering() {
    this.hls.pauseBuffering();
  }
  transferMedia() {
    this.bufferSnapShot();
    return this.hls.transferMedia();
  }
  resetDetails() {
    const hls = this.hls;
    if (this.hasDetails) {
      hls.stopLoad();
      const deleteDetails = (obj) => delete obj.details;
      hls.levels.forEach(deleteDetails);
      hls.allAudioTracks.forEach(deleteDetails);
      hls.allSubtitleTracks.forEach(deleteDetails);
      this.hasDetails = false;
    }
  }
  on(event, listener, context) {
    this.hls.on(event, listener);
  }
  once(event, listener, context) {
    this.hls.once(event, listener);
  }
  off(event, listener, context) {
    this.hls.off(event, listener);
  }
  toString() {
    var _this$hls6;
    return `HlsAssetPlayer: ${eventAssetToString(this.assetItem)} ${(_this$hls6 = this.hls) == null ? void 0 : _this$hls6.sessionId} ${this.appendInPlace ? "append-in-place" : ""}`;
  }
};
var ABUTTING_THRESHOLD_SECONDS = 0.033;
var InterstitialsSchedule = class extends Logger {
  constructor(onScheduleUpdate, logger2) {
    super("interstitials-sched", logger2);
    this.onScheduleUpdate = void 0;
    this.eventMap = {};
    this.events = null;
    this.items = null;
    this.durations = {
      primary: 0,
      playout: 0,
      integrated: 0
    };
    this.onScheduleUpdate = onScheduleUpdate;
  }
  destroy() {
    this.reset();
    this.onScheduleUpdate = null;
  }
  reset() {
    this.eventMap = {};
    this.setDurations(0, 0, 0);
    if (this.events) {
      this.events.forEach((interstitial) => interstitial.reset());
    }
    this.events = this.items = null;
  }
  resetErrorsInRange(start, end) {
    if (this.events) {
      return this.events.reduce((count, interstitial) => {
        if (start <= interstitial.startOffset && end > interstitial.startOffset) {
          delete interstitial.error;
          return count + 1;
        }
        return count;
      }, 0);
    }
    return 0;
  }
  get duration() {
    const items = this.items;
    return items ? items[items.length - 1].end : 0;
  }
  get length() {
    return this.items ? this.items.length : 0;
  }
  getEvent(identifier) {
    return identifier ? this.eventMap[identifier] || null : null;
  }
  hasEvent(identifier) {
    return identifier in this.eventMap;
  }
  findItemIndex(item, time) {
    if (item.event) {
      return this.findEventIndex(item.event.identifier);
    }
    let index = -1;
    if (item.nextEvent) {
      index = this.findEventIndex(item.nextEvent.identifier) - 1;
    } else if (item.previousEvent) {
      index = this.findEventIndex(item.previousEvent.identifier) + 1;
    }
    const items = this.items;
    if (items) {
      if (!items[index]) {
        if (time === void 0) {
          time = item.start;
        }
        index = this.findItemIndexAtTime(time);
      }
      while (index >= 0 && (_items$index = items[index]) != null && _items$index.event) {
        var _items$index;
        index--;
      }
    }
    return index;
  }
  findItemIndexAtTime(timelinePos, timelineType) {
    const items = this.items;
    if (items) {
      for (let i = 0; i < items.length; i++) {
        let timeRange = items[i];
        if (timelineType && timelineType !== "primary") {
          timeRange = timeRange[timelineType];
        }
        if (timelinePos === timeRange.start || timelinePos > timeRange.start && timelinePos < timeRange.end) {
          return i;
        }
      }
    }
    return -1;
  }
  findJumpRestrictedIndex(startIndex, endIndex) {
    const items = this.items;
    if (items) {
      for (let i = startIndex; i <= endIndex; i++) {
        if (!items[i]) {
          break;
        }
        const event = items[i].event;
        if (event != null && event.restrictions.jump && !event.appendInPlace) {
          return i;
        }
      }
    }
    return -1;
  }
  findEventIndex(identifier) {
    const items = this.items;
    if (items) {
      for (let i = items.length; i--; ) {
        var _items$i$event;
        if (((_items$i$event = items[i].event) == null ? void 0 : _items$i$event.identifier) === identifier) {
          return i;
        }
      }
    }
    return -1;
  }
  findAssetIndex(event, timelinePos) {
    const assetList = event.assetList;
    const length = assetList.length;
    if (length > 1) {
      for (let i = 0; i < length; i++) {
        const asset = assetList[i];
        if (!asset.error) {
          const timelineStart = asset.timelineStart;
          if (timelinePos === timelineStart || timelinePos > timelineStart && timelinePos < timelineStart + (asset.duration || 0)) {
            return i;
          }
        }
      }
    }
    return 0;
  }
  get assetIdAtEnd() {
    var _this$items, _this$items2;
    const interstitialAtEnd = (_this$items = this.items) == null ? void 0 : (_this$items2 = _this$items[this.length - 1]) == null ? void 0 : _this$items2.event;
    if (interstitialAtEnd) {
      const assetList = interstitialAtEnd.assetList;
      const assetAtEnd = assetList[assetList.length - 1];
      if (assetAtEnd) {
        return assetAtEnd.identifier;
      }
    }
    return null;
  }
  parseInterstitialDateRanges(mediaSelection, enableAppendInPlace) {
    const details = mediaSelection.main.details;
    const {
      dateRanges
    } = details;
    const previousInterstitialEvents = this.events;
    const interstitialEvents = this.parseDateRanges(dateRanges, {
      url: details.url
    }, enableAppendInPlace);
    const ids = Object.keys(dateRanges);
    const removedInterstitials = previousInterstitialEvents ? previousInterstitialEvents.filter((event) => !ids.includes(event.identifier)) : [];
    if (interstitialEvents.length) {
      interstitialEvents.sort((a, b) => {
        const aPre = a.cue.pre;
        const aPost = a.cue.post;
        const bPre = b.cue.pre;
        const bPost = b.cue.post;
        if (aPre && !bPre) {
          return -1;
        }
        if (bPre && !aPre) {
          return 1;
        }
        if (aPost && !bPost) {
          return 1;
        }
        if (bPost && !aPost) {
          return -1;
        }
        if (!aPre && !bPre && !aPost && !bPost) {
          const startA = a.startTime;
          const startB = b.startTime;
          if (startA !== startB) {
            return startA - startB;
          }
        }
        return a.dateRange.tagOrder - b.dateRange.tagOrder;
      });
    }
    this.events = interstitialEvents;
    removedInterstitials.forEach((interstitial) => {
      this.removeEvent(interstitial);
    });
    this.updateSchedule(mediaSelection, removedInterstitials);
  }
  updateSchedule(mediaSelection, removedInterstitials = []) {
    const events = this.events || [];
    if (events.length || removedInterstitials.length || this.length < 2) {
      const currentItems = this.items;
      const updatedItems = this.parseSchedule(events, mediaSelection);
      const updated = removedInterstitials.length || (currentItems == null ? void 0 : currentItems.length) !== updatedItems.length || updatedItems.some((item, i) => {
        return Math.abs(item.playout.start - currentItems[i].playout.start) > 5e-3 || Math.abs(item.playout.end - currentItems[i].playout.end) > 5e-3;
      });
      if (updated) {
        this.items = updatedItems;
        this.onScheduleUpdate(removedInterstitials, currentItems);
      }
    }
  }
  parseDateRanges(dateRanges, baseData, enableAppendInPlace) {
    const interstitialEvents = [];
    const ids = Object.keys(dateRanges);
    for (let i = 0; i < ids.length; i++) {
      const id = ids[i];
      const dateRange = dateRanges[id];
      if (dateRange.isInterstitial) {
        let interstitial = this.eventMap[id];
        if (interstitial) {
          interstitial.setDateRange(dateRange);
        } else {
          interstitial = new InterstitialEvent(dateRange, baseData);
          this.eventMap[id] = interstitial;
          if (enableAppendInPlace === false) {
            interstitial.appendInPlace = enableAppendInPlace;
          }
        }
        interstitialEvents.push(interstitial);
      }
    }
    return interstitialEvents;
  }
  parseSchedule(interstitialEvents, mediaSelection) {
    const schedule = [];
    const details = mediaSelection.main.details;
    const primaryDuration = details.live ? Infinity : details.edge;
    let playoutDuration = 0;
    interstitialEvents = interstitialEvents.filter((event) => !event.error && !(event.cue.once && event.hasPlayed));
    if (interstitialEvents.length) {
      this.resolveOffsets(interstitialEvents, mediaSelection);
      let primaryPosition = 0;
      let integratedTime = 0;
      interstitialEvents.forEach((interstitial, i) => {
        const preroll = interstitial.cue.pre;
        const postroll = interstitial.cue.post;
        const previousEvent = interstitialEvents[i - 1] || null;
        const appendInPlace = interstitial.appendInPlace;
        const eventStart = postroll ? primaryDuration : interstitial.startOffset;
        const interstitialDuration = interstitial.duration;
        const timelineDuration = interstitial.timelineOccupancy === TimelineOccupancy.Range ? interstitialDuration : 0;
        const resumptionOffset = interstitial.resumptionOffset;
        const inSameStartTimeSequence = (previousEvent == null ? void 0 : previousEvent.startTime) === eventStart;
        const start = eventStart + interstitial.cumulativeDuration;
        let end = appendInPlace ? start + interstitialDuration : eventStart + resumptionOffset;
        if (preroll || !postroll && eventStart <= 0) {
          const integratedStart = integratedTime;
          integratedTime += timelineDuration;
          interstitial.timelineStart = start;
          const playoutStart = playoutDuration;
          playoutDuration += interstitialDuration;
          schedule.push({
            event: interstitial,
            start,
            end,
            playout: {
              start: playoutStart,
              end: playoutDuration
            },
            integrated: {
              start: integratedStart,
              end: integratedTime
            }
          });
        } else if (eventStart <= primaryDuration) {
          if (!inSameStartTimeSequence) {
            const segmentDuration = eventStart - primaryPosition;
            if (segmentDuration > ABUTTING_THRESHOLD_SECONDS) {
              const timelineStart = primaryPosition;
              const _integratedStart = integratedTime;
              integratedTime += segmentDuration;
              const _playoutStart = playoutDuration;
              playoutDuration += segmentDuration;
              const primarySegment = {
                previousEvent: interstitialEvents[i - 1] || null,
                nextEvent: interstitial,
                start: timelineStart,
                end: timelineStart + segmentDuration,
                playout: {
                  start: _playoutStart,
                  end: playoutDuration
                },
                integrated: {
                  start: _integratedStart,
                  end: integratedTime
                }
              };
              schedule.push(primarySegment);
            } else if (segmentDuration > 0 && previousEvent) {
              previousEvent.cumulativeDuration += segmentDuration;
              schedule[schedule.length - 1].end = eventStart;
            }
          }
          if (postroll) {
            end = start;
          }
          interstitial.timelineStart = start;
          const integratedStart = integratedTime;
          integratedTime += timelineDuration;
          const playoutStart = playoutDuration;
          playoutDuration += interstitialDuration;
          schedule.push({
            event: interstitial,
            start,
            end,
            playout: {
              start: playoutStart,
              end: playoutDuration
            },
            integrated: {
              start: integratedStart,
              end: integratedTime
            }
          });
        } else {
          return;
        }
        const resumeTime = interstitial.resumeTime;
        if (postroll || resumeTime > primaryDuration) {
          primaryPosition = primaryDuration;
        } else {
          primaryPosition = resumeTime;
        }
      });
      if (primaryPosition < primaryDuration) {
        var _schedule;
        const timelineStart = primaryPosition;
        const integratedStart = integratedTime;
        const segmentDuration = primaryDuration - primaryPosition;
        integratedTime += segmentDuration;
        const playoutStart = playoutDuration;
        playoutDuration += segmentDuration;
        schedule.push({
          previousEvent: ((_schedule = schedule[schedule.length - 1]) == null ? void 0 : _schedule.event) || null,
          nextEvent: null,
          start: primaryPosition,
          end: timelineStart + segmentDuration,
          playout: {
            start: playoutStart,
            end: playoutDuration
          },
          integrated: {
            start: integratedStart,
            end: integratedTime
          }
        });
      }
      this.setDurations(primaryDuration, playoutDuration, integratedTime);
    } else {
      const start = 0;
      schedule.push({
        previousEvent: null,
        nextEvent: null,
        start,
        end: primaryDuration,
        playout: {
          start,
          end: primaryDuration
        },
        integrated: {
          start,
          end: primaryDuration
        }
      });
      this.setDurations(primaryDuration, primaryDuration, primaryDuration);
    }
    return schedule;
  }
  setDurations(primary, playout, integrated) {
    this.durations = {
      primary,
      playout,
      integrated
    };
  }
  resolveOffsets(interstitialEvents, mediaSelection) {
    const details = mediaSelection.main.details;
    const primaryDuration = details.live ? Infinity : details.edge;
    let cumulativeDuration = 0;
    let lastScheduledStart = -1;
    interstitialEvents.forEach((interstitial, i) => {
      const preroll = interstitial.cue.pre;
      const postroll = interstitial.cue.post;
      const eventStart = preroll ? 0 : postroll ? primaryDuration : interstitial.startTime;
      this.updateAssetDurations(interstitial);
      const inSameStartTimeSequence = lastScheduledStart === eventStart;
      if (inSameStartTimeSequence) {
        interstitial.cumulativeDuration = cumulativeDuration;
      } else {
        cumulativeDuration = 0;
        lastScheduledStart = eventStart;
      }
      if (!postroll && interstitial.snapOptions.in) {
        interstitial.resumeAnchor = findFragmentByPTS(null, details.fragments, interstitial.startOffset + interstitial.resumptionOffset, 0, 0) || void 0;
      }
      if (interstitial.appendInPlace && !interstitial.appendInPlaceStarted) {
        const alignedSegmentStart = this.primaryCanResumeInPlaceAt(interstitial, mediaSelection);
        if (!alignedSegmentStart) {
          interstitial.appendInPlace = false;
        }
      }
      if (!interstitial.appendInPlace && i + 1 < interstitialEvents.length) {
        const timeBetween = interstitialEvents[i + 1].startTime - interstitialEvents[i].resumeTime;
        if (timeBetween < ABUTTING_THRESHOLD_SECONDS) {
          interstitialEvents[i + 1].appendInPlace = false;
          if (interstitialEvents[i + 1].appendInPlace) {
            this.warn(`Could not change append strategy for abutting event ${interstitial}`);
          }
        }
      }
      const resumeOffset = isFiniteNumber(interstitial.resumeOffset) ? interstitial.resumeOffset : interstitial.duration;
      cumulativeDuration += resumeOffset;
    });
  }
  primaryCanResumeInPlaceAt(interstitial, mediaSelection) {
    const resumeTime = interstitial.resumeTime;
    const resumesInPlaceAt = interstitial.startTime + interstitial.resumptionOffset;
    if (Math.abs(resumeTime - resumesInPlaceAt) > ALIGNED_END_THRESHOLD_SECONDS) {
      this.log(`"${interstitial.identifier}" resumption ${resumeTime} not aligned with estimated timeline end ${resumesInPlaceAt}`);
      return false;
    }
    if (!mediaSelection) {
      this.log(`"${interstitial.identifier}" resumption ${resumeTime} can not be aligned with media (none selected)`);
      return false;
    }
    const playlists = Object.keys(mediaSelection);
    return !playlists.some((playlistType) => {
      const details = mediaSelection[playlistType].details;
      const playlistEnd = details.edge;
      if (resumeTime >= playlistEnd) {
        this.log(`"${interstitial.identifier}" resumption ${resumeTime} past ${playlistType} playlist end ${playlistEnd}`);
        return false;
      }
      const startFragment = findFragmentByPTS(null, details.fragments, resumeTime);
      if (!startFragment) {
        this.log(`"${interstitial.identifier}" resumption ${resumeTime} does not align with any fragments in ${playlistType} playlist (${details.fragStart}-${details.fragmentEnd})`);
        return true;
      }
      const allowance = playlistType === "audio" ? 0.175 : 0;
      const alignedWithSegment = Math.abs(startFragment.start - resumeTime) < ALIGNED_END_THRESHOLD_SECONDS + allowance || Math.abs(startFragment.end - resumeTime) < ALIGNED_END_THRESHOLD_SECONDS + allowance;
      if (!alignedWithSegment) {
        this.log(`"${interstitial.identifier}" resumption ${resumeTime} not aligned with ${playlistType} fragment bounds (${startFragment.start}-${startFragment.end} sn: ${startFragment.sn} cc: ${startFragment.cc})`);
        return true;
      }
      return false;
    });
  }
  updateAssetDurations(interstitial) {
    if (!interstitial.assetListLoaded) {
      return;
    }
    const eventStart = interstitial.timelineStart;
    let sumDuration = 0;
    let hasUnknownDuration = false;
    let hasErrors = false;
    interstitial.assetList.forEach((asset, i) => {
      const timelineStart = eventStart + sumDuration;
      asset.startOffset = sumDuration;
      asset.timelineStart = timelineStart;
      hasUnknownDuration || (hasUnknownDuration = asset.duration === null);
      hasErrors || (hasErrors = !!asset.error);
      const duration = asset.error ? 0 : asset.duration || 0;
      sumDuration += duration;
    });
    if (hasUnknownDuration && !hasErrors) {
      interstitial.duration = Math.max(sumDuration, interstitial.duration);
    } else {
      interstitial.duration = sumDuration;
    }
  }
  removeEvent(interstitial) {
    interstitial.reset();
    delete this.eventMap[interstitial.identifier];
  }
};
function segmentToString(segment) {
  return `[${segment.event ? '"' + segment.event.identifier + '"' : "primary"}: ${segment.start.toFixed(2)}-${segment.end.toFixed(2)}]`;
}
var AssetListLoader = class {
  constructor(hls) {
    this.hls = void 0;
    this.hls = hls;
  }
  destroy() {
    this.hls = null;
  }
  loadAssetList(interstitial, hlsStartOffset) {
    const assetListUrl = interstitial.assetListUrl;
    let url;
    try {
      url = getInterstitialUrl(assetListUrl, this.hls.sessionId, interstitial.baseUrl);
    } catch (error) {
      const errorData = this.assignAssetListError(interstitial, ErrorDetails.ASSET_LIST_LOAD_ERROR, error, assetListUrl);
      this.hls.trigger(Events.ERROR, errorData);
      return;
    }
    if (hlsStartOffset && url.protocol !== "data:") {
      url.searchParams.set("_HLS_start_offset", "" + hlsStartOffset);
    }
    const config = this.hls.config;
    const Loader = config.loader;
    const loader = new Loader(config);
    const context = {
      responseType: "json",
      url: url.href
    };
    const loadPolicy = config.interstitialAssetListLoadPolicy.default;
    const loaderConfig = {
      loadPolicy,
      timeout: loadPolicy.maxLoadTimeMs,
      maxRetry: 0,
      retryDelay: 0,
      maxRetryDelay: 0
    };
    const callbacks = {
      onSuccess: (response, stats, context2, networkDetails) => {
        const assetListResponse = response.data;
        const assets = assetListResponse == null ? void 0 : assetListResponse.ASSETS;
        if (!Array.isArray(assets)) {
          const errorData = this.assignAssetListError(interstitial, ErrorDetails.ASSET_LIST_PARSING_ERROR, new Error(`Invalid interstitial asset list`), context2.url, stats, networkDetails);
          this.hls.trigger(Events.ERROR, errorData);
          return;
        }
        interstitial.assetListResponse = assetListResponse;
        this.hls.trigger(Events.ASSET_LIST_LOADED, {
          event: interstitial,
          assetListResponse,
          networkDetails
        });
      },
      onError: (error, context2, networkDetails, stats) => {
        const errorData = this.assignAssetListError(interstitial, ErrorDetails.ASSET_LIST_LOAD_ERROR, new Error(`Error loading X-ASSET-LIST: HTTP status ${error.code} ${error.text} (${context2.url})`), context2.url, stats, networkDetails);
        this.hls.trigger(Events.ERROR, errorData);
      },
      onTimeout: (stats, context2, networkDetails) => {
        const errorData = this.assignAssetListError(interstitial, ErrorDetails.ASSET_LIST_LOAD_TIMEOUT, new Error(`Timeout loading X-ASSET-LIST (${context2.url})`), context2.url, stats, networkDetails);
        this.hls.trigger(Events.ERROR, errorData);
      }
    };
    loader.load(context, loaderConfig, callbacks);
    this.hls.trigger(Events.ASSET_LIST_LOADING, {
      event: interstitial
    });
    return loader;
  }
  assignAssetListError(interstitial, details, error, url, stats, networkDetails) {
    interstitial.error = error;
    return {
      type: ErrorTypes.NETWORK_ERROR,
      details,
      fatal: false,
      interstitial,
      url,
      error,
      networkDetails,
      stats
    };
  }
};
function playWithCatch(media) {
  media == null ? void 0 : media.play().catch(() => {
  });
}
var InterstitialsController = class extends Logger {
  constructor(hls, HlsPlayerClass) {
    super("interstitials", hls.logger);
    this.HlsPlayerClass = void 0;
    this.hls = void 0;
    this.assetListLoader = void 0;
    this.mediaSelection = null;
    this.altSelection = null;
    this.media = null;
    this.detachedData = null;
    this.requiredTracks = null;
    this.manager = null;
    this.playerQueue = [];
    this.bufferedPos = -1;
    this.timelinePos = -1;
    this.schedule = void 0;
    this.playingItem = null;
    this.bufferingItem = null;
    this.waitingItem = null;
    this.endedItem = null;
    this.playingAsset = null;
    this.endedAsset = null;
    this.bufferingAsset = null;
    this.shouldPlay = false;
    this.onPlay = () => {
      this.shouldPlay = true;
    };
    this.onPause = () => {
      this.shouldPlay = false;
    };
    this.onSeeking = () => {
      const currentTime = this.currentTime;
      if (currentTime === void 0 || this.playbackDisabled) {
        return;
      }
      const diff = currentTime - this.timelinePos;
      const roundingError = Math.abs(diff) < 1 / 7056e5;
      if (roundingError) {
        return;
      }
      const backwardSeek = diff <= -0.01;
      this.timelinePos = currentTime;
      this.bufferedPos = currentTime;
      const playingItem = this.playingItem;
      if (!playingItem) {
        this.checkBuffer();
        return;
      }
      if (backwardSeek) {
        const resetCount = this.schedule.resetErrorsInRange(currentTime, currentTime - diff);
        if (resetCount) {
          this.updateSchedule();
        }
      }
      this.checkBuffer();
      if (backwardSeek && currentTime < playingItem.start || currentTime >= playingItem.end) {
        var _this$media;
        const scheduleIndex = this.schedule.findItemIndexAtTime(this.timelinePos);
        if (!this.isInterstitial(playingItem) && (_this$media = this.media) != null && _this$media.paused) {
          this.shouldPlay = false;
        }
        if (!backwardSeek) {
          const playingIndex = this.findItemIndex(playingItem);
          if (scheduleIndex > playingIndex) {
            const jumpIndex = this.schedule.findJumpRestrictedIndex(playingIndex + 1, scheduleIndex);
            if (jumpIndex > playingIndex) {
              this.setSchedulePosition(jumpIndex);
              return;
            }
          }
        }
        this.setSchedulePosition(scheduleIndex);
        return;
      }
      const playingAsset = this.playingAsset;
      if (!playingAsset) {
        if (this.playingLastItem && this.isInterstitial(playingItem)) {
          const restartAsset = playingItem.event.assetList[0];
          if (restartAsset) {
            this.endedItem = this.playingItem;
            this.playingItem = null;
            this.setScheduleToAssetAtTime(currentTime, restartAsset);
          }
        }
        return;
      }
      const start = playingAsset.timelineStart;
      const duration = playingAsset.duration || 0;
      if (backwardSeek && currentTime < start || currentTime >= start + duration) {
        this.setScheduleToAssetAtTime(currentTime, playingAsset);
      }
    };
    this.onTimeupdate = () => {
      const currentTime = this.currentTime;
      if (currentTime === void 0 || this.playbackDisabled) {
        return;
      }
      if (currentTime > this.timelinePos) {
        this.timelinePos = currentTime;
        if (currentTime > this.bufferedPos) {
          this.checkBuffer();
        }
      } else {
        return;
      }
      const playingItem = this.playingItem;
      if (!playingItem || this.playingLastItem) {
        return;
      }
      if (currentTime >= playingItem.end) {
        this.timelinePos = playingItem.end;
        const playingIndex = this.findItemIndex(playingItem);
        this.setSchedulePosition(playingIndex + 1);
      }
      const playingAsset = this.playingAsset;
      if (!playingAsset) {
        return;
      }
      const end = playingAsset.timelineStart + (playingAsset.duration || 0);
      if (currentTime >= end) {
        this.setScheduleToAssetAtTime(currentTime, playingAsset);
      }
    };
    this.onScheduleUpdate = (removedInterstitials, previousItems) => {
      const schedule = this.schedule;
      const playingItem = this.playingItem;
      const interstitialEvents = schedule.events || [];
      const scheduleItems = schedule.items || [];
      const durations = schedule.durations;
      const removedIds = removedInterstitials.map((interstitial) => interstitial.identifier);
      const interstitialsUpdated = !!(interstitialEvents.length || removedIds.length);
      if (interstitialsUpdated || previousItems) {
        this.log(`INTERSTITIALS_UPDATED (${interstitialEvents.length}): ${interstitialEvents}
Schedule: ${scheduleItems.map((seg) => segmentToString(seg))} pos: ${this.timelinePos}`);
      }
      if (removedIds.length) {
        this.log(`Removed events ${removedIds}`);
      }
      this.playerQueue.forEach((player) => {
        if (player.interstitial.appendInPlace) {
          const timelineStart = player.assetItem.timelineStart;
          const diff = player.timelineOffset - timelineStart;
          if (diff) {
            try {
              player.timelineOffset = timelineStart;
            } catch (e) {
              if (Math.abs(diff) > ALIGNED_END_THRESHOLD_SECONDS) {
                this.warn(`${e} ("${player.assetId}" ${player.timelineOffset}->${timelineStart})`);
              }
            }
          }
        }
      });
      let trimInPlaceForPlayout = null;
      if (playingItem) {
        const updatedPlayingItem = this.updateItem(playingItem, this.timelinePos);
        if (this.itemsMatch(playingItem, updatedPlayingItem)) {
          this.playingItem = updatedPlayingItem;
          this.waitingItem = this.endedItem = null;
          trimInPlaceForPlayout = () => this.trimInPlace(updatedPlayingItem, playingItem);
        }
      } else {
        this.waitingItem = this.updateItem(this.waitingItem);
        this.endedItem = this.updateItem(this.endedItem);
      }
      const bufferingItem = this.bufferingItem;
      if (bufferingItem) {
        const updatedBufferingItem = this.updateItem(bufferingItem, this.bufferedPos);
        if (this.itemsMatch(bufferingItem, updatedBufferingItem)) {
          this.bufferingItem = updatedBufferingItem;
          trimInPlaceForPlayout || (trimInPlaceForPlayout = () => this.trimInPlace(updatedBufferingItem, bufferingItem));
        } else if (bufferingItem.event) {
          this.bufferingItem = this.playingItem;
          this.clearInterstitial(bufferingItem.event, null);
        }
      }
      removedInterstitials.forEach((interstitial) => {
        interstitial.assetList.forEach((asset) => {
          this.clearAssetPlayer(asset.identifier, null);
        });
      });
      if (interstitialsUpdated || previousItems) {
        this.hls.trigger(Events.INTERSTITIALS_UPDATED, {
          events: interstitialEvents.slice(0),
          schedule: scheduleItems.slice(0),
          durations,
          removedIds
        });
        if (this.isInterstitial(playingItem) && removedIds.includes(playingItem.event.identifier)) {
          this.warn(`Interstitial "${playingItem.event.identifier}" removed while playing`);
          this.primaryFallback(playingItem.event);
          return;
        }
        if (trimInPlaceForPlayout) {
          trimInPlaceForPlayout();
        }
        this.checkBuffer();
      }
    };
    this.hls = hls;
    this.HlsPlayerClass = HlsPlayerClass;
    this.assetListLoader = new AssetListLoader(hls);
    this.schedule = new InterstitialsSchedule(this.onScheduleUpdate, hls.logger);
    this.registerListeners();
  }
  registerListeners() {
    const hls = this.hls;
    hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.on(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.on(Events.AUDIO_TRACK_UPDATED, this.onAudioTrackUpdated, this);
    hls.on(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
    hls.on(Events.SUBTITLE_TRACK_UPDATED, this.onSubtitleTrackUpdated, this);
    hls.on(Events.EVENT_CUE_ENTER, this.onInterstitialCueEnter, this);
    hls.on(Events.ASSET_LIST_LOADED, this.onAssetListLoaded, this);
    hls.on(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    hls.on(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.on(Events.BUFFERED_TO_END, this.onBufferedToEnd, this);
    hls.on(Events.MEDIA_ENDED, this.onMediaEnded, this);
    hls.on(Events.ERROR, this.onError, this);
    hls.on(Events.DESTROYING, this.onDestroying, this);
  }
  unregisterListeners() {
    const hls = this.hls;
    if (!hls) {
      return;
    }
    hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.off(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.off(Events.AUDIO_TRACK_UPDATED, this.onAudioTrackUpdated, this);
    hls.off(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
    hls.off(Events.SUBTITLE_TRACK_UPDATED, this.onSubtitleTrackUpdated, this);
    hls.off(Events.EVENT_CUE_ENTER, this.onInterstitialCueEnter, this);
    hls.off(Events.ASSET_LIST_LOADED, this.onAssetListLoaded, this);
    hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    hls.off(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    hls.off(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.off(Events.BUFFERED_TO_END, this.onBufferedToEnd, this);
    hls.off(Events.MEDIA_ENDED, this.onMediaEnded, this);
    hls.off(Events.ERROR, this.onError, this);
    hls.off(Events.DESTROYING, this.onDestroying, this);
  }
  startLoad() {
    this.resumeBuffering();
  }
  stopLoad() {
    this.pauseBuffering();
  }
  resumeBuffering() {
    var _this$getBufferingPla;
    (_this$getBufferingPla = this.getBufferingPlayer()) == null ? void 0 : _this$getBufferingPla.resumeBuffering();
  }
  pauseBuffering() {
    var _this$getBufferingPla2;
    (_this$getBufferingPla2 = this.getBufferingPlayer()) == null ? void 0 : _this$getBufferingPla2.pauseBuffering();
  }
  destroy() {
    this.unregisterListeners();
    this.stopLoad();
    if (this.assetListLoader) {
      this.assetListLoader.destroy();
    }
    this.emptyPlayerQueue();
    this.clearScheduleState();
    if (this.schedule) {
      this.schedule.destroy();
    }
    this.media = this.detachedData = this.mediaSelection = this.requiredTracks = this.altSelection = this.manager = null;
    this.hls = this.HlsPlayerClass = this.schedule = this.log = null;
    this.assetListLoader = null;
    this.onPlay = this.onPause = this.onSeeking = this.onTimeupdate = null;
    this.onScheduleUpdate = null;
  }
  onDestroying() {
    const media = this.primaryMedia || this.media;
    if (media) {
      this.removeMediaListeners(media);
    }
  }
  removeMediaListeners(media) {
    removeEventListener(media, "play", this.onPlay);
    removeEventListener(media, "pause", this.onPause);
    removeEventListener(media, "seeking", this.onSeeking);
    removeEventListener(media, "timeupdate", this.onTimeupdate);
  }
  onMediaAttaching(event, data) {
    const media = this.media = data.media;
    addEventListener(media, "seeking", this.onSeeking);
    addEventListener(media, "timeupdate", this.onTimeupdate);
    addEventListener(media, "play", this.onPlay);
    addEventListener(media, "pause", this.onPause);
  }
  onMediaAttached(event, data) {
    const playingItem = this.effectivePlayingItem;
    const detachedMedia = this.detachedData;
    this.detachedData = null;
    if (playingItem === null) {
      this.checkStart();
    } else if (!detachedMedia) {
      this.clearScheduleState();
      const playingIndex = this.findItemIndex(playingItem);
      this.setSchedulePosition(playingIndex);
    }
  }
  clearScheduleState() {
    this.playingItem = this.bufferingItem = this.waitingItem = this.endedItem = this.playingAsset = this.endedAsset = this.bufferingAsset = null;
  }
  onMediaDetaching(event, data) {
    const transferringMedia = !!data.transferMedia;
    const media = this.media;
    this.media = null;
    if (transferringMedia) {
      return;
    }
    if (media) {
      this.removeMediaListeners(media);
    }
    if (this.detachedData) {
      const player = this.getBufferingPlayer();
      if (player) {
        this.playingAsset = this.endedAsset = this.bufferingAsset = this.bufferingItem = this.waitingItem = this.detachedData = null;
        player.detachMedia();
      }
      this.shouldPlay = false;
    }
  }
  get interstitialsManager() {
    if (!this.manager) {
      if (!this.hls) {
        return null;
      }
      const c = this;
      const effectiveBufferingItem = () => c.bufferingItem || c.waitingItem;
      const getAssetPlayer = (asset) => asset ? c.getAssetPlayer(asset.identifier) : asset;
      const getMappedTime = (item, timelineType, asset, controllerField, assetPlayerField) => {
        if (item) {
          let time = item[timelineType].start;
          const interstitial = item.event;
          if (interstitial) {
            if (timelineType === "playout" || interstitial.timelineOccupancy !== TimelineOccupancy.Point) {
              const assetPlayer = getAssetPlayer(asset);
              if ((assetPlayer == null ? void 0 : assetPlayer.interstitial) === interstitial) {
                time += assetPlayer.assetItem.startOffset + assetPlayer[assetPlayerField];
              }
            }
          } else {
            const value = controllerField === "bufferedPos" ? getBufferedEnd() : c[controllerField];
            time += value - item.start;
          }
          return time;
        }
        return 0;
      };
      const findMappedTime = (primaryTime, timelineType) => {
        if (primaryTime !== 0 && timelineType !== "primary" && c.schedule.length) {
          var _c$schedule$items;
          const index = c.schedule.findItemIndexAtTime(primaryTime);
          const item = (_c$schedule$items = c.schedule.items) == null ? void 0 : _c$schedule$items[index];
          if (item) {
            const diff = item[timelineType].start - item.start;
            return primaryTime + diff;
          }
        }
        return primaryTime;
      };
      const getBufferedEnd = () => {
        const value = c.bufferedPos;
        if (value === Number.MAX_VALUE) {
          return getMappedDuration("primary");
        }
        return Math.max(value, 0);
      };
      const getMappedDuration = (timelineType) => {
        var _c$primaryDetails;
        if ((_c$primaryDetails = c.primaryDetails) != null && _c$primaryDetails.live) {
          return c.primaryDetails.edge;
        }
        return c.schedule.durations[timelineType];
      };
      const seekTo = (time, timelineType) => {
        var _item$event, _c$schedule$items2;
        const item = c.effectivePlayingItem;
        if (item != null && (_item$event = item.event) != null && _item$event.restrictions.skip) {
          return;
        }
        c.log(`seek to ${time} "${timelineType}"`);
        const playingItem = c.effectivePlayingItem;
        const targetIndex = c.schedule.findItemIndexAtTime(time, timelineType);
        const targetItem = (_c$schedule$items2 = c.schedule.items) == null ? void 0 : _c$schedule$items2[targetIndex];
        const bufferingPlayer = c.getBufferingPlayer();
        const bufferingInterstitial = bufferingPlayer == null ? void 0 : bufferingPlayer.interstitial;
        const appendInPlace = bufferingInterstitial == null ? void 0 : bufferingInterstitial.appendInPlace;
        const seekInItem = playingItem && c.itemsMatch(playingItem, targetItem);
        if (playingItem && (appendInPlace || seekInItem)) {
          const assetPlayer = getAssetPlayer(c.playingAsset);
          const media = (assetPlayer == null ? void 0 : assetPlayer.media) || c.primaryMedia;
          if (media) {
            const currentTime = timelineType === "primary" ? media.currentTime : getMappedTime(playingItem, timelineType, c.playingAsset, "timelinePos", "currentTime");
            const diff = time - currentTime;
            const seekToTime = (appendInPlace ? currentTime : media.currentTime) + diff;
            if (seekToTime >= 0 && (!assetPlayer || appendInPlace || seekToTime <= assetPlayer.duration)) {
              media.currentTime = seekToTime;
              return;
            }
          }
        }
        if (targetItem) {
          let seekToTime = time;
          if (timelineType !== "primary") {
            const primarySegmentStart = targetItem[timelineType].start;
            const diff = time - primarySegmentStart;
            seekToTime = targetItem.start + diff;
          }
          const targetIsPrimary = !c.isInterstitial(targetItem);
          if ((!c.isInterstitial(playingItem) || playingItem.event.appendInPlace) && (targetIsPrimary || targetItem.event.appendInPlace)) {
            const media = c.media || (appendInPlace ? bufferingPlayer == null ? void 0 : bufferingPlayer.media : null);
            if (media) {
              media.currentTime = seekToTime;
            }
          } else if (playingItem) {
            const playingIndex = c.findItemIndex(playingItem);
            if (targetIndex > playingIndex) {
              const jumpIndex = c.schedule.findJumpRestrictedIndex(playingIndex + 1, targetIndex);
              if (jumpIndex > playingIndex) {
                c.setSchedulePosition(jumpIndex);
                return;
              }
            }
            let assetIndex = 0;
            if (targetIsPrimary) {
              c.timelinePos = seekToTime;
              c.checkBuffer();
            } else {
              var _targetItem$event;
              const assetList = targetItem == null ? void 0 : (_targetItem$event = targetItem.event) == null ? void 0 : _targetItem$event.assetList;
              if (assetList) {
                const eventTime = time - (targetItem[timelineType] || targetItem).start;
                for (let i = assetList.length; i--; ) {
                  const asset = assetList[i];
                  if (asset.duration && eventTime >= asset.startOffset && eventTime < asset.startOffset + asset.duration) {
                    assetIndex = i;
                    break;
                  }
                }
              }
            }
            c.setSchedulePosition(targetIndex, assetIndex);
          }
        }
      };
      const getActiveInterstitial = () => {
        const playingItem = c.effectivePlayingItem;
        if (c.isInterstitial(playingItem)) {
          return playingItem;
        }
        const bufferingItem = effectiveBufferingItem();
        if (c.isInterstitial(bufferingItem)) {
          return bufferingItem;
        }
        return null;
      };
      const interstitialPlayer = {
        get currentTime() {
          const interstitialItem = getActiveInterstitial();
          const playingItem = c.effectivePlayingItem;
          if (playingItem && playingItem === interstitialItem) {
            return getMappedTime(playingItem, "playout", c.effectivePlayingAsset, "timelinePos", "currentTime") - playingItem.playout.start;
          }
          return 0;
        },
        set currentTime(time) {
          const interstitialItem = getActiveInterstitial();
          const playingItem = c.effectivePlayingItem;
          if (playingItem && playingItem === interstitialItem) {
            seekTo(time + playingItem.playout.start, "playout");
          }
        },
        get duration() {
          const interstitialItem = getActiveInterstitial();
          if (interstitialItem) {
            return interstitialItem.playout.end - interstitialItem.playout.start;
          }
          return 0;
        },
        get assetPlayers() {
          var _getActiveInterstitia;
          const assetList = (_getActiveInterstitia = getActiveInterstitial()) == null ? void 0 : _getActiveInterstitia.event.assetList;
          if (assetList) {
            return assetList.map((asset) => c.getAssetPlayer(asset.identifier));
          }
          return [];
        },
        get playingIndex() {
          var _getActiveInterstitia2;
          const interstitial = (_getActiveInterstitia2 = getActiveInterstitial()) == null ? void 0 : _getActiveInterstitia2.event;
          if (interstitial && c.effectivePlayingAsset) {
            return interstitial.findAssetIndex(c.effectivePlayingAsset);
          }
          return -1;
        },
        get scheduleItem() {
          return getActiveInterstitial();
        }
      };
      this.manager = {
        get events() {
          var _c$schedule, _c$schedule$events;
          return ((_c$schedule = c.schedule) == null ? void 0 : (_c$schedule$events = _c$schedule.events) == null ? void 0 : _c$schedule$events.slice(0)) || [];
        },
        get schedule() {
          var _c$schedule2, _c$schedule2$items;
          return ((_c$schedule2 = c.schedule) == null ? void 0 : (_c$schedule2$items = _c$schedule2.items) == null ? void 0 : _c$schedule2$items.slice(0)) || [];
        },
        get interstitialPlayer() {
          if (getActiveInterstitial()) {
            return interstitialPlayer;
          }
          return null;
        },
        get playerQueue() {
          return c.playerQueue.slice(0);
        },
        get bufferingAsset() {
          return c.bufferingAsset;
        },
        get bufferingItem() {
          return effectiveBufferingItem();
        },
        get bufferingIndex() {
          const item = effectiveBufferingItem();
          return c.findItemIndex(item);
        },
        get playingAsset() {
          return c.effectivePlayingAsset;
        },
        get playingItem() {
          return c.effectivePlayingItem;
