hls.js/dist/hls.light.mjs.map

JavaScript HLS client using MediaSourceExtension

{"version":3,"file":"hls.light.mjs.map","sources":["src/polyfills/number.ts","src/errors.ts","src/events.ts","src/types/loader.ts","src/utils/ewma.ts","src/utils/ewma-bandwidth-estimator.ts","src/utils/logger.ts","src/empty-es.js","src/utils/mediasource-helper.ts","node_modules/@svta/common-media-library/dist/utils/utf8ArrayToStr.js","src/utils/hex.ts","node_modules/url-toolkit/src/url-toolkit.js","src/loader/load-stats.ts","src/loader/fragment.ts","src/utils/mp4-tools.ts","src/utils/codecs.ts","src/types/level.ts","src/utils/hdr.ts","src/utils/safe-json-stringify.ts","src/utils/rendition-helper.ts","src/controller/abr-controller.ts","src/utils/binary-search.ts","src/controller/fragment-finders.ts","src/utils/error-helper.ts","src/controller/error-controller.ts","src/utils/attr-list.ts","src/loader/date-range.ts","src/loader/level-details.ts","src/utils/arrays.ts","src/crypt/decrypter-aes-mode.ts","src/utils/encryption-methods-util.ts","src/loader/level-key.ts","src/loader/m3u8-parser.ts","src/utils/level-helper.ts","src/controller/base-playlist-controller.ts","src/controller/fragment-tracker.ts","src/crypt/aes-crypto.ts","src/crypt/aes-decryptor.ts","src/crypt/fast-aes-key.ts","src/crypt/decrypter.ts","src/loader/fragment-loader.ts","src/task-loop.ts","src/types/transmuxer.ts","src/utils/buffer-helper.ts","src/utils/discontinuities.ts","src/utils/event-listener-helper.ts","src/utils/time-ranges.ts","src/controller/base-stream-controller.ts","src/controller/buffer-operation-queue.ts","src/controller/buffer-controller.ts","src/controller/cap-level-controller.ts","src/controller/content-steering-controller.ts","src/controller/fps-controller.ts","node_modules/@svta/common-media-library/dist/utils/uuid.js","node_modules/eventemitter3/index.js","src/demux/chunk-cache.ts","node_modules/@svta/common-media-library/dist/id3/util/isId3Footer.js","node_modules/@svta/common-media-library/dist/id3/util/isId3Header.js","node_modules/@svta/common-media-library/dist/id3/util/readId3Size.js","node_modules/@svta/common-media-library/dist/id3/getId3Data.js","src/demux/audio/adts.ts","node_modules/@svta/common-media-library/dist/id3/canParseId3.js","node_modules/@svta/common-media-library/dist/id3/util/toArrayBuffer.js","node_modules/@svta/common-media-library/dist/id3/util/utf8.js","node_modules/@svta/common-media-library/dist/id3/util/decodeId3ImageFrame.js","node_modules/@svta/common-media-library/dist/id3/util/decodeId3PrivFrame.js","node_modules/@svta/common-media-library/dist/id3/util/decodeId3TextFrame.js","node_modules/@svta/common-media-library/dist/id3/util/decodeId3UrlFrame.js","node_modules/@svta/common-media-library/dist/id3/util/decodeId3Frame.js","node_modules/@svta/common-media-library/dist/id3/util/getId3FrameData.js","node_modules/@svta/common-media-library/dist/id3/getId3Frames.js","node_modules/@svta/common-media-library/dist/id3/isId3TimestampFrame.js","node_modules/@svta/common-media-library/dist/id3/util/readId3Timestamp.js","node_modules/@svta/common-media-library/dist/id3/getId3Timestamp.js","src/types/demuxer.ts","src/demux/dummy-demuxed-track.ts","src/demux/audio/base-audio-demuxer.ts","src/demux/audio/mpegaudio.ts","src/demux/audio/aacdemuxer.ts","src/demux/audio/dolby.ts","src/demux/audio/mp3demuxer.ts","src/demux/mp4demuxer.ts","src/demux/sample-aes.ts","src/demux/video/base-video-parser.ts","src/demux/video/exp-golomb.ts","src/demux/video/avc-video-parser.ts","src/demux/tsdemuxer.ts","src/remux/aac-helper.ts","src/remux/mp4-generator.ts","src/utils/timescale-conversion.ts","src/remux/mp4-remuxer.ts","src/remux/passthrough-remuxer.ts","src/demux/transmuxer.ts","src/utils/fetch-loader.ts","src/utils/xhr-loader.ts","src/config.ts","src/controller/gap-controller.ts","src/utils/texttrack-utils.ts","src/controller/id3-track-controller.ts","src/controller/latency-controller.ts","src/controller/level-controller.ts","src/version.ts","src/demux/inject-worker.ts","src/demux/transmuxer-interface.ts","src/is-supported.ts","src/controller/stream-controller.ts","src/loader/key-loader.ts","src/loader/playlist-loader.ts","src/utils/mediacapabilities-helper.ts","src/hls.ts"],"sourcesContent":["// https://caniuse.com/mdn-javascript_builtins_number_isfinite\nexport const isFiniteNumber =\n  Number.isFinite ||\n  function (value) {\n    return typeof value === 'number' && isFinite(value);\n  };\n\n// https://caniuse.com/mdn-javascript_builtins_number_issafeinteger\nexport const isSafeInteger =\n  Number.isSafeInteger ||\n  function (value) {\n    return typeof value === 'number' && Math.abs(value) <= MAX_SAFE_INTEGER;\n  };\n\nexport const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;\n","export enum ErrorTypes {\n  // Identifier for a network error (loading error / timeout ...)