{"version":3,"file":"index.min.js","sources":["../../xgplayer-helper-utils/es/events/index.js","../../xgplayer-helper-models/es/playlist.js","../../xgplayer-helper-models/es/remuxed-buffer.js","../../xgplayer-helper-models/es/data-view.js","../../xgplayer-helper-models/es/track.js","../../xgplayer-helper-models/es/u8a-buffer.js","../../xgplayer-helper-models/es/track-meta.js","../../xgplayer-helper-models/es/track-sample.js","../../xgplayer-helper-models/es/media-info.js","../../xgplayer-helper-models/es/ts-frag.js","../../xgplayer-helper-utils/node_modules/eventemitter3/index.js","../../xgplayer-helper-utils/es/context/index.js","../../xgplayer-helper-utils/es/crypto/index.js","../../xgplayer-helper-utils/es/mse/index.js","../../xgplayer-helper-utils/es/loader-fetch/speed.js","../../xgplayer-helper-utils/es/loader-fetch/fetch-loader.js","../../xgplayer-helper-utils/es/common/dev-logger.js","../../xgplayer-hls-live/es/mse/hls-live.js","../../xgplayer-helper-codec/es/aac/index.js","../../xgplayer-helper-codec/es/aac/adts.js","../../xgplayer-helper-codec/es/avc/golomb.js","../../xgplayer-helper-codec/es/avc/sps.js","../../xgplayer-helper-codec/es/avc/rbsp.js","../../xgplayer-helper-codec/es/avc/sei.js","../../xgplayer-helper-codec/es/avc/nalunit.js","../../xgplayer-helper-codec/es/hevc/golomb.js","../../xgplayer-helper-codec/es/hevc/sps.js","../../xgplayer-helper-codec/es/hevc/rbsp.js","../../xgplayer-helper-codec/es/hevc/sei.js","../../xgplayer-helper-codec/es/hevc/nalunit.js","../../xgplayer-helper-codec/es/compat/hls.js","../../xgplayer-helper-transmuxers/node_modules/eventemitter3/index.js","../../xgplayer-helper-transmuxers/es/hls/ts-demuxer.js","../../xgplayer-helper-transmuxers/es/hls/ts.js","../../xgplayer-helper-transmuxers/es/hls/m3u8.js","../../xgplayer-helper-transmuxers/node_modules/concat-typed-array/lib/concat.js","../../xgplayer-helper-transmuxers/node_modules/concat-typed-array/lib/index.js","../../xgplayer-helper-transmuxers/es/mp4-remux/buffer.js","../../xgplayer-helper-transmuxers/es/mp4-remux/fmp4.js","../../xgplayer-helper-transmuxers/es/mp4-remux/remuxer.js","../../xgplayer-helper-transmuxers/es/mp4-remux/index.js","../../xgplayer-hls-live/es/mse/config.js","../../xgplayer-hls-live/es/mse/index.js","../../xgplayer-hls-live/es/mobile/hls-live-mobile.js","../../xgplayer-hls-live/es/mobile/config.js","../../xgplayer-hls-live/es/mobile/index.js","../../xgplayer-hls-live/es/index.js","../../xgplayer-hls-vod/es/hls-vod.js","../../xgplayer-hls-vod/es/index.js","../../xgplayer-helper-utils/es/common/func/debounce.js","../src/index.js"],"sourcesContent":["var BROWSER_EVENTS = {\n  VISIBILITY_CHANGE: 'VISIBILITY_CHANGE'\n};\nvar PLAYER_EVENTS = {\n  SEEK: 'SEEK'\n};\n\nvar LOADER_EVENTS = {\n  LADER_START: 'LOADER_START',\n  LOADER_DATALOADED: 'LOADER_DATALOADED',\n  LOADER_COMPLETE: 'LOADER_COMPLETE',\n  LOADER_RESPONSE_HEADERS: 'LOADER_RESPONSE_HEADERS',\n  LOADER_ERROR: 'LOADER_ERROR',\n  LOADER_RETRY: 'LOADER_RETRY',\n  LOADER_TTFB: 'LOADER_TTFB'\n};\n\nvar DEMUX_EVENTS = {\n  DEMUX_START: 'DEMUX_START',\n  DEMUX_COMPLETE: 'DEMUX_COMPLETE',\n  DEMUX_ERROR: 'DEMUX_ERROR',\n  METADATA_PARSED: 'METADATA_PARSED',\n  SEI_PARSED: 'SEI_PARSED',\n  VIDEO_METADATA_CHANGE: 'VIDEO_METADATA_CHANGE',\n  AUDIO_METADATA_CHANGE: 'AUDIO_METADATA_CHANGE',\n  MEDIA_INFO: 'MEDIA_INFO',\n  ISKEYFRAME: 'ISKEYFRAME'\n};\n\nvar REMUX_EVENTS = {\n  REMUX_METADATA: 'REMUX_METADATA',\n  REMUX_MEDIA: 'REMUX_MEDIA',\n  MEDIA_SEGMENT: 'MEDIA_SEGMENT',\n  REMUX_ERROR: 'REMUX_ERROR',\n  INIT_SEGMENT: 'INIT_SEGMENT',\n  DETECT_CHANGE_STREAM: 'DETECT_CHANGE_STREAM',\n  DETECT_CHANGE_STREAM_DISCONTINUE: 'DETECT_CHANGE_STREAM_DISCONTINUE',\n  DETECT_AUDIO_GAP: 'DETECT_AUDIO_GAP',\n  DETECT_LARGE_GAP: 'DETECT_LARGE_GAP',\n  DETECT_AUDIO_OVERLAP: 'DETECT_AUDIO_OVERLAP',\n  RANDOM_ACCESS_POINT: 'RANDOM_ACCESS_POINT',\n  DETECT_FRAG_ID_DISCONTINUE: 'DETECT_FRAG_ID_DISCONTINUE'\n};\n\nvar MSE_EVENTS = {\n  SOURCE_UPDATE_END: 'SOURCE_UPDATE_END',\n  MSE_ERROR: 'MSE_ERROR',\n  MSE_WRONG_TRACK_ADD: 'MSE_WRONG_TRACK_ADD'\n\n  // hls专有events\n};var HLS_EVENTS = {\n  RETRY_TIME_EXCEEDED: 'RETRY_TIME_EXCEEDED'\n};\n\nvar CRYPTO_EVENTS = {\n  START_DECRYPTOO: 'START_DECRYPTO',\n  DECRYPTED: 'DECRYPTED'\n};\nvar ALLEVENTS = Object.assign({}, LOADER_EVENTS, DEMUX_EVENTS, REMUX_EVENTS, MSE_EVENTS, HLS_EVENTS, PLAYER_EVENTS, BROWSER_EVENTS);\n\nvar FlvAllowedEvents = [];\nvar HlsAllowedEvents = [];\n\nfor (var key in ALLEVENTS) {\n  if (ALLEVENTS.hasOwnProperty(key)) {\n    FlvAllowedEvents.push(ALLEVENTS[key]);\n  }\n}\n\nfor (var _key in ALLEVENTS) {\n  if (ALLEVENTS.hasOwnProperty(_key)) {\n    HlsAllowedEvents.push(ALLEVENTS[_key]);\n  }\n}\n\nexport default {\n  ALLEVENTS: ALLEVENTS,\n  HLS_EVENTS: HLS_EVENTS,\n  REMUX_EVENTS: REMUX_EVENTS,\n  DEMUX_EVENTS: DEMUX_EVENTS,\n  MSE_EVENTS: MSE_EVENTS,\n  LOADER_EVENTS: LOADER_EVENTS,\n  FlvAllowedEvents: FlvAllowedEvents,\n  HlsAllowedEvents: HlsAllowedEvents,\n  CRYPTO_EVENTS: CRYPTO_EVENTS,\n  PLAYER_EVENTS: PLAYER_EVENTS,\n  BROWSER_EVENTS: BROWSER_EVENTS\n};","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @typedef {Object} TSFrag\n * @property {number} duration\n * @property {boolean} downloaded\n * @property {boolean} downloading\n * @property {number=} start\n * @property {number} cc\n * @property {boolean} discontinue\n */\n\nvar Playlist = function () {\n  function Playlist(configs) {\n    _classCallCheck(this, Playlist);\n\n    /** @type {string} */\n    this._baseURL = '';\n    /** @type {Object.<number, string>} */\n    this._list = {};\n    /** @type {Object.<string, TSFrag>} */\n    this._ts = {};\n    /** @type {number} */\n    this.version = 0;\n    /** @type {number} */\n    this.sequence = -1;\n    /** @type {number} */\n    this.targetduration = 0;\n    /** @type {number} */\n    this.duration = 0;\n    /** @type {number} */\n    this.fragLength = 0;\n    /** @type {TSFrag | undefined} */\n    this._lastget = undefined;\n    /** @type {boolean} */\n    this.end = false; // 判断live | vod , 对点播或直播结束时存在 EXT-X-ENDLIST\n    /** @type {boolean} */\n    this.autoclear = configs.autoclear || false;\n    /** @type {*} */\n    this.logger = configs.logger;\n    /** @type {string[]} */\n    this.downloadedUrls = [];\n    this._avgSegmentDuration = 4;\n  }\n\n  /**\n   * @return {Object<number, string>}\n   */\n\n\n  _createClass(Playlist, [{\n    key: 'push',\n\n\n    /**\n     * add a ts frag to play list\n     * @param {string} tsURL ts frag url\n     * @param {number} duration ts frag duration\n     * @param {boolean} discontinue has #EXT-X-DISCONTINUITY tag before this frag\n     * @param {number} id\n     * @param {number} cc\n     */\n    value: function push(tsURL, duration, discontinue, id, cc, isLast) {\n      if (!this._ts[tsURL]) {\n        this._ts[tsURL] = {\n          duration: duration,\n          downloaded: false,\n          downloading: false,\n          start: this.duration,\n          discontinue: !!discontinue,\n          id: id,\n          cc: cc,\n          isLast: isLast || false\n        };\n        this._list[this.duration] = tsURL;\n        this.duration += duration;\n        this.fragLength += 1;\n      }\n    }\n\n    /**\n     * delete a fragment from playlist\n     * @param {string} url\n     */\n\n  }, {\n    key: 'deleteFrag',\n    value: function deleteFrag(url) {\n      if (this._ts[url]) {\n        if (this._ts[url].start > this._lastget.time) {\n          this._lastget = {\n            duration: this._ts[url].duration,\n            time: this._ts[url].start,\n            downloaded: false,\n            downloading: false,\n            url: url,\n            id: this._ts[url].id\n          };\n        }\n        delete this._list[this._ts[url].start];\n        delete this._ts[url];\n        this.fragLength -= 1;\n      }\n    }\n  }, {\n    key: '_calcAvgFrgmentDuration',\n    value: function _calcAvgFrgmentDuration(data) {\n      if (!data.frags) return data.targetduration;\n      var fragLen = data.frags.length;\n      return Math.floor(data.duration / fragLen / 1000);\n    }\n\n    /**\n     * add m3u8 to current play list\n     * @param {*} data\n     * @param {boolean} deletepre\n     */\n\n  }, {\n    key: 'pushM3U8',\n    value: function pushM3U8(data, deletepre) {\n      // 常规信息替换\n      if (!data) {\n        throw new Error('No m3u8 data received.');\n      }\n      this.version = data.version;\n\n      this.targetduration = data.targetduration;\n\n      this._avgSegmentDuration = Math.min(this.targetduration, this._calcAvgFrgmentDuration(data));\n\n      if (data.encrypt && !this.encrypt) {\n        this.encrypt = data.encrypt;\n      }\n\n      this.end = data.end || false;\n\n      if (!data.sequence) {\n        data.sequence = 0;\n      }\n\n      // 新分片信息\n      if (data.sequence > this.sequence) {\n        var len = data.frags.length;\n        if (this.logger) {\n          this.logger.log('PLAYLIST', 'new playlist [' + data.sequence + ', ' + (data.sequence + len - 1) + ']');\n        }\n        this.sequence = data.sequence;\n        var newfraglist = [];\n        for (var i = 0; i < len; i++) {\n          var frag = data.frags[i];\n          if (!this._ts[frag.url] && this.downloadedUrls.indexOf(frag.url) < 0) {\n            newfraglist.push(frag.url);\n            this.push(frag.url, frag.duration, frag.discontinue, frag.id, frag.cc, frag.isLast);\n          }\n        }\n\n        if (newfraglist.length < 1) {\n          throw new Error('Can not read ts file list.');\n        }\n\n        if (deletepre) {\n          var tslist = this.getTsList();\n          for (var _i = 0; _i < tslist.length; _i++) {\n            if (newfraglist.indexOf(tslist[_i]) < 0) {\n              this.deleteFrag(tslist[_i]);\n            }\n          }\n        }\n      } else {\n        throw new Error('Old m3u8 file received, ' + data.sequence);\n      }\n    }\n\n    /**\n     * return ts url list\n     * @return {string[]}\n     */\n\n  }, {\n    key: 'getTsList',\n    value: function getTsList() {\n      return Object.keys(this._ts);\n    }\n\n    /**\n     * mark a ts frag as downloaded / not downloaded\n     * @param {string} tsname\n     * @param {boolean} isloaded\n     */\n\n  }, {\n    key: 'downloaded',\n    value: function downloaded(tsname, isloaded) {\n      var ts = this._ts[tsname];\n      if (ts) {\n        ts.downloaded = isloaded;\n      }\n    }\n\n    /**\n     * mark a ts frag as loading / not loading\n     * @param {string} tsname\n     * @param {boolean} loading\n     */\n\n  }, {\n    key: 'downloading',\n    value: function downloading(tsname, loading) {\n      var ts = this._ts[tsname];\n      if (ts) {\n        ts.downloading = loading;\n      }\n    }\n\n    /**\n     * get a frag by ts name\n     * @param name\n     * @return {TSFrag}\n     */\n\n  }, {\n    key: 'getTsByName',\n    value: function getTsByName(name) {\n      return this._ts[name];\n    }\n\n    /**\n     * get ts frag by timestamp\n     * @param {number} time\n     * @return {undefined|TSFrag}\n     */\n\n  }, {\n    key: 'getTs',\n    value: function getTs(time) {\n      var timelist = Object.keys(this._list);\n      var ts = void 0;\n\n      if (time === undefined) {\n        if (this._lastget) {\n          time = this._lastget.time + this._lastget.duration;\n        } else {\n          time = 0;\n        }\n      }\n\n      if (timelist.length < 1 || time >= this.duration) {\n        return undefined;\n      }\n      timelist = timelist.sort(function (a, b) {\n        return parseFloat(a) - parseFloat(b);\n      });\n      for (var i = 0; i < timelist.length; i++) {\n        if (time >= parseInt(timelist[i])) {\n          var url = this._list[timelist[i]];\n          var downloaded = this._ts[url].downloaded;\n          var downloading = this._ts[url].downloading;\n          ts = {\n            url: url,\n            downloaded: downloaded,\n            downloading: downloading,\n            time: parseInt(timelist[i]),\n            duration: parseInt(this._ts[url].duration),\n            id: this._ts[url].id,\n            cc: this._ts[url].cc,\n            isLast: this._ts[url].isLast\n          };\n          if (this.autoclear && this._lastget) {\n            delete this._ts[this._lastget.url];\n            delete this._list[this._lastget.time];\n          }\n          this._lastget = ts;\n        } else {\n          break;\n        }\n      }\n      if (ts) {\n        this.downloadedUrls.push(ts.url);\n      }\n      return ts;\n    }\n\n    /**\n     * get last downloaded ts frag\n     * @return {TSFrag|undefined}\n     */\n\n  }, {\n    key: 'getLastDownloadedTs',\n    value: function getLastDownloadedTs() {\n      var timelist = Object.keys(this._list).sort(function (a, b) {\n        var result = Number(a) - Number(b);\n        return result;\n      });\n      var found = void 0;\n      for (var i = 0; i < timelist.length; i++) {\n        var url = this._list[timelist[i]];\n        var downloaded = this._ts[url].downloaded;\n        var downloading = this._ts[url].downloading;\n        if (downloaded) {\n          found = { url: url, downloaded: downloaded, downloading: downloading, time: parseInt(timelist[i]), duration: parseInt(this._ts[url].duration) };\n        } else {\n          break;\n        }\n      }\n\n      return found;\n    }\n  }, {\n    key: 'clear',\n    value: function clear() {\n      this._baseURL = '';\n      this._list = {};\n      this._ts = {};\n      this.version = 0;\n      this.sequence = -1;\n      this.targetduration = 0;\n      this.duration = 0;\n    }\n  }, {\n    key: 'clearDownloaded',\n    value: function clearDownloaded() {\n      var list = Object.keys(this._ts);\n      for (var i = 0, l = list.length; i < l; i++) {\n        var ts = this._ts[list[i]];\n        ts.downloaded = false;\n        ts.downloading = false;\n      }\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this._baseURL = '';\n      this._list = {};\n      this._ts = {};\n      this.version = 0;\n      this.sequence = -1;\n      this.targetduration = 0;\n      this.duration = 0;\n      this.fragLength = 0;\n      this._lastget = undefined;\n      this.autoclear = false;\n    }\n  }, {\n    key: 'resetSequence',\n    value: function resetSequence() {\n      this.sequence = -1;\n    }\n  }, {\n    key: 'list',\n    get: function get() {\n      return this._list;\n    }\n\n    /**\n     * @param {string} baseURL\n     */\n\n  }, {\n    key: 'baseURL',\n    set: function set(baseURL) {\n      if (this.baseURL !== baseURL) {\n        this.clear();\n        this._baseURL = baseURL;\n      }\n    }\n\n    /**\n     * base cdn url for ts fragments\n     * @return {string}\n     */\n    ,\n    get: function get() {\n      return this._baseURL;\n    }\n  }, {\n    key: 'avgSegmentDuration',\n    get: function get() {\n      return this._avgSegmentDuration;\n    }\n  }]);\n\n  return Playlist;\n}();\n\nexport default Playlist;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nexport var RemuxedBuffer = function RemuxedBuffer() {\n  _classCallCheck(this, RemuxedBuffer);\n\n  /** @type{string} */\n  this.mimetype = '';\n  /** @type{Uint8Array|null} */\n  this.init = null;\n  /** @type{Uint8Array[]} */\n  this.data = [];\n  /** @type{number} */\n  this.bufferDuration = 0;\n};\n\nvar RemuxedBufferManager = function () {\n  function RemuxedBufferManager() {\n    _classCallCheck(this, RemuxedBufferManager);\n\n    /** @type{Object.<string, RemuxedBuffer>} */\n    this.sources = {};\n  }\n\n  /**\n   *\n   * @param {string} name\n   * @return {RemuxedBuffer}\n   */\n\n\n  _createClass(RemuxedBufferManager, [{\n    key: 'getSource',\n    value: function getSource(name) {\n      return this.sources[name];\n    }\n\n    /**\n     * @param {string} name\n     * @return {RemuxedBuffer}\n     */\n\n  }, {\n    key: 'createSource',\n    value: function createSource(name) {\n      this.sources[name] = new RemuxedBuffer();\n      return this.sources[name];\n    }\n  }, {\n    key: 'clear',\n    value: function clear() {\n      this.sources = {};\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this.clear();\n    }\n  }]);\n\n  return RemuxedBufferManager;\n}();\n\nexport default RemuxedBufferManager;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar XGDataView = function () {\n  function XGDataView(buffer) {\n    _classCallCheck(this, XGDataView);\n\n    if (buffer instanceof ArrayBuffer) {\n      /** @type {ArrayBuffer} */\n      this.buffer = buffer;\n      /** @type {DataView} */\n      this.dataview = new DataView(buffer);\n      /** @type {number} */\n      this.dataview.position = 0;\n    } else {\n      throw new Error('data is invalid');\n    }\n  }\n\n  /**\n   * byffer length\n   * @return {number}\n   */\n\n\n  _createClass(XGDataView, [{\n    key: 'back',\n\n\n    /**\n     * move read position backward\n     * @param count\n     */\n    value: function back(count) {\n      this.position -= count;\n    }\n  }, {\n    key: 'getUint8',\n    value: function getUint8(offset) {\n      return this.dataview.getUint8(offset);\n    }\n\n    /**\n     * move read position forward\n     * @param count\n     */\n\n  }, {\n    key: 'skip',\n    value: function skip(count) {\n      var loop = Math.floor(count / 4);\n      var last = count % 4;\n      for (var i = 0; i < loop; i++) {\n        XGDataView.readByte(this.dataview, 4);\n      }\n      if (last > 0) {\n        XGDataView.readByte(this.dataview, last);\n      }\n    }\n\n    /**\n     * [readByte 从DataView中读取数据]\n     * @param  {DataView} buffer [DataView实例]\n     * @param  {Number} size   [读取字节数]\n     * @return {Number}        [整数]\n     */\n\n  }, {\n    key: 'readUint8',\n\n\n    /**\n     * @return {Number}\n     */\n    value: function readUint8() {\n      return XGDataView.readByte(this.dataview, 1);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readUint16',\n    value: function readUint16() {\n      return XGDataView.readByte(this.dataview, 2);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readUint24',\n    value: function readUint24() {\n      return XGDataView.readByte(this.dataview, 3);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readUint32',\n    value: function readUint32() {\n      return XGDataView.readByte(this.dataview, 4);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readUint64',\n    value: function readUint64() {\n      return XGDataView.readByte(this.dataview, 8);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readInt8',\n    value: function readInt8() {\n      return XGDataView.readByte(this.dataview, 1, true);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readInt16',\n    value: function readInt16() {\n      return XGDataView.readByte(this.dataview, 2, true);\n    }\n\n    /**\n     * @return {Number}\n     */\n\n  }, {\n    key: 'readInt32',\n    value: function readInt32() {\n      return XGDataView.readByte(this.dataview, 4, true);\n    }\n\n    /**\n     * @return {Uint8Array}\n     */\n\n  }, {\n    key: 'writeUint32',\n    value: function writeUint32(value) {\n      return new Uint8Array([value >>> 24 & 0xff, value >>> 16 & 0xff, value >>> 8 & 0xff, value & 0xff]);\n    }\n  }, {\n    key: 'length',\n    get: function get() {\n      return this.buffer.byteLength;\n    }\n\n    /**\n     * set current read position of data-view\n     * @param value\n     */\n\n  }, {\n    key: 'position',\n    set: function set(value) {\n      this.dataview.position = value;\n    }\n\n    /**\n     * set current read position of data-view\n     * @param value\n     */\n    ,\n    get: function get() {\n      return this.dataview.position;\n    }\n  }], [{\n    key: 'readByte',\n    value: function readByte(buffer, size, sign) {\n      var res = void 0;\n      switch (size) {\n        case 1:\n          if (sign) {\n            res = buffer.getInt8(buffer.position);\n          } else {\n            res = buffer.getUint8(buffer.position);\n          }\n          break;\n        case 2:\n          if (sign) {\n            res = buffer.getInt16(buffer.position);\n          } else {\n            res = buffer.getUint16(buffer.position);\n          }\n          break;\n        case 3:\n          if (sign) {\n            throw new Error('not supported for readByte 3');\n          } else {\n            res = buffer.getUint8(buffer.position) << 16;\n            res |= buffer.getUint8(buffer.position + 1) << 8;\n            res |= buffer.getUint8(buffer.position + 2);\n          }\n          break;\n        case 4:\n          if (sign) {\n            res = buffer.getInt32(buffer.position);\n          } else {\n            res = buffer.getUint32(buffer.position);\n          }\n          break;\n        case 8:\n          if (sign) {\n            throw new Error('not supported for readBody 8');\n          } else {\n            res = buffer.getUint32(buffer.position) << 32;\n            res |= buffer.getUint32(buffer.position + 4);\n          }\n          break;\n        default:\n          res = '';\n      }\n      buffer.position += size;\n      return res;\n    }\n  }]);\n\n  return XGDataView;\n}();\n\nexport default XGDataView;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Track = function () {\n  function Track() {\n    _classCallCheck(this, Track);\n\n    /** @type {number} */\n    this.id = -1;\n    /** @type {number} */\n    this.sequenceNumber = 0;\n    /** @type {*} */\n    this.samples = [];\n    /** @type {*} */\n    this.droppedSamples = [];\n    /** @type {number} */\n    this.length = 0;\n  }\n\n  _createClass(Track, [{\n    key: 'reset',\n    value: function reset() {\n      this.sequenceNumber = 0;\n      this.samples = [];\n      this.length = 0;\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this.reset();\n      this.id = -1;\n    }\n  }]);\n\n  return Track;\n}();\n\nexport default Track;\n\n\nexport var AudioTrack = function (_Track) {\n  _inherits(AudioTrack, _Track);\n\n  function AudioTrack() {\n    _classCallCheck(this, AudioTrack);\n\n    /** @type {string} */\n    var _this = _possibleConstructorReturn(this, (AudioTrack.__proto__ || Object.getPrototypeOf(AudioTrack)).call(this));\n\n    _this.TAG = 'AudioTrack';\n    /** @type {string} */\n    _this.type = 'audio';\n    return _this;\n  }\n\n  return AudioTrack;\n}(Track);\n\nexport var VideoTrack = function (_Track2) {\n  _inherits(VideoTrack, _Track2);\n\n  function VideoTrack() {\n    _classCallCheck(this, VideoTrack);\n\n    /** @type {string} */\n    var _this2 = _possibleConstructorReturn(this, (VideoTrack.__proto__ || Object.getPrototypeOf(VideoTrack)).call(this));\n\n    _this2.TAG = 'VideoTrack';\n    /** @type {string} */\n    _this2.type = 'video';\n    /** @type {number} */\n    _this2.dropped = 0;\n    /** @type {number} */\n    _this2.sequenceNumber = 0;\n    return _this2;\n  }\n\n  _createClass(VideoTrack, [{\n    key: 'reset',\n    value: function reset() {\n      this.sequenceNumber = 0;\n      this.samples = [];\n      this.length = 0;\n      this.dropped = 0;\n    }\n  }]);\n\n  return VideoTrack;\n}(Track);\n\nexport var Tracks = function () {\n  function Tracks() {\n    _classCallCheck(this, Tracks);\n\n    this.audioTrack = null;\n    this.videoTrack = null;\n  }\n\n  _createClass(Tracks, [{\n    key: 'destroy',\n    value: function destroy() {\n      this.audioTrack = null;\n      this.videoTrack = null;\n    }\n  }]);\n\n  return Tracks;\n}();","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar XgBuffer = function () {\n  /**\n   * A buffer to store loaded data.\n   *\n   * @class LoaderBuffer\n   * @param {number} length - Optional the buffer size\n   */\n  function XgBuffer(length) {\n    _classCallCheck(this, XgBuffer);\n\n    this.length = length || 0;\n    this.historyLen = length || 0;\n    this.array = [];\n    this.offset = 0;\n  }\n\n  /**\n   * The function to push data.\n   *\n   * @param {Uint8Array} data - The data to push into the buffer\n   */\n\n\n  _createClass(XgBuffer, [{\n    key: \"push\",\n    value: function push(data) {\n      this.array.push(data);\n      this.length += data.byteLength;\n      this.historyLen += data.byteLength;\n    }\n\n    /**\n     * The function to shift data.\n     *\n     * @param {number} length - The size of shift.\n     */\n\n  }, {\n    key: \"shift\",\n    value: function shift(length) {\n      if (this.array.length < 1) {\n        return new Uint8Array(0);\n      }\n\n      if (length === undefined) {\n        return this._shiftBuffer();\n      }\n      if (this.offset + length === this.array[0].length) {\n        var _ret = this.array[0].slice(this.offset, this.offset + length);\n        this.offset = 0;\n        this.array.shift();\n        this.length -= length;\n        return _ret;\n      }\n\n      if (this.offset + length < this.array[0].length) {\n        var _ret2 = this.array[0].slice(this.offset, this.offset + length);\n        this.offset += length;\n        this.length -= length;\n        return _ret2;\n      }\n\n      var ret = new Uint8Array(length);\n      var tmpoff = 0;\n      while (this.array.length > 0 && length > 0) {\n        if (this.offset + length < this.array[0].length) {\n          var tmp = this.array[0].slice(this.offset, this.offset + length);\n          ret.set(tmp, tmpoff);\n          this.offset += length;\n          this.length -= length;\n          length = 0;\n          break;\n        } else {\n          // console.log('mark1')\n          var templength = this.array[0].length - this.offset;\n          ret.set(this.array[0].slice(this.offset, this.array[0].length), tmpoff);\n          this.array.shift();\n          this.offset = 0;\n          tmpoff += templength;\n          this.length -= templength;\n          length -= templength;\n        }\n      }\n      return ret;\n    }\n\n    /**\n     * Function to clear the buffer.\n     */\n\n  }, {\n    key: \"clear\",\n    value: function clear() {\n      this.array = [];\n      this.length = 0;\n      this.offset = 0;\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this.clear();\n      this.historyLen = 0;\n    }\n\n    /**\n     * Function to shift one unit8Array.\n     */\n\n  }, {\n    key: \"_shiftBuffer\",\n    value: function _shiftBuffer() {\n      this.length -= this.array[0].length;\n      this.offset = 0;\n      return this.array.shift();\n    }\n\n    /**\n     * Convert uint8 data to number.\n     *\n     * @param {number} start - the start postion.\n     * @param {number} length - the length of data.\n     */\n\n  }, {\n    key: \"toInt\",\n    value: function toInt(start, length) {\n      var retInt = 0;\n      var i = this.offset + start;\n      while (i < this.offset + length + start) {\n        if (i < this.array[0].length) {\n          retInt = retInt * 256 + this.array[0][i];\n        } else if (this.array[1]) {\n          retInt = retInt * 256 + this.array[1][i - this.array[0].length];\n        }\n\n        i++;\n      }\n      return retInt;\n    }\n  }]);\n\n  return XgBuffer;\n}();\n\nexport default XgBuffer;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nexport var AudioTrackMeta = function () {\n  function AudioTrackMeta(meta) {\n    _classCallCheck(this, AudioTrackMeta);\n\n    var _default = {\n      sampleRate: 48000,\n      channelCount: 2,\n      codec: 'mp4a.40.2',\n      config: [41, 401, 136, 0],\n      duration: 0,\n      id: 2,\n      refSampleDuration: 21,\n      sampleRateIndex: 3,\n      timescale: 1000,\n      type: 'audio'\n    };\n    if (meta) {\n      return Object.assign({}, _default, meta);\n    }\n    return _default;\n  }\n\n  _createClass(AudioTrackMeta, [{\n    key: 'destroy',\n    value: function destroy() {\n      this.init = null;\n    }\n  }]);\n\n  return AudioTrackMeta;\n}();\n\nexport var VideoTrackMeta = function () {\n  function VideoTrackMeta(meta) {\n    _classCallCheck(this, VideoTrackMeta);\n\n    var _default = {\n      avcc: null,\n      sps: new Uint8Array(0),\n      pps: new Uint8Array(0),\n      chromaFormat: 420,\n      codec: 'avc1.640020',\n      codecHeight: 720,\n      codecWidth: 1280,\n      duration: 0,\n      frameRate: {\n        fixed: true,\n        fps: 25,\n        fps_num: 25000,\n        fps_den: 1000\n      },\n      id: 1,\n      level: '3.2',\n      presentHeight: 720,\n      presentWidth: 1280,\n      profile: 'High',\n      refSampleDuration: 40,\n      parRatio: {\n        height: 1,\n        width: 1\n      },\n      timescale: 1000,\n      type: 'video'\n    };\n\n    if (meta) {\n      return Object.assign({}, _default, meta);\n    }\n    return _default;\n  }\n\n  _createClass(VideoTrackMeta, [{\n    key: 'destroy',\n    value: function destroy() {\n      this.init = null;\n      this.sps = null;\n      this.pps = null;\n    }\n  }]);\n\n  return VideoTrackMeta;\n}();","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @typedef {Object} TAudioSample\n * @property {number} dts\n * @property {number} pts\n * @property {number} originDts\n * @property {Uint8Array} data\n */\n\n/**\n * @typedef {Object} TVideoSample\n * @property {number} dts\n * @property {number} pts\n * @property {boolean} isKeyframe\n * @property {number} originDts\n * @property {Uint8Array} data\n * @property {Array<any>} nals\n */\n\nexport var AudioSample = function () {\n  function AudioSample(info) {\n    _classCallCheck(this, AudioSample);\n\n    var _default = AudioSample.getDefault();\n    if (!info) {\n      return _default;\n    }\n    return Object.assign({}, _default, info);\n  }\n\n  /**\n   * default audio sample\n   * @return {TAudioSample}\n   */\n\n\n  _createClass(AudioSample, null, [{\n    key: \"getDefault\",\n    value: function getDefault() {\n      return {\n        dts: -1,\n        pts: -1,\n        originDts: -1,\n        data: new Uint8Array()\n      };\n    }\n  }]);\n\n  return AudioSample;\n}();\n\nexport var VideoSample = function () {\n  /**\n   * @constructor\n   * @param info\n   * @return {TVideoSample}\n   */\n  function VideoSample(info) {\n    _classCallCheck(this, VideoSample);\n\n    var _default = VideoSample.getDefault();\n\n    if (!info) {\n      return _default;\n    }\n    var sample = Object.assign({}, _default, info);\n\n    return sample;\n  }\n\n  /**\n   * default video sample\n   * @return {TVideoSample}\n   */\n\n\n  _createClass(VideoSample, null, [{\n    key: \"getDefault\",\n    value: function getDefault() {\n      return {\n        dts: -1,\n        pts: undefined,\n        isKeyframe: false, // is Random access point\n        originDts: -1,\n        data: new Uint8Array(),\n        nals: []\n      };\n    }\n  }]);\n\n  return VideoSample;\n}();","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @typedef {Object} VideoMediaInfo\n * @property {string|null} codec\n * @property {number|null} width\n * @property {number|null} height\n * @property {string|null} profile\n * @property {{fixed: boolean,fps: number,fps_num: number,fps_den: number}} frameRate\n * @property {string|null} chromaFormat\n * @property {{width:number,height:number}} parRatio\n */\n\n/**\n * @typedef {Object} AudioMediaInfo\n * @property {string|null} codec\n * @property {number|null} sampleRate\n * @property {number|null} sampleRateIndex\n * @property {number|null} channelCount\n */\n\n/**\n * @param {Object} obj\n * @return {boolean}\n */\nvar isObjectFilled = function isObjectFilled(obj) {\n  for (var key in obj) {\n    if (obj.hasOwnProperty(key)) {\n      if (obj[key] === null) {\n        return false;\n      }\n    }\n  }\n  return true;\n};\n\nvar MediaInfo = function () {\n  function MediaInfo() {\n    _classCallCheck(this, MediaInfo);\n\n    this.mimeType = null;\n    this.duration = null;\n\n    /** @type {boolean} */\n    this.hasVideo = false;\n    /**\n     * video media info\n     * @type {VideoMediaInfo}\n     */\n    this.video = {\n      codec: null,\n      width: null,\n      height: null,\n      profile: null,\n      level: null,\n      frameRate: {\n        fixed: true,\n        fps: 25,\n        fps_num: 25000,\n        fps_den: 1000\n      },\n      chromaFormat: null,\n      parRatio: {\n        width: 1,\n        height: 1\n      }\n      /** @type {boolean} */\n    };this.hasAudio = false;\n\n    /**\n     * video media info\n     * @type {AudioMediaInfo}\n     */\n    this.audio = {\n      codec: null,\n      sampleRate: null,\n      sampleRateIndex: null,\n      channelCount: null\n    };\n  }\n\n  _createClass(MediaInfo, [{\n    key: \"isComplete\",\n    value: function isComplete() {\n      return MediaInfo.isBaseInfoReady(this) && MediaInfo.isVideoReady(this) && MediaInfo.isAudioReady(this);\n    }\n  }], [{\n    key: \"isBaseInfoReady\",\n    value: function isBaseInfoReady(mediaInfo) {\n      return isObjectFilled(mediaInfo);\n    }\n  }, {\n    key: \"isVideoReady\",\n    value: function isVideoReady(mediaInfo) {\n      if (!mediaInfo.hasVideo) {\n        return true;\n      }\n\n      return isObjectFilled(mediaInfo.video);\n    }\n  }, {\n    key: \"isAudioReady\",\n    value: function isAudioReady(mediaInfo) {\n      if (!mediaInfo.hasAudio) {\n        return true;\n      }\n\n      return isObjectFilled(mediaInfo.video);\n    }\n  }]);\n\n  return MediaInfo;\n}();\n\nexport default MediaInfo;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @typedef {Object} TsFragProps\n * @property {number} start\n * @property {number} duration\n * @property {string} url\n * @property {boolean} discontinue\n * @property {number} id\n * @property {number} cc\n */\nvar TsFrag = function () {\n  _createClass(TsFrag, null, [{\n    key: 'getDefault',\n\n    /**\n     *\n     * @return TsFrag\n     */\n    value: function getDefault() {\n      return {\n        id: -1,\n        url: '',\n        start: -1,\n        duration: -1,\n        discontinue: false,\n        cc: -1\n      };\n    }\n    /**\n     *\n     * @param {TsFragProps} props\n     */\n\n  }]);\n\n  function TsFrag(props) {\n    _classCallCheck(this, TsFrag);\n\n    var merged = Object.assign({}, TsFrag.getDefault(), props);\n\n    this.id = merged.id;\n\n    this.url = merged.url;\n\n    this.start = merged.start;\n\n    this.duration = merged.duration;\n\n    this.discontinue = merged.discontinue;\n\n    this.cc = merged.cc;\n  }\n\n  return TsFrag;\n}();\n\nexport default TsFrag;","'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n  , prefix = '~';\n\n/**\n * Constructor to create a storage for our `EE` objects.\n * An `Events` instance is a plain object whose properties are event names.\n *\n * @constructor\n * @private\n */\nfunction Events() {}\n\n//\n// We try to not inherit from `Object.prototype`. In some engines creating an\n// instance in this way is faster than calling `Object.create(null)` directly.\n// If `Object.create(null)` is not supported we prefix the event names with a\n// character to make sure that the built-in object properties are not\n// overridden or used as an attack vector.\n//\nif (Object.create) {\n  Events.prototype = Object.create(null);\n\n  //\n  // This hack is needed because the `__proto__` property is still inherited in\n  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.\n  //\n  if (!new Events().__proto__) prefix = false;\n}\n\n/**\n * Representation of a single event listener.\n *\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} [once=false] Specify if the listener is a one-time listener.\n * @constructor\n * @private\n */\nfunction EE(fn, context, once) {\n  this.fn = fn;\n  this.context = context;\n  this.once = once || false;\n}\n\n/**\n * Add a listener for a given event.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} once Specify if the listener is a one-time listener.\n * @returns {EventEmitter}\n * @private\n */\nfunction addListener(emitter, event, fn, context, once) {\n  if (typeof fn !== 'function') {\n    throw new TypeError('The listener must be a function');\n  }\n\n  var listener = new EE(fn, context || emitter, once)\n    , evt = prefix ? prefix + event : event;\n\n  if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;\n  else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);\n  else emitter._events[evt] = [emitter._events[evt], listener];\n\n  return emitter;\n}\n\n/**\n * Clear event by name.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} evt The Event name.\n * @private\n */\nfunction clearEvent(emitter, evt) {\n  if (--emitter._eventsCount === 0) emitter._events = new Events();\n  else delete emitter._events[evt];\n}\n\n/**\n * Minimal `EventEmitter` interface that is molded against the Node.js\n * `EventEmitter` interface.\n *\n * @constructor\n * @public\n */\nfunction EventEmitter() {\n  this._events = new Events();\n  this._eventsCount = 0;\n}\n\n/**\n * Return an array listing the events for which the emitter has registered\n * listeners.\n *\n * @returns {Array}\n * @public\n */\nEventEmitter.prototype.eventNames = function eventNames() {\n  var names = []\n    , events\n    , name;\n\n  if (this._eventsCount === 0) return names;\n\n  for (name in (events = this._events)) {\n    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);\n  }\n\n  if (Object.getOwnPropertySymbols) {\n    return names.concat(Object.getOwnPropertySymbols(events));\n  }\n\n  return names;\n};\n\n/**\n * Return the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Array} The registered listeners.\n * @public\n */\nEventEmitter.prototype.listeners = function listeners(event) {\n  var evt = prefix ? prefix + event : event\n    , handlers = this._events[evt];\n\n  if (!handlers) return [];\n  if (handlers.fn) return [handlers.fn];\n\n  for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {\n    ee[i] = handlers[i].fn;\n  }\n\n  return ee;\n};\n\n/**\n * Return the number of listeners listening to a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Number} The number of listeners.\n * @public\n */\nEventEmitter.prototype.listenerCount = function listenerCount(event) {\n  var evt = prefix ? prefix + event : event\n    , listeners = this._events[evt];\n\n  if (!listeners) return 0;\n  if (listeners.fn) return 1;\n  return listeners.length;\n};\n\n/**\n * Calls each of the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Boolean} `true` if the event had listeners, else `false`.\n * @public\n */\nEventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {\n  var evt = prefix ? prefix + event : event;\n\n  if (!this._events[evt]) return false;\n\n  var listeners = this._events[evt]\n    , len = arguments.length\n    , args\n    , i;\n\n  if (listeners.fn) {\n    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);\n\n    switch (len) {\n      case 1: return listeners.fn.call(listeners.context), true;\n      case 2: return listeners.fn.call(listeners.context, a1), true;\n      case 3: return listeners.fn.call(listeners.context, a1, a2), true;\n      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;\n      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;\n      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;\n    }\n\n    for (i = 1, args = new Array(len -1); i < len; i++) {\n      args[i - 1] = arguments[i];\n    }\n\n    listeners.fn.apply(listeners.context, args);\n  } else {\n    var length = listeners.length\n      , j;\n\n    for (i = 0; i < length; i++) {\n      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);\n\n      switch (len) {\n        case 1: listeners[i].fn.call(listeners[i].context); break;\n        case 2: listeners[i].fn.call(listeners[i].context, a1); break;\n        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;\n        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;\n        default:\n          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {\n            args[j - 1] = arguments[j];\n          }\n\n          listeners[i].fn.apply(listeners[i].context, args);\n      }\n    }\n  }\n\n  return true;\n};\n\n/**\n * Add a listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.on = function on(event, fn, context) {\n  return addListener(this, event, fn, context, false);\n};\n\n/**\n * Add a one-time listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.once = function once(event, fn, context) {\n  return addListener(this, event, fn, context, true);\n};\n\n/**\n * Remove the listeners of a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn Only remove the listeners that match this function.\n * @param {*} context Only remove the listeners that have this context.\n * @param {Boolean} once Only remove one-time listeners.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {\n  var evt = prefix ? prefix + event : event;\n\n  if (!this._events[evt]) return this;\n  if (!fn) {\n    clearEvent(this, evt);\n    return this;\n  }\n\n  var listeners = this._events[evt];\n\n  if (listeners.fn) {\n    if (\n      listeners.fn === fn &&\n      (!once || listeners.once) &&\n      (!context || listeners.context === context)\n    ) {\n      clearEvent(this, evt);\n    }\n  } else {\n    for (var i = 0, events = [], length = listeners.length; i < length; i++) {\n      if (\n        listeners[i].fn !== fn ||\n        (once && !listeners[i].once) ||\n        (context && listeners[i].context !== context)\n      ) {\n        events.push(listeners[i]);\n      }\n    }\n\n    //\n    // Reset the array, or remove it completely if we have no more listeners.\n    //\n    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;\n    else clearEvent(this, evt);\n  }\n\n  return this;\n};\n\n/**\n * Remove all listeners, or those of the specified event.\n *\n * @param {(String|Symbol)} [event] The event name.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {\n  var evt;\n\n  if (event) {\n    evt = prefix ? prefix + event : event;\n    if (this._events[evt]) clearEvent(this, evt);\n  } else {\n    this._events = new Events();\n    this._eventsCount = 0;\n  }\n\n  return this;\n};\n\n//\n// Alias methods names because people roll like that.\n//\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.addListener = EventEmitter.prototype.on;\n\n//\n// Expose the prefix.\n//\nEventEmitter.prefixed = prefix;\n\n//\n// Allow `EventEmitter` to be imported as module namespace.\n//\nEventEmitter.EventEmitter = EventEmitter;\n\n//\n// Expose the module.\n//\nif ('undefined' !