        },
        get playingIndex() {
          const item = c.effectivePlayingItem;
          return c.findItemIndex(item);
        },
        primary: {
          get bufferedEnd() {
            return getBufferedEnd();
          },
          get currentTime() {
            const timelinePos = c.timelinePos;
            return timelinePos > 0 ? timelinePos : 0;
          },
          set currentTime(time) {
            seekTo(time, "primary");
          },
          get duration() {
            return getMappedDuration("primary");
          },
          get seekableStart() {
            var _c$primaryDetails2;
            return ((_c$primaryDetails2 = c.primaryDetails) == null ? void 0 : _c$primaryDetails2.fragmentStart) || 0;
          }
        },
        integrated: {
          get bufferedEnd() {
            return getMappedTime(effectiveBufferingItem(), "integrated", c.bufferingAsset, "bufferedPos", "bufferedEnd");
          },
          get currentTime() {
            return getMappedTime(c.effectivePlayingItem, "integrated", c.effectivePlayingAsset, "timelinePos", "currentTime");
          },
          set currentTime(time) {
            seekTo(time, "integrated");
          },
          get duration() {
            return getMappedDuration("integrated");
          },
          get seekableStart() {
            var _c$primaryDetails3;
            return findMappedTime(((_c$primaryDetails3 = c.primaryDetails) == null ? void 0 : _c$primaryDetails3.fragmentStart) || 0, "integrated");
          }
        },
        skip: () => {
          const item = c.effectivePlayingItem;
          const event = item == null ? void 0 : item.event;
          if (event && !event.restrictions.skip) {
            const index = c.findItemIndex(item);
            if (event.appendInPlace) {
              const time = item.playout.start + item.event.duration;
              seekTo(time + 1e-3, "playout");
            } else {
              c.advanceAfterAssetEnded(event, index, Infinity);
            }
          }
        }
      };
    }
    return this.manager;
  }
  get effectivePlayingItem() {
    return this.waitingItem || this.playingItem || this.endedItem;
  }
  get effectivePlayingAsset() {
    return this.playingAsset || this.endedAsset;
  }
  get playingLastItem() {
    var _this$schedule;
    const playingItem = this.playingItem;
    const items = (_this$schedule = this.schedule) == null ? void 0 : _this$schedule.items;
    if (!this.playbackStarted || !playingItem || !items) {
      return false;
    }
    return this.findItemIndex(playingItem) === items.length - 1;
  }
  get playbackStarted() {
    return this.effectivePlayingItem !== null;
  }
  get currentTime() {
    var _this$bufferingItem, _this$bufferingItem$e, _media;
    if (this.mediaSelection === null) {
      return void 0;
    }
    const queuedForPlayback = this.waitingItem || this.playingItem;
    if (this.isInterstitial(queuedForPlayback) && !queuedForPlayback.event.appendInPlace) {
      return void 0;
    }
    let media = this.media;
    if (!media && (_this$bufferingItem = this.bufferingItem) != null && (_this$bufferingItem$e = _this$bufferingItem.event) != null && _this$bufferingItem$e.appendInPlace) {
      media = this.primaryMedia;
    }
    const currentTime = (_media = media) == null ? void 0 : _media.currentTime;
    if (currentTime === void 0 || !isFiniteNumber(currentTime)) {
      return void 0;
    }
    return currentTime;
  }
  get primaryMedia() {
    var _this$detachedData;
    return this.media || ((_this$detachedData = this.detachedData) == null ? void 0 : _this$detachedData.media) || null;
  }
  isInterstitial(item) {
    return !!(item != null && item.event);
  }
  retreiveMediaSource(assetId, toSegment) {
    const player = this.getAssetPlayer(assetId);
    if (player) {
      this.transferMediaFromPlayer(player, toSegment);
    }
  }
  transferMediaFromPlayer(player, toSegment) {
    const appendInPlace = player.interstitial.appendInPlace;
    const playerMedia = player.media;
    if (appendInPlace && playerMedia === this.primaryMedia) {
      this.bufferingAsset = null;
      if (!toSegment || this.isInterstitial(toSegment) && !toSegment.event.appendInPlace) {
        if (toSegment && playerMedia) {
          this.detachedData = {
            media: playerMedia
          };
          return;
        }
      }
      const attachMediaSourceData = player.transferMedia();
      this.log(`transfer MediaSource from ${player} ${stringify(attachMediaSourceData)}`);
      this.detachedData = attachMediaSourceData;
    } else if (toSegment && playerMedia) {
      this.shouldPlay || (this.shouldPlay = !playerMedia.paused);
    }
  }
  transferMediaTo(player, media) {
    var _this$detachedData2, _attachMediaSourceDat;
    if (player.media === media) {
      return;
    }
    let attachMediaSourceData = null;
    const primaryPlayer = this.hls;
    const isAssetPlayer = player !== primaryPlayer;
    const appendInPlace = isAssetPlayer && player.interstitial.appendInPlace;
    const detachedMediaSource = (_this$detachedData2 = this.detachedData) == null ? void 0 : _this$detachedData2.mediaSource;
    let logFromSource;
    if (primaryPlayer.media) {
      if (appendInPlace) {
        attachMediaSourceData = primaryPlayer.transferMedia();
        this.detachedData = attachMediaSourceData;
      }
      logFromSource = `Primary`;
    } else if (detachedMediaSource) {
      const bufferingPlayer = this.getBufferingPlayer();
      if (bufferingPlayer) {
        attachMediaSourceData = bufferingPlayer.transferMedia();
        logFromSource = `${bufferingPlayer}`;
      } else {
        logFromSource = `detached MediaSource`;
      }
    } else {
      logFromSource = `detached media`;
    }
    if (!attachMediaSourceData) {
      if (detachedMediaSource) {
        attachMediaSourceData = this.detachedData;
        this.log(`using detachedData: MediaSource ${stringify(attachMediaSourceData)}`);
      } else if (!this.detachedData || primaryPlayer.media === media) {
        const playerQueue = this.playerQueue;
        if (playerQueue.length > 1) {
          playerQueue.forEach((queuedPlayer) => {
            if (isAssetPlayer && queuedPlayer.interstitial.appendInPlace !== appendInPlace) {
              const interstitial = queuedPlayer.interstitial;
              this.clearInterstitial(queuedPlayer.interstitial, null);
              interstitial.appendInPlace = false;
              if (interstitial.appendInPlace) {
                this.warn(`Could not change append strategy for queued assets ${interstitial}`);
              }
            }
          });
        }
        this.hls.detachMedia();
        this.detachedData = {
          media
        };
      }
    }
    const transferring = attachMediaSourceData && "mediaSource" in attachMediaSourceData && ((_attachMediaSourceDat = attachMediaSourceData.mediaSource) == null ? void 0 : _attachMediaSourceDat.readyState) !== "closed";
    const dataToAttach = transferring && attachMediaSourceData ? attachMediaSourceData : media;
    this.log(`${transferring ? "transfering MediaSource" : "attaching media"} to ${isAssetPlayer ? player : "Primary"} from ${logFromSource}`);
    if (dataToAttach === attachMediaSourceData) {
      const isAssetAtEndOfSchedule = isAssetPlayer && player.assetId === this.schedule.assetIdAtEnd;
      dataToAttach.overrides = {
        duration: this.schedule.duration,
        endOfStream: !isAssetPlayer || isAssetAtEndOfSchedule,
        cueRemoval: !isAssetPlayer
      };
    }
    player.attachMedia(dataToAttach);
  }
  onInterstitialCueEnter() {
    this.onTimeupdate();
  }
  checkStart() {
    const schedule = this.schedule;
    const interstitialEvents = schedule.events;
    if (!interstitialEvents || this.playbackDisabled || !this.media) {
      return;
    }
    if (this.bufferedPos === -1) {
      this.bufferedPos = 0;
    }
    const timelinePos = this.timelinePos;
    const effectivePlayingItem = this.effectivePlayingItem;
    if (timelinePos === -1) {
      const startPosition = this.hls.startPosition;
      this.timelinePos = startPosition;
      if (interstitialEvents.length && interstitialEvents[0].cue.pre) {
        const index = schedule.findEventIndex(interstitialEvents[0].identifier);
        this.setSchedulePosition(index);
      } else if (startPosition >= 0 || !this.primaryLive) {
        const start = this.timelinePos = startPosition > 0 ? startPosition : 0;
        const index = schedule.findItemIndexAtTime(start);
        this.setSchedulePosition(index);
      }
    } else if (effectivePlayingItem && !this.playingItem) {
      const index = schedule.findItemIndex(effectivePlayingItem);
      this.setSchedulePosition(index);
    }
  }
  advanceAfterAssetEnded(interstitial, index, assetListIndex) {
    const nextAssetIndex = getNextAssetIndex(interstitial, assetListIndex);
    if (!interstitial.isAssetPastPlayoutLimit(nextAssetIndex)) {
      this.setSchedulePosition(index, nextAssetIndex);
    } else {
      const scheduleItems = this.schedule.items;
      if (scheduleItems) {
        const nextIndex = index + 1;
        const scheduleLength = scheduleItems.length;
        if (nextIndex >= scheduleLength) {
          this.setSchedulePosition(-1);
          return;
        }
        const resumptionTime = interstitial.resumeTime;
        if (this.timelinePos < resumptionTime) {
          this.timelinePos = resumptionTime;
          this.checkBuffer();
        }
        this.setSchedulePosition(nextIndex);
      }
    }
  }
  setScheduleToAssetAtTime(time, playingAsset) {
    const schedule = this.schedule;
    const parentIdentifier = playingAsset.parentIdentifier;
    const interstitial = schedule.getEvent(parentIdentifier);
    if (interstitial) {
      const itemIndex = schedule.findEventIndex(parentIdentifier);
      const assetListIndex = schedule.findAssetIndex(interstitial, time);
      this.advanceAfterAssetEnded(interstitial, itemIndex, assetListIndex - 1);
    }
  }
  setSchedulePosition(index, assetListIndex) {
    const scheduleItems = this.schedule.items;
    if (!scheduleItems || this.playbackDisabled) {
      return;
    }
    this.log(`setSchedulePosition ${index}, ${assetListIndex}`);
    const scheduledItem = index >= 0 ? scheduleItems[index] : null;
    const currentItem = this.playingItem;
    const playingLastItem = this.playingLastItem;
    if (this.isInterstitial(currentItem)) {
      var _interstitial$assetLi;
      const interstitial = currentItem.event;
      const playingAsset = this.playingAsset;
      const assetId = playingAsset == null ? void 0 : playingAsset.identifier;
      const player = assetId ? this.getAssetPlayer(assetId) : null;
      if (player && assetId && (!this.eventItemsMatch(currentItem, scheduledItem) || assetListIndex !== void 0 && assetId !== ((_interstitial$assetLi = interstitial.assetList) == null ? void 0 : _interstitial$assetLi[assetListIndex].identifier))) {
        var _this$detachedData3;
        const playingAssetListIndex = interstitial.findAssetIndex(playingAsset);
        this.log(`INTERSTITIAL_ASSET_ENDED ${playingAssetListIndex + 1}/${interstitial.assetList.length} ${eventAssetToString(playingAsset)}`);
        this.endedAsset = playingAsset;
        this.playingAsset = null;
        this.hls.trigger(Events.INTERSTITIAL_ASSET_ENDED, {
          asset: playingAsset,
          assetListIndex: playingAssetListIndex,
          event: interstitial,
          schedule: scheduleItems.slice(0),
          scheduleIndex: index,
          player
        });
        if (currentItem !== this.playingItem) {
          if (this.itemsMatch(currentItem, this.playingItem) && !this.playingAsset) {
            this.advanceAfterAssetEnded(interstitial, this.findItemIndex(this.playingItem), playingAssetListIndex);
          }
          return;
        }
        this.retreiveMediaSource(assetId, scheduledItem);
        if (player.media && !((_this$detachedData3 = this.detachedData) != null && _this$detachedData3.mediaSource)) {
          player.detachMedia();
        }
      }
      if (!this.eventItemsMatch(currentItem, scheduledItem)) {
        this.endedItem = currentItem;
        this.playingItem = null;
        this.log(`INTERSTITIAL_ENDED ${interstitial} ${segmentToString(currentItem)}`);
        interstitial.hasPlayed = true;
        this.hls.trigger(Events.INTERSTITIAL_ENDED, {
          event: interstitial,
          schedule: scheduleItems.slice(0),
          scheduleIndex: index
        });
        if (interstitial.cue.once) {
          this.updateSchedule();
          const items = this.schedule.items;
          if (scheduledItem && items) {
            const updatedIndex = this.findItemIndex(scheduledItem);
            this.advanceSchedule(updatedIndex, items, assetListIndex, currentItem, playingLastItem);
          }
          return;
        }
      }
    }
    this.advanceSchedule(index, scheduleItems, assetListIndex, currentItem, playingLastItem);
  }
  advanceSchedule(index, scheduleItems, assetListIndex, currentItem, playedLastItem) {
    const scheduledItem = index >= 0 ? scheduleItems[index] : null;
    const media = this.primaryMedia;
    const playerQueue = this.playerQueue;
    if (playerQueue.length) {
      playerQueue.forEach((player) => {
        const interstitial = player.interstitial;
        const queuedIndex = this.schedule.findEventIndex(interstitial.identifier);
        if (queuedIndex < index || queuedIndex > index + 1) {
          this.clearInterstitial(interstitial, scheduledItem);
        }
      });
    }
    if (this.isInterstitial(scheduledItem)) {
      this.timelinePos = Math.min(Math.max(this.timelinePos, scheduledItem.start), scheduledItem.end);
      const interstitial = scheduledItem.event;
      if (assetListIndex === void 0) {
        assetListIndex = this.schedule.findAssetIndex(interstitial, this.timelinePos);
        const assetIndexCandidate = getNextAssetIndex(interstitial, assetListIndex - 1);
        if (interstitial.isAssetPastPlayoutLimit(assetIndexCandidate)) {
          this.advanceAfterAssetEnded(interstitial, index, assetListIndex);
          return;
        }
        assetListIndex = assetIndexCandidate;
      }
      const waitingItem = this.waitingItem;
      if (!this.assetsBuffered(scheduledItem, media)) {
        this.setBufferingItem(scheduledItem);
      }
      let player = this.preloadAssets(interstitial, assetListIndex);
      if (!this.eventItemsMatch(scheduledItem, waitingItem || currentItem)) {
        this.waitingItem = scheduledItem;
        this.log(`INTERSTITIAL_STARTED ${segmentToString(scheduledItem)} ${interstitial.appendInPlace ? "append in place" : ""}`);
        this.hls.trigger(Events.INTERSTITIAL_STARTED, {
          event: interstitial,
          schedule: scheduleItems.slice(0),
          scheduleIndex: index
        });
      }
      if (!interstitial.assetListLoaded) {
        this.log(`Waiting for ASSET-LIST to complete loading ${interstitial}`);
        return;
      }
      if (interstitial.assetListLoader) {
        interstitial.assetListLoader.destroy();
        interstitial.assetListLoader = void 0;
      }
      if (!media) {
        this.log(`Waiting for attachMedia to start Interstitial ${interstitial}`);
        return;
      }
      this.waitingItem = this.endedItem = null;
      this.playingItem = scheduledItem;
      const assetItem = interstitial.assetList[assetListIndex];
      if (!assetItem) {
        const nextItem = scheduleItems[index + 1];
        const _media2 = this.media;
        if (nextItem && _media2 && !this.isInterstitial(nextItem) && _media2.currentTime < nextItem.start) {
          _media2.currentTime = this.timelinePos = nextItem.start;
        }
        this.advanceAfterAssetEnded(interstitial, index, assetListIndex || 0);
        return;
      }
      if (!player) {
        player = this.getAssetPlayer(assetItem.identifier);
      }
      if (player === null || player.destroyed) {
        const assetListLength = interstitial.assetList.length;
        this.warn(`asset ${assetListIndex + 1}/${assetListLength} player destroyed ${interstitial}`);
        player = this.createAssetPlayer(interstitial, assetItem, assetListIndex);
      }
      if (!this.eventItemsMatch(scheduledItem, this.bufferingItem)) {
        if (interstitial.appendInPlace && this.isAssetBuffered(assetItem)) {
          return;
        }
      }
      this.startAssetPlayer(player, assetListIndex, scheduleItems, index, media);
      if (this.shouldPlay) {
        playWithCatch(player.media);
      }
    } else if (scheduledItem !== null) {
      this.resumePrimary(scheduledItem, index, currentItem);
      if (this.shouldPlay) {
        playWithCatch(this.hls.media);
      }
    } else if (playedLastItem && this.isInterstitial(currentItem)) {
      this.endedItem = null;
      this.playingItem = currentItem;
      if (!currentItem.event.appendInPlace) {
        this.attachPrimary(this.schedule.durations.primary, null);
      }
    }
  }
  get playbackDisabled() {
    return this.hls.config.enableInterstitialPlayback === false;
  }
  get primaryDetails() {
    var _this$mediaSelection, _this$mediaSelection$;
    return (_this$mediaSelection = this.mediaSelection) == null ? void 0 : (_this$mediaSelection$ = _this$mediaSelection.main) == null ? void 0 : _this$mediaSelection$.details;
  }
  get primaryLive() {
    var _this$primaryDetails;
    return !!((_this$primaryDetails = this.primaryDetails) != null && _this$primaryDetails.live);
  }
  resumePrimary(scheduledItem, index, fromItem) {
    var _this$detachedData4;
    this.playingItem = scheduledItem;
    this.playingAsset = this.endedAsset = null;
    this.waitingItem = this.endedItem = null;
    this.bufferedToItem(scheduledItem);
    this.log(`resuming ${segmentToString(scheduledItem)}`);
    if (!((_this$detachedData4 = this.detachedData) != null && _this$detachedData4.mediaSource)) {
      let timelinePos = this.timelinePos;
      if (timelinePos < scheduledItem.start || timelinePos >= scheduledItem.end) {
        timelinePos = this.getPrimaryResumption(scheduledItem, index);
        this.timelinePos = timelinePos;
      }
      this.attachPrimary(timelinePos, scheduledItem);
    }
    if (!fromItem) {
      return;
    }
    const scheduleItems = this.schedule.items;
    if (!scheduleItems) {
      return;
    }
    this.log(`INTERSTITIALS_PRIMARY_RESUMED ${segmentToString(scheduledItem)}`);
    this.hls.trigger(Events.INTERSTITIALS_PRIMARY_RESUMED, {
      schedule: scheduleItems.slice(0),
      scheduleIndex: index
    });
    this.checkBuffer();
  }
  getPrimaryResumption(scheduledItem, index) {
    const itemStart = scheduledItem.start;
    if (this.primaryLive) {
      const details = this.primaryDetails;
      if (index === 0) {
        return this.hls.startPosition;
      } else if (details && (itemStart < details.fragmentStart || itemStart > details.edge)) {
        return this.hls.liveSyncPosition || -1;
      }
    }
    return itemStart;
  }
  isAssetBuffered(asset) {
    const player = this.getAssetPlayer(asset.identifier);
    if (player != null && player.hls) {
      return player.hls.bufferedToEnd;
    }
    const bufferInfo = BufferHelper.bufferInfo(this.primaryMedia, this.timelinePos, 0);
    return bufferInfo.end + 1 >= asset.timelineStart + (asset.duration || 0);
  }
  attachPrimary(timelinePos, item, skipSeekToStartPosition) {
    if (item) {
      this.setBufferingItem(item);
    } else {
      this.bufferingItem = this.playingItem;
    }
    this.bufferingAsset = null;
    const media = this.primaryMedia;
    if (!media) {
      return;
    }
    const hls = this.hls;
    if (hls.media) {
      this.checkBuffer();
    } else {
      this.transferMediaTo(hls, media);
      if (skipSeekToStartPosition) {
        this.startLoadingPrimaryAt(timelinePos, skipSeekToStartPosition);
      }
    }
    if (!skipSeekToStartPosition) {
      this.timelinePos = timelinePos;
      this.startLoadingPrimaryAt(timelinePos, skipSeekToStartPosition);
    }
  }
  startLoadingPrimaryAt(timelinePos, skipSeekToStartPosition) {
    var _hls$mainForwardBuffe;
    const hls = this.hls;
    if (!hls.loadingEnabled || !hls.media || Math.abs((((_hls$mainForwardBuffe = hls.mainForwardBufferInfo) == null ? void 0 : _hls$mainForwardBuffe.start) || hls.media.currentTime) - timelinePos) > 0.5) {
      hls.startLoad(timelinePos, skipSeekToStartPosition);
    } else if (!hls.bufferingEnabled) {
      hls.resumeBuffering();
    }
  }
  onManifestLoading() {
    this.stopLoad();
    this.schedule.reset();
    this.emptyPlayerQueue();
    this.clearScheduleState();
    this.shouldPlay = false;
    this.bufferedPos = this.timelinePos = -1;
    this.mediaSelection = this.altSelection = this.manager = this.requiredTracks = null;
    this.hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
    this.hls.on(Events.BUFFER_CODECS, this.onBufferCodecs, this);
  }
  onLevelUpdated(event, data) {
    if (data.level === -1) {
      return;
    }
    const main = this.hls.levels[data.level];
    const currentSelection = _objectSpread2(_objectSpread2({}, this.mediaSelection || this.altSelection), {}, {
      main
    });
    this.mediaSelection = currentSelection;
    this.schedule.parseInterstitialDateRanges(currentSelection, this.hls.config.interstitialAppendInPlace);
    if (!this.effectivePlayingItem && this.schedule.items) {
      this.checkStart();
    }
  }
  onAudioTrackUpdated(event, data) {
    const audio = this.hls.audioTracks[data.id];
    const previousSelection = this.mediaSelection;
    if (!previousSelection) {
      this.altSelection = _objectSpread2(_objectSpread2({}, this.altSelection), {}, {
        audio
      });
      return;
    }
    const currentSelection = _objectSpread2(_objectSpread2({}, previousSelection), {}, {
      audio
    });
    this.mediaSelection = currentSelection;
  }
  onSubtitleTrackUpdated(event, data) {
    const subtitles = this.hls.subtitleTracks[data.id];
    const previousSelection = this.mediaSelection;
    if (!previousSelection) {
      this.altSelection = _objectSpread2(_objectSpread2({}, this.altSelection), {}, {
        subtitles
      });
      return;
    }
    const currentSelection = _objectSpread2(_objectSpread2({}, previousSelection), {}, {
      subtitles
    });
    this.mediaSelection = currentSelection;
  }
  onAudioTrackSwitching(event, data) {
    const audioOption = getBasicSelectionOption(data);
    this.playerQueue.forEach((player) => player.hls.setAudioOption(data) || player.hls.setAudioOption(audioOption));
  }
  onSubtitleTrackSwitch(event, data) {
    const subtitleOption = getBasicSelectionOption(data);
    this.playerQueue.forEach((player) => player.hls.setSubtitleOption(data) || data.id !== -1 && player.hls.setSubtitleOption(subtitleOption));
  }
  onBufferCodecs(event, data) {
    const requiredTracks = data.tracks;
    if (requiredTracks) {
      this.requiredTracks = requiredTracks;
    }
  }
  onBufferAppended(event, data) {
    this.checkBuffer();
  }
  onBufferFlushed(event, data) {
    const playingItem = this.playingItem;
    if (playingItem && !this.itemsMatch(playingItem, this.bufferingItem) && !this.isInterstitial(playingItem)) {
      const timelinePos = this.timelinePos;
      this.bufferedPos = timelinePos;
      this.checkBuffer();
    }
  }
  onBufferedToEnd(event) {
    const interstitialEvents = this.schedule.events;
    if (this.bufferedPos < Number.MAX_VALUE && interstitialEvents) {
      for (let i = 0; i < interstitialEvents.length; i++) {
        const interstitial = interstitialEvents[i];
        if (interstitial.cue.post) {
          var _this$schedule$items;
          const scheduleIndex = this.schedule.findEventIndex(interstitial.identifier);
          const item = (_this$schedule$items = this.schedule.items) == null ? void 0 : _this$schedule$items[scheduleIndex];
          if (this.isInterstitial(item) && this.eventItemsMatch(item, this.bufferingItem)) {
            this.bufferedToItem(item, 0);
          }
          break;
        }
      }
      this.bufferedPos = Number.MAX_VALUE;
    }
  }
  onMediaEnded(event) {
    const playingItem = this.playingItem;
    if (!this.playingLastItem && playingItem) {
      const playingIndex = this.findItemIndex(playingItem);
      this.setSchedulePosition(playingIndex + 1);
    } else {
      this.shouldPlay = false;
    }
  }
  updateItem(previousItem, time) {
    const items = this.schedule.items;
    if (previousItem && items) {
      const index = this.findItemIndex(previousItem, time);
      return items[index] || null;
    }
    return null;
  }
  trimInPlace(updatedItem, itemBeforeUpdate) {
    if (this.isInterstitial(updatedItem) && updatedItem.event.appendInPlace && itemBeforeUpdate.end - updatedItem.end > 0.25) {
      updatedItem.event.assetList.forEach((asset, index) => {
        if (updatedItem.event.isAssetPastPlayoutLimit(index)) {
          this.clearAssetPlayer(asset.identifier, null);
        }
      });
      const flushStart = updatedItem.end + 0.25;
      const bufferInfo = BufferHelper.bufferInfo(this.primaryMedia, flushStart, 0);
      if (bufferInfo.end > flushStart || (bufferInfo.nextStart || 0) > flushStart) {
        this.attachPrimary(flushStart, null);
        this.flushFrontBuffer(flushStart);
      }
    }
  }
  itemsMatch(a, b) {
    return !!b && (a === b || a.event && b.event && this.eventItemsMatch(a, b) || !a.event && !b.event && this.findItemIndex(a) === this.findItemIndex(b));
  }
  eventItemsMatch(a, b) {
    var _b$event;
    return !!b && (a === b || a.event.identifier === ((_b$event = b.event) == null ? void 0 : _b$event.identifier));
  }
  findItemIndex(item, time) {
    return item ? this.schedule.findItemIndex(item, time) : -1;
  }
  updateSchedule() {
    const mediaSelection = this.mediaSelection;
    if (!mediaSelection) {
      return;
    }
    this.schedule.updateSchedule(mediaSelection, []);
  }
  checkBuffer(starved) {
    const items = this.schedule.items;
    if (!items) {
      return;
    }
    const bufferInfo = BufferHelper.bufferInfo(this.primaryMedia, this.timelinePos, 0);
    if (starved) {
      this.bufferedPos = this.timelinePos;
    }
    starved || (starved = bufferInfo.len < 1);
    this.updateBufferedPos(bufferInfo.end, items, starved);
  }
  updateBufferedPos(bufferEnd, items, bufferIsEmpty) {
    const schedule = this.schedule;
    const bufferingItem = this.bufferingItem;
    if (this.bufferedPos > bufferEnd) {
      return;
    }
    if (items.length === 1 && this.itemsMatch(items[0], bufferingItem)) {
      this.bufferedPos = bufferEnd;
      return;
    }
    const playingItem = this.playingItem;
    const playingIndex = this.findItemIndex(playingItem);
    let bufferEndIndex = schedule.findItemIndexAtTime(bufferEnd);
    if (this.bufferedPos < bufferEnd) {
      var _nextItemToBuffer$eve, _bufferingItem$event;
      const bufferingIndex = this.findItemIndex(bufferingItem);
      const nextToBufferIndex = Math.min(bufferingIndex + 1, items.length - 1);
      const nextItemToBuffer = items[nextToBufferIndex];
      if (bufferEndIndex === -1 && bufferingItem && bufferEnd >= bufferingItem.end || (_nextItemToBuffer$eve = nextItemToBuffer.event) != null && _nextItemToBuffer$eve.appendInPlace && bufferEnd + 0.01 >= nextItemToBuffer.start) {
        bufferEndIndex = nextToBufferIndex;
      }
      if (nextToBufferIndex - playingIndex > 1 && (bufferingItem == null ? void 0 : (_bufferingItem$event = bufferingItem.event) == null ? void 0 : _bufferingItem$event.appendInPlace) === false) {
        return;
      }
      this.bufferedPos = bufferEnd;
      if (bufferEndIndex > bufferingIndex && bufferEndIndex > playingIndex) {
        this.bufferedToItem(nextItemToBuffer);
      } else {
        const details = this.primaryDetails;
        if (this.primaryLive && details && bufferEnd > details.edge - details.targetduration && nextItemToBuffer.start < details.edge + this.hls.config.interstitialLiveLookAhead && this.isInterstitial(nextItemToBuffer)) {
          this.preloadAssets(nextItemToBuffer.event, 0);
        }
      }
    } else if (bufferIsEmpty && playingItem && !this.itemsMatch(playingItem, bufferingItem)) {
      if (bufferEndIndex === playingIndex) {
        this.bufferedToItem(playingItem);
      } else if (bufferEndIndex === playingIndex + 1) {
        this.bufferedToItem(items[bufferEndIndex]);
      }
    }
  }
  assetsBuffered(item, media) {
    const assetList = item.event.assetList;
    if (assetList.length === 0) {
      return false;
    }
    return !item.event.assetList.some((asset) => {
      const player = this.getAssetPlayer(asset.identifier);
      return !(player != null && player.bufferedInPlaceToEnd(media));
    });
  }
  setBufferingItem(item) {
    const bufferingLast = this.bufferingItem;
    const schedule = this.schedule;
    if (!this.itemsMatch(item, bufferingLast)) {
      const {
        items,
        events
      } = schedule;
      if (!items || !events) {
        return bufferingLast;
      }
      const isInterstitial = this.isInterstitial(item);
      const bufferingPlayer = this.getBufferingPlayer();
      this.bufferingItem = item;
      this.bufferedPos = Math.max(item.start, Math.min(item.end, this.timelinePos));
      const timeRemaining = bufferingPlayer ? bufferingPlayer.remaining : bufferingLast ? bufferingLast.end - this.timelinePos : 0;
      this.log(`INTERSTITIALS_BUFFERED_TO_BOUNDARY ${segmentToString(item)}` + (bufferingLast ? ` (${timeRemaining.toFixed(2)} remaining)` : ""));
      if (!this.playbackDisabled) {
        if (isInterstitial) {
          item.event.assetList.forEach((asset) => {
            const player = this.getAssetPlayer(asset.identifier);
            if (player) {
              player.resumeBuffering();
            }
          });
        } else {
          this.hls.resumeBuffering();
          this.playerQueue.forEach((player) => player.pauseBuffering());
        }
      }
      this.hls.trigger(Events.INTERSTITIALS_BUFFERED_TO_BOUNDARY, {
        events: events.slice(0),
        schedule: items.slice(0),
        bufferingIndex: this.findItemIndex(item),
        playingIndex: this.findItemIndex(this.playingItem)
      });
    } else if (this.bufferingItem !== item) {
      this.bufferingItem = item;
    }
    return bufferingLast;
  }
  bufferedToItem(item, assetListIndex = 0) {
    const bufferingLast = this.setBufferingItem(item);
    if (this.playbackDisabled) {
      return;
    }
    if (this.isInterstitial(item)) {
      this.bufferedToEvent(item, assetListIndex);
    } else if (bufferingLast !== null) {
      this.bufferingAsset = null;
      const detachedData = this.detachedData;
      if (detachedData) {
        if (detachedData.mediaSource) {
          const skipSeekToStartPosition = true;
          this.attachPrimary(item.start, item, skipSeekToStartPosition);
        } else {
          this.preloadPrimary(item);
        }
      } else {
        this.preloadPrimary(item);
      }
    }
  }
  preloadPrimary(item) {
    const index = this.findItemIndex(item);
    const timelinePos = this.getPrimaryResumption(item, index);
    this.startLoadingPrimaryAt(timelinePos);
  }
  bufferedToEvent(item, assetListIndex) {
    const interstitial = item.event;
    const neverLoaded = interstitial.assetList.length === 0 && !interstitial.assetListLoader;
    const playOnce = interstitial.cue.once;
    if (neverLoaded || !playOnce) {
      const player = this.preloadAssets(interstitial, assetListIndex);
      if (player != null && player.interstitial.appendInPlace) {
        const assetItem = interstitial.assetList[assetListIndex];
        const media = this.primaryMedia;
        if (assetItem && media) {
          this.bufferAssetPlayer(player, media);
        }
      }
    }
  }
  preloadAssets(interstitial, assetListIndex) {
    const uri = interstitial.assetUrl;
    const assetListLength = interstitial.assetList.length;
    const neverLoaded = assetListLength === 0 && !interstitial.assetListLoader;
    const playOnce = interstitial.cue.once;
    if (neverLoaded) {
      const timelineStart = interstitial.timelineStart;
      if (interstitial.appendInPlace) {
        var _playingItem$nextEven;
        const playingItem = this.playingItem;
        if (!this.isInterstitial(playingItem) && (playingItem == null ? void 0 : (_playingItem$nextEven = playingItem.nextEvent) == null ? void 0 : _playingItem$nextEven.identifier) === interstitial.identifier) {
          this.flushFrontBuffer(timelineStart + 0.25);
        }
      }
      let hlsStartOffset;
      let liveStartPosition = 0;
      if (!this.playingItem && this.primaryLive) {
        liveStartPosition = this.hls.startPosition;
        if (liveStartPosition === -1) {
          liveStartPosition = this.hls.liveSyncPosition || 0;
        }
      }
      if (liveStartPosition && !(interstitial.cue.pre || interstitial.cue.post)) {
        const startOffset = liveStartPosition - timelineStart;
        if (startOffset > 0) {
          hlsStartOffset = Math.round(startOffset * 1e3) / 1e3;
        }
      }
      this.log(`Load interstitial asset ${assetListIndex + 1}/${uri ? 1 : assetListLength} ${interstitial}${hlsStartOffset ? ` live-start: ${liveStartPosition} start-offset: ${hlsStartOffset}` : ""}`);
      if (uri) {
        return this.createAsset(interstitial, 0, 0, timelineStart, interstitial.duration, uri);
      }
      const assetListLoader = this.assetListLoader.loadAssetList(interstitial, hlsStartOffset);
      if (assetListLoader) {
        interstitial.assetListLoader = assetListLoader;
      }
    } else if (!playOnce && assetListLength) {
      for (let i = assetListIndex; i < assetListLength; i++) {
        const asset = interstitial.assetList[i];
        const playerIndex = this.getAssetPlayerQueueIndex(asset.identifier);
        if ((playerIndex === -1 || this.playerQueue[playerIndex].destroyed) && !asset.error) {
          this.createAssetPlayer(interstitial, asset, i);
        }
      }
      return this.getAssetPlayer(interstitial.assetList[assetListIndex].identifier);
    }
    return null;
  }
  flushFrontBuffer(startOffset) {
    const requiredTracks = this.requiredTracks;
    if (!requiredTracks) {
      return;
    }
    this.log(`Removing front buffer starting at ${startOffset}`);
    const sourceBufferNames = Object.keys(requiredTracks);
    sourceBufferNames.forEach((type) => {
      this.hls.trigger(Events.BUFFER_FLUSHING, {
        startOffset,
        endOffset: Infinity,
        type
      });
    });
  }
  getAssetPlayerQueueIndex(assetId) {
    const playerQueue = this.playerQueue;
    for (let i = 0; i < playerQueue.length; i++) {
      if (assetId === playerQueue[i].assetId) {
        return i;
      }
    }
    return -1;
  }
  getAssetPlayer(assetId) {
    const index = this.getAssetPlayerQueueIndex(assetId);
    return this.playerQueue[index] || null;
  }
  getBufferingPlayer() {
    const {
      playerQueue,
      primaryMedia
    } = this;
    if (primaryMedia) {
      for (let i = 0; i < playerQueue.length; i++) {
        if (playerQueue[i].media === primaryMedia) {
          return playerQueue[i];
        }
      }
    }
    return null;
  }
  createAsset(interstitial, assetListIndex, startOffset, timelineStart, duration, uri) {
    const assetItem = {
      parentIdentifier: interstitial.identifier,
      identifier: generateAssetIdentifier(interstitial, uri, assetListIndex),
      duration,
      startOffset,
      timelineStart,
      uri
    };
    return this.createAssetPlayer(interstitial, assetItem, assetListIndex);
  }
  createAssetPlayer(interstitial, assetItem, assetListIndex) {
    const primary = this.hls;
    const userConfig = primary.userConfig;
    let videoPreference = userConfig.videoPreference;
    const currentLevel = primary.loadLevelObj || primary.levels[primary.currentLevel];
    if (videoPreference || currentLevel) {
      videoPreference = _extends({}, videoPreference);
      if (currentLevel.videoCodec) {
        videoPreference.videoCodec = currentLevel.videoCodec;
      }
      if (currentLevel.videoRange) {
        videoPreference.allowedVideoRanges = [currentLevel.videoRange];
      }
    }
    const selectedAudio = primary.audioTracks[primary.audioTrack];
    const selectedSubtitle = primary.subtitleTracks[primary.subtitleTrack];
    let startPosition = 0;
    if (this.primaryLive || interstitial.appendInPlace) {
      const timePastStart = this.timelinePos - assetItem.timelineStart;
      if (timePastStart > 1) {
        const duration = assetItem.duration;
        if (duration && timePastStart < duration) {
          startPosition = timePastStart;
        }
      }
    }
    const assetId = assetItem.identifier;
    const playerConfig = _objectSpread2(_objectSpread2({}, userConfig), {}, {
      autoStartLoad: true,
      startFragPrefetch: true,
      primarySessionId: primary.sessionId,
      assetPlayerId: assetId,
      abrEwmaDefaultEstimate: primary.bandwidthEstimate,
      interstitialsController: void 0,
      startPosition,
      liveDurationInfinity: false,
      testBandwidth: false,
      videoPreference,
      audioPreference: selectedAudio || userConfig.audioPreference,
      subtitlePreference: selectedSubtitle || userConfig.subtitlePreference
    });
    if (interstitial.appendInPlace) {
      interstitial.appendInPlaceStarted = true;
      if (assetItem.timelineStart) {
        playerConfig.timelineOffset = assetItem.timelineStart;
      }
    }
    const cmcd = playerConfig.cmcd;
    if (cmcd != null && cmcd.sessionId && cmcd.contentId) {
      playerConfig.cmcd = _extends({}, cmcd, {
        contentId: hash(assetItem.uri)
      });
    }
    if (this.getAssetPlayer(assetId)) {
      this.warn(`Duplicate date range identifier ${interstitial} and asset ${assetId}`);
    }
    const player = new HlsAssetPlayer(this.HlsPlayerClass, playerConfig, interstitial, assetItem);
    this.playerQueue.push(player);
    interstitial.assetList[assetListIndex] = assetItem;
    const updateAssetPlayerDetails = (details) => {
      if (details.live) {
        const error = new Error(`Interstitials MUST be VOD assets ${interstitial}`);
        const errorData = {
          fatal: true,
          type: ErrorTypes.OTHER_ERROR,
          details: ErrorDetails.INTERSTITIAL_ASSET_ITEM_ERROR,
          error
        };
        this.handleAssetItemError(errorData, interstitial, this.schedule.findEventIndex(interstitial.identifier), assetListIndex, error.message);
        return;
      }
      const duration = details.edge - details.fragmentStart;
      const currentAssetDuration = assetItem.duration;
      if (currentAssetDuration === null || duration > currentAssetDuration) {
        this.log(`Interstitial asset "${assetId}" duration change ${currentAssetDuration} > ${duration}`);
        assetItem.duration = duration;
        this.updateSchedule();
      }
    };
    player.on(Events.LEVEL_UPDATED, (event, {
      details
    }) => updateAssetPlayerDetails(details));
    player.on(Events.LEVEL_PTS_UPDATED, (event, {
      details
    }) => updateAssetPlayerDetails(details));
    const onBufferCodecs = (event, data) => {
      const inQueuPlayer = this.getAssetPlayer(assetId);
      if (inQueuPlayer && data.tracks) {
        inQueuPlayer.off(Events.BUFFER_CODECS, onBufferCodecs);
        inQueuPlayer.tracks = data.tracks;
        const media = this.primaryMedia;
        if (this.bufferingAsset === inQueuPlayer.assetItem && media && !inQueuPlayer.media) {
          this.bufferAssetPlayer(inQueuPlayer, media);
        }
      }
    };
    player.on(Events.BUFFER_CODECS, onBufferCodecs);
    const bufferedToEnd = () => {
      var _this$schedule$items2;
      const inQueuPlayer = this.getAssetPlayer(assetId);
      this.log(`buffered to end of asset ${inQueuPlayer}`);
      if (!inQueuPlayer) {
        return;
      }
      const scheduleIndex = this.schedule.findEventIndex(interstitial.identifier);
      const item = (_this$schedule$items2 = this.schedule.items) == null ? void 0 : _this$schedule$items2[scheduleIndex];
      if (this.isInterstitial(item)) {
        const assetListIndex2 = interstitial.findAssetIndex(assetItem);
        const nextAssetIndex = getNextAssetIndex(interstitial, assetListIndex2);
        if (!interstitial.isAssetPastPlayoutLimit(nextAssetIndex)) {
          this.bufferedToItem(item, nextAssetIndex);
        } else {
          var _this$schedule$items3;
          const nextItem = (_this$schedule$items3 = this.schedule.items) == null ? void 0 : _this$schedule$items3[scheduleIndex + 1];
          if (nextItem) {
            this.bufferedToItem(nextItem);
          }
        }
      }
    };
    player.on(Events.BUFFERED_TO_END, bufferedToEnd);
    const endedWithAssetIndex = (assetIndex) => {
      return () => {
        const inQueuPlayer = this.getAssetPlayer(assetId);
        if (!inQueuPlayer) {
          return;
        }
        this.shouldPlay = true;
        const scheduleIndex = this.schedule.findEventIndex(interstitial.identifier);
        this.advanceAfterAssetEnded(interstitial, scheduleIndex, assetIndex);
      };
    };
    player.once(Events.MEDIA_ENDED, endedWithAssetIndex(assetListIndex));
    player.once(Events.PLAYOUT_LIMIT_REACHED, endedWithAssetIndex(Infinity));
    player.on(Events.ERROR, (event, data) => {
      const inQueuPlayer = this.getAssetPlayer(assetId);
      if (data.details === ErrorDetails.BUFFER_STALLED_ERROR) {
        if (inQueuPlayer != null && inQueuPlayer.media) {
          const assetCurrentTime = inQueuPlayer.currentTime;
          const distanceFromEnd = inQueuPlayer.duration - assetCurrentTime;
          if (assetCurrentTime && interstitial.appendInPlace && distanceFromEnd / inQueuPlayer.media.playbackRate < 0.5) {
            this.log(`Advancing buffer past end of asset ${assetId} ${interstitial} at ${inQueuPlayer.media.currentTime}`);
            bufferedToEnd();
          } else {
            this.warn(`Stalled at ${assetCurrentTime} of ${assetCurrentTime + distanceFromEnd} in asset ${assetId} ${interstitial}`);
            this.onTimeupdate();
            this.checkBuffer(true);
          }
        }
        return;
      }
      this.handleAssetItemError(data, interstitial, this.schedule.findEventIndex(interstitial.identifier), assetListIndex, `Asset player error ${data.error} ${interstitial}`);
    });
    player.on(Events.DESTROYING, () => {
      const inQueuPlayer = this.getAssetPlayer(assetId);
      if (!inQueuPlayer) {
        return;
      }
      const error = new Error(`Asset player destroyed unexpectedly ${assetId}`);
      const errorData = {
        fatal: true,
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.INTERSTITIAL_ASSET_ITEM_ERROR,
        error
      };
      this.handleAssetItemError(errorData, interstitial, this.schedule.findEventIndex(interstitial.identifier), assetListIndex, error.message);
    });
    this.log(`INTERSTITIAL_ASSET_PLAYER_CREATED ${eventAssetToString(assetItem)}`);
    this.hls.trigger(Events.INTERSTITIAL_ASSET_PLAYER_CREATED, {
      asset: assetItem,
      assetListIndex,
      event: interstitial,
      player
    });
    return player;
  }
  clearInterstitial(interstitial, toSegment) {
    interstitial.assetList.forEach((asset) => {
      this.clearAssetPlayer(asset.identifier, toSegment);