\n  NETWORK_ERROR = 'networkError',\n  // Identifier for a media Error (video/parsing/mediasource error)\n  MEDIA_ERROR = 'mediaError',\n  // EME (encrypted media extensions) errors\n  KEY_SYSTEM_ERROR = 'keySystemError',\n  // Identifier for a mux Error (demuxing/remuxing)\n  MUX_ERROR = 'muxError',\n  // Identifier for all other errors\n  OTHER_ERROR = 'otherError',\n}\n\nexport enum ErrorDetails {\n  KEY_SYSTEM_NO_KEYS = 'keySystemNoKeys',\n  KEY_SYSTEM_NO_ACCESS = 'keySystemNoAccess',\n  KEY_SYSTEM_NO_SESSION = 'keySystemNoSession',\n  KEY_SYSTEM_NO_CONFIGURED_LICENSE = 'keySystemNoConfiguredLicense',\n  KEY_SYSTEM_LICENSE_REQUEST_FAILED = 'keySystemLicenseRequestFailed',\n  KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED = 'keySystemServerCertificateRequestFailed',\n  KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED = 'keySystemServerCertificateUpdateFailed',\n  KEY_SYSTEM_SESSION_UPDATE_FAILED = 'keySystemSessionUpdateFailed',\n  KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED = 'keySystemStatusOutputRestricted',\n  KEY_SYSTEM_STATUS_INTERNAL_ERROR = 'keySystemStatusInternalError',\n  KEY_SYSTEM_DESTROY_MEDIA_KEYS_ERROR = 'keySystemDestroyMediaKeysError',\n  KEY_SYSTEM_DESTROY_CLOSE_SESSION_ERROR = 'keySystemDestroyCloseSessionError',\n  KEY_SYSTEM_DESTROY_REMOVE_SESSION_ERROR = 'keySystemDestroyRemoveSessionError',\n  // Identifier for a manifest load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  MANIFEST_LOAD_ERROR = 'manifestLoadError',\n  // Identifier for a manifest load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  MANIFEST_LOAD_TIMEOUT = 'manifestLoadTimeOut',\n  // Identifier for a manifest parsing error - data: { url : faulty URL, reason : error reason}\n  MANIFEST_PARSING_ERROR = 'manifestParsingError',\n  // Identifier for a manifest with only incompatible codecs error - data: { url : faulty URL, reason : error reason}\n  MANIFEST_INCOMPATIBLE_CODECS_ERROR = 'manifestIncompatibleCodecsError',\n  // Identifier for a level which contains no fragments - data: { url: faulty URL, reason: \"no fragments found in level\", level: index of the bad level }\n  LEVEL_EMPTY_ERROR = 'levelEmptyError',\n  // Identifier for a level load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  LEVEL_LOAD_ERROR = 'levelLoadError',\n  // Identifier for a level load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  LEVEL_LOAD_TIMEOUT = 'levelLoadTimeOut',\n  // Identifier for a level parse error - data: { url : faulty URL, error: Error, reason: error message }\n  LEVEL_PARSING_ERROR = 'levelParsingError',\n  // Identifier for a level switch error - data: { level : faulty level Id, event : error description}\n  LEVEL_SWITCH_ERROR = 'levelSwitchError',\n  // Identifier for an audio track load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  AUDIO_TRACK_LOAD_ERROR = 'audioTrackLoadError',\n  // Identifier for an audio track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  AUDIO_TRACK_LOAD_TIMEOUT = 'audioTrackLoadTimeOut',\n  // Identifier for a subtitle track load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  SUBTITLE_LOAD_ERROR = 'subtitleTrackLoadError',\n  // Identifier for a subtitle track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  SUBTITLE_TRACK_LOAD_TIMEOUT = 'subtitleTrackLoadTimeOut',\n  // Identifier for fragment load error - data: { frag : fragment object, response : { code: error code, text: error text }}\n  FRAG_LOAD_ERROR = 'fragLoadError',\n  // Identifier for fragment load timeout error - data: { frag : fragment object}\n  FRAG_LOAD_TIMEOUT = 'fragLoadTimeOut',\n  // Identifier for a fragment decryption error event - data: {id : demuxer Id,frag: fragment object, reason : parsing error description }\n  FRAG_DECRYPT_ERROR = 'fragDecryptError',\n  // Identifier for a fragment parsing error event - data: { id : demuxer Id, reason : parsing error description }\n  // will be renamed DEMUX_PARSING_ERROR and switched to MUX_ERROR in the next major release\n  FRAG_PARSING_ERROR = 'fragParsingError',\n  // Identifier for a fragment or part load skipped because of a GAP tag or attribute\n  FRAG_GAP = 'fragGap',\n  // Identifier for a remux alloc error event - data: { id : demuxer Id, frag : fragment object, bytes : nb of bytes on which allocation failed , reason : error text }\n  REMUX_ALLOC_ERROR = 'remuxAllocError',\n  // Identifier for decrypt key load error - data: { frag : fragment object, response : { code: error code, text: error text }}\n  KEY_LOAD_ERROR = 'keyLoadError',\n  // Identifier for decrypt key load timeout error - data: { frag : fragment object}\n  KEY_LOAD_TIMEOUT = 'keyLoadTimeOut',\n  // Triggered when an exception occurs while adding a sourceBuffer to MediaSource - data : { error : exception , mimeType : mimeType }\n  BUFFER_ADD_CODEC_ERROR = 'bufferAddCodecError',\n  // Triggered when source buffer(s) could not be created using level (manifest CODECS attribute), parsed media, or best guess codec(s) - data: { reason : error reason }\n  BUFFER_INCOMPATIBLE_CODECS_ERROR = 'bufferIncompatibleCodecsError',\n  // Identifier for a buffer append error - data: append error description\n  BUFFER_APPEND_ERROR = 'bufferAppendError',\n  // Identifier for a buffer appending error event - data: appending error description\n  BUFFER_APPENDING_ERROR = 'bufferAppendingError',\n  // Identifier for a buffer stalled error event\n  BUFFER_STALLED_ERROR = 'bufferStalledError',\n  // Identifier for a buffer full event\n  BUFFER_FULL_ERROR = 'bufferFullError',\n  // Identifier for a buffer seek over hole event\n  BUFFER_SEEK_OVER_HOLE = 'bufferSeekOverHole',\n  // Identifier for a buffer nudge on stall (playback is stuck although currentTime is in a buffered area)\n  BUFFER_NUDGE_ON_STALL = 'bufferNudgeOnStall',\n  // Identifier for a Interstitial Asset List load error - data: { url: faulty URL, response: { code: error code, text: error text } }\n  ASSET_LIST_LOAD_ERROR = 'assetListLoadError',\n  // Identifier for a Interstitial Asset List load timeout - data: { url: faulty URL, response: { code: error code, text: error text } }\n  ASSET_LIST_LOAD_TIMEOUT = 'assetListLoadTimeout',\n  // Identifier for a Interstitial Asset List parsing error - data: { url : faulty URL, reason : error reason, response : { code: error code, text: error text }}\n  ASSET_LIST_PARSING_ERROR = 'assetListParsingError',\n  // Identifier for a Interstitial Asset List