== typeof module) {\n  module.exports = EventEmitter;\n}\n","var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport EVENTS from '../events';\nimport { MediaInfo } from 'xgplayer-helper-models';\nimport EventEmitter from 'eventemitter3';\n\nvar DIRECT_EMIT_FLAG = '__TO__';\n\nvar Context = function () {\n  /**\n   *\n   * @param {*} player\n   * @param {*} configs\n   * @param {string[]}allowedEvents\n   */\n  function Context(player, configs) {\n    var allowedEvents = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n\n    _classCallCheck(this, Context);\n\n    this._emitter = new EventEmitter();\n    if (!this._emitter.off) {\n      this._emitter.off = this._emitter.removeListener;\n    }\n\n    this.mediaInfo = new MediaInfo();\n    this._instanceMap = {}; // 所有的解码流程实例\n    this._clsMap = {}; // 构造函数的map\n    this._inited = false;\n    this.allowedEvents = allowedEvents;\n    this._configs = configs;\n    this._player = player;\n    this._hooks = {}; // 注册在事件前/后的钩子，例如 before('DEMUX_COMPLETE')\n  }\n\n  /**\n   * 从上下文中获取解码流程实例，如果没有实例，构造一个\n   * @param {string} tag\n   * @returns {*}\n   */\n\n\n  _createClass(Context, [{\n    key: 'getInstance',\n    value: function getInstance(tag) {\n      var instance = this._instanceMap[tag];\n      if (instance) {\n        return instance;\n      } else {\n        // throw new Error(`${tag}实例尚未初始化`)\n        return null;\n      }\n    }\n\n    /**\n     * 初始化具体实例\n     * @param {string} tag\n     * @param {any[]}args\n     */\n\n  }, {\n    key: 'initInstance',\n    value: function initInstance(tag) {\n      for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n        args[_key - 1] = arguments[_key];\n      }\n\n      var a = args[0],\n          b = args[1],\n          c = args[2],\n          d = args[3];\n\n      if (this._clsMap[tag]) {\n        var newInstance = new this._clsMap[tag](a, b, c, d);\n        this._instanceMap[tag] = newInstance;\n        if (newInstance.init) {\n          newInstance.init(); // TODO: lifecircle\n        }\n        return newInstance;\n      } else {\n        throw new Error(tag + '\\u672A\\u5728context\\u4E2D\\u6CE8\\u518C');\n      }\n    }\n\n    /**\n     * 避免大量的initInstance调用，初始化所有的组件\n     * @param {*} config\n     */\n\n  }, {\n    key: 'init',\n    value: function init(config) {\n      if (this._inited) {\n        return;\n      }\n      for (var tag in this._clsMap) {\n        // if not inited, init an instance\n        if (this._clsMap.hasOwnProperty(tag) && !this._instanceMap[tag]) {\n          this.initInstance(tag, config);\n        }\n      }\n      this._inited = true;\n    }\n\n    /**\n     * 注册一个上下文流程，提供安全的事件发送机制\n     * @param {string} tag\n     * @param {*} cls\n     */\n\n  }, {\n    key: 'registry',\n    value: function registry(tag, cls) {\n      var _this2 = this;\n\n      var emitter = this._emitter;\n      var checkMessageName = this._isMessageNameValid.bind(this);\n      var self = this;\n      var enhanced = function (_cls) {\n        _inherits(enhanced, _cls);\n\n        function enhanced(a, b, c) {\n          _classCallCheck(this, enhanced);\n\n          var _this = _possibleConstructorReturn(this, (enhanced.__proto__ || Object.getPrototypeOf(enhanced)).call(this, a, b, c));\n\n          _this.listeners = {};\n          _this.onceListeners = {};\n          _this.TAG = tag;\n          _this._context = self;\n          return _this;\n        }\n\n        /**\n         * @param {string} messageName\n         * @param {function} callback\n         */\n\n\n        _createClass(enhanced, [{\n          key: 'on',\n          value: function on(messageName, callback) {\n            checkMessageName(messageName);\n\n            if (this.listeners[messageName]) {\n              this.listeners[messageName].push(callback);\n            } else {\n              this.listeners[messageName] = [callback];\n            }\n\n            emitter.on('' + messageName + DIRECT_EMIT_FLAG + tag, callback); // 建立定向通信监听\n            return emitter.on(messageName, callback);\n          }\n\n          /**\n           * @param {string} messageName\n           * @param {function} callback\n           */\n\n        }, {\n          key: 'before',\n          value: function before(messageName, callback) {\n            checkMessageName(messageName);\n            if (self._hooks[messageName]) {\n              self._hooks[messageName].push(callback);\n            } else {\n              self._hooks[messageName] = [callback];\n            }\n          }\n\n          /**\n           * @param {string} messageName\n           * @param {function} callback\n           */\n\n        }, {\n          key: 'once',\n          value: function once(messageName, callback) {\n            checkMessageName(messageName);\n\n            if (this.onceListeners[messageName]) {\n              this.onceListeners[messageName].push(callback);\n            } else {\n              this.onceListeners[messageName] = [callback];\n            }\n\n            emitter.once('' + messageName + DIRECT_EMIT_FLAG + tag, callback);\n            return emitter.once(messageName, callback);\n          }\n\n          /**\n           * @param {string} messageName\n           * @param {any[]} args\n           */\n\n        }, {\n          key: 'emit',\n          value: function emit(messageName) {\n            checkMessageName(messageName);\n            // console.log('emit ', messageName);\n\n            var beforeList = self._hooks ? self._hooks[messageName] : null;\n\n            for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {\n              args[_key2 - 1] = arguments[_key2];\n            }\n\n            if (beforeList) {\n              for (var i = 0, len = beforeList.length; i < len; i++) {\n                var callback = beforeList[i];\n                // eslint-disable-next-line standard/no-callback-literal\n                callback.apply(undefined, args);\n              }\n            }\n            return emitter.emit.apply(emitter, [messageName].concat(args));\n          }\n\n          /**\n           * 定向发送给某个组件单例的消息\n           * @param {string} messageName\n           * @param {any[]} args\n           */\n\n        }, {\n          key: 'emitTo',\n          value: function emitTo(tag, messageName) {\n            checkMessageName(messageName);\n\n            for (var _len3 = arguments.length, args = Array(_len3 > 2 ? _len3 - 2 : 0), _key3 = 2; _key3 < _len3; _key3++) {\n              args[_key3 - 2] = arguments[_key3];\n            }\n\n            return emitter.emit.apply(emitter, ['' + messageName + DIRECT_EMIT_FLAG + tag].concat(args));\n          }\n\n          /**\n           * 定向发送给某个组件单例的消息\n           * @param {string} messageName\n           * @param {function} callback\n           */\n\n        }, {\n          key: 'off',\n          value: function off(messageName, callback) {\n            checkMessageName(messageName);\n            return emitter.off(messageName, callback);\n          }\n        }, {\n          key: 'removeListeners',\n          value: function removeListeners() {\n            var hasOwn = Object.prototype.hasOwnProperty.bind(this.listeners);\n\n            for (var messageName in this.listeners) {\n              if (hasOwn(messageName)) {\n                var callbacks = this.listeners[messageName] || [];\n                for (var i = 0; i < callbacks.length; i++) {\n                  var callback = callbacks[i];\n                  emitter.off(messageName, callback);\n                  emitter.off('' + messageName + DIRECT_EMIT_FLAG + tag, callback);\n                }\n              }\n            }\n\n            for (var _messageName in this.onceListeners) {\n              if (hasOwn(_messageName)) {\n                var _callbacks = this.onceListeners[_messageName] || [];\n                for (var _i = 0; _i < _callbacks.length; _i++) {\n                  var _callback = _callbacks[_i];\n                  emitter.off(_messageName, _callback);\n                  emitter.off('' + _messageName + DIRECT_EMIT_FLAG + tag, _callback);\n                }\n              }\n            }\n          }\n\n          /**\n           * 在组件销毁时，默认将它注册的事件全部卸载，确保不会造成内存泄漏\n           */\n\n        }, {\n          key: 'destroy',\n          value: function destroy() {\n            // step1 unlisten events\n            this.removeListeners();\n            this.listeners = {};\n            // step2 release from context\n            delete self._instanceMap[tag];\n            if (_get(enhanced.prototype.__proto__ || Object.getPrototypeOf(enhanced.prototype), 'destroy', this)) {\n              return _get(enhanced.prototype.__proto__ || Object.getPrototypeOf(enhanced.prototype), 'destroy', this).call(this);\n            }\n            this._context = null;\n          }\n        }, {\n          key: '_player',\n          get: function get() {\n            if (!this._context) {\n              return null;\n            }\n            return this._context._player;\n          },\n          set: function set(v) {\n            if (this._context) {\n              this._context._player = v;\n            }\n          }\n        }, {\n          key: '_pluginConfig',\n          get: function get() {\n            if (!this._context) {\n              return null;\n            }\n            return this._context._configs;\n          }\n        }]);\n\n        return enhanced;\n      }(cls);\n      this._clsMap[tag] = enhanced;\n\n      /**\n       * get instance immediately\n       * e.g const instance = context.registry(tag, Cls)(config)\n       * */\n      return function () {\n        for (var _len4 = arguments.length, args = Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n          args[_key4] = arguments[_key4];\n        }\n\n        return _this2.initInstance.apply(_this2, [tag].concat(args));\n      };\n    }\n\n    /**\n     * 各个模块处理seek\n     * @param {number} time\n     */\n\n  }, {\n    key: 'seek',\n    value: function seek(time) {\n      this._emitter.emit(EVENTS.PLAYER_EVENTS.SEEK, time);\n    }\n\n    /**\n     * 对存在的实例进行\n     */\n\n  }, {\n    key: 'destroyInstances',\n    value: function destroyInstances() {\n      var _this3 = this;\n\n      Object.keys(this._instanceMap).forEach(function (tag) {\n        if (_this3._instanceMap[tag].destroy) {\n          _this3._instanceMap[tag].destroy();\n        }\n      });\n    }\n\n    /**\n     * 编解码流程无需关注事件的解绑\n     */\n\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this.destroyInstances();\n      if (this._emitter) {\n        this._emitter.removeAllListeners();\n      }\n      this._emitter = null;\n      this.allowedEvents = [];\n      this._clsMap = null;\n      this._hooks = null;\n      this._player = null;\n      this._configs = null;\n    }\n\n    /**\n     * 对信道进行收拢\n     * @param {string} messageName\n     * @private\n     */\n\n  }, {\n    key: '_isMessageNameValid',\n    value: function _isMessageNameValid(messageName) {\n      if (!this.allowedEvents.indexOf(messageName) < 0) {\n        throw new Error('unregistered message name: ' + messageName);\n      }\n    }\n  }]);\n\n  return Context;\n}();\n\nexport default Context;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport EVENTS from '../events';\n\nvar CRYPTO_EVENTS = EVENTS.CRYPTO_EVENTS;\n\nvar Crypto = function () {\n  function Crypto(config) {\n    _classCallCheck(this, Crypto);\n\n    this.inputBuffer = config.inputbuffer;\n    this.outputBuffer = config.outputbuffer;\n    this.key = config.key;\n    this.iv = config.iv;\n    this.method = config.method;\n\n    this.crypto = window.crypto || window.msCrypto;\n  }\n\n  _createClass(Crypto, [{\n    key: 'init',\n    value: function init() {\n      this.on(CRYPTO_EVENTS.START_DECRYPTO, this.decrypto.bind(this));\n    }\n  }, {\n    key: 'decrypto',\n    value: function decrypto() {\n      var _this = this;\n\n      if (!this.aeskey) {\n        var sbkey = this.crypto.subtle.importKey('raw', this.key.buffer, { name: 'AES-CBC' }, false, ['encrypt', 'decrypt']);\n        sbkey.then(function (key) {\n          _this.aeskey = key;\n          _this.decryptoData();\n        });\n      } else {\n        this.decryptoData();\n      }\n    }\n  }, {\n    key: 'decryptoData',\n    value: function decryptoData() {\n      var _this2 = this;\n\n      var inputbuffer = this._context.getInstance(this.inputBuffer);\n      var outputbuffer = this._context.getInstance(this.outputBuffer);\n      var data = inputbuffer.shift();\n      if (data) {\n        this.crypto.subtle.decrypt({ name: 'AES-CBC', iv: this.iv.buffer }, this.aeskey, data).then(function (res) {\n          outputbuffer.push(new Uint8Array(res));\n          _this2.emit(CRYPTO_EVENTS.DECRYPTED);\n          _this2.decryptoData(data);\n        });\n      }\n    }\n  }]);\n\n  return Crypto;\n}();\n\nexport default Crypto;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport EVENTS from '../events';\n\nvar MSE_EVENTS = EVENTS.MSE_EVENTS;\n\nvar MSE = function () {\n  function MSE(configs, context) {\n    _classCallCheck(this, MSE);\n\n    if (context) {\n      this._context = context;\n      this.emit = context._emitter.emit.bind(context._emitter);\n    }\n\n    this.TAG = 'MSE';\n\n    this.configs = Object.assign({}, configs);\n    this.container = this.configs.container;\n    this.format = this.configs.format; // hls | flv\n    this.mediaSource = null;\n    this.sourceBuffers = {};\n    this.preloadTime = this.configs.preloadTime || 1;\n    this.onSourceOpen = this.onSourceOpen.bind(this);\n    this.onTimeUpdate = this.onTimeUpdate.bind(this);\n    this.onUpdateEnd = this.onUpdateEnd.bind(this);\n    this.onWaiting = this.onWaiting.bind(this);\n    this.opened = false;\n  }\n\n  _createClass(MSE, [{\n    key: 'init',\n    value: function init() {\n      // eslint-disable-next-line no-undef\n      this.mediaSource = new self.MediaSource();\n      this.mediaSource.addEventListener('sourceopen', this.onSourceOpen);\n      this._url = null;\n      this.container.addEventListener('timeupdate', this.onTimeUpdate);\n      this.container.addEventListener('waiting', this.onWaiting);\n    }\n  }, {\n    key: 'resetContext',\n    value: function resetContext(newCtx, keepBuffer) {\n      this._context = newCtx;\n      this.emit = newCtx._emitter.emit.bind(newCtx._emitter);\n      if (!keepBuffer) {\n        for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n          var buffer = this.sourceBuffers[Object.keys(this.sourceBuffers)[i]];\n          if (!buffer.updating) {\n            MSE.clearBuffer(buffer);\n          }\n        }\n      }\n    }\n  }, {\n    key: 'onTimeUpdate',\n    value: function onTimeUpdate() {\n      this.emit('TIME_UPDATE', this.container);\n    }\n  }, {\n    key: 'onWaiting',\n    value: function onWaiting() {\n      this.emit('WAITING', this.container);\n    }\n  }, {\n    key: 'onSourceOpen',\n    value: function onSourceOpen() {\n      this.opened = true;\n      this.addSourceBuffers();\n    }\n  }, {\n    key: 'onUpdateEnd',\n    value: function onUpdateEnd() {\n      this.emit(MSE_EVENTS.SOURCE_UPDATE_END);\n      this.doAppend();\n    }\n  }, {\n    key: 'addSourceBuffers',\n    value: function addSourceBuffers() {\n      if (!this.mediaSource || this.mediaSource.readyState !== 'open' || !this.opened) {\n        return;\n      }\n      var sources = this._context.getInstance('PRE_SOURCE_BUFFER');\n      var tracks = this._context.getInstance('TRACKS');\n      var track = void 0;\n      if (!sources || !tracks) {\n        return;\n      }\n\n      sources = sources.sources;\n      var add = false;\n      for (var i = 0, k = Object.keys(sources).length; i < k; i++) {\n        var type = Object.keys(sources)[i];\n        add = false;\n        if (type === 'audio') {\n          track = tracks.audioTrack;\n        } else if (type === 'video') {\n          track = tracks.videoTrack;\n          // return;\n        }\n        if (track && sources[type].init !== null && sources[type].data.length) {\n          add = true;\n        }\n      }\n\n      if (add) {\n        if (Object.keys(this.sourceBuffers).length > 1) {\n          return;\n        }\n        for (var _i = 0, _k = Object.keys(sources).length; _i < _k; _i++) {\n          var _type = Object.keys(sources)[_i];\n          if (this.sourceBuffers[_type]) {\n            continue;\n          }\n          var source = sources[_type];\n          var mime = _type === 'video' ? 'video/mp4;codecs=' + source.mimetype : 'audio/mp4;codecs=' + source.mimetype;\n\n          try {\n            // console.log('add sourcebuffer', mime);\n            var sourceBuffer = this.mediaSource.addSourceBuffer(mime);\n            this.sourceBuffers[_type] = sourceBuffer;\n            sourceBuffer.addEventListener('updateend', this.onUpdateEnd);\n          } catch (e) {\n            if (e.code === 22 && Object.keys(this.sourceBuffers).length > 0) {\n              return this.emit(MSE_EVENTS.MSE_WRONG_TRACK_ADD, _type);\n            }\n            this.emit(MSE_EVENTS.MSE_ERROR, this.TAG, new Error(e.message));\n          }\n        }\n        if (Object.keys(this.sourceBuffers).length === this.sourceBufferLen) {\n          this.doAppend();\n        }\n      }\n    }\n  }, {\n    key: 'doAppend',\n    value: function doAppend() {\n      if (!this.mediaSource || this.mediaSource.readyState === 'closed') return;\n      this._doCleanupSourceBuffer();\n      var sources = this._context.getInstance('PRE_SOURCE_BUFFER');\n      if (!sources) return;\n      if (Object.keys(this.sourceBuffers).length < this.sourceBufferLen) {\n        return;\n      }\n      for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n        var type = Object.keys(this.sourceBuffers)[i];\n        var sourceBuffer = this.sourceBuffers[type];\n        if (sourceBuffer.updating) continue;\n        var source = sources.sources[type];\n        if (this['no' + type]) {\n          source.data = [];\n          source.init.buffer = null;\n          continue;\n        }\n        if (source && !source.inited) {\n          try {\n            // console.log('append init buffer: ', type)\n            sourceBuffer.appendBuffer(source.init.buffer.buffer);\n            source.inited = true;\n          } catch (e) {\n            // DO NOTHING\n          }\n        } else if (source) {\n          var data = source.data.shift();\n          if (data) {\n            try {\n              // console.log('append buffer: ', type);\n              sourceBuffer.appendBuffer(data.buffer.buffer);\n            } catch (e) {\n              source.data.unshift(data);\n            }\n          }\n        }\n      }\n    }\n  }, {\n    key: 'endOfStream',\n    value: function endOfStream() {\n      try {\n        var readyState = this.mediaSource.readyState;\n\n        if (readyState === 'open') {\n          this.mediaSource.endOfStream();\n        }\n      } catch (e) {}\n    }\n  }, {\n    key: 'remove',\n    value: function remove(end) {\n      var start = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n\n      try {\n        for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n          var buffer = this.sourceBuffers[Object.keys(this.sourceBuffers)[i]];\n          if (!buffer.updating) {\n            if (end > start) {\n              buffer.remove(start, end);\n            }\n          }\n        }\n      } catch (e) {}\n    }\n  }, {\n    key: '_doCleanupSourceBuffer',\n    value: function _doCleanupSourceBuffer() {\n      var currentTime = this.container.currentTime;\n      var autoCleanupMinBackwardDuration = 60 * 3;\n      var _pendingRemoveRanges = {\n        video: [],\n        audio: []\n      };\n      for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n        var type = Object.keys(this.sourceBuffers)[i];\n        var sourceBuffer = this.sourceBuffers[type];\n        var buffered = sourceBuffer.buffered;\n        var doRemove = false;\n        for (var j = 0; j < buffered.length; j++) {\n          var start = buffered.start(j);\n          var end = buffered.end(j);\n          if (start <= currentTime && currentTime < end + 3) {\n            if (currentTime - start >= autoCleanupMinBackwardDuration) {\n              doRemove = true;\n              var removeEnd = currentTime - autoCleanupMinBackwardDuration;\n              _pendingRemoveRanges[type].push({ start: start, end: removeEnd });\n            }\n          } else if (end < currentTime && currentTime - start >= autoCleanupMinBackwardDuration) {\n            doRemove = true;\n            _pendingRemoveRanges[type].push({ start: start, end: end });\n          }\n        }\n        if (doRemove && !sourceBuffer.updating) {\n          this._doRemoveRanges(_pendingRemoveRanges);\n        }\n      }\n    }\n  }, {\n    key: '_doRemoveRanges',\n    value: function _doRemoveRanges(_pendingRemoveRanges) {\n      for (var type in _pendingRemoveRanges) {\n        if (!this.sourceBuffers[type] || this.sourceBuffers[type].updating) {\n          continue;\n        }\n        var sb = this.sourceBuffers[type];\n        var ranges = _pendingRemoveRanges[type];\n        while (ranges.length && !sb.updating) {\n          var range = ranges.shift();\n          try {\n            if (range && range.end > range.start) {\n              sb.remove(range.start, range.end);\n            }\n          } catch (e) {}\n        }\n      }\n    }\n  }, {\n    key: 'cleanBuffers',\n    value: function cleanBuffers() {\n      var _this = this;\n\n      var taskList = [];\n\n      var _loop = function _loop(i) {\n        var buffer = _this.sourceBuffers[Object.keys(_this.sourceBuffers)[i]];\n\n        var task = void 0;\n        if (buffer.updating) {\n          task = new Promise(function (resolve) {\n            var doCleanBuffer = function doCleanBuffer() {\n              var retryTime = 3;\n\n              var clean = function clean() {\n                if (!buffer.updating) {\n                  MSE.clearBuffer(buffer);\n                  buffer.addEventListener('updateend', function () {\n                    resolve();\n                  });\n                } else if (retryTime > 0) {\n                  setTimeout(clean, 200);\n                  retryTime--;\n                } else {\n                  resolve();\n                }\n              };\n\n              setTimeout(clean, 200);\n              buffer.removeEventListener('updateend', doCleanBuffer);\n            };\n            buffer.addEventListener('updateend', doCleanBuffer);\n          });\n        } else {\n          task = new Promise(function (resolve) {\n            MSE.clearBuffer(buffer);\n            buffer.addEventListener('updateend', function () {\n              resolve();\n            });\n          });\n\n          // task = Promise.resolve()\n        }\n\n        taskList.push(task);\n      };\n\n      for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n        _loop(i);\n      }\n\n      return Promise.all(taskList);\n    }\n  }, {\n    key: 'removeBuffers',\n    value: function removeBuffers() {\n      var _this2 = this;\n\n      var taskList = [];\n\n      var _loop2 = function _loop2(i) {\n        var buffer = _this2.sourceBuffers[Object.keys(_this2.sourceBuffers)[i]];\n        buffer.removeEventListener('updateend', _this2.onUpdateEnd);\n\n        var task = void 0;\n        if (buffer.updating) {\n          task = new Promise(function (resolve) {\n            var doCleanBuffer = function doCleanBuffer() {\n              var retryTime = 3;\n\n              var clean = function clean() {\n                if (!buffer.updating) {\n                  MSE.clearBuffer(buffer);\n                  buffer.addEventListener('updateend', function () {\n                    resolve();\n                  });\n                } else if (retryTime > 0) {\n                  setTimeout(clean, 200);\n                  retryTime--;\n                } else {\n                  resolve();\n                }\n              };\n\n              setTimeout(clean, 200);\n              buffer.removeEventListener('updateend', doCleanBuffer);\n            };\n            buffer.addEventListener('updateend', doCleanBuffer);\n          });\n        } else {\n          task = new Promise(function (resolve) {\n            MSE.clearBuffer(buffer);\n            buffer.addEventListener('updateend', function () {\n              resolve();\n            });\n          });\n\n          // task = Promise.resolve()\n        }\n\n        taskList.push(task);\n      };\n\n      for (var i = 0; i < Object.keys(this.sourceBuffers).length; i++) {\n        _loop2(i);\n      }\n\n      return Promise.all(taskList);\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      var _this3 = this;\n\n      if (!this.container) return Promise.resolve();\n      this.container.removeEventListener('timeupdate', this.onTimeUpdate);\n      this.container.removeEventListener('waiting', this.onWaiting);\n      this.mediaSource.removeEventListener('sourceopen', this.onSourceOpen);\n      return this.removeBuffers().then(function () {\n        var sources = Object.keys(_this3.sourceBuffers);\n        for (var i = 0; i < sources.length; i++) {\n          var _buffer = _this3.sourceBuffers[sources[i]];\n          delete _this3.sourceBuffers[sources[i]];\n\n          if (_this3.mediaSource.readyState === 'open') {\n            _this3.mediaSource.removeSourceBuffer(_buffer);\n          }\n        }\n\n        _this3.endOfStream();\n        try {\n          window.URL.revokeObjectURL(_this3.url);\n        } catch (e) {}\n\n        _this3.url = null;\n        _this3.configs = {};\n        _this3.container = null;\n        _this3.mediaSource = null;\n        _this3.sourceBuffers = {};\n        _this3.preloadTime = 1;\n\n        _this3.onSourceOpen = null;\n        _this3.onTimeUpdate = null;\n        _this3.onUpdateEnd = null;\n        _this3.onWaiting = null;\n        _this3.noaudio = undefined;\n        _this3.novideo = undefined;\n      });\n    }\n  }, {\n    key: 'sourceBufferLen',\n    get: function get() {\n      if (!this._context.mediaInfo) {\n        if (this.noaudio || this.novideo) return 1;\n        return 2;\n      }\n      return (!!this._context.mediaInfo.hasVideo && !this.novideo) + (!!this._context.mediaInfo.hasAudio && !this.noaudio);\n    }\n  }, {\n    key: 'url',\n    set: function set(val) {\n      this._url = val;\n    },\n    get: function get() {\n      if (!this._url) {\n        try {\n          this._url = window.URL.createObjectURL(this.mediaSource);\n        } catch (e) {}\n      }\n      return this._url;\n    }\n  }], [{\n    key: 'clearBuffer',\n    value: function clearBuffer(buffer) {\n      try {\n        var buffered = buffer.buffered;\n        var bEnd = 0.1;\n        for (var i = 0, len = buffered.length; i < len; i++) {\n          bEnd = buffered.end(i);\n        }\n        buffer.remove(0, bEnd);\n      } catch (e) {\n        // DO NOTHING\n      }\n    }\n  }]);\n\n  return MSE;\n}();\n\nexport default MSE;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Speed = function () {\n  function Speed() {\n    _classCallCheck(this, Speed);\n\n    // milliseconds\n    this._firstCheckpoint = 0;\n    this._lastCheckpoint = 0;\n    this._intervalBytes = 0;\n    this._lastSamplingBytes = 0;\n\n    this._now = Date.now;\n  }\n\n  _createClass(Speed, [{\n    key: \"reset\",\n    value: function reset() {\n      this._firstCheckpoint = this._lastCheckpoint = 0;\n      this._intervalBytes = 0;\n      this._lastSamplingBytes = 0;\n    }\n  }, {\n    key: \"addBytes\",\n    value: function addBytes(bytes) {\n      var duration = this._now() - this._lastCheckpoint;\n      if (this._firstCheckpoint === 0) {\n        this._firstCheckpoint = this._now();\n        this._lastCheckpoint = this._firstCheckpoint;\n        this._intervalBytes += bytes;\n      } else if (duration < 5000) {\n        this._intervalBytes += bytes;\n      } else {\n        // duration >= 1000\n        this._lastSamplingBytes = this._intervalBytes / (duration / 1000);\n        this._intervalBytes = bytes;\n        this._lastCheckpoint = this._now();\n      }\n    }\n  }, {\n    key: \"currentKBps\",\n    get: function get() {\n      this.addBytes(0);\n\n      var durationSeconds = (this._now() - this._lastCheckpoint) / 1000;\n      if (durationSeconds === 0) durationSeconds = 1;\n      return this._intervalBytes / durationSeconds / 1024;\n    }\n  }, {\n    key: \"lastSamplingKBps\",\n    get: function get() {\n      this.addBytes(0);\n\n      if (this._lastSamplingBytes !== 0) {\n        return this._lastSamplingBytes / 1024;\n      } else {\n        // lastSecondBytes === 0\n        if (this._now() - this._lastCheckpoint >= 500) {\n          // if time interval since last checkpoint has exceeded 500ms\n          // the speed is nearly accurate\n          return this.currentKBps;\n        } else {\n          // We don't know\n          return 0;\n        }\n      }\n    }\n  }]);\n\n  return Speed;\n}();\n\nexport default Speed;","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport EVENTS from '../events';\nimport Speed from './speed';\n\nvar LOADER_EVENTS = EVENTS.LOADER_EVENTS;\nvar READ_STREAM = 0;\nvar READ_TEXT = 1;\nvar READ_JSON = 2;\nvar READ_BUFFER = 3;\n\nvar FetchLoader = function () {\n  function FetchLoader(configs) {\n    _classCallCheck(this, FetchLoader);\n\n    this.configs = Object.assign({}, configs);\n    this.url = null;\n    this.status = 0;\n    this.error = null;\n    this._reader = null;\n    this._canceled = false;\n    this._destroyed = false;\n    this.readtype = this.configs.readtype;\n    this.buffer = this.configs.buffer || 'LOADER_BUFFER';\n    this._loaderTaskNo = 0;\n    this._ttfb = 0;\n    this._speed = new Speed();\n    if (window.AbortController) {\n      this.abortControllerEnabled = true;\n    }\n  }\n\n  _createClass(FetchLoader, [{\n    key: 'init',\n    value: function init() {\n      this.on(LOADER_EVENTS.LADER_START, this.load.bind(this));\n    }\n  }, {\n    key: 'fetch',\n\n\n    /**\n     * @param {string}      url\n     * @param {RequestInit} params\n     * @param {number}      timeout\n     * @return {Promise<unknown>}\n     */\n    value: function (_fetch) {\n      function fetch(_x, _x2, _x3) {\n        return _fetch.apply(this, arguments);\n      }\n\n      fetch.toString = function () {\n        return _fetch.toString();\n      };\n\n      return fetch;\n    }(function (url, params, timeout) {\n      var _this2 = this;\n\n      var timer = null;\n      if (this.abortControllerEnabled) {\n        this.abortController = new window.AbortController();\n      }\n      Object.assign(params, { signal: this.abortController ? this.abortController.signal : undefined });\n      var start = new Date().getTime();\n      return Promise.race([fetch(url, params), new Promise(function (resolve, reject) {\n        timer = setTimeout(function () {\n          /* eslint-disable-next-line */\n          reject({\n            code: 999,\n            message: 'fetch timeout'\n          });\n          if (_this2.abortController) {\n            _this2.abortController.abort();\n          }\n        }, timeout || 1e4); // 10s\n      })]).then(function (response) {\n        if (timer) {\n          clearTimeout(timer);\n          timer = null;\n        }\n        var end = new Date().getTime();\n        _this2.emit(LOADER_EVENTS.LOADER_TTFB, {\n          start: start,\n          end: end,\n          elapsed: end - start\n        });\n        return response;\n      });\n    })\n\n    /**\n     * @param {string}      url\n     * @param {RequestInit} params\n     * @param {number}      retryTimes\n     * @param {number}      totalRetry\n     * @param {number}      delayTime\n     * @return {Promise<{ok}>}\n     */\n\n  }, {\n    key: 'internalLoad',\n    value: function internalLoad(url, params, retryTimes, totalRetry) {\n      var _this3 = this;\n\n      var delayTime = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;\n      var loadTimeout = arguments[5];\n\n      if (this._destroyed) return;\n      this.loading = true;\n      return this.fetch(this.url, params, loadTimeout).then(function (response) {\n        !_this3._destroyed && _this3.emit(LOADER_EVENTS.LOADER_RESPONSE_HEADERS, _this3.TAG, response.headers);\n\n        if (response.ok) {\n          _this3.status = response.status;\n          Promise.resolve().then(function () {\n            _this3._onFetchResponse(response);\n          });\n\n          return Promise.resolve(response);\n        }\n\n        if (retryTimes-- > 0) {\n          _this3._retryTimer = setTimeout(function () {\n            _this3.emit(LOADER_EVENTS.LOADER_RETRY, _this3.TAG, {\n              response: response,\n              reason: 'response not ok',\n              retryTime: totalRetry - retryTimes\n            });\n            return _this3.internalLoad(url, params, retryTimes, totalRetry, delayTime, loadTimeout);\n          }, delayTime);\n        } else {\n          _this3.loading = false;\n          _this3.emit(LOADER_EVENTS.LOADER_ERROR, _this3.TAG, {\n            code: response.status || 21,\n            message: response.status + ' (' + response.statusText + ')'\n          });\n        }\n      }).catch(function (error) {\n        if (_this3._destroyed) {\n          _this3.loading = false;\n          return;\n        }\n\n        if (retryTimes-- > 0) {\n          _this3._retryTimer = setTimeout(function () {\n            _this3.emit(LOADER_EVENTS.LOADER_RETRY, _this3.TAG, {\n              error: error,\n              reason: 'fetch error',\n              retryTime: totalRetry - retryTimes\n            });\n            return _this3.internalLoad(url, params, retryTimes, totalRetry, delayTime, loadTimeout);\n          }, delayTime);\n        } else {\n          _this3.loading = false;\n          if (error && error.name === 'AbortError') {\n            return;\n          }\n          _this3.emit(LOADER_EVENTS.LOADER_ERROR, _this3.TAG, Object.assign({ code: 21 }, error));\n        }\n      });\n    }\n\n    /**\n     * @param {string}      url\n     * @param {RequestInit} opts\n     * @param {retryCount, retryDelay, loadTimeout}  pluginConfig\n     * @return {Promise<{ok}>}\n     */\n\n  }, {\n    key: 'load',\n    value: function load(url) {\n      var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},\n          retryCount = _ref.retryCount,\n          retryDelay = _ref.retryDelay,\n          loadTimeout = _ref.loadTimeout;\n\n      retryCount = retryCount === undefined ? 3 : retryCount;\n      this.url = url;\n      this._canceled = false;\n\n      // TODO: Add Ranges\n      var params = this.getParams(opts);\n\n      return this.internalLoad(url, params, retryCount, retryCount, retryDelay, loadTimeout);\n    }\n  }, {\n    key: '_onFetchResponse',\n    value: function _onFetchResponse(response) {\n      var _this4 = this;\n\n      var _this = this;\n      var buffer = this._context.getInstance(this.buffer);\n      this._loaderTaskNo++;\n      var taskno = this._loaderTaskNo;\n      if (response.ok === true) {\n        switch (this.readtype) {\n          case READ_JSON:\n            response.json().then(function (data) {\n              _this.loading = false;\n              if (!_this._canceled && !_this._destroyed) {\n                if (buffer) {\n                  buffer.push(data);\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, buffer);\n                } else {\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, data);\n                }\n              }\n            });\n            break;\n          case READ_TEXT:\n            response.text().then(function (data) {\n              _this.loading = false;\n              if (!_this._canceled && !_this._destroyed) {\n                if (buffer) {\n                  buffer.push(data);\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, buffer);\n                } else {\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, data);\n                }\n              }\n            });\n            break;\n          case READ_BUFFER:\n            response.arrayBuffer().then(function (data) {\n              _this.loading = false;\n              if (!_this._canceled && !_this._destroyed) {\n                if (buffer) {\n                  buffer.push(new Uint8Array(data));\n                  _this4._speed.addBytes(data.byteLength);\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, buffer);\n                } else {\n                  _this.emit(LOADER_EVENTS.LOADER_COMPLETE, data);\n                }\n              }\n            }).catch(function () {});\n            break;\n          case READ_STREAM:\n          default:\n            return this._onReader(response.body.getReader(), taskno);\n        }\n      }\n    }\n  }, {\n    key: '_onReader',\n    value: function _onReader(reader, taskno) {\n      var _this5 = this;\n\n      var buffer = this._context.getInstance(this.buffer);\n      if (!buffer && this._reader || this._destroyed) {\n        try {\n          this._reader.cancel();\n        } catch (e) {\n          // DO NOTHING\n        }\n      }\n\n      this._reader = reader;\n      if (this.loading === false) {\n        return;\n      }\n\n      // reader read function returns a Promise. get data when callback and has value.done when disconnected.\n      // read方法返回一个Promise. 回调中可以获取到数据。当value.done存在时，说明链接断开。\n      this._noDataTimer = setTimeout(function () {\n        if (_this5.loading === false) return;\n        _this5.emit(LOADER_EVENTS.LOADER_COMPLETE);\n      }, 3000);\n      this._reader && this._reader.read().then(function (val) {\n        clearTimeout(_this5._noDataTimer);\n        if (_this5._canceled || _this5._destroyed) {\n          if (_this5._reader) {\n            try {\n              _this5._reader.cancel();\n            } catch (e) {\n              // DO NOTHING\n            }\n          }\n          return;\n        }\n        if (val.done) {\n          _this5.loading = false;\n          _this5.status = 0;\n          Promise.resolve().then(function () {\n            _this5.emit(LOADER_EVENTS.LOADER_COMPLETE, buffer);\n          });\n          return;\n        }\n\n        buffer.push(val.value);\n        _this5._speed.addBytes(val.value.byteLength);\n        Promise.resolve().then(function () {\n          _this5.emit(LOADER_EVENTS.LOADER_DATALOADED, buffer);\n        });\n        return _this5._onReader(reader, taskno);\n      }).catch(function (error) {\n        clearTimeout(_this5._noDataTimer);\n        _this5.loading = false;\n        if (error && error.name === 'AbortError') return;\n        _this5.emit(LOADER_EVENTS.LOADER_ERROR, _this5.TAG, error);\n      });\n    }\n\n    /**\n     *\n     * @param {RequestInit} opts\n     * @return {{mode: string, headers: Headers, cache: string, method: string}}\n     */\n\n  }, {\n    key: 'getParams',\n    value: function getParams(opts) {\n      var options = Object.assign({}, opts);\n      var headers = new Headers();\n\n      var params = {\n        method: 'GET',\n        headers: headers,\n        mode: 'cors',\n        cache: 'default'\n\n        // add custmor headers\n        // 添加自定义头\n      };if (_typeof(this.configs.headers) === 'object') {\n        var configHeaders = this.configs.headers;\n        for (var key in configHeaders) {\n          if (configHeaders.hasOwnProperty(key)) {\n            headers.append(key, configHeaders[key]);\n          }\n        }\n      }\n\n      if (_typeof(options.headers) === 'object') {\n        var optHeaders = options.headers;\n        for (var _key in optHeaders) {\n          if (optHeaders.hasOwnProperty(_key)) {\n            headers.append(_key, optHeaders[_key]);\n          }\n        }\n      }\n\n      if (options.cors === false) {\n        params.mode = 'same-origin';\n      }\n\n      // withCredentials is disabled by default\n      // withCredentials 在默认情况下不被使用。\n      if (options.withCredentials) {\n        params.credentials = 'include';\n      }\n\n      // TODO: Add ranges;\n      return params;\n    }\n\n    // in KB/s\n\n  }, {\n    key: 'cancel',\n    value: function cancel() {\n      if (this._reader) {\n        try {\n          this._reader.cancel();\n        } catch (e) {\n          // 防止failed: 200错误被打印到控制台上\n        }\n        this._reader = null;\n        this.loading = false;\n      }\n      clearTimeout(this._noDataTimer);\n      this._canceled = true;\n      if (this.abortController) {\n        this.abortController.abort();\n      }\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this._destroyed = true;\n      clearTimeout(this._retryTimer);\n      clearTimeout(this._noDataTimer);\n      this.cancel();\n      this._speed.reset();\n    }\n  }, {\n    key: 'currentSpeed',\n    get: function get() {\n      return this._speed.lastSamplingKBps;\n    }\n  }], [{\n    key: 'isSupported',\n    value: function isSupported() {\n      return !!window.fetch;\n    }\n  }, {\n    key: 'type',\n    get: function get() {\n      return 'loader';\n    }\n  }]);\n\n  return FetchLoader;\n}();\n\nexport default FetchLoader;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar DevLogger = function () {\n  function DevLogger() {\n    var _this = this;\n\n    _classCallCheck(this, DevLogger);\n\n    try {\n      var matched = /xgd=(\\d)/.exec(document.cookie);\n      this._status = !!matched;\n      this._level = matched && matched[1];\n    } catch (e) {\n      this._status = false;\n    }\n\n    ['group', 'groupEnd', 'log', 'warn', 'error'].forEach(function (funName) {\n      _this[funName] = function (arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10) {\n        var _console;\n\n        if (!_this._status) return;\n        var tagName = arg1;\n        var args = [arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10].filter(function (x) {\n          return x !