    });
    interstitial.reset();
  }
  resetAssetPlayer(assetId) {
    const playerIndex = this.getAssetPlayerQueueIndex(assetId);
    if (playerIndex !== -1) {
      this.log(`reset asset player "${assetId}" after error`);
      const player = this.playerQueue[playerIndex];
      this.transferMediaFromPlayer(player, null);
      player.resetDetails();
    }
  }
  clearAssetPlayer(assetId, toSegment) {
    const playerIndex = this.getAssetPlayerQueueIndex(assetId);
    if (playerIndex !== -1) {
      this.log(`clear asset player "${assetId}" toSegment: ${toSegment ? segmentToString(toSegment) : toSegment}`);
      const player = this.playerQueue[playerIndex];
      this.transferMediaFromPlayer(player, toSegment);
      this.playerQueue.splice(playerIndex, 1);
      player.destroy();
    }
  }
  emptyPlayerQueue() {
    let player;
    while (player = this.playerQueue.pop()) {
      player.destroy();
    }
    this.playerQueue = [];
  }
  startAssetPlayer(player, assetListIndex, scheduleItems, scheduleIndex, media) {
    const {
      interstitial,
      assetItem,
      assetId
    } = player;
    const assetListLength = interstitial.assetList.length;
    const playingAsset = this.playingAsset;
    this.endedAsset = null;
    this.playingAsset = assetItem;
    if (!playingAsset || playingAsset.identifier !== assetId) {
      if (playingAsset) {
        this.clearAssetPlayer(playingAsset.identifier, scheduleItems[scheduleIndex]);
        delete playingAsset.error;
      }
      this.log(`INTERSTITIAL_ASSET_STARTED ${assetListIndex + 1}/${assetListLength} ${eventAssetToString(assetItem)}`);
      this.hls.trigger(Events.INTERSTITIAL_ASSET_STARTED, {
        asset: assetItem,
        assetListIndex,
        event: interstitial,
        schedule: scheduleItems.slice(0),
        scheduleIndex,
        player
      });
    }
    this.bufferAssetPlayer(player, media);
  }
  bufferAssetPlayer(player, media) {
    var _this$schedule$items4, _this$detachedData5;
    const {
      interstitial,
      assetItem
    } = player;
    const scheduleIndex = this.schedule.findEventIndex(interstitial.identifier);
    const item = (_this$schedule$items4 = this.schedule.items) == null ? void 0 : _this$schedule$items4[scheduleIndex];
    if (!item) {
      return;
    }
    this.setBufferingItem(item);
    this.bufferingAsset = assetItem;
    const bufferingPlayer = this.getBufferingPlayer();
    if (bufferingPlayer === player) {
      return;
    }
    const appendInPlaceNext = interstitial.appendInPlace;
    if (appendInPlaceNext && (bufferingPlayer == null ? void 0 : bufferingPlayer.interstitial.appendInPlace) === false) {
      return;
    }
    const activeTracks = (bufferingPlayer == null ? void 0 : bufferingPlayer.tracks) || ((_this$detachedData5 = this.detachedData) == null ? void 0 : _this$detachedData5.tracks) || this.requiredTracks;
    if (appendInPlaceNext && assetItem !== this.playingAsset) {
      if (!player.tracks) {
        return;
      }
      if (activeTracks && !isCompatibleTrackChange(activeTracks, player.tracks)) {
        const error = new Error(`Asset ${eventAssetToString(assetItem)} SourceBuffer tracks ('${Object.keys(player.tracks)}') are not compatible with primary content tracks ('${Object.keys(activeTracks)}')`);
        const errorData = {
          fatal: true,
          type: ErrorTypes.OTHER_ERROR,
          details: ErrorDetails.INTERSTITIAL_ASSET_ITEM_ERROR,
          error
        };
        const assetListIndex = interstitial.findAssetIndex(assetItem);
        this.handleAssetItemError(errorData, interstitial, scheduleIndex, assetListIndex, error.message);
        return;
      }
    }
    this.transferMediaTo(player, media);
  }
  handleAssetItemError(data, interstitial, scheduleIndex, assetListIndex, errorMessage) {
    if (data.details === ErrorDetails.BUFFER_STALLED_ERROR) {
      return;
    }
    const assetItem = interstitial.assetList[assetListIndex];
    this.warn(`INTERSTITIAL_ASSET_ERROR ${assetItem ? eventAssetToString(assetItem) : assetItem} ${data.error}`);
    const assetId = assetItem == null ? void 0 : assetItem.identifier;
    const playerIndex = this.getAssetPlayerQueueIndex(assetId);
    const player = this.playerQueue[playerIndex] || null;
    const items = this.schedule.items;
    const interstitialAssetError = _extends({}, data, {
      fatal: false,
      errorAction: createDoNothingErrorAction(true),
      asset: assetItem,
      assetListIndex,
      event: interstitial,
      schedule: items,
      scheduleIndex,
      player
    });
    this.hls.trigger(Events.INTERSTITIAL_ASSET_ERROR, interstitialAssetError);
    if (!data.fatal) {
      return;
    }
    const playingAsset = this.playingAsset;
    const error = new Error(errorMessage);
    if (assetItem) {
      this.clearAssetPlayer(assetId, null);
      assetItem.error = error;
    }
    if (!interstitial.assetList.some((asset) => !asset.error)) {
      interstitial.error = error;
    } else {
      for (let i = assetListIndex; i < interstitial.assetList.length; i++) {
        this.resetAssetPlayer(interstitial.assetList[i].identifier);
      }
      this.updateSchedule();
    }
    if (interstitial.error) {
      this.primaryFallback(interstitial);
    } else if (playingAsset && playingAsset.identifier === assetId) {
      this.advanceAfterAssetEnded(interstitial, scheduleIndex, assetListIndex);
    }
  }
  primaryFallback(interstitial) {
    const flushStart = interstitial.timelineStart;
    const playingItem = this.effectivePlayingItem;
    this.updateSchedule();
    if (playingItem) {
      this.log(`Fallback to primary from event "${interstitial.identifier}" start: ${flushStart} pos: ${this.timelinePos} playing: ${playingItem ? segmentToString(playingItem) : "<none>"} error: ${interstitial.error}`);
      let timelinePos = this.timelinePos;
      if (timelinePos === -1) {
        timelinePos = this.hls.startPosition;
      }
      const newPlayingItem = this.updateItem(playingItem, timelinePos);
      if (this.itemsMatch(playingItem, newPlayingItem)) {
        this.clearInterstitial(interstitial, null);
      }
      if (interstitial.appendInPlace) {
        this.attachPrimary(flushStart, null);
        this.flushFrontBuffer(flushStart);
      }
      const scheduleIndex = this.schedule.findItemIndexAtTime(timelinePos);
      this.setSchedulePosition(scheduleIndex);
    } else {
      this.checkStart();
    }
  }
  onAssetListLoaded(event, data) {
    var _this$bufferingItem2;
    const interstitial = data.event;
    const interstitialId = interstitial.identifier;
    const assets = data.assetListResponse.ASSETS;
    if (!this.schedule.hasEvent(interstitialId)) {
      return;
    }
    const eventStart = interstitial.timelineStart;
    const previousDuration = interstitial.duration;
    let sumDuration = 0;
    assets.forEach((asset, assetListIndex) => {
      const duration = parseFloat(asset.DURATION);
      this.createAsset(interstitial, assetListIndex, sumDuration, eventStart + sumDuration, duration, asset.URI);
      sumDuration += duration;
    });
    interstitial.duration = sumDuration;
    this.log(`Loaded asset-list with duration: ${sumDuration} (was: ${previousDuration}) ${interstitial}`);
    const waitingItem = this.waitingItem;
    const waitingForItem = (waitingItem == null ? void 0 : waitingItem.event.identifier) === interstitialId;
    this.updateSchedule();
    const bufferingEvent = (_this$bufferingItem2 = this.bufferingItem) == null ? void 0 : _this$bufferingItem2.event;
    if (waitingForItem) {
      var _this$schedule$items5;
      const scheduleIndex = this.schedule.findEventIndex(interstitialId);
      const item = (_this$schedule$items5 = this.schedule.items) == null ? void 0 : _this$schedule$items5[scheduleIndex];
      if (item) {
        if (!this.playingItem && this.timelinePos > item.end) {
          const index = this.schedule.findItemIndexAtTime(this.timelinePos);
          if (index !== scheduleIndex) {
            interstitial.error = new Error(`Interstitial no longer within playback range ${this.timelinePos} ${interstitial}`);
            this.primaryFallback(interstitial);
            return;
          }
        }
        this.setBufferingItem(item);
      }
      this.setSchedulePosition(scheduleIndex);
    } else if ((bufferingEvent == null ? void 0 : bufferingEvent.identifier) === interstitialId && bufferingEvent.appendInPlace) {
      const assetItem = interstitial.assetList[0];
      const player = this.getAssetPlayer(assetItem.identifier);
      const media = this.primaryMedia;
      if (assetItem && player && media) {
        this.bufferAssetPlayer(player, media);
      }
    }
  }
  onError(event, data) {
    switch (data.details) {
      case ErrorDetails.ASSET_LIST_PARSING_ERROR:
      case ErrorDetails.ASSET_LIST_LOAD_ERROR:
      case ErrorDetails.ASSET_LIST_LOAD_TIMEOUT: {
        const interstitial = data.interstitial;
        if (interstitial) {
          this.primaryFallback(interstitial);
        }
        break;
      }
      case ErrorDetails.BUFFER_STALLED_ERROR: {
        this.onTimeupdate();
        this.checkBuffer(true);
        break;
      }
    }
  }
};
var TICK_INTERVAL$2 = 500;
var SubtitleStreamController = class extends BaseStreamController {
  constructor(hls, fragmentTracker, keyLoader) {
    super(hls, fragmentTracker, keyLoader, "subtitle-stream-controller", PlaylistLevelType.SUBTITLE);
    this.currentTrackId = -1;
    this.tracksBuffered = [];
    this.mainDetails = null;
    this.registerListeners();
  }
  onHandlerDestroying() {
    this.unregisterListeners();
    super.onHandlerDestroying();
    this.mainDetails = null;
  }
  registerListeners() {
    super.registerListeners();
    const {
      hls
    } = this;
    hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.on(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
    hls.on(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
    hls.on(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
    hls.on(Events.SUBTITLE_FRAG_PROCESSED, this.onSubtitleFragProcessed, this);
    hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
  }
  unregisterListeners() {
    super.unregisterListeners();
    const {
      hls
    } = this;
    hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.off(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
    hls.off(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
    hls.off(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
    hls.off(Events.SUBTITLE_FRAG_PROCESSED, this.onSubtitleFragProcessed, this);
    hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
  }
  startLoad(startPosition, skipSeekToStartPosition) {
    this.stopLoad();
    this.state = State.IDLE;
    this.setInterval(TICK_INTERVAL$2);
    this.nextLoadPosition = this.lastCurrentTime = startPosition + this.timelineOffset;
    this.startPosition = skipSeekToStartPosition ? -1 : startPosition;
    this.tick();
  }
  onManifestLoading() {
    super.onManifestLoading();
    this.mainDetails = null;
  }
  onMediaDetaching(event, data) {
    this.tracksBuffered = [];
    super.onMediaDetaching(event, data);
  }
  onLevelLoaded(event, data) {
    this.mainDetails = data.details;
  }
  onSubtitleFragProcessed(event, data) {
    const {
      frag,
      success
    } = data;
    if (!this.fragContextChanged(frag)) {
      if (isMediaFragment(frag)) {
        this.fragPrevious = frag;
      }
      this.state = State.IDLE;
    }
    if (!success) {
      return;
    }
    const buffered = this.tracksBuffered[this.currentTrackId];
    if (!buffered) {
      return;
    }
    let timeRange;
    const fragStart = frag.start;
    for (let i = 0; i < buffered.length; i++) {
      if (fragStart >= buffered[i].start && fragStart <= buffered[i].end) {
        timeRange = buffered[i];
        break;
      }
    }
    const fragEnd = frag.start + frag.duration;
    if (timeRange) {
      timeRange.end = fragEnd;
    } else {
      timeRange = {
        start: fragStart,
        end: fragEnd
      };
      buffered.push(timeRange);
    }
    this.fragmentTracker.fragBuffered(frag);
    this.fragBufferedComplete(frag, null);
    if (this.media) {
      this.tick();
    }
  }
  onBufferFlushing(event, data) {
    const {
      startOffset,
      endOffset
    } = data;
    if (startOffset === 0 && endOffset !== Number.POSITIVE_INFINITY) {
      const endOffsetSubtitles = endOffset - 1;
      if (endOffsetSubtitles <= 0) {
        return;
      }
      data.endOffsetSubtitles = Math.max(0, endOffsetSubtitles);
      this.tracksBuffered.forEach((buffered) => {
        for (let i = 0; i < buffered.length; ) {
          if (buffered[i].end <= endOffsetSubtitles) {
            buffered.shift();
            continue;
          } else if (buffered[i].start < endOffsetSubtitles) {
            buffered[i].start = endOffsetSubtitles;
          } else {
            break;
          }
          i++;
        }
      });
      this.fragmentTracker.removeFragmentsInRange(startOffset, endOffsetSubtitles, PlaylistLevelType.SUBTITLE);
    }
  }
  onError(event, data) {
    const frag = data.frag;
    if ((frag == null ? void 0 : frag.type) === PlaylistLevelType.SUBTITLE) {
      if (data.details === ErrorDetails.FRAG_GAP) {
        this.fragmentTracker.fragBuffered(frag, true);
      }
      if (this.fragCurrent) {
        this.fragCurrent.abortRequests();
      }
      if (this.state !== State.STOPPED) {
        this.state = State.IDLE;
      }
    }
  }
  onSubtitleTracksUpdated(event, {
    subtitleTracks
  }) {
    if (this.levels && subtitleOptionsIdentical(this.levels, subtitleTracks)) {
      this.levels = subtitleTracks.map((mediaPlaylist) => new Level(mediaPlaylist));
      return;
    }
    this.tracksBuffered = [];
    this.levels = subtitleTracks.map((mediaPlaylist) => {
      const level = new Level(mediaPlaylist);
      this.tracksBuffered[level.id] = [];
      return level;
    });
    this.fragmentTracker.removeFragmentsInRange(0, Number.POSITIVE_INFINITY, PlaylistLevelType.SUBTITLE);
    this.fragPrevious = null;
    this.mediaBuffer = null;
  }
  onSubtitleTrackSwitch(event, data) {
    var _this$levels;
    this.currentTrackId = data.id;
    if (!((_this$levels = this.levels) != null && _this$levels.length) || this.currentTrackId === -1) {
      this.clearInterval();
      return;
    }
    const currentTrack = this.levels[this.currentTrackId];
    if (currentTrack != null && currentTrack.details) {
      this.mediaBuffer = this.mediaBufferTimeRanges;
    } else {
      this.mediaBuffer = null;
    }
    if (currentTrack && this.state !== State.STOPPED) {
      this.setInterval(TICK_INTERVAL$2);
    }
  }
  onSubtitleTrackLoaded(event, data) {
    var _track$details;
    const {
      currentTrackId,
      levels
    } = this;
    const {
      details: newDetails,
      id: trackId
    } = data;
    if (!levels) {
      this.warn(`Subtitle tracks were reset while loading level ${trackId}`);
      return;
    }
    const track = levels[trackId];
    if (trackId >= levels.length || !track) {
      return;
    }
    this.log(`Subtitle track ${trackId} loaded [${newDetails.startSN},${newDetails.endSN}]${newDetails.lastPartSn ? `[part-${newDetails.lastPartSn}-${newDetails.lastPartIndex}]` : ""},duration:${newDetails.totalduration}`);
    this.mediaBuffer = this.mediaBufferTimeRanges;
    let sliding = 0;
    if (newDetails.live || (_track$details = track.details) != null && _track$details.live) {
      if (newDetails.deltaUpdateFailed) {
        return;
      }
      const mainDetails = this.mainDetails;
      if (!mainDetails) {
        this.startFragRequested = false;
        return;
      }
      const mainSlidingStartFragment = mainDetails.fragments[0];
      if (!track.details) {
        if (newDetails.hasProgramDateTime && mainDetails.hasProgramDateTime) {
          alignMediaPlaylistByPDT(newDetails, mainDetails);
          sliding = newDetails.fragmentStart;
        } else if (mainSlidingStartFragment) {
          sliding = mainSlidingStartFragment.start;
          addSliding(newDetails, sliding);
        }
      } else {
        var _this$levelLastLoaded;
        sliding = this.alignPlaylists(newDetails, track.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
        if (sliding === 0 && mainSlidingStartFragment) {
          sliding = mainSlidingStartFragment.start;
          addSliding(newDetails, sliding);
        }
      }
      if (mainDetails && !this.startFragRequested) {
        this.setStartPosition(mainDetails, sliding);
      }
    }
    track.details = newDetails;
    this.levelLastLoaded = track;
    if (trackId !== currentTrackId) {
      return;
    }
    this.hls.trigger(Events.SUBTITLE_TRACK_UPDATED, {
      details: newDetails,
      id: trackId,
      groupId: data.groupId
    });
    this.tick();
    if (newDetails.live && !this.fragCurrent && this.media && this.state === State.IDLE) {
      const foundFrag = findFragmentByPTS(null, newDetails.fragments, this.media.currentTime, 0);
      if (!foundFrag) {
        this.warn("Subtitle playlist not aligned with playback");
        track.details = void 0;
      }
    }
  }
  _handleFragmentLoadComplete(fragLoadedData) {
    const {
      frag,
      payload
    } = fragLoadedData;
    const decryptData = frag.decryptdata;
    const hls = this.hls;
    if (this.fragContextChanged(frag)) {
      return;
    }
    if (payload && payload.byteLength > 0 && decryptData != null && decryptData.key && decryptData.iv && isFullSegmentEncryption(decryptData.method)) {
      const startTime = performance.now();
      this.decrypter.decrypt(new Uint8Array(payload), decryptData.key.buffer, decryptData.iv.buffer, getAesModeFromFullSegmentMethod(decryptData.method)).catch((err) => {
        hls.trigger(Events.ERROR, {
          type: ErrorTypes.MEDIA_ERROR,
          details: ErrorDetails.FRAG_DECRYPT_ERROR,
          fatal: false,
          error: err,
          reason: err.message,
          frag
        });
        throw err;
      }).then((decryptedData) => {
        const endTime = performance.now();
        hls.trigger(Events.FRAG_DECRYPTED, {
          frag,
          payload: decryptedData,
          stats: {
            tstart: startTime,
            tdecrypt: endTime
          }
        });
      }).catch((err) => {
        this.warn(`${err.name}: ${err.message}`);
        this.state = State.IDLE;
      });
    }
  }
  doTick() {
    if (!this.media) {
      this.state = State.IDLE;
      return;
    }
    if (this.state === State.IDLE) {
      const {
        currentTrackId,
        levels
      } = this;
      const track = levels == null ? void 0 : levels[currentTrackId];
      if (!track || !levels.length || !track.details) {
        return;
      }
      if (this.waitForLive(track)) {
        return;
      }
      const {
        config
      } = this;
      const currentTime = this.getLoadPosition();
      const bufferedInfo = BufferHelper.bufferedInfo(this.tracksBuffered[this.currentTrackId] || [], currentTime, config.maxBufferHole);
      const {
        end: targetBufferTime,
        len: bufferLen
      } = bufferedInfo;
      const trackDetails = track.details;
      const maxBufLen = this.hls.maxBufferLength + trackDetails.levelTargetDuration;
      if (bufferLen > maxBufLen) {
        return;
      }
      const fragments = trackDetails.fragments;
      const fragLen = fragments.length;
      const end = trackDetails.edge;
      let foundFrag = null;
      const fragPrevious = this.fragPrevious;
      if (targetBufferTime < end) {
        const tolerance = config.maxFragLookUpTolerance;
        const lookupTolerance = targetBufferTime > end - tolerance ? 0 : tolerance;
        foundFrag = findFragmentByPTS(fragPrevious, fragments, Math.max(fragments[0].start, targetBufferTime), lookupTolerance);
        if (!foundFrag && fragPrevious && fragPrevious.start < fragments[0].start) {
          foundFrag = fragments[0];
        }
      } else {
        foundFrag = fragments[fragLen - 1];
      }
      foundFrag = this.filterReplacedPrimary(foundFrag, track.details);
      if (!foundFrag) {
        return;
      }
      const curSNIdx = foundFrag.sn - trackDetails.startSN;
      const prevFrag = fragments[curSNIdx - 1];
      if (prevFrag && prevFrag.cc === foundFrag.cc && this.fragmentTracker.getState(prevFrag) === FragmentState.NOT_LOADED) {
        foundFrag = prevFrag;
      }
      if (this.fragmentTracker.getState(foundFrag) === FragmentState.NOT_LOADED) {
        const fragToLoad = this.mapToInitFragWhenRequired(foundFrag);
        if (fragToLoad) {
          this.loadFragment(fragToLoad, track, targetBufferTime);
        }
      }
    }
  }
  loadFragment(frag, level, targetBufferTime) {
    if (!isMediaFragment(frag)) {
      this._loadInitSegment(frag, level);
    } else {
      super.loadFragment(frag, level, targetBufferTime);
    }
  }
  get mediaBufferTimeRanges() {
    return new BufferableInstance(this.tracksBuffered[this.currentTrackId] || []);
  }
};
var BufferableInstance = class {
  constructor(timeranges) {
    this.buffered = void 0;
    const getRange = (name, index, length) => {
      index = index >>> 0;
      if (index > length - 1) {
        throw new DOMException(`Failed to execute '${name}' on 'TimeRanges': The index provided (${index}) is greater than the maximum bound (${length})`);
      }
      return timeranges[index][name];
    };
    this.buffered = {
      get length() {
        return timeranges.length;
      },
      end(index) {
        return getRange("end", index, timeranges.length);
      },
      start(index) {
        return getRange("start", index, timeranges.length);
      }
    };
  }
};
var specialCea608CharsCodes = {
  42: 225,
  92: 233,
  94: 237,
  95: 243,
  96: 250,
  123: 231,
  124: 247,
  125: 209,
  126: 241,
  127: 9608,
  128: 174,
  129: 176,
  130: 189,
  131: 191,
  132: 8482,
  133: 162,
  134: 163,
  135: 9834,
  136: 224,
  137: 32,
  138: 232,
  139: 226,
  140: 234,
  141: 238,
  142: 244,
  143: 251,
  144: 193,
  145: 201,
  146: 211,
  147: 218,
  148: 220,
  149: 252,
  150: 8216,
  151: 161,
  152: 42,
  153: 8217,
  154: 9473,
  155: 169,
  156: 8480,
  157: 8226,
  158: 8220,
  159: 8221,
  160: 192,
  161: 194,
  162: 199,
  163: 200,
  164: 202,
  165: 203,
  166: 235,
  167: 206,
  168: 207,
  169: 239,
  170: 212,
  171: 217,
  172: 249,
  173: 219,
  174: 171,
  175: 187,
  176: 195,
  177: 227,
  178: 205,
  179: 204,
  180: 236,
  181: 210,
  182: 242,
  183: 213,
  184: 245,
  185: 123,
  186: 125,
  187: 92,
  188: 94,
  189: 95,
  190: 124,
  191: 8764,
  192: 196,
  193: 228,
  194: 214,
  195: 246,
  196: 223,
  197: 165,
  198: 164,
  199: 9475,
  200: 197,
  201: 229,
  202: 216,
  203: 248,
  204: 9487,
  205: 9491,
  206: 9495,
  207: 9499
};
var getCharForByte = (byte) => String.fromCharCode(specialCea608CharsCodes[byte] || byte);
var NR_ROWS = 15;
var NR_COLS = 100;
var rowsLowCh1 = {
  17: 1,
  18: 3,
  21: 5,
  22: 7,
  23: 9,
  16: 11,
  19: 12,
  20: 14
};
var rowsHighCh1 = {
  17: 2,
  18: 4,
  21: 6,
  22: 8,
  23: 10,
  19: 13,
  20: 15
};
var rowsLowCh2 = {
  25: 1,
  26: 3,
  29: 5,
  30: 7,
  31: 9,
  24: 11,
  27: 12,
  28: 14
};
var rowsHighCh2 = {
  25: 2,
  26: 4,
  29: 6,
  30: 8,
  31: 10,
  27: 13,
  28: 15
};
var backgroundColors = ["white", "green", "blue", "cyan", "red", "yellow", "magenta", "black", "transparent"];
var CaptionsLogger = class {
  constructor() {
    this.time = null;
    this.verboseLevel = 0;
  }
  log(severity, msg) {
    if (this.verboseLevel >= severity) {
      const m = typeof msg === "function" ? msg() : msg;
      logger.log(`${this.time} [${severity}] ${m}`);
    }
  }
};
var numArrayToHexArray = function numArrayToHexArray2(numArray) {
  const hexArray = [];
  for (let j = 0; j < numArray.length; j++) {
    hexArray.push(numArray[j].toString(16));
  }
  return hexArray;
};
var PenState = class {
  constructor() {
    this.foreground = "white";
    this.underline = false;
    this.italics = false;
    this.background = "black";
    this.flash = false;
  }
  reset() {
    this.foreground = "white";
    this.underline = false;
    this.italics = false;
    this.background = "black";
    this.flash = false;
  }
  setStyles(styles) {
    const attribs = ["foreground", "underline", "italics", "background", "flash"];
    for (let i = 0; i < attribs.length; i++) {
      const style = attribs[i];
      if (styles.hasOwnProperty(style)) {
        this[style] = styles[style];
      }
    }
  }
  isDefault() {
    return this.foreground === "white" && !this.underline && !this.italics && this.background === "black" && !this.flash;
  }
  equals(other) {
    return this.foreground === other.foreground && this.underline === other.underline && this.italics === other.italics && this.background === other.background && this.flash === other.flash;
  }
  copy(newPenState) {
    this.foreground = newPenState.foreground;
    this.underline = newPenState.underline;
    this.italics = newPenState.italics;
    this.background = newPenState.background;
    this.flash = newPenState.flash;
  }
  toString() {
    return "color=" + this.foreground + ", underline=" + this.underline + ", italics=" + this.italics + ", background=" + this.background + ", flash=" + this.flash;
  }
};
var StyledUnicodeChar = class {
  constructor() {
    this.uchar = " ";
    this.penState = new PenState();
  }
  reset() {
    this.uchar = " ";
    this.penState.reset();
  }
  setChar(uchar, newPenState) {
    this.uchar = uchar;
    this.penState.copy(newPenState);
  }
  setPenState(newPenState) {
    this.penState.copy(newPenState);
  }
  equals(other) {
    return this.uchar === other.uchar && this.penState.equals(other.penState);
  }
  copy(newChar) {
    this.uchar = newChar.uchar;
    this.penState.copy(newChar.penState);
  }
  isEmpty() {
    return this.uchar === " " && this.penState.isDefault();
  }
};
var Row = class {
  constructor(logger2) {
    this.chars = [];
    this.pos = 0;
    this.currPenState = new PenState();
    this.cueStartTime = null;
    this.logger = void 0;
    for (let i = 0; i < NR_COLS; i++) {
      this.chars.push(new StyledUnicodeChar());
    }
    this.logger = logger2;
  }
  equals(other) {
    for (let i = 0; i < NR_COLS; i++) {
      if (!this.chars[i].equals(other.chars[i])) {
        return false;
      }
    }
    return true;
  }
  copy(other) {
    for (let i = 0; i < NR_COLS; i++) {
      this.chars[i].copy(other.chars[i]);
    }
  }
  isEmpty() {
    let empty = true;
    for (let i = 0; i < NR_COLS; i++) {
      if (!this.chars[i].isEmpty()) {
        empty = false;
        break;
      }
    }
    return empty;
  }
  setCursor(absPos) {
    if (this.pos !== absPos) {
      this.pos = absPos;
    }
    if (this.pos < 0) {
      this.logger.log(3, "Negative cursor position " + this.pos);
      this.pos = 0;
    } else if (this.pos > NR_COLS) {
      this.logger.log(3, "Too large cursor position " + this.pos);
      this.pos = NR_COLS;
    }
  }
  moveCursor(relPos) {
    const newPos = this.pos + relPos;
    if (relPos > 1) {
      for (let i = this.pos + 1; i < newPos + 1; i++) {
        this.chars[i].setPenState(this.currPenState);
      }
    }
    this.setCursor(newPos);
  }
  backSpace() {
    this.moveCursor(-1);
    this.chars[this.pos].setChar(" ", this.currPenState);
  }
  insertChar(byte) {
    if (byte >= 144) {
      this.backSpace();
    }
    const char = getCharForByte(byte);
    if (this.pos >= NR_COLS) {
      this.logger.log(0, () => "Cannot insert " + byte.toString(16) + " (" + char + ") at position " + this.pos + ". Skipping it!");
      return;
    }
    this.chars[this.pos].setChar(char, this.currPenState);
    this.moveCursor(1);
  }
  clearFromPos(startPos) {
    let i;
    for (i = startPos; i < NR_COLS; i++) {
      this.chars[i].reset();
    }
  }
  clear() {
    this.clearFromPos(0);
    this.pos = 0;
    this.currPenState.reset();
  }
  clearToEndOfRow() {
    this.clearFromPos(this.pos);
  }
  getTextString() {
    const chars = [];
    let empty = true;
    for (let i = 0; i < NR_COLS; i++) {
      const char = this.chars[i].uchar;
      if (char !== " ") {
        empty = false;
      }
      chars.push(char);
    }
    if (empty) {
      return "";
    } else {
      return chars.join("");
    }
  }
  setPenStyles(styles) {
    this.currPenState.setStyles(styles);
    const currChar = this.chars[this.pos];
    currChar.setPenState(this.currPenState);
  }
};
var CaptionScreen = class {
  constructor(logger2) {
    this.rows = [];
    this.currRow = NR_ROWS - 1;
    this.nrRollUpRows = null;
    this.lastOutputScreen = null;
    this.logger = void 0;
    for (let i = 0; i < NR_ROWS; i++) {
      this.rows.push(new Row(logger2));
    }
    this.logger = logger2;
  }
  reset() {
    for (let i = 0; i < NR_ROWS; i++) {
      this.rows[i].clear();
    }
    this.currRow = NR_ROWS - 1;
  }
  equals(other) {
    let equal = true;
    for (let i = 0; i < NR_ROWS; i++) {
      if (!this.rows[i].equals(other.rows[i])) {
        equal = false;
        break;
      }
    }
    return equal;
  }
  copy(other) {
    for (let i = 0; i < NR_ROWS; i++) {
      this.rows[i].copy(other.rows[i]);
    }
  }
  isEmpty() {
    let empty = true;
    for (let i = 0; i < NR_ROWS; i++) {
      if (!this.rows[i].isEmpty()) {
        empty = false;
        break;
      }
    }
    return empty;
  }
  backSpace() {
    const row = this.rows[this.currRow];
    row.backSpace();
  }
  clearToEndOfRow() {
    const row = this.rows[this.currRow];
    row.clearToEndOfRow();
  }
  insertChar(char) {
    const row = this.rows[this.currRow];
    row.insertChar(char);
  }
  setPen(styles) {
    const row = this.rows[this.currRow];
    row.setPenStyles(styles);
  }
  moveCursor(relPos) {
    const row = this.rows[this.currRow];
    row.moveCursor(relPos);
  }
  setCursor(absPos) {
    this.logger.log(2, "setCursor: " + absPos);
    const row = this.rows[this.currRow];
    row.setCursor(absPos);
  }
  setPAC(pacData) {
    this.logger.log(2, () => "pacData = " + stringify(pacData));
    let newRow = pacData.row - 1;
    if (this.nrRollUpRows && newRow < this.nrRollUpRows - 1) {
      newRow = this.nrRollUpRows - 1;
    }
    if (this.nrRollUpRows && this.currRow !== newRow) {
      for (let i = 0; i < NR_ROWS; i++) {
        this.rows[i].clear();
      }
      const topRowIndex = this.currRow + 1 - this.nrRollUpRows;
      const lastOutputScreen = this.lastOutputScreen;
      if (lastOutputScreen) {
        const prevLineTime = lastOutputScreen.rows[topRowIndex].cueStartTime;
        const time = this.logger.time;
        if (prevLineTime !== null && time !== null && prevLineTime < time) {
          for (let i = 0; i < this.nrRollUpRows; i++) {
            this.rows[newRow - this.nrRollUpRows + i + 1].copy(lastOutputScreen.rows[topRowIndex + i]);
          }
        }
      }
    }
    this.currRow = newRow;
    const row = this.rows[this.currRow];
    if (pacData.indent !== null) {
      const indent = pacData.indent;
      const prevPos = Math.max(indent - 1, 0);
      row.setCursor(pacData.indent);
      pacData.color = row.chars[prevPos].penState.foreground;
    }
    const styles = {
      foreground: pacData.color,
      underline: pacData.underline,
      italics: pacData.italics,
      background: "black",
      flash: false
    };
    this.setPen(styles);
  }
  setBkgData(bkgData) {
    this.logger.log(2, () => "bkgData = " + stringify(bkgData));
    this.backSpace();
    this.setPen(bkgData);
    this.insertChar(32);
  }
  setRollUpRows(nrRows) {
    this.nrRollUpRows = nrRows;
  }
  rollUp() {
    if (this.nrRollUpRows === null) {
      this.logger.log(3, "roll_up but nrRollUpRows not set yet");
      return;
    }
    this.logger.log(1, () => this.getDisplayText());
    const topRowIndex = this.currRow + 1 - this.nrRollUpRows;
    const topRow = this.rows.splice(topRowIndex, 1)[0];
    topRow.clear();
    this.rows.splice(this.currRow, 0, topRow);
    this.logger.log(2, "Rolling up");
  }
  getDisplayText(asOneRow) {
    asOneRow = asOneRow || false;
    const displayText = [];
    let text = "";
    let rowNr = -1;
    for (let i = 0; i < NR_ROWS; i++) {
      const rowText = this.rows[i].getTextString();
      if (rowText) {
        rowNr = i + 1;
        if (asOneRow) {
          displayText.push("Row " + rowNr + ": '" + rowText + "'");
        } else {
          displayText.push(rowText.trim());
        }
      }
    }
    if (displayText.length > 0) {
      if (asOneRow) {
        text = "[" + displayText.join(" | ") + "]";
      } else {
        text = displayText.join("\n");
      }
    }
    return text;
  }
  getTextAndFormat() {
    return this.rows;
  }
};
var Cea608Channel = class {
  constructor(channelNumber, outputFilter, logger2) {
    this.chNr = void 0;
    this.outputFilter = void 0;
    this.mode = void 0;
    this.verbose = void 0;
    this.displayedMemory = void 0;
    this.nonDisplayedMemory = void 0;
    this.lastOutputScreen = void 0;
    this.currRollUpRow = void 0;
    this.writeScreen = void 0;
    this.cueStartTime = void 0;
    this.logger = void 0;
    this.chNr = channelNumber;
    this.outputFilter = outputFilter;
    this.mode = null;
    this.verbose = 0;
    this.displayedMemory = new CaptionScreen(logger2);
    this.nonDisplayedMemory = new CaptionScreen(logger2);
    this.lastOutputScreen = new CaptionScreen(logger2);
    this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
    this.writeScreen = this.displayedMemory;
    this.mode = null;
    this.cueStartTime = null;
    this.logger = logger2;
  }
  reset() {
    this.mode = null;
    this.displayedMemory.reset();
    this.nonDisplayedMemory.reset();
    this.lastOutputScreen.reset();
    this.outputFilter.reset();
    this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
    this.writeScreen = this.displayedMemory;
    this.mode = null;
    this.cueStartTime = null;
  }
  getHandler() {
    return this.outputFilter;
  }
  setHandler(newHandler) {
    this.outputFilter = newHandler;
  }
  setPAC(pacData) {
    this.writeScreen.setPAC(pacData);
  }
  setBkgData(bkgData) {
    this.writeScreen.setBkgData(bkgData);
  }
  setMode(newMode) {
    if (newMode === this.mode) {
      return;
    }
    this.mode = newMode;
    this.logger.log(2, () => "MODE=" + newMode);
    if (this.mode === "MODE_POP-ON") {
      this.writeScreen = this.nonDisplayedMemory;
    } else {
      this.writeScreen = this.displayedMemory;
      this.writeScreen.reset();
    }
    if (this.mode !== "MODE_ROLL-UP") {
      this.displayedMemory.nrRollUpRows = null;
      this.nonDisplayedMemory.nrRollUpRows = null;
    }
    this.mode = newMode;
  }
  insertChars(chars) {
    for (let i = 0; i < chars.length; i++) {
      this.writeScreen.insertChar(chars[i]);
    }
    const screen = this.writeScreen === this.displayedMemory ? "DISP" : "NON_DISP";
    this.logger.log(2, () => screen + ": " + this.writeScreen.getDisplayText(true));
    if (this.mode === "MODE_PAINT-ON" || this.mode === "MODE_ROLL-UP") {
      this.logger.log(1, () => "DISPLAYED: " + this.displayedMemory.getDisplayText(true));
      this.outputDataUpdate();
    }
  }
  ccRCL() {
    this.logger.log(2, "RCL - Resume Caption Loading");
    this.setMode("MODE_POP-ON");
  }
  ccBS() {
    this.logger.log(2, "BS - BackSpace");
    if (this.mode === "MODE_TEXT") {
      return;
    }
    this.writeScreen.backSpace();
    if (this.writeScreen === this.displayedMemory) {
      this.outputDataUpdate();
    }
  }
  ccAOF() {
  }
  ccAON() {
  }
  ccDER() {
    this.logger.log(2, "DER- Delete to End of Row");
    this.writeScreen.clearToEndOfRow();
    this.outputDataUpdate();
  }
  ccRU(nrRows) {
    this.logger.log(2, "RU(" + nrRows + ") - Roll Up");
    this.writeScreen = this.displayedMemory;
    this.setMode("MODE_ROLL-UP");
    this.writeScreen.setRollUpRows(nrRows);
  }
  ccFON() {
    this.logger.log(2, "FON - Flash On");
    this.writeScreen.setPen({
      flash: true
    });
  }
  ccRDC() {
    this.logger.log(2, "RDC - Resume Direct Captioning");
    this.setMode("MODE_PAINT-ON");
  }
  ccTR() {
    this.logger.log(2, "TR");
    this.setMode("MODE_TEXT");
  }
  ccRTD() {
    this.logger.log(2, "RTD");
    this.setMode("MODE_TEXT");
  }
  ccEDM() {
    this.logger.log(2, "EDM - Erase Displayed Memory");
    this.displayedMemory.reset();
    this.outputDataUpdate(true);
  }
  ccCR() {
    this.logger.log(2, "CR - Carriage Return");
    this.writeScreen.rollUp();
    this.outputDataUpdate(true);
  }
  ccENM() {
    this.logger.log(2, "ENM - Erase Non-displayed Memory");
    this.nonDisplayedMemory.reset();
  }
  ccEOC() {
    this.logger.log(2, "EOC - End Of Caption");
    if (this.mode === "MODE_POP-ON") {
      const tmp = this.displayedMemory;
      this.displayedMemory = this.nonDisplayedMemory;
      this.nonDisplayedMemory = tmp;
      this.writeScreen = this.nonDisplayedMemory;
      this.logger.log(1, () => "DISP: " + this.displayedMemory.getDisplayText());
    }
    this.outputDataUpdate(true);
  }
  ccTO(nrCols) {
    this.logger.log(2, "TO(" + nrCols + ") - Tab Offset");
    this.writeScreen.moveCursor(nrCols);
  }
  ccMIDROW(secondByte) {
    const styles = {
      flash: false
    };
    styles.underline = secondByte % 2 === 1;
    styles.italics = secondByte >= 46;
    if (!styles.italics) {
      const colorIndex = Math.floor(secondByte / 2) - 16;
      const colors = ["white", "green", "blue", "cyan", "red", "yellow", "magenta"];
      styles.foreground = colors[colorIndex];
    } else {
      styles.foreground = "white";
    }
    this.logger.log(2, "MIDROW: " + stringify(styles));
    this.writeScreen.setPen(styles);
  }
  outputDataUpdate(dispatch = false) {
    const time = this.logger.time;
    if (time === null) {
      return;
    }
    if (this.outputFilter) {
      if (this.cueStartTime === null && !this.displayedMemory.isEmpty()) {
        this.cueStartTime = time;
      } else {
        if (!this.displayedMemory.equals(this.lastOutputScreen)) {
          this.outputFilter.newCue(this.cueStartTime, time, this.lastOutputScreen);
          if (dispatch && this.outputFilter.dispatchCue) {
            this.outputFilter.dispatchCue();
          }
          this.cueStartTime = this.displayedMemory.isEmpty() ? null : time;
        }
      }
      this.lastOutputScreen.copy(this.displayedMemory);
    }
  }
  cueSplitAtTime(t) {
    if (this.outputFilter) {
      if (!this.displayedMemory.isEmpty()) {
        if (this.outputFilter.newCue) {
          this.outputFilter.newCue(this.cueStartTime, t, this.displayedMemory);
        }
        this.cueStartTime = t;
      }
    }
  }
};
var Cea608Parser = class {
  constructor(field, out1, out2) {
    this.channels = void 0;
    this.currentChannel = 0;
    this.cmdHistory = createCmdHistory();
    this.logger = void 0;
    const logger2 = this.logger = new CaptionsLogger();
    this.channels = [null, new Cea608Channel(field, out1, logger2), new Cea608Channel(field + 1, out2, logger2)];
  }
  getHandler(channel) {
    return this.channels[channel].getHandler();
  }
  setHandler(channel, newHandler) {
    this.channels[channel].setHandler(newHandler);
  }
  addData(time, byteList) {
    this.logger.time = time;
    for (let i = 0; i < byteList.length; i += 2) {
      const a = byteList[i] & 127;
      const b = byteList[i + 1] & 127;
      let cmdFound = false;
      let charsFound = null;
      if (a === 0 && b === 0) {
        continue;
      } else {
        this.logger.log(3, () => "[" + numArrayToHexArray([byteList[i], byteList[i + 1]]) + "] -> (" + numArrayToHexArray([a, b]) + ")");
      }
      const cmdHistory = this.cmdHistory;
      const isControlCode = a >= 16 && a <= 31;
      if (isControlCode) {
        if (hasCmdRepeated(a, b, cmdHistory)) {
          setLastCmd(null, null, cmdHistory);
          this.logger.log(3, () => "Repeated command (" + numArrayToHexArray([a, b]) + ") is dropped");
          continue;
        }
        setLastCmd(a, b, this.cmdHistory);
        cmdFound = this.parseCmd(a, b);
        if (!cmdFound) {
          cmdFound = this.parseMidrow(a, b);
        }
        if (!cmdFound) {
          cmdFound = this.parsePAC(a, b);
        }
        if (!cmdFound) {
          cmdFound = this.parseBackgroundAttributes(a, b);
        }
      } else {
        setLastCmd(null, null, cmdHistory);
      }
      if (!cmdFound) {
        charsFound = this.parseChars(a, b);
        if (charsFound) {
          const currChNr = this.currentChannel;
          if (currChNr && currChNr > 0) {
            const channel = this.channels[currChNr];
            channel.insertChars(charsFound);
          } else {
            this.logger.log(2, "No channel found yet. TEXT-MODE?");
          }
        }
      }
      if (!cmdFound && !charsFound) {
        this.logger.log(2, () => "Couldn't parse cleaned data " + numArrayToHexArray([a, b]) + " orig: " + numArrayToHexArray([byteList[i], byteList[i + 1]]));
      }
    }
  }
  parseCmd(a, b) {
    const cond1 = (a === 20 || a === 28 || a === 21 || a === 29) && b >= 32 && b <= 47;
    const cond2 = (a === 23 || a === 31) && b >= 33 && b <= 35;
    if (!(cond1 || cond2)) {
      return false;
    }
    const chNr = a === 20 || a === 21 || a === 23 ? 1 : 2;
    const channel = this.channels[chNr];
    if (a === 20 || a === 21 || a === 28 || a === 29) {
      if (b === 32) {
        channel.ccRCL();
      } else if (b === 33) {
        channel.ccBS();
      } else if (b === 34) {
        channel.ccAOF();
      } else if (b === 35) {
        channel.ccAON();
      } else if (b === 36) {
        channel.ccDER();
      } else if (b === 37) {
        channel.ccRU(2);
      } else if (b === 38) {
        channel.ccRU(3);
      } else if (b === 39) {
        channel.ccRU(4);
      } else if (b === 40) {
        channel.ccFON();
      } else if (b === 41) {
        channel.ccRDC();
      } else if (b === 42) {
        channel.ccTR();
      } else if (b === 43) {
        channel.ccRTD();
      } else if (b === 44) {
        channel.ccEDM();
      } else if (b === 45) {
        channel.ccCR();
      } else if (b === 46) {
        channel.ccENM();
      } else if (b === 47) {
        channel.ccEOC();
      }
    } else {
      channel.ccTO(b - 32);
    }
    this.currentChannel = chNr;
    return true;
  }
  parseMidrow(a, b) {
    let chNr = 0;
    if ((a === 17 || a === 25) && b >= 32 && b <= 47) {
      if (a === 17) {
        chNr = 1;
      } else {
        chNr = 2;
      }
      if (chNr !== this.currentChannel) {
        this.logger.log(0, "Mismatch channel in midrow parsing");
        return false;
      }
      const channel = this.channels[chNr];
      if (!channel) {
        return false;
      }
      channel.ccMIDROW(b);
      this.logger.log(3, () => "MIDROW (" + numArrayToHexArray([a, b]) + ")");
      return true;
    }
    return false;
  }
  parsePAC(a, b) {
    let row;
    const case1 = (a >= 17 && a <= 23 || a >= 25 && a <= 31) && b >= 64 && b <= 127;
    const case2 = (a === 16 || a === 24) && b >= 64 && b <= 95;
    if (!(case1 || case2)) {
      return false;
    }
    const chNr = a <= 23 ? 1 : 2;
    if (b >= 64 && b <= 95) {
      row = chNr === 1 ? rowsLowCh1[a] : rowsLowCh2[a];