parsing error - data: { url : faulty URL, reason : error reason, response : { code: error code, text: error text }}\n  INTERSTITIAL_ASSET_ITEM_ERROR = 'interstitialAssetItemError',\n  // Identifier for an internal exception happening inside hls.js while handling an event\n  INTERNAL_EXCEPTION = 'internalException',\n  // Identifier for an internal call to abort a loader\n  INTERNAL_ABORTED = 'aborted',\n  // Triggered when attachMedia fails\n  ATTACH_MEDIA_ERROR = 'attachMediaError',\n  // Uncategorized error\n  UNKNOWN = 'unknown',\n}\n","import type {\n  AssetListLoadedData,\n  AssetListLoadingData,\n  AudioTrackLoadedData,\n  AudioTracksUpdatedData,\n  AudioTrackSwitchedData,\n  AudioTrackSwitchingData,\n  AudioTrackUpdatedData,\n  BackBufferData,\n  BufferAppendedData,\n  BufferAppendingData,\n  BufferCodecsData,\n  BufferCreatedData,\n  BufferEOSData,\n  BufferFlushedData,\n  BufferFlushingData,\n  CuesParsedData,\n  ErrorData,\n  FPSDropData,\n  FPSDropLevelCappingData,\n  FragBufferedData,\n  FragChangedData,\n  FragDecryptedData,\n  FragLoadedData,\n  FragLoadEmergencyAbortedData,\n  FragLoadingData,\n  FragParsedData,\n  FragParsingInitSegmentData,\n  FragParsingMetadataData,\n  FragParsingUserdataData,\n  InitPTSFoundData,\n  InterstitialAssetEndedData,\n  InterstitialAssetErrorData,\n  InterstitialAssetPlayerCreatedData,\n  InterstitialAssetStartedData,\n  InterstitialEndedData,\n  InterstitialsBufferedToBoundaryData,\n  InterstitialsPrimaryResumed,\n  InterstitialStartedData,\n  InterstitialsUpdatedData,\n  KeyLoadedData,\n  KeyLoadingData,\n  LevelLoadedData,\n  LevelLoadingData,\n  LevelPTSUpdatedData,\n  LevelsUpdatedData,\n  LevelSwitchedData,\n  LevelSwitchingData,\n  LevelUpdatedData,\n  LiveBackBufferData,\n  ManifestLoadedData,\n  ManifestLoadingData,\n  ManifestParsedData,\n  MaxAutoLevelUpdatedData,\n  MediaAttachedData,\n  MediaAttachingData,\n  MediaDetachedData,\n  MediaDetachingData,\n  MediaEndedData,\n  NonNativeTextTracksData,\n  SteeringManifestLoadedData,\n  SubtitleFragProcessedData,\n  SubtitleTrackLoadedData,\n  SubtitleTracksUpdatedData,\n  SubtitleTrackSwitchData,\n  SubtitleTrackUpdatedData,\n  TrackLoadingData,\n} from './types/events';\n\nexport enum Events {\n  // Fired before MediaSource is attaching to media element\n  MEDIA_ATTACHING = 'hlsMediaAttaching',\n  // Fired when MediaSource has been successfully attached to media element\n  MEDIA_ATTACHED = 'hlsMediaAttached',\n  // Fired before detaching MediaSource from media element\n  MEDIA_DETACHING = 'hlsMediaDetaching',\n  // Fired when MediaSource has been detached from media element\n  MEDIA_DETACHED = 'hlsMediaDetached',\n  // Fired when HTMLMediaElement dispatches \"ended\" event, or stalls at end of VOD program\n  MEDIA_ENDED = 'hlsMediaEnded',\n  // Fired after playback stall is resolved with playing, seeked, or ended event following BUFFER_STALLED_ERROR\n  STALL_RESOLVED = 'hlsStallResolved',\n  // Fired when the buffer is going to be reset\n  BUFFER_RESET = 'hlsBufferReset',\n  // Fired when we know about the codecs that we need buffers for to push into - data: {tracks : { container, codec, levelCodec, initSegment, metadata }}\n  BUFFER_CODECS = 'hlsBufferCodecs',\n  // fired when sourcebuffers have been created - data: { tracks : tracks }\n  BUFFER_CREATED = 'hlsBufferCreated',\n  // fired when we append a segment to the buffer - data: { segment: segment object }\n  BUFFER_APPENDING = 'hlsBufferAppending',\n  // fired when we are done with appending a media segment to the buffer - data : { parent : segment parent that triggered BUFFER_APPENDING, pending : nb of segments waiting for appending for this segment parent}\n  BUFFER_APPENDED = 'hlsBufferAppended',\n  // fired when the stream is finished and we want to notify the media buffer that there will be no more data - data: { }\n  BUFFER_EOS = 'hlsBufferEos',\n  // fired when all buffers are full to the end of the program, after calling MediaSource.endOfStream() (unless restricted)\n  BUFFERED_TO_END = 'hlsBufferedToEnd',\n  // fired when the media buffer should be flushed - data { startOffset, endOffset }\n  BUFFER_FLUSHING = 'hlsBufferFlushing',\n  // fired when the media buffer has been flushed - data: { }\n  BUFFER_FLUSHED = 'hlsBufferFlushed',\n  // fired to signal that a manifest loading starts - data: { url : manifestURL}\n  MANIFEST_LOADING = 'hlsManifestLoading',\n  // fired after manifest has been loaded - data: { levels : [available quality levels], audioTracks : [ available audio tracks ], url : manifestURL, stats : LoaderStats }\n  MANIFEST_LOADED = 'hlsManifestLoaded',\n  // fired after manifest has been parsed - data: { levels : [available quality levels], firstLevel : index of first quality level appearing in Manifest}\n  MANIFEST_PARSED = 'hlsManifestParsed',\n  // fired when a level switch is requested - data: { level : id of new level }\n  LEVEL_SWITCHING = 'hlsLevelSwitching',\n  // fired when a level switch is effective - data: { level : id of new level }\n  LEVEL_SWITCHED = 'hlsLevelSwitched',\n  // fired when a level playlist loading starts - data: { url : level URL, level : id of level being loaded}\n  LEVEL_LOADING = 'hlsLevelLoading',\n  // fired when a level playlist loading finishes - data: { details : levelDetails object, level : id of loaded level, stats : LoaderStats }\n  LEVEL_LOADED = 'hlsLevelLoaded',\n  // fired when a level's details have been updated based on previous details, after it has been loaded - data: { details : levelDetails object, level : id of updated level }\n  LEVEL_UPDATED = 'hlsLevelUpdated',\n  // fired when a level's PTS