== undefined;\n        });\n        (_console = console)[funName].apply(_console, ['[' + tagName + ']:'].concat(_toConsumableArray(args)));\n      };\n    });\n  }\n\n  /**\n   * @return {*|boolean|boolean}\n   */\n\n\n  _createClass(DevLogger, [{\n    key: 'enable',\n    get: function get() {\n      return this._status;\n    }\n\n    /**\n     * @return {boolean}\n     */\n\n  }, {\n    key: 'long',\n    get: function get() {\n      return this._level === '2';\n    }\n  }]);\n\n  return DevLogger;\n}();\n\nexport default new DevLogger();","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS, FetchLoader, Crypto } from 'xgplayer-helper-utils';\n\nimport Player from 'xgplayer';\n\nvar LOADER_EVENTS = EVENTS.LOADER_EVENTS;\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\nvar DEMUX_EVENTS = EVENTS.DEMUX_EVENTS;\nvar HLS_EVENTS = EVENTS.HLS_EVENTS;\nvar CRYTO_EVENTS = EVENTS.CRYTO_EVENTS;\nvar MSE_EVENTS = EVENTS.MSE_EVENTS;\nvar HLS_ERROR = 'HLS_ERROR';\n\nvar MASTER_PLAYLIST_REGEX = /#EXT-X-STREAM-INF:([^\\n\\r]*)[\\r\\n]+([^\\r\\n]+)/g;\n\nvar HlsLiveController = function () {\n  function HlsLiveController(configs) {\n    _classCallCheck(this, HlsLiveController);\n\n    this.configs = Object.assign({}, configs);\n    this.url = '';\n    this.sequence = 0;\n    this._playlist = null;\n    this.retrytimes = this.configs.retrytimes || 3;\n    this.preloadTime = this.configs.preloadTime;\n    this.container = this.configs.container;\n    this._m3u8lasttime = 0;\n    this._timmer = setInterval(this._checkStatus.bind(this), 300);\n    this._lastCheck = 0;\n    this.m3u8Text = null;\n  }\n\n  _createClass(HlsLiveController, [{\n    key: 'init',\n    value: function init() {\n      // 初始化Buffer （M3U8/TS/Playlist);\n      var _player$hlsOps = this._player.hlsOps,\n          XgBuffer = _player$hlsOps.XgBuffer,\n          Tracks = _player$hlsOps.Tracks,\n          Playlist = _player$hlsOps.Playlist,\n          RemuxedBufferManager = _player$hlsOps.RemuxedBufferManager,\n          Compatibility = _player$hlsOps.Compatibility,\n          FetchLoader = _player$hlsOps.FetchLoader,\n          TsDemuxer = _player$hlsOps.TsDemuxer,\n          Mp4Remuxer = _player$hlsOps.Mp4Remuxer,\n          Mse = _player$hlsOps.Mse;\n\n      this._context.registry('M3U8_BUFFER', XgBuffer);\n      this._context.registry('TS_BUFFER', XgBuffer);\n      this._context.registry('TRACKS', Tracks);\n\n      this._playlist = this._context.registry('PLAYLIST', Playlist)({ autoclear: true });\n      this._context.registry('PRE_SOURCE_BUFFER', RemuxedBufferManager);\n\n      this._context.registry('COMPATIBILITY', Compatibility);\n\n      // 初始化M3U8Loader;\n      this._m3u8loader = this._context.registry('M3U8_LOADER', FetchLoader)({ buffer: 'M3U8_BUFFER', readtype: 1 });\n      this._tsloader = this._context.registry('TS_LOADER', FetchLoader)({ buffer: 'TS_BUFFER', readtype: 3 });\n\n      // 初始化TS Demuxer\n      this._context.registry('TS_DEMUXER', TsDemuxer)({ inputbuffer: 'TS_BUFFER' });\n\n      // 初始化MP4 Remuxer\n      this._context.registry('MP4_REMUXER', Mp4Remuxer);\n\n      // 初始化MSE\n      this.mse = this._context.registry('MSE', Mse)({ container: this.container });\n      this.initEvents();\n    }\n  }, {\n    key: 'initEvents',\n    value: function initEvents() {\n      this.on(LOADER_EVENTS.LOADER_COMPLETE, this._onLoadComplete.bind(this));\n      this.on(LOADER_EVENTS.LOADER_RETRY, this._handleFetchRetry.bind(this));\n\n      this.on(REMUX_EVENTS.INIT_SEGMENT, this.mse.addSourceBuffers.bind(this.mse));\n\n      this.on(REMUX_EVENTS.MEDIA_SEGMENT, this.mse.doAppend.bind(this.mse));\n\n      this.on(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed.bind(this));\n\n      this.on(DEMUX_EVENTS.SEI_PARSED, this._handleSEIParsed.bind(this));\n\n      this.on(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete.bind(this));\n\n      this.on(LOADER_EVENTS.LOADER_ERROR, this._onLoadError.bind(this));\n\n      this.on(DEMUX_EVENTS.DEMUX_ERROR, this._onDemuxError.bind(this));\n\n      this.on(REMUX_EVENTS.REMUX_ERROR, this._onRemuxError.bind(this));\n\n      this.on(MSE_EVENTS.MSE_ERROR, this._handleMseError.bind(this));\n    }\n  }, {\n    key: '_onError',\n    value: function _onError(type, mod, err, fatal) {\n      var error = {\n        code: err.code,\n        errorType: type,\n        errorDetails: '[' + mod + ']: ' + (err ? err.message : ''),\n        errorFatal: fatal\n      };\n      this._player.emit(HLS_ERROR, error);\n    }\n  }, {\n    key: '_onDemuxComplete',\n    value: function _onDemuxComplete() {\n      this.emit(REMUX_EVENTS.REMUX_MEDIA, 'ts');\n    }\n  }, {\n    key: '_onMetadataParsed',\n    value: function _onMetadataParsed(type) {\n      if (type === 'video') {\n        this._context.mediaInfo.hasVideo = true;\n      }\n      if (type === 'audio') {\n        this._context.mediaInfo.hasAudio = true;\n      }\n      this.emit(REMUX_EVENTS.REMUX_METADATA, type);\n    }\n  }, {\n    key: '_onLoadError',\n    value: function _onLoadError(loader, error) {\n      if (!this._tsloader.loading && !this._m3u8loader.loading && this.retrytimes >= 1) {\n        this.retrytimes--;\n        this._onError(LOADER_EVENTS.LOADER_ERROR, loader, error, false);\n      } else if (this.retrytimes <= 1) {\n        this._player.emit('error', {\n          code: error.code,\n          errorType: 'network',\n          ex: '[' + loader + ']: ' + error.message,\n          errd: {}\n        });\n        this._onError(LOADER_EVENTS.LOADER_ERROR, loader, error, true);\n        this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n        this.mse.endOfStream();\n      }\n    }\n  }, {\n    key: '_onDemuxError',\n    value: function _onDemuxError(mod, error, fatal) {\n      if (fatal === undefined) {\n        fatal = true;\n      }\n      this._player.emit('error', {\n        code: error.code,\n        errorType: 'network',\n        ex: '[' + mod + ']: ' + (error ? error.message : ''),\n        errd: {}\n      });\n      this._onError(LOADER_EVENTS.LOADER_ERROR, mod, error, fatal);\n    }\n  }, {\n    key: '_onRemuxError',\n    value: function _onRemuxError(mod, error, fatal) {\n      if (fatal === undefined) {\n        fatal = true;\n      }\n      this._player.emit('error', {\n        errorType: 'parse',\n        ex: '[' + mod + ']: ' + error.message,\n        errd: {}\n      });\n      this._onError(REMUX_EVENTS.REMUX_ERROR, mod, error, fatal);\n    }\n  }, {\n    key: '_handleMseError',\n    value: function _handleMseError(tag, err, fatal) {\n      if (fatal === undefined) {\n        fatal = false;\n      }\n      this._player.emit('error', {\n        errorType: 'format',\n        ex: '[' + tag + ']: ' + err.message,\n        errd: {}\n      });\n      this._onError(MSE_EVENTS.MSE_ERROR, tag, err, fatal);\n    }\n  }, {\n    key: '_handleSEIParsed',\n    value: function _handleSEIParsed(sei) {\n      this._player.emit('SEI_PARSED', sei);\n    }\n  }, {\n    key: '_onLoadComplete',\n    value: function _onLoadComplete(buffer) {\n      if (buffer.TAG === 'M3U8_BUFFER') {\n        var mdata = void 0;\n        try {\n          this.m3u8Text = buffer.shift();\n          var result = MASTER_PLAYLIST_REGEX.exec(this.m3u8Text);\n          if (result && result[2]) {\n            // redirect\n            this.load(result[2]);\n          } else {\n            mdata = this._player.hlsOps.M3U8Parser.parse(this.m3u8Text, this.url);\n          }\n        } catch (error) {\n          this._onError('M3U8_PARSER_ERROR', 'M3U8_PARSER', error, false);\n        }\n\n        if (!mdata) {\n          if (this.retrytimes > 0) {\n            this.retrytimes--;\n            this._preload();\n          } else {\n            this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n            this.mse.endOfStream();\n          }\n          return;\n        }\n\n        try {\n          this._playlist.pushM3U8(mdata, true);\n        } catch (error) {\n          this._onError('M3U8_PARSER_ERROR', 'PLAYLIST', error, false);\n        }\n\n        if (this._playlist.encrypt && this._playlist.encrypt.uri && !this._playlist.encrypt.key) {\n          var XgBuffer = this._player.hlsOps.XgBuffer;\n\n          this._context.registry('DECRYPT_BUFFER', XgBuffer)();\n          this._context.registry('KEY_BUFFER', XgBuffer)();\n          this._tsloader.buffer = 'DECRYPT_BUFFER';\n          this._keyLoader = this._context.registry('KEY_LOADER', FetchLoader)({ buffer: 'KEY_BUFFER', readtype: 3 });\n\n          var _ref = this._player.config.retry || {},\n              times = _ref.count,\n              delayTime = _ref.delay;\n\n          this.emitTo('KEY_LOADER', LOADER_EVENTS.LADER_START, this._playlist.encrypt.uri, {}, times, delayTime);\n        } else {\n          this._m3u8Loaded(mdata);\n        }\n      } else if (buffer.TAG === 'TS_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.downloaded(this._tsloader.url, true);\n        this.emit(DEMUX_EVENTS.DEMUX_START);\n      } else if (buffer.TAG === 'DECRYPT_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.downloaded(this._tsloader.url, true);\n        this.emitTo('CRYPTO', CRYTO_EVENTS.START_DECRYPT);\n      } else if (buffer.TAG === 'KEY_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.encrypt.key = buffer.shift();\n        this._crypto = this._context.registry('CRYPTO', Crypto)({\n          key: this._playlist.encrypt.key,\n          iv: this._playlist.encrypt.ivb,\n          method: this._playlist.encrypt.method,\n          inputbuffer: 'DECRYPT_BUFFER',\n          outputbuffer: 'TS_BUFFER'\n        });\n        this._crypto.on(CRYTO_EVENTS.DECRYPTED, this._onDcripted.bind(this));\n      }\n    }\n  }, {\n    key: '_handleFetchRetry',\n    value: function _handleFetchRetry(tag, info) {\n      this._player.emit('retry', Object.assign({\n        tag: tag\n      }, info));\n    }\n  }, {\n    key: '_onDcripted',\n    value: function _onDcripted() {\n      this.emit(DEMUX_EVENTS.DEMUX_START);\n    }\n  }, {\n    key: '_m3u8Loaded',\n    value: function _m3u8Loaded(mdata) {\n      if (!this.preloadTime) {\n        this.preloadTime = this._playlist.targetduration ? this._playlist.targetduration : 5;\n      }\n      if (this._playlist.fragLength > 0 && this._playlist.sequence < mdata.sequence) {\n        this.retrytimes = this.configs.retrytimes || 3;\n      } else {\n        if (this.retrytimes > 0) {\n          this.retrytimes--;\n          this._preload();\n        } else {\n          this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n          this.mse.endOfStream();\n        }\n      }\n    }\n  }, {\n    key: '_checkStatus',\n    value: function _checkStatus() {\n      if (this.retrytimes < 1 && Date.now() - this._lastCheck < 4000) {\n        return;\n      } else if (this.retrytimes < 1) {\n        clearInterval(this._timmer);\n      }\n      this._lastCheck = new Date().getTime();\n      if (this.container.buffered.length < 1) {\n        this._preload();\n      } else {\n        // Check for load.\n        var currentTime = this.container.currentTime;\n        var bufferstart = this.container.buffered.start(this.container.buffered.length - 1);\n        if (this.container.readyState <= 2) {\n          if (currentTime < bufferstart) {\n            this.container.currentTime = bufferstart;\n            currentTime = bufferstart;\n          } else {\n            this._preload();\n          }\n        }\n        var bufferend = this.container.buffered.end(this.container.buffered.length - 1);\n        if (currentTime < bufferend - this.preloadTime * 2) {\n          this.container.currentTime = bufferend - this.preloadTime;\n        }\n\n        if (currentTime > bufferend - this.preloadTime) {\n          this._preload();\n        }\n      }\n    }\n  }, {\n    key: '_preload',\n    value: function _preload() {\n      if (this._tsloader.loading || this._m3u8loader.loading) {\n        return;\n      }\n      var frag = this._playlist.getTs();\n\n      var _ref2 = this._player.config.retry || {},\n          times = _ref2.count,\n          delayTime = _ref2.delay;\n\n      if (frag && !frag.downloaded && !frag.downloading) {\n        this._playlist.downloading(frag.url, true);\n        this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, frag.url, {}, times, delayTime);\n      } else {\n        var preloadTime = this.preloadTime ? this.preloadTime : 0;\n        var current = new Date().getTime();\n        if ((!frag || frag.downloaded) && (current - this._m3u8lasttime) / 1000 > preloadTime) {\n          this._m3u8lasttime = current;\n          this.emitTo('M3U8_LOADER', LOADER_EVENTS.LADER_START, this.url, {}, times, delayTime);\n        }\n      }\n    }\n  }, {\n    key: 'load',\n    value: function load(url) {\n      this.url = url;\n      this._preload();\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      clearInterval(this._timmer);\n      this.off(LOADER_EVENTS.LOADER_COMPLETE, this._onLoadComplete);\n      this.off(REMUX_EVENTS.INIT_SEGMENT, this.mse.addSourceBuffers);\n      this.off(REMUX_EVENTS.MEDIA_SEGMENT, this.mse.doAppend);\n      // this.off(REMUX_EVENTS.REMUX_ERROR);\n      this.off(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed);\n      this.off(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete);\n\n      this.mse = null;\n      this.m3u8Text = null;\n    }\n  }]);\n\n  return HlsLiveController;\n}();\n\nexport default HlsLiveController;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar AAC = function () {\n  function AAC() {\n    _classCallCheck(this, AAC);\n  }\n\n  _createClass(AAC, null, [{\n    key: 'getSilentFrame',\n    value: function getSilentFrame(codec, channelCount) {\n      if (codec === 'mp4a.40.2') {\n        // handle LC-AAC\n        if (channelCount === 1) {\n          return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x23, 0x80]);\n        } else if (channelCount === 2) {\n          return new Uint8Array([0x21, 0x00, 0x49, 0x90, 0x02, 0x19, 0x00, 0x23, 0x80]);\n        } else if (channelCount === 3) {\n          return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x8e]);\n        } else if (channelCount === 4) {\n          return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x80, 0x2c, 0x80, 0x08, 0x02, 0x38]);\n        } else if (channelCount === 5) {\n          return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x38]);\n        } else if (channelCount === 6) {\n          return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x00, 0xb2, 0x00, 0x20, 0x08, 0xe0]);\n        }\n      } else {\n        // handle HE-AAC (mp4a.40.5 / mp4a.40.29)\n        if (channelCount === 1) {\n          // ffmpeg -y -f lavfi -i \"aevalsrc=0:d=0.05\" -c:a libfdk_aac -profile:a aac_he -b:a 4k output.aac && hexdump -v -e '16/1 \"0x%x,\" \"\\n\"' -v output.aac\n          return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x4e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x1c, 0x6, 0xf1, 0xc1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);\n        } else if (channelCount === 2) {\n          // ffmpeg -y -f lavfi -i \"aevalsrc=0|0:d=0.05\" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 \"0x%x,\" \"\\n\"' -v output.aac\n          return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);\n        } else if (channelCount === 3) {\n          // ffmpeg -y -f lavfi -i \"aevalsrc=0|0|0:d=0.05\" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 \"0x%x,\" \"\\n\"' -v output.aac\n          return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);\n        }\n      }\n      return null;\n    }\n  }]);\n\n  return AAC;\n}();\n\nexport default AAC;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar ADTS = function () {\n  function ADTS() {\n    _classCallCheck(this, ADTS);\n  }\n\n  _createClass(ADTS, null, [{\n    key: \"isHeader\",\n    value: function isHeader(data, offset) {\n      // Look for ADTS header | 1111 1111 | 1111 X00X | where X can be either 0 or 1\n      // Layer bits (position 14 and 15) in header should be always 0 for ADTS\n      // More info https://wiki.multimedia.cx/index.php?title=ADTS\n      if (offset + 1 < data.length && ADTS.isHeaderPattern(data, offset)) {\n        return true;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"getFrameDuration\",\n    value: function getFrameDuration(samplerate) {\n      return 1024 * 90000 / samplerate;\n    }\n  }, {\n    key: \"isHeaderPattern\",\n    value: function isHeaderPattern(data, offset) {\n      return data[offset] === 0xff && (data[offset + 1] & 0xf6) === 0xf0;\n    }\n  }, {\n    key: \"getHeaderLength\",\n    value: function getHeaderLength(data, offset) {\n      return data[offset + 1] & 0x01 ? 7 : 9;\n    }\n  }, {\n    key: \"getFullFrameLength\",\n    value: function getFullFrameLength(data, offset) {\n      return (data[offset + 3] & 0x03) << 11 | data[offset + 4] << 3 | (data[offset + 5] & 0xE0) >>> 5;\n    }\n  }, {\n    key: \"parseFrameHeader\",\n    value: function parseFrameHeader(data, offset, pts, frameIndex, frameDuration) {\n      var headerLength = void 0,\n          frameLength = void 0,\n          stamp = void 0;\n      var length = data.length;\n\n      // The protection skip bit tells us if we have 2 bytes of CRC data at the end of the ADTS header\n      headerLength = ADTS.getHeaderLength(data, offset);\n      // retrieve frame size\n      frameLength = ADTS.getFullFrameLength(data, offset);\n      frameLength -= headerLength;\n\n      if (frameLength > 0 && offset + headerLength + frameLength <= length) {\n        stamp = pts + frameIndex * frameDuration;\n        // logger.log(`AAC frame, offset/length/total/pts:${offset+headerLength}/${frameLength}/${data.byteLength}/${(stamp/90).toFixed(0)}`);\n        return { headerLength: headerLength, frameLength: frameLength, stamp: stamp };\n      }\n\n      return undefined;\n    }\n  }, {\n    key: \"appendFrame\",\n    value: function appendFrame(sampleRate, data, offset, pts, frameIndex) {\n      var frameDuration = ADTS.getFrameDuration(sampleRate);\n      var header = ADTS.parseFrameHeader(data, offset, pts, frameIndex, frameDuration);\n      if (header) {\n        var stamp = header.stamp;\n        var headerLength = header.headerLength;\n        var frameLength = header.frameLength;\n\n        // logger.log(`AAC frame, offset/length/total/pts:${offset+headerLength}/${frameLength}/${data.byteLength}/${(stamp/90).toFixed(0)}`);\n        var aacSample = {\n          unit: data.subarray(offset + headerLength, offset + headerLength + frameLength),\n          pts: stamp,\n          dts: stamp\n        };\n\n        return { sample: aacSample, length: frameLength + headerLength };\n      }\n\n      return undefined;\n    }\n  }]);\n\n  return ADTS;\n}();\n\nexport default ADTS;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Golomb = function () {\n  /**\n   * @param {Uint8Array} uint8array\n   */\n  function Golomb(uint8array) {\n    _classCallCheck(this, Golomb);\n\n    this.TAG = 'Golomb';\n    this._buffer = uint8array;\n    this._bufferIndex = 0;\n    this._totalBytes = uint8array.byteLength;\n    this._totalBits = uint8array.byteLength * 8;\n    this._currentWord = 0;\n    this._currentWordBitsLeft = 0;\n  }\n\n  _createClass(Golomb, [{\n    key: 'destroy',\n    value: function destroy() {\n      this._buffer = null;\n    }\n  }, {\n    key: '_fillCurrentWord',\n    value: function _fillCurrentWord() {\n      var bufferBytesLeft = this._totalBytes - this._bufferIndex;\n      if (bufferBytesLeft <= 0) {\n        // TODO 异常处理\n      }\n\n      var bytesRead = Math.min(4, bufferBytesLeft);\n      var word = new Uint8Array(4);\n      word.set(this._buffer.subarray(this._bufferIndex, this._bufferIndex + bytesRead));\n      this._currentWord = new DataView(word.buffer).getUint32(0);\n\n      this._bufferIndex += bytesRead;\n      this._currentWordBitsLeft = bytesRead * 8;\n    }\n\n    /**\n     * @param size\n     * @return {number|*|number}\n     */\n\n  }, {\n    key: 'readBits',\n    value: function readBits(size) {\n      var bits = Math.min(this._currentWordBitsLeft, size); // :uint\n      var valu = this._currentWord >>> 32 - bits;\n      if (size > 32) {\n        throw new Error('Cannot read more than 32 bits at a time');\n      }\n      this._currentWordBitsLeft -= bits;\n      if (this._currentWordBitsLeft > 0) {\n        this._currentWord <<= bits;\n      } else if (this._totalBytes - this._bufferIndex > 0) {\n        this._fillCurrentWord();\n      }\n\n      bits = size - bits;\n      if (bits > 0 && this._currentWordBitsLeft) {\n        return valu << bits | this.readBits(bits);\n      } else {\n        return valu;\n      }\n    }\n\n    /**\n     * @return {boolean}\n     */\n\n  }, {\n    key: 'readBool',\n    value: function readBool() {\n      return this.readBits(1) === 1;\n    }\n\n    /**\n     * @return {*|number}\n     */\n\n  }, {\n    key: 'readByte',\n    value: function readByte() {\n      return this.readBits(8);\n    }\n  }, {\n    key: '_skipLeadingZero',\n    value: function _skipLeadingZero() {\n      var zeroCount = void 0;\n      for (zeroCount = 0; zeroCount < this._currentWordBitsLeft; zeroCount++) {\n        if ((this._currentWord & 0x80000000 >>> zeroCount) !== 0) {\n          this._currentWord <<= zeroCount;\n          this._currentWordBitsLeft -= zeroCount;\n          return zeroCount;\n        }\n      }\n      this._fillCurrentWord();\n      return zeroCount + this._skipLeadingZero();\n    }\n\n    /**\n     * @return {number}\n     */\n\n  }, {\n    key: 'readUEG',\n    value: function readUEG() {\n      // unsigned exponential golomb\n      var leadingZeros = this._skipLeadingZero();\n      return this.readBits(leadingZeros + 1) - 1;\n    }\n\n    /**\n     * @return {number}\n     */\n\n  }, {\n    key: 'readSEG',\n    value: function readSEG() {\n      // signed exponential golomb\n      var value = this.readUEG();\n      if (value & 0x01) {\n        return value + 1 >>> 1;\n      } else {\n        return -1 * (value >>> 1);\n      }\n    }\n  }, {\n    key: 'readSliceType',\n    value: function readSliceType() {\n      // skip NALu type Nal unit header 8bit\n      this.readByte();\n      // discard first_mb_in_slice\n      this.readUEG();\n      // return slice_type\n      return this.readUEG();\n    }\n  }]);\n\n  return Golomb;\n}();\n\nexport default Golomb;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport Golomb from './golomb';\n\nvar SPSParser = function () {\n  function SPSParser() {\n    _classCallCheck(this, SPSParser);\n  }\n\n  _createClass(SPSParser, null, [{\n    key: '_ebsp2rbsp',\n\n    /**\n     * 0x00000300  -> 0x000000\n     * 0x00000301  -> 0x000001\n     * 0x00000302  -> 0x000002\n     * 0x00000303  -> 0x000003\n     */\n    value: function _ebsp2rbsp(uint8array) {\n      var src = uint8array;\n      var srcLength = src.byteLength;\n      var dst = new Uint8Array(srcLength);\n      var dstIdx = 0;\n\n      for (var i = 0; i < srcLength; i++) {\n        if (i >= 2) {\n          if (src[i] === 0x03 && src[i - 1] === 0x00 && src[i - 2] === 0x00) {\n            continue;\n          }\n        }\n        dst[dstIdx] = src[i];\n        dstIdx++;\n      }\n\n      return new Uint8Array(dst.buffer, 0, dstIdx);\n    }\n  }, {\n    key: 'parseSPS',\n    value: function parseSPS(uint8array) {\n      var rbsp = SPSParser._ebsp2rbsp(uint8array);\n      var gb = new Golomb(rbsp);\n\n      gb.readByte();\n      var profileIdc = gb.readByte();\n      gb.readByte();\n      var levelIdc = gb.readByte();\n      gb.readUEG();\n\n      var profile_string = SPSParser.getProfileString(profileIdc);\n      var level_string = SPSParser.getLevelString(levelIdc);\n      var chroma_format_idc = 1;\n      var chroma_format = 420;\n      var chroma_format_table = [0, 420, 422, 444];\n      var bit_depth = 8;\n\n      if (profileIdc === 100 || profileIdc === 110 || profileIdc === 122 || profileIdc === 244 || profileIdc === 44 || profileIdc === 83 || profileIdc === 86 || profileIdc === 118 || profileIdc === 128 || profileIdc === 138 || profileIdc === 144) {\n        chroma_format_idc = gb.readUEG();\n        if (chroma_format_idc === 3) {\n          gb.readBits(1);\n        }\n        if (chroma_format_idc <= 3) {\n          chroma_format = chroma_format_table[chroma_format_idc];\n        }\n\n        bit_depth = gb.readUEG() + 8;\n        gb.readUEG();\n        gb.readBits(1);\n        if (gb.readBool()) {\n          var scaling_list_count = chroma_format_idc !== 3 ? 8 : 12;\n          for (var i = 0; i < scaling_list_count; i++) {\n            if (gb.readBool()) {\n              if (i < 6) {\n                SPSParser._skipScalingList(gb, 16);\n              } else {\n                SPSParser._skipScalingList(gb, 64);\n              }\n            }\n          }\n        }\n      }\n      gb.readUEG();\n      var pic_order_cnt_type = gb.readUEG();\n      if (pic_order_cnt_type === 0) {\n        gb.readUEG();\n      } else if (pic_order_cnt_type === 1) {\n        gb.readBits(1);\n        gb.readSEG();\n        gb.readSEG();\n        var num_ref_frames_in_pic_order_cnt_cycle = gb.readUEG();\n        for (var _i = 0; _i < num_ref_frames_in_pic_order_cnt_cycle; _i++) {\n          gb.readSEG();\n        }\n      }\n      gb.readUEG();\n      gb.readBits(1);\n\n      var pic_width_in_mbs_minus1 = gb.readUEG();\n      var pic_height_in_map_units_minus1 = gb.readUEG();\n\n      var frame_mbs_only_flag = gb.readBits(1);\n      if (frame_mbs_only_flag === 0) {\n        gb.readBits(1);\n      }\n      gb.readBits(1);\n\n      var frame_crop_left_offset = 0;\n      var frame_crop_right_offset = 0;\n      var frame_crop_top_offset = 0;\n      var frame_crop_bottom_offset = 0;\n\n      var frame_cropping_flag = gb.readBool();\n      if (frame_cropping_flag) {\n        frame_crop_left_offset = gb.readUEG();\n        frame_crop_right_offset = gb.readUEG();\n        frame_crop_top_offset = gb.readUEG();\n        frame_crop_bottom_offset = gb.readUEG();\n      }\n\n      var par_width = 1;var par_height = 1;\n      var fps = 0;var fps_fixed = true;var fps_num = 0;var fps_den = 0;\n\n      var vui_parameters_present_flag = gb.readBool();\n      if (vui_parameters_present_flag) {\n        if (gb.readBool()) {\n          // aspect_ratio_info_present_flag\n          var aspect_ratio_idc = gb.readByte();\n          var par_w_table = [1, 12, 10, 16, 40, 24, 20, 32, 80, 18, 15, 64, 160, 4, 3, 2];\n          var par_h_table = [1, 11, 11, 11, 33, 11, 11, 11, 33, 11, 11, 33, 99, 3, 2, 1];\n\n          if (aspect_ratio_idc > 0 && aspect_ratio_idc < 16) {\n            par_width = par_w_table[aspect_ratio_idc - 1];\n            par_height = par_h_table[aspect_ratio_idc - 1];\n          } else if (aspect_ratio_idc === 255) {\n            par_width = gb.readByte() << 8 | gb.readByte();\n            par_height = gb.readByte() << 8 | gb.readByte();\n          }\n        }\n\n        if (gb.readBool()) {\n          gb.readBool();\n        }\n        if (gb.readBool()) {\n          gb.readBits(4);\n          if (gb.readBool()) {\n            gb.readBits(24);\n          }\n        }\n        if (gb.readBool()) {\n          gb.readUEG();\n          gb.readUEG();\n        }\n        if (gb.readBool()) {\n          var num_units_in_tick = gb.readBits(32);\n          var time_scale = gb.readBits(32);\n          fps_fixed = gb.readBool();\n\n          fps_num = time_scale;\n          fps_den = num_units_in_tick * 2;\n          fps = fps_num / fps_den;\n        }\n      }\n\n      var parScale = 1;\n      if (par_width !== 1 || par_height !== 1) {\n        parScale = par_width / par_height;\n      }\n\n      var crop_unit_x = 0;var crop_unit_y = 0;\n      if (chroma_format_idc === 0) {\n        crop_unit_x = 1;\n        crop_unit_y = 2 - frame_mbs_only_flag;\n      } else {\n        var sub_wc = chroma_format_idc === 3 ? 1 : 2;\n        var sub_hc = chroma_format_idc === 1 ? 2 : 1;\n        crop_unit_x = sub_wc;\n        crop_unit_y = sub_hc * (2 - frame_mbs_only_flag);\n      }\n\n      var codec_width = (pic_width_in_mbs_minus1 + 1) * 16;\n      var codec_height = (2 - frame_mbs_only_flag) * ((pic_height_in_map_units_minus1 + 1) * 16);\n\n      codec_width -= (frame_crop_left_offset + frame_crop_right_offset) * crop_unit_x;\n      codec_height -= (frame_crop_top_offset + frame_crop_bottom_offset) * crop_unit_y;\n\n      var present_width = Math.ceil(codec_width * parScale);\n\n      gb.destroy();\n      gb = null;\n\n      return {\n        profile_string: profile_string,\n        level_string: level_string,\n        bit_depth: bit_depth,\n        chroma_format: chroma_format,\n        chroma_format_string: SPSParser.getChromaFormatString(chroma_format),\n\n        frame_rate: {\n          fixed: fps_fixed,\n          fps: fps,\n          fps_den: fps_den,\n          fps_num: fps_num\n        },\n\n        par_ratio: {\n          width: par_width,\n          height: par_height\n        },\n\n        codec_size: {\n          width: codec_width,\n          height: codec_height\n        },\n\n        present_size: {\n          width: present_width,\n          height: codec_height\n        }\n      };\n    }\n  }, {\n    key: '_skipScalingList',\n    value: function _skipScalingList(gb, count) {\n      var lastScale = 8;\n      var nextScale = 8;\n      var deltaScale = 0;\n      for (var i = 0; i < count; i++) {\n        if (nextScale !== 0) {\n          deltaScale = gb.readSEG();\n          nextScale = (lastScale + deltaScale + 256) % 256;\n        }\n        lastScale = nextScale === 0 ? lastScale : nextScale;\n      }\n    }\n  }, {\n    key: 'getProfileString',\n    value: function getProfileString(profileIdc) {\n      switch (profileIdc) {\n        case 66:\n          return 'Baseline';\n        case 77:\n          return 'Main';\n        case 88:\n          return 'Extended';\n        case 100:\n          return 'High';\n        case 110:\n          return 'High10';\n        case 122:\n          return 'High422';\n        case 244:\n          return 'High444';\n        default:\n          return 'Unknown';\n      }\n    }\n  }, {\n    key: 'getLevelString',\n    value: function getLevelString(levelIdc) {\n      return (levelIdc / 10).toFixed(1);\n    }\n  }, {\n    key: 'getChromaFormatString',\n    value: function getChromaFormatString(chroma) {\n      switch (chroma) {\n        case 420:\n          return '4:2:0';\n        case 422:\n          return '4:2:2';\n        case 444:\n          return '4:4:4';\n        default:\n          return 'Unknown';\n      }\n    }\n  }, {\n    key: 'toVideoMeta',\n    value: function toVideoMeta(spsConfig) {\n      var meta = {};\n      if (spsConfig && spsConfig.codec_size) {\n        meta.codecWidth = spsConfig.codec_size.width;\n        meta.codecHeight = spsConfig.codec_size.height;\n        meta.presentWidth = spsConfig.present_size.width;\n        meta.presentHeight = spsConfig.present_size.height;\n      }\n\n      meta.profile = spsConfig.profile_string;\n      meta.level = spsConfig.level_string;\n      meta.bitDepth = spsConfig.bit_depth;\n      meta.chromaFormat = spsConfig.chroma_format;\n\n      meta.parRatio = {\n        width: spsConfig.par_ratio.width,\n        height: spsConfig.par_ratio.height\n      };\n\n      meta.frameRate = spsConfig.frame_rate;\n\n      var fpsDen = meta.frameRate.fps_den;\n      var fpsNum = meta.frameRate.fps_num;\n      meta.refSampleDuration = Math.floor(meta.timescale * (fpsDen / fpsNum));\n      return meta;\n    }\n  }]);\n\n  return SPSParser;\n}();\n\nexport default SPSParser;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar RBSP = function () {\n  function RBSP() {\n    _classCallCheck(this, RBSP);\n  }\n\n  _createClass(RBSP, null, [{\n    key: \"EBSP2RBSP\",\n\n    /**\n     * convert EBSP to RBSP\n     * @param data {Uint8Array}\n     * @returns {Uint8Array}\n     * @constructor\n     */\n    value: function EBSP2RBSP(data) {\n      return data.filter(function (el, idx) {\n        if (idx < 2) {\n          return true;\n        } else {\n          return !(data[idx - 2] === 0 && data[idx - 1] === 0 && el === 3);\n        }\n      });\n    }\n\n    /**\n     * EBSP = SODB + '10000000'\n     * @param data {Uint8Array}\n     * @constructor\n     */\n\n  }, {\n    key: \"EBSP2SODB\",\n    value: function EBSP2SODB(data) {\n      var lastByte = data[data.byteLength - 1];\n      if (lastByte && lastByte === 128) {\n        return data.slice(0, data.byteLength - 1);\n      }\n\n      return data;\n    }\n  }]);\n\n  return RBSP;\n}();\n\nexport default RBSP;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport RBSP from './rbsp';\n\nvar u8aToString = function u8aToString(data) {\n  var result = '';\n  for (var i = 0; i < data.byteLength; i++) {\n    result += String.fromCharCode(data[i]);\n  }\n  return result;\n};\n\nvar SEIParser = function () {\n  function SEIParser() {\n    _classCallCheck(this, SEIParser);\n  }\n\n  _createClass(SEIParser, null, [{\n    key: '_resolveNalu',\n    value: function _resolveNalu(data) {\n      if (data.length >= 1) {\n        return RBSP.EBSP2SODB(RBSP.EBSP2RBSP(data.slice(1)));\n      }\n      return null;\n    }\n    /**\n     *\n     * @param data {Uint8Array}\n     */\n\n  }, {\n    key: 'parse',\n    value: function parse(data) {\n      var sodb = SEIParser._resolveNalu(data);\n\n      var _SEIParser$switchPayl = SEIParser.switchPayloadType(sodb),\n          payloadType = _SEIParser$switchPayl.payloadType,\n          offset = _SEIParser$switchPayl.offset;\n\n      var content = sodb.slice(offset);\n\n      switch (payloadType) {\n        case 5:\n          return SEIParser.user_data_unregistered(content);\n        default:\n          return {\n            code: payloadType,\n            content: content\n          };\n      }\n    }\n\n    /**\n     *\n     * @param data\n     * @returns {{payloadType: number, offset: number}}\n     */\n\n  }, {\n    key: 'switchPayloadType',\n    value: function switchPayloadType(data) {\n      var dv = new DataView(data.buffer);\n      var payloadType = 0;\n      var offset = 0;\n      while (dv.getUint8(offset) === 255) {\n        offset++;\n        payloadType += 255;\n      }\n      payloadType += dv.getUint8(offset++);\n\n      return {\n        payloadType: payloadType,\n        offset: offset\n      };\n    }\n\n    /**\n     *\n     * @param data {Uint8Array}\n     * @return {{ payloadLength: number, offset: number }}\n     */\n\n  }, {\n    key: 'getPayloadLength',\n    value: function getPayloadLength(data) {\n      var dv = new DataView(data.buffer);\n\n      var payloadLength = 0;\n      var offset = 0;\n      while (dv.getUint8(offset) === 255) {\n        offset++;\n        payloadLength += 255;\n      }\n      payloadLength += dv.getUint8(offset++);\n\n      return {\n        payloadLength: payloadLength,\n        offset: offset\n      };\n    }\n\n    /**\n     * resolve 0x05 user data unregistered\n     * @param data {Uint8Array}\n     */\n    // eslint-disable-next-line camelcase\n\n  }, {\n    key: 'user_data_unregistered',\n    value: function user_data_unregistered(data) {\n      var _SEIParser$getPayload = SEIParser.getPayloadLength(data),\n          payloadLength = _SEIParser$getPayload.payloadLength,\n          offset = _SEIParser$getPayload.offset;\n\n      if (payloadLength < 16) {\n        return {\n          uuid: '',\n          content: null\n        };\n      }\n      var payload = data.slice(offset);\n\n      var uuid = u8aToString(payload.slice(0, 16));\n      var content = u8aToString(payload.slice(16, payloadLength));\n\n      return {\n        code: 5, // for user data unregistered\n        uuid: uuid,\n        content: content\n      };\n    }\n  }]);\n\n  return SEIParser;\n}();\n\nexport default SEIParser;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport SpsParser from './sps';\nimport SEIParser from './sei';\n\nvar Nalunit = function () {\n  function Nalunit() {\n    _classCallCheck(this, Nalunit);\n  }\n\n  _createClass(Nalunit, null, [{\n    key: 'getNalunits',\n\n    // https://en.wikipedia.org/wiki/Network_Abstraction_Layer\n    value: function getNalunits(buffer) {\n      if (buffer.length - buffer.position < 4) {\n        return [];\n      }\n\n      var buf = buffer.dataview;\n      var position = buffer.position;\n      // 0x001 || 0x0001\n      if (buf.getInt32(position) === 1 || buf.getInt16(position) === 0 && buf.getInt8(position + 2) === 1) {\n        return Nalunit.getAnnexbNals(buffer);\n      } else {\n        return Nalunit.getAvccNals(buffer);\n      }\n    }\n  }, {\n    key: 'getAnnexbNals',\n    value: function getAnnexbNals(buffer) {\n      var nals = [];\n      var position = Nalunit.getHeaderPositionAnnexB(buffer);\n      var start = position.pos;\n      var end = start;\n      while (start < buffer.length - 4) {\n        var header = buffer.buffer.slice(start, start + position.headerLength);\n        if (position.pos === buffer.position) {\n          buffer.skip(position.headerLength);\n        }\n        position = Nalunit.getHeaderPositionAnnexB(buffer);\n        end = position.pos;\n        var body = new Uint8Array(buffer.buffer.slice(start + header.byteLength, end));\n        var unit = { header: header, body: body };\n        Nalunit.analyseNal(unit);\n        if (unit.type <= 9 && unit.type !== 0) {\n          nals.push(unit);\n        }\n        buffer.skip(end - buffer.position);\n        start = end;\n      }\n      return nals;\n    }\n  }, {\n    key: 'getAvccNals',\n    value: function getAvccNals(buffer) {\n      // buffer.buffer = RBSP.EBSP2RBSP(new Uint8Array(buffer.buffer)).buffer;\n      // buffer.dataview = new DataView(buffer.buffer)\n      // buffer.dataview.position = 0;\n      var nals = [];\n      while (buffer.position < buffer.length - 4) {\n        var length = buffer.dataview.getInt32(buffer.dataview.position);\n        if (buffer.length - buffer.position >= length) {\n          var header = buffer.buffer.slice(buffer.position, buffer.position + 4);\n          buffer.skip(4);\n          var body = new Uint8Array(buffer.buffer.slice(buffer.position, buffer.position + length));\n          buffer.skip(length);\n          var unit = { header: header, body: body };\n          Nalunit.analyseNal(unit);\n          if (unit.type <= 9 && unit.type !== 0) {\n            nals.push(unit);\n          }\n        } else {\n          break;\n        }\n      }\n      return nals;\n    }\n\n    // * ISO-14496-10 7.3.1\n    // *  forbidden_zero_bit  1bit\n    // *  nal_ref_idc  2bit\n    // *  nal_unit_type 5bit\n\n  }, {\n    key: 'analyseNal',\n    value: function analyseNal(unit) {\n      var type = unit.body[0] & 0x1f;\n      unit.type = type;\n      switch (type) {\n        case 1:\n          // NDR\n          unit.ndr = true;\n          break;\n        case 5:\n          // IDR\n          unit.idr = true;\n          break;\n        case 6:\n          // SEI\n          try {\n            unit.sei = SEIParser.parse(unit.body);\n          } catch (e) {}\n          break;\n        case 7:\n          // SPS\n          unit.sps = SpsParser.parseSPS(unit.body);\n          break;\n        case 8:\n          // PPS\n          unit.pps = true;\n          break;\n        case 9:\n          // AUD\n          break;\n        default:\n          break;\n      }\n    }\n  }, {\n    key: 'getHeaderPositionAnnexB',\n    value: function getHeaderPositionAnnexB(buffer) {\n      // seperate\n      var pos = buffer.position;\n      var headerLength = 0;\n      var bufferLen = buffer.length;\n      while (headerLength !== 3 && headerLength !== 4 && pos < bufferLen - 4) {\n        if (buffer.dataview.getInt16(pos) === 0) {\n          if (buffer.dataview.getInt16(pos + 2) === 1) {\n            // 0x000001\n            headerLength = 4;\n          } else if (buffer.dataview.getInt8(pos + 2) === 1) {\n            headerLength = 3;\n          } else {\n            pos++;\n          }\n        } else {\n          pos++;\n        }\n      }\n\n      if (pos === bufferLen - 4) {\n        if (buffer.dataview.getInt16(pos) === 0) {\n          if (buffer.dataview.getInt16(pos + 2) === 1) {\n            // 0x000001\n            headerLength = 4;\n          } else {\n            pos = bufferLen;\n          }\n        } else {\n          pos++;\n          if (buffer.dataview.getInt16(pos) === 0 && buffer.dataview.getInt8(pos) === 1) {\n            // 0x0000001\n            headerLength = 3;\n          } else {\n            pos = bufferLen;\n          }\n        }\n      }\n      return { pos: pos, headerLength: headerLength };\n    }\n\n    // 组装AvcDecoderConfigurationRecord\n    // *  configurationVerison = 1  uint(8)\n    // *  avcProfileIndication      uint(8)\n    // *  profile_compatibility     uint(8)\n    // *  avcLevelIndication        uint(8)\n    // *  reserved   `111111`       bit(6)\n    // *  lengthSizeMinusOne        uint(2)\n    // *  reserved   `111`          bit(3)\n    // *  numOfSPS                  uint(5)\n    // *  for(numOfSPS)\n    // *    spsLength               uint(16)\n    // *    spsNALUnit              spsLength个字节\n    // *  numOfPPS                  uint(8)\n    // *  for(numOfPPS)\n    // *     ppsLength              uint(16)\n    // *     ppsNALUnit             ppsLength个字节\n\n  }, {\n    key: 'getAvcc',\n    value: function getAvcc(sps, pps) {\n      var ret = new Uint8Array(sps.byteLength + pps.byteLength + 11);\n      ret[0] = 0x01;\n      ret[1] = sps[1];\n      ret[2] = sps[2];\n      ret[3] = sps[3];\n      ret[4] = 255;\n      ret[5] = 225; // 11100001\n\n      var offset = 6;\n\n      ret.set(new Uint8Array([sps.byteLength >>> 8 & 0xff, sps.byteLength & 0xff]), offset);\n      offset += 2;\n      ret.set(sps, offset);\n      offset += sps.byteLength;\n\n      ret[offset] = 1;\n      offset++;\n\n      ret.set(new Uint8Array([pps.byteLength >>> 8 & 0xff, pps.byteLength & 0xff]), offset);\n      offset += 2;\n      ret.set(pps, offset);\n      return ret;\n    }\n  }]);\n\n  return Nalunit;\n}();\n\nexport default Nalunit;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Golomb = function () {\n  /**\n   * @param {Uint8Array} uint8array\n   */\n  function Golomb(uint8array) {\n    _classCallCheck(this, Golomb);\n\n    this.TAG = 'Golomb';\n    this._buffer = uint8array;\n    this._bufferIndex = 0;\n    this._totalBytes = uint8array.byteLength;\n    this._totalBits = uint8array.byteLength * 8;\n    this._currentWord = 0;\n    this._currentWordBitsLeft = 0;\n  }\n\n  _createClass(Golomb, [{\n    key: 'destroy',\n    value: function destroy() {\n      this._buffer = null;\n    }\n  }, {\n    key: '_fillCurrentWord',\n    value: function _fillCurrentWord() {\n      var bufferBytesLeft = this._totalBytes - this._bufferIndex;\n      if (bufferBytesLeft <= 0) {\n        // TODO 异常处理\n      }\n\n      var bytesRead = Math.min(4, bufferBytesLeft);\n      var word = new Uint8Array(4);\n      word.set(this._buffer.subarray(this._bufferIndex, this._bufferIndex + bytesRead));\n      this._currentWord = new DataView(word.buffer).getUint32(0);\n\n      this._bufferIndex += bytesRead;\n      this._currentWordBitsLeft = bytesRead * 8;\n    }\n\n    /**\n     * @param size\n     * @return {number|*|number}\n     */\n\n  }, {\n    key: 'readBits',\n    value: function readBits(size) {\n      var bits = Math.min(this._currentWordBitsLeft, size); // :uint\n      var valu = this._currentWord >>> 32 - bits;\n      if (size > 32) {\n        throw new Error('Cannot read more than 32 bits at a time');\n      }\n      this._currentWordBitsLeft -= bits;\n      if (this._currentWordBitsLeft > 0) {\n        this._currentWord <<= bits;\n      } else if (this._totalBytes - this._bufferIndex > 0) {\n        this._fillCurrentWord();\n      }\n\n      bits = size - bits;\n      if (bits > 0 && this._currentWordBitsLeft) {\n        return valu << bits | this.readBits(bits);\n      } else {\n        return valu;\n      }\n    }\n\n    /**\n     * @return {boolean}\n     */\n\n  }, {\n    key: 'readBool',\n    value: function readBool() {\n      return this.readBits(1) === 1;\n    }\n\n    /**\n     * @return {*|number}\n     */\n\n  }, {\n    key: 'readByte',\n    value: function readByte() {\n      return this.readBits(8);\n    }\n  }, {\n    key: '_skipLeadingZero',\n    value: function _skipLeadingZero() {\n      var zeroCount = void 0;\n      for (zeroCount = 0; zeroCount < this._currentWordBitsLeft; zeroCount++) {\n        if ((this._currentWord & 0x80000000 >>> zeroCount) !