    } else {
      row = chNr === 1 ? rowsHighCh1[a] : rowsHighCh2[a];
    }
    const channel = this.channels[chNr];
    if (!channel) {
      return false;
    }
    channel.setPAC(this.interpretPAC(row, b));
    this.currentChannel = chNr;
    return true;
  }
  interpretPAC(row, byte) {
    let pacIndex;
    const pacData = {
      color: null,
      italics: false,
      indent: null,
      underline: false,
      row
    };
    if (byte > 95) {
      pacIndex = byte - 96;
    } else {
      pacIndex = byte - 64;
    }
    pacData.underline = (pacIndex & 1) === 1;
    if (pacIndex <= 13) {
      pacData.color = ["white", "green", "blue", "cyan", "red", "yellow", "magenta", "white"][Math.floor(pacIndex / 2)];
    } else if (pacIndex <= 15) {
      pacData.italics = true;
      pacData.color = "white";
    } else {
      pacData.indent = Math.floor((pacIndex - 16) / 2) * 4;
    }
    return pacData;
  }
  parseChars(a, b) {
    let channelNr;
    let charCodes = null;
    let charCode1 = null;
    if (a >= 25) {
      channelNr = 2;
      charCode1 = a - 8;
    } else {
      channelNr = 1;
      charCode1 = a;
    }
    if (charCode1 >= 17 && charCode1 <= 19) {
      let oneCode;
      if (charCode1 === 17) {
        oneCode = b + 80;
      } else if (charCode1 === 18) {
        oneCode = b + 112;
      } else {
        oneCode = b + 144;
      }
      this.logger.log(2, () => "Special char '" + getCharForByte(oneCode) + "' in channel " + channelNr);
      charCodes = [oneCode];
    } else if (a >= 32 && a <= 127) {
      charCodes = b === 0 ? [a] : [a, b];
    }
    if (charCodes) {
      this.logger.log(3, () => "Char codes =  " + numArrayToHexArray(charCodes).join(","));
    }
    return charCodes;
  }
  parseBackgroundAttributes(a, b) {
    const case1 = (a === 16 || a === 24) && b >= 32 && b <= 47;
    const case2 = (a === 23 || a === 31) && b >= 45 && b <= 47;
    if (!(case1 || case2)) {
      return false;
    }
    let index;
    const bkgData = {};
    if (a === 16 || a === 24) {
      index = Math.floor((b - 32) / 2);
      bkgData.background = backgroundColors[index];
      if (b % 2 === 1) {
        bkgData.background = bkgData.background + "_semi";
      }
    } else if (b === 45) {
      bkgData.background = "transparent";
    } else {
      bkgData.foreground = "black";
      if (b === 47) {
        bkgData.underline = true;
      }
    }
    const chNr = a <= 23 ? 1 : 2;
    const channel = this.channels[chNr];
    channel.setBkgData(bkgData);
    return true;
  }
  reset() {
    for (let i = 0; i < Object.keys(this.channels).length; i++) {
      const channel = this.channels[i];
      if (channel) {
        channel.reset();
      }
    }
    setLastCmd(null, null, this.cmdHistory);
  }
  cueSplitAtTime(t) {
    for (let i = 0; i < this.channels.length; i++) {
      const channel = this.channels[i];
      if (channel) {
        channel.cueSplitAtTime(t);
      }
    }
  }
};
function setLastCmd(a, b, cmdHistory) {
  cmdHistory.a = a;
  cmdHistory.b = b;
}
function hasCmdRepeated(a, b, cmdHistory) {
  return cmdHistory.a === a && cmdHistory.b === b;
}
function createCmdHistory() {
  return {
    a: null,
    b: null
  };
}
var VTTCue = function() {
  if (optionalSelf != null && optionalSelf.VTTCue) {
    return self.VTTCue;
  }
  const AllowedDirections = ["", "lr", "rl"];
  const AllowedAlignments = ["start", "middle", "end", "left", "right"];
  function isAllowedValue(allowed, value) {
    if (typeof value !== "string") {
      return false;
    }
    if (!Array.isArray(allowed)) {
      return false;
    }
    const lcValue = value.toLowerCase();
    if (~allowed.indexOf(lcValue)) {
      return lcValue;
    }
    return false;
  }
  function findDirectionSetting(value) {
    return isAllowedValue(AllowedDirections, value);
  }
  function findAlignSetting(value) {
    return isAllowedValue(AllowedAlignments, value);
  }
  function extend(obj, ...rest) {
    let i = 1;
    for (; i < arguments.length; i++) {
      const cobj = arguments[i];
      for (const p in cobj) {
        obj[p] = cobj[p];
      }
    }
    return obj;
  }
  function VTTCue2(startTime, endTime, text) {
    const cue = this;
    const baseObj = {
      enumerable: true
    };
    cue.hasBeenReset = false;
    let _id = "";
    let _pauseOnExit = false;
    let _startTime = startTime;
    let _endTime = endTime;
    let _text = text;
    let _region = null;
    let _vertical = "";
    let _snapToLines = true;
    let _line = "auto";
    let _lineAlign = "start";
    let _position = 50;
    let _positionAlign = "middle";
    let _size = 50;
    let _align = "middle";
    Object.defineProperty(cue, "id", extend({}, baseObj, {
      get: function() {
        return _id;
      },
      set: function(value) {
        _id = "" + value;
      }
    }));
    Object.defineProperty(cue, "pauseOnExit", extend({}, baseObj, {
      get: function() {
        return _pauseOnExit;
      },
      set: function(value) {
        _pauseOnExit = !!value;
      }
    }));
    Object.defineProperty(cue, "startTime", extend({}, baseObj, {
      get: function() {
        return _startTime;
      },
      set: function(value) {
        if (typeof value !== "number") {
          throw new TypeError("Start time must be set to a number.");
        }
        _startTime = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "endTime", extend({}, baseObj, {
      get: function() {
        return _endTime;
      },
      set: function(value) {
        if (typeof value !== "number") {
          throw new TypeError("End time must be set to a number.");
        }
        _endTime = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "text", extend({}, baseObj, {
      get: function() {
        return _text;
      },
      set: function(value) {
        _text = "" + value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "region", extend({}, baseObj, {
      get: function() {
        return _region;
      },
      set: function(value) {
        _region = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "vertical", extend({}, baseObj, {
      get: function() {
        return _vertical;
      },
      set: function(value) {
        const setting = findDirectionSetting(value);
        if (setting === false) {
          throw new SyntaxError("An invalid or illegal string was specified.");
        }
        _vertical = setting;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "snapToLines", extend({}, baseObj, {
      get: function() {
        return _snapToLines;
      },
      set: function(value) {
        _snapToLines = !!value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "line", extend({}, baseObj, {
      get: function() {
        return _line;
      },
      set: function(value) {
        if (typeof value !== "number" && value !== "auto") {
          throw new SyntaxError("An invalid number or illegal string was specified.");
        }
        _line = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "lineAlign", extend({}, baseObj, {
      get: function() {
        return _lineAlign;
      },
      set: function(value) {
        const setting = findAlignSetting(value);
        if (!setting) {
          throw new SyntaxError("An invalid or illegal string was specified.");
        }
        _lineAlign = setting;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "position", extend({}, baseObj, {
      get: function() {
        return _position;
      },
      set: function(value) {
        if (value < 0 || value > 100) {
          throw new Error("Position must be between 0 and 100.");
        }
        _position = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "positionAlign", extend({}, baseObj, {
      get: function() {
        return _positionAlign;
      },
      set: function(value) {
        const setting = findAlignSetting(value);
        if (!setting) {
          throw new SyntaxError("An invalid or illegal string was specified.");
        }
        _positionAlign = setting;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "size", extend({}, baseObj, {
      get: function() {
        return _size;
      },
      set: function(value) {
        if (value < 0 || value > 100) {
          throw new Error("Size must be between 0 and 100.");
        }
        _size = value;
        this.hasBeenReset = true;
      }
    }));
    Object.defineProperty(cue, "align", extend({}, baseObj, {
      get: function() {
        return _align;
      },
      set: function(value) {
        const setting = findAlignSetting(value);
        if (!setting) {
          throw new SyntaxError("An invalid or illegal string was specified.");
        }
        _align = setting;
        this.hasBeenReset = true;
      }
    }));
    cue.displayState = void 0;
  }
  VTTCue2.prototype.getCueAsHTML = function() {
    const WebVTT = self.WebVTT;
    return WebVTT.convertCueToDOMTree(self, this.text);
  };
  return VTTCue2;
}();
var StringDecoder = class {
  decode(data, options) {
    if (!data) {
      return "";
    }
    if (typeof data !== "string") {
      throw new Error("Error - expected string data.");
    }
    return decodeURIComponent(encodeURIComponent(data));
  }
};
function parseTimeStamp(input) {
  function computeSeconds(h, m2, s, f) {
    return (h | 0) * 3600 + (m2 | 0) * 60 + (s | 0) + parseFloat(f || 0);
  }
  const m = input.match(/^(?:(\d+):)?(\d{2}):(\d{2})(\.\d+)?/);
  if (!m) {
    return null;
  }
  if (parseFloat(m[2]) > 59) {
    return computeSeconds(m[2], m[3], 0, m[4]);
  }
  return computeSeconds(m[1], m[2], m[3], m[4]);
}
var Settings = class {
  constructor() {
    this.values = /* @__PURE__ */ Object.create(null);
  }
  set(k, v) {
    if (!this.get(k) && v !== "") {
      this.values[k] = v;
    }
  }
  get(k, dflt, defaultKey) {
    if (defaultKey) {
      return this.has(k) ? this.values[k] : dflt[defaultKey];
    }
    return this.has(k) ? this.values[k] : dflt;
  }
  has(k) {
    return k in this.values;
  }
  alt(k, v, a) {
    for (let n = 0; n < a.length; ++n) {
      if (v === a[n]) {
        this.set(k, v);
        break;
      }
    }
  }
  integer(k, v) {
    if (/^-?\d+$/.test(v)) {
      this.set(k, parseInt(v, 10));
    }
  }
  percent(k, v) {
    if (/^([\d]{1,3})(\.[\d]*)?%$/.test(v)) {
      const percent = parseFloat(v);
      if (percent >= 0 && percent <= 100) {
        this.set(k, percent);
        return true;
      }
    }
    return false;
  }
};
function parseOptions(input, callback, keyValueDelim, groupDelim) {
  const groups = groupDelim ? input.split(groupDelim) : [input];
  for (const i in groups) {
    if (typeof groups[i] !== "string") {
      continue;
    }
    const kv = groups[i].split(keyValueDelim);
    if (kv.length !== 2) {
      continue;
    }
    const k = kv[0];
    const v = kv[1];
    callback(k, v);
  }
}
var defaults = new VTTCue(0, 0, "");
var center = defaults.align === "middle" ? "middle" : "center";
function parseCue(input, cue, regionList) {
  const oInput = input;
  function consumeTimeStamp() {
    const ts = parseTimeStamp(input);
    if (ts === null) {
      throw new Error("Malformed timestamp: " + oInput);
    }
    input = input.replace(/^[^\sa-zA-Z-]+/, "");
    return ts;
  }
  function consumeCueSettings(input2, cue2) {
    const settings = new Settings();
    parseOptions(input2, function(k, v) {
      let vals;
      switch (k) {
        case "region":
          for (let i = regionList.length - 1; i >= 0; i--) {
            if (regionList[i].id === v) {
              settings.set(k, regionList[i].region);
              break;
            }
          }
          break;
        case "vertical":
          settings.alt(k, v, ["rl", "lr"]);
          break;
        case "line":
          vals = v.split(",");
          settings.integer(k, vals[0]);
          if (settings.percent(k, vals[0])) {
            settings.set("snapToLines", false);
          }
          settings.alt(k, vals[0], ["auto"]);
          if (vals.length === 2) {
            settings.alt("lineAlign", vals[1], ["start", center, "end"]);
          }
          break;
        case "position":
          vals = v.split(",");
          settings.percent(k, vals[0]);
          if (vals.length === 2) {
            settings.alt("positionAlign", vals[1], ["start", center, "end", "line-left", "line-right", "auto"]);
          }
          break;
        case "size":
          settings.percent(k, v);
          break;
        case "align":
          settings.alt(k, v, ["start", center, "end", "left", "right"]);
          break;
      }
    }, /:/, /\s/);
    cue2.region = settings.get("region", null);
    cue2.vertical = settings.get("vertical", "");
    let line = settings.get("line", "auto");
    if (line === "auto" && defaults.line === -1) {
      line = -1;
    }
    cue2.line = line;
    cue2.lineAlign = settings.get("lineAlign", "start");
    cue2.snapToLines = settings.get("snapToLines", true);
    cue2.size = settings.get("size", 100);
    cue2.align = settings.get("align", center);
    let position = settings.get("position", "auto");
    if (position === "auto" && defaults.position === 50) {
      position = cue2.align === "start" || cue2.align === "left" ? 0 : cue2.align === "end" || cue2.align === "right" ? 100 : 50;
    }
    cue2.position = position;
  }
  function skipWhitespace() {
    input = input.replace(/^\s+/, "");
  }
  skipWhitespace();
  cue.startTime = consumeTimeStamp();
  skipWhitespace();
  if (input.slice(0, 3) !== "-->") {
    throw new Error("Malformed time stamp (time stamps must be separated by '-->'): " + oInput);
  }
  input = input.slice(3);
  skipWhitespace();
  cue.endTime = consumeTimeStamp();
  skipWhitespace();
  consumeCueSettings(input, cue);
}
function fixLineBreaks(input) {
  return input.replace(/<br(?: \/)?>/gi, "\n");
}
var VTTParser = class {
  constructor() {
    this.state = "INITIAL";
    this.buffer = "";
    this.decoder = new StringDecoder();
    this.regionList = [];
    this.cue = null;
    this.oncue = void 0;
    this.onparsingerror = void 0;
    this.onflush = void 0;
  }
  parse(data) {
    const _this = this;
    if (data) {
      _this.buffer += _this.decoder.decode(data, {
        stream: true
      });
    }
    function collectNextLine() {
      let buffer = _this.buffer;
      let pos = 0;
      buffer = fixLineBreaks(buffer);
      while (pos < buffer.length && buffer[pos] !== "\r" && buffer[pos] !== "\n") {
        ++pos;
      }
      const line = buffer.slice(0, pos);
      if (buffer[pos] === "\r") {
        ++pos;
      }
      if (buffer[pos] === "\n") {
        ++pos;
      }
      _this.buffer = buffer.slice(pos);
      return line;
    }
    function parseHeader2(input) {
      parseOptions(input, function(k, v) {
      }, /:/);
    }
    try {
      let line = "";
      if (_this.state === "INITIAL") {
        if (!/\r\n|\n/.test(_this.buffer)) {
          return this;
        }
        line = collectNextLine();
        const m = line.match(/^()?WEBVTT([ \t].*)?$/);
        if (!(m != null && m[0])) {
          throw new Error("Malformed WebVTT signature.");
        }
        _this.state = "HEADER";
      }
      let alreadyCollectedLine = false;
      while (_this.buffer) {
        if (!/\r\n|\n/.test(_this.buffer)) {
          return this;
        }
        if (!alreadyCollectedLine) {
          line = collectNextLine();
        } else {
          alreadyCollectedLine = false;
        }
        switch (_this.state) {
          case "HEADER":
            if (/:/.test(line)) {
              parseHeader2(line);
            } else if (!line) {
              _this.state = "ID";
            }
            continue;
          case "NOTE":
            if (!line) {
              _this.state = "ID";
            }
            continue;
          case "ID":
            if (/^NOTE($|[ \t])/.test(line)) {
              _this.state = "NOTE";
              break;
            }
            if (!line) {
              continue;
            }
            _this.cue = new VTTCue(0, 0, "");
            _this.state = "CUE";
            if (line.indexOf("-->") === -1) {
              _this.cue.id = line;
              continue;
            }
          case "CUE":
            if (!_this.cue) {
              _this.state = "BADCUE";
              continue;
            }
            try {
              parseCue(line, _this.cue, _this.regionList);
            } catch (e) {
              _this.cue = null;
              _this.state = "BADCUE";
              continue;
            }
            _this.state = "CUETEXT";
            continue;
          case "CUETEXT":
            {
              const hasSubstring = line.indexOf("-->") !== -1;
              if (!line || hasSubstring && (alreadyCollectedLine = true)) {
                if (_this.oncue && _this.cue) {
                  _this.oncue(_this.cue);
                }
                _this.cue = null;
                _this.state = "ID";
                continue;
              }
              if (_this.cue === null) {
                continue;
              }
              if (_this.cue.text) {
                _this.cue.text += "\n";
              }
              _this.cue.text += line;
            }
            continue;
          case "BADCUE":
            if (!line) {
              _this.state = "ID";
            }
        }
      }
    } catch (e) {
      if (_this.state === "CUETEXT" && _this.cue && _this.oncue) {
        _this.oncue(_this.cue);
      }
      _this.cue = null;
      _this.state = _this.state === "INITIAL" ? "BADWEBVTT" : "BADCUE";
    }
    return this;
  }
  flush() {
    const _this = this;
    try {
      if (_this.cue || _this.state === "HEADER") {
        _this.buffer += "\n\n";
        _this.parse();
      }
      if (_this.state === "INITIAL" || _this.state === "BADWEBVTT") {
        throw new Error("Malformed WebVTT signature.");
      }
    } catch (e) {
      if (_this.onparsingerror) {
        _this.onparsingerror(e);
      }
    }
    if (_this.onflush) {
      _this.onflush();
    }
    return this;
  }
};
var LINEBREAKS = /\r\n|\n\r|\n|\r/g;
var startsWith = function startsWith2(inputString, searchString, position = 0) {
  return inputString.slice(position, position + searchString.length) === searchString;
};
var cueString2millis = function cueString2millis2(timeString) {
  let ts = parseInt(timeString.slice(-3));
  const secs = parseInt(timeString.slice(-6, -4));
  const mins = parseInt(timeString.slice(-9, -7));
  const hours = timeString.length > 9 ? parseInt(timeString.substring(0, timeString.indexOf(":"))) : 0;
  if (!isFiniteNumber(ts) || !isFiniteNumber(secs) || !isFiniteNumber(mins) || !isFiniteNumber(hours)) {
    throw Error(`Malformed X-TIMESTAMP-MAP: Local:${timeString}`);
  }
  ts += 1e3 * secs;
  ts += 60 * 1e3 * mins;
  ts += 60 * 60 * 1e3 * hours;
  return ts;
};
function generateCueId(startTime, endTime, text) {
  return hash(startTime.toString()) + hash(endTime.toString()) + hash(text);
}
var calculateOffset = function calculateOffset2(vttCCs, cc, presentationTime) {
  let currCC = vttCCs[cc];
  let prevCC = vttCCs[currCC.prevCC];
  if (!prevCC || !prevCC.new && currCC.new) {
    vttCCs.ccOffset = vttCCs.presentationOffset = currCC.start;
    currCC.new = false;
    return;
  }
  while ((_prevCC = prevCC) != null && _prevCC.new) {
    var _prevCC;
    vttCCs.ccOffset += currCC.start - prevCC.start;
    currCC.new = false;
    currCC = prevCC;
    prevCC = vttCCs[currCC.prevCC];
  }
  vttCCs.presentationOffset = presentationTime;
};
function parseWebVTT(vttByteArray, initPTS, vttCCs, cc, timeOffset, callBack, errorCallBack) {
  const parser = new VTTParser();
  const vttLines = utf8ArrayToStr(new Uint8Array(vttByteArray)).trim().replace(LINEBREAKS, "\n").split("\n");
  const cues = [];
  const init90kHz = initPTS ? toMpegTsClockFromTimescale(initPTS.baseTime, initPTS.timescale) : 0;
  let cueTime = "00:00.000";
  let timestampMapMPEGTS = 0;
  let timestampMapLOCAL = 0;
  let parsingError;
  let inHeader = true;
  parser.oncue = function(cue) {
    const currCC = vttCCs[cc];
    let cueOffset = vttCCs.ccOffset;
    const webVttMpegTsMapOffset = (timestampMapMPEGTS - init90kHz) / 9e4;
    if (currCC != null && currCC.new) {
      if (timestampMapLOCAL !== void 0) {
        cueOffset = vttCCs.ccOffset = currCC.start;
      } else {
        calculateOffset(vttCCs, cc, webVttMpegTsMapOffset);
      }
    }
    if (webVttMpegTsMapOffset) {
      if (!initPTS) {
        parsingError = new Error("Missing initPTS for VTT MPEGTS");
        return;
      }
      cueOffset = webVttMpegTsMapOffset - vttCCs.presentationOffset;
    }
    const duration = cue.endTime - cue.startTime;
    const startTime = normalizePts((cue.startTime + cueOffset - timestampMapLOCAL) * 9e4, timeOffset * 9e4) / 9e4;
    cue.startTime = Math.max(startTime, 0);
    cue.endTime = Math.max(startTime + duration, 0);
    const text = cue.text.trim();
    cue.text = decodeURIComponent(encodeURIComponent(text));
    if (!cue.id) {
      cue.id = generateCueId(cue.startTime, cue.endTime, text);
    }
    if (cue.endTime > 0) {
      cues.push(cue);
    }
  };
  parser.onparsingerror = function(error) {
    parsingError = error;
  };
  parser.onflush = function() {
    if (parsingError) {
      errorCallBack(parsingError);
      return;
    }
    callBack(cues);
  };
  vttLines.forEach((line) => {
    if (inHeader) {
      if (startsWith(line, "X-TIMESTAMP-MAP=")) {
        inHeader = false;
        line.slice(16).split(",").forEach((timestamp) => {
          if (startsWith(timestamp, "LOCAL:")) {
            cueTime = timestamp.slice(6);
          } else if (startsWith(timestamp, "MPEGTS:")) {
            timestampMapMPEGTS = parseInt(timestamp.slice(7));
          }
        });
        try {
          timestampMapLOCAL = cueString2millis(cueTime) / 1e3;
        } catch (error) {
          parsingError = error;
        }
        return;
      } else if (line === "") {
        inHeader = false;
      }
    }
    parser.parse(line + "\n");
  });
  parser.flush();
}
var IMSC1_CODEC = "stpp.ttml.im1t";
var HMSF_REGEX = /^(\d{2,}):(\d{2}):(\d{2}):(\d{2})\.?(\d+)?$/;
var TIME_UNIT_REGEX = /^(\d*(?:\.\d*)?)(h|m|s|ms|f|t)$/;
var textAlignToLineAlign = {
  left: "start",
  center: "center",
  right: "end",
  start: "start",
  end: "end"
};
function parseIMSC1(payload, initPTS, callBack, errorCallBack) {
  const results = findBox(new Uint8Array(payload), ["mdat"]);
  if (results.length === 0) {
    errorCallBack(new Error("Could not parse IMSC1 mdat"));
    return;
  }
  const ttmlList = results.map((mdat) => utf8ArrayToStr(mdat));
  const syncTime = toTimescaleFromScale(initPTS.baseTime, 1, initPTS.timescale);
  try {
    ttmlList.forEach((ttml) => callBack(parseTTML(ttml, syncTime)));
  } catch (error) {
    errorCallBack(error);
  }
}
function parseTTML(ttml, syncTime) {
  const parser = new DOMParser();
  const xmlDoc = parser.parseFromString(ttml, "text/xml");
  const tt = xmlDoc.getElementsByTagName("tt")[0];
  if (!tt) {
    throw new Error("Invalid ttml");
  }
  const defaultRateInfo = {
    frameRate: 30,
    subFrameRate: 1,
    frameRateMultiplier: 0,
    tickRate: 0
  };
  const rateInfo = Object.keys(defaultRateInfo).reduce((result, key) => {
    result[key] = tt.getAttribute(`ttp:${key}`) || defaultRateInfo[key];
    return result;
  }, {});
  const trim = tt.getAttribute("xml:space") !== "preserve";
  const styleElements = collectionToDictionary(getElementCollection(tt, "styling", "style"));
  const regionElements = collectionToDictionary(getElementCollection(tt, "layout", "region"));
  const cueElements = getElementCollection(tt, "body", "[begin]");
  return [].map.call(cueElements, (cueElement) => {
    const cueText = getTextContent(cueElement, trim);
    if (!cueText || !cueElement.hasAttribute("begin")) {
      return null;
    }
    const startTime = parseTtmlTime(cueElement.getAttribute("begin"), rateInfo);
    const duration = parseTtmlTime(cueElement.getAttribute("dur"), rateInfo);
    let endTime = parseTtmlTime(cueElement.getAttribute("end"), rateInfo);
    if (startTime === null) {
      throw timestampParsingError(cueElement);
    }
    if (endTime === null) {
      if (duration === null) {
        throw timestampParsingError(cueElement);
      }
      endTime = startTime + duration;
    }
    const cue = new VTTCue(startTime - syncTime, endTime - syncTime, cueText);
    cue.id = generateCueId(cue.startTime, cue.endTime, cue.text);
    const region = regionElements[cueElement.getAttribute("region")];
    const style = styleElements[cueElement.getAttribute("style")];
    const styles = getTtmlStyles(region, style, styleElements);
    const {
      textAlign
    } = styles;
    if (textAlign) {
      const lineAlign = textAlignToLineAlign[textAlign];
      if (lineAlign) {
        cue.lineAlign = lineAlign;
      }
      cue.align = textAlign;
    }
    _extends(cue, styles);
    return cue;
  }).filter((cue) => cue !== null);
}
function getElementCollection(fromElement, parentName, childName) {
  const parent = fromElement.getElementsByTagName(parentName)[0];
  if (parent) {
    return [].slice.call(parent.querySelectorAll(childName));
  }
  return [];
}
function collectionToDictionary(elementsWithId) {
  return elementsWithId.reduce((dict, element) => {
    const id = element.getAttribute("xml:id");
    if (id) {
      dict[id] = element;
    }
    return dict;
  }, {});
}
function getTextContent(element, trim) {
  return [].slice.call(element.childNodes).reduce((str, node, i) => {
    var _node$childNodes;
    if (node.nodeName === "br" && i) {
      return str + "\n";
    }
    if ((_node$childNodes = node.childNodes) != null && _node$childNodes.length) {
      return getTextContent(node, trim);
    } else if (trim) {
      return str + node.textContent.trim().replace(/\s+/g, " ");
    }
    return str + node.textContent;
  }, "");
}
function getTtmlStyles(region, style, styleElements) {
  const ttsNs = "http://www.w3.org/ns/ttml#styling";
  let regionStyle = null;
  const styleAttributes = [
    "displayAlign",
    "textAlign",
    "color",
    "backgroundColor",
    "fontSize",
    "fontFamily"
  ];
  const regionStyleName = region != null && region.hasAttribute("style") ? region.getAttribute("style") : null;
  if (regionStyleName && styleElements.hasOwnProperty(regionStyleName)) {
    regionStyle = styleElements[regionStyleName];
  }
  return styleAttributes.reduce((styles, name) => {
    const value = getAttributeNS(style, ttsNs, name) || getAttributeNS(region, ttsNs, name) || getAttributeNS(regionStyle, ttsNs, name);
    if (value) {
      styles[name] = value;
    }
    return styles;
  }, {});
}
function getAttributeNS(element, ns, name) {
  if (!element) {
    return null;
  }
  return element.hasAttributeNS(ns, name) ? element.getAttributeNS(ns, name) : null;
}
function timestampParsingError(node) {
  return new Error(`Could not parse ttml timestamp ${node}`);
}
function parseTtmlTime(timeAttributeValue, rateInfo) {
  if (!timeAttributeValue) {
    return null;
  }
  let seconds = parseTimeStamp(timeAttributeValue);
  if (seconds === null) {
    if (HMSF_REGEX.test(timeAttributeValue)) {
      seconds = parseHoursMinutesSecondsFrames(timeAttributeValue, rateInfo);
    } else if (TIME_UNIT_REGEX.test(timeAttributeValue)) {
      seconds = parseTimeUnits(timeAttributeValue, rateInfo);
    }
  }
  return seconds;
}
function parseHoursMinutesSecondsFrames(timeAttributeValue, rateInfo) {
  const m = HMSF_REGEX.exec(timeAttributeValue);
  const frames = (m[4] | 0) + (m[5] | 0) / rateInfo.subFrameRate;
  return (m[1] | 0) * 3600 + (m[2] | 0) * 60 + (m[3] | 0) + frames / rateInfo.frameRate;
}
function parseTimeUnits(timeAttributeValue, rateInfo) {
  const m = TIME_UNIT_REGEX.exec(timeAttributeValue);
  const value = Number(m[1]);
  const unit = m[2];
  switch (unit) {
    case "h":
      return value * 3600;
    case "m":
      return value * 60;
    case "ms":
      return value * 1e3;
    case "f":
      return value / rateInfo.frameRate;
    case "t":
      return value / rateInfo.tickRate;
  }
  return value;
}
var OutputFilter = class {
  constructor(timelineController, trackName) {
    this.timelineController = void 0;
    this.cueRanges = [];
    this.trackName = void 0;
    this.startTime = null;
    this.endTime = null;
    this.screen = null;
    this.timelineController = timelineController;
    this.trackName = trackName;
  }
  dispatchCue() {
    if (this.startTime === null) {
      return;
    }
    this.timelineController.addCues(this.trackName, this.startTime, this.endTime, this.screen, this.cueRanges);
    this.startTime = null;
  }
  newCue(startTime, endTime, screen) {
    if (this.startTime === null || this.startTime > startTime) {
      this.startTime = startTime;
    }
    this.endTime = endTime;
    this.screen = screen;
    this.timelineController.createCaptionsTrack(this.trackName);
  }
  reset() {
    this.cueRanges = [];
    this.startTime = null;
  }
};
var TimelineController = class {
  constructor(hls) {
    this.hls = void 0;
    this.media = null;
    this.config = void 0;
    this.enabled = true;
    this.Cues = void 0;
    this.textTracks = [];
    this.tracks = [];
    this.initPTS = [];
    this.unparsedVttFrags = [];
    this.captionsTracks = {};
    this.nonNativeCaptionsTracks = {};
    this.cea608Parser1 = void 0;
    this.cea608Parser2 = void 0;
    this.lastCc = -1;
    this.lastSn = -1;
    this.lastPartIndex = -1;
    this.prevCC = -1;
    this.vttCCs = newVTTCCs();
    this.captionsProperties = void 0;
    this.hls = hls;
    this.config = hls.config;
    this.Cues = hls.config.cueHandler;
    this.captionsProperties = {
      textTrack1: {
        label: this.config.captionsTextTrack1Label,
        languageCode: this.config.captionsTextTrack1LanguageCode
      },
      textTrack2: {
        label: this.config.captionsTextTrack2Label,
        languageCode: this.config.captionsTextTrack2LanguageCode
      },
      textTrack3: {
        label: this.config.captionsTextTrack3Label,
        languageCode: this.config.captionsTextTrack3LanguageCode
      },
      textTrack4: {
        label: this.config.captionsTextTrack4Label,
        languageCode: this.config.captionsTextTrack4LanguageCode
      }
    };
    hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.on(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
    hls.on(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
    hls.on(Events.FRAG_PARSING_USERDATA, this.onFragParsingUserdata, this);
    hls.on(Events.FRAG_DECRYPTED, this.onFragDecrypted, this);
    hls.on(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
    hls.on(Events.SUBTITLE_TRACKS_CLEARED, this.onSubtitleTracksCleared, this);
    hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
  }
  destroy() {
    const {
      hls
    } = this;
    hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.off(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
    hls.off(Events.FRAG_LOADING, this.onFragLoading, this);
    hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
    hls.off(Events.FRAG_PARSING_USERDATA, this.onFragParsingUserdata, this);
    hls.off(Events.FRAG_DECRYPTED, this.onFragDecrypted, this);
    hls.off(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
    hls.off(Events.SUBTITLE_TRACKS_CLEARED, this.onSubtitleTracksCleared, this);
    hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    this.hls = this.config = this.media = null;
    this.cea608Parser1 = this.cea608Parser2 = void 0;
  }
  initCea608Parsers() {
    const channel1 = new OutputFilter(this, "textTrack1");
    const channel2 = new OutputFilter(this, "textTrack2");
    const channel3 = new OutputFilter(this, "textTrack3");
    const channel4 = new OutputFilter(this, "textTrack4");
    this.cea608Parser1 = new Cea608Parser(1, channel1, channel2);
    this.cea608Parser2 = new Cea608Parser(3, channel3, channel4);
  }
  addCues(trackName, startTime, endTime, screen, cueRanges) {
    let merged = false;
    for (let i = cueRanges.length; i--; ) {
      const cueRange = cueRanges[i];
      const overlap = intersection(cueRange[0], cueRange[1], startTime, endTime);
      if (overlap >= 0) {
        cueRange[0] = Math.min(cueRange[0], startTime);
        cueRange[1] = Math.max(cueRange[1], endTime);
        merged = true;
        if (overlap / (endTime - startTime) > 0.5) {
          return;
        }
      }
    }
    if (!merged) {
      cueRanges.push([startTime, endTime]);
    }
    if (this.config.renderTextTracksNatively) {
      const track = this.captionsTracks[trackName];
      this.Cues.newCue(track, startTime, endTime, screen);
    } else {
      const cues = this.Cues.newCue(null, startTime, endTime, screen);
      this.hls.trigger(Events.CUES_PARSED, {
        type: "captions",
        cues,
        track: trackName
      });
    }
  }
  onInitPtsFound(event, {
    frag,
    id,
    initPTS,
    timescale
  }) {
    const {
      unparsedVttFrags
    } = this;
    if (id === PlaylistLevelType.MAIN) {
      this.initPTS[frag.cc] = {
        baseTime: initPTS,
        timescale
      };
    }
    if (unparsedVttFrags.length) {
      this.unparsedVttFrags = [];
      unparsedVttFrags.forEach((data) => {
        if (this.initPTS[data.frag.cc]) {
          this.onFragLoaded(Events.FRAG_LOADED, data);
        } else {
          this.hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
            success: false,
            frag: data.frag,
            error: new Error("Subtitle discontinuity domain does not match main")
          });
        }
      });
    }
  }
  getExistingTrack(label, language) {
    const {
      media
    } = this;
    if (media) {
      for (let i = 0; i < media.textTracks.length; i++) {
        const textTrack = media.textTracks[i];
        if (canReuseVttTextTrack(textTrack, {
          name: label,
          lang: language,
          characteristics: "transcribes-spoken-dialog,describes-music-and-sound"
        })) {
          return textTrack;
        }
      }
    }
    return null;
  }
  createCaptionsTrack(trackName) {
    if (this.config.renderTextTracksNatively) {
      this.createNativeTrack(trackName);
    } else {
      this.createNonNativeTrack(trackName);
    }
  }
  createNativeTrack(trackName) {
    if (this.captionsTracks[trackName]) {
      return;
    }
    const {
      captionsProperties,
      captionsTracks,
      media
    } = this;
    const {
      label,
      languageCode
    } = captionsProperties[trackName];
    const existingTrack = this.getExistingTrack(label, languageCode);
    if (!existingTrack) {
      const textTrack = this.createTextTrack("captions", label, languageCode);
      if (textTrack) {
        textTrack[trackName] = true;
        captionsTracks[trackName] = textTrack;
      }
    } else {
      captionsTracks[trackName] = existingTrack;
      clearCurrentCues(captionsTracks[trackName]);
      sendAddTrackEvent(captionsTracks[trackName], media);
    }
  }
  createNonNativeTrack(trackName) {
    if (this.nonNativeCaptionsTracks[trackName]) {
      return;
    }
    const trackProperties = this.captionsProperties[trackName];
    if (!trackProperties) {
      return;
    }
    const label = trackProperties.label;
    const track = {
      _id: trackName,
      label,
      kind: "captions",
      default: trackProperties.media ? !!trackProperties.media.default : false,
      closedCaptions: trackProperties.media
    };
    this.nonNativeCaptionsTracks[trackName] = track;
    this.hls.trigger(Events.NON_NATIVE_TEXT_TRACKS_FOUND, {
      tracks: [track]
    });
  }
  createTextTrack(kind, label, lang) {
    const media = this.media;
    if (!media) {
      return;
    }
    return media.addTextTrack(kind, label, lang);
  }
  onMediaAttaching(event, data) {
    this.media = data.media;
    if (!data.mediaSource) {
      this._cleanTracks();
    }
  }
  onMediaDetaching(event, data) {
    const transferringMedia = !!data.transferMedia;
    this.media = null;
    if (transferringMedia) {
      return;
    }
    const {
      captionsTracks
    } = this;
    Object.keys(captionsTracks).forEach((trackName) => {
      clearCurrentCues(captionsTracks[trackName]);
      delete captionsTracks[trackName];
    });
    this.nonNativeCaptionsTracks = {};
  }
  onManifestLoading() {
    this.lastCc = -1;
    this.lastSn = -1;
    this.lastPartIndex = -1;
    this.prevCC = -1;
    this.vttCCs = newVTTCCs();
    this._cleanTracks();
    this.tracks = [];
    this.captionsTracks = {};
    this.nonNativeCaptionsTracks = {};
    this.textTracks = [];
    this.unparsedVttFrags = [];
    this.initPTS = [];
    if (this.cea608Parser1 && this.cea608Parser2) {
      this.cea608Parser1.reset();
      this.cea608Parser2.reset();
    }
  }
  _cleanTracks() {
    const {
      media
    } = this;
    if (!media) {
      return;
    }
    const textTracks = media.textTracks;
    if (textTracks) {
      for (let i = 0; i < textTracks.length; i++) {
        clearCurrentCues(textTracks[i]);
      }
    }
  }
  onSubtitleTracksUpdated(event, data) {
    const tracks = data.subtitleTracks || [];
    const hasIMSC1 = tracks.some((track) => track.textCodec === IMSC1_CODEC);
    if (this.config.enableWebVTT || hasIMSC1 && this.config.enableIMSC1) {
      const listIsIdentical = subtitleOptionsIdentical(this.tracks, tracks);
      if (listIsIdentical) {
        this.tracks = tracks;
        return;
      }
      this.textTracks = [];
      this.tracks = tracks;
      if (this.config.renderTextTracksNatively) {
        const media = this.media;
        const inUseTracks = media ? filterSubtitleTracks(media.textTracks) : null;
        this.tracks.forEach((track, index) => {
          let textTrack;
          if (inUseTracks) {
            let inUseTrack = null;
            for (let i = 0; i < inUseTracks.length; i++) {
              if (inUseTracks[i] && canReuseVttTextTrack(inUseTracks[i], track)) {
                inUseTrack = inUseTracks[i];
                inUseTracks[i] = null;
                break;
              }
            }
            if (inUseTrack) {
              textTrack = inUseTrack;
            }
          }
          if (textTrack) {
            clearCurrentCues(textTrack);
          } else {
            const textTrackKind = captionsOrSubtitlesFromCharacteristics(track);
            textTrack = this.createTextTrack(textTrackKind, track.name, track.lang);
            if (textTrack) {
              textTrack.mode = "disabled";
            }
          }
          if (textTrack) {
            this.textTracks.push(textTrack);
          }
        });
        if (inUseTracks != null && inUseTracks.length) {
          const unusedTextTracks = inUseTracks.filter((t) => t !== null).map((t) => t.label);
          if (unusedTextTracks.length) {
            this.hls.logger.warn(`Media element contains unused subtitle tracks: ${unusedTextTracks.join(", ")}. Replace media element for each source to clear TextTracks and captions menu.`);
          }
        }
      } else if (this.tracks.length) {
        const tracksList = this.tracks.map((track) => {
          return {
            label: track.name,
            kind: track.type.toLowerCase(),
            default: track.default,
            subtitleTrack: track
          };
        });
        this.hls.trigger(Events.NON_NATIVE_TEXT_TRACKS_FOUND, {
          tracks: tracksList
        });
      }
    }
  }
  onManifestLoaded(event, data) {
    if (this.config.enableCEA708Captions && data.captions) {
      data.captions.forEach((captionsTrack) => {
        const instreamIdMatch = /(?:CC|SERVICE)([1-4])/.exec(captionsTrack.instreamId);
        if (!instreamIdMatch) {
          return;
        }
        const trackName = `textTrack${instreamIdMatch[1]}`;
        const trackProperties = this.captionsProperties[trackName];
        if (!trackProperties) {
          return;
        }
        trackProperties.label = captionsTrack.name;
        if (captionsTrack.lang) {
          trackProperties.languageCode = captionsTrack.lang;
        }
        trackProperties.media = captionsTrack;
      });
    }
  }
  closedCaptionsForLevel(frag) {
    const level = this.hls.levels[frag.level];
    return level == null ? void 0 : level.attrs["CLOSED-CAPTIONS"];
  }
  onFragLoading(event, data) {
    if (this.enabled && data.frag.type === PlaylistLevelType.MAIN) {
      var _data$part$index, _data$part;
      const {
        cea608Parser1,
        cea608Parser2,
        lastSn
      } = this;
      const {
        cc,
        sn
      } = data.frag;
      const partIndex = (_data$part$index = (_data$part = data.part) == null ? void 0 : _data$part.index) != null ? _data$part$index : -1;
      if (cea608Parser1 && cea608Parser2) {
        if (sn !== lastSn + 1 || sn === lastSn && partIndex !== this.lastPartIndex + 1 || cc !== this.lastCc) {
          cea608Parser1.reset();
          cea608Parser2.reset();
        }
      }
      this.lastCc = cc;
      this.lastSn = sn;
      this.lastPartIndex = partIndex;
    }
  }
  onFragLoaded(event, data) {
    const {
      frag,
      payload
    } = data;
    if (frag.type === PlaylistLevelType.SUBTITLE) {
      if (payload.byteLength) {
        const decryptData = frag.decryptdata;
        const decrypted = "stats" in data;
        if (decryptData == null || !decryptData.encrypted || decrypted) {
          const trackPlaylistMedia = this.tracks[frag.level];
          const vttCCs = this.vttCCs;
          if (!vttCCs[frag.cc]) {
            vttCCs[frag.cc] = {
              start: frag.start,
              prevCC: this.prevCC,
              new: true
            };
            this.prevCC = frag.cc;
          }
          if (trackPlaylistMedia && trackPlaylistMedia.textCodec === IMSC1_CODEC) {
            this._parseIMSC1(frag, payload);
          } else {
            this._parseVTTs(data);
          }
        }
      } else {
        this.hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
          success: false,
          frag,
          error: new Error("Empty subtitle payload")
        });
      }
    }
  }
  _parseIMSC1(frag, payload) {
    const hls = this.hls;
    parseIMSC1(payload, this.initPTS[frag.cc], (cues) => {
      this._appendCues(cues, frag.level);
      hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
        success: true,
        frag
      });
    }, (error) => {
      hls.logger.log(`Failed to parse IMSC1: ${error}`);
      hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
        success: false,
        frag,
        error
      });
    });
  }
  _parseVTTs(data) {
    var _frag$initSegment;
    const {
      frag,
      payload
    } = data;
    const {
      initPTS,
      unparsedVttFrags
    } = this;
    const maxAvCC = initPTS.length - 1;
    if (!initPTS[frag.cc] && maxAvCC === -1) {
      unparsedVttFrags.push(data);
      return;
    }
    const hls = this.hls;
    const payloadWebVTT = (_frag$initSegment = frag.initSegment) != null && _frag$initSegment.data ? appendUint8Array(frag.initSegment.data, new Uint8Array(payload)).buffer : payload;
    parseWebVTT(payloadWebVTT, this.initPTS[frag.cc], this.vttCCs, frag.cc, frag.start, (cues) => {
      this._appendCues(cues, frag.level);
      hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
        success: true,