information has been updated after parsing a fragment - data: { details : levelDetails object, level : id of updated level, drift: PTS drift observed when parsing last fragment }\n  LEVEL_PTS_UPDATED = 'hlsLevelPtsUpdated',\n  // fired to notify that levels have changed after removing a level - data: { levels : [available quality levels] }\n  LEVELS_UPDATED = 'hlsLevelsUpdated',\n  // fired to notify that audio track lists has been updated - data: { audioTracks : audioTracks }\n  AUDIO_TRACKS_UPDATED = 'hlsAudioTracksUpdated',\n  // fired when an audio track switching is requested - data: { id : audio track id }\n  AUDIO_TRACK_SWITCHING = 'hlsAudioTrackSwitching',\n  // fired when an audio track switch actually occurs - data: { id : audio track id }\n  AUDIO_TRACK_SWITCHED = 'hlsAudioTrackSwitched',\n  // fired when an audio track loading starts - data: { url : audio track URL, id : audio track id }\n  AUDIO_TRACK_LOADING = 'hlsAudioTrackLoading',\n  // fired when an audio track loading finishes - data: { details : levelDetails object, id : audio track id, stats : LoaderStats }\n  AUDIO_TRACK_LOADED = 'hlsAudioTrackLoaded',\n  // fired when an audio tracks's details have been updated based on previous details, after it has been loaded - data: { details : levelDetails object, id : track id }\n  AUDIO_TRACK_UPDATED = 'hlsAudioTrackUpdated',\n  // fired to notify that subtitle track lists has been updated - data: { subtitleTracks : subtitleTracks }\n  SUBTITLE_TRACKS_UPDATED = 'hlsSubtitleTracksUpdated',\n  // fired to notify that subtitle tracks were cleared as a result of stopping the media\n  SUBTITLE_TRACKS_CLEARED = 'hlsSubtitleTracksCleared',\n  // fired when an subtitle track switch occurs - data: { id : subtitle track id }\n  SUBTITLE_TRACK_SWITCH = 'hlsSubtitleTrackSwitch',\n  // fired when a subtitle track loading starts - data: { url : subtitle track URL, id : subtitle track id }\n  SUBTITLE_TRACK_LOADING = 'hlsSubtitleTrackLoading',\n  // fired when a subtitle track loading finishes - data: { details : levelDetails object, id : subtitle track id, stats : LoaderStats }\n  SUBTITLE_TRACK_LOADED = 'hlsSubtitleTrackLoaded',\n  // fired when a subtitle  racks's details have been updated based on previous details, after it has been loaded - data: { details : levelDetails object, id : track id }\n  SUBTITLE_TRACK_UPDATED = 'hlsSubtitleTrackUpdated',\n  // fired when a subtitle fragment has been processed - data: { success : boolean, frag : the processed frag }\n  SUBTITLE_FRAG_PROCESSED = 'hlsSubtitleFragProcessed',\n  // fired when a set of VTTCues to be managed externally has been parsed - data: { type: string, track: string, cues: [ VTTCue ] }\n  CUES_PARSED = 'hlsCuesParsed',\n  // fired when a text track to be managed externally is found - data: { tracks: [ { label: string, kind: string, default: boolean } ] }\n  NON_NATIVE_TEXT_TRACKS_FOUND = 'hlsNonNativeTextTracksFound',\n  // fired when the first timestamp is found - data: { id : demuxer id, initPTS: initPTS, timescale: timescale, frag : fragment object }\n  INIT_PTS_FOUND = 'hlsInitPtsFound',\n  // fired when a fragment loading starts - data: { frag : fragment object }\n  FRAG_LOADING = 'hlsFragLoading',\n  // fired when a fragment loading is progressing - data: { frag : fragment object, { trequest, tfirst, loaded } }\n  // FRAG_LOAD_PROGRESS = 'hlsFragLoadProgress',\n  // Identifier for fragment load aborting for emergency switch down - data: { frag : fragment object }\n  FRAG_LOAD_EMERGENCY_ABORTED = 'hlsFragLoadEmergencyAborted',\n  // fired when a fragment loading is completed - data: { frag : fragment object, payload : fragment payload, stats : LoaderStats }\n  FRAG_LOADED = 'hlsFragLoaded',\n  // fired when a fragment has finished decrypting - data: { id : demuxer id, frag: fragment object, payload : fragment payload, stats : { tstart, tdecrypt } }\n  FRAG_DECRYPTED = 'hlsFragDecrypted',\n  // fired when Init Segment has been extracted from fragment - data: { id : demuxer id, frag: fragment object, moov : moov MP4 box, codecs : codecs found while parsing fragment }\n  FRAG_PARSING_INIT_SEGMENT = 'hlsFragParsingInitSegment',\n  // fired when parsing sei text is completed - data: { id : demuxer id, frag: fragment object, samples : [ sei samples pes ] }\n  FRAG_PARSING_USERDATA = 'hlsFragParsingUserdata',\n  // fired when parsing id3 is completed - data: { id : demuxer id, frag: fragment object, samples : [ id3 samples pes ] }\n  FRAG_PARSING_METADATA = 'hlsFragParsingMetadata',\n  // fired when data have been extracted from fragment - data: { id : demuxer id, frag: fragment object, data1 : moof MP4 box or TS fragments, data2 : mdat MP4 box or null}\n  // FRAG_PARSING_DATA = 'hlsFragParsingData',\n  // fired when fragment parsing is completed - data: { id : demuxer id, frag: fragment object }\n  FRAG_PARSED = 'hlsFragParsed',\n  // fired when fragment remuxed MP4 boxes have all been appended into SourceBuffer - data: { id : demuxer id, frag : fragment object, stats : LoaderStats }\n  FRAG_BUFFERED = 'hlsFragBuffered',\n  // fired when fragment matching with current media position is changing - data : { id : demuxer id, frag : fragment object }\n  FRAG_CHANGED = 'hlsFragChanged',\n  // Identifier for a FPS drop event - data: { currentDropped, currentDecoded, totalDroppedFrames }\n  FPS_DROP = 'hlsFpsDrop',\n  // triggered when FPS drop triggers auto level capping - data: { level, droppedLevel }\n  FPS_DROP_LEVEL_CAPPING = 'hlsFpsDropLevelCapping',\n  // triggered when maxAutoLevel changes - data { autoLevelCapping, levels, maxAutoLevel, minAutoLevel, maxHdcpLevel }\n  