== 0) {\n          this._currentWord <<= zeroCount;\n          this._currentWordBitsLeft -= zeroCount;\n          return zeroCount;\n        }\n      }\n      this._fillCurrentWord();\n      return zeroCount + this._skipLeadingZero();\n    }\n\n    /**\n     * @return {number}\n     */\n\n  }, {\n    key: 'readUEG',\n    value: function readUEG() {\n      // unsigned exponential golomb\n      var leadingZeros = this._skipLeadingZero();\n      return this.readBits(leadingZeros + 1) - 1;\n    }\n\n    /**\n     * @return {number}\n     */\n\n  }, {\n    key: 'readSEG',\n    value: function readSEG() {\n      // signed exponential golomb\n      var value = this.readUEG();\n      if (value & 0x01) {\n        return value + 1 >>> 1;\n      } else {\n        return -1 * (value >>> 1);\n      }\n    }\n  }, {\n    key: 'readSliceType',\n    value: function readSliceType() {\n      // skip NALu type Nal unit header 8bit\n      this.readByte();\n      // discard first_mb_in_slice\n      this.readUEG();\n      // return slice_type\n      return this.readUEG();\n    }\n  }]);\n\n  return Golomb;\n}();\n\nexport default Golomb;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport Golomb from './golomb';\n\nvar SPSParser = function () {\n  function SPSParser() {\n    _classCallCheck(this, SPSParser);\n  }\n\n  _createClass(SPSParser, null, [{\n    key: '_ebsp2rbsp',\n\n    /**\n     *\n     * @param {Uint8Array} uint8array\n     * @return {Uint8Array}\n     */\n    value: function _ebsp2rbsp(uint8array) {\n      var src = uint8array;\n      var srcLength = src.byteLength;\n      var dst = new Uint8Array(srcLength);\n      var dstIdx = 0;\n\n      for (var i = 0; i < srcLength; i++) {\n        if (i >= 2) {\n          if (src[i] === 0x03 && src[i - 1] === 0x00 && src[i - 2] === 0x00) {\n            continue;\n          }\n        }\n        dst[dstIdx] = src[i];\n        dstIdx++;\n      }\n\n      return new Uint8Array(dst.buffer, 0, dstIdx);\n    }\n\n    /**\n     * @param {Uint8Array} uint8array\n     * @return {{width: *, general_profile_idc: number, chromaFormatIdc: *, general_level_idc: number, general_tier_flag: number, bitDepthLumaMinus8: (*|number), bitDepthChromaMinus8: (*|number), general_profile_space: number, height: *}}\n     */\n\n  }, {\n    key: 'parseSPS',\n    value: function parseSPS(uint8array) {\n      var rbsp = SPSParser._ebsp2rbsp(uint8array);\n      var gb = new Golomb(rbsp);\n\n      var vpsId = 0;\n      var maxSubLayersMinus1 = 0;\n      var tINf = 0;\n      var spsId = 0;\n      var separate_colour_plane_flag = 0;\n      var chromaFormatIdc = 0;\n      var width = 0;\n      var height = 0;\n      var conf_win_left_offset = 0;\n      var conf_win_right_offset = 0;\n      var conf_win_top_offset = 0;\n      var conf_win_bottom_offset = 0;\n      var conformanceWindowFlag = 0;\n      var bitDepthLumaMinus8 = 0;\n      var bitDepthChromaMinus8 = 0;\n      var sub_width_c = 0;\n      var sub_height_c = 0;\n      var profileTierLevel = {};\n\n      gb.readByte(); // NAL header\n      gb.readByte();\n\n      vpsId = gb.readBits(4); // vps_id\n      maxSubLayersMinus1 = gb.readBits(3); // max_sub_layers_minus1\n      tINf = gb.readBits(1); // temporal_id_nesting_flag\n\n      profileTierLevel = SPSParser._readProfileTierLevel(gb, maxSubLayersMinus1);\n\n      spsId = gb.readUEG(); // sps id\n      chromaFormatIdc = gb.readUEG();\n      if (chromaFormatIdc === 3) {\n        separate_colour_plane_flag = gb.readBits(1); // separate_colour_plane_flag\n      }\n\n      width = gb.readUEG(); // pic_width_in_luma_samples\n      height = gb.readUEG(); // pic_height_in_luma_samples\n\n      conformanceWindowFlag = gb.readBits(1);\n      if (conformanceWindowFlag === 1) {\n        conf_win_left_offset = gb.readUEG(); // conf_win_left_offset\n        conf_win_right_offset = gb.readUEG(); // conf_win_right_offset\n        conf_win_top_offset = gb.readUEG(); // conf_win_top_offset\n        conf_win_bottom_offset = gb.readUEG(); // conf_win_bottom_offset\n      }\n\n      bitDepthLumaMinus8 = gb.readUEG(); // bit_depth_luma_minus8\n      bitDepthChromaMinus8 = gb.readUEG(); // bit_depth_chroma_minus8\n\n      if (conformanceWindowFlag === 1) {\n        sub_width_c = (chromaFormatIdc === 1 || chromaFormatIdc === 2) && separate_colour_plane_flag === 0 ? 2 : 1;\n        sub_height_c = chromaFormatIdc === 1 && separate_colour_plane_flag === 0 ? 2 : 1;\n        width -= sub_width_c * conf_win_right_offset + sub_width_c * conf_win_left_offset;\n        height -= sub_height_c * conf_win_bottom_offset + sub_height_c * conf_win_top_offset;\n      }\n\n      gb.destroy();\n      gb = null;\n\n      return { width: width,\n        height: height,\n        general_profile_space: profileTierLevel.general_profile_space,\n        general_tier_flag: profileTierLevel.general_tier_flag,\n        general_profile_idc: profileTierLevel.general_profile_idc,\n        general_level_idc: profileTierLevel.general_level_idc,\n        chromaFormatIdc: chromaFormatIdc,\n        bitDepthLumaMinus8: bitDepthLumaMinus8,\n        bitDepthChromaMinus8: bitDepthChromaMinus8 };\n    }\n\n    // static parseSPS (uint8array) {\n    //   let rbsp = SPSParser._ebsp2rbsp(uint8array)\n    //   let gb = new Golomb(rbsp)\n    //\n    //   gb.readByte()\n    //   let profileIdc = gb.readByte()\n    //   gb.readByte()\n    //   let levelIdc = gb.readByte()\n    //   gb.readUEG()\n    //\n    //   let profile_string = SPSParser.getProfileString(profileIdc)\n    //   let level_string = SPSParser.getLevelString(levelIdc)\n    //   let chroma_format_idc = 1\n    //   let chroma_format = 420\n    //   let chroma_format_table = [0, 420, 422, 444]\n    //   let bit_depth = 8\n    //\n    //   if (profileIdc === 100 || profileIdc === 110 || profileIdc === 122 ||\n    //     profileIdc === 244 || profileIdc === 44 || profileIdc === 83 ||\n    //     profileIdc === 86 || profileIdc === 118 || profileIdc === 128 ||\n    //     profileIdc === 138 || profileIdc === 144) {\n    //     chroma_format_idc = gb.readUEG()\n    //     if (chroma_format_idc === 3) {\n    //       gb.readBits(1)\n    //     }\n    //     if (chroma_format_idc <= 3) {\n    //       chroma_format = chroma_format_table[chroma_format_idc]\n    //     }\n    //\n    //     bit_depth = gb.readUEG() + 8\n    //     gb.readUEG()\n    //     gb.readBits(1)\n    //     if (gb.readBool()) {\n    //       let scaling_list_count = (chroma_format_idc !== 3) ? 8 : 12\n    //       for (let i = 0; i < scaling_list_count; i++) {\n    //         if (gb.readBool()) {\n    //           if (i < 6) {\n    //             SPSParser._skipScalingList(gb, 16)\n    //           } else {\n    //             SPSParser._skipScalingList(gb, 64)\n    //           }\n    //         }\n    //       }\n    //     }\n    //   }\n    //   gb.readUEG()\n    //   let pic_order_cnt_type = gb.readUEG()\n    //   if (pic_order_cnt_type === 0) {\n    //     gb.readUEG()\n    //   } else if (pic_order_cnt_type === 1) {\n    //     gb.readBits(1)\n    //     gb.readSEG()\n    //     gb.readSEG()\n    //     let num_ref_frames_in_pic_order_cnt_cycle = gb.readUEG()\n    //     for (let i = 0; i < num_ref_frames_in_pic_order_cnt_cycle; i++) {\n    //       gb.readSEG()\n    //     }\n    //   }\n    //   gb.readUEG()\n    //   gb.readBits(1)\n    //\n    //   let pic_width_in_mbs_minus1 = gb.readUEG()\n    //   let pic_height_in_map_units_minus1 = gb.readUEG()\n    //\n    //   let frame_mbs_only_flag = gb.readBits(1)\n    //   if (frame_mbs_only_flag === 0) {\n    //     gb.readBits(1)\n    //   }\n    //   gb.readBits(1)\n    //\n    //   let frame_crop_left_offset = 0\n    //   let frame_crop_right_offset = 0\n    //   let frame_crop_top_offset = 0\n    //   let frame_crop_bottom_offset = 0\n    //\n    //   let frame_cropping_flag = gb.readBool()\n    //   if (frame_cropping_flag) {\n    //     frame_crop_left_offset = gb.readUEG()\n    //     frame_crop_right_offset = gb.readUEG()\n    //     frame_crop_top_offset = gb.readUEG()\n    //     frame_crop_bottom_offset = gb.readUEG()\n    //   }\n    //\n    //   let par_width = 1, par_height = 1\n    //   let fps = 0, fps_fixed = true, fps_num = 0, fps_den = 0\n    //\n    //   let vui_parameters_present_flag = gb.readBool()\n    //   if (vui_parameters_present_flag) {\n    //     if (gb.readBool()) { // aspect_ratio_info_present_flag\n    //       let aspect_ratio_idc = gb.readByte()\n    //       let par_w_table = [1, 12, 10, 16, 40, 24, 20, 32, 80, 18, 15, 64, 160, 4, 3, 2]\n    //       let par_h_table = [1, 11, 11, 11, 33, 11, 11, 11, 33, 11, 11, 33, 99, 3, 2, 1]\n    //\n    //       if (aspect_ratio_idc > 0 && aspect_ratio_idc < 16) {\n    //         par_width = par_w_table[aspect_ratio_idc - 1]\n    //         par_height = par_h_table[aspect_ratio_idc - 1]\n    //       } else if (aspect_ratio_idc === 255) {\n    //         par_width = gb.readByte() << 8 | gb.readByte()\n    //         par_height = gb.readByte() << 8 | gb.readByte()\n    //       }\n    //     }\n    //\n    //     if (gb.readBool()) {\n    //       gb.readBool()\n    //     }\n    //     if (gb.readBool()) {\n    //       gb.readBits(4)\n    //       if (gb.readBool()) {\n    //         gb.readBits(24)\n    //       }\n    //     }\n    //     if (gb.readBool()) {\n    //       gb.readUEG()\n    //       gb.readUEG()\n    //     }\n    //     if (gb.readBool()) {\n    //       let num_units_in_tick = gb.readBits(32)\n    //       let time_scale = gb.readBits(32)\n    //       fps_fixed = gb.readBool()\n    //\n    //       fps_num = time_scale\n    //       fps_den = num_units_in_tick * 2\n    //       fps = fps_num / fps_den\n    //     }\n    //   }\n    //\n    //   let parScale = 1\n    //   if (par_width !== 1 || par_height !== 1) {\n    //     parScale = par_width / par_height\n    //   }\n    //\n    //   let crop_unit_x = 0, crop_unit_y = 0\n    //   if (chroma_format_idc === 0) {\n    //     crop_unit_x = 1\n    //     crop_unit_y = 2 - frame_mbs_only_flag\n    //   } else {\n    //     let sub_wc = (chroma_format_idc === 3) ? 1 : 2\n    //     let sub_hc = (chroma_format_idc === 1) ? 2 : 1\n    //     crop_unit_x = sub_wc\n    //     crop_unit_y = sub_hc * (2 - frame_mbs_only_flag)\n    //   }\n    //\n    //   let codec_width = (pic_width_in_mbs_minus1 + 1) * 16\n    //   let codec_height = (2 - frame_mbs_only_flag) * ((pic_height_in_map_units_minus1 + 1) * 16)\n    //\n    //   codec_width -= (frame_crop_left_offset + frame_crop_right_offset) * crop_unit_x\n    //   codec_height -= (frame_crop_top_offset + frame_crop_bottom_offset) * crop_unit_y\n    //\n    //   let present_width = Math.ceil(codec_width * parScale)\n    //\n    //   gb.destroy()\n    //   gb = null\n    //\n    //   return {\n    //     profile_string: profile_string,\n    //     level_string: level_string,\n    //     bit_depth: bit_depth,\n    //     chroma_format: chroma_format,\n    //     chroma_format_string: SPSParser.getChromaFormatString(chroma_format),\n    //\n    //     frame_rate: {\n    //       fixed: fps_fixed,\n    //       fps: fps,\n    //       fps_den: fps_den,\n    //       fps_num: fps_num\n    //     },\n    //\n    //     par_ratio: {\n    //       width: par_width,\n    //       height: par_height\n    //     },\n    //\n    //     codec_size: {\n    //       width: codec_width,\n    //       height: codec_height\n    //     },\n    //\n    //     present_size: {\n    //       width: present_width,\n    //       height: codec_height\n    //     }\n    //   }\n    // }\n    /**\n     * @param gb\n     * @param maxSubLayersMinus1\n     * @return {{general_profile_idc: (*|number), general_level_idc: (*|number), general_tier_flag: (*|number), general_profile_space: (*|number)}}\n     */\n\n  }, {\n    key: '_readProfileTierLevel',\n    value: function _readProfileTierLevel(gb, maxSubLayersMinus1) {\n      var general_profile_space = 0;\n      var general_tier_flag = 0;\n      var general_profile_idc = 0;\n      var general_level_idc = 0;\n      general_profile_space = gb.readBits(2) || 0; // profile_space\n      general_tier_flag = gb.readBits(1) || 0; // tierFlag\n      general_profile_idc = gb.readBits(5) || 0; // profileIdc\n\n      gb.readBits(16); // some 32bits\n      gb.readBits(16);\n\n      gb.readBits(1); // progressiveSourceFlag\n      gb.readBits(1); // interlacedSourceFlag\n      gb.readBits(1); // nonPackedConstraintFlag\n      gb.readBits(1); // frameOnlyConstraintFlag\n\n      gb.readBits(16); // reserved zero bits\n      gb.readBits(16);\n      gb.readBits(12);\n\n      general_level_idc = gb.readBits(8) || 0; // level_idc\n\n      var subLayerProfilePresentFlag = [];\n      var subLayerLevelPresentFlag = [];\n      for (var j = 0; j < maxSubLayersMinus1; j++) {\n        subLayerProfilePresentFlag[j] = gb.readBits(1);\n        subLayerLevelPresentFlag[j] = gb.readBits(1);\n      }\n\n      if (maxSubLayersMinus1 > 0) {\n        gb.readBits((8 - maxSubLayersMinus1) * 2);\n      }\n\n      for (var i = 0; i < maxSubLayersMinus1; i++) {\n        if (subLayerProfilePresentFlag[i] !== 0) {\n          gb.readBits(2);\n          gb.readBits(1);\n          gb.readBits(5);\n\n          gb.readBits(16);\n          gb.readBits(16);\n\n          gb.readBits(4);\n\n          gb.readBits(16);\n          gb.readBits(16);\n          gb.readBits(12);\n        }\n        if (subLayerLevelPresentFlag[i] !== 0) {\n          gb.readBits(8);\n        }\n      }\n\n      return {\n        general_profile_space: general_profile_space,\n        general_tier_flag: general_tier_flag,\n        general_profile_idc: general_profile_idc,\n        general_level_idc: general_level_idc\n      };\n    }\n\n    /**\n     *\n     *  @param {any} gb\n     * @param {number}count\n     */\n\n  }, {\n    key: '_skipScalingList',\n    value: function _skipScalingList(gb, count) {\n      var lastScale = 8;\n      var nextScale = 8;\n      var deltaScale = 0;\n      for (var i = 0; i < count; i++) {\n        if (nextScale !== 0) {\n          deltaScale = gb.readSEG();\n          nextScale = (lastScale + deltaScale + 256) % 256;\n        }\n        lastScale = nextScale === 0 ? lastScale : nextScale;\n      }\n    }\n\n    /**\n     *\n     * @param {number} profileIdc\n     * @return {string}\n     */\n\n  }, {\n    key: 'getProfileString',\n    value: function getProfileString(profileIdc) {\n      switch (profileIdc) {\n        case 66:\n          return 'Baseline';\n        case 77:\n          return 'Main';\n        case 88:\n          return 'Extended';\n        case 100:\n          return 'High';\n        case 110:\n          return 'High10';\n        case 122:\n          return 'High422';\n        case 244:\n          return 'High444';\n        default:\n          return 'Unknown';\n      }\n    }\n\n    /**\n     * @param {number} levelIdc\n     * @return {string}\n     */\n\n  }, {\n    key: 'getLevelString',\n    value: function getLevelString(levelIdc) {\n      return (levelIdc / 10).toFixed(1);\n    }\n\n    /**\n     * @param {number} chroma\n     * @return {string}\n     */\n\n  }, {\n    key: 'getChromaFormatString',\n    value: function getChromaFormatString(chroma) {\n      switch (chroma) {\n        case 420:\n          return '4:2:0';\n        case 422:\n          return '4:2:2';\n        case 444:\n          return '4:4:4';\n        default:\n          return 'Unknown';\n      }\n    }\n\n    /**\n     * @param {any} spsConfig\n     * @return {any}\n     */\n\n  }, {\n    key: 'toVideoMeta',\n    value: function toVideoMeta(spsConfig) {\n      var meta = {};\n      if (spsConfig && spsConfig.codec_size) {\n        meta.codecWidth = spsConfig.codec_size.width;\n        meta.codecHeight = spsConfig.codec_size.height;\n        meta.presentWidth = spsConfig.present_size.width;\n        meta.presentHeight = spsConfig.present_size.height;\n      } else if (spsConfig.width && spsConfig.height) {\n        meta.codecWidth = spsConfig.width;\n        meta.codecHeight = spsConfig.height;\n        meta.presentWidth = spsConfig.width;\n        meta.presentHeight = spsConfig.height;\n      }\n\n      meta.profile = spsConfig.profile_string;\n      meta.level = spsConfig.level_string;\n      meta.bitDepth = spsConfig.bit_depth;\n      meta.chromaFormat = spsConfig.chroma_format;\n\n      // meta.parRatio = {\n      //   width: spsConfig.par_ratio.width,\n      //   height: spsConfig.par_ratio.height\n      // }\n\n      // meta.frameRate = spsConfig.frame_rate\n\n      // let fpsDen = meta.frameRate.fps_den\n      // let fpsNum = meta.frameRate.fps_num\n      // meta.refSampleDuration = Math.floor(meta.timescale * (fpsDen / fpsNum))\n      return meta;\n    }\n  }]);\n\n  return SPSParser;\n}();\n\nexport default SPSParser;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar RBSP = function () {\n  function RBSP() {\n    _classCallCheck(this, RBSP);\n  }\n\n  _createClass(RBSP, null, [{\n    key: \"EBSP2RBSP\",\n\n    /**\n     * convert EBSP to RBSP\n     * @param {Uint8Array} data\n     * @returns {Uint8Array}\n     * @constructor\n     */\n    value: function EBSP2RBSP(data) {\n      return data.filter(function (el, idx) {\n        if (idx < 2) {\n          return true;\n        } else {\n          return !(data[idx - 2] === 0 && data[idx - 1] === 0 && el === 3);\n        }\n      });\n    }\n\n    /**\n     * @param {Uint8Array} data\n     * @constructor\n     */\n\n  }, {\n    key: \"EBSP2SODB\",\n    value: function EBSP2SODB(data) {\n      var lastByte = data[data.byteLength - 1];\n      if (lastByte && lastByte === 128) {\n        return data.slice(0, data.byteLength - 1);\n      }\n\n      return data;\n    }\n  }]);\n\n  return RBSP;\n}();\n\nexport default RBSP;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport RBSP from './rbsp';\n\n/**\n * @param {Uint8Array} data\n * @return {string}\n */\nvar u8aToString = function u8aToString(data) {\n  var result = '';\n  for (var i = 0; i < data.byteLength; i++) {\n    result += String.fromCharCode(data[i]);\n  }\n  return result;\n};\n\nvar SEIParser = function () {\n  function SEIParser() {\n    _classCallCheck(this, SEIParser);\n  }\n\n  _createClass(SEIParser, null, [{\n    key: '_resolveNalu',\n    value: function _resolveNalu(data) {\n      if (data.length >= 1) {\n        return RBSP.EBSP2SODB(RBSP.EBSP2RBSP(data.slice(1)));\n      }\n      return null;\n    }\n\n    /**\n     * @param {Uint8Array} data\n     * @return {{uuid: string, content: null}|{code: number, uuid: string, content: string}|{code: number, content: Uint8Array}}\n     */\n\n  }, {\n    key: 'parse',\n    value: function parse(data) {\n      var sodb = SEIParser._resolveNalu(data);\n\n      var _SEIParser$switchPayl = SEIParser.switchPayloadType(sodb),\n          payloadType = _SEIParser$switchPayl.payloadType,\n          offset = _SEIParser$switchPayl.offset;\n\n      var content = sodb.slice(offset);\n\n      switch (payloadType) {\n        case 5:\n          return SEIParser.user_data_unregistered(content);\n        default:\n          return {\n            code: payloadType,\n            content: content\n          };\n      }\n    }\n\n    /**\n     *\n     * @param {Uint8Array} data\n     * @returns {{payloadType: number, offset: number}}\n     */\n\n  }, {\n    key: 'switchPayloadType',\n    value: function switchPayloadType(data) {\n      var dv = new DataView(data.buffer);\n      var payloadType = 0;\n      var offset = 0;\n      while (dv.getUint8(offset) === 255) {\n        offset++;\n        payloadType += 255;\n      }\n      payloadType += dv.getUint8(offset++);\n\n      return {\n        payloadType: payloadType,\n        offset: offset\n      };\n    }\n\n    /**\n     *\n     * @param {Uint8Array} data\n     * @return {{ payloadLength: number, offset: number }}\n     */\n\n  }, {\n    key: 'getPayloadLength',\n    value: function getPayloadLength(data) {\n      var dv = new DataView(data.buffer);\n\n      var payloadLength = 0;\n      var offset = 0;\n      while (dv.getUint8(offset) === 255) {\n        offset++;\n        payloadLength += 255;\n      }\n      payloadLength += dv.getUint8(offset++);\n\n      return {\n        payloadLength: payloadLength,\n        offset: offset\n      };\n    }\n\n    /**\n     * resolve 0x05 user data unregistered\n     * @param {Uint8Array} data\n     */\n    // eslint-disable-next-line camelcase\n\n  }, {\n    key: 'user_data_unregistered',\n    value: function user_data_unregistered(data) {\n      var _SEIParser$getPayload = SEIParser.getPayloadLength(data),\n          payloadLength = _SEIParser$getPayload.payloadLength,\n          offset = _SEIParser$getPayload.offset;\n\n      if (payloadLength < 16) {\n        return {\n          uuid: '',\n          content: null\n        };\n      }\n      var payload = data.slice(offset);\n\n      var uuid = u8aToString(payload.slice(0, 16));\n      var content = u8aToString(payload.slice(16, payloadLength));\n\n      return {\n        code: 5, // for user data unregistered\n        uuid: uuid,\n        content: content\n      };\n    }\n  }]);\n\n  return SEIParser;\n}();\n\nexport default SEIParser;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport SpsParser from './sps';\nimport SEIParser from './sei';\n\nvar Nalunit = function () {\n  function Nalunit() {\n    _classCallCheck(this, Nalunit);\n  }\n\n  _createClass(Nalunit, null, [{\n    key: 'getNalunits',\n\n    /**\n     * @param {any} buffer\n     * @return {[]|*[]}\n     */\n    value: function getNalunits(buffer) {\n      if (buffer.length - buffer.position < 4) {\n        return [];\n      }\n\n      var buf = buffer.dataview;\n      var position = buffer.position;\n\n      if (buf.getInt32(position) === 1 || buf.getInt16(position) === 0 && buf.getInt8(position + 2) === 1) {\n        return Nalunit.getAnnexbNals(buffer);\n      } else {\n        return Nalunit.getHvccNals(buffer);\n      }\n    }\n\n    /**\n     * @param {any} buffer\n     * @return {[]}\n     */\n\n  }, {\n    key: 'getAnnexbNals',\n    value: function getAnnexbNals(buffer) {\n      var nals = [];\n      var position = Nalunit.getHeaderPositionAnnexB(buffer);\n      var start = position.pos;\n      var end = start;\n      while (start < buffer.length - 4) {\n        var header = buffer.buffer.slice(start, start + position.headerLength);\n        if (position.pos === buffer.position) {\n          buffer.skip(position.headerLength);\n        }\n        position = Nalunit.getHeaderPositionAnnexB(buffer);\n        end = position.pos;\n        var body = new Uint8Array(buffer.buffer.slice(start + header.byteLength, end));\n        var unit = { header: header, body: body };\n        Nalunit.analyseNal(unit);\n        if (unit.type <= 40) {\n          nals.push(unit);\n        }\n        buffer.skip(end - buffer.position);\n        start = end;\n      }\n      return nals;\n    }\n\n    // |四字节 nalSize| nalUnit |\n    /**\n     * @param {any} buffer\n     * @return {[]}\n     */\n\n  }, {\n    key: 'getHvccNals',\n    value: function getHvccNals(buffer) {\n      // console.log('getHvccNals')\n      var nals = [];\n      while (buffer.position < buffer.length - 4) {\n        // console.log('buffer')\n        // console.log(buffer)\n        // console.log(buffer.position)\n        // console.log(buffer.length)\n        // console.log(buffer.dataview)\n        // let length = buffer.dataview.getInt32();\n        var length = buffer.dataview.getInt32(buffer.dataview.position);\n        if (buffer.length - buffer.position >= length) {\n          var header = buffer.buffer.slice(buffer.position, buffer.position + 4);\n          buffer.skip(4);\n          var body = new Uint8Array(buffer.buffer.slice(buffer.position, buffer.position + length));\n          buffer.skip(length);\n          var unit = { header: header, body: body };\n          try {\n            Nalunit.analyseNal(unit);\n          } catch (e) {\n            continue;\n          }\n          if (unit.type <= 40) {\n            nals.push(unit);\n          }\n        } else {\n          break;\n        }\n      }\n      return nals;\n    }\n\n    /**\n     * @param {any} unit\n     */\n\n  }, {\n    key: 'analyseNal',\n    value: function analyseNal(unit) {\n      var type = unit.body[0] >>> 1 & 0x3f;\n      unit.type = type;\n      switch (type) {\n        case 0:\n          // SLICE_TRAIL_N\n          unit.slice_trail_n = true;\n          break;\n        case 1:\n          // SLICE_TRAIL_R\n          unit.slice_trail_r = true;\n          unit.key = true;\n          break;\n        case 2:\n          // SLICE_TSA_N\n          unit.slice_tsa_n = true;\n          break;\n        case 3:\n          // SLICE_TSA_R\n          unit.slice_tsa_r = true;\n          unit.key = true;\n          break;\n        case 4:\n          // SLICE_STSA_N\n          unit.slice_stsa_n = true;\n          break;\n        case 5:\n          // SLICE_STSA_R\n          unit.slice_stsa_r = true;\n          unit.key = true;\n          break;\n        case 6:\n          // SLICE_RADL_N\n          unit.slice_radl_n = true;\n          break;\n        case 7:\n          // SLICE_RADL_R\n          unit.slice_radl_r = true;\n          unit.key = true;\n          break;\n        case 8:\n          // SLICE_RASL_N\n          unit.slice_rasl_n = true;\n          break;\n        case 9:\n          // SLICE_RASL_R\n          unit.slice_rasl_r = true;\n          unit.key = true;\n          break;\n        case 16:\n          // SLICE_BLA_W_LP\n          unit.slice_bla_w_lp = true;\n          break;\n        case 17:\n          // SLICE_BLA_W_RADL\n          unit.slice_bla_w_radl = true;\n          break;\n        case 18:\n          // SLICE_BLA_N_LP\n          unit.slice_bla_n_lp = true;\n          break;\n        case 19:\n          // SLICE_IDR_W_RADL\n          unit.slice_idl_w_radl = true;\n          unit.key = true;\n          break;\n        case 20:\n          // SLICE_IDR_N_LP\n          unit.slice_idr_n_lp = true;\n          unit.key = true;\n          break;\n        case 21:\n          // SLICE_CRA_NUT\n          unit.slice_cra_nut = true;\n          unit.key = true;\n          break;\n        case 32:\n          // VPS\n          unit.vps = true;\n          break;\n        case 33:\n          // SPS\n          unit.sps = SpsParser.parseSPS(unit.body);\n          break;\n        case 34:\n          // PPS\n          unit.pps = true;\n          break;\n        case 35:\n          // AUD\n          break;\n        case 36:\n          // EOS\n          unit.aud = true;\n          break;\n        case 37:\n          // EOB\n          unit.eob = true;\n          break;\n        case 38:\n          // FD\n          unit.fd = true;\n          break;\n        case 39:\n          // PREFIX_SEI\n          // unit.prefix_sei = true;\n          try {\n            unit.sei = SEIParser.parse(unit.body.slice(1));\n          } catch (e) {}\n          break;\n        case 40:\n          // SUFFIX_SEI\n          unit.sei = SEIParser.parse(unit.body.slice(1));\n          break;\n        default:\n          break;\n      }\n    }\n  }, {\n    key: 'getHeaderPositionAnnexB',\n    value: function getHeaderPositionAnnexB(buffer) {\n      // seperate\n      var pos = buffer.position;\n      var headerLength = 0;\n      var bufferLen = buffer.length;\n      while (headerLength !== 3 && headerLength !== 4 && pos < bufferLen - 4) {\n        if (buffer.dataview.getInt16(pos) === 0) {\n          if (buffer.dataview.getInt16(pos + 2) === 1) {\n            // 0x00000001\n            headerLength = 4;\n          } else if (buffer.dataview.getInt8(pos + 2) === 1) {\n            headerLength = 3;\n          } else {\n            pos++;\n          }\n        } else {\n          pos++;\n        }\n      }\n\n      if (pos === bufferLen - 4) {\n        if (buffer.dataview.getInt16(pos) === 0) {\n          if (buffer.dataview.getInt16(pos + 2) === 1) {\n            // 0x00000001\n            headerLength = 4;\n          }\n        } else {\n          pos++;\n          if (buffer.dataview.getInt16(pos) === 0 && buffer.dataview.getInt8(pos) === 1) {\n            // 0x000001\n            headerLength = 3;\n          } else {\n            pos = bufferLen;\n          }\n        }\n      }\n      return { pos: pos, headerLength: headerLength };\n    }\n  }]);\n\n  return Nalunit;\n}();\n\nexport default Nalunit;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS, common, logger } from 'xgplayer-helper-utils';\nimport AAC from '../aac';\n\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\nvar caculate = common.caculate;\n\nvar Compatibility = function () {\n  function Compatibility() {\n    var _this = this;\n\n    _classCallCheck(this, Compatibility);\n\n    this.TAG = 'Compatibility';\n    this.nextAudioDts = 0; // 模拟下一段音频数据的dts\n    this.nextVideoDts = 0; // 模拟下一段视频数据的dts\n\n    this.lastAudioSamplesLen = 0; // 上一段音频数据的长度\n    this.lastVideoSamplesLen = 0; // 上一段视频数据的长度\n\n    this.lastVideoDts = undefined; // 上一段音频数据的长度\n    this.lastAudioDts = undefined; // 上一段视频数据的长度\n\n    this.allAudioSamplesCount = 0; // 音频总数据量(原始帧)\n    this.allVideoSamplesCount = 0; // 视频总数据量(原始帧)\n\n    this._firstAudioSample = null;\n    this._firstVideoSample = null;\n\n    this.filledAudioSamples = []; // 补充音频帧（）\n    this.filledVideoSamples = []; // 补充视频帧（）\n\n    this._lastSegmentId = 0;\n    this._currentSegmentId = 0;\n    this.videoLastSample = null;\n    this.audioLastSample = null; // stash last sample for duration compat\n\n    Object.defineProperties(this, {\n      _videoLargeGap: {\n        set: function set(value) {\n          _this.___videoLargeGap = value;\n          if (value !== 0) {\n            _this.emit(REMUX_EVENTS.DETECT_LARGE_GAP, 'video', value);\n          }\n        },\n        get: function get() {\n          return _this.___videoLargeGap || 0;\n        }\n      },\n      _audioLargeGap: {\n        set: function set(value) {\n          _this.___audioLargeGap = value;\n          if (value !== 0) {\n            _this.emit(REMUX_EVENTS.DETECT_LARGE_GAP, 'audio', value);\n          }\n        },\n        get: function get() {\n          return _this.___audioLargeGap || 0;\n        }\n      }\n    });\n    this.audioUnsyncTime = 0;\n  }\n\n  _createClass(Compatibility, [{\n    key: 'init',\n    value: function init() {\n      this.before(REMUX_EVENTS.REMUX_MEDIA, this.doFix.bind(this));\n    }\n  }, {\n    key: 'reset',\n    value: function reset() {\n      this.nextAudioDts = null; // 估算下一段音频数据的dts\n      this.nextVideoDts = null; // 估算下一段视频数据的dts\n\n      this.lastAudioSamplesLen = 0; // 上一段音频数据的长度\n      this.lastVideoSamplesLen = 0; // 上一段视频数据的长度\n\n      this.lastVideoDts = undefined; // 上一段音频数据的dts\n      this.lastAudioDts = undefined; // 上一段视频数据的dts\n\n      // this.allAudioSamplesCount = 0 // 音频总数据量(原始帧)\n      // this.allVideoSamplesCount = 0 // 视频总数据量(原始帧)\n\n      this._audioLargeGap = 0;\n      this._videoLargeGap = 0;\n\n      // this._firstAudioSample = null\n      // this._firstVideoSample = null\n      // this._firstAudioSample = null\n      // this._firstVideoSample = null\n      this.videoLastSample = null;\n      this.audioLastSample = null;\n\n      this.filledAudioSamples = []; // 补充音频帧（）\n      this.filledVideoSamples = []; // 补充视频帧（）\n\n      this.audioUnsyncTime = 0;\n    }\n  }, {\n    key: '_isSegmentsContinuous',\n    value: function _isSegmentsContinuous() {\n      return this._lastSegmentId === 0 || this._currentSegmentId - this._lastSegmentId === 1;\n    }\n  }, {\n    key: 'doFix',\n    value: function doFix() {\n      var ops = void 0;\n      var vSamp0 = void 0;\n      var aSamp0 = void 0;\n      var avDelta = 0;\n      if (this.videoTrack.samples.length) {\n        vSamp0 = this.videoTrack.samples[0];\n        ops = vSamp0.options;\n        if (logger.long) {\n          logger.log(this.TAG, this.videoTrack.samples.slice());\n        }\n      }\n\n      if (this.audioTrack.samples.length) {\n        aSamp0 = this.audioTrack.samples[0];\n        if (logger.long) {\n          logger.log(this.TAG, this.audioTrack.samples.slice());\n        }\n      }\n\n      if (vSamp0 && aSamp0) {\n        avDelta = aSamp0.dts - vSamp0.dts;\n      }\n\n      // eslint-disable-next-line no-mixed-operators\n      this._currentSegmentId = ops && ops.id || this._currentSegmentId + 1;\n\n      logger.log(this.TAG, 'lastSeg:' + this._lastSegmentId + ' , currentSeg:' + this._currentSegmentId + ', discontinue:' + (ops && ops.discontinue) + ' vSamp0:' + (vSamp0 && vSamp0.dts) + ' aSamp0:' + (aSamp0 && aSamp0.dts));\n\n      var _getFirstSample = this.getFirstSample(),\n          isFirstAudioSamples = _getFirstSample.isFirstAudioSamples,\n          isFirstVideoSamples = _getFirstSample.isFirstVideoSamples;\n\n      this.recordSamplesCount();\n\n      if (this._firstVideoSample) {\n        this.fixVideoRefSampleDuration(this.videoTrack.meta, this.videoTrack.samples);\n      }\n\n      var _Compatibility$detect = Compatibility.detectChangeStream(this.videoTrack.samples, isFirstVideoSamples),\n          videoChanged = _Compatibility$detect.changed,\n          videoChangedIdxes = _Compatibility$detect.changedIdxes;\n\n      if (videoChanged) {\n        var disContinue = false;\n        for (var i = 0; i < videoChangedIdxes.length; i++) {\n          if (this.fixChangeStreamVideo(videoChangedIdxes[i], isFirstVideoSamples)) {\n            disContinue = true;\n          }\n        }\n        if (!disContinue) {\n          this.doFixVideo(isFirstVideoSamples);\n        }\n      } else {\n        if (!this._isSegmentsContinuous() && ops && ops.start !== undefined) {\n          this.videoLastSample = null;\n          var start = ops.start;\n          // id 不连续时考虑上av之间的差值\n          if (avDelta < 0) {\n            start -= avDelta;\n          }\n          logger.log(this.TAG, 'fix video for _isSegmentsContinuous()， delta:', avDelta);\n          this.doFixVideo(isFirstVideoSamples, start);\n          this.emit(REMUX_EVENTS.DETECT_FRAG_ID_DISCONTINUE, ops.start / 1000);\n        } else {\n          this.doFixVideo(isFirstVideoSamples);\n        }\n      }\n\n      this._appendSampleForLastSegment(ops && ops.isLast);\n\n      var _Compatibility$detect2 = Compatibility.detectChangeStream(this.audioTrack.samples, isFirstAudioSamples),\n          audioChanged = _Compatibility$detect2.changed,\n          audioChangedIdxes = _Compatibility$detect2.changedIdxes;\n\n      if (audioChanged) {\n        var _disContinue = false;\n        for (var _i = 0; _i < audioChangedIdxes.length; _i++) {\n          if (this.fixChangeStreamAudio(audioChangedIdxes[_i], isFirstAudioSamples)) {\n            _disContinue = true;\n          }\n        }\n        if (!_disContinue) {\n          this.doFixAudio(isFirstAudioSamples);\n        } else {\n          return;\n        }\n      } else {\n        if (!this._isSegmentsContinuous() && ops && ops.start !== undefined) {\n          logger.log(this.TAG, 'fix audio for _isSegmentsContinuous()');\n          var sam0 = this.audioTrack.samples[0];\n          this.nextAudioDts = ops.start || sam0 && sam0.dts;\n          this.doFixAudio(isFirstAudioSamples, ops.start);\n          this.emit(REMUX_EVENTS.DETECT_FRAG_ID_DISCONTINUE, ops.start / 1000);\n        } else {\n          this.doFixAudio(isFirstAudioSamples);\n        }\n      }\n\n      this.removeInvalidSamples();\n\n      this._lastSegmentId = this._currentSegmentId;\n    }\n  }, {\n    key: 'doFixVideo',\n    value: function doFixVideo(first, streamChangeStart) {\n      var _videoTrack = this.videoTrack,\n          videoSamples = _videoTrack.samples,\n          meta = _videoTrack.meta;\n\n      var len = videoSamples.length;\n\n      for (var i = 0; i < len; i++) {\n        var sample = videoSamples[i];\n        sample.originDts = sample.dts;\n        sample.originPts = sample.pts;\n      }\n\n      if (!videoSamples || !len || !this._firstVideoSample) {\n        return;\n      }\n\n      var firstSample = videoSamples[0];\n\n      logger.log(this.TAG, 'doFixVideo:: lastVideoDts: ' + this.lastVideoDts + ' ,  _videoLargeGap: ' + this._videoLargeGap + ' ,streamChangeStart:' + streamChangeStart + ', lastVideoSample:[dts=' + (this.videoLastSample && this.videoLastSample.dts) + ' , pts=' + (this.videoLastSample && this.videoLastSample.pts) + '] ,  firstDTS:' + firstSample.dts + ' ,firstPTS:' + firstSample.pts + ' ,lastDTS:' + videoSamples[len - 1].dts + ' , lastPTS: ' + videoSamples[len - 1].pts);\n\n      if (!first && streamChangeStart === undefined && this.videoLastSample && Compatibility.detectVideoLargeGap(this.videoLastSample ? this.videoLastSample.dts : 0, firstSample.dts + this._videoLargeGap)) {\n        // large gap 不准确，出现了非换流场景的时间戳跳变\n        this._videoLargeGap = this.videoLastSample.dts + meta.refSampleDuration - firstSample.dts;\n      }\n      // step0.修复hls流出现巨大gap，需要强制重定位的问题。\n      if (this._videoLargeGap !== 0) {\n        Compatibility.doFixLargeGap(videoSamples, this._videoLargeGap);\n        if (this._videoLargeGap !== this.preVideoGap) {\n          this.preVideoGap = this._videoLargeGap;\n          this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM_DISCONTINUE, 'video', { prevDts: this.videoLastSample && this.videoLastSample.originDts, curDts: firstSample.originDts });\n        }\n      }\n\n      if (!first && streamChangeStart !== undefined && streamChangeStart !== 0) {\n        this._videoLargeGap = streamChangeStart - firstSample.dts;\n        Compatibility.doFixLargeGap(videoSamples, this._videoLargeGap);\n      }\n\n      // step1. 修复与audio首帧差距太大的问题\n      if (first && this._firstAudioSample) {\n        var videoFirstDts = this._firstVideoSample.originDts;\n        var audioFirstDts = this._firstAudioSample.dts;\n        var gap = videoFirstDts - audioFirstDts;\n        if (gap > 2 * meta.refSampleDuration && gap < 10 * meta.refSampleDuration) {\n          var fillCount = Math.floor(gap / meta.refSampleDuration);\n\n          for (var _i2 = 0; _i2 < fillCount; _i2++) {\n            var clonedFirstSample = Object.assign({}, firstSample); // 视频头部帧缺失需要复制第一帧\n            // 重新计算sample的dts和pts\n            clonedFirstSample.dts = videoFirstDts - (_i2 + 1) * meta.refSampleDuration;\n            clonedFirstSample.pts = clonedFirstSample.dts + clonedFirstSample.cts;\n\n            videoSamples.unshift(clonedFirstSample);\n\n            this.filledVideoSamples.push({\n              dts: clonedFirstSample.dts,\n              size: clonedFirstSample.data.byteLength\n            });\n          }\n          this._firstVideoSample = this.filledVideoSamples[0] || this._firstVideoSample;\n        } else if (Math.abs(gap) > 2 * meta.refSampleDuration && !this._videoLargeGap) {\n          this._videoLargeGap = -1 * gap;\n          Compatibility.doFixLargeGap(videoSamples, -1 * gap);\n        }\n      }\n\n      // 分片中间时间戳跳变\n      var segLen = videoSamples.length;\n      for (var _i3 = 1; _i3 < segLen; _i3++) {\n        var c = videoSamples[_i3];\n        var pre = videoSamples[_i3 - 1];\n        var cts = c.dts - c.pts;\n        if (Math.abs(cts) < 2000) {\n          // 单帧 dts、pts差距不大\n          if (Math.abs(c.dts - pre.dts) > 10000) {\n            c.dts = pre.dts + meta.refSampleDuration;\n            c.pts = pre.pts + meta.refSampleDuration;\n          }\n        }\n      }\n\n      var curLastSample = videoSamples.pop();\n      if (videoSamples.length) {\n        videoSamples[videoSamples.length - 1].duration = curLastSample.dts - videoSamples[videoSamples.length - 1].dts;\n      }\n\n      // 分片 < 4帧,不能起播的\n      if (segLen < 4) {\n        var _sample = videoSamples[videoSamples.length - 1];\n        _sample = _sample || curLastSample;\n        var duration = _sample.options && _sample.options.duration;\n        var refDuration = meta.refSampleDuration;\n        if (duration && refDuration && duration / refDuration > 5) {\n          var pts = _sample.pts;\n          var dts = _sample.dts;\n          for (var _i4 = 0; _i4 < 3; _i4++) {\n            dts += refDuration;\n            pts += refDuration;\n            var sam = Object.assign({}, _sample, { dts: dts, pts: pts });\n            if (_i4 === 2) {\n              // 最后一帧拉长duration\n              sam.duration = duration;\n            }\n            videoSamples.push(sam);\n          }\n        }\n        curLastSample = null;\n      }\n\n      if (this.videoLastSample) {\n        var videoLastSample = this.videoLastSample;\n        videoLastSample.duration = firstSample.dts - videoLastSample.dts;\n        videoSamples.unshift(this.videoLastSample);\n      }\n\n      // videoSamples.forEach((sample, idx) => {\n      //   if (idx !== 0 && idx !== videoSamples.length - 1) {\n      //     const pre = videoSamples[idx - 1];\n      //     const next = videoSamples[idx + 1];\n      //     if (sample.dts - pre.dts < 5) {\n      //       sample.dts = (pre.dts + next.dts) / 2\n      //       sample.pts = (pre.pts + next.pts) / 2\n      //     }\n      //   }\n      // })\n\n      this.videoLastSample = curLastSample;\n      if (videoSamples[videoSamples.length - 1]) {\n        this.lastVideoDts = videoSamples[videoSamples.length - 1].dts;\n      }\n      this.videoTrack.samples = videoSamples;\n    }\n  }, {\n    key: '_appendSampleForLastSegment',\n    value: function _appendSampleForLastSegment(isLast) {\n      if (isLast && this.videoLastSample) {\n        this.videoTrack.samples.push(this.videoLastSample);\n      }\n    }\n  }, {\n    key: 'doFixAudio',\n    value: function doFixAudio(first, streamChangeStart) {\n      var _this2 = this;\n\n      var _audioTrack = this.audioTrack,\n          audioSamples = _audioTrack.samples,\n          meta = _audioTrack.meta;\n\n\n      if (!audioSamples || !audioSamples.length) {\n        return;\n      }\n\n      this.fixAudioRefSampleDuration(meta);\n\n      for (var i = 0, len = audioSamples.length; i < len; i++) {\n        var sample = audioSamples[i];\n        sample.originDts = sample.dts;\n      }\n\n      // console.log(`audio lastSample, ${audioSamples[audioSamples.length - 1].dts}`)\n\n      var samplesLen = audioSamples.length;\n      var silentFrame = AAC.getSilentFrame(meta.originCodec, meta.channelCount);\n      var iRefSampleDuration = Math.floor(meta.refSampleDuration);\n\n      var firstSample = this._firstAudioSample;\n\n      var _firstSample = audioSamples[0];\n\n      logger.log(this.TAG, 'doFixAudio:: audioDtsBase:' + this.audioDtsBase + ' ,  _audioLargeGap: ' + this._audioLargeGap + ', streamChangeStart:' + streamChangeStart + ' ,  nextAudioDts:' + this.nextAudioDts + ',  audio: firstDTS:' + _firstSample.dts + ' ,firstPTS:' + _firstSample.pts + ' ,lastDTS:' + audioSamples[samplesLen - 1].dts + ' , lastPTS: ' + audioSamples[samplesLen - 1].pts);\n\n      if (!first && this.nextAudioDts === null && _firstSample.options && _firstSample.options.start) {\n        if (streamChangeStart !== undefined) {\n          streamChangeStart = _firstSample.options.start;\n        }\n      }\n\n      if (!first && streamChangeStart === undefined && this.nextAudioDts && Compatibility.detectAudioLargeGap(this.nextAudioDts || 0, _firstSample.dts + this._audioLargeGap)) {\n        // large gap 不准确，出现了非换流场景的时间戳跳变\n        var _audioLargeGap = this.nextAudioDts - _firstSample.dts;\n        this._audioLargeGap = Math.abs(_audioLargeGap - this._videoLargeGap) < 200 ? this._videoLargeGap : _audioLargeGap;\n      }\n\n      // 对audioSamples按照dts做排序\n      if (this._audioLargeGap !== 0) {\n        Compatibility.doFixLargeGap(audioSamples, this._audioLargeGap);\n        if (this._audioLargeGap !== this.preAudioGap) {\n          this.preAudioGap = this._audioLargeGap;\n          this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM_DISCONTINUE, 'audio', { prevDts: this.lastAudioOriginDts, curDts: _firstSample.originDts });\n        }\n      } else if (!first && (streamChangeStart !== undefined || Compatibility.detectAudioLargeGap(this.nextAudioDts, _firstSample.dts))) {\n        if (streamChangeStart !