        frag
      });
    }, (error) => {
      const missingInitPTS = error.message === "Missing initPTS for VTT MPEGTS";
      if (missingInitPTS) {
        unparsedVttFrags.push(data);
      } else {
        this._fallbackToIMSC1(frag, payload);
      }
      hls.logger.log(`Failed to parse VTT cue: ${error}`);
      if (missingInitPTS && maxAvCC > frag.cc) {
        return;
      }
      hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
        success: false,
        frag,
        error
      });
    });
  }
  _fallbackToIMSC1(frag, payload) {
    const trackPlaylistMedia = this.tracks[frag.level];
    if (!trackPlaylistMedia.textCodec) {
      parseIMSC1(payload, this.initPTS[frag.cc], () => {
        trackPlaylistMedia.textCodec = IMSC1_CODEC;
        this._parseIMSC1(frag, payload);
      }, () => {
        trackPlaylistMedia.textCodec = "wvtt";
      });
    }
  }
  _appendCues(cues, fragLevel) {
    const hls = this.hls;
    if (this.config.renderTextTracksNatively) {
      const textTrack = this.textTracks[fragLevel];
      if (!textTrack || textTrack.mode === "disabled") {
        return;
      }
      cues.forEach((cue) => addCueToTrack(textTrack, cue));
    } else {
      const currentTrack = this.tracks[fragLevel];
      if (!currentTrack) {
        return;
      }
      const track = currentTrack.default ? "default" : "subtitles" + fragLevel;
      hls.trigger(Events.CUES_PARSED, {
        type: "subtitles",
        cues,
        track
      });
    }
  }
  onFragDecrypted(event, data) {
    const {
      frag
    } = data;
    if (frag.type === PlaylistLevelType.SUBTITLE) {
      this.onFragLoaded(Events.FRAG_LOADED, data);
    }
  }
  onSubtitleTracksCleared() {
    this.tracks = [];
    this.captionsTracks = {};
  }
  onFragParsingUserdata(event, data) {
    if (!this.enabled || !this.config.enableCEA708Captions) {
      return;
    }
    const {
      frag,
      samples
    } = data;
    if (frag.type === PlaylistLevelType.MAIN && this.closedCaptionsForLevel(frag) === "NONE") {
      return;
    }
    for (let i = 0; i < samples.length; i++) {
      const ccBytes = samples[i].bytes;
      if (ccBytes) {
        if (!this.cea608Parser1) {
          this.initCea608Parsers();
        }
        const ccdatas = this.extractCea608Data(ccBytes);
        this.cea608Parser1.addData(samples[i].pts, ccdatas[0]);
        this.cea608Parser2.addData(samples[i].pts, ccdatas[1]);
      }
    }
  }
  onBufferFlushing(event, {
    startOffset,
    endOffset,
    endOffsetSubtitles,
    type
  }) {
    const {
      media
    } = this;
    if (!media || media.currentTime < endOffset) {
      return;
    }
    if (!type || type === "video") {
      const {
        captionsTracks
      } = this;
      Object.keys(captionsTracks).forEach((trackName) => removeCuesInRange(captionsTracks[trackName], startOffset, endOffset));
    }
    if (this.config.renderTextTracksNatively) {
      if (startOffset === 0 && endOffsetSubtitles !== void 0) {
        const {
          textTracks
        } = this;
        Object.keys(textTracks).forEach((trackName) => removeCuesInRange(textTracks[trackName], startOffset, endOffsetSubtitles));
      }
    }
  }
  extractCea608Data(byteArray) {
    const actualCCBytes = [[], []];
    const count = byteArray[0] & 31;
    let position = 2;
    for (let j = 0; j < count; j++) {
      const tmpByte = byteArray[position++];
      const ccbyte1 = 127 & byteArray[position++];
      const ccbyte2 = 127 & byteArray[position++];
      if (ccbyte1 === 0 && ccbyte2 === 0) {
        continue;
      }
      const ccValid = (4 & tmpByte) !== 0;
      if (ccValid) {
        const ccType = 3 & tmpByte;
        if (ccType === 0 || ccType === 1) {
          actualCCBytes[ccType].push(ccbyte1);
          actualCCBytes[ccType].push(ccbyte2);
        }
      }
    }
    return actualCCBytes;
  }
};
function captionsOrSubtitlesFromCharacteristics(track) {
  if (track.characteristics) {
    if (/transcribes-spoken-dialog/gi.test(track.characteristics) && /describes-music-and-sound/gi.test(track.characteristics)) {
      return "captions";
    }
  }
  return "subtitles";
}
function canReuseVttTextTrack(inUseTrack, manifestTrack) {
  return !!inUseTrack && inUseTrack.kind === captionsOrSubtitlesFromCharacteristics(manifestTrack) && subtitleTrackMatchesTextTrack(manifestTrack, inUseTrack);
}
function intersection(x1, x2, y1, y2) {
  return Math.min(x2, y2) - Math.max(x1, y1);
}
function newVTTCCs() {
  return {
    ccOffset: 0,
    presentationOffset: 0,
    0: {
      start: 0,
      prevCC: -1,
      new: true
    }
  };
}
var WHITESPACE_CHAR = /\s/;
var Cues = {
  newCue(track, startTime, endTime, captionScreen) {
    const result = [];
    let row;
    let cue;
    let indenting;
    let indent;
    let text;
    const Cue = self.VTTCue || self.TextTrackCue;
    for (let r = 0; r < captionScreen.rows.length; r++) {
      row = captionScreen.rows[r];
      indenting = true;
      indent = 0;
      text = "";
      if (!row.isEmpty()) {
        var _track$cues;
        for (let c = 0; c < row.chars.length; c++) {
          if (WHITESPACE_CHAR.test(row.chars[c].uchar) && indenting) {
            indent++;
          } else {
            text += row.chars[c].uchar;
            indenting = false;
          }
        }
        row.cueStartTime = startTime;
        if (startTime === endTime) {
          endTime += 1e-4;
        }
        if (indent >= 16) {
          indent--;
        } else {
          indent++;
        }
        const cueText = fixLineBreaks(text.trim());
        const id = generateCueId(startTime, endTime, cueText);
        if (!(track != null && (_track$cues = track.cues) != null && _track$cues.getCueById(id))) {
          cue = new Cue(startTime, endTime, cueText);
          cue.id = id;
          cue.line = r + 1;
          cue.align = "left";
          cue.position = 10 + Math.min(80, Math.floor(indent * 8 / 32) * 10);
          result.push(cue);
        }
      }
    }
    if (track && result.length) {
      result.sort((cueA, cueB) => {
        if (cueA.line === "auto" || cueB.line === "auto") {
          return 0;
        }
        if (cueA.line > 8 && cueB.line > 8) {
          return cueB.line - cueA.line;
        }
        return cueA.line - cueB.line;
      });
      result.forEach((cue2) => addCueToTrack(track, cue2));
    }
    return result;
  }
};
function fetchSupported() {
  if (self.fetch && self.AbortController && self.ReadableStream && self.Request) {
    try {
      new self.ReadableStream({});
      return true;
    } catch (e) {
    }
  }
  return false;
}
var BYTERANGE = /(\d+)-(\d+)\/(\d+)/;
var FetchLoader = class {
  constructor(config) {
    this.fetchSetup = void 0;
    this.requestTimeout = void 0;
    this.request = null;
    this.response = null;
    this.controller = void 0;
    this.context = null;
    this.config = null;
    this.callbacks = null;
    this.stats = void 0;
    this.loader = null;
    this.fetchSetup = config.fetchSetup || getRequest;
    this.controller = new self.AbortController();
    this.stats = new LoadStats();
  }
  destroy() {
    this.loader = this.callbacks = this.context = this.config = this.request = null;
    this.abortInternal();
    this.response = null;
    this.fetchSetup = this.controller = this.stats = null;
  }
  abortInternal() {
    if (this.controller && !this.stats.loading.end) {
      this.stats.aborted = true;
      this.controller.abort();
    }
  }
  abort() {
    var _this$callbacks;
    this.abortInternal();
    if ((_this$callbacks = this.callbacks) != null && _this$callbacks.onAbort) {
      this.callbacks.onAbort(this.stats, this.context, this.response);
    }
  }
  load(context, config, callbacks) {
    const stats = this.stats;
    if (stats.loading.start) {
      throw new Error("Loader can only be used once.");
    }
    stats.loading.start = self.performance.now();
    const initParams = getRequestParameters(context, this.controller.signal);
    const isArrayBuffer = context.responseType === "arraybuffer";
    const LENGTH = isArrayBuffer ? "byteLength" : "length";
    const {
      maxTimeToFirstByteMs,
      maxLoadTimeMs
    } = config.loadPolicy;
    this.context = context;
    this.config = config;
    this.callbacks = callbacks;
    this.request = this.fetchSetup(context, initParams);
    self.clearTimeout(this.requestTimeout);
    config.timeout = maxTimeToFirstByteMs && isFiniteNumber(maxTimeToFirstByteMs) ? maxTimeToFirstByteMs : maxLoadTimeMs;
    this.requestTimeout = self.setTimeout(() => {
      if (this.callbacks) {
        this.abortInternal();
        this.callbacks.onTimeout(stats, context, this.response);
      }
    }, config.timeout);
    const fetchPromise = isPromise(this.request) ? this.request.then(self.fetch) : self.fetch(this.request);
    fetchPromise.then((response) => {
      var _this$callbacks2;
      this.response = this.loader = response;
      const first = Math.max(self.performance.now(), stats.loading.start);
      self.clearTimeout(this.requestTimeout);
      config.timeout = maxLoadTimeMs;
      this.requestTimeout = self.setTimeout(() => {
        if (this.callbacks) {
          this.abortInternal();
          this.callbacks.onTimeout(stats, context, this.response);
        }
      }, maxLoadTimeMs - (first - stats.loading.start));
      if (!response.ok) {
        const {
          status: status2,
          statusText
        } = response;
        throw new FetchError(statusText || "fetch, bad network response", status2, response);
      }
      stats.loading.first = first;
      stats.total = getContentLength(response.headers) || stats.total;
      const onProgress = (_this$callbacks2 = this.callbacks) == null ? void 0 : _this$callbacks2.onProgress;
      if (onProgress && isFiniteNumber(config.highWaterMark)) {
        return this.loadProgressively(response, stats, context, config.highWaterMark, onProgress);
      }
      if (isArrayBuffer) {
        return response.arrayBuffer();
      }
      if (context.responseType === "json") {
        return response.json();
      }
      return response.text();
    }).then((responseData) => {
      var _this$callbacks3, _this$callbacks4;
      const response = this.response;
      if (!response) {
        throw new Error("loader destroyed");
      }
      self.clearTimeout(this.requestTimeout);
      stats.loading.end = Math.max(self.performance.now(), stats.loading.first);
      const total = responseData[LENGTH];
      if (total) {
        stats.loaded = stats.total = total;
      }
      const loaderResponse = {
        url: response.url,
        data: responseData,
        code: response.status
      };
      const onProgress = (_this$callbacks3 = this.callbacks) == null ? void 0 : _this$callbacks3.onProgress;
      if (onProgress && !isFiniteNumber(config.highWaterMark)) {
        onProgress(stats, context, responseData, response);
      }
      (_this$callbacks4 = this.callbacks) == null ? void 0 : _this$callbacks4.onSuccess(loaderResponse, stats, context, response);
    }).catch((error) => {
      var _this$callbacks5;
      self.clearTimeout(this.requestTimeout);
      if (stats.aborted) {
        return;
      }
      const code = !error ? 0 : error.code || 0;
      const text = !error ? null : error.message;
      (_this$callbacks5 = this.callbacks) == null ? void 0 : _this$callbacks5.onError({
        code,
        text
      }, context, error ? error.details : null, stats);
    });
  }
  getCacheAge() {
    let result = null;
    if (this.response) {
      const ageHeader = this.response.headers.get("age");
      result = ageHeader ? parseFloat(ageHeader) : null;
    }
    return result;
  }
  getResponseHeader(name) {
    return this.response ? this.response.headers.get(name) : null;
  }
  loadProgressively(response, stats, context, highWaterMark = 0, onProgress) {
    const chunkCache = new ChunkCache();
    const reader = response.body.getReader();
    const pump = () => {
      return reader.read().then((data) => {
        if (data.done) {
          if (chunkCache.dataLength) {
            onProgress(stats, context, chunkCache.flush().buffer, response);
          }
          return Promise.resolve(new ArrayBuffer(0));
        }
        const chunk = data.value;
        const len = chunk.length;
        stats.loaded += len;
        if (len < highWaterMark || chunkCache.dataLength) {
          chunkCache.push(chunk);
          if (chunkCache.dataLength >= highWaterMark) {
            onProgress(stats, context, chunkCache.flush().buffer, response);
          }
        } else {
          onProgress(stats, context, chunk.buffer, response);
        }
        return pump();
      }).catch(() => {
        return Promise.reject();
      });
    };
    return pump();
  }
};
function getRequestParameters(context, signal) {
  const initParams = {
    method: "GET",
    mode: "cors",
    credentials: "same-origin",
    signal,
    headers: new self.Headers(_extends({}, context.headers))
  };
  if (context.rangeEnd) {
    initParams.headers.set("Range", "bytes=" + context.rangeStart + "-" + String(context.rangeEnd - 1));
  }
  return initParams;
}
function getByteRangeLength(byteRangeHeader) {
  const result = BYTERANGE.exec(byteRangeHeader);
  if (result) {
    return parseInt(result[2]) - parseInt(result[1]) + 1;
  }
}
function getContentLength(headers) {
  const contentRange = headers.get("Content-Range");
  if (contentRange) {
    const byteRangeLength = getByteRangeLength(contentRange);
    if (isFiniteNumber(byteRangeLength)) {
      return byteRangeLength;
    }
  }
  const contentLength = headers.get("Content-Length");
  if (contentLength) {
    return parseInt(contentLength);
  }
}
function getRequest(context, initParams) {
  return new self.Request(context.url, initParams);
}
var FetchError = class extends Error {
  constructor(message, code, details) {
    super(message);
    this.code = void 0;
    this.details = void 0;
    this.code = code;
    this.details = details;
  }
};
var AGE_HEADER_LINE_REGEX = /^age:\s*[\d.]+\s*$/im;
var XhrLoader = class {
  constructor(config) {
    this.xhrSetup = void 0;
    this.requestTimeout = void 0;
    this.retryTimeout = void 0;
    this.retryDelay = void 0;
    this.config = null;
    this.callbacks = null;
    this.context = null;
    this.loader = null;
    this.stats = void 0;
    this.xhrSetup = config ? config.xhrSetup || null : null;
    this.stats = new LoadStats();
    this.retryDelay = 0;
  }
  destroy() {
    this.callbacks = null;
    this.abortInternal();
    this.loader = null;
    this.config = null;
    this.context = null;
    this.xhrSetup = null;
  }
  abortInternal() {
    const loader = this.loader;
    self.clearTimeout(this.requestTimeout);
    self.clearTimeout(this.retryTimeout);
    if (loader) {
      loader.onreadystatechange = null;
      loader.onprogress = null;
      if (loader.readyState !== 4) {
        this.stats.aborted = true;
        loader.abort();
      }
    }
  }
  abort() {
    var _this$callbacks;
    this.abortInternal();
    if ((_this$callbacks = this.callbacks) != null && _this$callbacks.onAbort) {
      this.callbacks.onAbort(this.stats, this.context, this.loader);
    }
  }
  load(context, config, callbacks) {
    if (this.stats.loading.start) {
      throw new Error("Loader can only be used once.");
    }
    this.stats.loading.start = self.performance.now();
    this.context = context;
    this.config = config;
    this.callbacks = callbacks;
    this.loadInternal();
  }
  loadInternal() {
    const {
      config,
      context
    } = this;
    if (!config || !context) {
      return;
    }
    const xhr = this.loader = new self.XMLHttpRequest();
    const stats = this.stats;
    stats.loading.first = 0;
    stats.loaded = 0;
    stats.aborted = false;
    const xhrSetup = this.xhrSetup;
    if (xhrSetup) {
      Promise.resolve().then(() => {
        if (this.loader !== xhr || this.stats.aborted)
          return;
        return xhrSetup(xhr, context.url);
      }).catch((error) => {
        if (this.loader !== xhr || this.stats.aborted)
          return;
        xhr.open("GET", context.url, true);
        return xhrSetup(xhr, context.url);
      }).then(() => {
        if (this.loader !== xhr || this.stats.aborted)
          return;
        this.openAndSendXhr(xhr, context, config);
      }).catch((error) => {
        var _this$callbacks2;
        (_this$callbacks2 = this.callbacks) == null ? void 0 : _this$callbacks2.onError({
          code: xhr.status,
          text: error.message
        }, context, xhr, stats);
        return;
      });
    } else {
      this.openAndSendXhr(xhr, context, config);
    }
  }
  openAndSendXhr(xhr, context, config) {
    if (!xhr.readyState) {
      xhr.open("GET", context.url, true);
    }
    const headers = context.headers;
    const {
      maxTimeToFirstByteMs,
      maxLoadTimeMs
    } = config.loadPolicy;
    if (headers) {
      for (const header in headers) {
        xhr.setRequestHeader(header, headers[header]);
      }
    }
    if (context.rangeEnd) {
      xhr.setRequestHeader("Range", "bytes=" + context.rangeStart + "-" + (context.rangeEnd - 1));
    }
    xhr.onreadystatechange = this.readystatechange.bind(this);
    xhr.onprogress = this.loadprogress.bind(this);
    xhr.responseType = context.responseType;
    self.clearTimeout(this.requestTimeout);
    config.timeout = maxTimeToFirstByteMs && isFiniteNumber(maxTimeToFirstByteMs) ? maxTimeToFirstByteMs : maxLoadTimeMs;
    this.requestTimeout = self.setTimeout(this.loadtimeout.bind(this), config.timeout);
    xhr.send();
  }
  readystatechange() {
    const {
      context,
      loader: xhr,
      stats
    } = this;
    if (!context || !xhr) {
      return;
    }
    const readyState = xhr.readyState;
    const config = this.config;
    if (stats.aborted) {
      return;
    }
    if (readyState >= 2) {
      if (stats.loading.first === 0) {
        stats.loading.first = Math.max(self.performance.now(), stats.loading.start);
        if (config.timeout !== config.loadPolicy.maxLoadTimeMs) {
          self.clearTimeout(this.requestTimeout);
          config.timeout = config.loadPolicy.maxLoadTimeMs;
          this.requestTimeout = self.setTimeout(this.loadtimeout.bind(this), config.loadPolicy.maxLoadTimeMs - (stats.loading.first - stats.loading.start));
        }
      }
      if (readyState === 4) {
        self.clearTimeout(this.requestTimeout);
        xhr.onreadystatechange = null;
        xhr.onprogress = null;
        const status2 = xhr.status;
        const useResponseText = xhr.responseType === "text" ? xhr.responseText : null;
        if (status2 >= 200 && status2 < 300) {
          const data = useResponseText != null ? useResponseText : xhr.response;
          if (data != null) {
            var _this$callbacks3, _this$callbacks4;
            stats.loading.end = Math.max(self.performance.now(), stats.loading.first);
            const len = xhr.responseType === "arraybuffer" ? data.byteLength : data.length;
            stats.loaded = stats.total = len;
            stats.bwEstimate = stats.total * 8e3 / (stats.loading.end - stats.loading.first);
            const onProgress = (_this$callbacks3 = this.callbacks) == null ? void 0 : _this$callbacks3.onProgress;
            if (onProgress) {
              onProgress(stats, context, data, xhr);
            }
            const _response = {
              url: xhr.responseURL,
              data,
              code: status2
            };
            (_this$callbacks4 = this.callbacks) == null ? void 0 : _this$callbacks4.onSuccess(_response, stats, context, xhr);
            return;
          }
        }
        const retryConfig = config.loadPolicy.errorRetry;
        const retryCount = stats.retry;
        const response = {
          url: context.url,
          data: void 0,
          code: status2
        };
        if (shouldRetry(retryConfig, retryCount, false, response)) {
          this.retry(retryConfig);
        } else {
          var _this$callbacks5;
          logger.error(`${status2} while loading ${context.url}`);
          (_this$callbacks5 = this.callbacks) == null ? void 0 : _this$callbacks5.onError({
            code: status2,
            text: xhr.statusText
          }, context, xhr, stats);
        }
      }
    }
  }
  loadtimeout() {
    if (!this.config)
      return;
    const retryConfig = this.config.loadPolicy.timeoutRetry;
    const retryCount = this.stats.retry;
    if (shouldRetry(retryConfig, retryCount, true)) {
      this.retry(retryConfig);
    } else {
      var _this$context;
      logger.warn(`timeout while loading ${(_this$context = this.context) == null ? void 0 : _this$context.url}`);
      const callbacks = this.callbacks;
      if (callbacks) {
        this.abortInternal();
        callbacks.onTimeout(this.stats, this.context, this.loader);
      }
    }
  }
  retry(retryConfig) {
    const {
      context,
      stats
    } = this;
    this.retryDelay = getRetryDelay(retryConfig, stats.retry);
    stats.retry++;
    logger.warn(`${status ? "HTTP Status " + status : "Timeout"} while loading ${context == null ? void 0 : context.url}, retrying ${stats.retry}/${retryConfig.maxNumRetry} in ${this.retryDelay}ms`);
    this.abortInternal();
    this.loader = null;
    self.clearTimeout(this.retryTimeout);
    this.retryTimeout = self.setTimeout(this.loadInternal.bind(this), this.retryDelay);
  }
  loadprogress(event) {
    const stats = this.stats;
    stats.loaded = event.loaded;
    if (event.lengthComputable) {
      stats.total = event.total;
    }
  }
  getCacheAge() {
    let result = null;
    if (this.loader && AGE_HEADER_LINE_REGEX.test(this.loader.getAllResponseHeaders())) {
      const ageHeader = this.loader.getResponseHeader("age");
      result = ageHeader ? parseFloat(ageHeader) : null;
    }
    return result;
  }
  getResponseHeader(name) {
    if (this.loader && new RegExp(`^${name}:\\s*[\\d.]+\\s*$`, "im").test(this.loader.getAllResponseHeaders())) {
      return this.loader.getResponseHeader(name);
    }
    return null;
  }
};
var defaultLoadPolicy = {
  maxTimeToFirstByteMs: 8e3,
  maxLoadTimeMs: 2e4,
  timeoutRetry: null,
  errorRetry: null
};
var hlsDefaultConfig = _objectSpread2(_objectSpread2({
  autoStartLoad: true,
  startPosition: -1,
  defaultAudioCodec: void 0,
  debug: false,
  capLevelOnFPSDrop: false,
  capLevelToPlayerSize: false,
  ignoreDevicePixelRatio: false,
  maxDevicePixelRatio: Number.POSITIVE_INFINITY,
  preferManagedMediaSource: true,
  initialLiveManifestSize: 1,
  maxBufferLength: 30,
  backBufferLength: Infinity,
  frontBufferFlushThreshold: Infinity,
  startOnSegmentBoundary: false,
  maxBufferSize: 60 * 1e3 * 1e3,
  maxFragLookUpTolerance: 0.25,
  maxBufferHole: 0.1,
  detectStallWithCurrentTimeMs: 1250,
  highBufferWatchdogPeriod: 2,
  nudgeOffset: 0.1,
  nudgeMaxRetry: 3,
  nudgeOnVideoHole: true,
  liveSyncMode: "edge",
  liveSyncDurationCount: 3,
  liveSyncOnStallIncrease: 1,
  liveMaxLatencyDurationCount: Infinity,
  liveSyncDuration: void 0,
  liveMaxLatencyDuration: void 0,
  maxLiveSyncPlaybackRate: 1,
  liveDurationInfinity: false,
  liveBackBufferLength: null,
  maxMaxBufferLength: 600,
  enableWorker: true,
  workerPath: null,
  enableSoftwareAES: true,
  startLevel: void 0,
  startFragPrefetch: false,
  fpsDroppedMonitoringPeriod: 5e3,
  fpsDroppedMonitoringThreshold: 0.2,
  appendErrorMaxRetry: 3,
  ignorePlaylistParsingErrors: false,
  loader: XhrLoader,
  fLoader: void 0,
  pLoader: void 0,
  xhrSetup: void 0,
  licenseXhrSetup: void 0,
  licenseResponseCallback: void 0,
  abrController: AbrController,
  bufferController: BufferController,
  capLevelController: CapLevelController,
  errorController: ErrorController,
  fpsController: FPSController,
  stretchShortVideoTrack: false,
  maxAudioFramesDrift: 1,
  forceKeyFrameOnDiscontinuity: true,
  abrEwmaFastLive: 3,
  abrEwmaSlowLive: 9,
  abrEwmaFastVoD: 3,
  abrEwmaSlowVoD: 9,
  abrEwmaDefaultEstimate: 5e5,
  abrEwmaDefaultEstimateMax: 5e6,
  abrBandWidthFactor: 0.95,
  abrBandWidthUpFactor: 0.7,
  abrMaxWithRealBitrate: false,
  maxStarvationDelay: 4,
  maxLoadingDelay: 4,
  minAutoBitrate: 0,
  emeEnabled: false,
  widevineLicenseUrl: void 0,
  drmSystems: {},
  drmSystemOptions: {},
  requestMediaKeySystemAccessFunc: requestMediaKeySystemAccess,
  requireKeySystemAccessOnStart: false,
  testBandwidth: true,
  progressive: false,
  lowLatencyMode: true,
  cmcd: void 0,
  enableDateRangeMetadataCues: true,
  enableEmsgMetadataCues: true,
  enableEmsgKLVMetadata: false,
  enableID3MetadataCues: true,
  enableInterstitialPlayback: true,
  interstitialAppendInPlace: true,
  interstitialLiveLookAhead: 10,
  useMediaCapabilities: true,
  preserveManualLevelOnError: false,
  certLoadPolicy: {
    default: defaultLoadPolicy
  },
  keyLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: 8e3,
      maxLoadTimeMs: 2e4,
      timeoutRetry: {
        maxNumRetry: 1,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 2e4,
        backoff: "linear"
      },
      errorRetry: {
        maxNumRetry: 8,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 2e4,
        backoff: "linear"
      }
    }
  },
  manifestLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: Infinity,
      maxLoadTimeMs: 2e4,
      timeoutRetry: {
        maxNumRetry: 2,
        retryDelayMs: 0,
        maxRetryDelayMs: 0
      },
      errorRetry: {
        maxNumRetry: 1,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 8e3
      }
    }
  },
  playlistLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: 1e4,
      maxLoadTimeMs: 2e4,
      timeoutRetry: {
        maxNumRetry: 2,
        retryDelayMs: 0,
        maxRetryDelayMs: 0
      },
      errorRetry: {
        maxNumRetry: 2,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 8e3
      }
    }
  },
  fragLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: 1e4,
      maxLoadTimeMs: 12e4,
      timeoutRetry: {
        maxNumRetry: 4,
        retryDelayMs: 0,
        maxRetryDelayMs: 0
      },
      errorRetry: {
        maxNumRetry: 6,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 8e3
      }
    }
  },
  steeringManifestLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: 1e4,
      maxLoadTimeMs: 2e4,
      timeoutRetry: {
        maxNumRetry: 2,
        retryDelayMs: 0,
        maxRetryDelayMs: 0
      },
      errorRetry: {
        maxNumRetry: 1,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 8e3
      }
    }
  },
  interstitialAssetListLoadPolicy: {
    default: {
      maxTimeToFirstByteMs: 1e4,
      maxLoadTimeMs: 3e4,
      timeoutRetry: {
        maxNumRetry: 0,
        retryDelayMs: 0,
        maxRetryDelayMs: 0
      },
      errorRetry: {
        maxNumRetry: 0,
        retryDelayMs: 1e3,
        maxRetryDelayMs: 8e3
      }
    }
  },
  manifestLoadingTimeOut: 1e4,
  manifestLoadingMaxRetry: 1,
  manifestLoadingRetryDelay: 1e3,
  manifestLoadingMaxRetryTimeout: 64e3,
  levelLoadingTimeOut: 1e4,
  levelLoadingMaxRetry: 4,
  levelLoadingRetryDelay: 1e3,
  levelLoadingMaxRetryTimeout: 64e3,
  fragLoadingTimeOut: 2e4,
  fragLoadingMaxRetry: 6,
  fragLoadingRetryDelay: 1e3,
  fragLoadingMaxRetryTimeout: 64e3
}, timelineConfig()), {}, {
  subtitleStreamController: SubtitleStreamController,
  subtitleTrackController: SubtitleTrackController,
  timelineController: TimelineController,
  audioStreamController: AudioStreamController,
  audioTrackController: AudioTrackController,
  emeController: EMEController,
  cmcdController: CMCDController,
  contentSteeringController: ContentSteeringController,
  interstitialsController: InterstitialsController
});
function timelineConfig() {
  return {
    cueHandler: Cues,
    enableWebVTT: true,
    enableIMSC1: true,
    enableCEA708Captions: true,
    captionsTextTrack1Label: "English",
    captionsTextTrack1LanguageCode: "en",
    captionsTextTrack2Label: "Spanish",
    captionsTextTrack2LanguageCode: "es",
    captionsTextTrack3Label: "Unknown CC",
    captionsTextTrack3LanguageCode: "",
    captionsTextTrack4Label: "Unknown CC",
    captionsTextTrack4LanguageCode: "",
    renderTextTracksNatively: true
  };
}
function mergeConfig(defaultConfig, userConfig, logger2) {
  if ((userConfig.liveSyncDurationCount || userConfig.liveMaxLatencyDurationCount) && (userConfig.liveSyncDuration || userConfig.liveMaxLatencyDuration)) {
    throw new Error("Illegal hls.js config: don't mix up liveSyncDurationCount/liveMaxLatencyDurationCount and liveSyncDuration/liveMaxLatencyDuration");
  }
  if (userConfig.liveMaxLatencyDurationCount !== void 0 && (userConfig.liveSyncDurationCount === void 0 || userConfig.liveMaxLatencyDurationCount <= userConfig.liveSyncDurationCount)) {
    throw new Error('Illegal hls.js config: "liveMaxLatencyDurationCount" must be greater than "liveSyncDurationCount"');
  }
  if (userConfig.liveMaxLatencyDuration !== void 0 && (userConfig.liveSyncDuration === void 0 || userConfig.liveMaxLatencyDuration <= userConfig.liveSyncDuration)) {
    throw new Error('Illegal hls.js config: "liveMaxLatencyDuration" must be greater than "liveSyncDuration"');
  }
  const defaultsCopy = deepCpy(defaultConfig);
  const deprecatedSettingTypes = ["manifest", "level", "frag"];
  const deprecatedSettings = ["TimeOut", "MaxRetry", "RetryDelay", "MaxRetryTimeout"];
  deprecatedSettingTypes.forEach((type) => {
    const policyName = `${type === "level" ? "playlist" : type}LoadPolicy`;
    const policyNotSet = userConfig[policyName] === void 0;
    const report = [];
    deprecatedSettings.forEach((setting) => {
      const deprecatedSetting = `${type}Loading${setting}`;
      const value = userConfig[deprecatedSetting];
      if (value !== void 0 && policyNotSet) {
        report.push(deprecatedSetting);
        const settings = defaultsCopy[policyName].default;
        userConfig[policyName] = {
          default: settings
        };
        switch (setting) {
          case "TimeOut":
            settings.maxLoadTimeMs = value;
            settings.maxTimeToFirstByteMs = value;
            break;
          case "MaxRetry":
            settings.errorRetry.maxNumRetry = value;
            settings.timeoutRetry.maxNumRetry = value;
            break;
          case "RetryDelay":
            settings.errorRetry.retryDelayMs = value;
            settings.timeoutRetry.retryDelayMs = value;
            break;
          case "MaxRetryTimeout":
            settings.errorRetry.maxRetryDelayMs = value;
            settings.timeoutRetry.maxRetryDelayMs = value;
            break;
        }
      }
    });
    if (report.length) {
      logger2.warn(`hls.js config: "${report.join('", "')}" setting(s) are deprecated, use "${policyName}": ${stringify(userConfig[policyName])}`);
    }
  });
  return _objectSpread2(_objectSpread2({}, defaultsCopy), userConfig);
}
function deepCpy(obj) {
  if (obj && typeof obj === "object") {
    if (Array.isArray(obj)) {
      return obj.map(deepCpy);
    }
    return Object.keys(obj).reduce((result, key) => {
      result[key] = deepCpy(obj[key]);
      return result;
    }, {});
  }
  return obj;
}
function enableStreamingMode(config, logger2) {
  const currentLoader = config.loader;
  if (currentLoader !== FetchLoader && currentLoader !== XhrLoader) {
    logger2.log("[config]: Custom loader detected, cannot enable progressive streaming");
    config.progressive = false;
  } else {
    const canStreamProgressively = fetchSupported();
    if (canStreamProgressively) {
      config.loader = FetchLoader;
      config.progressive = true;
      config.enableSoftwareAES = true;
      logger2.log("[config]: Progressive streaming enabled, using FetchLoader");
    }
  }
}
var MAX_START_GAP_JUMP = 2;
var SKIP_BUFFER_HOLE_STEP_SECONDS = 0.1;
var SKIP_BUFFER_RANGE_START = 0.05;
var TICK_INTERVAL$1 = 100;
var GapController = class extends TaskLoop {
  constructor(hls, fragmentTracker) {
    super("gap-controller", hls.logger);
    this.hls = null;
    this.fragmentTracker = null;
    this.media = null;
    this.mediaSource = void 0;
    this.nudgeRetry = 0;
    this.stallReported = false;
    this.stalled = null;
    this.moved = false;
    this.seeking = false;
    this.buffered = {};
    this.lastCurrentTime = 0;
    this.ended = 0;
    this.waiting = 0;
    this.onMediaPlaying = () => {
      this.ended = 0;
      this.waiting = 0;
    };
    this.onMediaWaiting = () => {
      var _this$media;
      if ((_this$media = this.media) != null && _this$media.seeking) {
        return;
      }
      this.waiting = self.performance.now();
      this.tick();
    };
    this.onMediaEnded = () => {
      if (this.hls) {
        var _this$media2;
        this.ended = ((_this$media2 = this.media) == null ? void 0 : _this$media2.currentTime) || 1;
        this.hls.trigger(Events.MEDIA_ENDED, {
          stalled: false
        });
      }
    };
    this.hls = hls;
    this.fragmentTracker = fragmentTracker;
    this.registerListeners();
  }
  registerListeners() {
    const {
      hls
    } = this;
    if (hls) {
      hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
      hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
      hls.on(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    }
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    if (hls) {
      hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
      hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
      hls.off(Events.BUFFER_APPENDED, this.onBufferAppended, this);
    }
  }
  destroy() {
    super.destroy();
    this.unregisterListeners();
    this.media = this.hls = this.fragmentTracker = null;
    this.mediaSource = void 0;
  }
  onMediaAttached(event, data) {
    this.setInterval(TICK_INTERVAL$1);
    this.mediaSource = data.mediaSource;
    const media = this.media = data.media;
    addEventListener(media, "playing", this.onMediaPlaying);
    addEventListener(media, "waiting", this.onMediaWaiting);
    addEventListener(media, "ended", this.onMediaEnded);
  }
  onMediaDetaching(event, data) {
    this.clearInterval();
    const {
      media
    } = this;
    if (media) {
      removeEventListener(media, "playing", this.onMediaPlaying);
      removeEventListener(media, "waiting", this.onMediaWaiting);
      removeEventListener(media, "ended", this.onMediaEnded);
      this.media = null;
    }
    this.mediaSource = void 0;
  }
  onBufferAppended(event, data) {
    this.buffered = data.timeRanges;
  }
  get hasBuffered() {
    return Object.keys(this.buffered).length > 0;
  }
  tick() {
    var _this$media3;
    if (!((_this$media3 = this.media) != null && _this$media3.readyState) || !this.hasBuffered) {
      return;
    }
    const currentTime = this.media.currentTime;
    this.poll(currentTime, this.lastCurrentTime);
    this.lastCurrentTime = currentTime;
  }
  poll(currentTime, lastCurrentTime) {
    var _this$hls, _this$hls2;
    const config = (_this$hls = this.hls) == null ? void 0 : _this$hls.config;
    if (!config) {
      return;
    }
    const media = this.media;
    if (!media) {
      return;
    }
    const {
      seeking
    } = media;
    const seeked = this.seeking && !seeking;
    const beginSeek = !this.seeking && seeking;
    const pausedEndedOrHalted = media.paused && !seeking || media.ended || media.playbackRate === 0;
    this.seeking = seeking;
    if (currentTime !== lastCurrentTime) {
      if (lastCurrentTime) {
        this.ended = 0;
      }
      this.moved = true;
      if (!seeking) {
        this.nudgeRetry = 0;
        if (config.nudgeOnVideoHole && !pausedEndedOrHalted && currentTime > lastCurrentTime) {
          this.nudgeOnVideoHole(currentTime, lastCurrentTime);
        }
      }
      if (this.waiting === 0) {
        this.stallResolved(currentTime);
      }
      return;
    }
    if (beginSeek || seeked) {
      if (seeked) {
        this.stallResolved(currentTime);
      }
      return;
    }
    if (pausedEndedOrHalted) {
      this.nudgeRetry = 0;
      this.stallResolved(currentTime);
      if (!this.ended && media.ended && this.hls) {
        this.ended = currentTime || 1;
        this.hls.trigger(Events.MEDIA_ENDED, {
          stalled: false
        });
      }
      return;
    }
    if (!BufferHelper.getBuffered(media).length) {
      this.nudgeRetry = 0;
      return;
    }
    const bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
    const nextStart = bufferInfo.nextStart || 0;
    const fragmentTracker = this.fragmentTracker;
    if (seeking && fragmentTracker && this.hls) {
      const inFlightDependency = getInFlightDependency(this.hls.inFlightFragments, currentTime);
      const hasEnoughBuffer = bufferInfo.len > MAX_START_GAP_JUMP;
      const noBufferHole = !nextStart || inFlightDependency || nextStart - currentTime > MAX_START_GAP_JUMP && !fragmentTracker.getPartialFragment(currentTime);
      if (hasEnoughBuffer || noBufferHole) {
        return;
      }
      this.moved = false;
    }
    const levelDetails = (_this$hls2 = this.hls) == null ? void 0 : _this$hls2.latestLevelDetails;
    if (!this.moved && this.stalled !== null && fragmentTracker) {
      const isBuffered = bufferInfo.len > 0;
      if (!isBuffered && !nextStart) {
        return;
      }
      const startJump = Math.max(nextStart, bufferInfo.start || 0) - currentTime;
      const isLive = !!(levelDetails != null && levelDetails.live);
      const maxStartGapJump = isLive ? levelDetails.targetduration * 2 : MAX_START_GAP_JUMP;
      const partialOrGap = fragmentTracker.getPartialFragment(currentTime);
      if (startJump > 0 && (startJump <= maxStartGapJump || partialOrGap)) {
        if (!media.paused) {
          this._trySkipBufferHole(partialOrGap);
        }
        return;
      }
    }
    const detectStallWithCurrentTimeMs = config.detectStallWithCurrentTimeMs;
    const tnow = self.performance.now();
    const tWaiting = this.waiting;
    let stalled = this.stalled;
    if (stalled === null) {
      if (tWaiting > 0 && tnow - tWaiting < detectStallWithCurrentTimeMs) {
        stalled = this.stalled = tWaiting;
      } else {
        this.stalled = tnow;
        return;
      }
    }
    const stalledDuration = tnow - stalled;
    if (!seeking && (stalledDuration >= detectStallWithCurrentTimeMs || tWaiting) && this.hls) {
      var _this$mediaSource;
      if (((_this$mediaSource = this.mediaSource) == null ? void 0 : _this$mediaSource.readyState) === "ended" && !(levelDetails != null && levelDetails.live) && Math.abs(currentTime - ((levelDetails == null ? void 0 : levelDetails.edge) || 0)) < 1) {
        if (this.ended) {
          return;
        }
        this.ended = currentTime || 1;
        this.hls.trigger(Events.MEDIA_ENDED, {
          stalled: true
        });
        return;
      }
      this._reportStall(bufferInfo);
      if (!this.media || !this.hls) {
        return;
      }
    }
    const bufferedWithHoles = BufferHelper.bufferInfo(media, currentTime, config.maxBufferHole);
    this._tryFixBufferStall(bufferedWithHoles, stalledDuration, currentTime);
  }
  stallResolved(currentTime) {
    const stalled = this.stalled;
    if (stalled && this.hls) {
      this.stalled = null;
      if (this.stallReported) {
        const stalledDuration = self.performance.now() - stalled;
        this.log(`playback not stuck anymore @${currentTime}, after ${Math.round(stalledDuration)}ms`);
        this.stallReported = false;
        this.waiting = 0;
        this.hls.trigger(Events.STALL_RESOLVED, {});
      }
    }
  }
  nudgeOnVideoHole(currentTime, lastCurrentTime) {
    var _this$buffered$audio;
    const videoSourceBuffered = this.buffered.video;
    if (this.hls && this.media && this.fragmentTracker && (_this$buffered$audio = this.buffered.audio) != null && _this$buffered$audio.length && videoSourceBuffered && videoSourceBuffered.length > 1 && currentTime > videoSourceBuffered.end(0)) {
      const audioBufferInfo = BufferHelper.bufferedInfo(BufferHelper.timeRangesToArray(this.buffered.audio), currentTime, 0);
      if (audioBufferInfo.len > 1 && lastCurrentTime >= audioBufferInfo.start) {
        const videoTimes = BufferHelper.timeRangesToArray(videoSourceBuffered);
        const lastBufferedIndex = BufferHelper.bufferedInfo(videoTimes, lastCurrentTime, 0).bufferedIndex;
        if (lastBufferedIndex > -1 && lastBufferedIndex < videoTimes.length - 1) {
          const bufferedIndex = BufferHelper.bufferedInfo(videoTimes, currentTime, 0).bufferedIndex;
          const holeStart = videoTimes[lastBufferedIndex].end;
          const holeEnd = videoTimes[lastBufferedIndex + 1].start;
          if ((bufferedIndex === -1 || bufferedIndex > lastBufferedIndex) && holeEnd - holeStart < 1 && currentTime - holeStart < 2) {
            const error = new Error(`nudging playhead to flush pipeline after video hole. currentTime: ${currentTime} hole: ${holeStart} -> ${holeEnd} buffered index: ${bufferedIndex}`);
            this.warn(error.message);
            this.media.currentTime += 1e-6;
            const frag = this.fragmentTracker.getPartialFragment(currentTime) || void 0;
            const bufferInfo = BufferHelper.bufferInfo(this.media, currentTime, 0);
            this.hls.trigger(Events.ERROR, {
              type: ErrorTypes.MEDIA_ERROR,
              details: ErrorDetails.BUFFER_SEEK_OVER_HOLE,
              fatal: false,
              error,
              reason: error.message,
              frag,
              buffer: bufferInfo.len,
              bufferInfo
            });
          }
        }
      }
    }
  }
  _tryFixBufferStall(bufferInfo, stalledDurationMs, currentTime) {
    var _this$hls3, _this$hls4;
    const {
      fragmentTracker,
      media
    } = this;
    const config = (_this$hls3 = this.hls) == null ? void 0 : _this$hls3.config;
    if (!media || !fragmentTracker || !config) {
      return;
    }
    const levelDetails = (_this$hls4 = this.hls) == null ? void 0 : _this$hls4.latestLevelDetails;
    const partial = fragmentTracker.getPartialFragment(currentTime);
    if (partial || levelDetails != null && levelDetails.live && currentTime < levelDetails.fragmentStart) {
      const targetTime = this._trySkipBufferHole(partial);
      if (targetTime || !this.media) {
        return;
      }
    }
    const bufferedRanges = bufferInfo.buffered;
    const adjacentTraversal = this.adjacentTraversal(bufferInfo, currentTime);
    if ((bufferedRanges && bufferedRanges.length > 1 && bufferInfo.len > config.maxBufferHole || bufferInfo.nextStart && (bufferInfo.nextStart - currentTime < config.maxBufferHole || adjacentTraversal)) && (stalledDurationMs > config.highBufferWatchdogPeriod * 1e3 || this.waiting)) {
      this.warn("Trying to nudge playhead over buffer-hole");
      this._tryNudgeBuffer(bufferInfo);
    }
  }
  adjacentTraversal(bufferInfo, currentTime) {
    const fragmentTracker = this.fragmentTracker;
    const nextStart = bufferInfo.nextStart;
    if (fragmentTracker && nextStart) {
      const current = fragmentTracker.getFragAtPos(currentTime, PlaylistLevelType.MAIN);
      const next = fragmentTracker.getFragAtPos(nextStart, PlaylistLevelType.MAIN);
      if (current && next) {
        return next.sn - current.sn < 2;
      }
    }
    return false;
  }
  _reportStall(bufferInfo) {
    const {
      hls,
      media,
      stallReported,