MAX_AUTO_LEVEL_UPDATED = 'hlsMaxAutoLevelUpdated',\n  // Identifier for an error event - data: { type : error type, details : error details, fatal : if true, hls.js cannot/will not try to recover, if false, hls.js will try to recover,other error specific data }\n  ERROR = 'hlsError',\n  // fired when hls.js instance starts destroying. Different from MEDIA_DETACHED as one could want to detach and reattach a media to the instance of hls.js to handle mid-rolls for example - data: { }\n  DESTROYING = 'hlsDestroying',\n  // fired when a decrypt key loading starts - data: { frag : fragment object }\n  KEY_LOADING = 'hlsKeyLoading',\n  // fired when a decrypt key loading is completed - data: { frag : fragment object, keyInfo : KeyLoaderInfo }\n  KEY_LOADED = 'hlsKeyLoaded',\n  // deprecated; please use BACK_BUFFER_REACHED - data : { bufferEnd: number }\n  LIVE_BACK_BUFFER_REACHED = 'hlsLiveBackBufferReached',\n  // fired when the back buffer is reached as defined by the backBufferLength config option - data : { bufferEnd: number }\n  BACK_BUFFER_REACHED = 'hlsBackBufferReached',\n  // fired after steering manifest has been loaded - data: { steeringManifest: SteeringManifest object, url: steering manifest URL }\n  STEERING_MANIFEST_LOADED = 'hlsSteeringManifestLoaded',\n  // fired when asset list has begun loading\n  ASSET_LIST_LOADING = 'hlsAssetListLoading',\n  // fired when a valid asset list is loaded\n  ASSET_LIST_LOADED = 'hlsAssetListLoaded',\n  // fired when the list of Interstitial Events and Interstitial Schedule is updated\n  INTERSTITIALS_UPDATED = 'hlsInterstitialsUpdated',\n  // fired when the buffer reaches an Interstitial Schedule boundary (both Primary segments and Interstitial Assets)\n  INTERSTITIALS_BUFFERED_TO_BOUNDARY = 'hlsInterstitialsBufferedToBoundary',\n  // fired when a player instance for an Interstitial Asset has been created\n  INTERSTITIAL_ASSET_PLAYER_CREATED = 'hlsInterstitialAssetPlayerCreated',\n  // Interstitial playback started\n  INTERSTITIAL_STARTED = 'hlsInterstitialStarted',\n  // InterstitialAsset playback started\n  INTERSTITIAL_ASSET_STARTED = 'hlsInterstitialAssetStarted',\n  // InterstitialAsset playback ended\n  INTERSTITIAL_ASSET_ENDED = 'hlsInterstitialAssetEnded',\n  // InterstitialAsset playback errored\n  INTERSTITIAL_ASSET_ERROR = 'hlsInterstitialAssetError',\n  // Interstitial playback ended\n  INTERSTITIAL_ENDED = 'hlsInterstitialEnded',\n  // Interstitial schedule resumed primary playback\n  INTERSTITIALS_PRIMARY_RESUMED = 'hlsInterstitialsPrimaryResumed',\n  // Interstitial players dispatch this event when playout limit is reached\n  PLAYOUT_LIMIT_REACHED = 'hlsPlayoutLimitReached',\n  // Event DateRange cue \"enter\" event dispatched\n  EVENT_CUE_ENTER = 'hlsEventCueEnter',\n}\n\n/**\n * Defines each Event type and payload by Event name. Used in {@link hls.js#HlsEventEmitter} to strongly type the event listener API.\n */\nexport interface HlsListeners {\n  [Events.MEDIA_ATTACHING]: (\n    event: Events.MEDIA_ATTACHING,\n    data: MediaAttachingData,\n  ) => void;\n  [Events.MEDIA_ATTACHED]: (\n    event: Events.MEDIA_ATTACHED,\n    data: MediaAttachedData,\n  ) => void;\n  [Events.MEDIA_DETACHING]: (\n    event: Events.MEDIA_DETACHING,\n    data: MediaDetachingData,\n  ) => void;\n  [Events.MEDIA_DETACHED]: (\n    event: Events.MEDIA_DETACHED,\n    data: MediaDetachedData,\n  ) => void;\n  [Events.MEDIA_ENDED]: (\n    event: Events.MEDIA_ENDED,\n    data: MediaEndedData,\n  ) => void;\n  [Events.STALL_RESOLVED]: (event: Events.STALL_RESOLVED, data: {}) => void;\n  [Events.BUFFER_RESET]: (event: Events.BUFFER_RESET) => void;\n  [Events.BUFFER_CODECS]: (\n    event: Events.BUFFER_CODECS,\n    data: BufferCodecsData,\n  ) => void;\n  [Events.BUFFER_CREATED]: (\n    event: Events.BUFFER_CREATED,\n    data: BufferCreatedData,\n  ) => void;\n  [Events.BUFFER_APPENDING]: (\n    event: Events.BUFFER_APPENDING,\n    data: BufferAppendingData,\n  ) => void;\n  [Events.BUFFER_APPENDED]: (\n    event: Events.BUFFER_APPENDED,\n    data: BufferAppendedData,\n  ) => void;\n  [Events.BUFFER_EOS]: (event: Events.BUFFER_EOS, data: BufferEOSData) => void;\n  [Events.BUFFERED_TO_END]: (event: Events.BUFFERED_TO_END) => void;\n  [Events.BUFFER_FLUSHING]: (\n    event: Events.BUFFER_FLUSHING,\n    data: BufferFlushingData,\n  ) => void;\n  [Events.BUFFER_FLUSHED]: (\n    event: Events.BUFFER_FLUSHED,\n    data: BufferFlushedData,\n  ) => void;\n  [Events.MANIFEST_LOADING]: (\n    event: Events.MANIFEST_LOADING,\n    data: ManifestLoadingData,\n  ) => void;\n  [Events.MANIFEST_LOADED]: (\n    event: Events.MANIFEST_LOADED,\n    data: ManifestLoadedData,\n  ) => void;\n  [Events.MANIFEST_PARSED]: (\n    event: Events.MANIFEST_PARSED,\n    data: ManifestParsedData,\n  ) => void;\n  [Events.LEVEL_SWITCHING]: (\n    event: Events.LEVEL_SWITCHING,\n    data: LevelSwitchingData,\n  ) => void;\n  [Events.LEVEL_SWITCHED]: (\n    event: Events.LEVEL_SWITCHED,\n    data: LevelSwitchedData,\n  ) => void;\n  [Events.LEVEL_LOADING]: (\n    event: Events.LEVEL_LOADING,\n    data: LevelLoadingData,\n  ) => void;\n  [Events.LEVEL_LOADED]: (\n    event: Events.LEVEL_LOADED,\n    data: LevelLoadedData,\n  ) => void;\n  [Events.LEVEL_UPDATED]: (\n    event: Events.LEVEL_UPDATED,\n    data: LevelUpdatedData,\n  ) => void;\n  [Events.LEVEL_PTS_UPDATED]: (\n    event: Events.LEVEL_PTS_UPDATED,\n    data: LevelPTSUpdatedData,\n  ) => void;\n  [Events.LEVELS_UPDATED]: (\n    event: Events.LEVELS_UPDATED,\n    data: LevelsUpdatedData,\n  ) => void;\n  [Events.AUDIO_TRACKS_UPDATED]: (\n    event: Events.AUDIO_TRACKS_UPDATED,\n    