== undefined && streamChangeStart !== 0) {\n          this.nextAudioDts = streamChangeStart; // FIX: Hls中途切codec，在如果直接seek到后面的点会导致largeGap计算失败\n        }\n        this._audioLargeGap = this.nextAudioDts - _firstSample.dts;\n\n        if (_firstSample.options.start && !_firstSample.options.start.isContinue) {\n          Compatibility.doFixLargeGap(audioSamples, this._audioLargeGap);\n        }\n      }\n      // step0. 首帧与video首帧间距大的问题\n      if (this._firstVideoSample && first) {\n        var videoFirstPts = this._firstVideoSample.originDts || this._firstVideoSample.dts;\n        var _gap = firstSample.dts - videoFirstPts;\n\n        if (_gap === this._videoLargeGap) {\n          // already fixed by doFixVideo\\\n        } else if (_gap > meta.refSampleDuration && _gap < 10 * meta.refSampleDuration) {\n          var silentSampleCount = Math.floor((firstSample.dts - videoFirstPts) / meta.refSampleDuration);\n          logger.warn(this.TAG, 'fill ' + silentSampleCount + ' frames for av align');\n          for (var _i5 = 0; _i5 < silentSampleCount; _i5++) {\n            var silentSample = {\n              data: silentFrame,\n              datasize: silentFrame.byteLength,\n              dts: firstSample.dts - (_i5 + 1) * meta.refSampleDuration,\n              filtered: 0\n            };\n\n            audioSamples.unshift(silentSample);\n\n            this.filledAudioSamples.push({\n              dts: silentSample.dts,\n              size: silentSample.data.byteLength\n            });\n          }\n          this._firstAudioSample = this.filledAudioSamples[0] || this._firstAudioSample;\n        } else if (_gap < -1 * meta.refSampleDuration) {\n          this._audioLargeGap = -1 * _gap;\n          Compatibility.doFixLargeGap(audioSamples, -1 * _gap);\n        }\n      }\n\n      var gap = void 0;\n      var firstDts = audioSamples[0].dts;\n\n      if (this.nextAudioDts) {\n        // step1. 处理samples段之间的丢帧情况\n        // 当发现duration差距大于1帧时进行补帧\n        gap = firstDts - this.nextAudioDts;\n        var absGap = Math.abs(gap);\n\n        if (gap >= iRefSampleDuration && gap < 10000 && silentFrame) {\n          var silentFrameCount = Math.ceil(gap / iRefSampleDuration);\n\n          for (var _i6 = 0; _i6 < silentFrameCount; _i6++) {\n            var computed = firstDts - (_i6 + 1) * iRefSampleDuration;\n            var _silentSample = {\n              dts: computed > this.nextAudioDts ? computed : this.nextAudioDts,\n              pts: computed > this.nextAudioDts ? computed : this.nextAudioDts,\n              datasize: silentFrame.byteLength,\n              filtered: 0,\n              data: silentFrame\n            };\n\n            this.filledAudioSamples.push({\n              dts: _silentSample.dts,\n              size: _silentSample.data.byteLength\n            });\n            this.audioTrack.samples.unshift(_silentSample);\n            _firstSample = _silentSample;\n          }\n          this.emit(REMUX_EVENTS.DETECT_AUDIO_GAP, gap, silentFrameCount);\n        } else if (absGap < meta.refSampleDuration && absGap > 0) {\n          // 当差距比较小的时候将音频帧重定位\n          // console.log('重定位音频帧dts', audioSamples[0].dts, this.nextAudioDts)\n          _firstSample.dts = this.nextAudioDts;\n          _firstSample.pts = this.nextAudioDts;\n        } else if (gap < 0 && absGap < iRefSampleDuration) {\n          Compatibility.doFixLargeGap(audioSamples, -1 * gap);\n          this.emit(REMUX_EVENTS.DETECT_AUDIO_OVERLAP, gap);\n        }\n      }\n\n      // 分片内采样间补帧\n      var nextDts = audioSamples[0].dts + iRefSampleDuration;\n      for (var _i7 = 1; _i7 < audioSamples.length;) {\n        var _sample2 = audioSamples[_i7];\n        var delta = _sample2.dts - nextDts;\n        if (delta <= -1 * iRefSampleDuration) {\n          logger.warn('drop 1 audio sample for ' + delta + ' ms overlap');\n          audioSamples.splice(_i7, 1);\n          continue;\n        }\n        if (delta >= 10 * iRefSampleDuration) {\n          var missingCount = Math.round(delta / iRefSampleDuration);\n          if (missingCount > 1000) {\n            break;\n          }\n          logger.warn(this.TAG, 'inject ' + missingCount + ' audio frame for ' + delta + ' ms gap, index=' + _i7);\n          for (var j = 0; j < missingCount; j++) {\n            var _silentSample2 = {\n              data: silentFrame,\n              datasize: silentFrame.byteLength,\n              dts: nextDts,\n              originDts: nextDts,\n              filtered: 0\n            };\n            audioSamples.splice(_i7, 0, _silentSample2);\n            nextDts += iRefSampleDuration;\n            _i7++;\n          }\n          _sample2.dts = _sample2.pts = _sample2.originDts = nextDts;\n          nextDts += iRefSampleDuration;\n          _i7++;\n        } else {\n          _sample2.dts = _sample2.pts = _sample2.originDts = nextDts;\n          nextDts += iRefSampleDuration;\n          _i7++;\n        }\n      }\n\n      var unSyncDuration = meta.refSampleDuration - iRefSampleDuration;\n      audioSamples.forEach(function (sample, idx) {\n        if (idx !== 0) {\n          var _lastSample = audioSamples[idx - 1];\n          sample.dts = sample.pts = _lastSample.dts + _lastSample.duration;\n        }\n        sample.duration = iRefSampleDuration;\n        _this2.audioUnsyncTime = _this2.audioUnsyncTime + unSyncDuration;\n        if (_this2.audioUnsyncTime >= 1) {\n          sample.duration += 1;\n          _this2.audioUnsyncTime -= 1;\n        }\n      });\n\n      var lastSample = audioSamples[audioSamples.length - 1];\n      this.lastAudioDts = lastSample.dts;\n      var lastDuration = lastSample.duration;\n      // const lastSampleDuration = audioSamples.length >= 2 ? lastOriginDts - audioSamples[audioSamples.length - 2].originDts : meta.refSampleDuration\n\n      this.lastAudioSamplesLen = samplesLen;\n      this.nextAudioDts = this.lastAudioDts + (lastDuration || iRefSampleDuration);\n      this.lastAudioOriginDts = lastSample.originDts;\n\n      this.audioTrack.samples = Compatibility.sortAudioSamples(audioSamples);\n    }\n  }, {\n    key: 'fixChangeStreamVideo',\n    value: function fixChangeStreamVideo(changeIdx) {\n      logger.log(this.TAG, 'fixChangeStreamVideo(), changeIdx=', changeIdx);\n      var samples = this.videoTrack.samples;\n\n      var prevDts = changeIdx === 0 ? this.lastVideoDts ? this.lastVideoDts : this.getStreamChangeStart(samples[0]) : samples[changeIdx - 1].dts;\n      var curDts = samples[changeIdx].dts;\n      var isContinue = Math.abs(prevDts - curDts) <= 10000;\n      this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM, 'video', curDts);\n      if (isContinue) {\n        if (!samples[changeIdx].options) {\n          samples[changeIdx].options = {\n            isContinue: true\n          };\n        } else {\n          samples[changeIdx].options.isContinue = true;\n        }\n        return false;\n      }\n\n      this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM_DISCONTINUE, 'video', { prevDts: prevDts, curDts: curDts });\n\n      var firstPartSamples = samples.slice(0, changeIdx);\n      var secondPartSamples = samples.slice(changeIdx);\n      var changeSample = samples[changeIdx];\n\n      var streamChangeStart = void 0;\n\n      this._videoLargeGap = 0;\n      this.videoLastSample = null;\n      this.lastVideoDts = null;\n      if (changeSample.options && changeSample.options.start !== undefined) {\n        streamChangeStart = changeSample.options.start;\n      } else {\n        streamChangeStart = prevDts - this.videoDtsBase;\n      }\n\n      this.videoTrack.samples = samples.slice(0, changeIdx);\n\n      this.doFixVideo(false);\n\n      this.videoTrack.samples = samples.slice(changeIdx);\n\n      this.doFixVideo(false, streamChangeStart);\n\n      this.videoTrack.samples = firstPartSamples.concat(secondPartSamples);\n\n      return true;\n    }\n  }, {\n    key: 'fixChangeStreamAudio',\n    value: function fixChangeStreamAudio(changeIdx) {\n      logger.log(this.TAG, 'fixChangeStreamAudio(), changeIdx=', changeIdx);\n      var samples = this.audioTrack.samples;\n\n\n      var prevDts = changeIdx === 0 ? this.lastAudioDts : samples[changeIdx - 1].dts;\n      var curDts = samples[changeIdx].dts;\n      var isContinue = Math.abs(prevDts - curDts) <= 10000;\n      this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM, 'audio', curDts);\n      if (isContinue) {\n        if (!samples[changeIdx].options) {\n          samples[changeIdx].options = {\n            isContinue: true\n          };\n        } else {\n          samples[changeIdx].options.isContinue = true;\n        }\n        return false;\n      }\n      this.emit(REMUX_EVENTS.DETECT_CHANGE_STREAM_DISCONTINUE, 'audio', { prevDts: prevDts, curDts: curDts });\n      this._audioLargeGap = 0;\n      var cacheNextAudioDts = this.nextAudioDts;\n      this.nextAudioDts = null;\n      var firstPartSamples = samples.slice(0, changeIdx);\n      var secondPartSamples = samples.slice(changeIdx);\n      var changeSample = samples[changeIdx];\n\n      var streamChangeStart = void 0;\n      if (changeSample.options && changeSample.options.start !== undefined) {\n        streamChangeStart = changeSample.options.start;\n      } else {\n        streamChangeStart = cacheNextAudioDts;\n        changeSample.options.isContinue = true;\n      }\n\n      this.audioTrack.samples = firstPartSamples;\n\n      this.doFixAudio(false);\n\n      this.audioTrack.samples = secondPartSamples;\n\n      this.doFixAudio(false, streamChangeStart);\n\n      this.audioTrack.samples = firstPartSamples.concat(secondPartSamples);\n\n      return true;\n    }\n  }, {\n    key: 'getFirstSample',\n    value: function getFirstSample() {\n      // 获取video和audio的首帧数据\n      var videoSamples = this.videoTrack.samples;\n      var audioSamples = this.audioTrack.samples;\n\n\n      var isFirstVideoSamples = false;\n      var isFirstAudioSamples = false;\n\n      if (!this._firstVideoSample && videoSamples.length) {\n        this._firstVideoSample = Compatibility.findFirstVideoSample(videoSamples);\n        this.removeInvalidSamples();\n        isFirstVideoSamples = true;\n      }\n\n      if (!this._firstAudioSample && audioSamples.length) {\n        this._firstAudioSample = Compatibility.findFirstAudioSample(audioSamples); // 寻找dts最小的帧作为首个音频帧\n        this.removeInvalidSamples();\n        isFirstAudioSamples = true;\n      }\n\n      return {\n        isFirstVideoSamples: isFirstVideoSamples,\n        isFirstAudioSamples: isFirstAudioSamples\n      };\n    }\n\n    /**\n     * 在没有refSampleDuration的问题流中，\n     */\n\n  }, {\n    key: 'fixVideoRefSampleDuration',\n    value: function fixVideoRefSampleDuration(meta, samples) {\n      if (!meta) {\n        return;\n      }\n      var allSamplesCount = this.allVideoSamplesCount;\n      var firstDts = this._firstVideoSample.dts;\n      var filledSamplesCount = this.filledVideoSamples.length;\n      if (!Compatibility.isRefSampleDurationValid(meta.refSampleDuration)) {\n        if (samples.length >= 1) {\n          var lastDts = samples[samples.length - 1].dts;\n\n          var fixed = Math.floor((lastDts - firstDts) / (allSamplesCount + filledSamplesCount - 1)); // 将refSampleDuration重置为计算后的平均值\n\n          if (Compatibility.isRefSampleDurationValid(fixed)) {\n            meta.refSampleDuration = fixed;\n          }\n        }\n      } else if (meta.refSampleDuration) {\n        if (samples.length >= 5) {\n          var _lastDts = samples[samples.length - 1].dts;\n          var _firstDts = samples[0].dts;\n          var durationAvg = (_lastDts - _firstDts) / (samples.length - 1);\n          if (durationAvg > 0 && durationAvg < 1000) {\n            var _fixed = Math.floor(Math.abs(meta.refSampleDuration - durationAvg) <= 5 ? meta.refSampleDuration : durationAvg); // 将refSampleDuration重置为计算后的平均值\n            if (Compatibility.isRefSampleDurationValid(_fixed)) {\n              meta.refSampleDuration = _fixed;\n            }\n          }\n        }\n      }\n\n      if (!Compatibility.isRefSampleDurationValid(meta.refSampleDuration)) {\n        meta.refSampleDuration = 66;\n      }\n    }\n  }, {\n    key: 'fixAudioRefSampleDuration',\n    value: function fixAudioRefSampleDuration(meta) {\n      if (!meta) {\n        return;\n      }\n      meta.refSampleDuration = meta.timescale * 1024 / meta.sampleRate;\n    }\n\n    /**\n     * 记录截止目前一共播放了多少帧\n     */\n\n  }, {\n    key: 'recordSamplesCount',\n    value: function recordSamplesCount() {\n      var audioTrack = this.audioTrack,\n          videoTrack = this.videoTrack;\n\n\n      this.allAudioSamplesCount += audioTrack.samples.length;\n      this.allVideoSamplesCount += videoTrack.samples.length;\n    }\n\n    /**\n     * 去除不合法的帧（倒退、重复帧）\n     */\n\n  }, {\n    key: 'removeInvalidSamples',\n    value: function removeInvalidSamples() {\n      var firstAudioSample = this.audioTrack.samples[0];\n      var firstVideoSample = this.videoTrack.samples[0];\n      // const { _firstVideoSample, _firstAudioSample } = this\n\n      if (firstAudioSample) {\n        this.audioTrack.samples = this.audioTrack.samples.filter(function (sample, index) {\n          if (sample === firstAudioSample) {\n            return true;\n          }\n          return sample.dts >= firstAudioSample.dts;\n        });\n      }\n\n      if (firstVideoSample) {\n        this.videoTrack.samples = this.videoTrack.samples.filter(function (sample, index) {\n          if (sample === firstVideoSample) {\n            return true;\n          }\n          return sample.dts >= firstVideoSample.dts;\n        });\n      }\n    }\n  }, {\n    key: 'getStreamChangeStart',\n    value: function getStreamChangeStart(sample) {\n      if (sample.options && sample.options.start) {\n        return sample.options.start - this.dtsBase;\n      }\n      return Infinity;\n    }\n  }, {\n    key: 'tracks',\n    get: function get() {\n      return this._context.getInstance('TRACKS');\n    }\n  }, {\n    key: 'audioTrack',\n    get: function get() {\n      if (this.tracks && this.tracks.audioTrack) {\n        return this.tracks.audioTrack;\n      }\n      return {\n        samples: [],\n        meta: {}\n      };\n    }\n  }, {\n    key: 'videoTrack',\n    get: function get() {\n      if (this.tracks && this.tracks.videoTrack) {\n        return this.tracks.videoTrack;\n      }\n      return {\n        samples: [],\n        meta: {}\n      };\n    }\n  }, {\n    key: 'dtsBase',\n    get: function get() {\n      var remuxer = this._context.getInstance('MP4_REMUXER');\n      if (remuxer) {\n        return remuxer._dtsBase;\n      }\n      return 0;\n    }\n  }, {\n    key: 'audioDtsBase',\n    get: function get() {\n      var remuxer = this._context.getInstance('MP4_REMUXER');\n      if (remuxer && remuxer._audioDtsBase !== null) {\n        return remuxer._audioDtsBase;\n      }\n\n      return this.dtsBase;\n    }\n  }, {\n    key: 'videoDtsBase',\n    get: function get() {\n      var remuxer = this._context.getInstance('MP4_REMUXER');\n      if (remuxer && remuxer._videoDtsBase !== null) {\n        return remuxer._videoDtsBase;\n      }\n\n      return this.dtsBase;\n    }\n  }], [{\n    key: 'sortAudioSamples',\n    value: function sortAudioSamples(samples) {\n      if (samples.length === 1) {\n        return samples;\n      }\n\n      return [].concat(_toConsumableArray(samples)).sort(function (a, b) {\n        return a.dts - b.dts;\n      });\n    }\n  }, {\n    key: 'isRefSampleDurationValid',\n    value: function isRefSampleDurationValid(refSampleDuration) {\n      return refSampleDuration && refSampleDuration > 0 && !Number.isNaN(refSampleDuration);\n    }\n    /**\n     * 寻找dts最小的sample\n     * @param samples\n     */\n\n  }, {\n    key: 'findFirstAudioSample',\n    value: function findFirstAudioSample(samples) {\n      if (!samples || samples.length === 0) {\n        return null;\n      }\n\n      return Compatibility.sortAudioSamples(samples)[0];\n    }\n  }, {\n    key: 'findFirstVideoSample',\n    value: function findFirstVideoSample(samples) {\n      if (!samples.length) {\n        return null;\n      }\n\n      var sorted = [].concat(_toConsumableArray(samples)).sort(function (a, b) {\n        return a.dts - b.dts;\n      });\n\n      for (var i = 0, len = sorted.length; i < len; i++) {\n        if (sorted[i].isKeyframe) {\n          return sorted[i];\n        }\n      }\n    }\n  }, {\n    key: 'detectVideoLargeGap',\n    value: function detectVideoLargeGap(nextDts, firstSampleDts) {\n      if (nextDts === null) {\n        return;\n      }\n      var delta = 1000;\n      return nextDts - firstSampleDts >= delta || firstSampleDts - nextDts >= delta; // fix hls流出现大量流dts间距问题\n    }\n  }, {\n    key: 'detectAudioLargeGap',\n    value: function detectAudioLargeGap(nextDts, firstSampleDts) {\n      if (nextDts === null) {\n        return;\n      }\n      return nextDts - firstSampleDts >= 1000 || firstSampleDts - nextDts >= 1000; // fix hls流出现大量流dts间距问题\n    }\n  }, {\n    key: 'doFixLargeGap',\n    value: function doFixLargeGap(samples, gap) {\n      // console.log('fix large gap...... ', gap)\n      for (var i = 0, len = samples.length; i < len; i++) {\n        var sample = samples[i];\n        sample.dts += gap;\n        if (sample.pts) {\n          sample.pts += gap;\n        }\n      }\n      var first = samples[0];\n      if (first && first.dts === 0) {\n        first.dts = first.pts = 1;\n      }\n    }\n\n    /**\n     * 中途换流\n     *         |-------------------frag2---------------|\n     * | frag1 | -----sample 0~n -------sample n+1 ~ m |\n     *\n     * 换流可能开始于新分片的第一帧 或者分片中间\n     *\n     */\n\n  }, {\n    key: 'detectChangeStream',\n    value: function detectChangeStream(samples, isFirst) {\n      var changed = false;\n      var changedIdxes = [];\n      for (var i = 0, len = samples.length; i < len; i++) {\n        var sample = samples[i];\n        if (sample.options && sample.options.meta && !(isFirst && i === 0)) {\n          changed = true;\n          changedIdxes.push(i);\n          // break;\n        }\n      }\n\n      return {\n        changed: changed,\n        changedIdxes: changedIdxes\n      };\n    }\n  }]);\n\n  return Compatibility;\n}();\n\nexport default Compatibility;","'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n  , prefix = '~';\n\n/**\n * Constructor to create a storage for our `EE` objects.\n * An `Events` instance is a plain object whose properties are event names.\n *\n * @constructor\n * @private\n */\nfunction Events() {}\n\n//\n// We try to not inherit from `Object.prototype`. In some engines creating an\n// instance in this way is faster than calling `Object.create(null)` directly.\n// If `Object.create(null)` is not supported we prefix the event names with a\n// character to make sure that the built-in object properties are not\n// overridden or used as an attack vector.\n//\nif (Object.create) {\n  Events.prototype = Object.create(null);\n\n  //\n  // This hack is needed because the `__proto__` property is still inherited in\n  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.\n  //\n  if (!new Events().__proto__) prefix = false;\n}\n\n/**\n * Representation of a single event listener.\n *\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} [once=false] Specify if the listener is a one-time listener.\n * @constructor\n * @private\n */\nfunction EE(fn, context, once) {\n  this.fn = fn;\n  this.context = context;\n  this.once = once || false;\n}\n\n/**\n * Add a listener for a given event.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} once Specify if the listener is a one-time listener.\n * @returns {EventEmitter}\n * @private\n */\nfunction addListener(emitter, event, fn, context, once) {\n  if (typeof fn !== 'function') {\n    throw new TypeError('The listener must be a function');\n  }\n\n  var listener = new EE(fn, context || emitter, once)\n    , evt = prefix ? prefix + event : event;\n\n  if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;\n  else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);\n  else emitter._events[evt] = [emitter._events[evt], listener];\n\n  return emitter;\n}\n\n/**\n * Clear event by name.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} evt The Event name.\n * @private\n */\nfunction clearEvent(emitter, evt) {\n  if (--emitter._eventsCount === 0) emitter._events = new Events();\n  else delete emitter._events[evt];\n}\n\n/**\n * Minimal `EventEmitter` interface that is molded against the Node.js\n * `EventEmitter` interface.\n *\n * @constructor\n * @public\n */\nfunction EventEmitter() {\n  this._events = new Events();\n  this._eventsCount = 0;\n}\n\n/**\n * Return an array listing the events for which the emitter has registered\n * listeners.\n *\n * @returns {Array}\n * @public\n */\nEventEmitter.prototype.eventNames = function eventNames() {\n  var names = []\n    , events\n    , name;\n\n  if (this._eventsCount === 0) return names;\n\n  for (name in (events = this._events)) {\n    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);\n  }\n\n  if (Object.getOwnPropertySymbols) {\n    return names.concat(Object.getOwnPropertySymbols(events));\n  }\n\n  return names;\n};\n\n/**\n * Return the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Array} The registered listeners.\n * @public\n */\nEventEmitter.prototype.listeners = function listeners(event) {\n  var evt = prefix ? prefix + event : event\n    , handlers = this._events[evt];\n\n  if (!handlers) return [];\n  if (handlers.fn) return [handlers.fn];\n\n  for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {\n    ee[i] = handlers[i].fn;\n  }\n\n  return ee;\n};\n\n/**\n * Return the number of listeners listening to a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Number} The number of listeners.\n * @public\n */\nEventEmitter.prototype.listenerCount = function listenerCount(event) {\n  var evt = prefix ? prefix + event : event\n    , listeners = this._events[evt];\n\n  if (!listeners) return 0;\n  if (listeners.fn) return 1;\n  return listeners.length;\n};\n\n/**\n * Calls each of the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Boolean} `true` if the event had listeners, else `false`.\n * @public\n */\nEventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {\n  var evt = prefix ? prefix + event : event;\n\n  if (!this._events[evt]) return false;\n\n  var listeners = this._events[evt]\n    , len = arguments.length\n    , args\n    , i;\n\n  if (listeners.fn) {\n    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);\n\n    switch (len) {\n      case 1: return listeners.fn.call(listeners.context), true;\n      case 2: return listeners.fn.call(listeners.context, a1), true;\n      case 3: return listeners.fn.call(listeners.context, a1, a2), true;\n      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;\n      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;\n      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;\n    }\n\n    for (i = 1, args = new Array(len -1); i < len; i++) {\n      args[i - 1] = arguments[i];\n    }\n\n    listeners.fn.apply(listeners.context, args);\n  } else {\n    var length = listeners.length\n      , j;\n\n    for (i = 0; i < length; i++) {\n      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);\n\n      switch (len) {\n        case 1: listeners[i].fn.call(listeners[i].context); break;\n        case 2: listeners[i].fn.call(listeners[i].context, a1); break;\n        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;\n        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;\n        default:\n          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {\n            args[j - 1] = arguments[j];\n          }\n\n          listeners[i].fn.apply(listeners[i].context, args);\n      }\n    }\n  }\n\n  return true;\n};\n\n/**\n * Add a listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.on = function on(event, fn, context) {\n  return addListener(this, event, fn, context, false);\n};\n\n/**\n * Add a one-time listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.once = function once(event, fn, context) {\n  return addListener(this, event, fn, context, true);\n};\n\n/**\n * Remove the listeners of a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn Only remove the listeners that match this function.\n * @param {*} context Only remove the listeners that have this context.\n * @param {Boolean} once Only remove one-time listeners.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {\n  var evt = prefix ? prefix + event : event;\n\n  if (!this._events[evt]) return this;\n  if (!fn) {\n    clearEvent(this, evt);\n    return this;\n  }\n\n  var listeners = this._events[evt];\n\n  if (listeners.fn) {\n    if (\n      listeners.fn === fn &&\n      (!once || listeners.once) &&\n      (!context || listeners.context === context)\n    ) {\n      clearEvent(this, evt);\n    }\n  } else {\n    for (var i = 0, events = [], length = listeners.length; i < length; i++) {\n      if (\n        listeners[i].fn !== fn ||\n        (once && !listeners[i].once) ||\n        (context && listeners[i].context !== context)\n      ) {\n        events.push(listeners[i]);\n      }\n    }\n\n    //\n    // Reset the array, or remove it completely if we have no more listeners.\n    //\n    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;\n    else clearEvent(this, evt);\n  }\n\n  return this;\n};\n\n/**\n * Remove all listeners, or those of the specified event.\n *\n * @param {(String|Symbol)} [event] The event name.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {\n  var evt;\n\n  if (event) {\n    evt = prefix ? prefix + event : event;\n    if (this._events[evt]) clearEvent(this, evt);\n  } else {\n    this._events = new Events();\n    this._eventsCount = 0;\n  }\n\n  return this;\n};\n\n//\n// Alias methods names because people roll like that.\n//\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.addListener = EventEmitter.prototype.on;\n\n//\n// Expose the prefix.\n//\nEventEmitter.prefixed = prefix;\n\n//\n// Allow `EventEmitter` to be imported as module namespace.\n//\nEventEmitter.EventEmitter = EventEmitter;\n\n//\n// Expose the module.\n//\nif ('undefined' !== typeof module) {\n  module.exports = EventEmitter;\n}\n","var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nimport EventEmitter from 'eventemitter3';\nimport { logger } from 'xgplayer-helper-utils';\nimport { XGDataView, AudioTrackMeta, VideoTrackMeta, AudioSample, VideoSample } from 'xgplayer-helper-models';\nimport { ADTS, avc, hevc } from 'xgplayer-helper-codec';\n\n/**\n * @typedef {import('xgplayer-helper-models').TsFrag } TsFrag\n */\n/**\n * @typedef {import('xgplayer-helper-models').Buffer } Buffer\n */\nvar NalUnit = avc.NalUnit;\nvar NalUnitHEVC = hevc.NalUnitHEVC;\n\nvar StreamType = {\n  0x01: ['video', 'MPEG-1'],\n  0x02: ['video', 'MPEG-2'],\n  0x1b: ['video', 'AVC.H264'],\n  0x24: ['video', 'HVC.H265'],\n  0xea: ['video', 'VC-1'],\n  0x03: ['audio', 'MPEG-1'],\n  0x04: ['audio', 'MPEG-2'],\n  0x0f: ['audio', 'MPEG-2.AAC'],\n  0x11: ['audio', 'MPEG-4.AAC'],\n  0x80: ['audio', 'LPCM'],\n  0x81: ['audio', 'AC3'],\n  0x06: ['audio', 'AC3'],\n  0x82: ['audio', 'DTS'],\n  0x83: ['audio', 'Dolby TrueHD'],\n  0x84: ['audio', 'AC3-Plus'],\n  0x85: ['audio', 'DTS-HD'],\n  0x86: ['audio', 'DTS-MA'],\n  0xa1: ['audio', 'AC3-Plus-SEC'],\n  0xa2: ['audio', 'DTS-HD-SEC']\n};\n\nvar TsDemuxer = function (_EventEmitter) {\n  _inherits(TsDemuxer, _EventEmitter);\n\n  _createClass(TsDemuxer, null, [{\n    key: 'EVENTS',\n    get: function get() {\n      return {\n        DEMUX_COMPLETE: 'DEMUX_COMPLETE',\n        METADATA_PARSED: 'METADATA_PARSED',\n        VIDEO_SAMPLE_PARSED: 'VIDEO_SAMPLE_PARSED',\n        AUDIO_SAMPLE_PARSED: 'AUDIO_SAMPLES_PARSED',\n        SEI_PARSED: 'SEI_PARSED'\n      };\n    }\n\n    /**\n     * @param {any} videoTrack\n     * @param {any} audioTrack\n     */\n\n  }]);\n\n  function TsDemuxer(_ref) {\n    var videoTrack = _ref.videoTrack,\n        audioTrack = _ref.audioTrack;\n\n    _classCallCheck(this, TsDemuxer);\n\n    var _this = _possibleConstructorReturn(this, (TsDemuxer.__proto__ || Object.getPrototypeOf(TsDemuxer)).call(this));\n\n    _this.TAG = 'TsDemuxer';\n    _this.demuxing = false;\n    _this.videoTrack = videoTrack;\n    _this.audioTrack = audioTrack;\n    _this.pat = [];\n    _this.pmt = [];\n    _this._hasVideoMeta = false;\n    _this._hasAudioMeta = false;\n    _this.gopId = 0;\n    return _this;\n  }\n\n  /**\n   *\n   * @param {TsFrag} frag ts fragment parsed from m3u8\n   * @param {Buffer} buffer u8a-buffer\n   * @param {boolean} isVod is a vod m3u8\n   */\n\n\n  _createClass(TsDemuxer, [{\n    key: 'demux',\n    value: function demux(frag, buffer, isVod) {\n      if (frag) {\n        logger.log(this.TAG, 'do demux: id=' + frag.id + ',demuxing=' + this.demuxing);\n      }\n      if (this.demuxing) {\n        return;\n      }\n\n      var frags = { pat: [], pmt: [] };\n      var peses = {};\n      while (buffer.length >= 188) {\n        if (buffer.length >= 1 && buffer.array[0][buffer.offset] !== 71) {\n          throw new Error('Untrust sync code: ' + buffer.array[0][buffer.offset] + ', try to recover;');\n        }\n        while (buffer.length >= 1 && buffer.array[0][buffer.offset] !== 71) {\n          buffer.shift(1);\n        }\n        if (buffer.length < 188) {\n          continue;\n        }\n        var buf = buffer.shift(188);\n        // console.log(buf);\n        var tsStream = new XGDataView(buf.buffer);\n        var ts = {};\n        TsDemuxer.read(tsStream, ts, frags);\n        var pes = peses[ts.header.pid];\n        if (ts.pes) {\n          ts.pes.codec = ts.header.codec;\n          ts.pes.streamType = ts.header.streamType;\n          if (!peses[ts.header.pid]) {\n            peses[ts.header.pid] = [];\n          }\n          peses[ts.header.pid].push(ts.pes);\n          ts.pes.ES.buffer = [ts.pes.ES.buffer];\n        } else if (pes) {\n          pes[pes.length - 1].ES.buffer.push(ts.payload.stream);\n        }\n      }\n\n      var AudioOptions = Object.assign({}, frag);\n      var VideoOptions = Object.assign({}, frag);\n\n      var noAudio = isVod && this._hasVideoMeta && !this._hasAudioMeta;\n      var noVideo = isVod && this._hasAudioMeta && !this._hasVideoMeta;\n\n      // Get Frames data\n      for (var i = 0; i < Object.keys(peses).length; i++) {\n        var epeses = peses[Object.keys(peses)[i]];\n        for (var j = 0; j < epeses.length; j++) {\n          var cPes = epeses[j];\n          cPes.id = Object.keys(peses)[i];\n\n          // 1. !noAudio 首片无音频,后续分片当无音频处理\n          // 2. cPes.streamType === 0x0f || cPes.streamType === 0x11 只处理aac,其他音频格式当无音频\n          var isAAC = cPes.streamType === 0x0f || cPes.streamType === 0x11;\n          if (cPes.type === 'audio' && !noAudio && isAAC) {\n            cPes.ES.buffer = TsDemuxer.mergeAudioES(cPes.ES.buffer);\n            this.pushAudioSample(cPes, AudioOptions);\n            AudioOptions = {};\n          } else if (cPes.type === 'video' && !noVideo) {\n            cPes.ES.buffer = TsDemuxer.mergeVideoES(cPes.ES.buffer);\n            if (cPes.codec === 'HVC.H265') {\n              this.pushVideoSampleHEVC(epeses[j], VideoOptions);\n            } else {\n              this.pushVideoSample(epeses[j], VideoOptions);\n            }\n            VideoOptions = { spsFound: !!VideoOptions.spsFound };\n          }\n        }\n      }\n    }\n  }, {\n    key: 'pushAudioSample',\n    value: function pushAudioSample(pes, options) {\n      var meta = new AudioTrackMeta({\n        audioSampleRate: pes.ES.frequence,\n        sampleRate: pes.ES.frequence,\n        channelCount: pes.ES.channel,\n        codec: 'mp4a.40.' + pes.ES.audioObjectType,\n        originCodec: 'mp4a.40.' + pes.ES.originAudioObjectType,\n        originObjectType: pes.ES.originAudioObjectType,\n        config: pes.ES.audioConfig,\n        id: 2,\n        sampleRateIndex: pes.ES.frequencyIndex\n      });\n      meta.refSampleDuration = Math.floor(1024 / meta.audioSampleRate * meta.timescale);\n\n      var metaEqual = TsDemuxer.compareMeta(this.audioTrack.meta, meta, true);\n\n      if (!this._hasAudioMeta || !metaEqual) {\n        this._hasAudioMeta = true;\n        if (options) {\n          options.meta = Object.assign({}, meta);\n        } else {\n          options = {\n            meta: Object.assign({}, meta)\n          };\n        }\n        this.emit(TsDemuxer.EVENTS.METADATA_PARSED, 'audio', meta);\n      }\n\n      var frameIndex = 0;\n      pes.ES.buffer.skip(pes.pesHeaderLength + 9);\n      var streamChanged = false;\n      while (pes.ES.buffer.position < pes.ES.buffer.length) {\n        if (ADTS.isHeader(new Uint8Array(pes.ES.buffer.buffer), pes.ES.buffer.position) && pes.ES.buffer.position + 5 < pes.ES.buffer.length) {\n          var frame = ADTS.appendFrame(this.audioTrack.meta.sampleRate, new Uint8Array(pes.ES.buffer.buffer), pes.ES.buffer.position, pes.pts, frameIndex);\n          if (frame && frame.sample) {\n            // logger.log(`${Math.round(frame.sample.pts)} : AAC`);\n            pes.ES.buffer.skip(frame.length);\n            var sample = new AudioSample({\n              dts: frame.sample.dts,\n              pts: frame.sample.pts,\n              data: frame.sample.unit,\n              options: streamChanged ? {} : options\n            });\n            if (options.meta) {\n              streamChanged = true;\n            }\n            sample.dts = sample.pts = Math.ceil(sample.pts / 90);\n            this.emit(TsDemuxer.EVENTS.AUDIO_SAMPLE_PARSED, sample);\n            frameIndex++;\n          } else {\n            // logger.log('Unable to parse AAC frame');\n            break;\n          }\n        } else {\n          // nothing found, keep looking\n          pes.ES.buffer.skip(1);\n        }\n      }\n    }\n  }, {\n    key: 'pushVideoSample',\n    value: function pushVideoSample(pes, options) {\n      var _this2 = this;\n\n      var nals = NalUnit.getNalunits(pes.ES.buffer);\n      var meta = new VideoTrackMeta();\n      var spsFound = options.spsFound; // 保存当前分片内是否解析过sps\n      var sampleLength = 0;\n      var sps = false;\n      var pps = false;\n      var seiList = [];\n      for (var i = 0; i < nals.length; i++) {\n        var nal = nals[i];\n        if (nal.type < 9 && !nal.sei) {\n          sampleLength += 4 + nal.body.byteLength;\n        }\n        if (nal.sps) {\n          sps = nal;\n          meta.sps = nal.body;\n          meta.chromaFormat = sps.sps.chroma_format;\n          meta.codec = 'avc1.';\n          for (var j = 1; j < 4; j++) {\n            var h = sps.body[j].toString(16);\n            if (h.length < 2) {\n              h = '0' + h;\n            }\n            meta.codec += h;\n          }\n          meta.codecHeight = sps.sps.codec_size.height;\n          meta.codecWidth = sps.sps.codec_size.width;\n          meta.frameRate = sps.sps.frame_rate;\n          meta.id = 1;\n          meta.level = sps.sps.level_string;\n          meta.presentHeight = sps.sps.present_size.height;\n          meta.presentWidth = sps.sps.present_size.width;\n          meta.profile = sps.sps.profile_string;\n          meta.refSampleDuration = Math.floor(meta.timescale * (sps.sps.frame_rate.fps_den / sps.sps.frame_rate.fps_num));\n          meta.sarRatio = sps.sps.sar_ratio ? sps.sps.sar_ratio : sps.sps.par_ratio;\n        } else if (nal.pps) {\n          meta.pps = nal.body;\n          pps = nal;\n        } else if (nal.sei) {\n          seiList.push(nal.sei);\n        }\n      }\n\n      if (sps && pps) {\n        meta.avcc = NalUnit.getAvcc(sps.body, pps.body);\n        var metaEqual = TsDemuxer.compareMeta(this.videoTrack.meta, meta, true);\n        if (!this._hasVideoMeta || !metaEqual) {\n          if (options) {\n            options.meta = Object.assign({}, meta);\n          } else {\n            options = {\n              meta: Object.assign({}, meta)\n            };\n          }\n          if (!spsFound) {\n            this.emit(TsDemuxer.EVENTS.METADATA_PARSED, 'video', meta);\n          }\n          options.spsFound = true;\n          this._hasVideoMeta = true;\n        }\n      }\n\n      var data = new Uint8Array(sampleLength);\n      var offset = 0;\n      var isKeyframe = false;\n      for (var _i = 0; _i < nals.length; _i++) {\n        var _nal = nals[_i];\n        if (_nal.type && _nal.type >= 9) {\n          continue;\n        }\n        var length = _nal.body.byteLength;\n        if (_nal.idr) {\n          isKeyframe = true;\n        }\n        if (!_nal.sei) {\n          data.set(new Uint8Array([length >>> 24 & 0xff, length >>> 16 & 0xff, length >>> 8 & 0xff, length & 0xff]), offset);\n          offset += 4;\n          data.set(_nal.body, offset);\n          offset += length;\n        }\n      }\n      var dts = parseInt(pes.dts / 90);\n      var pts = parseInt(pes.pts / 90);\n\n      if (seiList.length) {\n        seiList.forEach(function (sei) {\n          sei.dts = dts;\n          _this2.emit(TsDemuxer.EVENTS.SEI_PARSED, sei);\n        });\n      }\n      var sample = new VideoSample({\n        dts: dts,\n        pts: pts,\n        cts: pts - dts,\n        originDts: pes.dts,\n        purePts: pes.purePts,\n        isKeyframe: isKeyframe,\n        data: data,\n        nals: nals,\n        options: options,\n        firstInGop: isKeyframe,\n        gopId: isKeyframe ? ++this.gopId : this.gopId\n      });\n      this.emit(TsDemuxer.EVENTS.VIDEO_SAMPLE_PARSED, sample);\n    }\n  }, {\n    key: 'pushVideoSampleHEVC',\n    value: function pushVideoSampleHEVC(pes, options) {\n      var _this3 = this;\n\n      var nals = NalUnitHEVC.getNalunits(pes.ES.buffer);\n      nals = nals.filter(function (x) {\n        return x.body && x.body.length;\n      });\n      var meta = new VideoTrackMeta();\n      meta.streamType = 0x24;\n\n      var sampleLength = 0;\n      var vps = false;\n      var sps = false;\n      var pps = false;\n      var seiList = [];\n      var hasVPS = false;\n      var hasSPS = false;\n      var hasPPS = false;\n      var firstInGop = false;\n      for (var i = 0; i < nals.length; i++) {\n        var nal = nals[i];\n\n        if (nal.vps) {\n          if (hasVPS) {\n            continue;\n          } else {\n            hasVPS = true;\n          }\n        } else if (nal.sps) {\n          if (hasSPS) {\n            continue;\n          } else {\n            hasSPS = true;\n          }\n        } else if (nal.pps) {\n          if (hasPPS) {\n            continue;\n          } else {\n            hasPPS = true;\n          }\n        } else if (nal.key) {\n          if (nal.type === 20 || nal.type === 19) {\n            firstInGop = true;\n          }\n        } else if (nal.type === 0) {\n          // if (!hasKeyframe) {\n          //   continue;\n          // }\n        } else if (nal.type === 35) {\n          continue;\n        }\n        if (nal.sps) {\n          sps = nal;\n          meta.sps = nal.body;\n\n          meta.presentWidth = sps.sps.width;\n          meta.presentHeight = sps.sps.height;\n          meta.general_profile_space = sps.sps.general_profile_space;\n          meta.general_tier_flag = sps.sps.general_tier_flag;\n          meta.general_profile_idc = sps.sps.general_profile_idc;\n          meta.general_level_idc = sps.sps.general_level_idc;\n          // meta.duration = this._duration;\n          meta.codec = 'hev1.1.6.L93.B0';\n          meta.chromaFormatIdc = sps.sps.chromaFormatIdc;\n          meta.bitDepthLumaMinus8 = sps.sps.bitDepthLumaMinus8;\n          meta.bitDepthChromaMinus8 = sps.sps.bitDepthChromaMinus8;\n        } else if (nal.pps) {\n          meta.pps = nal.body;\n          pps = nal;\n        } else if (nal.vps) {\n          meta.vps = nal.body;\n          vps = nal;\n        } else if (nal.sei) {\n          seiList.push(nal.sei);\n        }\n        if (nal.type <= 40) {\n          sampleLength += 4 + nal.body.byteLength;\n        }\n      }\n\n      if (sps && pps && vps) {\n        // meta.avcc = NalUnitHEVC.getAvcc(sps.body, pps.body);\n        var metaEqual = TsDemuxer.compareMeta(this.videoTrack.meta, meta, true);\n        if (!this._hasVideoMeta || !metaEqual) {\n          if (options) {\n            options.meta = Object.assign({}, meta);\n          } else {\n            options = {\n              meta: Object.assign({}, meta)\n            };\n          }\n          meta.streamType = 0x24;\n          this.videoTrack.meta = meta;\n          this._hasVideoMeta = true;\n          this.emit(TsDemuxer.EVENTS.METADATA_PARSED, 'video', meta);\n        }\n      }\n\n      var data = new Uint8Array(sampleLength);\n      var offset = 0;\n      var isKeyframe = false;\n      hasVPS = false;\n      hasSPS = false;\n      hasPPS = false;\n      for (var _i2 = 0; _i2 < nals.length; _i2++) {\n        var _nal2 = nals[_i2];\n        if (_nal2.type && _nal2.type > 40) {\n          continue;\n        }\n\n        if (_nal2.vps) {\n          if (hasVPS) {\n            continue;\n          } else {\n            hasVPS = true;\n          }\n        } else if (_nal2.sps) {\n          if (hasSPS) {\n            continue;\n          } else {\n            hasSPS = true;\n          }\n        } else if (_nal2.pps) {\n          if (hasPPS) {\n            continue;\n          } else {\n            hasPPS = true;\n          }\n        } else if (_nal2.key) {} else if (_nal2.type === 0) {\n          // if (!hasKeyframe) {\n          //   continue;\n          // }\n        } else if (_nal2.type === 35) {\n          continue;\n        }\n        var length = _nal2.body.byteLength;\n        if (_nal2.key) {\n          isKeyframe = true;\n        }\n        // if (!nal.vps && !nal.pps && !nal.sps) {\n        data.set(new Uint8Array([length >>> 24 & 0xff, length >>> 16 & 0xff, length >>> 8 & 0xff, length & 0xff]), offset);\n        offset += 4;\n        data.set(_nal2.body, offset);\n        offset += length;\n        // }\n      }\n      var dts = parseInt(pes.dts / 90);\n      var pts = parseInt(pes.pts / 90);\n\n      if (seiList) {\n        seiList.forEach(function (sei) {\n          sei.dts = dts;\n          _this3.emit(TsDemuxer.EVENTS.SEI_PARSED, sei);\n        });\n      }\n\n      var sample = new VideoSample({\n        dts: dts,\n        pts: pts,\n        cts: pts - dts,\n        originDts: pes.dts,\n        purePts: pes.purePts,\n        isKeyframe: isKeyframe,\n        data: data,\n        nals: nals,\n        options: options,\n        firstInGop: firstInGop,\n        gopId: firstInGop ? ++this.gopId : this.gopId\n      });\n      this.emit(TsDemuxer.EVENTS.VIDEO_SAMPLE_PARSED, sample);\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this.removeAllListeners();\n      this.configs = {};\n      this.demuxing = false;\n      this.pat = [];\n      this.pmt = [];\n      this._hasVideoMeta = false;\n      this._hasAudioMeta = false;\n    }\n  }], [{\n    key: 'compareArray',\n    value: function compareArray(a, b, type) {\n      var al = 0;\n      var bl = 0;\n      if (type === 'Uint8Array') {\n        al = a.byteLength;\n        bl = b.byteLength;\n      } else if (type === 'Array') {\n        al = a.length;\n        bl = b.length;\n      }\n      if (al !