      stalled
    } = this;
    if (!stallReported && stalled !== null && media && hls) {
      this.stallReported = true;
      const error = new Error(`Playback stalling at @${media.currentTime} due to low buffer (${stringify(bufferInfo)})`);
      this.warn(error.message);
      hls.trigger(Events.ERROR, {
        type: ErrorTypes.MEDIA_ERROR,
        details: ErrorDetails.BUFFER_STALLED_ERROR,
        fatal: false,
        error,
        buffer: bufferInfo.len,
        bufferInfo,
        stalled: {
          start: stalled
        }
      });
    }
  }
  _trySkipBufferHole(partial) {
    var _this$hls5;
    const {
      fragmentTracker,
      media
    } = this;
    const config = (_this$hls5 = this.hls) == null ? void 0 : _this$hls5.config;
    if (!media || !fragmentTracker || !config) {
      return 0;
    }
    const currentTime = media.currentTime;
    const bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
    const startTime = currentTime < bufferInfo.start ? bufferInfo.start : bufferInfo.nextStart;
    if (startTime && this.hls) {
      const bufferStarved = bufferInfo.len <= config.maxBufferHole;
      const waiting = bufferInfo.len > 0 && bufferInfo.len < 1 && media.readyState < 3;
      const gapLength = startTime - currentTime;
      if (gapLength > 0 && (bufferStarved || waiting)) {
        if (gapLength > config.maxBufferHole) {
          let startGap = false;
          if (currentTime === 0) {
            const startFrag = fragmentTracker.getAppendedFrag(0, PlaylistLevelType.MAIN);
            if (startFrag && startTime < startFrag.end) {
              startGap = true;
            }
          }
          if (!startGap) {
            const startProvisioned = partial || fragmentTracker.getAppendedFrag(currentTime, PlaylistLevelType.MAIN);
            if (startProvisioned) {
              var _this$hls$loadLevelOb;
              if (!((_this$hls$loadLevelOb = this.hls.loadLevelObj) != null && _this$hls$loadLevelOb.details)) {
                return 0;
              }
              const inFlightDependency = getInFlightDependency(this.hls.inFlightFragments, startTime);
              if (inFlightDependency) {
                return 0;
              }
              let moreToLoad = false;
              let pos = startProvisioned.end;
              while (pos < startTime) {
                const provisioned = fragmentTracker.getAppendedFrag(pos, PlaylistLevelType.MAIN) || fragmentTracker.getPartialFragment(pos);
                if (provisioned) {
                  pos += provisioned.duration;
                } else {
                  moreToLoad = true;
                  break;
                }
              }
              if (moreToLoad) {
                return 0;
              }
            }
          }
        }
        const targetTime = Math.max(startTime + SKIP_BUFFER_RANGE_START, currentTime + SKIP_BUFFER_HOLE_STEP_SECONDS);
        this.warn(`skipping hole, adjusting currentTime from ${currentTime} to ${targetTime}`);
        this.moved = true;
        media.currentTime = targetTime;
        if (!(partial != null && partial.gap)) {
          const error = new Error(`fragment loaded with buffer holes, seeking from ${currentTime} to ${targetTime}`);
          this.hls.trigger(Events.ERROR, {
            type: ErrorTypes.MEDIA_ERROR,
            details: ErrorDetails.BUFFER_SEEK_OVER_HOLE,
            fatal: false,
            error,
            reason: error.message,
            frag: partial || void 0,
            buffer: bufferInfo.len,
            bufferInfo
          });
        }
        return targetTime;
      }
    }
    return 0;
  }
  _tryNudgeBuffer(bufferInfo) {
    const {
      hls,
      media,
      nudgeRetry
    } = this;
    const config = hls == null ? void 0 : hls.config;
    if (!media || !config) {
      return 0;
    }
    const currentTime = media.currentTime;
    this.nudgeRetry++;
    if (nudgeRetry < config.nudgeMaxRetry) {
      const targetTime = currentTime + (nudgeRetry + 1) * config.nudgeOffset;
      const error = new Error(`Nudging 'currentTime' from ${currentTime} to ${targetTime}`);
      this.warn(error.message);
      media.currentTime = targetTime;
      hls.trigger(Events.ERROR, {
        type: ErrorTypes.MEDIA_ERROR,
        details: ErrorDetails.BUFFER_NUDGE_ON_STALL,
        error,
        fatal: false,
        buffer: bufferInfo.len,
        bufferInfo
      });
    } else {
      const error = new Error(`Playhead still not moving while enough data buffered @${currentTime} after ${config.nudgeMaxRetry} nudges`);
      this.error(error.message);
      hls.trigger(Events.ERROR, {
        type: ErrorTypes.MEDIA_ERROR,
        details: ErrorDetails.BUFFER_STALLED_ERROR,
        error,
        fatal: true,
        buffer: bufferInfo.len,
        bufferInfo
      });
    }
  }
};
function getInFlightDependency(inFlightFragments, currentTime) {
  const main = inFlight(inFlightFragments.main);
  if (main && main.start <= currentTime) {
    return main;
  }
  const audio = inFlight(inFlightFragments.audio);
  if (audio && audio.start <= currentTime) {
    return audio;
  }
  return null;
}
function inFlight(inFlightData) {
  if (!inFlightData) {
    return null;
  }
  switch (inFlightData.state) {
    case State.IDLE:
    case State.STOPPED:
    case State.ENDED:
    case State.ERROR:
      return null;
  }
  return inFlightData.frag;
}
var MIN_CUE_DURATION = 0.25;
function getCueClass() {
  if (typeof self === "undefined")
    return void 0;
  return self.VTTCue || self.TextTrackCue;
}
function createCueWithDataFields(Cue, startTime, endTime, data, type) {
  let cue = new Cue(startTime, endTime, "");
  try {
    cue.value = data;
    if (type) {
      cue.type = type;
    }
  } catch (e) {
    cue = new Cue(startTime, endTime, stringify(type ? _objectSpread2({
      type
    }, data) : data));
  }
  return cue;
}
var MAX_CUE_ENDTIME = (() => {
  const Cue = getCueClass();
  try {
    Cue && new Cue(0, Number.POSITIVE_INFINITY, "");
  } catch (e) {
    return Number.MAX_VALUE;
  }
  return Number.POSITIVE_INFINITY;
})();
var ID3TrackController = class {
  constructor(hls) {
    this.hls = void 0;
    this.id3Track = null;
    this.media = null;
    this.dateRangeCuesAppended = {};
    this.removeCues = true;
    this.onEventCueEnter = () => {
      if (!this.hls) {
        return;
      }
      this.hls.trigger(Events.EVENT_CUE_ENTER, {});
    };
    this.hls = hls;
    this._registerListeners();
  }
  destroy() {
    this._unregisterListeners();
    this.id3Track = null;
    this.media = null;
    this.dateRangeCuesAppended = {};
    this.hls = this.onEventCueEnter = null;
  }
  _registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.FRAG_PARSING_METADATA, this.onFragParsingMetadata, this);
    hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.on(Events.LEVEL_PTS_UPDATED, this.onLevelPtsUpdated, this);
  }
  _unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.FRAG_PARSING_METADATA, this.onFragParsingMetadata, this);
    hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
    hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.off(Events.LEVEL_PTS_UPDATED, this.onLevelPtsUpdated, this);
  }
  onMediaAttaching(event, data) {
    var _data$overrides;
    this.media = data.media;
    if (((_data$overrides = data.overrides) == null ? void 0 : _data$overrides.cueRemoval) === false) {
      this.removeCues = false;
    }
  }
  onMediaAttached() {
    const details = this.hls.latestLevelDetails;
    if (details) {
      this.updateDateRangeCues(details);
    }
  }
  onMediaDetaching(event, data) {
    this.media = null;
    const transferringMedia = !!data.transferMedia;
    if (transferringMedia) {
      return;
    }
    if (this.id3Track) {
      if (this.removeCues) {
        clearCurrentCues(this.id3Track, this.onEventCueEnter);
      }
      this.id3Track = null;
    }
    this.dateRangeCuesAppended = {};
  }
  onManifestLoading() {
    this.dateRangeCuesAppended = {};
  }
  createTrack(media) {
    const track = this.getID3Track(media.textTracks);
    track.mode = "hidden";
    return track;
  }
  getID3Track(textTracks) {
    if (!this.media) {
      return;
    }
    for (let i = 0; i < textTracks.length; i++) {
      const textTrack = textTracks[i];
      if (textTrack.kind === "metadata" && textTrack.label === "id3") {
        sendAddTrackEvent(textTrack, this.media);
        return textTrack;
      }
    }
    return this.media.addTextTrack("metadata", "id3");
  }
  onFragParsingMetadata(event, data) {
    if (!this.media) {
      return;
    }
    const {
      hls: {
        config: {
          enableEmsgMetadataCues,
          enableID3MetadataCues
        }
      }
    } = this;
    if (!enableEmsgMetadataCues && !enableID3MetadataCues) {
      return;
    }
    const {
      samples
    } = data;
    if (!this.id3Track) {
      this.id3Track = this.createTrack(this.media);
    }
    const Cue = getCueClass();
    if (!Cue) {
      return;
    }
    for (let i = 0; i < samples.length; i++) {
      const type = samples[i].type;
      if (type === MetadataSchema.emsg && !enableEmsgMetadataCues || !enableID3MetadataCues) {
        continue;
      }
      const frames = getId3Frames(samples[i].data);
      if (frames) {
        const startTime = samples[i].pts;
        let endTime = startTime + samples[i].duration;
        if (endTime > MAX_CUE_ENDTIME) {
          endTime = MAX_CUE_ENDTIME;
        }
        const timeDiff = endTime - startTime;
        if (timeDiff <= 0) {
          endTime = startTime + MIN_CUE_DURATION;
        }
        for (let j = 0; j < frames.length; j++) {
          const frame = frames[j];
          if (!isId3TimestampFrame(frame)) {
            this.updateId3CueEnds(startTime, type);
            const cue = createCueWithDataFields(Cue, startTime, endTime, frame, type);
            if (cue) {
              this.id3Track.addCue(cue);
            }
          }
        }
      }
    }
  }
  updateId3CueEnds(startTime, type) {
    var _this$id3Track;
    const cues = (_this$id3Track = this.id3Track) == null ? void 0 : _this$id3Track.cues;
    if (cues) {
      for (let i = cues.length; i--; ) {
        const cue = cues[i];
        if (cue.type === type && cue.startTime < startTime && cue.endTime === MAX_CUE_ENDTIME) {
          cue.endTime = startTime;
        }
      }
    }
  }
  onBufferFlushing(event, {
    startOffset,
    endOffset,
    type
  }) {
    const {
      id3Track,
      hls
    } = this;
    if (!hls) {
      return;
    }
    const {
      config: {
        enableEmsgMetadataCues,
        enableID3MetadataCues
      }
    } = hls;
    if (id3Track && (enableEmsgMetadataCues || enableID3MetadataCues)) {
      let predicate;
      if (type === "audio") {
        predicate = (cue) => cue.type === MetadataSchema.audioId3 && enableID3MetadataCues;
      } else if (type === "video") {
        predicate = (cue) => cue.type === MetadataSchema.emsg && enableEmsgMetadataCues;
      } else {
        predicate = (cue) => cue.type === MetadataSchema.audioId3 && enableID3MetadataCues || cue.type === MetadataSchema.emsg && enableEmsgMetadataCues;
      }
      removeCuesInRange(id3Track, startOffset, endOffset, predicate);
    }
  }
  onLevelUpdated(event, {
    details
  }) {
    this.updateDateRangeCues(details, true);
  }
  onLevelPtsUpdated(event, data) {
    if (Math.abs(data.drift) > 0.01) {
      this.updateDateRangeCues(data.details);
    }
  }
  updateDateRangeCues(details, removeOldCues) {
    if (!this.media || !details.hasProgramDateTime || !this.hls.config.enableDateRangeMetadataCues) {
      return;
    }
    const {
      id3Track
    } = this;
    const {
      dateRanges
    } = details;
    const ids = Object.keys(dateRanges);
    let dateRangeCuesAppended = this.dateRangeCuesAppended;
    if (id3Track && removeOldCues) {
      var _id3Track$cues;
      if ((_id3Track$cues = id3Track.cues) != null && _id3Track$cues.length) {
        const idsToRemove = Object.keys(dateRangeCuesAppended).filter((id) => !ids.includes(id));
        for (let i = idsToRemove.length; i--; ) {
          const id = idsToRemove[i];
          const cues = dateRangeCuesAppended[id].cues;
          delete dateRangeCuesAppended[id];
          Object.keys(cues).forEach((key) => {
            try {
              const cue = cues[key];
              cue.removeEventListener("enter", this.onEventCueEnter);
              id3Track.removeCue(cue);
            } catch (e) {
            }
          });
        }
      } else {
        dateRangeCuesAppended = this.dateRangeCuesAppended = {};
      }
    }
    const lastFragment = details.fragments[details.fragments.length - 1];
    if (ids.length === 0 || !isFiniteNumber(lastFragment == null ? void 0 : lastFragment.programDateTime)) {
      return;
    }
    if (!this.id3Track) {
      this.id3Track = this.createTrack(this.media);
    }
    const Cue = getCueClass();
    for (let i = 0; i < ids.length; i++) {
      const id = ids[i];
      const dateRange = dateRanges[id];
      const startTime = dateRange.startTime;
      const appendedDateRangeCues = dateRangeCuesAppended[id];
      const cues = (appendedDateRangeCues == null ? void 0 : appendedDateRangeCues.cues) || {};
      let durationKnown = (appendedDateRangeCues == null ? void 0 : appendedDateRangeCues.durationKnown) || false;
      let endTime = MAX_CUE_ENDTIME;
      const {
        duration,
        endDate
      } = dateRange;
      if (endDate && duration !== null) {
        endTime = startTime + duration;
        durationKnown = true;
      } else if (dateRange.endOnNext && !durationKnown) {
        const nextDateRangeWithSameClass = ids.reduce((candidateDateRange, id2) => {
          if (id2 !== dateRange.id) {
            const otherDateRange = dateRanges[id2];
            if (otherDateRange.class === dateRange.class && otherDateRange.startDate > dateRange.startDate && (!candidateDateRange || dateRange.startDate < candidateDateRange.startDate)) {
              return otherDateRange;
            }
          }
          return candidateDateRange;
        }, null);
        if (nextDateRangeWithSameClass) {
          endTime = nextDateRangeWithSameClass.startTime;
          durationKnown = true;
        }
      }
      const attributes = Object.keys(dateRange.attr);
      for (let j = 0; j < attributes.length; j++) {
        const key = attributes[j];
        if (!isDateRangeCueAttribute(key)) {
          continue;
        }
        const cue = cues[key];
        if (cue) {
          if (durationKnown && !appendedDateRangeCues.durationKnown) {
            cue.endTime = endTime;
          } else if (Math.abs(cue.startTime - startTime) > 0.01) {
            cue.startTime = startTime;
            cue.endTime = endTime;
          }
        } else if (Cue) {
          let data = dateRange.attr[key];
          if (isSCTE35Attribute(key)) {
            data = hexToArrayBuffer(data);
          }
          const payload = {
            key,
            data
          };
          const _cue = createCueWithDataFields(Cue, startTime, endTime, payload, MetadataSchema.dateRange);
          if (_cue) {
            _cue.id = id;
            this.id3Track.addCue(_cue);
            cues[key] = _cue;
            if (this.hls.config.interstitialsController) {
              if (key === "X-ASSET-LIST" || key === "X-ASSET-URL") {
                _cue.addEventListener("enter", this.onEventCueEnter);
              }
            }
          }
        }
      }
      dateRangeCuesAppended[id] = {
        cues,
        dateRange,
        durationKnown
      };
    }
  }
};
var LatencyController = class {
  constructor(hls) {
    this.hls = void 0;
    this.config = void 0;
    this.media = null;
    this.currentTime = 0;
    this.stallCount = 0;
    this._latency = null;
    this._targetLatencyUpdated = false;
    this.onTimeupdate = () => {
      const {
        media
      } = this;
      const levelDetails = this.levelDetails;
      if (!media || !levelDetails) {
        return;
      }
      this.currentTime = media.currentTime;
      const latency = this.computeLatency();
      if (latency === null) {
        return;
      }
      this._latency = latency;
      const {
        lowLatencyMode,
        maxLiveSyncPlaybackRate
      } = this.config;
      if (!lowLatencyMode || maxLiveSyncPlaybackRate === 1 || !levelDetails.live) {
        return;
      }
      const targetLatency = this.targetLatency;
      if (targetLatency === null) {
        return;
      }
      const distanceFromTarget = latency - targetLatency;
      const liveMinLatencyDuration = Math.min(this.maxLatency, targetLatency + levelDetails.targetduration);
      const inLiveRange = distanceFromTarget < liveMinLatencyDuration;
      if (inLiveRange && distanceFromTarget > 0.05 && this.forwardBufferLength > 1) {
        const max = Math.min(2, Math.max(1, maxLiveSyncPlaybackRate));
        const rate = Math.round(2 / (1 + Math.exp(-0.75 * distanceFromTarget - this.edgeStalled)) * 20) / 20;
        const playbackRate = Math.min(max, Math.max(1, rate));
        this.changeMediaPlaybackRate(media, playbackRate);
      } else if (media.playbackRate !== 1 && media.playbackRate !== 0) {
        this.changeMediaPlaybackRate(media, 1);
      }
    };
    this.hls = hls;
    this.config = hls.config;
    this.registerListeners();
  }
  get levelDetails() {
    var _this$hls;
    return ((_this$hls = this.hls) == null ? void 0 : _this$hls.latestLevelDetails) || null;
  }
  get latency() {
    return this._latency || 0;
  }
  get maxLatency() {
    const {
      config
    } = this;
    if (config.liveMaxLatencyDuration !== void 0) {
      return config.liveMaxLatencyDuration;
    }
    const levelDetails = this.levelDetails;
    return levelDetails ? config.liveMaxLatencyDurationCount * levelDetails.targetduration : 0;
  }
  get targetLatency() {
    const levelDetails = this.levelDetails;
    if (levelDetails === null || this.hls === null) {
      return null;
    }
    const {
      holdBack,
      partHoldBack,
      targetduration
    } = levelDetails;
    const {
      liveSyncDuration,
      liveSyncDurationCount,
      lowLatencyMode
    } = this.config;
    const userConfig = this.hls.userConfig;
    let targetLatency = lowLatencyMode ? partHoldBack || holdBack : holdBack;
    if (this._targetLatencyUpdated || userConfig.liveSyncDuration || userConfig.liveSyncDurationCount || targetLatency === 0) {
      targetLatency = liveSyncDuration !== void 0 ? liveSyncDuration : liveSyncDurationCount * targetduration;
    }
    const maxLiveSyncOnStallIncrease = targetduration;
    return targetLatency + Math.min(this.stallCount * this.config.liveSyncOnStallIncrease, maxLiveSyncOnStallIncrease);
  }
  set targetLatency(latency) {
    this.stallCount = 0;
    this.config.liveSyncDuration = latency;
    this._targetLatencyUpdated = true;
  }
  get liveSyncPosition() {
    const liveEdge = this.estimateLiveEdge();
    const targetLatency = this.targetLatency;
    if (liveEdge === null || targetLatency === null) {
      return null;
    }
    const levelDetails = this.levelDetails;
    if (levelDetails === null) {
      return null;
    }
    const edge = levelDetails.edge;
    const syncPosition = liveEdge - targetLatency - this.edgeStalled;
    const min = edge - levelDetails.totalduration;
    const max = edge - (this.config.lowLatencyMode && levelDetails.partTarget || levelDetails.targetduration);
    return Math.min(Math.max(min, syncPosition), max);
  }
  get drift() {
    const levelDetails = this.levelDetails;
    if (levelDetails === null) {
      return 1;
    }
    return levelDetails.drift;
  }
  get edgeStalled() {
    const levelDetails = this.levelDetails;
    if (levelDetails === null) {
      return 0;
    }
    const maxLevelUpdateAge = (this.config.lowLatencyMode && levelDetails.partTarget || levelDetails.targetduration) * 3;
    return Math.max(levelDetails.age - maxLevelUpdateAge, 0);
  }
  get forwardBufferLength() {
    const {
      media
    } = this;
    const levelDetails = this.levelDetails;
    if (!media || !levelDetails) {
      return 0;
    }
    const bufferedRanges = media.buffered.length;
    return (bufferedRanges ? media.buffered.end(bufferedRanges - 1) : levelDetails.edge) - this.currentTime;
  }
  destroy() {
    this.unregisterListeners();
    this.onMediaDetaching();
    this.hls = null;
  }
  registerListeners() {
    const {
      hls
    } = this;
    if (!hls) {
      return;
    }
    hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    if (!hls) {
      return;
    }
    hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
    hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  onMediaAttached(event, data) {
    this.media = data.media;
    this.media.addEventListener("timeupdate", this.onTimeupdate);
  }
  onMediaDetaching() {
    if (this.media) {
      this.media.removeEventListener("timeupdate", this.onTimeupdate);
      this.media = null;
    }
  }
  onManifestLoading() {
    this._latency = null;
    this.stallCount = 0;
  }
  onLevelUpdated(event, {
    details
  }) {
    if (details.advanced) {
      this.onTimeupdate();
    }
    if (!details.live && this.media) {
      this.media.removeEventListener("timeupdate", this.onTimeupdate);
    }
  }
  onError(event, data) {
    var _this$levelDetails;
    if (data.details !== ErrorDetails.BUFFER_STALLED_ERROR) {
      return;
    }
    this.stallCount++;
    if (this.hls && (_this$levelDetails = this.levelDetails) != null && _this$levelDetails.live) {
      this.hls.logger.warn("[latency-controller]: Stall detected, adjusting target latency");
    }
  }
  changeMediaPlaybackRate(media, playbackRate) {
    var _this$hls2, _this$targetLatency;
    if (media.playbackRate === playbackRate) {
      return;
    }
    (_this$hls2 = this.hls) == null ? void 0 : _this$hls2.logger.debug(`[latency-controller]: latency=${this.latency.toFixed(3)}, targetLatency=${(_this$targetLatency = this.targetLatency) == null ? void 0 : _this$targetLatency.toFixed(3)}, forwardBufferLength=${this.forwardBufferLength.toFixed(3)}: adjusting playback rate from ${media.playbackRate} to ${playbackRate}`);
    media.playbackRate = playbackRate;
  }
  estimateLiveEdge() {
    const levelDetails = this.levelDetails;
    if (levelDetails === null) {
      return null;
    }
    return levelDetails.edge + levelDetails.age;
  }
  computeLatency() {
    const liveEdge = this.estimateLiveEdge();
    if (liveEdge === null) {
      return null;
    }
    return liveEdge - this.currentTime;
  }
};
var LevelController = class extends BasePlaylistController {
  constructor(hls, contentSteeringController) {
    super(hls, "level-controller");
    this._levels = [];
    this._firstLevel = -1;
    this._maxAutoLevel = -1;
    this._startLevel = void 0;
    this.currentLevel = null;
    this.currentLevelIndex = -1;
    this.manualLevelIndex = -1;
    this.steering = void 0;
    this.onParsedComplete = void 0;
    this.steering = contentSteeringController;
    this._registerListeners();
  }
  _registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.on(Events.ERROR, this.onError, this);
  }
  _unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
    hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
    hls.off(Events.ERROR, this.onError, this);
  }
  destroy() {
    this._unregisterListeners();
    this.steering = null;
    this.resetLevels();
    super.destroy();
  }
  stopLoad() {
    const levels = this._levels;
    levels.forEach((level) => {
      level.loadError = 0;
      level.fragmentError = 0;
    });
    super.stopLoad();
  }
  resetLevels() {
    this._startLevel = void 0;
    this.manualLevelIndex = -1;
    this.currentLevelIndex = -1;
    this.currentLevel = null;
    this._levels = [];
    this._maxAutoLevel = -1;
  }
  onManifestLoading(event, data) {
    this.resetLevels();
  }
  onManifestLoaded(event, data) {
    const preferManagedMediaSource = this.hls.config.preferManagedMediaSource;
    const levels = [];
    const redundantSet = {};
    const generatePathwaySet = {};
    let resolutionFound = false;
    let videoCodecFound = false;
    let audioCodecFound = false;
    data.levels.forEach((levelParsed) => {
      const attributes = levelParsed.attrs;
      let {
        audioCodec,
        videoCodec
      } = levelParsed;
      if (audioCodec) {
        levelParsed.audioCodec = audioCodec = getCodecCompatibleName(audioCodec, preferManagedMediaSource) || void 0;
      }
      if (videoCodec) {
        videoCodec = levelParsed.videoCodec = convertAVC1ToAVCOTI(videoCodec);
      }
      const {
        width,
        height,
        unknownCodecs
      } = levelParsed;
      let unknownUnsupportedCodecCount = unknownCodecs ? unknownCodecs.length : 0;
      if (unknownCodecs) {
        for (let i = unknownUnsupportedCodecCount; i--; ) {
          const unknownCodec = unknownCodecs[i];
          if (this.isAudioSupported(unknownCodec)) {
            levelParsed.audioCodec = audioCodec = audioCodec ? `${audioCodec},${unknownCodec}` : unknownCodec;
            unknownUnsupportedCodecCount--;
            sampleEntryCodesISO.audio[audioCodec.substring(0, 4)] = 2;
          } else if (this.isVideoSupported(unknownCodec)) {
            levelParsed.videoCodec = videoCodec = videoCodec ? `${videoCodec},${unknownCodec}` : unknownCodec;
            unknownUnsupportedCodecCount--;
            sampleEntryCodesISO.video[videoCodec.substring(0, 4)] = 2;
          }
        }
      }
      resolutionFound || (resolutionFound = !!(width && height));
      videoCodecFound || (videoCodecFound = !!videoCodec);
      audioCodecFound || (audioCodecFound = !!audioCodec);
      if (unknownUnsupportedCodecCount || audioCodec && !this.isAudioSupported(audioCodec) || videoCodec && !this.isVideoSupported(videoCodec)) {
        this.log(`Some or all CODECS not supported "${attributes.CODECS}"`);
        return;
      }
      const {
        CODECS,
        "FRAME-RATE": FRAMERATE,
        "HDCP-LEVEL": HDCP,
        "PATHWAY-ID": PATHWAY,
        RESOLUTION,
        "VIDEO-RANGE": VIDEO_RANGE
      } = attributes;
      const contentSteeringPrefix = `${PATHWAY || "."}-`;
      const levelKey = `${contentSteeringPrefix}${levelParsed.bitrate}-${RESOLUTION}-${FRAMERATE}-${CODECS}-${VIDEO_RANGE}-${HDCP}`;
      if (!redundantSet[levelKey]) {
        const level = this.createLevel(levelParsed);
        redundantSet[levelKey] = level;
        generatePathwaySet[levelKey] = 1;
        levels.push(level);
      } else if (redundantSet[levelKey].uri !== levelParsed.url && !levelParsed.attrs["PATHWAY-ID"]) {
        const pathwayCount = generatePathwaySet[levelKey] += 1;
        levelParsed.attrs["PATHWAY-ID"] = new Array(pathwayCount + 1).join(".");
        const level = this.createLevel(levelParsed);
        redundantSet[levelKey] = level;
        levels.push(level);
      } else {
        redundantSet[levelKey].addGroupId("audio", attributes.AUDIO);
        redundantSet[levelKey].addGroupId("text", attributes.SUBTITLES);
      }
    });
    this.filterAndSortMediaOptions(levels, data, resolutionFound, videoCodecFound, audioCodecFound);
  }
  createLevel(levelParsed) {
    const level = new Level(levelParsed);
    const supplemental = levelParsed.supplemental;
    if (supplemental != null && supplemental.videoCodec && !this.isVideoSupported(supplemental.videoCodec)) {
      const error = new Error(`SUPPLEMENTAL-CODECS not supported "${supplemental.videoCodec}"`);
      this.log(error.message);
      level.supportedResult = getUnsupportedResult(error, []);
    }
    return level;
  }
  isAudioSupported(codec) {
    return areCodecsMediaSourceSupported(codec, "audio", this.hls.config.preferManagedMediaSource);
  }
  isVideoSupported(codec) {
    return areCodecsMediaSourceSupported(codec, "video", this.hls.config.preferManagedMediaSource);
  }
  filterAndSortMediaOptions(filteredLevels, data, resolutionFound, videoCodecFound, audioCodecFound) {
    let audioTracks = [];
    let subtitleTracks = [];
    let levels = filteredLevels;
    if ((resolutionFound || videoCodecFound) && audioCodecFound) {
      levels = levels.filter(({
        videoCodec,
        videoRange,
        width,
        height
      }) => (!!videoCodec || !!(width && height)) && isVideoRange(videoRange));
    }
    if (levels.length === 0) {
      Promise.resolve().then(() => {
        if (this.hls) {
          let message = "no level with compatible codecs found in manifest";
          let reason = message;
          if (data.levels.length) {
            reason = `one or more CODECS in variant not supported: ${stringify(data.levels.map((level) => level.attrs.CODECS).filter((value, index, array) => array.indexOf(value) === index))}`;
            this.warn(reason);
            message += ` (${reason})`;
          }
          const error = new Error(message);
          this.hls.trigger(Events.ERROR, {
            type: ErrorTypes.MEDIA_ERROR,
            details: ErrorDetails.MANIFEST_INCOMPATIBLE_CODECS_ERROR,
            fatal: true,
            url: data.url,
            error,
            reason
          });
        }
      });
      return;
    }
    if (data.audioTracks) {
      audioTracks = data.audioTracks.filter((track) => !track.audioCodec || this.isAudioSupported(track.audioCodec));
      assignTrackIdsByGroup(audioTracks);
    }
    if (data.subtitles) {
      subtitleTracks = data.subtitles;
      assignTrackIdsByGroup(subtitleTracks);
    }
    const unsortedLevels = levels.slice(0);
    levels.sort((a, b) => {
      if (a.attrs["HDCP-LEVEL"] !== b.attrs["HDCP-LEVEL"]) {
        return (a.attrs["HDCP-LEVEL"] || "") > (b.attrs["HDCP-LEVEL"] || "") ? 1 : -1;
      }
      if (resolutionFound && a.height !== b.height) {
        return a.height - b.height;
      }
      if (a.frameRate !== b.frameRate) {
        return a.frameRate - b.frameRate;
      }
      if (a.videoRange !== b.videoRange) {
        return VideoRangeValues.indexOf(a.videoRange) - VideoRangeValues.indexOf(b.videoRange);
      }
      if (a.videoCodec !== b.videoCodec) {
        const valueA = videoCodecPreferenceValue(a.videoCodec);
        const valueB = videoCodecPreferenceValue(b.videoCodec);
        if (valueA !== valueB) {
          return valueB - valueA;
        }
      }
      if (a.uri === b.uri && a.codecSet !== b.codecSet) {
        const valueA = codecsSetSelectionPreferenceValue(a.codecSet);
        const valueB = codecsSetSelectionPreferenceValue(b.codecSet);
        if (valueA !== valueB) {
          return valueB - valueA;
        }
      }
      if (a.averageBitrate !== b.averageBitrate) {
        return a.averageBitrate - b.averageBitrate;
      }
      return 0;
    });
    let firstLevelInPlaylist = unsortedLevels[0];
    if (this.steering) {
      levels = this.steering.filterParsedLevels(levels);
      if (levels.length !== unsortedLevels.length) {
        for (let i = 0; i < unsortedLevels.length; i++) {
          if (unsortedLevels[i].pathwayId === levels[0].pathwayId) {
            firstLevelInPlaylist = unsortedLevels[i];
            break;
          }
        }
      }
    }
    this._levels = levels;
    for (let i = 0; i < levels.length; i++) {
      if (levels[i] === firstLevelInPlaylist) {
        var _this$hls$userConfig;
        this._firstLevel = i;
        const firstLevelBitrate = firstLevelInPlaylist.bitrate;
        const bandwidthEstimate = this.hls.bandwidthEstimate;
        this.log(`manifest loaded, ${levels.length} level(s) found, first bitrate: ${firstLevelBitrate}`);
        if (((_this$hls$userConfig = this.hls.userConfig) == null ? void 0 : _this$hls$userConfig.abrEwmaDefaultEstimate) === void 0) {
          const startingBwEstimate = Math.min(firstLevelBitrate, this.hls.config.abrEwmaDefaultEstimateMax);
          if (startingBwEstimate > bandwidthEstimate && bandwidthEstimate === this.hls.abrEwmaDefaultEstimate) {
            this.hls.bandwidthEstimate = startingBwEstimate;
          }
        }
        break;
      }
    }
    const audioOnly = audioCodecFound && !videoCodecFound;
    const config = this.hls.config;
    const altAudioEnabled = !!(config.audioStreamController && config.audioTrackController);
    const edata = {
      levels,
      audioTracks,
      subtitleTracks,
      sessionData: data.sessionData,
      sessionKeys: data.sessionKeys,
      firstLevel: this._firstLevel,
      stats: data.stats,
      audio: audioCodecFound,
      video: videoCodecFound,
      altAudio: altAudioEnabled && !audioOnly && audioTracks.some((t) => !!t.url)
    };
    this.hls.trigger(Events.MANIFEST_PARSED, edata);
  }
  get levels() {
    if (this._levels.length === 0) {
      return null;
    }
    return this._levels;
  }
  get loadLevelObj() {
    return this.currentLevel;
  }
  get level() {
    return this.currentLevelIndex;
  }
  set level(newLevel) {
    const levels = this._levels;
    if (levels.length === 0) {
      return;
    }
    if (newLevel < 0 || newLevel >= levels.length) {
      const error = new Error("invalid level idx");
      const fatal = newLevel < 0;
      this.hls.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.LEVEL_SWITCH_ERROR,
        level: newLevel,
        fatal,
        error,
        reason: error.message
      });
      if (fatal) {
        return;
      }
      newLevel = Math.min(newLevel, levels.length - 1);
    }
    const lastLevelIndex = this.currentLevelIndex;
    const lastLevel = this.currentLevel;
    const lastPathwayId = lastLevel ? lastLevel.attrs["PATHWAY-ID"] : void 0;
    const level = levels[newLevel];
    const pathwayId = level.attrs["PATHWAY-ID"];
    this.currentLevelIndex = newLevel;
    this.currentLevel = level;
    if (lastLevelIndex === newLevel && lastLevel && lastPathwayId === pathwayId) {
      return;
    }
    this.log(`Switching to level ${newLevel} (${level.height ? level.height + "p " : ""}${level.videoRange ? level.videoRange + " " : ""}${level.codecSet ? level.codecSet + " " : ""}@${level.bitrate})${pathwayId ? " with Pathway " + pathwayId : ""} from level ${lastLevelIndex}${lastPathwayId ? " with Pathway " + lastPathwayId : ""}`);
    const levelSwitchingData = {
      level: newLevel,
      attrs: level.attrs,
      details: level.details,
      bitrate: level.bitrate,
      averageBitrate: level.averageBitrate,
      maxBitrate: level.maxBitrate,
      realBitrate: level.realBitrate,
      width: level.width,
      height: level.height,
      codecSet: level.codecSet,
      audioCodec: level.audioCodec,
      videoCodec: level.videoCodec,
      audioGroups: level.audioGroups,
      subtitleGroups: level.subtitleGroups,
      loaded: level.loaded,
      loadError: level.loadError,
      fragmentError: level.fragmentError,
      name: level.name,
      id: level.id,
      uri: level.uri,
      url: level.url,
      urlId: 0,
      audioGroupIds: level.audioGroupIds,
      textGroupIds: level.textGroupIds
    };
    this.hls.trigger(Events.LEVEL_SWITCHING, levelSwitchingData);
    const levelDetails = level.details;
    if (!levelDetails || levelDetails.live) {
      const hlsUrlParameters = this.switchParams(level.uri, lastLevel == null ? void 0 : lastLevel.details, levelDetails);
      this.loadPlaylist(hlsUrlParameters);
    }
  }
  get manualLevel() {
    return this.manualLevelIndex;
  }
  set manualLevel(newLevel) {
    this.manualLevelIndex = newLevel;
    if (this._startLevel === void 0) {
      this._startLevel = newLevel;
    }
    if (newLevel !== -1) {
      this.level = newLevel;
    }
  }
  get firstLevel() {
    return this._firstLevel;
  }
  set firstLevel(newLevel) {
    this._firstLevel = newLevel;
  }
  get startLevel() {
    if (this._startLevel === void 0) {
      const configStartLevel = this.hls.config.startLevel;
      if (configStartLevel !== void 0) {
        return configStartLevel;
      }
      return this.hls.firstAutoLevel;
    }
    return this._startLevel;
  }
  set startLevel(newLevel) {
    this._startLevel = newLevel;
  }
  get pathways() {
    if (this.steering) {
      return this.steering.pathways();
    }
    return [];
  }
  get pathwayPriority() {
    if (this.steering) {
      return this.steering.pathwayPriority;
    }
    return null;
  }
  set pathwayPriority(pathwayPriority) {
    if (this.steering) {
      const pathwaysList = this.steering.pathways();
      const filteredPathwayPriority = pathwayPriority.filter((pathwayId) => {
        return pathwaysList.indexOf(pathwayId) !== -1;
      });
      if (pathwayPriority.length < 1) {
        this.warn(`pathwayPriority ${pathwayPriority} should contain at least one pathway from list: ${pathwaysList}`);
        return;
      }
      this.steering.pathwayPriority = filteredPathwayPriority;
    }
  }
  onError(event, data) {
    if (data.fatal || !data.context) {
      return;
    }
    if (data.context.type === PlaylistContextType.LEVEL && data.context.level === this.level) {
      this.checkRetry(data);
    }
  }
  onFragBuffered(event, {
    frag
  }) {
    if (frag !== void 0 && frag.type === PlaylistLevelType.MAIN) {
      const el = frag.elementaryStreams;
      if (!Object.keys(el).some((type) => !!el[type])) {
        return;
      }
      const level = this._levels[frag.level];
      if (level != null && level.loadError) {
        this.log(`Resetting level error count of ${level.loadError} on frag buffered`);
        level.loadError = 0;
      }
    }
  }
  onLevelLoaded(event, data) {
    var _data$deliveryDirecti2;
    const {
      level,
      details
    } = data;
    const curLevel = data.levelInfo;
    if (!curLevel) {
      var _data$deliveryDirecti;
      this.warn(`Invalid level index ${level}`);
      if ((_data$deliveryDirecti = data.deliveryDirectives) != null && _data$deliveryDirecti.skip) {
        details.deltaUpdateFailed = true;
      }
      return;
    }
    if (curLevel === this.currentLevel || data.withoutMultiVariant) {
      if (curLevel.fragmentError === 0) {
        curLevel.loadError = 0;
      }
      let previousDetails = curLevel.details;
      if (previousDetails === data.details && previousDetails.advanced) {
        previousDetails = void 0;
      }
      this.playlistLoaded(level, data, previousDetails);
    } else if ((_data$deliveryDirecti2 = data.deliveryDirectives) != null && _data$deliveryDirecti2.skip) {
      details.deltaUpdateFailed = true;
    }
  }
  loadPlaylist(hlsUrlParameters) {
    super.loadPlaylist();
    if (this.shouldLoadPlaylist(this.currentLevel)) {
      this.scheduleLoading(this.currentLevel, hlsUrlParameters);
    }
  }
  loadingPlaylist(currentLevel, hlsUrlParameters) {
    super.loadingPlaylist(currentLevel, hlsUrlParameters);
    const url = this.getUrlWithDirectives(currentLevel.uri, hlsUrlParameters);
    const currentLevelIndex = this.currentLevelIndex;
    const pathwayId = currentLevel.attrs["PATHWAY-ID"];
    const details = currentLevel.details;
    const age = details == null ? void 0 : details.age;
    this.log(`Loading level index ${currentLevelIndex}${(hlsUrlParameters == null ? void 0 : hlsUrlParameters.msn) !== void 0 ? " at sn " + hlsUrlParameters.msn + " part " + hlsUrlParameters.part : ""}${pathwayId ? " Pathway " + pathwayId : ""}${age && details.live ? " age " + age.toFixed(1) + (details.type ? " " + details.type || "" : "") : ""} ${url}`);
    this.hls.trigger(Events.LEVEL_LOADING, {
      url,
      level: currentLevelIndex,
      levelInfo: currentLevel,
      pathwayId: currentLevel.attrs["PATHWAY-ID"],
      id: 0,
      deliveryDirectives: hlsUrlParameters || null
    });
  }
  get nextLoadLevel() {
    if (this.manualLevelIndex !== -1) {
      return this.manualLevelIndex;
    } else {
      return this.hls.nextAutoLevel;
    }
  }
  set nextLoadLevel(nextLevel) {
    this.level = nextLevel;
    if (this.manualLevelIndex === -1) {
      this.hls.nextAutoLevel = nextLevel;
    }
  }
  removeLevel(levelIndex) {
    var _this$currentLevel;
    if (this._levels.length === 1) {
      return;
    }
    const levels = this._levels.filter((level, index) => {
      if (index !== levelIndex) {
        return true;
      }
      if (this.steering) {
        this.steering.removeLevel(level);
      }
      if (level === this.currentLevel) {
        this.currentLevel = null;
        this.currentLevelIndex = -1;
        if (level.details) {
          level.details.fragments.forEach((f) => f.level = -1);
        }
      }
      return false;
    });
    reassignFragmentLevelIndexes(levels);
    this._levels = levels;
    if (this.currentLevelIndex > -1 && (_this$currentLevel = this.currentLevel) != null && _this$currentLevel.details) {
      this.currentLevelIndex = this.currentLevel.details.fragments[0].level;
    }
    if (this.manualLevelIndex > -1) {
      this.manualLevelIndex = this.currentLevelIndex;
    }
    const maxLevel = levels.length - 1;
    this._firstLevel = Math.min(this._firstLevel, maxLevel);
    if (this._startLevel) {
      this._startLevel = Math.min(this._startLevel, maxLevel);
    }
    this.hls.trigger(Events.LEVELS_UPDATED, {
      levels
    });
  }
  onLevelsUpdated(event, {
    levels
  }) {
    this._levels = levels;
  }
  checkMaxAutoUpdated() {
    const {
      autoLevelCapping,
      maxAutoLevel,
      maxHdcpLevel
    } = this.hls;
    if (this._maxAutoLevel !== maxAutoLevel) {
      this._maxAutoLevel = maxAutoLevel;
      this.hls.trigger(Events.MAX_AUTO_LEVEL_UPDATED, {
        autoLevelCapping,
        levels: this.levels,
        maxAutoLevel,
        minAutoLevel: this.hls.minAutoLevel,
        maxHdcpLevel
      });
    }
  }
};
function assignTrackIdsByGroup(tracks) {
  const groups = {};
  tracks.forEach((track) => {
    const groupId = track.groupId || "";
    track.id = groups[groupId] = groups[groupId] || 0;
    groups[groupId]++;
  });
}
function getSourceBuffer() {
  return self.SourceBuffer || self.WebKitSourceBuffer;
}
function isMSESupported() {
  const mediaSource = getMediaSource();
  if (!mediaSource) {
    return false;
  }
  const sourceBuffer = getSourceBuffer();
  return !sourceBuffer || sourceBuffer.prototype && typeof sourceBuffer.prototype.appendBuffer === "function" && typeof sourceBuffer.prototype.remove === "function";
}
function isSupported() {
  if (!isMSESupported()) {
    return false;
  }
  const mediaSource = getMediaSource();
  return typeof (mediaSource == null ? void 0 : mediaSource.isTypeSupported) === "function" && (["avc1.42E01E,mp4a.40.2", "av01.0.01M.08", "vp09.00.50.08"].some((codecsForVideoContainer) => mediaSource.isTypeSupported(mimeTypeForCodec(codecsForVideoContainer, "video"))) || ["mp4a.40.2", "fLaC"].some((codecForAudioContainer) => mediaSource.isTypeSupported(mimeTypeForCodec(codecForAudioContainer, "audio"))));
}
function changeTypeSupported() {
  var _sourceBuffer$prototy;
  const sourceBuffer = getSourceBuffer();
  return typeof (sourceBuffer == null ? void 0 : (_sourceBuffer$prototy = sourceBuffer.prototype) == null ? void 0 : _sourceBuffer$prototy.changeType) === "function";
}
var TICK_INTERVAL = 100;
var StreamController = class extends BaseStreamController {
  constructor(hls, fragmentTracker, keyLoader) {
    super(hls, fragmentTracker, keyLoader, "stream-controller", PlaylistLevelType.MAIN);
    this.audioCodecSwap = false;
    this.level = -1;
    this._forceStartLoad = false;