data: AudioTracksUpdatedData,\n  ) => void;\n  [Events.AUDIO_TRACK_SWITCHING]: (\n    event: Events.AUDIO_TRACK_SWITCHING,\n    data: AudioTrackSwitchingData,\n  ) => void;\n  [Events.AUDIO_TRACK_SWITCHED]: (\n    event: Events.AUDIO_TRACK_SWITCHED,\n    data: AudioTrackSwitchedData,\n  ) => void;\n  [Events.AUDIO_TRACK_LOADING]: (\n    event: Events.AUDIO_TRACK_LOADING,\n    data: TrackLoadingData,\n  ) => void;\n  [Events.AUDIO_TRACK_LOADED]: (\n    event: Events.AUDIO_TRACK_LOADED,\n    data: AudioTrackLoadedData,\n  ) => void;\n  [Events.AUDIO_TRACK_UPDATED]: (\n    event: Events.AUDIO_TRACK_UPDATED,\n    data: AudioTrackUpdatedData,\n  ) => void;\n  [Events.SUBTITLE_TRACKS_UPDATED]: (\n    event: Events.SUBTITLE_TRACKS_UPDATED,\n    data: SubtitleTracksUpdatedData,\n  ) => void;\n  [Events.SUBTITLE_TRACKS_CLEARED]: (\n    event: Events.SUBTITLE_TRACKS_CLEARED,\n  ) => void;\n  [Events.SUBTITLE_TRACK_SWITCH]: (\n    event: Events.SUBTITLE_TRACK_SWITCH,\n    data: SubtitleTrackSwitchData,\n  ) => void;\n  [Events.SUBTITLE_TRACK_LOADING]: (\n    event: Events.SUBTITLE_TRACK_LOADING,\n    data: TrackLoadingData,\n  ) => void;\n  [Events.SUBTITLE_TRACK_LOADED]: (\n    event: Events.SUBTITLE_TRACK_LOADED,\n    data: SubtitleTrackLoadedData,\n  ) => void;\n  [Events.SUBTITLE_TRACK_UPDATED]: (\n    event: Events.SUBTITLE_TRACK_UPDATED,\n    data: SubtitleTrackUpdatedData,\n  ) => void;\n  [Events.SUBTITLE_FRAG_PROCESSED]: (\n    event: Events.SUBTITLE_FRAG_PROCESSED,\n    data: SubtitleFragProcessedData,\n  ) => void;\n  [Events.CUES_PARSED]: (\n    event: Events.CUES_PARSED,\n    data: CuesParsedData,\n  ) => void;\n  [Events.NON_NATIVE_TEXT_TRACKS_FOUND]: (\n    event: Events.NON_NATIVE_TEXT_TRACKS_FOUND,\n    data: NonNativeTextTracksData,\n  ) => void;\n  [Events.INIT_PTS_FOUND]: (\n    event: Events.INIT_PTS_FOUND,\n    data: InitPTSFoundData,\n  ) => void;\n  [Events.FRAG_LOADING]: (\n    event: Events.FRAG_LOADING,\n    data: FragLoadingData,\n  ) => void;\n  // [Events.FRAG_LOAD_PROGRESS]: TodoEventType\n  [Events.FRAG_LOAD_EMERGENCY_ABORTED]: (\n    event: Events.FRAG_LOAD_EMERGENCY_ABORTED,\n    data: FragLoadEmergencyAbortedData,\n  ) => void;\n  [Events.FRAG_LOADED]: (\n    event: Events.FRAG_LOADED,\n    data: FragLoadedData,\n  ) => void;\n  [Events.FRAG_DECRYPTED]: (\n    event: Events.FRAG_DECRYPTED,\n    data: FragDecryptedData,\n  ) => void;\n  [Events.FRAG_PARSING_INIT_SEGMENT]: (\n    event: Events.FRAG_PARSING_INIT_SEGMENT,\n    data: FragParsingInitSegmentData,\n  ) => void;\n  [Events.FRAG_PARSING_USERDATA]: (\n    event: Events.FRAG_PARSING_USERDATA,\n    data: FragParsingUserdataData,\n  ) => void;\n  [Events.FRAG_PARSING_METADATA]: (\n    event: Events.FRAG_PARSING_METADATA,\n    data: FragParsingMetadataData,\n  ) => void;\n  // [Events.FRAG_PARSING_DATA]: TodoEventType\n  [Events.FRAG_PARSED]: (\n    event: Events.FRAG_PARSED,\n    data: FragParsedData,\n  ) => void;\n  [Events.FRAG_BUFFERED]: (\n    event: Events.FRAG_BUFFERED,\n    data: FragBufferedData,\n  ) => void;\n  [Events.FRAG_CHANGED]: (\n    event: Events.FRAG_CHANGED,\n    data: FragChangedData,\n  ) => void;\n  [Events.FPS_DROP]: (event: Events.FPS_DROP, data: FPSDropData) => void;\n  [Events.FPS_DROP_LEVEL_CAPPING]: (\n    event: Events.FPS_DROP_LEVEL_CAPPING,\n    data: FPSDropLevelCappingData,\n  ) => void;\n  [Events.MAX_AUTO_LEVEL_UPDATED]: (\n    event: Events.MAX_AUTO_LEVEL_UPDATED,\n    data: MaxAutoLevelUpdatedData,\n  ) => void;\n  [Events.ERROR]: (event: Events.ERROR, data: ErrorData) => void;\n  [Events.DESTROYING]: (event: Events.DESTROYING) => void;\n  [Events.KEY_LOADING]: (\n    event: Events.KEY_LOADING,\n    data: KeyLoadingData,\n  ) => void;\n  [Events.KEY_LOADED]: (event: Events.KEY_LOADED, data: KeyLoadedData) => void;\n  [Events.LIVE_BACK_BUFFER_REACHED]: (\n    event: Events.LIVE_BACK_BUFFER_REACHED,\n    data: LiveBackBufferData,\n  ) => void;\n  [Events.BACK_BUFFER_REACHED]: (\n    event: Events.BACK_BUFFER_REACHED,\n    data: BackBufferData,\n  ) => void;\n  [Events.STEERING_MANIFEST_LOADED]: (\n    event: Events.STEERING_MANIFEST_LOADED,\n    data: SteeringManifestLoadedData,\n  ) => void;\n  [Events.ASSET_LIST_LOADING]: (\n    event: Events.ASSET_LIST_LOADING,\n    data: AssetListLoadingData,\n  ) => void;\n  [Events.ASSET_LIST_LOADED]: (\n    event: Events.ASSET_LIST_LOADED,\n    data: AssetListLoadedData,\n  ) => void;\n  [Events.INTERSTITIALS_UPDATED]: (\n    event: Events.INTERSTITIALS_UPDATED,\n    data: InterstitialsUpdatedData,\n  ) => void;\n  [Events.INTERSTITIALS_BUFFERED_TO_BOUNDARY]: (\n    event: Events.INTERSTITIALS_BUFFERED_TO_BOUNDARY,\n    data: InterstitialsBufferedToBoundaryData,\n  ) => void;\n  [Events.INTERSTITIAL_ASSET_PLAYER_CREATED]: (\n    event: Events.INTERSTITIAL_ASSET_PLAYER_CREATED,\n    data: InterstitialAssetPlayerCreatedData,\n  ) => void;\n  [Events.INTERSTITIAL_STARTED]: (\n    event: Events.INTERSTITIAL_STARTED,\n    data: InterstitialStartedData,\n  ) => void;\n  [Events.INTERSTITIAL_ASSET_STARTED]: (\n    event: Events.INTERSTITIAL_ASSET_STARTED,\n    data: InterstitialAssetStartedData,\n  ) => void;\n  [Events.INTERSTITIAL_ASSET_ENDED]: (\n    event: Events.INTERSTITIAL_ASSET_ENDED,\n    data: InterstitialAssetEndedData,\n  ) => void;\n  [Events.INTERSTITIAL_ASSET_ERROR]: (\n    event: Events.INTERSTITIAL_ASSET_ERROR,\n    data: InterstitialAssetErrorData,\n  ) => void;\n  [Events.INTERSTITIAL_ENDED]: (\n    event: Events.INTERSTITIAL_ENDED,\n    data: InterstitialEndedData,\n  ) => void;\n  [Events.INTERSTITIALS_PRIMARY_RESUMED]: (\n    event: Events.INTERSTITIALS_PRIMARY_RESUMED,\n    