== bl) {\n        return false;\n      }\n\n      for (var i = 0; i < al; i++) {\n        if (a[i] !== b[i]) {\n          return false;\n        }\n      }\n      return true;\n    }\n  }, {\n    key: 'compareMeta',\n    value: function compareMeta(a, b, ignoreDuration) {\n      if (!a || !b) {\n        return false;\n      }\n\n      for (var i = 0, k = Object.keys(a).length; i < k; i++) {\n        var itema = a[Object.keys(a)[i]];\n        var itemb = b[Object.keys(a)[i]];\n        if (!itema && !itemb) {\n          return true;\n        }\n\n        if ((itema === undefined || itema === null) && itemb || itema && itemb === undefined) {\n          return false;\n        }\n\n        if ((typeof itema === 'undefined' ? 'undefined' : _typeof(itema)) !== 'object') {\n          if (ignoreDuration && Object.keys(a)[i] !== 'duration' && Object.keys(a)[i] !== 'refSampleDuration' && Object.keys(a)[i] !== 'refSampleDurationFixed' && itema !== itemb) {\n            return false;\n          }\n        } else if (itema.byteLength !== undefined) {\n          if (itemb.byteLength === undefined) {\n            return false;\n          }\n          if (!TsDemuxer.compareArray(itema, itemb, 'Uint8Array')) {\n            return false;\n          }\n        } else if (itema.length !== undefined) {\n          if (itemb.length === undefined) {\n            return false;\n          }\n          if (!TsDemuxer.compareArray(itema, itemb, 'Array')) {\n            return false;\n          }\n        } else {\n          if (!TsDemuxer.compareMeta(itema, itemb)) {\n            return false;\n          }\n        }\n      }\n      return true;\n    }\n  }, {\n    key: 'mergeVideoES',\n    value: function mergeVideoES(buffers) {\n      var data = void 0;\n      var length = 0;\n      var offset = 0;\n      for (var i = 0; i < buffers.length; i++) {\n        length += buffers[i].length - buffers[i].position;\n      }\n\n      data = new Uint8Array(length);\n      for (var _i3 = 0; _i3 < buffers.length; _i3++) {\n        var buffer = buffers[_i3];\n        data.set(new Uint8Array(buffer.buffer, buffer.position), offset);\n        offset += buffer.length - buffer.position;\n      }\n      return new XGDataView(data.buffer);\n    }\n  }, {\n    key: 'mergeAudioES',\n    value: function mergeAudioES(buffers) {\n      var data = void 0;\n      var length = 0;\n      var offset = 0;\n      for (var i = 0; i < buffers.length; i++) {\n        length += buffers[i].length;\n      }\n\n      data = new Uint8Array(length);\n      for (var _i4 = 0; _i4 < buffers.length; _i4++) {\n        var buffer = buffers[_i4];\n        data.set(new Uint8Array(buffer.buffer), offset);\n        offset += buffer.length;\n      }\n\n      return new XGDataView(data.buffer);\n    }\n  }, {\n    key: 'read',\n    value: function read(stream, ts, frags) {\n      TsDemuxer.readHeader(stream, ts);\n      TsDemuxer.readPayload(stream, ts, frags);\n      // console.log('start', window.performance.now());\n      // console.log('end', window.performance.now());\n      if (ts.header.packet === 'MEDIA' && ts.header.payload === 1 && !ts.unknownPIDs) {\n        ts.pes = TsDemuxer.PES(ts);\n      }\n    }\n  }, {\n    key: 'readPayload',\n    value: function readPayload(stream, ts, frags) {\n      var header = ts.header;\n      var pid = header.pid;\n      switch (pid) {\n        case 0:\n          TsDemuxer.PAT(stream, ts, frags);\n          break;\n        case 1:\n          TsDemuxer.CAT(stream, ts, frags);\n          break;\n        case 2:\n          TsDemuxer.TSDT(stream, ts, frags);\n          break;\n        case 0x1fff:\n          break;\n        default:\n          var isPMT = false;\n          for (var i = 0, len = frags.pat.length; i < len; i++) {\n            if (frags.pat[i].pid === pid) {\n              isPMT = true;\n              break;\n            }\n          }\n          // TODO: some的写法不太好，得改\n          if (isPMT) {\n            TsDemuxer.PMT(stream, ts, frags);\n          } else {\n            var sts = [];\n            for (var _i5 = 0, _len = frags.pmt.length; _i5 < _len; _i5++) {\n              if (frags.pmt[_i5].pid === pid) {\n                sts.push(frags.pmt[_i5]);\n                break;\n              }\n            }\n            if (sts.length > 0) {\n              var streamType = sts[0].streamType;\n              TsDemuxer.Media(stream, ts, streamType);\n            } else {\n              ts.unknownPIDs = true;\n            }\n          }\n      }\n    }\n  }, {\n    key: 'readHeader',\n    value: function readHeader(stream, ts) {\n      var header = {};\n      header.sync = stream.readUint8();\n      var next = stream.readUint16();\n      header.error = next >>> 15;\n      header.payload = next >>> 14 & 1;\n      header.priority = next >>> 13 & 1;\n      header.pid = next & 0x1fff;\n\n      next = stream.readUint8();\n\n      header.scrambling = next >> 6 & 0x3; // 是否加密，00表示不加密\n\n      /**\n       * 00 ISO/IEC未来使用保留\n       * 01 没有调整字段，仅含有184B有效净荷\n       * 02 没有有效净荷，仅含有183B调整字段\n       * 03 0~182B调整字段后为有效净荷\n       */\n      header.adaptation = next >> 4 & 0x3;\n      header.continuity = next & 15;\n      header.packet = header.pid === 0 ? 'PAT' : 'MEDIA';\n      ts.header = header;\n    }\n  }, {\n    key: 'PAT',\n    value: function PAT(stream, ts, frags) {\n      var ret = {};\n      var next = stream.readUint8();\n      stream.skip(next);\n      next = stream.readUint8();\n      ret.tabelID = next;\n      next = stream.readUint16();\n      ret.error = next >>> 7;\n      ret.zero = next >>> 6 & 1;\n      ret.sectionLength = next & 0xfff;\n      ret.streamID = stream.readUint16();\n      ret.current = stream.readUint8() & 1;\n      ret.sectionNumber = stream.readUint8();\n      ret.lastSectionNumber = stream.readUint8();\n      var N = (ret.sectionLength - 9) / 4;\n      var list = [];\n      for (var i = 0; i < N; i++) {\n        var programNumber = stream.readUint16();\n        var pid = stream.readUint16() & 0x1fff;\n        list.push({\n          program: programNumber,\n          pid: pid,\n          type: programNumber === 0 ? 'network' : 'mapPID'\n        });\n      }\n      if (list.length > 0) {\n        frags.pat = frags.pat.concat(list);\n      }\n      ret.list = list;\n      ret.program = stream.readUint16();\n      ret.pid = stream.readUint16() & 0x1fff;\n      ts.payload = ret;\n      // TODO CRC\n    }\n\n    /**\n     * ISO-13818-1 Table-2-25\n     * payload 针对 PMT:\n     *  1 字节： table id [table 第一字节]\n     *  section_length : 12bit 【table 第2字节后四位，3字节】\n     *  program_number : 16bit 【table第4，5字节】\n     *  program_info_length : 12bit 【table 第11字节后 4bit + 第12 byte】\n     *  N * 8 : descriptor\n     *    stream_type : 8bit\n     *    pid\n     *\n     * // 4 字节\n     *  reserved : 3bit\n     *  elementary_PID : 13bit\n     *  reserved : 4bit\n     *  ES_info_length: 12bit\n     */\n\n  }, {\n    key: 'PMT',\n    value: function PMT(stream, ts, frags) {\n      var header = ts.header;\n      header.packet = 'PMT';\n\n      var offset = stream.position;\n\n      offset += stream.getUint8(offset);\n\n      offset += 1; // add 1 byte for table id\n\n      var sectionLength = (stream.getUint8(offset + 1) & 0x0f) << 8 | stream.getUint8(offset + 2);\n\n      var tableEnd = offset + 3 + sectionLength - 4;\n\n      var programInfoLength = (stream.getUint8(offset + 10) & 0x0f) << 8 | stream.getUint8(offset + 11);\n\n      offset += 12 + programInfoLength;\n\n      var list = [];\n\n      while (offset < tableEnd) {\n        var pid = (stream.getUint8(offset + 1) & 0x1f) << 8 | stream.getUint8(offset + 2);\n        list.push({\n          streamType: stream.getUint8(offset),\n          pid: pid\n        });\n        offset += ((stream.getUint8(offset + 3) & 0x0f) << 8 | stream.getUint8(offset + 4)) + 5;\n      }\n      frags.pmt = list;\n      stream.skip(tableEnd + 4);\n    }\n  }, {\n    key: 'Media',\n    value: function Media(stream, ts, streamType) {\n      var header = ts.header;\n      var payload = {};\n\n      var _StreamType$streamTyp = _slicedToArray(StreamType[streamType], 2),\n          type = _StreamType$streamTyp[0],\n          codec = _StreamType$streamTyp[1];\n\n      header.streamType = streamType;\n      header.type = type;\n      header.codec = codec;\n\n      if (header.adaptation === 0x03) {\n        payload.adaptationLength = stream.readUint8();\n        if (payload.adaptationLength > 0) {\n          var next = stream.readUint8();\n          payload.discontinue = next >>> 7;\n          payload.access = next >>> 6 & 0x01;\n          payload.priority = next >>> 5 & 0x01;\n          payload.PCR = next >>> 4 & 0x01;\n          payload.OPCR = next >>> 3 & 0x01;\n          payload.splicePoint = next >>> 2 & 0x01;\n          payload.transportPrivate = next >>> 1 & 0x01;\n          payload.adaptationField = next & 0x01;\n          var _start = stream.position;\n          if (payload.PCR === 1) {\n            payload.programClockBase = stream.readUint32() << 1;\n            next = stream.readUint16();\n            payload.programClockBase |= next >>> 15;\n            payload.programClockExtension = next & 0x1ff;\n          }\n          if (payload.OPCR === 1) {\n            payload.originProgramClockBase = stream.readUint32() << 1;\n            next = stream.readUint16();\n            payload.originProgramClockBase += next >>> 15;\n            payload.originProgramClockExtension = next & 0x1ff;\n          }\n          if (payload.splicePoint === 1) {\n            payload.spliceCountdown = stream.readUint8();\n          }\n          if (payload.transportPrivate === 1) {\n            var length = stream.readUint8();\n            var transportPrivateData = [];\n            for (var i = 0; i < length; i++) {\n              transportPrivateData.push(stream.readUint8());\n            }\n          }\n          if (payload.adaptationField === 1) {\n            var _length = stream.readUint8();\n            var _next = stream.readUint8();\n            var start = stream.position;\n            var ltw = _next >>> 7;\n            var piecewise = _next >>> 6 & 0x1;\n            var seamless = _next >>> 5 & 0x1;\n            if (ltw === 1) {\n              _next = stream.readUint16();\n              payload.ltwValid = _next >>> 15;\n              payload.ltwOffset = _next & 0xefff;\n            }\n            if (piecewise === 1) {\n              _next = stream.readUint24();\n              payload.piecewiseRate = _next & 0x3fffff;\n            }\n            if (seamless === 1) {\n              _next = stream.readInt8();\n              payload.spliceType = _next >>> 4;\n              payload.dtsNextAU1 = _next >>> 1 & 0x7;\n              payload.marker1 = _next & 0x1;\n              _next = stream.readUint16();\n              payload.dtsNextAU2 = _next >>> 1;\n              payload.marker2 = _next & 0x1;\n              _next = stream.readUint16();\n              payload.dtsNextAU3 = _next;\n            }\n            stream.skip(_length - 1 - (stream.position - start));\n          }\n          var lastStuffing = payload.adaptationLength - 1 - (stream.position - _start);\n          stream.skip(lastStuffing);\n        }\n      }\n      payload.stream = new XGDataView(stream.buffer.slice(stream.position));\n      ts.payload = payload;\n    }\n\n    /**\n     * http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n     * ISO-13818-1 Table-2-17\n     * packet_start_code_prefix : 24bit 0x000001\n     * stream_id : 8bit\n     * PES_packet_length : 16bit\n     * PTS_DTS_flags : 2bit 【PES_packet_length后第2字节前2位】& 0xc0  [0x10 0x11]\n     * PES_header_data_length : 【PTS_DTS_flags 后第1字节】\n     *\n     * | 6字节header | 3字节扩展 | PES Header data | payload |\n     */\n\n  }, {\n    key: 'PES',\n    value: function PES(ts) {\n      var ret = {};\n      var buffer = ts.payload.stream;\n\n      var next = buffer.readUint24();\n      if (next !== 1) {\n        ret.ES = {};\n        ret.ES.buffer = buffer;\n      } else {\n        var streamID = buffer.readUint8();\n        if (streamID >= 0xe0 && streamID <= 0xef) {\n          ret.type = 'video';\n        }\n        if (streamID >= 0xc0 && streamID <= 0xdf) {\n          ret.type = 'audio';\n        }\n        var packetLength = buffer.readUint16();\n        ret.packetLength = packetLength;\n        if (ret.type === 'video' || ret.type === 'audio') {\n          var _next2 = buffer.readUint8();\n          var first = _next2 >>> 6;\n          if (first !== 0x02) {\n            throw new Error('error when parse pes header');\n          }\n          _next2 = buffer.readUint8();\n          ret.ptsDTSFlag = _next2 >>> 6;\n          ret.escrFlag = _next2 >>> 5 & 0x01;\n          ret.esRateFlag = _next2 >>> 4 & 0x01;\n          ret.dsmFlag = _next2 >>> 3 & 0x01;\n          ret.additionalFlag = _next2 >>> 2 & 0x01;\n          ret.crcFlag = _next2 >>> 1 & 0x01;\n          ret.extensionFlag = _next2 & 0x01;\n          ret.pesHeaderLength = buffer.readUint8();\n          var N1 = ret.pesHeaderLength;\n\n          // 计算pts\n          var pts = [];\n\n          pts.push(buffer.readUint8());\n          pts.push(buffer.readUint8());\n          pts.push(buffer.readUint8());\n          pts.push(buffer.readUint8());\n          pts.push(buffer.readUint8());\n\n          var p = (pts[0] & 0x0e) * 536870912 + // 1 << 29\n          (pts[1] & 0xff) * 4194304 + // 1 << 22\n          (pts[2] & 0xfe) * 16384 + // 1 << 14\n          (pts[3] & 0xff) * 128 + // 1 << 7\n          (pts[4] & 0xfe) / 2;\n          // 不经过任何处理的原始的pts\n          ret.purePts = p;\n          buffer.dataview.position -= 5;\n          pts = [];\n\n          _next2 = buffer.readUint8();\n          pts.push(_next2 >>> 1 & 0x07);\n          _next2 = buffer.readUint16();\n          pts.push(_next2 >>> 1);\n          _next2 = buffer.readUint16();\n          pts.push(_next2 >>> 1);\n          ret.pts = pts[0] << 30 | pts[1] << 15 | pts[2];\n          N1 -= 5;\n\n          // 视频如果没有dts用pts\n          if (ret.type === 'video') {\n            ret.dts = ret.pts;\n          }\n\n          if (ret.ptsDTSFlag === 3) {\n            var dts = [];\n            _next2 = buffer.readUint8();\n            dts.push(_next2 >>> 1 & 0x07);\n            _next2 = buffer.readUint16();\n            dts.push(_next2 >>> 1);\n            _next2 = buffer.readUint16();\n            dts.push(_next2 >>> 1);\n            ret.dts = dts[0] << 30 | dts[1] << 15 | dts[2];\n            N1 -= 5;\n          }\n\n          if (ret.escrFlag === 1) {\n            var escr = [];\n            var ex = [];\n            _next2 = buffer.readUint8();\n            escr.push(_next2 >>> 3 & 0x07);\n            escr.push(_next2 & 0x03);\n            _next2 = buffer.readUint16();\n            escr.push(_next2 >>> 13);\n            escr.push(_next2 & 0x03);\n            _next2 = buffer.readUint16();\n            escr.push(_next2 >>> 13);\n            ex.push(_next2 & 0x03);\n            _next2 = buffer.readUint8();\n            ex.push(_next2 >>> 1);\n            ret.escr = (escr[0] << 30 | escr[1] << 28 | escr[2] << 15 | escr[3] << 13 | escr[4]) * 300 + (ex[0] << 7 | ex[1]);\n            N1 -= 6;\n          }\n          if (ret.esRateFlag === 1) {\n            _next2 = buffer.readUint24();\n            ret.esRate = _next2 >>> 1 & 0x3fffff;\n            N1 -= 3;\n          }\n          if (ret.dsmFlag === 1) {\n            throw new Error('not support DSM_trick_mode');\n          }\n          if (ret.additionalFlag === 1) {\n            _next2 = buffer.readUint8();\n            ret.additionalCopyInfo = _next2 & 0x7f;\n            N1 -= 1;\n          }\n          if (ret.crcFlag === 1) {\n            ret.pesCRC = buffer.readUint16();\n            N1 -= 2;\n          }\n          if (ret.extensionFlag === 1) {\n            throw new Error('not support extension');\n          }\n          if (N1 > 0) {\n            buffer.skip(N1);\n          }\n          if (ret.dts > ret.pts) {\n            ret.dts = ret.pts;\n          }\n          ret.ES = TsDemuxer.ES(buffer, ret.type, ts.header.streamType);\n        } else {\n          throw new Error('format is not supported');\n        }\n      }\n      return ret;\n    }\n  }, {\n    key: 'ES',\n    value: function ES(buffer, type, streamType) {\n      var ret = {};\n      if (type === 'video') {\n        // TODO readnalu\n        ret.buffer = buffer;\n      } else if (type === 'audio') {\n        if (streamType === 0x0f || streamType === 0x11) {\n          ret = TsDemuxer.parseADTSHeader(buffer);\n        }\n        ret.buffer = buffer;\n      } else {\n        throw new Error('ES ' + type + ' is not supported');\n      }\n\n      return ret;\n    }\n  }, {\n    key: 'parseADTSHeader',\n    value: function parseADTSHeader(buffer) {\n      var ret = {};\n      var next = buffer.readUint16();\n      // adts的同步字节，12位\n      if (next >>> 4 !== 0xfff) {\n        throw new Error('aac ES parse Error');\n      }\n      var fq = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n      ret.id = (next >>> 3 & 0x01) === 0 ? 'MPEG-4' : 'MPEG-2';\n      ret.layer = next >>> 1 & 0x03;\n      ret.absent = next & 0x01;\n      next = buffer.readUint16();\n      ret.audioObjectType = (next >>> 14 & 0x03) + 1;\n      ret.profile = ret.audioObjectType - 1;\n      ret.frequencyIndex = next >>> 10 & 0x0f;\n      ret.frequence = fq[ret.frequencyIndex];\n      ret.channel = next >>> 6 & 0x07;\n      ret.frameLength = (next & 0x03) << 11 | buffer.readUint16() >>> 5;\n      TsDemuxer.getAudioConfig(ret);\n      buffer.skip(1);\n      ret.buffer = buffer;\n      return ret;\n    }\n  }, {\n    key: 'TSDT',\n    value: function TSDT(stream, ts, frags) {\n      // TODO\n      ts.payload = {};\n    }\n  }, {\n    key: 'CAT',\n    value: function CAT(stream, ts, frags) {\n      var ret = {};\n      ret.tableID = stream.readUint8();\n      var next = stream.readUint16();\n      ret.sectionIndicator = next >>> 7;\n      ret.sectionLength = next & 0x0fff;\n      stream.skip(2);\n      next = stream.readUint8();\n      ret.version = next >>> 3;\n      ret.currentNextIndicator = next & 0x01;\n      ret.sectionNumber = stream.readUint8();\n      ret.lastSectionNumber = stream.readUint8();\n      var N = (this.sectionLength - 9) / 4;\n      var list = [];\n      for (var i = 0; i < N; i++) {\n        list.push({});\n      }\n      ret.crc32 = stream.readUint32();\n      ts.payload = ret;\n    }\n  }, {\n    key: 'getAudioConfig',\n    value: function getAudioConfig(ret) {\n      var userAgent = navigator.userAgent.toLowerCase();\n      var config = void 0;\n      var extensionSampleIndex = void 0;\n      ret.originAudioObjectType = ret.audioObjectType;\n      if (/firefox/i.test(userAgent)) {\n        if (ret.frequencyIndex >= 8) {\n          ret.audioObjectType = 5;\n          config = new Array(4);\n          extensionSampleIndex = ret.frequencyIndex - 3;\n        } else {\n          ret.audioObjectType = 2;\n          config = new Array(2);\n          extensionSampleIndex = ret.frequencyIndex;\n        }\n      } else if (userAgent.indexOf('android') !== -1) {\n        ret.audioObjectType = 2;\n        config = new Array(2);\n        extensionSampleIndex = ret.frequencyIndex;\n      } else {\n        ret.audioObjectType = 5;\n        config = new Array(4);\n        if (ret.frequencyIndex >= 6) {\n          extensionSampleIndex = ret.frequencyIndex - 3;\n        } else {\n          if (ret.channel === 1) {\n            ret.audioObjectType = 2;\n            config = new Array(2);\n          }\n          extensionSampleIndex = ret.frequencyIndex;\n        }\n      }\n\n      config[0] = ret.audioObjectType << 3;\n      config[0] |= (ret.frequencyIndex & 0x0e) >> 1;\n      config[1] = (ret.frequencyIndex & 0x01) << 7;\n      config[1] |= ret.channel << 3;\n      if (ret.audioObjectType === 5) {\n        config[1] |= (extensionSampleIndex & 0x0e) >> 1;\n        config[2] = (extensionSampleIndex & 0x01) << 7;\n        config[2] |= 2 << 2;\n        config[3] = 0;\n      }\n\n      ret.audioConfig = config;\n    }\n  }]);\n\n  return TsDemuxer;\n}(EventEmitter);\n\nexport default TsDemuxer;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS } from 'xgplayer-helper-utils';\nimport { AudioTrack, VideoTrack } from 'xgplayer-helper-models';\nimport Demuxer from './ts-demuxer';\nvar DEMUX_EVENTS = EVENTS.DEMUX_EVENTS;\n\n/**\n * @typedef {import('xgplayer-helper-models').TsFrag} TsFrag\n */\n\nvar TsDemuxer = function () {\n  function TsDemuxer(configs) {\n    _classCallCheck(this, TsDemuxer);\n\n    this.configs = Object.assign({}, configs);\n    this.demuxer = null;\n  }\n\n  _createClass(TsDemuxer, [{\n    key: 'init',\n    value: function init() {\n      this.on(DEMUX_EVENTS.DEMUX_START, this.demux.bind(this));\n    }\n  }, {\n    key: 'initDemuxer',\n    value: function initDemuxer() {\n      this.demuxer.on(Demuxer.EVENTS.METADATA_PARSED, this.onMetaDataParsed.bind(this));\n      this.demuxer.on(Demuxer.EVENTS.VIDEO_SAMPLE_PARSED, this.onVideoSampleParsed.bind(this));\n      this.demuxer.on(Demuxer.EVENTS.AUDIO_SAMPLE_PARSED, this.onAudioSampleParsed.bind(this));\n      this.demuxer.on(Demuxer.EVENTS.SEI_PARSED, this.emit.bind(this, DEMUX_EVENTS.SEI_PARSED));\n    }\n\n    /**\n     * @param {TsFrag} frag\n     * @param {boolean} isVod\n     */\n\n  }, {\n    key: 'demux',\n    value: function demux(frag, isVod) {\n      if (!this._tracks) {\n        return;\n      }\n      if (!this._tracks.audioTrack) {\n        this._tracks.audioTrack = new AudioTrack();\n      }\n\n      if (!this._tracks.videoTrack) {\n        this._tracks.videoTrack = new VideoTrack();\n      }\n\n      if (!this.demuxer) {\n        this.demuxer = new Demuxer(this._tracks);\n        this.initDemuxer();\n      }\n      try {\n        this.demuxer.demux(frag, this.inputBuffer, isVod);\n      } catch (e) {\n        this.emit(DEMUX_EVENTS.DEMUX_ERROR, this.TAG, e, false);\n      }\n      var hasVideo = this._tracks.videoTrack && this._tracks.videoTrack.samples.length ? 1 : 0;\n      var hasAudio = this._tracks.audioTrack && this._tracks.audioTrack.samples.length ? 1 : 0;\n      this.emit(DEMUX_EVENTS.DEMUX_COMPLETE, hasVideo, hasAudio);\n    }\n  }, {\n    key: 'onMetaDataParsed',\n    value: function onMetaDataParsed(type, meta) {\n      var _tracks = this._tracks,\n          videoTrack = _tracks.videoTrack,\n          audioTrack = _tracks.audioTrack;\n\n      var track = videoTrack;\n\n      switch (type) {\n        case 'video':\n          track = videoTrack;\n          break;\n        case 'audio':\n          track = audioTrack;\n          break;\n        default:\n          track = videoTrack;\n      }\n      track.meta = meta;\n      this.emit(DEMUX_EVENTS.METADATA_PARSED, type, meta);\n    }\n  }, {\n    key: 'onVideoSampleParsed',\n    value: function onVideoSampleParsed(sample) {\n      if (sample.isKeyframe) {\n        this.emit(DEMUX_EVENTS.ISKEYFRAME, sample.pts);\n      }\n      this._tracks.videoTrack.samples.push(sample);\n    }\n  }, {\n    key: 'onAudioSampleParsed',\n    value: function onAudioSampleParsed(sample) {\n      this._tracks.audioTrack.samples.push(sample);\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      this.off(DEMUX_EVENTS.DEMUX_START, this.demux);\n      this.configs = {};\n      this.demuxer && this.demuxer.destroy();\n    }\n  }, {\n    key: 'inputBuffer',\n    get: function get() {\n      return this._context.getInstance(this.configs.inputbuffer);\n    }\n  }, {\n    key: '_tracks',\n    get: function get() {\n      return this._context.getInstance('TRACKS');\n    }\n  }]);\n\n  return TsDemuxer;\n}();\n\nexport default TsDemuxer;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { TsFrag } from 'xgplayer-helper-models';\n\nvar REGEXP_ABSOLUTE_URL = /^(?:[a-zA-Z0-9+\\-.]+:)?\\/\\//;\nvar REGEXP_URL_PAIR = /^((?:[a-zA-Z0-9+\\-.]+:)?\\/\\/[^/?#]*)?([^?#]*\\/)?/;\n\nfunction getAbsoluteUrl(url, parentUrl) {\n  if (!parentUrl || !url || REGEXP_ABSOLUTE_URL.test(url)) return url;\n  var pairs = REGEXP_URL_PAIR.exec(parentUrl);\n  if (!pairs) return url;\n  if (url[0] === '/') return pairs[1] + url;\n  return pairs[1] + pairs[2] + url;\n}\n\n/**\n * Reference: https://tools.ietf.org/html/rfc8216#section-4.3\n */\n\nvar M3U8Parser = function () {\n  function M3U8Parser() {\n    _classCallCheck(this, M3U8Parser);\n  }\n\n  _createClass(M3U8Parser, null, [{\n    key: 'parse',\n\n    /**\n     * @param {string} text\n     * @param {string} baseurl\n     * @return {{duration: number}}\n     */\n    value: function parse(text) {\n      var baseurl = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n\n      var ret = {\n        duration: 0\n      };\n      if (!text || !text.split) {\n        return;\n      }\n      var refs = text.split(/\\r|\\n/);\n      refs = refs.filter(function (ref) {\n        return ref;\n      });\n      var ref = refs.shift();\n      if (!ref.match('#EXTM3U')) {\n        throw new Error('Invalid m3u8 file: not \"#EXTM3U\"');\n      }\n      ref = refs.shift();\n      var nextDiscontinue = false;\n      var nextId = 0;\n      while (ref) {\n        var refm = ref.match(/#(.[A-Z|-]*):(.*)/);\n        var refd = ref.match(/#(.[A-Z|-]*)/);\n        if (refd && refm && refm.length > 2) {\n          switch (refm[1]) {\n            case 'EXT-X-VERSION':\n              ret.version = parseInt(refm[2]);\n              break;\n            case 'EXT-X-MEDIA-SEQUENCE':\n              ret.sequence = parseInt(refm[2]);\n              break;\n            case 'EXT-X-TARGETDURATION':\n              ret.targetduration = parseFloat(refm[2]);\n              break;\n            case 'EXTINF':\n              nextId = M3U8Parser.parseFrag(refm, refs, ret, baseurl, nextDiscontinue, nextId);\n              nextDiscontinue = false;\n              break;\n            case 'EXT-X-KEY':\n              M3U8Parser.parseDecrypt(refm[2], ret);\n              break;\n            default:\n              break;\n          }\n        }if (refd && refd.length > 1) {\n          switch (refd[1]) {\n            case 'EXT-X-DISCONTINUITY':\n              nextDiscontinue = true;\n              break;\n            case 'EXT-X-ENDLIST':\n              var last = ret.frags[ret.frags.length - 1];\n              last.isLast = true;\n              ret.end = true;\n              break;\n            default:\n              break;\n          }\n        }\n        ref = refs[nextId++];\n      }\n      return ret;\n    }\n\n    /**\n     *\n     * @param {string[]}refm\n     * @param {string[]}refs\n     * @param {*} ret\n     * @param {string} baseurl\n     * @param {boolean} discontinue\n     * @param {number} nextId\n     * @return {*}\n     */\n\n  }, {\n    key: 'parseFrag',\n    value: function parseFrag(refm, refs, ret, baseurl, discontinue, nextId) {\n      if (!ret.frags) {\n        ret.frags = [];\n      }\n\n      var frag = new TsFrag({\n        start: ret.duration,\n        duration: parseInt(parseFloat(refm[2]) * 1000)\n      });\n\n      if (frag.duration < 200) {\n        return nextId;\n      }\n\n      ret.duration += frag.duration;\n      var nextline = refs[nextId++];\n      if (nextline.match(/#(.*):(.*)/) || nextline.match(/^#/)) {\n        nextline = refs[nextId++];\n      }\n\n      frag.url = getAbsoluteUrl(nextline, baseurl);\n\n      frag.discontinue = discontinue;\n      // add id\n      if (ret.frags.length) {\n        var last = ret.frags[ret.frags.length - 1];\n        frag.id = last.id + 1;\n        frag.cc = discontinue ? last.cc + 1 : last.cc;\n      } else {\n        frag.id = ret.sequence || 1;\n        frag.cc = 0;\n      }\n      ret.frags.push(frag);\n      return nextId;\n    }\n\n    /**\n     * @param {string[]}refm\n     * @param {*} ret\n     */\n\n  }, {\n    key: 'parseDecrypt',\n    value: function parseDecrypt(refm, ret) {\n      ret.encrypt = {};\n      var refs = refm.split(',');\n      for (var i in refs) {\n        var cmd = refs[i];\n        if (cmd.match(/METHOD=(.*)/)) {\n          ret.encrypt.method = cmd.match(/METHOD=(.*)/)[1];\n        }\n        if (cmd.match(/URI=\"(.*)\"/)) {\n          ret.encrypt.uri = cmd.match(/URI=\"(.*)\"/)[1];\n        }\n\n        if (cmd.match(/IV=0x(.*)/)) {\n          var iv = cmd.match(/IV=0x(.*)/)[1];\n          var length = Math.ceil(iv.length / 2);\n          ret.encrypt.ivb = new Uint8Array(length);\n          for (var _i = length - 1; _i >= 0; _i--) {\n            var im = parseInt(iv.substr(_i * 2, 2), 16);\n            ret.encrypt.ivb[_i] = im;\n          }\n          ret.encrypt.iv = iv;\n        }\n      };\n    }\n\n    /**\n     * @param {string} url\n     * @return {boolean}\n     */\n\n  }, {\n    key: 'isHTTPS',\n    value: function isHTTPS(url) {\n      var httpsUrlRegex = /^https:\\/\\//i;\n      return httpsUrlRegex.test(url);\n    }\n  }]);\n\n  return M3U8Parser;\n}();\n\nexport default M3U8Parser;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nexports.default = function (ResultConstructor) {\n  var totalLength = 0;\n\n  for (var _len = arguments.length, arrays = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n    arrays[_key - 1] = arguments[_key];\n  }\n\n  var _iteratorNormalCompletion = true;\n  var _didIteratorError = false;\n  var _iteratorError = undefined;\n\n  try {\n    for (var _iterator = arrays[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n      var arr = _step.value;\n\n      totalLength += arr.length;\n    }\n  } catch (err) {\n    _didIteratorError = true;\n    _iteratorError = err;\n  } finally {\n    try {\n      if (!_iteratorNormalCompletion && _iterator.return) {\n        _iterator.return();\n      }\n    } finally {\n      if (_didIteratorError) {\n        throw _iteratorError;\n      }\n    }\n  }\n\n  var result = new ResultConstructor(totalLength);\n  var offset = 0;\n  var _iteratorNormalCompletion2 = true;\n  var _didIteratorError2 = false;\n  var _iteratorError2 = undefined;\n\n  try {\n    for (var _iterator2 = arrays[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n      var _arr = _step2.value;\n\n      result.set(_arr, offset);\n      offset += _arr.length;\n    }\n  } catch (err) {\n    _didIteratorError2 = true;\n    _iteratorError2 = err;\n  } finally {\n    try {\n      if (!_iteratorNormalCompletion2 && _iterator2.return) {\n        _iterator2.return();\n      }\n    } finally {\n      if (_didIteratorError2) {\n        throw _iteratorError2;\n      }\n    }\n  }\n\n  return result;\n};","'use strict';\n\nvar _concat = require('./concat');\n\nvar _concat2 = _interopRequireDefault(_concat);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nmodule.exports = _concat2.default;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport Concat from 'concat-typed-array';\n\nvar Buffer = function () {\n  function Buffer(buffer) {\n    _classCallCheck(this, Buffer);\n\n    this.buffer = buffer || new Uint8Array(0);\n  }\n\n  _createClass(Buffer, [{\n    key: 'write',\n    value: function write() {\n      var _this = this;\n\n      for (var _len = arguments.length, buffer = Array(_len), _key = 0; _key < _len; _key++) {\n        buffer[_key] = arguments[_key];\n      }\n\n      buffer.forEach(function (item) {\n        _this.buffer = Concat(Uint8Array, _this.buffer, item);\n      });\n    }\n  }], [{\n    key: 'writeUint32',\n    value: function writeUint32(value) {\n      return new Uint8Array([value >> 24, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff]);\n    }\n  }, {\n    key: 'readAsInt',\n    value: function readAsInt(arr) {\n      var temp = '';\n\n      function padStart4Hex(hexNum) {\n        var hexStr = hexNum.toString(16);\n        return hexStr.padStart(2, '0');\n      }\n\n      arr.forEach(function (num) {\n        temp += padStart4Hex(num);\n      });\n      return parseInt(temp, 16);\n    }\n  }]);\n\n  return Buffer;\n}();\n\nexport default Buffer;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport Buffer from './buffer';\n\n// const UINT32_MAX = Math.pow(2, 32) - 1;\n\nvar Fmp4 = function () {\n  function Fmp4() {\n    _classCallCheck(this, Fmp4);\n  }\n\n  _createClass(Fmp4, null, [{\n    key: 'size',\n    value: function size(value) {\n      return Buffer.writeUint32(value);\n    }\n  }, {\n    key: 'initBox',\n    value: function initBox(size, name) {\n      var buffer = new Buffer();\n\n      for (var _len = arguments.length, content = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {\n        content[_key - 2] = arguments[_key];\n      }\n\n      buffer.write.apply(buffer, [Fmp4.size(size), Fmp4.type(name)].concat(content));\n      return buffer.buffer;\n    }\n  }, {\n    key: 'extension',\n    value: function extension(version, flag) {\n      return new Uint8Array([version, flag >> 16 & 0xff, flag >> 8 & 0xff, flag & 0xff]);\n    }\n  }, {\n    key: 'ftyp',\n    value: function ftyp() {\n      return Fmp4.initBox(24, 'ftyp', new Uint8Array([0x69, 0x73, 0x6F, 0x6D, // isom,\n      0x0, 0x0, 0x00, 0x01, // minor_version: 0x01\n      0x69, 0x73, 0x6F, 0x6D, // isom\n      0x61, 0x76, 0x63, 0x31 // avc1\n      ]));\n    }\n  }, {\n    key: 'ftypHEVC',\n    value: function ftypHEVC() {\n      return Fmp4.initBox(24, 'ftyp', new Uint8Array([0x69, 0x73, 0x6F, 0x6D, // isom,\n      0x0, 0x0, 0x00, 0x01, // minor_version: 0x01\n      0x69, 0x73, 0x6F, 0x6D, // isom\n      0x64, 0x61, 0x73, 0x68 // hev1\n      ]));\n    }\n  }, {\n    key: 'moov',\n    value: function moov(_ref) {\n      var type = _ref.type,\n          meta = _ref.meta;\n\n      var size = 8;\n      var mvhd = Fmp4.mvhd(meta.duration, meta.timescale);\n      var trak = void 0;\n\n      if (type === 'video') {\n        trak = Fmp4.videoTrak(meta);\n      } else {\n        trak = Fmp4.audioTrak(meta);\n      }\n\n      var mvex = Fmp4.mvex(meta.duration, meta.timescale || 1000, meta.id);\n      [mvhd, trak, mvex].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'moov', mvhd, trak, mvex);\n    }\n  }, {\n    key: 'mvhd',\n    value: function mvhd(duration) {\n      var timescale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1000;\n\n      // duration *= timescale;\n      var bytes = new Uint8Array([0x00, 0x00, 0x00, 0x00, // version(0) + flags     1位的box版本+3位flags   box版本，0或1，一般为0。（以下字节数均按version=0）\n      0x00, 0x00, 0x00, 0x00, // creation_time    创建时间  （相对于UTC时间1904-01-01零点的秒数）\n      0x00, 0x00, 0x00, 0x00, // modification_time   修改时间\n\n      /**\n             * timescale: 4 bytes文件媒体在1秒时间内的刻度值，可以理解为1秒长度\n             */\n      timescale >>> 24 & 0xFF, timescale >>> 16 & 0xFF, timescale >>> 8 & 0xFF, timescale & 0xFF,\n\n      /**\n             * duration: 4 bytes该track的时间长度，用duration和time scale值可以计算track时长，比如audio track的time scale = 8000,\n             * duration = 560128，时长为70.016，video track的time scale = 600, duration = 42000，时长为70\n             */\n      duration >>> 24 & 0xFF, duration >>> 16 & 0xFF, duration >>> 8 & 0xFF, duration & 0xFF, 0x00, 0x01, 0x00, 0x00, // Preferred rate: 1.0   推荐播放速率，高16位和低16位分别为小数点整数部分和小数部分，即[16.16] 格式，该值为1.0（0x00010000）表示正常前向播放\n      /**\n             * PreferredVolume(1.0, 2bytes) + reserved(2bytes)\n             * 与rate类似，[8.8] 格式，1.0（0x0100）表示最大音量\n             */\n      0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //  reserved: 4 + 4 bytes保留位\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, // ----begin composition matrix----\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 视频变换矩阵   线性代数\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // ----end composition matrix----\n      0x00, 0x00, 0x00, 0x00, // ----begin pre_defined 6 * 4 bytes----\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre-defined 保留位\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ----end pre_defined 6 * 4 bytes----\n      0xFF, 0xFF, 0xFF, 0xFF // next_track_ID 下一个track使用的id号\n      ]);\n      return Fmp4.initBox(8 + bytes.length, 'mvhd', new Uint8Array(bytes));\n    }\n  }, {\n    key: 'videoTrak',\n    value: function videoTrak(data) {\n      var size = 8;\n\n      var tkhd = Fmp4.tkhd({\n        id: 1,\n        duration: data.duration,\n        timescale: data.timescale || 1000,\n        width: data.presentWidth,\n        height: data.presentHeight,\n        type: 'video'\n      });\n      var mdia = Fmp4.mdia({\n        type: 'video',\n        timescale: data.timescale || 1000,\n        duration: data.duration,\n        avcc: data.avcc,\n        parRatio: data.parRatio,\n        width: data.presentWidth,\n        height: data.presentHeight,\n        streamType: data.streamType\n      });\n      [tkhd, mdia].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'trak', tkhd, mdia);\n    }\n  }, {\n    key: 'audioTrak',\n    value: function audioTrak(data) {\n      var size = 8;\n      var tkhd = Fmp4.tkhd({\n        id: 2,\n        duration: data.duration,\n        timescale: data.timescale || 1000,\n        width: 0,\n        height: 0,\n        type: 'audio'\n      });\n      var mdia = Fmp4.mdia({\n        type: 'audio',\n        timescale: data.timescale || 1000,\n        duration: data.duration,\n        channelCount: data.channelCount,\n        samplerate: data.sampleRate,\n        config: data.config\n      });\n      [tkhd, mdia].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'trak', tkhd, mdia);\n    }\n  }, {\n    key: 'tkhd',\n    value: function tkhd(data) {\n      var id = data.id;\n      var duration = data.duration;\n      var width = data.width;\n      var height = data.height;\n      var content = new Uint8Array([0x00, 0x00, 0x00, 0x07, // version(0) + flags 1位版本 box版本，0或1，一般为0。（以下字节数均按version=0）按位或操作结果值，预定义如下：\n      // 0x000001 track_enabled，否则该track不被播放；\n      // 0x000002 track_in_movie，表示该track在播放中被引用；\n      // 0x000004 track_in_preview，表示该track在预览时被引用。\n      // 一般该值为7，1+2+4 如果一个媒体所有track均未设置track_in_movie和track_in_preview，将被理解为所有track均设置了这两项；对于hint track，该值为0\n      // hint track 这个特殊的track并不包含媒体数据，而是包含了一些将其他数据track打包成流媒体的指示信息。\n      0x00, 0x00, 0x00, 0x00, // creation_time创建时间（相对于UTC时间1904-01-01零点的秒数）\n      0x00, 0x00, 0x00, 0x00, // modification time 修改时间\n      id >>> 24 & 0xFF, // track_ID: 4 bytes id号，不能重复且不能为0\n      id >>> 16 & 0xFF, id >>> 8 & 0xFF, id & 0xFF, 0x00, 0x00, 0x00, 0x00, // reserved: 4 bytes    保留位\n      duration >>> 24 & 0xFF, // duration: 4 bytes track的时间长度\n      duration >>> 16 & 0xFF, duration >>> 8 & 0xFF, duration & 0xFF, 0x00, 0x00, 0x00, 0x00, // reserved: 2 * 4 bytes    保留位\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // layer(2bytes) + alternate_group(2bytes)  视频层，默认为0，值小的在上层.track分组信息，默认为0表示该track未与其他track有群组关系\n      0x00, 0x00, 0x00, 0x00, // volume(2bytes) + reserved(2bytes)    [8.8] 格式，如果为音频track，1.0（0x0100）表示最大音量；否则为0   +保留位\n      0x00, 0x01, 0x00, 0x00, // ----begin composition matrix----\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, // 视频变换矩阵\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // ----end composition matrix----\n      width >>> 8 & 0xFF, // //宽度\n      width & 0xFF, 0x00, 0x00, height >>> 8 & 0xFF, // 高度\n      height & 0xFF, 0x00, 0x00]);\n      return Fmp4.initBox(8 + content.byteLength, 'tkhd', content);\n    }\n  }, {\n    key: 'edts',\n    value: function edts(data) {\n      var buffer = new Buffer();\n      var duration = data.duration;\n      var mediaTime = data.mediaTime;\n      buffer.write(Fmp4.size(36), Fmp4.type('edts'));\n      // elst\n      buffer.write(Fmp4.size(28), Fmp4.type('elst'));\n      buffer.write(new Uint8Array([0x00, 0x00, 0x00, 0x01, // entry count\n      duration >> 24 & 0xff, duration >> 16 & 0xff, duration >> 8 & 0xff, duration & 0xff, mediaTime >> 24 & 0xff, mediaTime >> 16 & 0xff, mediaTime >> 8 & 0xff, mediaTime & 0xff, 0x00, 0x00, 0x00, 0x01 // media rate\n      ]));\n      return buffer.buffer;\n    }\n  }, {\n    key: 'mdia',\n    value: function mdia(data) {\n      var size = 8;\n      var mdhd = Fmp4.mdhd(data.timescale, data.duration);\n      var hdlr = Fmp4.hdlr(data.type);\n      var minf = Fmp4.minf(data);\n      [mdhd, hdlr, minf].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'mdia', mdhd, hdlr, minf);\n    }\n  }, {\n    key: 'mdhd',\n    value: function mdhd() {\n      var timescale = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1000;\n      var duration = arguments[1];\n\n      var content = new Uint8Array([0x00, 0x00, 0x00, 0x00, // creation_time    创建时间\n      0x00, 0x00, 0x00, 0x00, // modification_time修改时间\n      timescale >>> 24 & 0xFF, // timescale: 4 bytes    文件媒体在1秒时间内的刻度值，可以理解为1秒长度\n      timescale >>> 16 & 0xFF, timescale >>> 8 & 0xFF, timescale & 0xFF, duration >>> 24 & 0xFF, // duration: 4 bytes  track的时间长度\n      duration >>> 16 & 0xFF, duration >>> 8 & 0xFF, duration & 0xFF, 0x55, 0xC4, // language: und (undetermined) 媒体语言码。最高位为0，后面15位为3个字符（见ISO 639-2/T标准中定义）\n      0x00, 0x00 // pre_defined = 0\n      ]);\n      return Fmp4.initBox(12 + content.byteLength, 'mdhd', Fmp4.extension(0, 0), content);\n    }\n  }, {\n    key: 'hdlr',\n    value: function hdlr(type) {\n      var value = [0x00, // version 0\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x00, // pre_defined\n      0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n      ];\n      if (type === 'audio') {\n        value.splice.apply(value, [8, 4].concat([0x73, 0x6f, 0x75, 0x6e]));\n        value.splice.apply(value, [24, 13].concat([0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00]));\n      }\n      return Fmp4.initBox(8 + value.length, 'hdlr', new Uint8Array(value));\n    }\n  }, {\n    key: 'minf',\n    value: function minf(data) {\n      var size = 8;\n      var vmhd = data.type === 'video' ? Fmp4.vmhd() : Fmp4.smhd();\n      var dinf = Fmp4.dinf();\n      var stbl = Fmp4.stbl(data);\n      [vmhd, dinf, stbl].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'minf', vmhd, dinf, stbl);\n    }\n  }, {\n    key: 'vmhd',\n    value: function vmhd() {\n      return Fmp4.initBox(20, 'vmhd', new Uint8Array([0x00, // version\n      0x00, 0x00, 0x01, // flags\n      0x00, 0x00, // graphicsmode\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n      ]));\n    }\n  }, {\n    key: 'smhd',\n    value: function smhd() {\n      return Fmp4.initBox(16, 'smhd', new Uint8Array([0x00, // version\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, // balance\n      0x00, 0x00 // reserved\n      ]));\n    }\n  }, {\n    key: 'dinf',\n    value: function dinf() {\n      var buffer = new Buffer();\n      var dref = [0x00, // version 0\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x01, // entry_count\n      0x00, 0x00, 0x00, 0x0c, // entry_size\n      0x75, 0x72, 0x6c, 0x20, // 'url' type\n      0x00, // version 0\n      0x00, 0x00, 0x01 // entry_flags\n      ];\n      buffer.write(Fmp4.size(36), Fmp4.type('dinf'), Fmp4.size(28), Fmp4.type('dref'), new Uint8Array(dref));\n      return buffer.buffer;\n    }\n  }, {\n    key: 'stbl',\n    value: function stbl(data) {\n      var size = 8;\n      var stsd = Fmp4.stsd(data);\n      var stts = Fmp4.stts();\n      var stsc = Fmp4.stsc();\n      var stsz = Fmp4.stsz();\n      var stco = Fmp4.stco();\n      [stsd, stts, stsc, stsz, stco].