    this._hasEnoughToStart = false;
    this.altAudio = 0;
    this.audioOnly = false;
    this.fragPlaying = null;
    this.fragLastKbps = 0;
    this.couldBacktrack = false;
    this.backtrackFragment = null;
    this.audioCodecSwitch = false;
    this.videoBuffer = null;
    this.onMediaPlaying = () => {
      this.tick();
    };
    this.onMediaSeeked = () => {
      const media = this.media;
      const currentTime = media ? media.currentTime : null;
      if (currentTime === null || !isFiniteNumber(currentTime)) {
        return;
      }
      this.log(`Media seeked to ${currentTime.toFixed(3)}`);
      if (!this.getBufferedFrag(currentTime)) {
        return;
      }
      const bufferInfo = this.getFwdBufferInfoAtPos(media, currentTime, PlaylistLevelType.MAIN, 0);
      if (bufferInfo === null || bufferInfo.len === 0) {
        this.warn(`Main forward buffer length at ${currentTime} on "seeked" event ${bufferInfo ? bufferInfo.len : "empty"})`);
        return;
      }
      this.tick();
    };
    this.registerListeners();
  }
  registerListeners() {
    super.registerListeners();
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.on(Events.FRAG_LOAD_EMERGENCY_ABORTED, this.onFragLoadEmergencyAborted, this);
    hls.on(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.on(Events.AUDIO_TRACK_SWITCHED, this.onAudioTrackSwitched, this);
    hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
    hls.on(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
  }
  unregisterListeners() {
    super.unregisterListeners();
    const {
      hls
    } = this;
    hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
    hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
    hls.off(Events.FRAG_LOAD_EMERGENCY_ABORTED, this.onFragLoadEmergencyAborted, this);
    hls.off(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
    hls.off(Events.AUDIO_TRACK_SWITCHED, this.onAudioTrackSwitched, this);
    hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
    hls.off(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
    hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
    hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
  }
  onHandlerDestroying() {
    this.onMediaPlaying = this.onMediaSeeked = null;
    this.unregisterListeners();
    super.onHandlerDestroying();
  }
  startLoad(startPosition, skipSeekToStartPosition) {
    if (this.levels) {
      const {
        lastCurrentTime,
        hls
      } = this;
      this.stopLoad();
      this.setInterval(TICK_INTERVAL);
      this.level = -1;
      if (!this.startFragRequested) {
        let startLevel = hls.startLevel;
        if (startLevel === -1) {
          if (hls.config.testBandwidth && this.levels.length > 1) {
            startLevel = 0;
            this.bitrateTest = true;
          } else {
            startLevel = hls.firstAutoLevel;
          }
        }
        hls.nextLoadLevel = startLevel;
        this.level = hls.loadLevel;
        this._hasEnoughToStart = !!skipSeekToStartPosition;
      }
      if (lastCurrentTime > 0 && startPosition === -1 && !skipSeekToStartPosition) {
        this.log(`Override startPosition with lastCurrentTime @${lastCurrentTime.toFixed(3)}`);
        startPosition = lastCurrentTime;
      }
      this.state = State.IDLE;
      this.nextLoadPosition = this.lastCurrentTime = startPosition + this.timelineOffset;
      this.startPosition = skipSeekToStartPosition ? -1 : startPosition;
      this.tick();
    } else {
      this._forceStartLoad = true;
      this.state = State.STOPPED;
    }
  }
  stopLoad() {
    this._forceStartLoad = false;
    super.stopLoad();
  }
  doTick() {
    switch (this.state) {
      case State.WAITING_LEVEL: {
        const {
          levels,
          level
        } = this;
        const currentLevel = levels == null ? void 0 : levels[level];
        const details = currentLevel == null ? void 0 : currentLevel.details;
        if (details && (!details.live || this.levelLastLoaded === currentLevel && !this.waitForLive(currentLevel))) {
          if (this.waitForCdnTuneIn(details)) {
            break;
          }
          this.state = State.IDLE;
          break;
        } else if (this.hls.nextLoadLevel !== this.level) {
          this.state = State.IDLE;
          break;
        }
        break;
      }
      case State.FRAG_LOADING_WAITING_RETRY:
        {
          var _this$media;
          const now2 = self.performance.now();
          const retryDate = this.retryDate;
          if (!retryDate || now2 >= retryDate || (_this$media = this.media) != null && _this$media.seeking) {
            const {
              levels,
              level
            } = this;
            const currentLevel = levels == null ? void 0 : levels[level];
            this.resetStartWhenNotLoaded(currentLevel || null);
            this.state = State.IDLE;
          }
        }
        break;
    }
    if (this.state === State.IDLE) {
      this.doTickIdle();
    }
    this.onTickEnd();
  }
  onTickEnd() {
    var _this$media2;
    super.onTickEnd();
    if ((_this$media2 = this.media) != null && _this$media2.readyState && this.media.seeking === false) {
      this.lastCurrentTime = this.media.currentTime;
    }
    this.checkFragmentChanged();
  }
  doTickIdle() {
    const {
      hls,
      levelLastLoaded,
      levels,
      media
    } = this;
    if (levelLastLoaded === null || !media && !this.primaryPrefetch && (this.startFragRequested || !hls.config.startFragPrefetch)) {
      return;
    }
    if (this.altAudio && this.audioOnly) {
      return;
    }
    const level = this.buffering ? hls.nextLoadLevel : hls.loadLevel;
    if (!(levels != null && levels[level])) {
      return;
    }
    const levelInfo = levels[level];
    const bufferInfo = this.getMainFwdBufferInfo();
    if (bufferInfo === null) {
      return;
    }
    const lastDetails = this.getLevelDetails();
    if (lastDetails && this._streamEnded(bufferInfo, lastDetails)) {
      const data = {};
      if (this.altAudio === 2) {
        data.type = "video";
      }
      this.hls.trigger(Events.BUFFER_EOS, data);
      this.state = State.ENDED;
      return;
    }
    if (!this.buffering) {
      return;
    }
    if (hls.loadLevel !== level && hls.manualLevel === -1) {
      this.log(`Adapting to level ${level} from level ${this.level}`);
    }
    this.level = hls.nextLoadLevel = level;
    const levelDetails = levelInfo.details;
    if (!levelDetails || this.state === State.WAITING_LEVEL || this.waitForLive(levelInfo)) {
      this.level = level;
      this.state = State.WAITING_LEVEL;
      this.startFragRequested = false;
      return;
    }
    const bufferLen = bufferInfo.len;
    const maxBufLen = this.getMaxBufferLength(levelInfo.maxBitrate);
    if (bufferLen >= maxBufLen) {
      return;
    }
    if (this.backtrackFragment && this.backtrackFragment.start > bufferInfo.end) {
      this.backtrackFragment = null;
    }
    const targetBufferTime = this.backtrackFragment ? this.backtrackFragment.start : bufferInfo.end;
    let frag = this.getNextFragment(targetBufferTime, levelDetails);
    if (this.couldBacktrack && !this.fragPrevious && frag && isMediaFragment(frag) && this.fragmentTracker.getState(frag) !== FragmentState.OK) {
      var _this$backtrackFragme;
      const backtrackSn = ((_this$backtrackFragme = this.backtrackFragment) != null ? _this$backtrackFragme : frag).sn;
      const fragIdx = backtrackSn - levelDetails.startSN;
      const backtrackFrag = levelDetails.fragments[fragIdx - 1];
      if (backtrackFrag && frag.cc === backtrackFrag.cc) {
        frag = backtrackFrag;
        this.fragmentTracker.removeFragment(backtrackFrag);
      }
    } else if (this.backtrackFragment && bufferInfo.len) {
      this.backtrackFragment = null;
    }
    if (frag && this.isLoopLoading(frag, targetBufferTime)) {
      const gapStart = frag.gap;
      if (!gapStart) {
        const type = this.audioOnly && !this.altAudio ? ElementaryStreamTypes.AUDIO : ElementaryStreamTypes.VIDEO;
        const mediaBuffer = (type === ElementaryStreamTypes.VIDEO ? this.videoBuffer : this.mediaBuffer) || this.media;
        if (mediaBuffer) {
          this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.MAIN);
        }
      }
      frag = this.getNextFragmentLoopLoading(frag, levelDetails, bufferInfo, PlaylistLevelType.MAIN, maxBufLen);
    }
    if (!frag) {
      return;
    }
    if (frag.initSegment && !frag.initSegment.data && !this.bitrateTest) {
      frag = frag.initSegment;
    }
    this.loadFragment(frag, levelInfo, targetBufferTime);
  }
  loadFragment(frag, level, targetBufferTime) {
    const fragState = this.fragmentTracker.getState(frag);
    if (fragState === FragmentState.NOT_LOADED || fragState === FragmentState.PARTIAL) {
      if (!isMediaFragment(frag)) {
        this._loadInitSegment(frag, level);
      } else if (this.bitrateTest) {
        this.log(`Fragment ${frag.sn} of level ${frag.level} is being downloaded to test bitrate and will not be buffered`);
        this._loadBitrateTestFrag(frag, level);
      } else {
        super.loadFragment(frag, level, targetBufferTime);
      }
    } else {
      this.clearTrackerIfNeeded(frag);
    }
  }
  getBufferedFrag(position) {
    return this.fragmentTracker.getBufferedFrag(position, PlaylistLevelType.MAIN);
  }
  followingBufferedFrag(frag) {
    if (frag) {
      return this.getBufferedFrag(frag.end + 0.5);
    }
    return null;
  }
  immediateLevelSwitch() {
    this.abortCurrentFrag();
    this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
  }
  nextLevelSwitch() {
    const {
      levels,
      media
    } = this;
    if (media != null && media.readyState) {
      let fetchdelay;
      const fragPlayingCurrent = this.getAppendedFrag(media.currentTime);
      if (fragPlayingCurrent && fragPlayingCurrent.start > 1) {
        this.flushMainBuffer(0, fragPlayingCurrent.start - 1);
      }
      const levelDetails = this.getLevelDetails();
      if (levelDetails != null && levelDetails.live) {
        const bufferInfo = this.getMainFwdBufferInfo();
        if (!bufferInfo || bufferInfo.len < levelDetails.targetduration * 2) {
          return;
        }
      }
      if (!media.paused && levels) {
        const nextLevelId = this.hls.nextLoadLevel;
        const nextLevel = levels[nextLevelId];
        const fragLastKbps = this.fragLastKbps;
        if (fragLastKbps && this.fragCurrent) {
          fetchdelay = this.fragCurrent.duration * nextLevel.maxBitrate / (1e3 * fragLastKbps) + 1;
        } else {
          fetchdelay = 0;
        }
      } else {
        fetchdelay = 0;
      }
      const bufferedFrag = this.getBufferedFrag(media.currentTime + fetchdelay);
      if (bufferedFrag) {
        const nextBufferedFrag = this.followingBufferedFrag(bufferedFrag);
        if (nextBufferedFrag) {
          this.abortCurrentFrag();
          const maxStart = nextBufferedFrag.maxStartPTS ? nextBufferedFrag.maxStartPTS : nextBufferedFrag.start;
          const fragDuration = nextBufferedFrag.duration;
          const startPts = Math.max(bufferedFrag.end, maxStart + Math.min(Math.max(fragDuration - this.config.maxFragLookUpTolerance, fragDuration * (this.couldBacktrack ? 0.5 : 0.125)), fragDuration * (this.couldBacktrack ? 0.75 : 0.25)));
          this.flushMainBuffer(startPts, Number.POSITIVE_INFINITY);
        }
      }
    }
  }
  abortCurrentFrag() {
    const fragCurrent = this.fragCurrent;
    this.fragCurrent = null;
    this.backtrackFragment = null;
    if (fragCurrent) {
      fragCurrent.abortRequests();
      this.fragmentTracker.removeFragment(fragCurrent);
    }
    switch (this.state) {
      case State.KEY_LOADING:
      case State.FRAG_LOADING:
      case State.FRAG_LOADING_WAITING_RETRY:
      case State.PARSING:
      case State.PARSED:
        this.state = State.IDLE;
        break;
    }
    this.nextLoadPosition = this.getLoadPosition();
  }
  flushMainBuffer(startOffset, endOffset) {
    super.flushMainBuffer(startOffset, endOffset, this.altAudio === 2 ? "video" : null);
  }
  onMediaAttached(event, data) {
    super.onMediaAttached(event, data);
    const media = data.media;
    addEventListener(media, "playing", this.onMediaPlaying);
    addEventListener(media, "seeked", this.onMediaSeeked);
  }
  onMediaDetaching(event, data) {
    const {
      media
    } = this;
    if (media) {
      removeEventListener(media, "playing", this.onMediaPlaying);
      removeEventListener(media, "seeked", this.onMediaSeeked);
    }
    this.videoBuffer = null;
    this.fragPlaying = null;
    super.onMediaDetaching(event, data);
    const transferringMedia = !!data.transferMedia;
    if (transferringMedia) {
      return;
    }
    this._hasEnoughToStart = false;
  }
  onManifestLoading() {
    super.onManifestLoading();
    this.log("Trigger BUFFER_RESET");
    this.hls.trigger(Events.BUFFER_RESET, void 0);
    this.couldBacktrack = false;
    this.fragLastKbps = 0;
    this.fragPlaying = this.backtrackFragment = null;
    this.altAudio = 0;
    this.audioOnly = false;
  }
  onManifestParsed(event, data) {
    let aac = false;
    let heaac = false;
    data.levels.forEach((level) => {
      const codec = level.audioCodec;
      if (codec) {
        aac = aac || codec.indexOf("mp4a.40.2") !== -1;
        heaac = heaac || codec.indexOf("mp4a.40.5") !== -1;
      }
    });
    this.audioCodecSwitch = aac && heaac && !changeTypeSupported();
    if (this.audioCodecSwitch) {
      this.log("Both AAC/HE-AAC audio found in levels; declaring level codec as HE-AAC");
    }
    this.levels = data.levels;
    this.startFragRequested = false;
  }
  onLevelLoading(event, data) {
    const {
      levels
    } = this;
    if (!levels || this.state !== State.IDLE) {
      return;
    }
    const level = data.levelInfo;
    if (!level.details || level.details.live && (this.levelLastLoaded !== level || level.details.expired) || this.waitForCdnTuneIn(level.details)) {
      this.state = State.WAITING_LEVEL;
    }
  }
  onLevelLoaded(event, data) {
    var _curLevel$details;
    const {
      levels,
      startFragRequested
    } = this;
    const newLevelId = data.level;
    const newDetails = data.details;
    const duration = newDetails.totalduration;
    if (!levels) {
      this.warn(`Levels were reset while loading level ${newLevelId}`);
      return;
    }
    this.log(`Level ${newLevelId} loaded [${newDetails.startSN},${newDetails.endSN}]${newDetails.lastPartSn ? `[part-${newDetails.lastPartSn}-${newDetails.lastPartIndex}]` : ""}, cc [${newDetails.startCC}, ${newDetails.endCC}] duration:${duration}`);
    const curLevel = data.levelInfo;
    const fragCurrent = this.fragCurrent;
    if (fragCurrent && (this.state === State.FRAG_LOADING || this.state === State.FRAG_LOADING_WAITING_RETRY)) {
      if (fragCurrent.level !== data.level && fragCurrent.loader) {
        this.abortCurrentFrag();
      }
    }
    let sliding = 0;
    if (newDetails.live || (_curLevel$details = curLevel.details) != null && _curLevel$details.live) {
      var _this$levelLastLoaded;
      this.checkLiveUpdate(newDetails);
      if (newDetails.deltaUpdateFailed) {
        return;
      }
      sliding = this.alignPlaylists(newDetails, curLevel.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
    }
    curLevel.details = newDetails;
    this.levelLastLoaded = curLevel;
    if (!startFragRequested) {
      this.setStartPosition(newDetails, sliding);
    }
    this.hls.trigger(Events.LEVEL_UPDATED, {
      details: newDetails,
      level: newLevelId
    });
    if (this.state === State.WAITING_LEVEL) {
      if (this.waitForCdnTuneIn(newDetails)) {
        return;
      }
      this.state = State.IDLE;
    }
    if (startFragRequested && newDetails.live) {
      this.synchronizeToLiveEdge(newDetails);
    }
    this.tick();
  }
  synchronizeToLiveEdge(levelDetails) {
    const {
      config,
      media
    } = this;
    if (!media) {
      return;
    }
    const liveSyncPosition = this.hls.liveSyncPosition;
    const currentTime = this.getLoadPosition();
    const start = levelDetails.fragmentStart;
    const end = levelDetails.edge;
    const withinSlidingWindow = currentTime >= start - config.maxFragLookUpTolerance && currentTime <= end;
    if (liveSyncPosition !== null && media.duration > liveSyncPosition && (currentTime < liveSyncPosition || !withinSlidingWindow)) {
      const maxLatency = config.liveMaxLatencyDuration !== void 0 ? config.liveMaxLatencyDuration : config.liveMaxLatencyDurationCount * levelDetails.targetduration;
      if (!withinSlidingWindow && media.readyState < 4 || currentTime < end - maxLatency) {
        if (!this._hasEnoughToStart) {
          this.nextLoadPosition = liveSyncPosition;
        }
        if (media.readyState) {
          this.warn(`Playback: ${currentTime.toFixed(3)} is located too far from the end of live sliding playlist: ${end}, reset currentTime to : ${liveSyncPosition.toFixed(3)}`);
          if (this.config.liveSyncMode === "buffered") {
            var _bufferInfo$buffered;
            const bufferInfo = BufferHelper.bufferInfo(media, liveSyncPosition, 0);
            if (!(bufferInfo != null && (_bufferInfo$buffered = bufferInfo.buffered) != null && _bufferInfo$buffered.length)) {
              media.currentTime = liveSyncPosition;
              return;
            }
            const isLiveSyncInBuffer = bufferInfo.start <= currentTime;
            if (isLiveSyncInBuffer) {
              media.currentTime = liveSyncPosition;
              return;
            }
            const {
              nextStart
            } = BufferHelper.bufferedInfo(bufferInfo.buffered, currentTime, 0);
            if (nextStart) {
              media.currentTime = nextStart;
            }
          } else {
            media.currentTime = liveSyncPosition;
          }
        }
      }
    }
  }
  _handleFragmentLoadProgress(data) {
    var _frag$initSegment;
    const frag = data.frag;
    const {
      part,
      payload
    } = data;
    const {
      levels
    } = this;
    if (!levels) {
      this.warn(`Levels were reset while fragment load was in progress. Fragment ${frag.sn} of level ${frag.level} will not be buffered`);
      return;
    }
    const currentLevel = levels[frag.level];
    if (!currentLevel) {
      this.warn(`Level ${frag.level} not found on progress`);
      return;
    }
    const details = currentLevel.details;
    if (!details) {
      this.warn(`Dropping fragment ${frag.sn} of level ${frag.level} after level details were reset`);
      this.fragmentTracker.removeFragment(frag);
      return;
    }
    const videoCodec = currentLevel.videoCodec;
    const accurateTimeOffset = details.PTSKnown || !details.live;
    const initSegmentData = (_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.data;
    const audioCodec = this._getAudioCodec(currentLevel);
    const transmuxer = this.transmuxer = this.transmuxer || new TransmuxerInterface(this.hls, PlaylistLevelType.MAIN, this._handleTransmuxComplete.bind(this), this._handleTransmuxerFlush.bind(this));
    const partIndex = part ? part.index : -1;
    const partial = partIndex !== -1;
    const chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount, payload.byteLength, partIndex, partial);
    const initPTS = this.initPTS[frag.cc];
    transmuxer.push(payload, initSegmentData, audioCodec, videoCodec, frag, part, details.totalduration, accurateTimeOffset, chunkMeta, initPTS);
  }
  onAudioTrackSwitching(event, data) {
    const hls = this.hls;
    const fromAltAudio = this.altAudio === 2;
    const altAudio = useAlternateAudio(data.url, hls);
    if (!altAudio) {
      if (this.mediaBuffer !== this.media) {
        this.log("Switching on main audio, use media.buffered to schedule main fragment loading");
        this.mediaBuffer = this.media;
        const fragCurrent = this.fragCurrent;
        if (fragCurrent) {
          this.log("Switching to main audio track, cancel main fragment load");
          fragCurrent.abortRequests();
          this.fragmentTracker.removeFragment(fragCurrent);
        }
        this.resetTransmuxer();
        this.resetLoadingState();
      } else if (this.audioOnly) {
        this.resetTransmuxer();
      }
      if (fromAltAudio) {
        this.fragmentTracker.removeAllFragments();
        hls.once(Events.BUFFER_FLUSHED, () => {
          var _this$hls;
          (_this$hls = this.hls) == null ? void 0 : _this$hls.trigger(Events.AUDIO_TRACK_SWITCHED, data);
        });
        hls.trigger(Events.BUFFER_FLUSHING, {
          startOffset: 0,
          endOffset: Number.POSITIVE_INFINITY,
          type: null
        });
        return;
      }
      hls.trigger(Events.AUDIO_TRACK_SWITCHED, data);
    } else {
      this.altAudio = 1;
    }
  }
  onAudioTrackSwitched(event, data) {
    const altAudio = useAlternateAudio(data.url, this.hls);
    if (altAudio) {
      const videoBuffer = this.videoBuffer;
      if (videoBuffer && this.mediaBuffer !== videoBuffer) {
        this.log("Switching on alternate audio, use video.buffered to schedule main fragment loading");
        this.mediaBuffer = videoBuffer;
      }
    }
    this.altAudio = altAudio ? 2 : 0;
    this.tick();
  }
  onBufferCreated(event, data) {
    const tracks = data.tracks;
    let mediaTrack;
    let name;
    let alternate = false;
    for (const type in tracks) {
      const track = tracks[type];
      if (track.id === "main") {
        name = type;
        mediaTrack = track;
        if (type === "video") {
          const videoTrack = tracks[type];
          if (videoTrack) {
            this.videoBuffer = videoTrack.buffer;
          }
        }
      } else {
        alternate = true;
      }
    }
    if (alternate && mediaTrack) {
      this.log(`Alternate track found, use ${name}.buffered to schedule main fragment loading`);
      this.mediaBuffer = mediaTrack.buffer;
    } else {
      this.mediaBuffer = this.media;
    }
  }
  onFragBuffered(event, data) {
    const {
      frag,
      part
    } = data;
    const bufferedMainFragment = frag.type === PlaylistLevelType.MAIN;
    if (bufferedMainFragment) {
      if (this.fragContextChanged(frag)) {
        this.warn(`Fragment ${frag.sn}${part ? " p: " + part.index : ""} of level ${frag.level} finished buffering, but was aborted. state: ${this.state}`);
        if (this.state === State.PARSED) {
          this.state = State.IDLE;
        }
        return;
      }
      const stats = part ? part.stats : frag.stats;
      this.fragLastKbps = Math.round(8 * stats.total / (stats.buffering.end - stats.loading.first));
      if (isMediaFragment(frag)) {
        this.fragPrevious = frag;
      }
      this.fragBufferedComplete(frag, part);
    }
    const media = this.media;
    if (!media) {
      return;
    }
    if (!this._hasEnoughToStart && BufferHelper.getBuffered(media).length) {
      this._hasEnoughToStart = true;
      this.seekToStartPos();
    }
    if (bufferedMainFragment) {
      this.tick();
    }
  }
  get hasEnoughToStart() {
    return this._hasEnoughToStart;
  }
  onError(event, data) {
    var _data$context;
    if (data.fatal) {
      this.state = State.ERROR;
      return;
    }
    switch (data.details) {
      case ErrorDetails.FRAG_GAP:
      case ErrorDetails.FRAG_PARSING_ERROR:
      case ErrorDetails.FRAG_DECRYPT_ERROR:
      case ErrorDetails.FRAG_LOAD_ERROR:
      case ErrorDetails.FRAG_LOAD_TIMEOUT:
      case ErrorDetails.KEY_LOAD_ERROR:
      case ErrorDetails.KEY_LOAD_TIMEOUT:
        this.onFragmentOrKeyLoadError(PlaylistLevelType.MAIN, data);
        break;
      case ErrorDetails.LEVEL_LOAD_ERROR:
      case ErrorDetails.LEVEL_LOAD_TIMEOUT:
      case ErrorDetails.LEVEL_PARSING_ERROR:
        if (!data.levelRetry && this.state === State.WAITING_LEVEL && ((_data$context = data.context) == null ? void 0 : _data$context.type) === PlaylistContextType.LEVEL) {
          this.state = State.IDLE;
        }
        break;
      case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
      case ErrorDetails.BUFFER_APPEND_ERROR:
        if (data.parent !== "main") {
          return;
        }
        if (this.reduceLengthAndFlushBuffer(data)) {
          this.resetLoadingState();
        }
        break;
      case ErrorDetails.BUFFER_FULL_ERROR:
        if (data.parent !== "main") {
          return;
        }
        if (this.reduceLengthAndFlushBuffer(data)) {
          this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
        }
        break;
      case ErrorDetails.INTERNAL_EXCEPTION:
        this.recoverWorkerError(data);
        break;
    }
  }
  onFragLoadEmergencyAborted() {
    this.state = State.IDLE;
    if (!this._hasEnoughToStart) {
      this.startFragRequested = false;
      this.nextLoadPosition = this.lastCurrentTime;
    }
    this.tickImmediate();
  }
  onBufferFlushed(event, {
    type
  }) {
    if (type !== ElementaryStreamTypes.AUDIO || !this.altAudio) {
      const mediaBuffer = (type === ElementaryStreamTypes.VIDEO ? this.videoBuffer : this.mediaBuffer) || this.media;
      if (mediaBuffer) {
        this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.MAIN);
        this.tick();
      }
    }
  }
  onLevelsUpdated(event, data) {
    if (this.level > -1 && this.fragCurrent) {
      this.level = this.fragCurrent.level;
      if (this.level === -1) {
        this.resetWhenMissingContext(this.fragCurrent);
      }
    }
    this.levels = data.levels;
  }
  swapAudioCodec() {
    this.audioCodecSwap = !this.audioCodecSwap;
  }
  seekToStartPos() {
    const {
      media
    } = this;
    if (!media) {
      return;
    }
    const currentTime = media.currentTime;
    let startPosition = this.startPosition;
    if (startPosition >= 0 && currentTime < startPosition) {
      if (media.seeking) {
        this.log(`could not seek to ${startPosition}, already seeking at ${currentTime}`);
        return;
      }
      const timelineOffset = this.timelineOffset;
      if (timelineOffset && startPosition) {
        startPosition += timelineOffset;
      }
      const details = this.getLevelDetails();
      const buffered = BufferHelper.getBuffered(media);
      const bufferStart = buffered.length ? buffered.start(0) : 0;
      const delta = bufferStart - startPosition;
      const skipTolerance = Math.max(this.config.maxBufferHole, this.config.maxFragLookUpTolerance);
      if (this.config.startOnSegmentBoundary || delta > 0 && (delta < skipTolerance || this.loadingParts && delta < 2 * ((details == null ? void 0 : details.partTarget) || 0))) {
        this.log(`adjusting start position by ${delta} to match buffer start`);
        startPosition += delta;
        this.startPosition = startPosition;
      }
      if (currentTime < startPosition) {
        this.log(`seek to target start position ${startPosition} from current time ${currentTime} buffer start ${bufferStart}`);
        media.currentTime = startPosition;
      }
    }
  }
  _getAudioCodec(currentLevel) {
    let audioCodec = this.config.defaultAudioCodec || currentLevel.audioCodec;
    if (this.audioCodecSwap && audioCodec) {
      this.log("Swapping audio codec");
      if (audioCodec.indexOf("mp4a.40.5") !== -1) {
        audioCodec = "mp4a.40.2";
      } else {
        audioCodec = "mp4a.40.5";
      }
    }
    return audioCodec;
  }
  _loadBitrateTestFrag(fragment, level) {
    fragment.bitrateTest = true;
    this._doFragLoad(fragment, level).then((data) => {
      const {
        hls
      } = this;
      const frag = data == null ? void 0 : data.frag;
      if (!frag || this.fragContextChanged(frag)) {
        return;
      }
      level.fragmentError = 0;
      this.state = State.IDLE;
      this.startFragRequested = false;
      this.bitrateTest = false;
      const stats = frag.stats;
      stats.parsing.start = stats.parsing.end = stats.buffering.start = stats.buffering.end = self.performance.now();
      hls.trigger(Events.FRAG_LOADED, data);
      frag.bitrateTest = false;
    });
  }
  _handleTransmuxComplete(transmuxResult) {
    var _id3$samples;
    const id = this.playlistType;
    const {
      hls
    } = this;
    const {
      remuxResult,
      chunkMeta
    } = transmuxResult;
    const context = this.getCurrentContext(chunkMeta);
    if (!context) {
      this.resetWhenMissingContext(chunkMeta);
      return;
    }
    const {
      frag,
      part,
      level
    } = context;
    const {
      video,
      text,
      id3,
      initSegment
    } = remuxResult;
    const {
      details
    } = level;
    const audio = this.altAudio ? void 0 : remuxResult.audio;
    if (this.fragContextChanged(frag)) {
      this.fragmentTracker.removeFragment(frag);
      return;
    }
    this.state = State.PARSING;
    if (initSegment) {
      if (initSegment != null && initSegment.tracks) {
        const mapFragment = frag.initSegment || frag;
        this._bufferInitSegment(level, initSegment.tracks, mapFragment, chunkMeta);
        hls.trigger(Events.FRAG_PARSING_INIT_SEGMENT, {
          frag: mapFragment,
          id,
          tracks: initSegment.tracks
        });
      }
      const baseTime = initSegment.initPTS;
      const timescale = initSegment.timescale;
      const initPTS = this.initPTS[frag.cc];
      if (isFiniteNumber(baseTime) && (!initPTS || initPTS.baseTime !== baseTime || initPTS.timescale !== timescale)) {
        this.initPTS[frag.cc] = {
          baseTime,
          timescale
        };
        hls.trigger(Events.INIT_PTS_FOUND, {
          frag,
          id,
          initPTS: baseTime,
          timescale
        });
      }
    }
    if (video && details) {
      if (audio && video.type === "audiovideo") {
        this.logMuxedErr(frag);
      }
      const prevFrag = details.fragments[frag.sn - 1 - details.startSN];
      const isFirstFragment = frag.sn === details.startSN;
      const isFirstInDiscontinuity = !prevFrag || frag.cc > prevFrag.cc;
      if (remuxResult.independent !== false) {
        const {
          startPTS,
          endPTS,
          startDTS,
          endDTS
        } = video;
        if (part) {
          part.elementaryStreams[video.type] = {
            startPTS,
            endPTS,
            startDTS,
            endDTS
          };
        } else {
          if (video.firstKeyFrame && video.independent && chunkMeta.id === 1 && !isFirstInDiscontinuity) {
            this.couldBacktrack = true;
          }
          if (video.dropped && video.independent) {
            const bufferInfo = this.getMainFwdBufferInfo();
            const targetBufferTime = (bufferInfo ? bufferInfo.end : this.getLoadPosition()) + this.config.maxBufferHole;
            const startTime = video.firstKeyFramePTS ? video.firstKeyFramePTS : startPTS;
            if (!isFirstFragment && targetBufferTime < startTime - this.config.maxBufferHole && !isFirstInDiscontinuity) {
              this.backtrack(frag);
              return;
            } else if (isFirstInDiscontinuity) {
              frag.gap = true;
            }
            frag.setElementaryStreamInfo(video.type, frag.start, endPTS, frag.start, endDTS, true);
          } else if (isFirstFragment && startPTS - (details.appliedTimelineOffset || 0) > MAX_START_GAP_JUMP) {
            frag.gap = true;
          }
        }
        frag.setElementaryStreamInfo(video.type, startPTS, endPTS, startDTS, endDTS);
        if (this.backtrackFragment) {
          this.backtrackFragment = frag;
        }
        this.bufferFragmentData(video, frag, part, chunkMeta, isFirstFragment || isFirstInDiscontinuity);
      } else if (isFirstFragment || isFirstInDiscontinuity) {
        frag.gap = true;
      } else {
        this.backtrack(frag);
        return;
      }
    }
    if (audio) {
      const {
        startPTS,
        endPTS,
        startDTS,
        endDTS
      } = audio;
      if (part) {
        part.elementaryStreams[ElementaryStreamTypes.AUDIO] = {
          startPTS,
          endPTS,
          startDTS,
          endDTS
        };
      }
      frag.setElementaryStreamInfo(ElementaryStreamTypes.AUDIO, startPTS, endPTS, startDTS, endDTS);
      this.bufferFragmentData(audio, frag, part, chunkMeta);
    }
    if (details && id3 != null && (_id3$samples = id3.samples) != null && _id3$samples.length) {
      const emittedID3 = {
        id,
        frag,
        details,
        samples: id3.samples
      };
      hls.trigger(Events.FRAG_PARSING_METADATA, emittedID3);
    }
    if (details && text) {
      const emittedText = {
        id,
        frag,
        details,
        samples: text.samples
      };
      hls.trigger(Events.FRAG_PARSING_USERDATA, emittedText);
    }
  }
  logMuxedErr(frag) {
    this.warn(`${isMediaFragment(frag) ? "Media" : "Init"} segment with muxed audiovideo where only video expected: ${frag.url}`);
  }
  _bufferInitSegment(currentLevel, tracks, frag, chunkMeta) {
    if (this.state !== State.PARSING) {
      return;
    }
    this.audioOnly = !!tracks.audio && !tracks.video;
    if (this.altAudio && !this.audioOnly) {
      delete tracks.audio;
      if (tracks.audiovideo) {
        this.logMuxedErr(frag);
      }
    }
    const {
      audio,
      video,
      audiovideo
    } = tracks;
    if (audio) {
      const levelCodec = currentLevel.audioCodec;
      let audioCodec = pickMostCompleteCodecName(audio.codec, levelCodec);
      if (audioCodec === "mp4a") {
        audioCodec = "mp4a.40.5";
      }
      const ua = navigator.userAgent.toLowerCase();
      if (this.audioCodecSwitch) {
        if (audioCodec) {
          if (audioCodec.indexOf("mp4a.40.5") !== -1) {
            audioCodec = "mp4a.40.2";
          } else {
            audioCodec = "mp4a.40.5";
          }
        }
        const audioMetadata = audio.metadata;
        if (audioMetadata && "channelCount" in audioMetadata && (audioMetadata.channelCount || 1) !== 1 && ua.indexOf("firefox") === -1) {
          audioCodec = "mp4a.40.5";
        }
      }
      if (audioCodec && audioCodec.indexOf("mp4a.40.5") !== -1 && ua.indexOf("android") !== -1 && audio.container !== "audio/mpeg") {
        audioCodec = "mp4a.40.2";
        this.log(`Android: force audio codec to ${audioCodec}`);
      }
      if (levelCodec && levelCodec !== audioCodec) {
        this.log(`Swapping manifest audio codec "${levelCodec}" for "${audioCodec}"`);
      }
      audio.levelCodec = audioCodec;
      audio.id = PlaylistLevelType.MAIN;
      this.log(`Init audio buffer, container:${audio.container}, codecs[selected/level/parsed]=[${audioCodec || ""}/${levelCodec || ""}/${audio.codec}]`);
      delete tracks.audiovideo;
    }
    if (video) {
      video.levelCodec = currentLevel.videoCodec;
      video.id = PlaylistLevelType.MAIN;
      const parsedVideoCodec = video.codec;
      if ((parsedVideoCodec == null ? void 0 : parsedVideoCodec.length) === 4) {
        switch (parsedVideoCodec) {
          case "hvc1":
          case "hev1":
            video.codec = "hvc1.1.6.L120.90";
            break;
          case "av01":
            video.codec = "av01.0.04M.08";
            break;
          case "avc1":
            video.codec = "avc1.42e01e";
            break;
        }
      }
      this.log(`Init video buffer, container:${video.container}, codecs[level/parsed]=[${currentLevel.videoCodec || ""}/${parsedVideoCodec}]${video.codec !== parsedVideoCodec ? " parsed-corrected=" + video.codec : ""}${video.supplemental ? " supplemental=" + video.supplemental : ""}`);
      delete tracks.audiovideo;
    }
    if (audiovideo) {
      this.log(`Init audiovideo buffer, container:${audiovideo.container}, codecs[level/parsed]=[${currentLevel.codecs}/${audiovideo.codec}]`);
      delete tracks.video;
      delete tracks.audio;
    }
    const trackTypes = Object.keys(tracks);
    if (trackTypes.length) {
      this.hls.trigger(Events.BUFFER_CODECS, tracks);
      if (!this.hls) {
        return;
      }
      trackTypes.forEach((trackName) => {
        const track = tracks[trackName];
        const initSegment = track.initSegment;
        if (initSegment != null && initSegment.byteLength) {
          this.hls.trigger(Events.BUFFER_APPENDING, {
            type: trackName,
            data: initSegment,
            frag,
            part: null,
            chunkMeta,
            parent: frag.type
          });
        }
      });
    }
    this.tickImmediate();
  }
  getMainFwdBufferInfo() {
    const bufferOutput = this.mediaBuffer && this.altAudio === 2 ? this.mediaBuffer : this.media;
    return this.getFwdBufferInfo(bufferOutput, PlaylistLevelType.MAIN);
  }
  get maxBufferLength() {
    const {
      levels,
      level
    } = this;
    const levelInfo = levels == null ? void 0 : levels[level];
    if (!levelInfo) {
      return this.config.maxBufferLength;
    }
    return this.getMaxBufferLength(levelInfo.maxBitrate);
  }
  backtrack(frag) {
    this.couldBacktrack = true;
    this.backtrackFragment = frag;
    this.resetTransmuxer();
    this.flushBufferGap(frag);
    this.fragmentTracker.removeFragment(frag);
    this.fragPrevious = null;
    this.nextLoadPosition = frag.start;
    this.state = State.IDLE;
  }
  checkFragmentChanged() {
    const video = this.media;
    let fragPlayingCurrent = null;
    if (video && video.readyState > 1 && video.seeking === false) {
      const currentTime = video.currentTime;
      if (BufferHelper.isBuffered(video, currentTime)) {
        fragPlayingCurrent = this.getAppendedFrag(currentTime);
      } else if (BufferHelper.isBuffered(video, currentTime + 0.1)) {
        fragPlayingCurrent = this.getAppendedFrag(currentTime + 0.1);
      }
      if (fragPlayingCurrent) {
        this.backtrackFragment = null;
        const fragPlaying = this.fragPlaying;
        const fragCurrentLevel = fragPlayingCurrent.level;
        if (!fragPlaying || fragPlayingCurrent.sn !== fragPlaying.sn || fragPlaying.level !== fragCurrentLevel) {
          this.fragPlaying = fragPlayingCurrent;
          this.hls.trigger(Events.FRAG_CHANGED, {
            frag: fragPlayingCurrent
          });
          if (!fragPlaying || fragPlaying.level !== fragCurrentLevel) {
            this.hls.trigger(Events.LEVEL_SWITCHED, {
              level: fragCurrentLevel
            });
          }
        }
      }
    }
  }
  get nextLevel() {
    const frag = this.nextBufferedFrag;
    if (frag) {
      return frag.level;
    }
    return -1;
  }
  get currentFrag() {
    var _this$media3;
    if (this.fragPlaying) {
      return this.fragPlaying;
    }
    const currentTime = ((_this$media3 = this.media) == null ? void 0 : _this$media3.currentTime) || this.lastCurrentTime;
    if (isFiniteNumber(currentTime)) {
      return this.getAppendedFrag(currentTime);
    }
    return null;
  }
  get currentProgramDateTime() {
    var _this$media4;
    const currentTime = ((_this$media4 = this.media) == null ? void 0 : _this$media4.currentTime) || this.lastCurrentTime;
    if (isFiniteNumber(currentTime)) {
      const details = this.getLevelDetails();
      const frag = this.currentFrag || (details ? findFragmentByPTS(null, details.fragments, currentTime) : null);
      if (frag) {
        const programDateTime = frag.programDateTime;
        if (programDateTime !== null) {
          const epocMs = programDateTime + (currentTime - frag.start) * 1e3;
          return new Date(epocMs);
        }
      }
    }
    return null;
  }
  get currentLevel() {
    const frag = this.currentFrag;
    if (frag) {
      return frag.level;
    }
    return -1;
  }
  get nextBufferedFrag() {
    const frag = this.currentFrag;
    if (frag) {
      return this.followingBufferedFrag(frag);
    }
    return null;
  }
  get forceStartLoad() {
    return this._forceStartLoad;
  }
};
var KeyLoader = class {
  constructor(config) {
    this.config = void 0;
    this.keyUriToKeyInfo = {};
    this.emeController = null;
    this.config = config;
  }
  abort(type) {
    for (const uri in this.keyUriToKeyInfo) {
      const loader = this.keyUriToKeyInfo[uri].loader;
      if (loader) {
        var _loader$context;
        if (type && type !== ((_loader$context = loader.context) == null ? void 0 : _loader$context.frag.type)) {
          return;
        }
        loader.abort();
      }
    }
  }
  detach() {
    for (const uri in this.keyUriToKeyInfo) {
      const keyInfo = this.keyUriToKeyInfo[uri];
      if (keyInfo.mediaKeySessionContext || keyInfo.decryptdata.isCommonEncryption) {
        delete this.keyUriToKeyInfo[uri];
      }
    }
  }
  destroy() {
    this.detach();
    for (const uri in this.keyUriToKeyInfo) {
      const loader = this.keyUriToKeyInfo[uri].loader;
      if (loader) {
        loader.destroy();
      }
    }
    this.keyUriToKeyInfo = {};
  }
  createKeyLoadError(frag, details = ErrorDetails.KEY_LOAD_ERROR, error, networkDetails, response) {
    return new LoadError({
      type: ErrorTypes.NETWORK_ERROR,
      details,
      fatal: false,
      frag,
      response,
      error,
      networkDetails
    });
  }
  loadClear(loadingFrag, encryptedFragments, startFragRequested) {
    if (this.emeController && this.config.emeEnabled && !this.emeController.getSelectedKeySystemFormats().length) {
      if (encryptedFragments.length) {
        for (let i = 0, l = encryptedFragments.length; i < l; i++) {
          const frag = encryptedFragments[i];
          if (loadingFrag.cc <= frag.cc && (!isMediaFragment(loadingFrag) || !isMediaFragment(frag) || loadingFrag.sn < frag.sn) || !startFragRequested && i == l - 1) {
            return this.emeController.selectKeySystemFormat(frag).then((keySystemFormat) => {
              if (!this.emeController) {
                return;
              }
              frag.setKeyFormat(keySystemFormat);
              const keySystem = keySystemFormatToKeySystemDomain(keySystemFormat);
              if (keySystem) {
                return this.emeController.getKeySystemAccess([keySystem]);
              }
            });
          }
        }
      }
      if (this.config.requireKeySystemAccessOnStart) {
        const keySystemsInConfig = getKeySystemsForConfig(this.config);
        if (keySystemsInConfig.length) {
          return this.emeController.getKeySystemAccess(keySystemsInConfig);
        }
      }
    }
    return null;
  }
  load(frag) {
    if (!frag.decryptdata && frag.encrypted && this.emeController && this.config.emeEnabled) {
      return this.emeController.selectKeySystemFormat(frag).then((keySystemFormat) => {
        return this.loadInternal(frag, keySystemFormat);
      });
    }
    return this.loadInternal(frag);
  }
  loadInternal(frag, keySystemFormat) {
    var _keyInfo, _keyInfo2;
    if (keySystemFormat) {
      frag.setKeyFormat(keySystemFormat);
    }
    const decryptdata = frag.decryptdata;
    if (!decryptdata) {
      const error = new Error(keySystemFormat ? `Expected frag.decryptdata to be defined after setting format ${keySystemFormat}` : "Missing decryption data on fragment in onKeyLoading");
      return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, error));
    }
    const uri = decryptdata.uri;
    if (!uri) {
      return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error(`Invalid key URI: "${uri}"`)));
    }
    let keyInfo = this.keyUriToKeyInfo[uri];
    if ((_keyInfo = keyInfo) != null && _keyInfo.decryptdata.key) {