data: InterstitialsPrimaryResumed,\n  ) => void;\n  [Events.PLAYOUT_LIMIT_REACHED]: (\n    event: Events.PLAYOUT_LIMIT_REACHED,\n    data: {},\n  ) => void;\n  [Events.EVENT_CUE_ENTER]: (event: Events.EVENT_CUE_ENTER, data: {}) => void;\n}\nexport interface HlsEventEmitter {\n  on<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener: HlsListeners[E],\n    context?: Context,\n  ): void;\n  once<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener: HlsListeners[E],\n    context?: Context,\n  ): void;\n\n  removeAllListeners<E extends keyof HlsListeners>(event?: E): void;\n  off<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener?: HlsListeners[E],\n    context?: Context,\n    once?: boolean,\n  ): void;\n\n  listeners<E extends keyof HlsListeners>(event: E): HlsListeners[E][];\n  emit<E extends keyof HlsListeners>(\n    event: E,\n    name: E,\n    eventObject: Parameters<HlsListeners[E]>[1],\n  ): boolean;\n  listenerCount<E extends keyof HlsListeners>(event: E): number;\n}\n","import type { LoaderConfig } from '../config';\nimport type { HlsUrlParameters, Level } from './level';\nimport type { MediaPlaylist } from './media-playlist';\nimport type { Fragment } from '../loader/fragment';\nimport type { Part } from '../loader/fragment';\nimport type { KeyLoaderInfo } from '../loader/key-loader';\nimport type { LevelDetails } from '../loader/level-details';\n\nexport interface LoaderContext {\n  // target URL\n  url: string;\n  // loader response type (arraybuffer or default response type for playlist)\n  responseType: string;\n  // headers\n  headers?: Record<string, string>;\n  // start byte range offset\n  rangeStart?: number;\n  // end byte range offset\n  rangeEnd?: number;\n  // true if onProgress should report partial chunk of loaded content\n  progressData?: boolean;\n}\n\nexport interface FragmentLoaderContext extends LoaderContext {\n  frag: Fragment;\n  part: Part | null;\n  resetIV?: boolean;\n}\n\nexport interface KeyLoaderContext extends LoaderContext {\n  keyInfo: KeyLoaderInfo;\n  frag: Fragment;\n}\n\nexport interface LoaderConfiguration {\n  // LoaderConfig policy that overrides required settings\n  loadPolicy: LoaderConfig;\n  /**\n   * @deprecated use LoaderConfig timeoutRetry and errorRetry maxNumRetry\n   */\n  // Max number of load retries\n  maxRetry: number;\n  /**\n   * @deprecated use LoaderConfig maxTimeToFirstByteMs and maxLoadTimeMs\n   */\n  // Timeout after which `onTimeOut` callback will be triggered\n  //  when loading has not finished after that delay\n  timeout: number;\n  /**\n   * @deprecated use LoaderConfig timeoutRetry and errorRetry retryDelayMs\n   */\n  // Delay between an I/O error and following connection retry (ms).\n  // This to avoid spamming the server\n  retryDelay: number;\n  /**\n   * @deprecated use LoaderConfig timeoutRetry and errorRetry maxRetryDelayMs\n   */\n  // max connection retry delay (ms)\n  maxRetryDelay: number;\n  // When streaming progressively, this is the minimum chunk size required to emit a PROGRESS event\n  highWaterMark?: number;\n}\n\nexport interface LoaderResponse {\n  url: string;\n  data?: string | ArrayBuffer | Object;\n  // Errors can include HTTP status code and error message\n  // Successful responses should include status code 200\n  code?: number;\n  text?: string;\n}\n\nexport interface LoaderStats {\n  aborted: boolean;\n  loaded: number;\n  retry: number;\n  total: number;\n  chunkCount: number;\n  bwEstimate: number;\n  loading: HlsProgressivePerformanceTiming;\n  parsing: HlsPerformanceTiming;\n  buffering: HlsProgressivePerformanceTiming;\n}\n\nexport interface HlsPerformanceTiming {\n  start: number;\n  end: number;\n}\n\nexport interface HlsChunkPerformanceTiming extends HlsPerformanceTiming {\n  executeStart: number;\n  executeEnd: number;\n}\n\nexport interface HlsProgressivePerformanceTiming extends HlsPerformanceTiming {\n  first: number;\n}\n\nexport type LoaderOnSuccess<T extends LoaderContext> = (\n  response: LoaderResponse,\n  stats: LoaderStats,\n  context: T,\n  networkDetails: any,\n) => void;\n\nexport type LoaderOnProgress<T extends LoaderContext> = (\n  stats: LoaderStats,\n  context: T,\n  data: string | ArrayBuffer,\n  networkDetails: any,\n) => void;\n\nexport type LoaderOnError<T extends LoaderContext> = (\n  error: {\n    // error status code\n    code: number;\n    // error description\n    text: string;\n  },\n  context: T,\n  networkDetails: any,\n  stats: LoaderStats,\n) => void;\n\nexport type LoaderOnTimeout<T extends LoaderContext> = (\n  stats: LoaderStats,\n  context: T,\n  networkDetails: any,\n) => void;\n\nexport type LoaderOnAbort<T extends LoaderContext> = (\n  stats: LoaderStats,\n  context: T,\n  networkDetails: any,\n) => void;\n\nexport interface LoaderCallbacks<T extends LoaderContext> {\n  onSuccess: LoaderOnSuccess<T>;\n  onError: LoaderOnError<T>;\n  onTimeout: LoaderOnTimeout<T>;\n  onAbort?: LoaderOnAbort<T>;\n  onProgress?: LoaderOnProgress<T>;\n}\n\nexport interface Loader<T extends LoaderContext> {\n  destroy(): void;\n  abort(): void;\n  load(\n    context: T,\n    config: LoaderConfiguration,\n    callbacks: LoaderCallbacks<T>,\n  ): void;\n  /**\n   * `getCacheAge()` is called by hls.js to get the duration that a given object\n   * has been sitting in a cache proxy when playing live.  If implemented,\n   * this should return a value in seconds.\n   *\n   * For HTTP based loaders, this should return the contents of the \"age\" header.