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'stbl', stsd, stts, stsc, stsz, stco);\n    }\n  }, {\n    key: 'stsd',\n    value: function stsd(data) {\n      var content = void 0;\n      if (data.type === 'audio') {\n        // if (!data.isAAC && data.codec === 'mp4') {\n        //     content = FMP4.mp3(data);\n        // } else {\n        //\n        // }\n\n        // 支持mp4a\n        content = Fmp4.mp4a(data);\n      } else {\n        if (data.streamType === 0x24) {\n          content = Fmp4.hvc1(data);\n        } else {\n          content = Fmp4.avc1(data);\n        }\n      }\n      return Fmp4.initBox(16 + content.byteLength, 'stsd', Fmp4.extension(0, 0), new Uint8Array([0x00, 0x00, 0x00, 0x01]), content);\n    }\n  }, {\n    key: 'mp4a',\n    value: function mp4a(data) {\n      var content = new Uint8Array([0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // data_reference_index\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, data.channelCount, // channelcount\n      0x00, 0x10, // sampleSize:16bits\n      0x00, 0x00, 0x00, 0x00, // reserved2\n      data.samplerate >> 8 & 0xff, data.samplerate & 0xff, //\n      0x00, 0x00]);\n      var esds = Fmp4.esds(data.config);\n      return Fmp4.initBox(8 + content.byteLength + esds.byteLength, 'mp4a', content, esds);\n    }\n  }, {\n    key: 'esds',\n    value: function esds() {\n      var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [43, 146, 8, 0];\n\n      var configlen = config.length;\n      var buffer = new Buffer();\n      var content = new Uint8Array([0x00, // version 0\n      0x00, 0x00, 0x00, // flags\n\n      0x03, // descriptor_type\n      0x17 + configlen, // length\n      0x00, 0x01, // es_id\n      0x00, // stream_priority\n\n      0x04, // descriptor_type\n      0x0f + configlen, // length\n      0x40, // codec : mpeg4_audio\n      0x15, // stream_type\n      0x00, 0x00, 0x00, // buffer_size\n      0x00, 0x00, 0x00, 0x00, // maxBitrate\n      0x00, 0x00, 0x00, 0x00, // avgBitrate\n\n      0x05 // descriptor_type\n      ].concat([configlen]).concat(config).concat([0x06, 0x01, 0x02]));\n      buffer.write(Fmp4.size(8 + content.byteLength), Fmp4.type('esds'), content);\n      return buffer.buffer;\n    }\n  }, {\n    key: 'avc1',\n    value: function avc1(data) {\n      var buffer = new Buffer();\n      var size = 40; // 8(avc1)+8(avcc)+8(btrt)+16(pasp)\n      // let sps = data.sps\n      // let pps = data.pps\n      var width = data.width;\n      var height = data.height;\n      var hSpacing = data.parRatio.width;\n      var vSpacing = data.parRatio.height;\n      // let avccBuffer = new Buffer()\n      // avccBuffer.write(new Uint8Array([\n      //   0x01, // version\n      //   sps[1], // profile\n      //   sps[2], // profile compatible\n      //   sps[3], // level\n      //   0xfc | 3,\n      //   0xE0 | 1 // 目前只处理一个sps\n      // ].concat([sps.length >>> 8 & 0xff, sps.length & 0xff])))\n      // avccBuffer.write(sps, new Uint8Array([1, pps.length >>> 8 & 0xff, pps.length & 0xff]), pps)\n\n      var avcc = data.avcc;\n      var avc1 = new Uint8Array([0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // data_reference_index\n      0x00, 0x00, // pre_defined\n      0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n      width >> 8 & 0xff, width & 0xff, // width\n      height >> 8 & 0xff, height & 0xff, // height\n      0x00, 0x48, 0x00, 0x00, // horizresolution\n      0x00, 0x48, 0x00, 0x00, // vertresolution\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // frame_count\n      0x12, 0x64, 0x61, 0x69, 0x6C, // dailymotion/hls.js\n      0x79, 0x6D, 0x6F, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x68, 0x6C, 0x73, 0x2E, 0x6A, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname\n      0x00, 0x18, // depth = 24\n      0x11, 0x11]); // pre_defined = -1\n      var btrt = new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB\n      0x00, 0x2d, 0xc6, 0xc0, // maxBitrate\n      0x00, 0x2d, 0xc6, 0xc0 // avgBitrate\n      ]);\n      var pasp = new Uint8Array([hSpacing >> 24, // hSpacing\n      hSpacing >> 16 & 0xff, hSpacing >> 8 & 0xff, hSpacing & 0xff, vSpacing >> 24, // vSpacing\n      vSpacing >> 16 & 0xff, vSpacing >> 8 & 0xff, vSpacing & 0xff]);\n\n      buffer.write(Fmp4.size(size + avc1.byteLength + avcc.byteLength + btrt.byteLength), Fmp4.type('avc1'), avc1, Fmp4.size(8 + avcc.byteLength), Fmp4.type('avcC'), avcc, Fmp4.size(20), Fmp4.type('btrt'), btrt, Fmp4.size(16), Fmp4.type('pasp'), pasp);\n      return buffer.buffer;\n    }\n  }, {\n    key: 'hvc1',\n    value: function hvc1(track) {\n      var buffer = new Buffer();\n      var content = new Uint8Array([0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // data_reference_index\n      0x00, 0x00, // pre_defined\n      0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n      track.width >> 8 & 0xFF, track.width & 0xff, // width\n      track.height >> 8 & 0xFF, track.height & 0xff, // height\n      0x00, 0x48, 0x00, 0x00, // horizresolution\n      0x00, 0x48, 0x00, 0x00, // vertresolution\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // frame_count\n      0x00, 0x00, 0x00, 0x00, 0x00, // dailymotion/hls.js\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname\n      0x00, 0x18, // depth = 24\n      0xFF, 0xFF, 0x00, 0x00, 0x00, 0x7A, 0x68, 0x76, 0x63, 0x43, 0x01, // configurationVersion\n      0x01, // profile_space + tier_flag + profile_idc\n      0x60, 0x00, 0x00, 0x00, // general_profile_compatibility\n      0x90, 0x00, 0x00, 0x00, 0x00, 0x00, // constraint_indicator_flags\n      0x5D, // level_idc=90\n      0xF0, 0x00, 0xFC, 0xFD, // profile_compatibility_indications\n      0xF8, // ‘11111’b + bitDepthLumaMinus8\n      0xF8, // ‘11111’b + bitDepthChromaMinus8\n      0x00, 0x00, // avgFrameRate\n      0x0F, // constantFrameRate + numTemporalLayers + ‘1’b + lengthSizeMinusOne\n      0x03, // numOfArrays\n\n      // vps\n      0xA0, 0x00, 0x01, // array_completeness + ‘0’b + NAL_unit_type + numNalus\n      0x00, 0x18, // nalUnitLength\n      0x40, 0x01, 0x0C, 0x01, 0xFF, 0xFF, 0x01, 0x60, 0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00, 0x5D, 0x99, 0x98, 0x09,\n\n      // sps\n      0xA1, 0x00, 0x01, // array_completeness + ‘0’b + NAL_unit_type + numNalus\n      0x00, 0x2D, // nalUnitLength\n      0x42, 0x01, 0x01, 0x01, 0x60, 0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00, 0x5D, 0xA0, 0x02, 0x80, 0x80, 0x2D, 0x16, 0x59, 0x99, 0xA4, 0x93, 0x2B, 0x9A, 0x80, 0x80, 0x80, 0x82, 0x00, 0x00, 0x03, 0x00, 0x02, 0x00, 0x00, 0x03, 0x00, 0x32, 0x10,\n\n      // pps\n      0xA2, 0x00, 0x01, // array_completeness + ‘0’b + NAL_unit_type + numNalus\n      0x00, 0x07, // nalUnitLength\n      0x44, 0x01, 0xC1, 0x72, 0xB4, 0x62, 0x40]);\n      buffer.write(Fmp4.size(8 + content.byteLength + 10), Fmp4.type('hvc1'), content, Fmp4.size(10), Fmp4.type('fiel'), new Uint8Array([0x01, 0x00]));\n      return buffer.buffer;\n    }\n  }, {\n    key: 'stts',\n    value: function stts() {\n      var content = new Uint8Array([0x00, // version\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x00 // entry_count\n      ]);\n      return Fmp4.initBox(16, 'stts', content);\n    }\n  }, {\n    key: 'stsc',\n    value: function stsc() {\n      var content = new Uint8Array([0x00, // version\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x00 // entry_count\n      ]);\n      return Fmp4.initBox(16, 'stsc', content);\n    }\n  }, {\n    key: 'stco',\n    value: function stco() {\n      var content = new Uint8Array([0x00, // version\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x00 // entry_count\n      ]);\n      return Fmp4.initBox(16, 'stco', content);\n    }\n  }, {\n    key: 'stsz',\n    value: function stsz() {\n      var content = new Uint8Array([0x00, // version\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x00, // sample_size\n      0x00, 0x00, 0x00, 0x00 // sample_count\n      ]);\n      return Fmp4.initBox(20, 'stsz', content);\n    }\n  }, {\n    key: 'mvex',\n    value: function mvex(duration) {\n      var timescale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1000;\n      var trackID = arguments[2];\n\n      var buffer = new Buffer();\n      var mehd = Buffer.writeUint32(duration);\n      buffer.write(Fmp4.size(56), Fmp4.type('mvex'), Fmp4.size(16), Fmp4.type('mehd'), Fmp4.extension(0, 0), mehd, Fmp4.trex(trackID));\n      return buffer.buffer;\n    }\n  }, {\n    key: 'trex',\n    value: function trex(id) {\n      var content = new Uint8Array([0x00, // version 0\n      0x00, 0x00, 0x00, // flags\n      id >> 24, id >> 16 & 0xff, id >> 8 & 0xff, id & 0xff, // track_ID\n      0x00, 0x00, 0x00, 0x01, // default_sample_description_index\n      0x00, 0x00, 0x00, 0x00, // default_sample_duration\n      0x00, 0x00, 0x00, 0x00, // default_sample_size\n      0x00, 0x01, 0x00, 0x01 // default_sample_flags\n      ]);\n      return Fmp4.initBox(8 + content.byteLength, 'trex', content);\n    }\n  }, {\n    key: 'moof',\n    value: function moof(data) {\n      var size = 8;\n      var mfhd = Fmp4.mfhd();\n      var traf = Fmp4.traf(data);\n      [mfhd, traf].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'moof', mfhd, traf);\n    }\n  }, {\n    key: 'mfhd',\n    value: function mfhd() {\n      var content = Buffer.writeUint32(Fmp4.sequence);\n      Fmp4.sequence += 1;\n      return Fmp4.initBox(16, 'mfhd', Fmp4.extension(0, 0), content);\n    }\n  }, {\n    key: 'traf',\n    value: function traf(data) {\n      var size = 8;\n      var tfhd = Fmp4.tfhd(data.id);\n      var tfdt = Fmp4.tfdt(data.time);\n      var sdtp = Fmp4.sdtp(data);\n      var trun = Fmp4.trun(data, sdtp.byteLength);\n\n      [tfhd, tfdt, trun, sdtp].forEach(function (item) {\n        size += item.byteLength;\n      });\n      return Fmp4.initBox(size, 'traf', tfhd, tfdt, trun, sdtp);\n    }\n  }, {\n    key: 'tfhd',\n    value: function tfhd(id) {\n      var content = Buffer.writeUint32(id);\n      return Fmp4.initBox(16, 'tfhd', Fmp4.extension(0, 0), content);\n    }\n  }, {\n    key: 'tfdt',\n    value: function tfdt(time) {\n      // let upper = Math.floor(time / (UINT32_MAX + 1)),\n      //     lower = Math.floor(time % (UINT32_MAX + 1));\n      return Fmp4.initBox(16, 'tfdt', Fmp4.extension(0, 0), Buffer.writeUint32(time));\n    }\n  }, {\n    key: 'trun',\n    value: function trun(data, sdtpLength) {\n      // let id = data.id;\n      // let ceil = id === 1 ? 16 : 12;\n      var buffer = new Buffer();\n      var sampleCount = Buffer.writeUint32(data.samples.length);\n      // mdat-header 8\n      // moof-header 8\n      // mfhd 16\n      // traf-header 8\n      // thhd 16\n      // tfdt 20\n      // trun-header 12\n      // sampleCount 4\n      // data-offset 4\n      // samples.length\n      var offset = Buffer.writeUint32(8 + 8 + 16 + 8 + 16 + 16 + 12 + 4 + 4 + 16 * data.samples.length + sdtpLength);\n      buffer.write(Fmp4.size(20 + 16 * data.samples.length), Fmp4.type('trun'), new Uint8Array([0x00, 0x00, 0x0F, 0x01]), sampleCount, offset);\n\n      // let size = buffer.buffer.byteLength\n      // let writeOffset = 0\n      // data.samples.forEach(() => {\n      //   size += 16\n      // })\n      //\n      // let trunBox = new Uint8Array(size)\n\n      // trunBox.set(buffer.buffer, 0)\n\n      data.samples.forEach(function (item) {\n        var flags = item.flags;\n        // console.log(item.type, item.dts, item.duration)\n\n        buffer.write(new Uint8Array([item.duration >>> 24 & 0xFF, // sample_duration\n        item.duration >>> 16 & 0xFF, item.duration >>> 8 & 0xFF, item.duration & 0xFF, item.size >>> 24 & 0xFF, // sample_size\n        item.size >>> 16 & 0xFF, item.size >>> 8 & 0xFF, item.size & 0xFF, flags.isLeading << 2 | flags.dependsOn, // sample_flags\n        flags.isDependedOn << 6 | flags.hasRedundancy << 4 | flags.isNonSync, 0x00, 0x00, // sample_degradation_priority\n        item.cts >>> 24 & 0xFF, // sample_composition_time_offset\n        item.cts >>> 16 & 0xFF, item.cts >>> 8 & 0xFF, item.cts & 0xFF]));\n        // writeOffset += 16\n        // buffer.write(Buffer.writeUint32(0));\n      });\n      return buffer.buffer;\n    }\n  }, {\n    key: 'sdtp',\n    value: function sdtp(data) {\n      var buffer = new Buffer();\n      buffer.write(Fmp4.size(12 + data.samples.length), Fmp4.type('sdtp'), Fmp4.extension(0, 0));\n      data.samples.forEach(function (item) {\n        var flags = item.flags;\n        var num = flags.isLeading << 6 | // is_leading: 2 (bit)\n        flags.dependsOn << 4 | // sample_depends_on\n        flags.isDependedOn << 2 | // sample_is_depended_on\n        flags.hasRedundancy; // sample_has_redundancy\n\n        buffer.write(new Uint8Array([num]));\n      });\n      return buffer.buffer;\n    }\n  }, {\n    key: 'mdat',\n    value: function mdat(data) {\n      var buffer = new Buffer();\n      var size = 8;\n      data.samples.forEach(function (item) {\n        size += item.size;\n      });\n      buffer.write(Fmp4.size(size), Fmp4.type('mdat'));\n      var mdatBox = new Uint8Array(size);\n      var offset = 0;\n      mdatBox.set(buffer.buffer, offset);\n      offset += 8;\n      data.samples.forEach(function (item) {\n        item.buffer.forEach(function (unit) {\n          mdatBox.set(unit, offset);\n          offset += unit.byteLength;\n          // buffer.write(unit.data);\n        });\n      });\n      return mdatBox;\n    }\n  }]);\n\n  return Fmp4;\n}();\n\nFmp4.type = function (name) {\n  return new Uint8Array([name.charCodeAt(0), name.charCodeAt(1), name.charCodeAt(2), name.charCodeAt(3)]);\n};\nFmp4.sequence = 1;\n\nexport default Fmp4;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nimport { logger } from 'xgplayer-helper-utils';\nimport EventEmitter from 'eventemitter3';\nimport Buffer from './buffer';\nimport Fmp4 from './fmp4';\n\n/**\n * @typedef { import('xgplayer-helper-models').VideoTrack } VideoTrack\n */\n/**\n * @typedef { import('xgplayer-helper-models').AudioTrack } AudioTrack\n */\n\nvar Mp4Remuxer = function (_EventEmitter) {\n  _inherits(Mp4Remuxer, _EventEmitter);\n\n  function Mp4Remuxer(_ref) {\n    var videoMeta = _ref.videoMeta,\n        audioMeta = _ref.audioMeta,\n        curTime = _ref.curTime;\n\n    _classCallCheck(this, Mp4Remuxer);\n\n    var _this = _possibleConstructorReturn(this, (Mp4Remuxer.__proto__ || Object.getPrototypeOf(Mp4Remuxer)).call(this));\n\n    _this.TAG = 'Fmp4Remuxer';\n    _this._dtsBase = curTime * 1000;\n\n    _this._videoMeta = videoMeta;\n    _this._audioMeta = audioMeta;\n\n    _this._audioDtsBase = null;\n    _this._videoDtsBase = null;\n    _this._isDtsBaseInited = false;\n\n    _this.isFirstVideo = true;\n    _this.isFirstAudio = true;\n\n    _this.videoAllDuration = 0;\n    _this.audioAllDuration = 0;\n\n    _this.audioRemuxed = 0;\n    _this.videoRemuxed = 0;\n    _this.mp4Durations = {\n      keys: []\n    };\n    return _this;\n  }\n\n  _createClass(Mp4Remuxer, [{\n    key: 'destroy',\n    value: function destroy() {\n      this._dtsBase = -1;\n      this._isDtsBaseInited = false;\n      this.mp4Durations = {\n        keys: []\n      };\n\n      this.removeAllListeners();\n    }\n\n    /**\n     * @param {AudioTrack} audioTrack\n     * @param {VideoTrack} videoTrack\n     */\n\n  }, {\n    key: 'remux',\n    value: function remux(audioTrack, videoTrack) {\n      !this._isDtsBaseInited && this.calcDtsBase(audioTrack, videoTrack);\n      this.remuxVideo(videoTrack);\n      this.remuxAudio(audioTrack);\n\n      logger.groupEnd();\n    }\n  }, {\n    key: 'resetDtsBase',\n    value: function resetDtsBase() {\n      this._dtsBase = 0;\n    }\n  }, {\n    key: 'seek',\n    value: function seek(time) {\n      logger.log(this.TAG, 'set dtsBase for seek(),time=', time);\n      if (!this._isDtsBaseInited) {\n        this._dtsBase = time * 1000;\n      } else {\n        this._isDtsBaseInited = false;\n        this._dtsBase = time * 1000;\n      }\n\n      this._audioDtsBase = this._videoDtsBase = null;\n    }\n\n    /**\n     * @param {'video' | 'audio' } type\n     * @param {*} meta\n     * @return {Buffer}\n     */\n\n  }, {\n    key: 'remuxInitSegment',\n    value: function remuxInitSegment(type, meta) {\n      logger.log(this.TAG, 'remuxInitSegment: type=', type);\n      var initSegment = new Buffer();\n      var ftyp = meta.streamType === 0x24 ? Fmp4.ftypHEVC() : Fmp4.ftyp();\n      var moov = Fmp4.moov({ type: type, meta: meta });\n\n      initSegment.write(ftyp, moov);\n      return initSegment;\n    }\n\n    /**\n     * @param {AudioTrack} audioTrack\n     * @param {VideoTrack} videoTrack\n     */\n\n  }, {\n    key: 'calcDtsBase',\n    value: function calcDtsBase(audioTrack, videoTrack) {\n      if (!audioTrack && videoTrack.samples.length) {\n        var firstSample = videoTrack.samples[0];\n        var _start = void 0;\n        if (firstSample.options && firstSample.options.start) {\n          _start = firstSample.options.start;\n        }\n        this._videoDtsBase = firstSample.dts - (_start || this._dtsBase);\n        this._isDtsBaseInited = true;\n        return;\n      }\n\n      if ((!audioTrack || !audioTrack.samples.length) && (!videoTrack || !videoTrack.samples.length)) {\n        return;\n      }\n\n      var audioBase = null;\n      var videoBase = null;\n      var start = null;\n      if (audioTrack && audioTrack.samples && audioTrack.samples.length) {\n        var _firstSample = audioTrack.samples[0];\n        audioBase = _firstSample.dts;\n        if (_firstSample.options && _firstSample.options.start) {\n          start = _firstSample.options.start;\n        }\n      }\n      if (videoTrack && videoTrack.samples && videoTrack.samples.length) {\n        var _firstSample2 = videoTrack.samples[0];\n        videoBase = _firstSample2.dts;\n        if (_firstSample2.options && _firstSample2.options.start) {\n          start = _firstSample2.options.start;\n        }\n      }\n\n      var delta = audioBase - videoBase;\n      // 临时兼容逻辑， hls 考虑上av之间的差值\n      if (!!audioBase && delta < 0 && start !== null) {\n        videoTrack.samples.forEach(function (x) {\n          x.dts -= delta;\n          if (x.pts) {\n            x.pts -= delta;\n          }\n        });\n      }\n\n      this._videoDtsBase = (videoBase || audioBase) - (start || this._dtsBase);\n      this._audioDtsBase = (audioBase || videoBase) - (start || this._dtsBase);\n      this._dtsBase = Math.min(videoBase, audioBase);\n      this._isDtsBaseInited = true;\n\n      logger.log(this.TAG, 'calcDtsBase');\n      logger.log(this.TAG, 'video first dts: ' + videoBase + ' , start:' + start + ' , _videoDtsBase:' + this._videoDtsBase + ' , _dtsBase:' + this._dtsBase);\n      logger.log(this.TAG, 'audio first dts: ' + audioBase + ' , start:' + start + ' , _audioDtsBase:' + this._audioDtsBase + ', _dtsBase:' + this._dtsBase);\n    }\n\n    /**\n     * @param {VideoTrack}videoTrack\n     * @return {*}\n     * @private\n     */\n\n  }, {\n    key: 'remuxVideo',\n    value: function remuxVideo(videoTrack) {\n      var _this2 = this;\n\n      var track = videoTrack || {};\n\n      if (!videoTrack || !videoTrack.samples || !videoTrack.samples.length) {\n        return;\n      }\n\n      var samples = track.samples,\n          meta = track.meta;\n\n\n      if (!meta) return;\n\n      var firstDts = -1;\n\n      var initSegment = null;\n      var mp4Samples = [];\n      var mdatBox = {\n        samples: []\n      };\n\n      var maxLoop = 10000;\n      while (samples.length && maxLoop-- > 0) {\n        var avcSample = samples.shift();\n\n        var isKeyframe = avcSample.isKeyframe,\n            options = avcSample.options;\n\n        if (!this.isFirstVideo && options && options.meta) {\n          initSegment = this.remuxInitSegment('video', options.meta);\n          options.meta = null;\n          samples.unshift(avcSample);\n          if (!options.isContinue) {\n            this._videoDtsBase = 0;\n          }\n          break;\n        }\n        var dts = Math.max(0, avcSample.dts - this.videoDtsBase);\n        if (firstDts === -1) {\n          firstDts = dts;\n        }\n\n        var cts = void 0;\n        var pts = void 0;\n        if (avcSample.pts !== undefined) {\n          pts = avcSample.pts - this._dtsBase;\n          cts = pts - dts;\n        }\n        if (avcSample.cts !== undefined) {\n          pts = avcSample.cts + dts;\n          cts = avcSample.cts;\n        }\n\n        var mdatSample = {\n          buffer: [],\n          size: 0\n        };\n\n        var sampleDuration = 0;\n        if (avcSample.duration) {\n          sampleDuration = avcSample.duration;\n        } else if (samples.length >= 1) {\n          var nextDts = samples[0].dts - this.videoDtsBase;\n          sampleDuration = nextDts - dts;\n        } else {\n          if (mp4Samples.length >= 1) {\n            // lastest sample, use second last duration\n            sampleDuration = mp4Samples[mp4Samples.length - 1].duration;\n          } else {\n            // the only one sample, use reference duration\n            sampleDuration = this._videoMeta.refSampleDuration;\n          }\n        }\n        this.videoAllDuration += sampleDuration;\n        if (logger.long) {\n          logger.log(this.TAG, 'video dts ' + dts, 'pts ' + pts, 'cts: ' + cts, isKeyframe, 'originDts ' + avcSample.originDts, 'duration ' + sampleDuration);\n        }\n        if (sampleDuration >= 0) {\n          mdatBox.samples.push(mdatSample);\n          mdatSample.buffer.push(avcSample.data);\n          mdatSample.size += avcSample.data.byteLength;\n          //  manage same pts sample\n          // if (this.mp4Durations[pts]) {\n          //   pts += this.mp4Durations[pts]\n          //   cts = pts - dts\n          // }\n          mp4Samples.push({\n            dts: dts,\n            cts: cts,\n            pts: pts,\n            data: avcSample.data,\n            size: avcSample.data.byteLength,\n            isKeyframe: isKeyframe,\n            duration: sampleDuration,\n            flags: {\n              isLeading: 0,\n              dependsOn: isKeyframe ? 2 : 1,\n              isDependedOn: isKeyframe ? 1 : 0,\n              hasRedundancy: 0,\n              isNonSync: isKeyframe ? 0 : 1\n            },\n            originDts: dts,\n            type: 'video'\n          });\n          this.mp4Durations[pts] = sampleDuration;\n          this.mp4Durations.keys.push(pts);\n        }\n\n        if (isKeyframe) {\n          this.emit(Mp4Remuxer.EVENTS.RANDOM_ACCESS_POINT, pts);\n        }\n      }\n      // delete too much data\n      if (this.mp4Durations.keys.length > 1e4) {\n        var tmp = this.mp4Durations;\n        this.mp4Durations = {};\n        this.mp4Durations.keys = tmp.keys.slice(-100);\n        this.mp4Durations.keys.forEach(function (key) {\n          _this2.mp4Durations[key] = tmp[key];\n        });\n      }\n      if (mp4Samples.length) {\n        logger.log(this.TAG, 'remux to mp4 video:', [firstDts / 1000, mp4Samples[mp4Samples.length - 1].dts / 1000]);\n      }\n\n      var moofMdat = new Buffer();\n      if (mp4Samples.length && track.meta) {\n        var moof = Fmp4.moof({\n          id: track.meta.id,\n          time: firstDts,\n          samples: mp4Samples\n        });\n        var mdat = Fmp4.mdat(mdatBox);\n        moofMdat.write(moof, mdat);\n\n        this.segmentRemuxed('video', moofMdat, mp4Samples[mp4Samples.length - 1].pts - mp4Samples[0].pts);\n      }\n\n      if (initSegment) {\n        this.segmentRemuxed('video', initSegment);\n\n        if (samples.length) {\n          // second part of stream change\n          track.samples = samples;\n          return this.remuxVideo(track);\n        }\n      }\n\n      this.isFirstVideo = false;\n      this.emit(Mp4Remuxer.EVENTS.TRACK_REMUXED, 'video', moofMdat);\n\n      track.samples = [];\n      track.length = 0;\n    }\n\n    /**\n     *\n     * @param {AudioTrack} track\n     * @return {*}\n     * @private\n     */\n\n  }, {\n    key: 'remuxAudio',\n    value: function remuxAudio(track) {\n      var _ref2 = track || {},\n          samples = _ref2.samples;\n\n      var firstDts = -1;\n      var mp4Samples = [];\n\n      var initSegment = null;\n      var mdatBox = {\n        samples: []\n      };\n      if (!samples || !samples.length) {\n        return;\n      }\n\n      var maxLoop = 10000;\n      var isFirstDtsInited = false;\n      while (samples.length && maxLoop-- > 0) {\n        var sample = samples.shift();\n        var data = sample.data,\n            options = sample.options;\n\n        if (!this.isFirstAudio && options && options.meta) {\n          initSegment = this.remuxInitSegment('audio', options.meta);\n          options.meta = null;\n          samples.unshift(sample);\n          if (!options.isContinue) {\n            this._audioDtsBase = 0;\n          }\n          break;\n        }\n\n        var dts = Math.max(0, sample.dts - this.audioDtsBase);\n        var originDts = sample.originDts;\n        if (!isFirstDtsInited) {\n          firstDts = dts;\n          isFirstDtsInited = true;\n        }\n\n        var sampleDuration = 0;\n        if (sample.duration) {\n          sampleDuration = sample.duration;\n        } else if (this._audioMeta.refSampleDurationFixed) {\n          sampleDuration = this._audioMeta.refSampleDurationFixed;\n        } else if (samples.length >= 1) {\n          var nextDts = samples[0].dts - this.audioDtsBase;\n          sampleDuration = nextDts - dts;\n        } else {\n          if (mp4Samples.length >= 1) {\n            // use second last sample duration\n            sampleDuration = mp4Samples[mp4Samples.length - 1].duration;\n          } else {\n            // the only one sample, use reference sample duration\n            sampleDuration = this._audioMeta.refSampleDuration;\n          }\n        }\n\n        if (logger.long) {\n          // logger.log(this.TAG, `audio dts ${dts}`, `pts ${dts}`, `originDts ${originDts}`, `duration ${sampleDuration}`)\n        }\n        this.audioAllDuration += sampleDuration;\n        var mp4Sample = {\n          dts: dts,\n          pts: dts,\n          cts: 0,\n          size: data.byteLength,\n          duration: sample.duration ? sample.duration : sampleDuration,\n          flags: {\n            isLeading: 0,\n            dependsOn: 1,\n            isDependedOn: 0,\n            hasRedundancy: 0,\n            isNonSync: 0\n          },\n          isKeyframe: true,\n          originDts: originDts,\n          type: 'audio'\n        };\n\n        var mdatSample = {\n          buffer: [],\n          size: 0\n        };\n\n        if (sampleDuration >= 0) {\n          mdatSample.buffer.push(data);\n          mdatSample.size += data.byteLength;\n\n          mdatBox.samples.push(mdatSample);\n          mp4Samples.push(mp4Sample);\n        }\n      }\n\n      var moofMdat = new Buffer();\n\n      if (mp4Samples.length && track.meta) {\n        logger.log(this.TAG, 'remux to mp4 audio:', [firstDts / 1000, mp4Samples[mp4Samples.length - 1].dts / 1000]);\n        var moof = Fmp4.moof({\n          id: track.meta.id,\n          time: firstDts,\n          samples: mp4Samples\n        });\n        var mdat = Fmp4.mdat(mdatBox);\n        moofMdat.write(moof, mdat);\n\n        this.segmentRemuxed('audio', moofMdat, mp4Samples[mp4Samples.length - 1].dts - mp4Samples[0].dts);\n      }\n\n      if (initSegment) {\n        this.segmentRemuxed('audio', initSegment);\n        if (samples.length) {\n          // second part of stream change\n          track.samples = samples;\n          return this.remuxAudio(track);\n        }\n      }\n\n      this.isFirstAudio = false;\n      this.emit(Mp4Remuxer.EVENTS.TRACK_REMUXED, 'audio', moofMdat);\n\n      track.samples = [];\n      track.length = 0;\n    }\n  }, {\n    key: 'segmentRemuxed',\n    value: function segmentRemuxed(type, buffer, bufferDuration) {\n      this.emit(Mp4Remuxer.EVENTS.MEDIA_SEGMENT, type, buffer, bufferDuration);\n    }\n  }, {\n    key: 'videoDtsBase',\n    get: function get() {\n      if (this._videoDtsBase !== null) {\n        return this._videoDtsBase;\n      }\n      return this._dtsBase;\n    },\n    set: function set(value) {\n      this._videoDtsBase = value;\n    }\n  }, {\n    key: 'audioDtsBase',\n    get: function get() {\n      if (this._audioDtsBase !== null) {\n        return this._audioDtsBase;\n      }\n      return this._dtsBase;\n    }\n  }], [{\n    key: 'EVENTS',\n    get: function get() {\n      return {\n        MEDIA_SEGMENT: 'MEDIA_SEGMENT',\n        INIT_SEGMENT: 'INIT_SEGMENT',\n        RANDOM_ACCESS_POINT: 'RANDOM_ACCESS_POINT',\n        TRACK_REMUXED: 'TRACK_REMUXED'\n      };\n    }\n  }]);\n\n  return Mp4Remuxer;\n}(EventEmitter);\n\nexport default Mp4Remuxer;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS } from 'xgplayer-helper-utils';\nimport Remuxer from './remuxer';\n\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\nvar PLAYER_EVENTS = EVENTS.PLAYER_EVENTS;\n\nvar Mp4Remuxer = function () {\n  function Mp4Remuxer() {\n    var curTime = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;\n\n    _classCallCheck(this, Mp4Remuxer);\n\n    this.TAG = 'Mp4Remuxer';\n    this._curTime = curTime;\n    if (!this.remuxer) {\n      this.initRemuxer();\n    }\n  }\n\n  _createClass(Mp4Remuxer, [{\n    key: 'init',\n    value: function init() {\n      this.on(REMUX_EVENTS.REMUX_MEDIA, this.remux.bind(this));\n      this.on(REMUX_EVENTS.REMUX_METADATA, this.onMetaDataReady.bind(this));\n      this.on(REMUX_EVENTS.DETECT_CHANGE_STREAM, this.resetDtsBase.bind(this));\n      this.on(REMUX_EVENTS.DETECT_FRAG_ID_DISCONTINUE, this.seek.bind(this));\n      this.on(PLAYER_EVENTS.SEEK, this.seek.bind(this));\n    }\n  }, {\n    key: 'initRemuxer',\n    value: function initRemuxer() {\n      this.remuxer = new Remuxer({\n        audioMeta: null,\n        videoMeta: null,\n        curTime: this._curTime\n      });\n      this.remuxer.on(Remuxer.EVENTS.MEDIA_SEGMENT, this.writeToSource.bind(this));\n      this.remuxer.on(Remuxer.EVENTS.TRACK_REMUXED, this.onTrackRemuxed.bind(this));\n    }\n  }, {\n    key: 'remux',\n    value: function remux() {\n      if (!this.remuxer._videoMeta) {\n        this.remuxer._videoMeta = this.videoMeta;\n        this.remuxer._audioMeta = this.audioMeta;\n      }\n\n      var _context$getInstance = this._context.getInstance('TRACKS'),\n          audioTrack = _context$getInstance.audioTrack,\n          videoTrack = _context$getInstance.videoTrack;\n\n      return this.remuxer.remux(audioTrack, videoTrack);\n    }\n  }, {\n    key: 'resetDtsBase',\n    value: function resetDtsBase() {\n      this.remuxer && this.remuxer.resetDtsBase();\n    }\n  }, {\n    key: 'seek',\n    value: function seek(time) {\n      this.remuxer && this.remuxer.seek(time);\n    }\n  }, {\n    key: 'onMetaDataReady',\n    value: function onMetaDataReady(type) {\n      if (!this.remuxer) {\n        this.initRemuxer();\n      }\n      var track = void 0;\n\n      if (type === 'audio') {\n        var _context$getInstance2 = this._context.getInstance('TRACKS'),\n            audioTrack = _context$getInstance2.audioTrack;\n\n        track = audioTrack;\n      } else {\n        var _context$getInstance3 = this._context.getInstance('TRACKS'),\n            videoTrack = _context$getInstance3.videoTrack;\n\n        track = videoTrack;\n      }\n\n      var presourcebuffer = this._context.getInstance('PRE_SOURCE_BUFFER');\n      var source = presourcebuffer.getSource(type);\n      if (!source) {\n        source = presourcebuffer.createSource(type);\n      }\n\n      source.mimetype = track.meta.codec;\n      source.init = this.remuxer.remuxInitSegment(type, track.meta);\n\n      this.emit(REMUX_EVENTS.INIT_SEGMENT, type);\n    }\n  }, {\n    key: 'onTrackRemuxed',\n    value: function onTrackRemuxed(track) {\n      this.emit(REMUX_EVENTS.MEDIA_SEGMENT, track);\n    }\n  }, {\n    key: 'writeToSource',\n    value: function writeToSource(type, buffer, bufferDuration) {\n      var presourcebuffer = this._context.getInstance('PRE_SOURCE_BUFFER');\n      var source = presourcebuffer.getSource(type);\n      if (!source) {\n        source = presourcebuffer.createSource(type);\n      }\n      source.data.push(buffer);\n      if (bufferDuration) {\n        source.bufferDuration = bufferDuration + (source.bufferDuration || 0);\n      }\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      if (this.remuxer) {\n        this.remuxer.destroy();\n      }\n      this.remuxer = null;\n    }\n  }, {\n    key: 'videoMeta',\n    get: function get() {\n      return this._context.getInstance('TRACKS').videoTrack.meta;\n    }\n  }, {\n    key: 'audioMeta',\n    get: function get() {\n      return this._context.getInstance('TRACKS').audioTrack.meta;\n    }\n  }]);\n\n  return Mp4Remuxer;\n}();\n\nexport default Mp4Remuxer;","import { Mse, FetchLoader, Crypto } from 'xgplayer-helper-utils';\nimport { Tracks, RemuxedBufferManager, Buffer as XgBuffer, Playlist } from 'xgplayer-helper-models';\n\nimport { CompatHls as Compatibility } from 'xgplayer-helper-codec';\nimport { Mp4Remuxer, M3U8Parser, TsDemuxer } from 'xgplayer-helper-transmuxers';\n\nexport default {\n  Mse: Mse,\n  Tracks: Tracks,\n  RemuxedBufferManager: RemuxedBufferManager,\n  XgBuffer: XgBuffer,\n  FetchLoader: FetchLoader,\n  Compatibility: Compatibility,\n  Mp4Remuxer: Mp4Remuxer,\n  Crypto: Crypto,\n  M3U8Parser: M3U8Parser,\n  TsDemuxer: TsDemuxer,\n  Playlist: Playlist\n};","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nimport Player from 'xgplayer';\nimport { EVENTS, Context } from 'xgplayer-helper-utils';\nimport HlsLiveController from './hls-live';\nimport defaultConfig from './config';\nvar HlsAllowedEvents = EVENTS.HlsAllowedEvents;\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\n\nvar util = Player.util;\n\nvar HlsLivePlayer = function (_Player) {\n  _inherits(HlsLivePlayer, _Player);\n\n  function HlsLivePlayer(options) {\n    _classCallCheck(this, HlsLivePlayer);\n\n    var _this = _possibleConstructorReturn(this, (HlsLivePlayer.__proto__ || Object.getPrototypeOf(HlsLivePlayer)).call(this, options));\n\n    _this.hlsOps = {};\n    _this.hlsOps = Object.assign(_this.hlsOps, defaultConfig);\n    util.deepCopy(_this.hlsOps, options);\n    _this._played = false;\n    // this.started = false;\n    return _this;\n  }\n\n  _createClass(HlsLivePlayer, [{\n    key: '_initEvents',\n    value: function _initEvents() {\n      var _this2 = this;\n\n      this.__core__.once(REMUX_EVENTS.INIT_SEGMENT, function () {\n        var mse = _this2._context.getInstance('MSE');\n        if (!_this2.started) {\n          var live = util.createDom('xg-live', '正在直播', {}, 'xgplayer-live');\n          util.addClass(_this2.root, 'xgplayer-is-live');\n          _this2.controls.appendChild(live);\n        }\n        _this2.started = true;\n        _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'start', _this2).call(_this2, mse.url);\n      });\n    }\n  }, {\n    key: 'start',\n    value: function start() {\n      var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.config.url;\n\n      if (!url || this.started) {\n        return;\n      }\n\n      if (!this._context) {\n        this._context = new Context(this, this.hlsOps, HlsAllowedEvents);\n      }\n\n      if (!this.hlsOps) {\n        this.hlsOps = {};\n        this.hlsOps = Object.assign(this.hlsOps, defaultConfig);\n        util.deepCopy(this.hlsOps, this.config);\n        this._played = false;\n      }\n\n      this.__core__ = this._context.registry('HLS_LIVE_CONTROLLER', HlsLiveController)({ player: this, container: this.video, preloadTime: this.config.preloadTime });\n      this._context.init();\n      this.url = url;\n      this.__core__.load(url);\n      this._initEvents();\n      this.started = true;\n    }\n  }, {\n    key: 'play',\n    value: function play() {\n      var _this3 = this;\n\n      if (this._played) {\n        this.src = this.config.url;\n        this.once('canplay', function () {\n          _this3.video.play();\n        });\n        return;\n      }\n      this._played = true;\n      _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'play', this).call(this);\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      var _this4 = this;\n\n      if (this._context) {\n        this._context.destroy();\n      }\n      var prom = new Promise(function (resolve) {\n        if (_this4.__core__ && _this4.__core__.mse) {\n          _this4.__core__.mse.destroy().then(function () {\n            setTimeout(function () {\n              resolve();\n            }, 50);\n          });\n        } else {\n          setTimeout(function () {\n            resolve();\n          }, 50);\n        }\n      });\n      _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'destroy', this).call(this);\n\n      return prom;\n    }\n  }, {\n    key: 'src',\n    set: function set(url) {\n      var _this5 = this;\n\n      this.onWaiting = this.onWaiting.bind(this);\n      this.__core__.mse.destroy().then(function () {\n        _this5._context.destroy();\n        _this5._context = null;\n        _this5.started = false;\n        _this5.video.currentTime = 0;\n\n        _this5.start(url);\n      });\n    }\n  }], [{\n    key: 'isSupported',\n    value: function isSupported() {\n      return window.MediaSource && window.MediaSource.isTypeSupported('video/mp4; codecs=\"avc1.42E01E,mp4a.40.2\"');\n    }\n  }, {\n    key: 'install',\n    value: function install(name, plugin) {\n      return Player.install(name, plugin);\n    }\n  }]);\n\n  return HlsLivePlayer;\n}(Player);\n\nexport default HlsLivePlayer;\n\n\nHlsLivePlayer.install = Player.install.bind(Player);","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS } from 'xgplayer-helper-utils';\nimport { XGDataView } from 'xgplayer-helper-models';\nimport { avc, hevc } from 'xgplayer-helper-codec';\n\nvar NalUnitHEVC = hevc.NalUnitHEVC;\nvar NalUnit = avc.NalUnit;\n\nvar LOADER_EVENTS = EVENTS.LOADER_EVENTS;\nvar DEMUX_EVENTS = EVENTS.DEMUX_EVENTS;\nvar HLS_EVENTS = EVENTS.HLS_EVENTS;\nvar CRYTO_EVENTS = EVENTS.CRYTO_EVENTS;\nvar HLS_ERROR = 'HLS_ERROR';\n\nvar MASTER_PLAYLIST_REGEX = /#EXT-X-STREAM-INF:([^\\n\\r]*)[\\r\\n]+([^\\r\\n]+)/g;\n\nvar HlsLiveController = function () {\n  function HlsLiveController(configs) {\n    _classCallCheck(this, HlsLiveController);\n\n    this.configs = Object.assign({}, configs);\n    this.url = '';\n    this.sequence = 0;\n    this._playlist = null;\n    this.retrytimes = this.configs.retrytimes || 3;\n    this.preloadTime = this.configs.preloadTime;\n    this.container = this.configs.container;\n    this._m3u8lasttime = 0;\n    this._timmer = setInterval(this._checkStatus.bind(this), 50);\n    this._lastCheck = 0;\n\n    this.m3u8Text = null;\n  }\n\n  _createClass(HlsLiveController, [{\n    key: 'init',\n    value: function init() {\n      var _player$hlsOps = this._player.hlsOps,\n          XgBuffer = _player$hlsOps.XgBuffer,\n          Tracks = _player$hlsOps.Tracks,\n          Playlist = _player$hlsOps.Playlist,\n          FetchLoader = _player$hlsOps.FetchLoader,\n          TsDemuxer = _player$hlsOps.TsDemuxer;\n      // 初始化Buffer （M3U8/TS/Playlist);\n\n      this._context.registry('M3U8_BUFFER', XgBuffer);\n      this._context.registry('TS_BUFFER', XgBuffer);\n      this._context.registry('TRACKS', Tracks);\n\n      this._playlist = this._context.registry('PLAYLIST', Playlist)({ autoclear: true });\n\n      // 初始化M3U8Loader;\n      this._m3u8loader = this._context.registry('M3U8_LOADER', FetchLoader)({ buffer: 'M3U8_BUFFER', readtype: 1 });\n      this._tsloader = this._context.registry('TS_LOADER', FetchLoader)({ buffer: 'TS_BUFFER', readtype: 3 });\n\n      // 初始化TS Demuxer\n      this._context.registry('TS_DEMUXER', TsDemuxer)({ inputbuffer: 'TS_BUFFER' });\n\n      this.initEvents();\n    }\n  }, {\n    key: 'initEvents',\n    value: function initEvents() {\n      this.on(LOADER_EVENTS.LOADER_COMPLETE, this._onLoadComplete.bind(this));\n\n      this.on(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed.bind(this));\n\n      this.on(DEMUX_EVENTS.SEI_PARSED, this._handleSEIParsed.bind(this));\n\n      this.on(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete.bind(this));\n\n      this.on(LOADER_EVENTS.LOADER_ERROR, this._onLoadError.bind(this));\n\n      this.on(DEMUX_EVENTS.DEMUX_ERROR, this._onDemuxError.bind(this));\n    }\n  }, {\n    key: '_onError',\n    value: function _onError(type, mod, err, fatal) {\n      var error = {\n        errorType: type,\n        errorDetails: '[' + mod + ']: ' + (err ? err.message : ''),\n        errorFatal: fatal\n      };\n      this._player.emit(HLS_ERROR, error);\n    }\n  }, {\n    key: '_onDemuxComplete',\n    value: function _onDemuxComplete() {\n      var _this = this;\n\n      if (this._player.video) {\n        var _context$getInstance = this._context.getInstance('TRACKS'),\n            videoTrack = _context$getInstance.videoTrack,\n            audioTrack = _context$getInstance.audioTrack;\n\n        videoTrack.samples.forEach(function (sample) {\n          if (sample.analyzed) {\n            return;\n          }\n          sample.analyzed = true;\n          var buffer = new XGDataView(sample.data.buffer);\n          var nals = void 0;\n          if (_this._isHEVC(videoTrack.meta)) {\n            nals = NalUnitHEVC.getHvccNals(buffer);\n          } else {\n            nals = NalUnit.getNalunits(buffer);\n          }\n          var nalsLength = nals.reduce(function (len, current) {\n            return len + 4 + current.body.byteLength;\n          }, 0);\n          var newData = new Uint8Array(nalsLength);\n          var offset = 0;\n          nals.forEach(function (nal) {\n            newData.set([0, 0, 0, 1], offset);\n            offset += 4;\n            newData.set(new Uint8Array(nal.body), offset);\n            offset += nal.body.byteLength;\n          });\n\n          sample.data = newData;\n        });\n        this._player.video.onDemuxComplete(videoTrack, audioTrack);\n      }\n    }\n  }, {\n    key: '_onMetadataParsed',\n    value: function _onMetadataParsed(type) {\n      if (type === 'audio') {\n        // 将音频meta信息交给audioContext，不走remux封装\n        var _context$getInstance2 = this._context.getInstance('TRACKS'),\n            audioTrack = _context$getInstance2.audioTrack;\n\n        if (audioTrack && audioTrack.meta) {\n          this._setMetaToAudio(audioTrack.meta);\n        }\n      } else {\n        var _context$getInstance3 = this._context.getInstance('TRACKS'),\n            videoTrack = _context$getInstance3.videoTrack;\n\n        if (videoTrack && videoTrack.meta) {\n          this._setMetaToVideo(videoTrack.meta);\n        }\n      }\n    }\n  }, {\n    key: '_setMetaToAudio',\n    value: function _setMetaToAudio(audioMeta) {\n      if (this._player.video) {\n        this._player.video.setAudioMeta(audioMeta);\n      }\n    }\n  }, {\n    key: '_setMetaToVideo',\n    value: function _setMetaToVideo(videoMeta) {\n      if (this._player.video) {\n        this._player.video.setVideoMeta(videoMeta);\n      }\n    }\n  }, {\n    key: '_onLoadError',\n    value: function _onLoadError(loader, error) {\n      if (!this._tsloader.loading && !this._m3u8loader.loading && this.retrytimes > 1) {\n        this.retrytimes--;\n        this._onError(LOADER_EVENTS.LOADER_ERROR, loader, error, false);\n      } else if (this.retrytimes <= 1) {\n        this._onError(LOADER_EVENTS.LOADER_ERROR, loader, error, true);\n        this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n        if (this._player.video) {\n          this._player.video.handleEnded();\n        }\n      }\n    }\n  }, {\n    key: '_onDemuxError',\n    value: function _onDemuxError(mod, error, fatal) {\n      if (fatal === undefined) {\n        fatal = true;\n      }\n      this._onError(LOADER_EVENTS.LOADER_ERROR, mod, error, fatal);\n    }\n  }, {\n    key: '_handleSEIParsed',\n    value: function _handleSEIParsed(sei) {\n      this._player.emit('SEI_PARSED', sei);\n    }\n  }, {\n    key: '_onLoadComplete',\n    value: function _onLoadComplete(buffer) {\n      if (buffer.TAG === 'M3U8_BUFFER') {\n        var mdata = void 0;\n        try {\n          this.m3u8Text = buffer.shift();\n          var result = MASTER_PLAYLIST_REGEX.exec(this.m3u8Text);\n          if (result && result[2]) {\n            // redirect\n            this.load(result[2]);\n          } else {\n            mdata = this._player.hlsOps.M3U8Parser.parse(this.m3u8Text, this.url);\n          }\n        } catch (error) {\n          this._onError('M3U8_PARSER_ERROR', 'M3U8_PARSER', error, false);\n        }\n\n        if (!mdata) {\n          if (this.retrytimes > 0) {\n            this.retrytimes--;\n            this._preload();\n          } else {\n            this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n            if (this._player.video) {\n              this._player.video.handleEnded();\n            }\n          }\n          return;\n        }\n\n        try {\n          this._playlist.pushM3U8(mdata, true);\n        } catch (error) {\n          this._onError('M3U8_PARSER_ERROR', 'PLAYLIST', error, false);\n        }\n\n        if (this._playlist.encrypt && this._playlist.encrypt.uri && !this._playlist.encrypt.key) {\n          var _player$hlsOps2 = this._player.hlsOps,\n              XgBuffer = _player$hlsOps2.XgBuffer,\n              FetchLoader = _player$hlsOps2.FetchLoader;\n\n          this._context.registry('DECRYPT_BUFFER', XgBuffer)();\n          this._context.registry('KEY_BUFFER', XgBuffer)();\n          this._tsloader.buffer = 'DECRYPT_BUFFER';\n          this._keyLoader = this._context.registry('KEY_LOADER', FetchLoader)({ buffer: 'KEY_BUFFER', readtype: 3 });\n          this.emitTo('KEY_LOADER', LOADER_EVENTS.LADER_START, this._playlist.encrypt.uri);\n        } else {\n          this._m3u8Loaded(mdata);\n        }\n      } else if (buffer.TAG === 'TS_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.downloaded(this._tsloader.url, true);\n        this.emit(DEMUX_EVENTS.DEMUX_START);\n      } else if (buffer.TAG === 'DECRYPT_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.downloaded(this._tsloader.url, true);\n        this.emitTo('CRYPTO', CRYTO_EVENTS.START_DECRYPT);\n      } else if (buffer.TAG === 'KEY_BUFFER') {\n        var Crypto = this._player.hlsOps.Crypto;\n\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.encrypt.key = buffer.shift();\n        this._crypto = this._context.registry('CRYPTO', Crypto)({\n          key: this._playlist.encrypt.key,\n          iv: this._playlist.encrypt.ivb,\n          method: this._playlist.encrypt.method,\n          inputbuffer: 'DECRYPT_BUFFER',\n          outputbuffer: 'TS_BUFFER'\n        });\n        this._crypto.on(CRYTO_EVENTS.DECRYPTED, this._onDcripted.bind(this));\n      }\n    }\n  }, {\n    key: '_onDcripted',\n    value: function _onDcripted() {\n      this.emit(DEMUX_EVENTS.DEMUX_START);\n    }\n  }, {\n    key: '_m3u8Loaded',\n    value: function _m3u8Loaded(mdata) {\n      if (!this.preloadTime) {\n        this.preloadTime = this._playlist.targetduration ? this._playlist.targetduration : 5;\n      }\n      if (this._playlist.fragLength > 0 && this._playlist.sequence < mdata.sequence) {\n        this.retrytimes = this.configs.retrytimes || 3;\n      } else {\n        if (this.retrytimes > 0) {\n          this.retrytimes--;\n          this._preload();\n        } else {\n          this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED);\n          if (this._player.video) {\n            this._player.video.handleEnded();\n          }\n        }\n      }\n    }\n  }, {\n    key: '_checkStatus',\n    value: function _checkStatus() {\n      if (this.retrytimes < 1 && new Date().getTime() - this._lastCheck < 10000) {\n        return;\n      }\n      this._lastCheck = new Date().getTime();\n      if (this.container.buffered.length < 1) {\n        this._preload();\n      } else {\n        // Check for load.