      decryptdata.key = keyInfo.decryptdata.key;
      return Promise.resolve({
        frag,
        keyInfo
      });
    }
    if ((_keyInfo2 = keyInfo) != null && _keyInfo2.keyLoadPromise) {
      var _keyInfo$mediaKeySess;
      switch ((_keyInfo$mediaKeySess = keyInfo.mediaKeySessionContext) == null ? void 0 : _keyInfo$mediaKeySess.keyStatus) {
        case void 0:
        case "status-pending":
        case "usable":
        case "usable-in-future":
          return keyInfo.keyLoadPromise.then((keyLoadedData) => {
            decryptdata.key = keyLoadedData.keyInfo.decryptdata.key;
            return {
              frag,
              keyInfo
            };
          });
      }
    }
    keyInfo = this.keyUriToKeyInfo[uri] = {
      decryptdata,
      keyLoadPromise: null,
      loader: null,
      mediaKeySessionContext: null
    };
    switch (decryptdata.method) {
      case "ISO-23001-7":
      case "SAMPLE-AES":
      case "SAMPLE-AES-CENC":
      case "SAMPLE-AES-CTR":
        if (decryptdata.keyFormat === "identity") {
          return this.loadKeyHTTP(keyInfo, frag);
        }
        return this.loadKeyEME(keyInfo, frag);
      case "AES-128":
      case "AES-256":
      case "AES-256-CTR":
        return this.loadKeyHTTP(keyInfo, frag);
      default:
        return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error(`Key supplied with unsupported METHOD: "${decryptdata.method}"`)));
    }
  }
  loadKeyEME(keyInfo, frag) {
    const keyLoadedData = {
      frag,
      keyInfo
    };
    if (this.emeController && this.config.emeEnabled) {
      const keySessionContextPromise = this.emeController.loadKey(keyLoadedData);
      if (keySessionContextPromise) {
        return (keyInfo.keyLoadPromise = keySessionContextPromise.then((keySessionContext) => {
          keyInfo.mediaKeySessionContext = keySessionContext;
          return keyLoadedData;
        })).catch((error) => {
          keyInfo.keyLoadPromise = null;
          throw error;
        });
      }
    }
    return Promise.resolve(keyLoadedData);
  }
  loadKeyHTTP(keyInfo, frag) {
    const config = this.config;
    const Loader = config.loader;
    const keyLoader = new Loader(config);
    frag.keyLoader = keyInfo.loader = keyLoader;
    return keyInfo.keyLoadPromise = new Promise((resolve, reject) => {
      const loaderContext = {
        keyInfo,
        frag,
        responseType: "arraybuffer",
        url: keyInfo.decryptdata.uri
      };
      const loadPolicy = config.keyLoadPolicy.default;
      const loaderConfig = {
        loadPolicy,
        timeout: loadPolicy.maxLoadTimeMs,
        maxRetry: 0,
        retryDelay: 0,
        maxRetryDelay: 0
      };
      const loaderCallbacks = {
        onSuccess: (response, stats, context, networkDetails) => {
          const {
            frag: frag2,
            keyInfo: keyInfo2,
            url: uri
          } = context;
          if (!frag2.decryptdata || keyInfo2 !== this.keyUriToKeyInfo[uri]) {
            return reject(this.createKeyLoadError(frag2, ErrorDetails.KEY_LOAD_ERROR, new Error("after key load, decryptdata unset or changed"), networkDetails));
          }
          keyInfo2.decryptdata.key = frag2.decryptdata.key = new Uint8Array(response.data);
          frag2.keyLoader = null;
          keyInfo2.loader = null;
          resolve({
            frag: frag2,
            keyInfo: keyInfo2
          });
        },
        onError: (response, context, networkDetails, stats) => {
          this.resetLoader(context);
          reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error(`HTTP Error ${response.code} loading key ${response.text}`), networkDetails, _objectSpread2({
            url: loaderContext.url,
            data: void 0
          }, response)));
        },
        onTimeout: (stats, context, networkDetails) => {
          this.resetLoader(context);
          reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_TIMEOUT, new Error("key loading timed out"), networkDetails));
        },
        onAbort: (stats, context, networkDetails) => {
          this.resetLoader(context);
          reject(this.createKeyLoadError(frag, ErrorDetails.INTERNAL_ABORTED, new Error("key loading aborted"), networkDetails));
        }
      };
      keyLoader.load(loaderContext, loaderConfig, loaderCallbacks);
    });
  }
  resetLoader(context) {
    const {
      frag,
      keyInfo,
      url: uri
    } = context;
    const loader = keyInfo.loader;
    if (frag.keyLoader === loader) {
      frag.keyLoader = null;
      keyInfo.loader = null;
    }
    delete this.keyUriToKeyInfo[uri];
    if (loader) {
      loader.destroy();
    }
  }
};
function mapContextToLevelType(context) {
  const {
    type
  } = context;
  switch (type) {
    case PlaylistContextType.AUDIO_TRACK:
      return PlaylistLevelType.AUDIO;
    case PlaylistContextType.SUBTITLE_TRACK:
      return PlaylistLevelType.SUBTITLE;
    default:
      return PlaylistLevelType.MAIN;
  }
}
function getResponseUrl(response, context) {
  let url = response.url;
  if (url === void 0 || url.indexOf("data:") === 0) {
    url = context.url;
  }
  return url;
}
var PlaylistLoader = class {
  constructor(hls) {
    this.hls = void 0;
    this.loaders = /* @__PURE__ */ Object.create(null);
    this.variableList = null;
    this.onManifestLoaded = this.checkAutostartLoad;
    this.hls = hls;
    this.registerListeners();
  }
  startLoad(startPosition) {
  }
  stopLoad() {
    this.destroyInternalLoaders();
  }
  registerListeners() {
    const {
      hls
    } = this;
    hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.on(Events.AUDIO_TRACK_LOADING, this.onAudioTrackLoading, this);
    hls.on(Events.SUBTITLE_TRACK_LOADING, this.onSubtitleTrackLoading, this);
    hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
  }
  unregisterListeners() {
    const {
      hls
    } = this;
    hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
    hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
    hls.off(Events.AUDIO_TRACK_LOADING, this.onAudioTrackLoading, this);
    hls.off(Events.SUBTITLE_TRACK_LOADING, this.onSubtitleTrackLoading, this);
    hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
  }
  createInternalLoader(context) {
    const config = this.hls.config;
    const PLoader = config.pLoader;
    const Loader = config.loader;
    const InternalLoader = PLoader || Loader;
    const loader = new InternalLoader(config);
    this.loaders[context.type] = loader;
    return loader;
  }
  getInternalLoader(context) {
    return this.loaders[context.type];
  }
  resetInternalLoader(contextType) {
    if (this.loaders[contextType]) {
      delete this.loaders[contextType];
    }
  }
  destroyInternalLoaders() {
    for (const contextType in this.loaders) {
      const loader = this.loaders[contextType];
      if (loader) {
        loader.destroy();
      }
      this.resetInternalLoader(contextType);
    }
  }
  destroy() {
    this.variableList = null;
    this.unregisterListeners();
    this.destroyInternalLoaders();
  }
  onManifestLoading(event, data) {
    const {
      url
    } = data;
    this.variableList = null;
    this.load({
      id: null,
      level: 0,
      responseType: "text",
      type: PlaylistContextType.MANIFEST,
      url,
      deliveryDirectives: null,
      levelOrTrack: null
    });
  }
  onLevelLoading(event, data) {
    const {
      id,
      level,
      pathwayId,
      url,
      deliveryDirectives,
      levelInfo
    } = data;
    this.load({
      id,
      level,
      pathwayId,
      responseType: "text",
      type: PlaylistContextType.LEVEL,
      url,
      deliveryDirectives,
      levelOrTrack: levelInfo
    });
  }
  onAudioTrackLoading(event, data) {
    const {
      id,
      groupId,
      url,
      deliveryDirectives,
      track
    } = data;
    this.load({
      id,
      groupId,
      level: null,
      responseType: "text",
      type: PlaylistContextType.AUDIO_TRACK,
      url,
      deliveryDirectives,
      levelOrTrack: track
    });
  }
  onSubtitleTrackLoading(event, data) {
    const {
      id,
      groupId,
      url,
      deliveryDirectives,
      track
    } = data;
    this.load({
      id,
      groupId,
      level: null,
      responseType: "text",
      type: PlaylistContextType.SUBTITLE_TRACK,
      url,
      deliveryDirectives,
      levelOrTrack: track
    });
  }
  onLevelsUpdated(event, data) {
    const loader = this.loaders[PlaylistContextType.LEVEL];
    if (loader) {
      const context = loader.context;
      if (context && !data.levels.some((lvl) => lvl === context.levelOrTrack)) {
        loader.abort();
        delete this.loaders[PlaylistContextType.LEVEL];
      }
    }
  }
  load(context) {
    var _context$deliveryDire;
    const config = this.hls.config;
    let loader = this.getInternalLoader(context);
    if (loader) {
      const logger2 = this.hls.logger;
      const loaderContext = loader.context;
      if (loaderContext && loaderContext.levelOrTrack === context.levelOrTrack && (loaderContext.url === context.url || loaderContext.deliveryDirectives && !context.deliveryDirectives)) {
        if (loaderContext.url === context.url) {
          logger2.log(`[playlist-loader]: ignore ${context.url} ongoing request`);
        } else {
          logger2.log(`[playlist-loader]: ignore ${context.url} in favor of ${loaderContext.url}`);
        }
        return;
      }
      logger2.log(`[playlist-loader]: aborting previous loader for type: ${context.type}`);
      loader.abort();
    }
    let loadPolicy;
    if (context.type === PlaylistContextType.MANIFEST) {
      loadPolicy = config.manifestLoadPolicy.default;
    } else {
      loadPolicy = _extends({}, config.playlistLoadPolicy.default, {
        timeoutRetry: null,
        errorRetry: null
      });
    }
    loader = this.createInternalLoader(context);
    if (isFiniteNumber((_context$deliveryDire = context.deliveryDirectives) == null ? void 0 : _context$deliveryDire.part)) {
      let levelDetails;
      if (context.type === PlaylistContextType.LEVEL && context.level !== null) {
        levelDetails = this.hls.levels[context.level].details;
      } else if (context.type === PlaylistContextType.AUDIO_TRACK && context.id !== null) {
        levelDetails = this.hls.audioTracks[context.id].details;
      } else if (context.type === PlaylistContextType.SUBTITLE_TRACK && context.id !== null) {
        levelDetails = this.hls.subtitleTracks[context.id].details;
      }
      if (levelDetails) {
        const partTarget = levelDetails.partTarget;
        const targetDuration = levelDetails.targetduration;
        if (partTarget && targetDuration) {
          const maxLowLatencyPlaylistRefresh = Math.max(partTarget * 3, targetDuration * 0.8) * 1e3;
          loadPolicy = _extends({}, loadPolicy, {
            maxTimeToFirstByteMs: Math.min(maxLowLatencyPlaylistRefresh, loadPolicy.maxTimeToFirstByteMs),
            maxLoadTimeMs: Math.min(maxLowLatencyPlaylistRefresh, loadPolicy.maxTimeToFirstByteMs)
          });
        }
      }
    }
    const legacyRetryCompatibility = loadPolicy.errorRetry || loadPolicy.timeoutRetry || {};
    const loaderConfig = {
      loadPolicy,
      timeout: loadPolicy.maxLoadTimeMs,
      maxRetry: legacyRetryCompatibility.maxNumRetry || 0,
      retryDelay: legacyRetryCompatibility.retryDelayMs || 0,
      maxRetryDelay: legacyRetryCompatibility.maxRetryDelayMs || 0
    };
    const loaderCallbacks = {
      onSuccess: (response, stats, context2, networkDetails) => {
        const loader2 = this.getInternalLoader(context2);
        this.resetInternalLoader(context2.type);
        const string = response.data;
        if (string.indexOf("#EXTM3U") !== 0) {
          this.handleManifestParsingError(response, context2, new Error("no EXTM3U delimiter"), networkDetails || null, stats);
          return;
        }
        stats.parsing.start = performance.now();
        if (M3U8Parser.isMediaPlaylist(string) || context2.type !== PlaylistContextType.MANIFEST) {
          this.handleTrackOrLevelPlaylist(response, stats, context2, networkDetails || null, loader2);
        } else {
          this.handleMasterPlaylist(response, stats, context2, networkDetails);
        }
      },
      onError: (response, context2, networkDetails, stats) => {
        this.handleNetworkError(context2, networkDetails, false, response, stats);
      },
      onTimeout: (stats, context2, networkDetails) => {
        this.handleNetworkError(context2, networkDetails, true, void 0, stats);
      }
    };
    loader.load(context, loaderConfig, loaderCallbacks);
  }
  checkAutostartLoad() {
    if (!this.hls) {
      return;
    }
    const {
      config: {
        autoStartLoad,
        startPosition
      },
      forceStartLoad
    } = this.hls;
    if (autoStartLoad || forceStartLoad) {
      this.hls.logger.log(`${autoStartLoad ? "auto" : "force"} startLoad with configured startPosition ${startPosition}`);
      this.hls.startLoad(startPosition);
    }
  }
  handleMasterPlaylist(response, stats, context, networkDetails) {
    const hls = this.hls;
    const string = response.data;
    const url = getResponseUrl(response, context);
    const parsedResult = M3U8Parser.parseMasterPlaylist(string, url);
    if (parsedResult.playlistParsingError) {
      this.handleManifestParsingError(response, context, parsedResult.playlistParsingError, networkDetails, stats);
      return;
    }
    const {
      contentSteering,
      levels,
      sessionData,
      sessionKeys,
      startTimeOffset,
      variableList
    } = parsedResult;
    this.variableList = variableList;
    const {
      AUDIO: audioTracks = [],
      SUBTITLES: subtitles,
      "CLOSED-CAPTIONS": captions
    } = M3U8Parser.parseMasterPlaylistMedia(string, url, parsedResult);
    if (audioTracks.length) {
      const embeddedAudioFound = audioTracks.some((audioTrack) => !audioTrack.url);
      if (!embeddedAudioFound && levels[0].audioCodec && !levels[0].attrs.AUDIO) {
        this.hls.logger.log("[playlist-loader]: audio codec signaled in quality level, but no embedded audio track signaled, create one");
        audioTracks.unshift({
          type: "main",
          name: "main",
          groupId: "main",
          default: false,
          autoselect: false,
          forced: false,
          id: -1,
          attrs: new AttrList({}),
          bitrate: 0,
          url: ""
        });
      }
    }
    hls.trigger(Events.MANIFEST_LOADED, {
      levels,
      audioTracks,
      subtitles,
      captions,
      contentSteering,
      url,
      stats,
      networkDetails,
      sessionData,
      sessionKeys,
      startTimeOffset,
      variableList
    });
  }
  handleTrackOrLevelPlaylist(response, stats, context, networkDetails, loader) {
    const hls = this.hls;
    const {
      id,
      level,
      type
    } = context;
    const url = getResponseUrl(response, context);
    const levelId = isFiniteNumber(level) ? level : isFiniteNumber(id) ? id : 0;
    const levelType = mapContextToLevelType(context);
    const levelDetails = M3U8Parser.parseLevelPlaylist(response.data, url, levelId, levelType, 0, this.variableList);
    if (type === PlaylistContextType.MANIFEST) {
      const singleLevel = {
        attrs: new AttrList({}),
        bitrate: 0,
        details: levelDetails,
        name: "",
        url
      };
      levelDetails.requestScheduled = stats.loading.start + computeReloadInterval(levelDetails, 0);
      hls.trigger(Events.MANIFEST_LOADED, {
        levels: [singleLevel],
        audioTracks: [],
        url,
        stats,
        networkDetails,
        sessionData: null,
        sessionKeys: null,
        contentSteering: null,
        startTimeOffset: null,
        variableList: null
      });
    }
    stats.parsing.end = performance.now();
    context.levelDetails = levelDetails;
    this.handlePlaylistLoaded(levelDetails, response, stats, context, networkDetails, loader);
  }
  handleManifestParsingError(response, context, error, networkDetails, stats) {
    this.hls.trigger(Events.ERROR, {
      type: ErrorTypes.NETWORK_ERROR,
      details: ErrorDetails.MANIFEST_PARSING_ERROR,
      fatal: context.type === PlaylistContextType.MANIFEST,
      url: response.url,
      err: error,
      error,
      reason: error.message,
      response,
      context,
      networkDetails,
      stats
    });
  }
  handleNetworkError(context, networkDetails, timeout = false, response, stats) {
    let message = `A network ${timeout ? "timeout" : "error" + (response ? " (status " + response.code + ")" : "")} occurred while loading ${context.type}`;
    if (context.type === PlaylistContextType.LEVEL) {
      message += `: ${context.level} id: ${context.id}`;
    } else if (context.type === PlaylistContextType.AUDIO_TRACK || context.type === PlaylistContextType.SUBTITLE_TRACK) {
      message += ` id: ${context.id} group-id: "${context.groupId}"`;
    }
    const error = new Error(message);
    this.hls.logger.warn(`[playlist-loader]: ${message}`);
    let details = ErrorDetails.UNKNOWN;
    let fatal = false;
    const loader = this.getInternalLoader(context);
    switch (context.type) {
      case PlaylistContextType.MANIFEST:
        details = timeout ? ErrorDetails.MANIFEST_LOAD_TIMEOUT : ErrorDetails.MANIFEST_LOAD_ERROR;
        fatal = true;
        break;
      case PlaylistContextType.LEVEL:
        details = timeout ? ErrorDetails.LEVEL_LOAD_TIMEOUT : ErrorDetails.LEVEL_LOAD_ERROR;
        fatal = false;
        break;
      case PlaylistContextType.AUDIO_TRACK:
        details = timeout ? ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT : ErrorDetails.AUDIO_TRACK_LOAD_ERROR;
        fatal = false;
        break;
      case PlaylistContextType.SUBTITLE_TRACK:
        details = timeout ? ErrorDetails.SUBTITLE_TRACK_LOAD_TIMEOUT : ErrorDetails.SUBTITLE_LOAD_ERROR;
        fatal = false;
        break;
    }
    if (loader) {
      this.resetInternalLoader(context.type);
    }
    const errorData = {
      type: ErrorTypes.NETWORK_ERROR,
      details,
      fatal,
      url: context.url,
      loader,
      context,
      error,
      networkDetails,
      stats
    };
    if (response) {
      const url = (networkDetails == null ? void 0 : networkDetails.url) || context.url;
      errorData.response = _objectSpread2({
        url,
        data: void 0
      }, response);
    }
    this.hls.trigger(Events.ERROR, errorData);
  }
  handlePlaylistLoaded(levelDetails, response, stats, context, networkDetails, loader) {
    const hls = this.hls;
    const {
      type,
      level,
      id,
      groupId,
      deliveryDirectives
    } = context;
    const url = getResponseUrl(response, context);
    const parent = mapContextToLevelType(context);
    const levelIndex = typeof context.level === "number" && parent === PlaylistLevelType.MAIN ? level : void 0;
    if (!levelDetails.fragments.length) {
      const _error = levelDetails.playlistParsingError = new Error("No Segments found in Playlist");
      hls.trigger(Events.ERROR, {
        type: ErrorTypes.NETWORK_ERROR,
        details: ErrorDetails.LEVEL_EMPTY_ERROR,
        fatal: false,
        url,
        error: _error,
        reason: _error.message,
        response,
        context,
        level: levelIndex,
        parent,
        networkDetails,
        stats
      });
      return;
    }
    if (!levelDetails.targetduration) {
      levelDetails.playlistParsingError = new Error("Missing Target Duration");
    }
    const error = levelDetails.playlistParsingError;
    if (error) {
      this.hls.logger.warn(error);
      if (!hls.config.ignorePlaylistParsingErrors) {
        hls.trigger(Events.ERROR, {
          type: ErrorTypes.NETWORK_ERROR,
          details: ErrorDetails.LEVEL_PARSING_ERROR,
          fatal: false,
          url,
          error,
          reason: error.message,
          response,
          context,
          level: levelIndex,
          parent,
          networkDetails,
          stats
        });
        return;
      }
      levelDetails.playlistParsingError = null;
    }
    if (levelDetails.live && loader) {
      if (loader.getCacheAge) {
        levelDetails.ageHeader = loader.getCacheAge() || 0;
      }
      if (!loader.getCacheAge || isNaN(levelDetails.ageHeader)) {
        levelDetails.ageHeader = 0;
      }
    }
    switch (type) {
      case PlaylistContextType.MANIFEST:
      case PlaylistContextType.LEVEL:
        hls.trigger(Events.LEVEL_LOADED, {
          details: levelDetails,
          levelInfo: context.levelOrTrack || hls.levels[0],
          level: levelIndex || 0,
          id: id || 0,
          stats,
          networkDetails,
          deliveryDirectives,
          withoutMultiVariant: type === PlaylistContextType.MANIFEST
        });
        break;
      case PlaylistContextType.AUDIO_TRACK:
        hls.trigger(Events.AUDIO_TRACK_LOADED, {
          details: levelDetails,
          track: context.levelOrTrack,
          id: id || 0,
          groupId: groupId || "",
          stats,
          networkDetails,
          deliveryDirectives
        });
        break;
      case PlaylistContextType.SUBTITLE_TRACK:
        hls.trigger(Events.SUBTITLE_TRACK_LOADED, {
          details: levelDetails,
          track: context.levelOrTrack,
          id: id || 0,
          groupId: groupId || "",
          stats,
          networkDetails,
          deliveryDirectives
        });
        break;
    }
  }
};
var Hls = class {
  static get version() {
    return version;
  }
  static isMSESupported() {
    return isMSESupported();
  }
  static isSupported() {
    return isSupported();
  }
  static getMediaSource() {
    return getMediaSource();
  }
  static get Events() {
    return Events;
  }
  static get MetadataSchema() {
    return MetadataSchema;
  }
  static get ErrorTypes() {
    return ErrorTypes;
  }
  static get ErrorDetails() {
    return ErrorDetails;
  }
  static get DefaultConfig() {
    if (!Hls.defaultConfig) {
      return hlsDefaultConfig;
    }
    return Hls.defaultConfig;
  }
  static set DefaultConfig(defaultConfig) {
    Hls.defaultConfig = defaultConfig;
  }
  constructor(userConfig = {}) {
    this.config = void 0;
    this.userConfig = void 0;
    this.logger = void 0;
    this.coreComponents = void 0;
    this.networkControllers = void 0;
    this._emitter = new EventEmitter();
    this._autoLevelCapping = -1;
    this._maxHdcpLevel = null;
    this.abrController = void 0;
    this.bufferController = void 0;
    this.capLevelController = void 0;
    this.latencyController = void 0;
    this.levelController = void 0;
    this.streamController = void 0;
    this.audioStreamController = void 0;
    this.subtititleStreamController = void 0;
    this.audioTrackController = void 0;
    this.subtitleTrackController = void 0;
    this.interstitialsController = void 0;
    this.gapController = void 0;
    this.emeController = void 0;
    this.cmcdController = void 0;
    this._media = null;
    this._url = null;
    this._sessionId = void 0;
    this.triggeringException = void 0;
    this.started = false;
    const logger2 = this.logger = enableLogs(userConfig.debug || false, "Hls instance", userConfig.assetPlayerId);
    const config = this.config = mergeConfig(Hls.DefaultConfig, userConfig, logger2);
    this.userConfig = userConfig;
    if (config.progressive) {
      enableStreamingMode(config, logger2);
    }
    const {
      abrController: _AbrController,
      bufferController: _BufferController,
      capLevelController: _CapLevelController,
      errorController: _ErrorController,
      fpsController: _FpsController
    } = config;
    const errorController = new _ErrorController(this);
    const abrController = this.abrController = new _AbrController(this);
    const fragmentTracker = new FragmentTracker(this);
    const _InterstitialsController = config.interstitialsController;
    const interstitialsController = _InterstitialsController ? this.interstitialsController = new _InterstitialsController(this, Hls) : null;
    const bufferController = this.bufferController = new _BufferController(this, fragmentTracker);
    const capLevelController = this.capLevelController = new _CapLevelController(this);
    const fpsController = new _FpsController(this);
    const playListLoader = new PlaylistLoader(this);
    const _ContentSteeringController = config.contentSteeringController;
    const contentSteering = _ContentSteeringController ? new _ContentSteeringController(this) : null;
    const levelController = this.levelController = new LevelController(this, contentSteering);
    const id3TrackController = new ID3TrackController(this);
    const keyLoader = new KeyLoader(this.config);
    const streamController = this.streamController = new StreamController(this, fragmentTracker, keyLoader);
    const gapController = this.gapController = new GapController(this, fragmentTracker);
    capLevelController.setStreamController(streamController);
    fpsController.setStreamController(streamController);
    const networkControllers = [playListLoader, levelController, streamController];
    if (interstitialsController) {
      networkControllers.splice(1, 0, interstitialsController);
    }
    if (contentSteering) {
      networkControllers.splice(1, 0, contentSteering);
    }
    this.networkControllers = networkControllers;
    const coreComponents = [abrController, bufferController, gapController, capLevelController, fpsController, id3TrackController, fragmentTracker];
    this.audioTrackController = this.createController(config.audioTrackController, networkControllers);
    const AudioStreamControllerClass = config.audioStreamController;
    if (AudioStreamControllerClass) {
      networkControllers.push(this.audioStreamController = new AudioStreamControllerClass(this, fragmentTracker, keyLoader));
    }
    this.subtitleTrackController = this.createController(config.subtitleTrackController, networkControllers);
    const SubtitleStreamControllerClass = config.subtitleStreamController;
    if (SubtitleStreamControllerClass) {
      networkControllers.push(this.subtititleStreamController = new SubtitleStreamControllerClass(this, fragmentTracker, keyLoader));
    }
    this.createController(config.timelineController, coreComponents);
    keyLoader.emeController = this.emeController = this.createController(config.emeController, coreComponents);
    this.cmcdController = this.createController(config.cmcdController, coreComponents);
    this.latencyController = this.createController(LatencyController, coreComponents);
    this.coreComponents = coreComponents;
    networkControllers.push(errorController);
    const onErrorOut = errorController.onErrorOut;
    if (typeof onErrorOut === "function") {
      this.on(Events.ERROR, onErrorOut, errorController);
    }
    this.on(Events.MANIFEST_LOADED, playListLoader.onManifestLoaded, playListLoader);
  }
  createController(ControllerClass, components) {
    if (ControllerClass) {
      const controllerInstance = new ControllerClass(this);
      if (components) {
        components.push(controllerInstance);
      }
      return controllerInstance;
    }
    return null;
  }
  on(event, listener, context = this) {
    this._emitter.on(event, listener, context);
  }
  once(event, listener, context = this) {
    this._emitter.once(event, listener, context);
  }
  removeAllListeners(event) {
    this._emitter.removeAllListeners(event);
  }
  off(event, listener, context = this, once) {
    this._emitter.off(event, listener, context, once);
  }
  listeners(event) {
    return this._emitter.listeners(event);
  }
  emit(event, name, eventObject) {
    return this._emitter.emit(event, name, eventObject);
  }
  trigger(event, eventObject) {
    if (this.config.debug) {
      return this.emit(event, event, eventObject);
    } else {
      try {
        return this.emit(event, event, eventObject);
      } catch (error) {
        this.logger.error("An internal error happened while handling event " + event + '. Error message: "' + error.message + '". Here is a stacktrace:', error);
        if (!this.triggeringException) {
          this.triggeringException = true;
          const fatal = event === Events.ERROR;
          this.trigger(Events.ERROR, {
            type: ErrorTypes.OTHER_ERROR,
            details: ErrorDetails.INTERNAL_EXCEPTION,
            fatal,
            event,
            error
          });
          this.triggeringException = false;
        }
      }
    }
    return false;
  }
  listenerCount(event) {
    return this._emitter.listenerCount(event);
  }
  destroy() {
    this.logger.log("destroy");
    this.trigger(Events.DESTROYING, void 0);
    this.detachMedia();
    this.removeAllListeners();
    this._autoLevelCapping = -1;
    this._url = null;
    this.networkControllers.forEach((component) => component.destroy());
    this.networkControllers.length = 0;
    this.coreComponents.forEach((component) => component.destroy());
    this.coreComponents.length = 0;
    const config = this.config;
    config.xhrSetup = config.fetchSetup = void 0;
    this.userConfig = null;
  }
  attachMedia(data) {
    if (!data || "media" in data && !data.media) {
      const error = new Error(`attachMedia failed: invalid argument (${data})`);
      this.trigger(Events.ERROR, {
        type: ErrorTypes.OTHER_ERROR,
        details: ErrorDetails.ATTACH_MEDIA_ERROR,
        fatal: true,
        error
      });
      return;
    }
    this.logger.log(`attachMedia`);
    if (this._media) {
      this.logger.warn(`media must be detached before attaching`);
      this.detachMedia();
    }
    const attachMediaSource = "media" in data;
    const media = attachMediaSource ? data.media : data;
    const attachingData = attachMediaSource ? data : {
      media
    };
    this._media = media;
    this.trigger(Events.MEDIA_ATTACHING, attachingData);
  }
  detachMedia() {
    this.logger.log("detachMedia");
    this.trigger(Events.MEDIA_DETACHING, {});
    this._media = null;
  }
  transferMedia() {
    this._media = null;
    const transferMedia = this.bufferController.transferMedia();
    this.trigger(Events.MEDIA_DETACHING, {
      transferMedia
    });
    return transferMedia;
  }
  loadSource(url) {
    this.stopLoad();
    const media = this.media;
    const loadedSource = this._url;
    const loadingSource = this._url = urlToolkitExports.buildAbsoluteURL(self.location.href, url, {
      alwaysNormalize: true
    });
    this._autoLevelCapping = -1;
    this._maxHdcpLevel = null;
    this.logger.log(`loadSource:${loadingSource}`);
    if (media && loadedSource && (loadedSource !== loadingSource || this.bufferController.hasSourceTypes())) {
      this.detachMedia();
      this.attachMedia(media);
    }
    this.trigger(Events.MANIFEST_LOADING, {
      url
    });
  }
  get url() {
    return this._url;
  }
  get hasEnoughToStart() {
    return this.streamController.hasEnoughToStart;
  }
  get startPosition() {
    return this.streamController.startPositionValue;
  }
  startLoad(startPosition = -1, skipSeekToStartPosition) {
    this.logger.log(`startLoad(${startPosition + (skipSeekToStartPosition ? ", <skip seek to start>" : "")})`);
    this.started = true;
    this.resumeBuffering();
    for (let i = 0; i < this.networkControllers.length; i++) {
      this.networkControllers[i].startLoad(startPosition, skipSeekToStartPosition);
      if (!this.started || !this.networkControllers) {
        break;
      }
    }
  }
  stopLoad() {
    this.logger.log("stopLoad");
    this.started = false;
    for (let i = 0; i < this.networkControllers.length; i++) {
      this.networkControllers[i].stopLoad();
      if (this.started || !this.networkControllers) {
        break;
      }
    }
  }
  get loadingEnabled() {
    return this.started;
  }
  get bufferingEnabled() {
    return this.streamController.bufferingEnabled;
  }
  resumeBuffering() {
    if (!this.bufferingEnabled) {
      this.logger.log(`resume buffering`);
      this.networkControllers.forEach((controller) => {
        if (controller.resumeBuffering) {
          controller.resumeBuffering();
        }
      });
    }
  }
  pauseBuffering() {
    if (this.bufferingEnabled) {
      this.logger.log(`pause buffering`);
      this.networkControllers.forEach((controller) => {
        if (controller.pauseBuffering) {
          controller.pauseBuffering();
        }
      });
    }
  }
  get inFlightFragments() {
    const inFlightData = {
      [PlaylistLevelType.MAIN]: this.streamController.inFlightFrag
    };
    if (this.audioStreamController) {
      inFlightData[PlaylistLevelType.AUDIO] = this.audioStreamController.inFlightFrag;
    }
    if (this.subtititleStreamController) {
      inFlightData[PlaylistLevelType.SUBTITLE] = this.subtititleStreamController.inFlightFrag;
    }
    return inFlightData;
  }
  swapAudioCodec() {
    this.logger.log("swapAudioCodec");
    this.streamController.swapAudioCodec();
  }
  recoverMediaError() {
    this.logger.log("recoverMediaError");
    const media = this._media;
    const time = media == null ? void 0 : media.currentTime;
    this.detachMedia();
    if (media) {
      this.attachMedia(media);
      if (time) {
        this.startLoad(time);
      }
    }
  }
  removeLevel(levelIndex) {
    this.levelController.removeLevel(levelIndex);
  }
  get sessionId() {
    let _sessionId = this._sessionId;
    if (!_sessionId) {
      _sessionId = this._sessionId = uuid();
    }
    return _sessionId;
  }
  get levels() {
    const levels = this.levelController.levels;
    return levels ? levels : [];
  }
  get latestLevelDetails() {
    return this.streamController.getLevelDetails() || null;
  }
  get loadLevelObj() {
    return this.levelController.loadLevelObj;
  }
  get currentLevel() {
    return this.streamController.currentLevel;
  }
  set currentLevel(newLevel) {
    this.logger.log(`set currentLevel:${newLevel}`);
    this.levelController.manualLevel = newLevel;
    this.streamController.immediateLevelSwitch();
  }
  get nextLevel() {
    return this.streamController.nextLevel;
  }
  set nextLevel(newLevel) {
    this.logger.log(`set nextLevel:${newLevel}`);
    this.levelController.manualLevel = newLevel;
    this.streamController.nextLevelSwitch();
  }
  get loadLevel() {
    return this.levelController.level;
  }
  set loadLevel(newLevel) {
    this.logger.log(`set loadLevel:${newLevel}`);
    this.levelController.manualLevel = newLevel;
  }
  get nextLoadLevel() {
    return this.levelController.nextLoadLevel;
  }
  set nextLoadLevel(level) {
    this.levelController.nextLoadLevel = level;
  }
  get firstLevel() {
    return Math.max(this.levelController.firstLevel, this.minAutoLevel);
  }
  set firstLevel(newLevel) {
    this.logger.log(`set firstLevel:${newLevel}`);
    this.levelController.firstLevel = newLevel;
  }
  get startLevel() {
    const startLevel = this.levelController.startLevel;
    if (startLevel === -1 && this.abrController.forcedAutoLevel > -1) {
      return this.abrController.forcedAutoLevel;
    }
    return startLevel;
  }
  set startLevel(newLevel) {
    this.logger.log(`set startLevel:${newLevel}`);
    if (newLevel !== -1) {
      newLevel = Math.max(newLevel, this.minAutoLevel);
    }
    this.levelController.startLevel = newLevel;
  }
  get capLevelToPlayerSize() {
    return this.config.capLevelToPlayerSize;
  }
  set capLevelToPlayerSize(shouldStartCapping) {
    const newCapLevelToPlayerSize = !!shouldStartCapping;
    if (newCapLevelToPlayerSize !== this.config.capLevelToPlayerSize) {
      if (newCapLevelToPlayerSize) {
        this.capLevelController.startCapping();
      } else {
        this.capLevelController.stopCapping();
        this.autoLevelCapping = -1;
        this.streamController.nextLevelSwitch();
      }
      this.config.capLevelToPlayerSize = newCapLevelToPlayerSize;
    }
  }
  get autoLevelCapping() {
    return this._autoLevelCapping;
  }
  get bandwidthEstimate() {
    const {
      bwEstimator
    } = this.abrController;
    if (!bwEstimator) {
      return NaN;
    }
    return bwEstimator.getEstimate();
  }
  set bandwidthEstimate(abrEwmaDefaultEstimate) {
    this.abrController.resetEstimator(abrEwmaDefaultEstimate);
  }
  get abrEwmaDefaultEstimate() {
    const {
      bwEstimator
    } = this.abrController;
    if (!bwEstimator) {
      return NaN;
    }
    return bwEstimator.defaultEstimate;
  }
  get ttfbEstimate() {
    const {
      bwEstimator
    } = this.abrController;
    if (!bwEstimator) {
      return NaN;
    }
    return bwEstimator.getEstimateTTFB();
  }
  set autoLevelCapping(newLevel) {
    if (this._autoLevelCapping !== newLevel) {
      this.logger.log(`set autoLevelCapping:${newLevel}`);
      this._autoLevelCapping = newLevel;
      this.levelController.checkMaxAutoUpdated();
    }
  }
  get maxHdcpLevel() {
    return this._maxHdcpLevel;
  }
  set maxHdcpLevel(value) {
    if (isHdcpLevel(value) && this._maxHdcpLevel !== value) {
      this._maxHdcpLevel = value;
      this.levelController.checkMaxAutoUpdated();
    }
  }
  get autoLevelEnabled() {
    return this.levelController.manualLevel === -1;
  }
  get manualLevel() {
    return this.levelController.manualLevel;
  }
  get minAutoLevel() {
    const {
      levels,
      config: {
        minAutoBitrate
      }
    } = this;
    if (!levels)
      return 0;
    const len = levels.length;
    for (let i = 0; i < len; i++) {
      if (levels[i].maxBitrate >= minAutoBitrate) {
        return i;
      }
    }
    return 0;
  }
  get maxAutoLevel() {
    const {
      levels,
      autoLevelCapping,
      maxHdcpLevel
    } = this;
    let maxAutoLevel;
    if (autoLevelCapping === -1 && levels != null && levels.length) {
      maxAutoLevel = levels.length - 1;
    } else {
      maxAutoLevel = autoLevelCapping;
    }
    if (maxHdcpLevel) {
      for (let i = maxAutoLevel; i--; ) {
        const hdcpLevel = levels[i].attrs["HDCP-LEVEL"];
        if (hdcpLevel && hdcpLevel <= maxHdcpLevel) {
          return i;
        }
      }
    }
    return maxAutoLevel;
  }
  get firstAutoLevel() {
    return this.abrController.firstAutoLevel;
  }
  get nextAutoLevel() {
    return this.abrController.nextAutoLevel;
  }
  set nextAutoLevel(nextLevel) {
    this.abrController.nextAutoLevel = nextLevel;
  }
  get playingDate() {
    return this.streamController.currentProgramDateTime;
  }
  get mainForwardBufferInfo() {
    return this.streamController.getMainFwdBufferInfo();
  }
  get maxBufferLength() {
    return this.streamController.maxBufferLength;
  }
  setAudioOption(audioOption) {
    var _this$audioTrackContr;
    return ((_this$audioTrackContr = this.audioTrackController) == null ? void 0 : _this$audioTrackContr.setAudioOption(audioOption)) || null;
  }
  setSubtitleOption(subtitleOption) {
    var _this$subtitleTrackCo;
    return ((_this$subtitleTrackCo = this.subtitleTrackController) == null ? void 0 : _this$subtitleTrackCo.setSubtitleOption(subtitleOption)) || null;
  }
  get allAudioTracks() {
    const audioTrackController = this.audioTrackController;
    return audioTrackController ? audioTrackController.allAudioTracks : [];
  }
  get audioTracks() {
    const audioTrackController = this.audioTrackController;
    return audioTrackController ? audioTrackController.audioTracks : [];
  }
  get audioTrack() {
    const audioTrackController = this.audioTrackController;
    return audioTrackController ? audioTrackController.audioTrack : -1;
  }
  set audioTrack(audioTrackId) {
    const audioTrackController = this.audioTrackController;
    if (audioTrackController) {
      audioTrackController.audioTrack = audioTrackId;
    }
  }
  get allSubtitleTracks() {
    const subtitleTrackController = this.subtitleTrackController;
    return subtitleTrackController ? subtitleTrackController.allSubtitleTracks : [];
  }
  get subtitleTracks() {
    const subtitleTrackController = this.subtitleTrackController;
    return subtitleTrackController ? subtitleTrackController.subtitleTracks : [];
  }
  get subtitleTrack() {
    const subtitleTrackController = this.subtitleTrackController;
    return subtitleTrackController ? subtitleTrackController.subtitleTrack : -1;
  }
  get media() {
    return this._media;
  }
  set subtitleTrack(subtitleTrackId) {
    const subtitleTrackController = this.subtitleTrackController;
    if (subtitleTrackController) {
      subtitleTrackController.subtitleTrack = subtitleTrackId;
    }
  }
  get subtitleDisplay() {
    const subtitleTrackController = this.subtitleTrackController;
    return subtitleTrackController ? subtitleTrackController.subtitleDisplay : false;
  }
  set subtitleDisplay(value) {
    const subtitleTrackController = this.subtitleTrackController;
    if (subtitleTrackController) {
      subtitleTrackController.subtitleDisplay = value;
    }
  }
  get lowLatencyMode() {
    return this.config.lowLatencyMode;
  }
  set lowLatencyMode(mode) {
    this.config.lowLatencyMode = mode;
  }
  get liveSyncPosition() {
    return this.latencyController.liveSyncPosition;
  }
  get latency() {
    return this.latencyController.latency;
  }
  get maxLatency() {
    return this.latencyController.maxLatency;
  }
  get targetLatency() {
    return this.latencyController.targetLatency;
  }
  set targetLatency(latency) {
    this.latencyController.targetLatency = latency;
  }
  get drift() {
    return this.latencyController.drift;
  }
  get forceStartLoad() {
    return this.streamController.forceStartLoad;
  }
  get pathways() {
    return this.levelController.pathways;
  }
  get pathwayPriority() {
    return this.levelController.pathwayPriority;
  }
  set pathwayPriority(pathwayPriority) {
    this.levelController.pathwayPriority = pathwayPriority;
  }
  get bufferedToEnd() {
    var _this$bufferControlle;
    return !!((_this$bufferControlle = this.bufferController) != null && _this$bufferControlle.bufferedToEnd);
  }
  get interstitialsManager() {
    var _this$interstitialsCo;
    return ((_this$interstitialsCo = this.interstitialsController) == null ? void 0 : _this$interstitialsCo.interstitialsManager) || null;
  }
  getMediaDecodingInfo(level, audioTracks = this.allAudioTracks) {
    const audioTracksByGroup = getAudioTracksByGroup(audioTracks);
    return getMediaDecodingInfoPromise(level, audioTracksByGroup, navigator.mediaCapabilities);
  }
};
Hls.defaultConfig = void 0;

// dep:hls_js
var hls_js_default = Hls;
export {
  AbrController,
  AttrList,
  AudioStreamController,
  AudioTrackController,
  BasePlaylistController,
  BaseSegment,
  BaseStreamController,
  BufferController,
  CMCDController,
  CapLevelController,
  ChunkMetadata,
  ContentSteeringController,
  Cues,
  DateRange,
  EMEController,
  ErrorActionFlags,
  ErrorController,
  ErrorDetails,
  ErrorTypes,
  Events,
  FPSController,
  FetchLoader,
  Fragment,
  Hls,
  HlsSkip,
  HlsUrlParameters,
  KeySystemFormats,
  KeySystems,
  Level,
  LevelDetails,
  LevelKey,
  LoadStats,
  M3U8Parser,
  MetadataSchema,
  NetworkErrorAction,
  Part,
  PlaylistLevelType,
  SubtitleStreamController,
  SubtitleTrackController,
  TimelineController,
  XhrLoader,
  hls_js_default as default,
  fetchSupported,
  getMediaSource,
  isMSESupported,
  isSupported,
  requestMediaKeySystemAccess
};
//# sourceMappingURL=hls_js.js.map