\n        var currentTime = this.container.currentTime;\n        if (this.container.readyState <= 2) {\n          this._preload();\n        }\n        var bufferend = this.container.buffered.end(this.container.buffered.length - 1);\n\n        if (currentTime > bufferend - this.preloadTime) {\n          this._preload();\n        }\n      }\n    }\n  }, {\n    key: '_preload',\n    value: function _preload() {\n      if (this._tsloader.loading || this._m3u8loader.loading) {\n        return;\n      }\n      var frag = this._playlist.getTs();\n\n      if (frag && !frag.downloaded && !frag.downloading) {\n        this._playlist.downloading(frag.url, true);\n        this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, frag.url);\n      } else {\n        var preloadTime = this.preloadTime ? this.preloadTime : 0;\n        var current = new Date().getTime();\n        if ((!frag || frag.downloaded) && (current - this._m3u8lasttime) / 1000 > preloadTime) {\n          this._m3u8lasttime = current;\n          this.emitTo('M3U8_LOADER', LOADER_EVENTS.LADER_START, this.url);\n        }\n      }\n    }\n  }, {\n    key: '_isHEVC',\n    value: function _isHEVC(meta) {\n      return meta && meta.codec === 'hev1.1.6.L93.B0';\n    }\n  }, {\n    key: 'load',\n    value: function load(url) {\n      this.url = url;\n      this._preload();\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      clearInterval(this._timmer);\n      this.off(LOADER_EVENTS.LOADER_COMPLETE, this._onLoadComplete);\n      // this.off(REMUX_EVENTS.REMUX_ERROR);\n      this.off(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed);\n      this.off(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete);\n\n      this.m3u8Text = null;\n    }\n  }]);\n\n  return HlsLiveController;\n}();\n\nexport default HlsLiveController;","import { Tracks, Buffer as XgBuffer, Playlist } from 'xgplayer-helper-models';\nimport { Crypto, FetchLoader } from 'xgplayer-helper-utils';\nimport { M3U8Parser, TsDemuxer } from 'xgplayer-helper-transmuxers';\n\nexport default {\n  Tracks: Tracks,\n  XgBuffer: XgBuffer,\n  FetchLoader: FetchLoader,\n  Crypto: Crypto,\n  M3U8Parser: M3U8Parser,\n  TsDemuxer: TsDemuxer,\n  Playlist: Playlist\n};","var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nimport Player from 'xgplayer';\nimport { EVENTS, Context } from 'xgplayer-helper-utils';\nimport HlsLiveController from './hls-live-mobile';\nimport defaultConfig from './config';\n// import 'xgplayer-mobilevideo'\nvar HlsAllowedEvents = EVENTS.HlsAllowedEvents;\n\nvar HlsLivePlayer = function (_Player) {\n  _inherits(HlsLivePlayer, _Player);\n\n  _createClass(HlsLivePlayer, null, [{\n    key: 'isSupported',\n    value: function isSupported() {\n      var wasmSupported = 'WebAssembly' in window;\n      var WebComponentSupported = 'customElements' in window && window.customElements.define;\n      var isComponentDefined = false;\n      if (WebComponentSupported) {\n        isComponentDefined = window.customElements.get('live-video');\n      }\n      return wasmSupported && isComponentDefined;\n    }\n  }]);\n\n  function HlsLivePlayer(options) {\n    _classCallCheck(this, HlsLivePlayer);\n\n    if (!options.mediaType) {\n      options.mediaType = 'live-video';\n      if (options.videoConfig) {\n        options.videoConfig.preloadtime = options.preloadTime || 5;\n      } else {\n        options.videoConfig = {\n          preloadtime: options.preloadTime || 5\n        };\n      }\n    }\n\n    var _this = _possibleConstructorReturn(this, (HlsLivePlayer.__proto__ || Object.getPrototypeOf(HlsLivePlayer)).call(this, options));\n\n    _this.hlsOps = {};\n    _this.util = Player.util;\n    _this.hlsOps = Object.assign(_this.hlsOps, defaultConfig);\n    _this.util.deepCopy(_this.hlsOps, options);\n    if (!_this.playerInited) {\n      _this.initPlayer();\n    }\n    // this.started = false;\n    return _this;\n  }\n\n  _createClass(HlsLivePlayer, [{\n    key: 'initPlayer',\n    value: function initPlayer() {\n      this.video.width = Number.parseInt(this.hlsOps.width || 600);\n      this.video.height = Number.parseInt(this.hlsOps.height || 337.5);\n      this.video.style.outline = 'none';\n      this.playerInited = true;\n    }\n  }, {\n    key: '_initEvents',\n    value: function _initEvents() {\n      var _this2 = this;\n\n      this.once('canplay', function () {\n        _this2.video.play();\n      });\n    }\n  }, {\n    key: 'start',\n    value: function start() {\n      var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.hlsOps.url;\n\n      if (!url || this.started) {\n        return;\n      }\n\n      if (!this.playerInited) {\n        this.initPlayer();\n      }\n\n      if (!this._context) {\n        this._context = new Context(HlsAllowedEvents);\n      }\n\n      this.__core__ = this._context.registry('HLS_LIVE_CONTROLLER', HlsLiveController)({ player: this, container: this.video, preloadTime: this.config.preloadTime });\n      this._context.init();\n      this.url = url;\n      this.__core__.load(url);\n      _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'start', this).call(this, url);\n      this._initEvents();\n      this.started = true;\n      this.addLiveFlag();\n    }\n  }, {\n    key: 'play',\n    value: function play() {\n      if (this.started) {\n        this._context.destroy();\n        this._context = new Context(HlsAllowedEvents);\n        this.__core__ = this._context.registry('HLS_LIVE_CONTROLLER', HlsLiveController)({ player: this, container: this.video, preloadTime: this.config.preloadTime });\n        this._context.init();\n        this._initEvents();\n        this.__core__.load(this.url);\n      }\n      _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'play', this).call(this);\n    }\n  }, {\n    key: 'addLiveFlag',\n    value: function addLiveFlag() {\n      var player = this;\n      Player.util.addClass(player.root, 'xgplayer-is-live');\n      if (!Player.util.findDom(this.root, 'xg-live')) {\n        var live = Player.util.createDom('xg-live', '正在直播', {}, 'xgplayer-live');\n        player.controls.appendChild(live);\n      }\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      var _this3 = this;\n\n      var isDelDOM = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n\n      return new Promise(function (resolve) {\n        _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'destroy', _this3).call(_this3);\n        var video = _this3.video,\n            root = _this3.root;\n\n        _get(HlsLivePlayer.prototype.__proto__ || Object.getPrototypeOf(HlsLivePlayer.prototype), 'destroy', _this3).call(_this3, isDelDOM);\n        if (video && video.remove) {\n          video.remove();\n        } else if (root) {\n          root.removeChild(video);\n        }\n        if (video) {\n          video.destroy();\n        }\n        setTimeout(function () {\n          resolve();\n        }, 50);\n      });\n    }\n  }, {\n    key: 'src',\n    set: function set(url) {\n      this.onWaiting = this.onWaiting.bind(this);\n      this._context.destroy();\n      this._context = null;\n      this.started = false;\n      this.video.currentTime = 0;\n\n      this.start(url);\n    }\n  }], [{\n    key: 'install',\n    value: function install(name, plugin) {\n      return Player.install(name, plugin);\n    }\n  }]);\n\n  return HlsLivePlayer;\n}(Player);\n\nexport default HlsLivePlayer;\n\n\nHlsLivePlayer.install = Player.install.bind(Player);","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport Player from 'xgplayer';\nimport HlsLiveMsePlayer from './mse';\nimport HlsLiveMobilePlayer from './mobile';\nimport { EVENTS } from 'xgplayer-helper-utils';\n// import 'xgplayer-mobilevideo'\n\nvar HlsLivePlayer = function () {\n  function HlsLivePlayer(config) {\n    _classCallCheck(this, HlsLivePlayer);\n\n    if (HlsLiveMobilePlayer.isSupported() && config.useWASM) {\n      return new HlsLiveMobilePlayer(config);\n    }if (HlsLiveMsePlayer.isSupported()) {\n      return new HlsLiveMsePlayer(config);\n    } else {\n      return new Player(config);\n    }\n  }\n\n  _createClass(HlsLivePlayer, null, [{\n    key: 'install',\n    value: function install(name, plugin) {\n      return Player.install(name, plugin);\n    }\n  }]);\n\n  return HlsLivePlayer;\n}();\n\nexport default HlsLivePlayer;\n\n\nHlsLivePlayer.EVENTS = EVENTS;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nimport { EVENTS, Mse, Crypto, FetchLoader, logger } from 'xgplayer-helper-utils';\nimport { RemuxedBufferManager, Tracks, Buffer as XgBuffer, Playlist } from 'xgplayer-helper-models';\nimport { CompatHls as Compatibility } from 'xgplayer-helper-codec';\nimport { Mp4Remuxer, M3U8Parser, TsDemuxer } from 'xgplayer-helper-transmuxers';\n\nvar LOADER_EVENTS = EVENTS.LOADER_EVENTS;\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\nvar DEMUX_EVENTS = EVENTS.DEMUX_EVENTS;\nvar HLS_EVENTS = EVENTS.HLS_EVENTS;\nvar CRYTO_EVENTS = EVENTS.CRYTO_EVENTS;\nvar MSE_EVENTS = EVENTS.MSE_EVENTS;\n\nvar HLS_ERROR = 'HLS_ERROR';\n\nvar HlsVodController = function () {\n  function HlsVodController(configs) {\n    _classCallCheck(this, HlsVodController);\n\n    this.TAG = 'HlsVodController';\n    this.configs = Object.assign({}, configs);\n    this.url = '';\n    this.sequence = 0;\n    this._playlist = null;\n    this.retrytimes = this.configs.retrytimes || 3;\n    this.container = this.configs.container;\n    this.preloadTime = this.configs.preloadTime || 5;\n    this.mse = this.configs.mse;\n    this._lastSeekTime = 0;\n\n    this.m3u8Text = null;\n  }\n\n  _createClass(HlsVodController, [{\n    key: 'init',\n    value: function init() {\n      // 初始化Buffer （M3U8/TS/Playlist);\n      this._context.registry('M3U8_BUFFER', XgBuffer);\n      this._tsBuffer = this._context.registry('TS_BUFFER', XgBuffer)();\n      this._tracks = this._context.registry('TRACKS', Tracks)();\n\n      this._playlist = this._context.registry('PLAYLIST', Playlist)({ autoclear: false });\n      this._presource = this._context.registry('PRE_SOURCE_BUFFER', RemuxedBufferManager)();\n\n      this._compat = this._context.registry('COMPATIBILITY', Compatibility)();\n\n      // 初始化M3U8Loader;\n      this._context.registry('M3U8_LOADER', FetchLoader)({ buffer: 'M3U8_BUFFER', readtype: 1 });\n      this._tsloader = this._context.registry('TS_LOADER', FetchLoader)({ buffer: 'TS_BUFFER', readtype: 3 });\n\n      // 初始化TS Demuxer\n      this._demuxer = this._context.registry('TS_DEMUXER', TsDemuxer)({ inputbuffer: 'TS_BUFFER' });\n\n      // 初始化MP4 Remuxer\n      this._context.registry('MP4_REMUXER', Mp4Remuxer)(this._player.currentTime);\n\n      // 初始化MSE\n      if (!this.mse) {\n        this.mse = new Mse({ container: this.container, preloadTime: this.preloadTime }, this._context);\n        this.mse.init();\n      }\n      this.initEvents();\n    }\n  }, {\n    key: 'initEvents',\n    value: function initEvents() {\n      this._onLoaderCompete = this._onLoaderCompete.bind(this);\n      this._onLoadError = this._onLoadError.bind(this);\n      this._onInitSegment = this._onInitSegment.bind(this);\n      this._handleSEIParsed = this._handleSEIParsed.bind(this);\n      this._onMediaSegment = this._onMediaSegment.bind(this);\n      this._onMetadataParsed = this._onMetadataParsed.bind(this);\n      this._onDemuxComplete = this._onDemuxComplete.bind(this);\n      this._onDemuxError = this._onDemuxError.bind(this);\n      this._onRemuxError = this._onRemuxError.bind(this);\n      this._handleMseError = this._handleMseError.bind(this);\n      this._onUpdateEnd = this._onUpdateEnd.bind(this);\n      this._onTimeUpdate = this._onTimeUpdate.bind(this);\n      this._onWaiting = this._onWaiting.bind(this);\n\n      this.on(LOADER_EVENTS.LOADER_COMPLETE, this._onLoaderCompete);\n\n      this.on(LOADER_EVENTS.LOADER_ERROR, this._onLoadError);\n\n      this.on(REMUX_EVENTS.INIT_SEGMENT, this._onInitSegment);\n\n      this.on(DEMUX_EVENTS.SEI_PARSED, this._handleSEIParsed);\n\n      this.on(REMUX_EVENTS.MEDIA_SEGMENT, this._onMediaSegment);\n\n      this.on(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed);\n\n      this.on(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete);\n\n      this.on(DEMUX_EVENTS.DEMUX_ERROR, this._onDemuxError);\n\n      this.on(REMUX_EVENTS.REMUX_ERROR, this._onRemuxError);\n      this.on(MSE_EVENTS.MSE_ERROR, this._handleMseError);\n      this.on(MSE_EVENTS.SOURCE_UPDATE_END, this._onUpdateEnd);\n\n      this.on('TIME_UPDATE', this._onTimeUpdate);\n\n      this.on(MSE_EVENTS.SOURCE_UPDATE_END, this._onTimeUpdate);\n\n      this.on('WAITING', this._onWaiting);\n    }\n  }, {\n    key: '_onError',\n    value: function _onError(type, mod, err, fatal) {\n      var error = {\n        errorType: type,\n        errorDetails: '[' + mod + ']: ' + (err ? err.message : ''),\n        errorFatal: fatal\n      };\n      this._player && this._player.emit(HLS_ERROR, error);\n    }\n  }, {\n    key: '_onLoadError',\n    value: function _onLoadError(mod, error) {\n      this._player.emit('error', {\n        errorType: 'network',\n        ex: '[' + mod + ']: ' + error.message,\n        errd: {}\n      });\n      this._onError(LOADER_EVENTS.LOADER_ERROR, mod, error, true);\n      // this.emit(HLS_EVENTS.RETRY_TIME_EXCEEDED)\n    }\n  }, {\n    key: '_onDemuxError',\n    value: function _onDemuxError(mod, error, fatal) {\n      if (fatal === undefined) {\n        fatal = true;\n      }\n      this._player.emit('error', {\n        errorType: 'parse',\n        ex: '[' + mod + ']: ' + error.message,\n        errd: {}\n      });\n      this._onError(LOADER_EVENTS.LOADER_ERROR, mod, error, fatal);\n    }\n  }, {\n    key: '_onRemuxError',\n    value: function _onRemuxError(mod, error, fatal) {\n      if (fatal === undefined) {\n        fatal = true;\n      }\n      this._player.emit('error', {\n        errorType: 'parse',\n        ex: '[' + mod + ']: ' + error.message,\n        errd: {}\n      });\n      this._onError(REMUX_EVENTS.REMUX_ERROR, mod, error, fatal);\n    }\n  }, {\n    key: '_handleMseError',\n    value: function _handleMseError(tag, err, fatal) {\n      if (fatal === undefined) {\n        fatal = false;\n      }\n      this._player.emit('error', {\n        errorType: 'format',\n        ex: '[' + tag + ']: ' + err.message,\n        errd: {}\n      });\n      this._onError(MSE_EVENTS.MSE_ERROR, tag, err, fatal);\n    }\n  }, {\n    key: '_onWaiting',\n    value: function _onWaiting(container) {\n      var end = true;\n\n      logger.log(this.TAG, 'waiting.......', this._player.video.currentTime);\n      this._seekToBufferStart();\n      var playList = Object.keys(this._playlist.list);\n      var playListLen = playList.length;\n      if (!playListLen) {\n        return;\n      }\n\n      for (var i = 0; i < playListLen; i++) {\n        if (this.container.currentTime * 1000 < parseInt(playList[i])) {\n          end = false;\n        }\n      }\n      if (end) {\n        var ts = this._playlist.getTs(this.container.currentTime * 1000);\n        if (!ts) {\n          this._player.emit('ended');\n          this.mse.endOfStream();\n        } else {\n          if (ts.downloaded) {\n            this._player.emit('ended');\n            this.mse.endOfStream();\n          }\n        }\n      }\n    }\n  }, {\n    key: '_seekToBufferStart',\n    value: function _seekToBufferStart() {\n      var video = this._player.video;\n      var buffered = video.buffered;\n      var range = [0, 0];\n      var currentTime = video.currentTime;\n      if (buffered) {\n        for (var i = 0, len = buffered.length; i < len; i++) {\n          range[0] = buffered.start(i);\n          range[1] = buffered.end(i);\n          if (range[0] <= currentTime && currentTime <= range[1]) {\n            return;\n          }\n        }\n      }\n\n      var bufferStart = range[0];\n\n      if (currentTime === 0 && currentTime < bufferStart && Math.abs(currentTime - bufferStart) < 5) {\n        video.currentTime = bufferStart;\n      }\n    }\n  }, {\n    key: '_checkEnd',\n    value: function _checkEnd() {\n      var video = this._player.video;\n      var buffered = video.buffered;\n      var len = buffered.length;\n      if (!len) return;\n      var end = buffered.end(len - 1);\n      if (Math.abs(end - video.duration) < 1) {\n        this.mse.endOfStream();\n      }\n    }\n  }, {\n    key: '_onUpdateEnd',\n    value: function _onUpdateEnd() {\n      this._checkEnd();\n      this._seekToBufferStart();\n      this._preload(this._player.currentTime);\n    }\n  }, {\n    key: '_onTimeUpdate',\n    value: function _onTimeUpdate() {\n      this._seekToBufferStart();\n      // this.cleanBuffer()\n      this._preload(this._player.currentTime);\n    }\n  }, {\n    key: '_onDemuxComplete',\n    value: function _onDemuxComplete() {\n      this.emit(REMUX_EVENTS.REMUX_MEDIA, 'ts');\n    }\n  }, {\n    key: '_handleSEIParsed',\n    value: function _handleSEIParsed(sei) {\n      this._player.emit('SEI_PARSED', sei);\n    }\n  }, {\n    key: '_onMetadataParsed',\n    value: function _onMetadataParsed(type) {\n      try {\n        var m = this._tracks[type + 'Track'].meta;\n        logger.warn(this.TAG, 'meta detect or changed , ', type, Object.assign({}, m));\n      } catch (e) {}\n      var duration = parseInt(this._playlist.duration);\n      if (type === 'video') {\n        this._context.mediaInfo.hasVideo = true;\n        this._tracks.videoTrack.meta.duration = duration;\n      } else if (type === 'audio') {\n        this._context.mediaInfo.hasAudio = true;\n        this._tracks.audioTrack.meta.duration = duration;\n      }\n      this.emit(REMUX_EVENTS.REMUX_METADATA, type);\n    }\n  }, {\n    key: '_onMediaSegment',\n    value: function _onMediaSegment() {\n      if (Object.keys(this.mse.sourceBuffers).length < 1) {\n        this.mse.addSourceBuffers();\n      }\n\n      this.mse.doAppend();\n    }\n  }, {\n    key: '_onInitSegment',\n    value: function _onInitSegment() {\n      this.mse.addSourceBuffers();\n    }\n  }, {\n    key: '_onLoaderCompete',\n    value: function _onLoaderCompete(buffer) {\n      if (buffer.TAG === 'M3U8_BUFFER') {\n        this.m3u8Text = buffer.shift();\n        try {\n          var mdata = M3U8Parser.parse(this.m3u8Text, this.url);\n          this._playlist.pushM3U8(mdata);\n        } catch (error) {\n          this._onError('M3U8_PARSER_ERROR', 'PLAYLIST', error, true);\n        }\n        if (this._playlist.encrypt && this._playlist.encrypt.uri && !this._playlist.encrypt.key) {\n          this._context.registry('DECRYPT_BUFFER', XgBuffer)();\n          this._context.registry('KEY_BUFFER', XgBuffer)();\n          this._tsloader.buffer = 'DECRYPT_BUFFER';\n          this._keyLoader = this._context.registry('KEY_LOADER', FetchLoader)({ buffer: 'KEY_BUFFER', readtype: 3 });\n          this.emitTo('KEY_LOADER', LOADER_EVENTS.LADER_START, this._playlist.encrypt.uri);\n        } else {\n          if (!this.preloadTime) {\n            if (this._playlist.targetduration) {\n              this.preloadTime = this._playlist.targetduration;\n              this.mse.preloadTime = this._playlist.targetduration;\n            } else {\n              this.preloadTime = 5;\n              this.mse.preloadTime = 5;\n            }\n          }\n          // 起播分片 < 0.5s的过滤掉\n          var frag = this._playlist.getTs((this._player.currentTime + 0.5) * 1000);\n          if (frag) {\n            this._logDownSegment(frag);\n            this._playlist.downloading(frag.url, true);\n            this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, frag.url);\n          } else {\n            if (this.retrytimes > 0) {\n              this.retrytimes--;\n              this.emitTo('M3U8_LOADER', LOADER_EVENTS.LADER_START, this.url);\n            }\n          }\n        }\n      } else if (buffer.TAG === 'TS_BUFFER') {\n        this._playlist.downloaded(this._tsloader.url, true);\n        this._demuxer.demux(Object.assign({ url: this._tsloader.url }, this._playlist._ts[this._tsloader.url]), true);\n        this._preload(this.mse.container.currentTime);\n      } else if (buffer.TAG === 'DECRYPT_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.downloaded(this._tsloader.url, true);\n        this.emitTo('CRYPTO', CRYTO_EVENTS.START_DECRYPT, Object.assign({ url: this._tsloader.url }, this._playlist._ts[this._tsloader.url]));\n      } else if (buffer.TAG === 'KEY_BUFFER') {\n        this.retrytimes = this.configs.retrytimes || 3;\n        this._playlist.encrypt.key = buffer.shift();\n        this._crypto = this._context.registry('CRYPTO', Crypto)({\n          key: this._playlist.encrypt.key,\n          iv: this._playlist.encrypt.ivb,\n          method: this._playlist.encrypt.method,\n          inputbuffer: 'DECRYPT_BUFFER',\n          outputbuffer: 'TS_BUFFER'\n        });\n\n        this._crypto.on(CRYTO_EVENTS.DECRYPTED, this._onDcripted.bind(this));\n\n        var _frag = this._playlist.getTs();\n        if (_frag) {\n          this._playlist.downloading(_frag.url, true);\n          this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, _frag.url);\n        } else {\n          if (this.retrytimes > 0) {\n            this.retrytimes--;\n            this.emitTo('M3U8_LOADER', LOADER_EVENTS.LADER_START, this.url);\n          }\n        }\n      }\n    }\n  }, {\n    key: '_onDcripted',\n    value: function _onDcripted() {\n      this.emit(DEMUX_EVENTS.DEMUX_START);\n    }\n  }, {\n    key: 'seek',\n    value: function seek(time) {\n      var video = this._player.video;\n\n\n      for (var i = 0; i < video.buffered.length; i++) {\n        if (time >= video.buffered.start(i) && time < video.buffered.end(i)) {\n          // this._playlist.clearDownloaded();\n          return;\n        }\n      }\n\n      logger.warn(this.TAG, 'seek: ', time, 'tsloading:', this._tsloader.loading);\n\n      // 连续seek,匹配的是同一个分片且正在加载,tsloader不销毁\n      var frag = this._playlist.getTs((time + 0.5) * 1000);\n      if (frag && this._tsloader.loading && this._tsloader.url === frag.url) return;\n\n      this._lastSeekTime = time;\n      this._tsloader.destroy();\n      this._tsloader = this._context.registry('TS_LOADER', FetchLoader)({ buffer: 'TS_BUFFER', readtype: 3 });\n      if (this._presource.sources.video) {\n        this._presource.sources.video.data = [];\n      }\n      if (this._presource.sources.audio) {\n        this._presource.sources.audio.data = [];\n      }\n      if (this._tracks.audioTrack) {\n        this._tracks.audioTrack.samples = [];\n      }\n      if (this._tracks.videoTrack) {\n        this._tracks.videoTrack.samples = [];\n      }\n\n      if (this._compat) {\n        this._compat.reset();\n      }\n\n      if (this._tsBuffer) {\n        this._tsBuffer.array = [];\n        this._tsBuffer.length = 0;\n        this._tsBuffer.offset = 0;\n      }\n      this._playlist.clearDownloaded();\n      this._context.seek(time);\n      this._preload(time);\n    }\n  }, {\n    key: 'replay',\n    value: function replay() {\n      this._compat.reset();\n      this._playlist.clearDownloaded();\n    }\n  }, {\n    key: 'load',\n    value: function load(url) {\n      this.url = url;\n      this.emitTo('M3U8_LOADER', LOADER_EVENTS.LADER_START, url, null, 0);\n    }\n  }, {\n    key: '_preload',\n    value: function _preload(time) {\n      time = Math.floor(time);\n      if (this._tsloader.loading) {\n        return;\n      }\n      logger.log(this.TAG, 'preload: time=', time);\n      var video = this.mse.container;\n      // Get current time range\n      var currentbufferend = -1;\n      if (!time && video.buffered.length) {\n        time = video.buffered.start(0);\n      }\n\n      for (var i = 0; i < video.buffered.length; i++) {\n        if (time >= Math.floor(video.buffered.start(i)) && time <= Math.ceil(video.buffered.end(i))) {\n          currentbufferend = video.buffered.end(i);\n        }\n      }\n\n      if (currentbufferend < 0) {\n        var frag = this._playlist.getTs((time + 0.5) * 1000); // FIXME: Last frame buffer shortens duration\n        if (frag && frag.downloaded) {\n          frag = this._playlist.getTs(frag.time + frag.duration);\n        }\n        if (frag && !frag.downloading && !frag.downloaded) {\n          this._logDownSegment(frag);\n          this._playlist.downloading(frag.url, true);\n          this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, frag.url);\n        }\n      } else if (currentbufferend < time + this.preloadTime) {\n        var _frag2 = this._playlist.getLastDownloadedTs() || this._playlist.getTs(currentbufferend * 1000);\n\n        if (!_frag2) {\n          return;\n        }\n\n        // let fragend = frag ? (frag.time + frag.duration) / 1000 : 0;\n\n        var curTime = _frag2.time + _frag2.duration;\n        var curFragTime = _frag2.time;\n\n        if (_frag2.downloaded) {\n          var loopMax = 1000;\n          while (loopMax-- > 0) {\n            curTime += 10;\n            _frag2 = this._playlist.getTs(curTime);\n            if (!_frag2 || _frag2.time > curFragTime) {\n              break;\n            }\n          }\n        }\n\n        if (_frag2 && !_frag2.downloading && !_frag2.downloaded) {\n          this._logDownSegment(_frag2);\n          this._playlist.downloading(_frag2.url, true);\n          this.emitTo('TS_LOADER', LOADER_EVENTS.LADER_START, _frag2.url);\n        }\n      }\n    }\n  }, {\n    key: 'cleanBuffer',\n    value: function cleanBuffer() {\n      var _this = this;\n\n      var time = this._player.currentTime;\n\n      var video = this._player.video;\n      var buffered = video.buffered;\n\n      if (!buffered || !buffered.length) {\n        return;\n      }\n\n      var range = [0, 0];\n      var currentTime = video.currentTime;\n      if (buffered) {\n        for (var i = 0, len = buffered.length; i < len; i++) {\n          range[0] = buffered.start(i);\n          range[1] = buffered.end(i);\n          if (range[0] <= currentTime && currentTime <= range[1]) {\n            break;\n          }\n        }\n      }\n\n      var bufferStart = range[0];\n      var bufferEnd = range[1];\n\n      if (time - bufferStart > 10 || buffered.length > 1) {\n        this.mse.remove(Math.max(Math.min(time - 10, bufferEnd - 10), 0.1), 0);\n\n        this.bufferClearTimer = setTimeout(function () {\n          _this.bufferClearTimer = null;\n        }, 5000);\n      }\n    }\n  }, {\n    key: 'destory',\n    value: function destory() {\n      this.configs = {};\n      this.url = '';\n      this.sequence = 0;\n      this._playlist = null;\n      this.retrytimes = 3;\n      this.container = undefined;\n      this.preloadTime = 5;\n      this._lastSeekTime = 0;\n      this.m3u8Text = null;\n      this.mse = null;\n\n      this.off(LOADER_EVENTS.LOADER_COMPLETE, this._onLoaderCompete);\n\n      this.off(LOADER_EVENTS.LOADER_ERROR, this._onLoadError);\n\n      this.off(REMUX_EVENTS.INIT_SEGMENT, this._onInitSegment);\n\n      this.off(REMUX_EVENTS.MEDIA_SEGMENT, this._onMediaSegment);\n\n      this.off(DEMUX_EVENTS.METADATA_PARSED, this._onMetadataParsed);\n\n      this.off(DEMUX_EVENTS.DEMUX_COMPLETE, this._onDemuxComplete);\n\n      this.off('TIME_UPDATE', this._onTimeUpdate);\n\n      this.off('WAITING', this._onWaiting);\n    }\n  }, {\n    key: '_logDownSegment',\n    value: function _logDownSegment(frag) {\n      if (!frag) return;\n      logger.groupEnd();\n      logger.group(this.TAG, 'load ' + frag.id + ': [' + frag.time / 1000 + ' , ' + (frag.time + frag.duration) / 1000 + '], downloading: ' + frag.downloading + ' , donwloaded: ' + frag.downloaded);\n    }\n  }]);\n\n  return HlsVodController;\n}();\n\nexport default HlsVodController;","var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _set = function set(object, property, value, receiver) { var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent !== null) { set(parent, property, value, receiver); } } else if (\"value\" in desc && desc.writable) { desc.value = value; } else { var setter = desc.set; if (setter !== undefined) { setter.call(receiver, value); } } return value; };\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nimport Player from 'xgplayer';\nimport { EVENTS, common, Context } from 'xgplayer-helper-utils';\nimport HlsVodController from './hls-vod';\n\nvar debounce = common.debounce;\n\nvar HlsAllowedEvents = EVENTS.HlsAllowedEvents;\nvar REMUX_EVENTS = EVENTS.REMUX_EVENTS;\nvar HLS_EVENTS = EVENTS.HLS_EVENTS;\nvar MSE_EVENTS = EVENTS.MSE_EVENTS;\n\nvar HlsVodPlayer = function (_Player) {\n  _inherits(HlsVodPlayer, _Player);\n\n  function HlsVodPlayer(options) {\n    _classCallCheck(this, HlsVodPlayer);\n\n    var _this = _possibleConstructorReturn(this, (HlsVodPlayer.__proto__ || Object.getPrototypeOf(HlsVodPlayer)).call(this, options));\n\n    _this.hlsOps = {};\n    _this.util = Player.util;\n    _this.util.deepCopy(_this.hlsOps, options);\n    _this._handleSetCurrentTime = debounce(_this._handleSetCurrentTime.bind(_this), 200);\n    _this.onWaiting = _this.onWaiting.bind(_this);\n    // this.started = false;\n    return _this;\n  }\n\n  _createClass(HlsVodPlayer, [{\n    key: '_handleSetCurrentTime',\n    value: function _handleSetCurrentTime(time) {\n      time = parseFloat(time);\n      if (time === this.currentTime) return;\n      _set(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'currentTime', time, this);\n      if (this._context) {\n        this.__core__.seek(time);\n      }\n    }\n  }, {\n    key: 'play',\n    value: function play() {\n      var _this2 = this;\n\n      return this.video.play().catch(function (e) {\n        if (e && e.code === 20) {\n          // fix: chrome The play() request was interrupted by a new load request.\n          _this2.once('canplay', function () {\n            _this2.video.play();\n          });\n        }\n      });\n    }\n  }, {\n    key: 'replay',\n    value: function replay() {\n      var _this3 = this;\n\n      this.__core__.mse.cleanBuffers().then(function () {\n        _this3.__core__.replay();\n        _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'replay', _this3).call(_this3);\n      });\n    }\n  }, {\n    key: '_initEvents',\n    value: function _initEvents() {\n      var _this4 = this;\n\n      this.__core__.once(REMUX_EVENTS.INIT_SEGMENT, function () {\n        var mse = _this4.__core__.mse;\n        _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'start', _this4).call(_this4, mse.url);\n      });\n\n      this.__core__.once(HLS_EVENTS.RETRY_TIME_EXCEEDED, function () {\n        _this4.emit('error', new Player.Errors('network', _this4.config.url));\n      });\n\n      this.__core__.on(MSE_EVENTS.SOURCE_UPDATE_END, function () {\n        _this4._onSourceUpdateEnd();\n      });\n\n      this.once('canplay', function () {\n        if (_this4.config.autoplay) {\n          _this4.play();\n        }\n      });\n    }\n  }, {\n    key: 'initHlsBackupEvents',\n    value: function initHlsBackupEvents(hls, ctx) {\n      var _this5 = this;\n\n      hls.once(REMUX_EVENTS.INIT_SEGMENT, function () {\n        if (!_this5.video.src) {\n          console.log('挂载 src blob');\n          var mse = hls.mse;\n          _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'start', _this5).call(_this5, mse.url);\n        }\n      });\n      hls.once(EVENTS.REMUX_EVENTS.MEDIA_SEGMENT, function () {\n        _this5.__core__ = hls;\n        _this5.__core__.mse.cleanBuffers().then(function () {\n          _this5.__core__.mse.resetContext(ctx);\n          _this5.__core__.mse.doAppend();\n          _this5._context = ctx;\n        });\n      });\n\n      hls.once(EVENTS.LOADER_EVENTS.LOADER_ERROR, function () {\n        ctx.destroy();\n      });\n    }\n  }, {\n    key: '_onSourceUpdateEnd',\n    value: function _onSourceUpdateEnd() {\n      if (this.video.readyState === 1 || this.video.readyState === 2) {\n        var _detectBufferGap = this.detectBufferGap(),\n            gap = _detectBufferGap.gap,\n            start = _detectBufferGap.start,\n            method = _detectBufferGap.method;\n\n        if (gap) {\n          if (method === 'ceil' && this.currentTime < Math[method](start)) {\n            this.currentTime = Math[method](start);\n          } else if (method === 'floor' && this.currentTime > Math[method](start)) {\n            this.currentTime = Math[method](start);\n          }\n        }\n      }\n    }\n  }, {\n    key: 'start',\n    value: function start() {\n      var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.config.url;\n\n      if (!url || this.started) {\n        return;\n      }\n      if (!this._context) {\n        this._context = new Context(this, this.hlsOps, HlsAllowedEvents);\n      }\n\n      this.__core__ = this._context.registry('HLS_VOD_CONTROLLER', HlsVodController)({ player: this, container: this.video, preloadTime: this.config.preloadTime });\n      this._context.init();\n      this.__core__.load(url);\n      this._initEvents();\n\n      this.started = true;\n    }\n  }, {\n    key: 'switchURL',\n    value: function switchURL(url) {\n      this.config.url = url;\n      var context = new Context(this, this.hlsOps, HlsAllowedEvents);\n      var hls = context.registry('HLS_VOD_CONTROLLER', HlsVodController)({\n        player: this,\n        container: this.video,\n        mse: this.__core__.mse,\n        preloadTime: this.config.preloadTime\n      });\n      this.newContext = context;\n      this.newHls = hls;\n      context.init();\n      this._context.destroy();\n      this.initHlsBackupEvents(hls, context);\n      this.__core__.mse.cleanBuffers().then(function () {\n        hls.load(url);\n      });\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy() {\n      var _this6 = this;\n\n      return new Promise(function (resolve) {\n        if (_this6.__core__ && _this6.__core__.mse) {\n          _this6.__core__.mse.destroy().then(function () {\n            if (_this6._context) {\n              _this6._context.destroy();\n            }\n            _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'destroy', _this6).call(_this6);\n            resolve();\n          });\n          setTimeout(function () {\n            resolve();\n          }, 100);\n        } else {\n          _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'destroy', _this6).call(_this6);\n          setTimeout(function () {\n            resolve();\n          }, 50);\n        }\n      });\n    }\n  }, {\n    key: 'detectBufferGap',\n    value: function detectBufferGap() {\n      var video = this.video;\n\n      var result = {\n        gap: false,\n        start: -1\n      };\n      var isStartPlay = this.currentTime === 0;\n      for (var i = 0; i < video.buffered.length; i++) {\n        var bufferStart = video.buffered.start(i);\n        var bufferEnd = video.buffered.end(i);\n        if ((!video.played.length || bufferStart <= this.currentTime && bufferEnd - this.currentTime >= 0.5) && !isStartPlay) {\n          break;\n        }\n        var startGap = bufferStart - this.currentTime;\n        var endGap = this.currentTime - bufferEnd;\n        if (startGap > 0.01 && (startGap <= 2 || isStartPlay)) {\n          result = {\n            gap: true,\n            start: bufferStart,\n            method: 'ceil'\n          };\n          break;\n        } else if (endGap > 0.1 && (endGap <= 2 || isStartPlay)) {\n          result = {\n            gap: true,\n            start: bufferEnd,\n            method: 'floor'\n          };\n        } else {\n          result = {\n            gap: false,\n            start: -1\n          };\n        }\n      }\n\n      return result;\n    }\n  }, {\n    key: 'currentTime',\n    get: function get() {\n      return _get(HlsVodPlayer.prototype.__proto__ || Object.getPrototypeOf(HlsVodPlayer.prototype), 'currentTime', this);\n    },\n    set: function set(time) {\n      this._handleSetCurrentTime(time);\n    }\n  }, {\n    key: 'src',\n    get: function get() {\n      return this.currentSrc;\n    },\n    set: function set(url) {\n      var _this7 = this;\n\n      this.onWaiting = this.onWaiting.bind(this);\n      this.__core__.mse.destroy().then(function () {\n        _this7._context.destroy();\n        _this7._context = null;\n        _this7.video.src = '';\n        _this7.video.load();\n        _this7.started = false;\n        _this7.video.currentTime = 0;\n\n        if (!_this7.paused) {\n          _this7.pause();\n          _this7.once('canplay', function () {\n            _this7.play();\n          });\n        } else {\n          _this7.play();\n        }\n\n        _this7.start(url);\n      });\n    }\n  }, {\n    key: 'context',\n    get: function get() {\n      return this._context;\n    }\n  }], [{\n    key: 'isSupported',\n    value: function isSupported() {\n      return window.MediaSource && window.MediaSource.isTypeSupported('video/mp4; codecs=\"avc1.42E01E,mp4a.40.2\"');\n    }\n  }, {\n    key: 'install',\n    value: function install(name, plugin) {\n      return Player.install(name, plugin);\n    }\n  }]);\n\n  return HlsVodPlayer;\n}(Player);\n\nexport default HlsVodPlayer;","/**\n * @param {number} num\n * @param {number} fixed\n * @return {number}\n */\nexport default (function (fn, wait) {\n  var lastTime = Date.now();\n  var timer = null;\n  var isFirstTime = true;\n\n  return function () {\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    var now = Date.now();\n    if (isFirstTime) {\n      lastTime = Date.now();\n      isFirstTime = false;\n      fn.apply(undefined, args);\n    }\n    if (now - lastTime > wait) {\n      lastTime = now;\n      fn.apply(undefined, args);\n    } else {\n      if (timer) {\n        window.clearTimeout(timer);\n      }\n      timer = setTimeout(function () {\n        fn.apply(undefined, args);\n      }, wait);\n    }\n  };\n});","import HlsLivePlayer from 'xgplayer-hls-live';\nimport HlsVodPlayer from 'xgplayer-hls-vod';\nimport Player from 'xgplayer';\n\nexport default class HlsPlayer {\n  constructor (config) {\n    if (config.isLive) {\n      return new HlsLivePlayer(config)\n    } else {\n      return new HlsVodPlayer(config)\n    }\n  }\n\n  static isSupported () {\n    return window.MediaSource &&\n      window.MediaSource.isTypeSupported('video/mp4; codecs=\"avc1.42E01E,mp4a.40.2\"');\n  }\n\n  static install (name, plugin) {\n    return Player.install(name, plugin)\n  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