\n   *\n   * @returns time object being lodaded\n   */\n  getCacheAge?: () => number | null;\n  getResponseHeader?: (name: string) => string | null;\n  context: T | null;\n  stats: LoaderStats;\n}\n\nexport const enum PlaylistContextType {\n  MANIFEST = 'manifest',\n  LEVEL = 'level',\n  AUDIO_TRACK = 'audioTrack',\n  SUBTITLE_TRACK = 'subtitleTrack',\n}\n\nexport const enum PlaylistLevelType {\n  MAIN = 'main',\n  AUDIO = 'audio',\n  SUBTITLE = 'subtitle',\n}\n\nexport interface PlaylistLoaderContext extends LoaderContext {\n  type: PlaylistContextType;\n  // the level index to load\n  level: number | null;\n  // level or track id from LevelLoadingData / TrackLoadingData\n  id: number | null;\n  // Media Playlist Group ID\n  groupId?: string;\n  // Content Steering Pathway ID (or undefined for default Pathway \".\")\n  pathwayId?: string;\n  // internal representation of a parsed m3u8 level playlist\n  levelDetails?: LevelDetails;\n  // Blocking playlist request delivery directives (or null id none were added to playlist url\n  deliveryDirectives: HlsUrlParameters | null;\n  // Reference to level or track object in hls.levels, hls.allAudioTracks, or hls.allSubtitleTracks (null when loading MVP)\n  levelOrTrack: Level | MediaPlaylist | null;\n}\n","/*\n * compute an Exponential Weighted moving average\n * - https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n *  - heavily inspired from shaka-player\n */\n\nclass EWMA {\n  public readonly halfLife: number;\n  private alpha_: number;\n  private estimate_: number;\n  private totalWeight_: number;\n\n  //  About half of the estimated value will be from the last |halfLife| samples by weight.\n  constructor(halfLife: number, estimate: number = 0, weight: number = 0) {\n    this.halfLife = halfLife;\n    // Larger values of alpha expire historical data more slowly.\n    this.alpha_ = halfLife ? Math.exp(Math.log(0.5) / halfLife) : 0;\n    this.estimate_ = estimate;\n    this.totalWeight_ = weight;\n  }\n\n  sample(weight: number, value: number) {\n    const adjAlpha = Math.pow(this.alpha_, weight);\n    this.estimate_ = value * (1 - adjAlpha) + adjAlpha * this.estimate_;\n    this.totalWeight_ += weight;\n  }\n\n  getTotalWeight(): number {\n    return this.totalWeight_;\n  }\n\n  getEstimate(): number {\n    if (this.alpha_) {\n      const zeroFactor = 1 - Math.pow(this.alpha_, this.totalWeight_);\n      if (zeroFactor) {\n        return this.estimate_ / zeroFactor;\n      }\n    }\n    return this.estimate_;\n  }\n}\n\nexport default EWMA;\n","/*\n * EWMA Bandwidth Estimator\n *  - heavily inspired from shaka-player\n * Tracks bandwidth samples and estimates available bandwidth.\n * Based on the minimum of two exponentially-weighted moving averages with\n * different half-lives.\n */\n\nimport EWMA from '../utils/ewma';\n\nclass EwmaBandWidthEstimator {\n  private defaultEstimate_: number;\n  private minWeight_: number;\n  private minDelayMs_: number;\n  private slow_: EWMA;\n  private fast_: EWMA;\n  private defaultTTFB_: number;\n  private ttfb_: EWMA;\n\n  constructor(\n    slow: number,\n    fast: number,\n    defaultEstimate: number,\n    defaultTTFB: number = 100,\n  ) {\n    this.defaultEstimate_ = defaultEstimate;\n    this.minWeight_ = 0.001;\n    this.minDelayMs_ = 50;\n    this.slow_ = new EWMA(slow);\n    this.fast_ = new EWMA(fast);\n    this.defaultTTFB_ = defaultTTFB;\n    this.ttfb_ = new EWMA(slow);\n  }\n\n  update(slow: number, fast: number) {\n    const { slow_, fast_, ttfb_ } = this;\n    if (slow_.halfLife !== slow) {\n      this.slow_ = new EWMA(slow, slow_.getEstimate(), slow_.getTotalWeight());\n    }\n    if (fast_.halfLife !== fast) {\n      this.fast_ = new EWMA(fast, fast_.getEstimate(), fast_.getTotalWeight());\n    }\n    if (ttfb_.halfLife !== slow) {\n      this.ttfb_ = new EWMA(slow, ttfb_.getEstimate(), ttfb_.getTotalWeight());\n    }\n  }\n\n  sample(durationMs: number, numBytes: number) {\n    durationMs = Math.max(durationMs, this.minDelayMs_);\n    const numBits = 8 * numBytes;\n    // weight is duration in seconds\n    const durationS = durationMs / 1000;\n    // value is bandwidth in bits/s\n    const bandwidthInBps = numBits / durationS;\n    this.fast_.sample(durationS, bandwidthInBps);\n    this.slow_.sample(durationS, bandwidthInBps);\n  }\n\n  sampleTTFB(ttfb: number) {\n    // weight is frequency curve applied to TTFB in seconds\n    // (longer times have less weight with expected input under 1 second)\n    const seconds = ttfb / 1000;\n    const weight = Math.sqrt(2) * Math.exp(-Math.pow(seconds, 2) / 2);\n    this.ttfb_.sample(weight, Math.max(ttfb, 5));\n  }\n\n  canEstimate(): boolean {\n    return this.fast_.getTotalWeight() >= this.minWeight_;\n  }\n\n  getEstimate(): number {\n    if (this.canEstimate()) {\n      // console.log('slow estimate:'+ Math.round(this.slow_.getEstimate()));\n      // console.log('fast estimate:'+ Math.round(this.fast_.getEstimate()));\n      // Take the minimum of these two estimates.  This should have the effect of\n      // adapting down quickly, but up more slowly.\n      return Math.min(this.fast_.getEstimate(), this.slow_.getEstimate());\n    } else {\n      return this.defaultEstimate_;\n    }\n  }\n\n  getEstimateTTFB(): number {\n    if (this.ttfb_.getTotalWeight() >= this.minWeight_) {\n      return this.ttfb_.getEstimate();\n    } else {\n      return this.defaultTTFB_;\n    }\n  }\n\n  get defaultEstimate(): number {\n    return this.defaultEstimate_;\n  }\n\n  destroy() {}\n}\nexport default EwmaBandWidthEstimator;\n","export interface ILogFunction {\n  (message?: any, ...optionalParams: any[]): void;\n}\n\nexport interface ILogger {\n  trace: ILogFunction;\n  debug: ILogFunction;\n  log: ILogFunction;\n  warn: ILogFunction;\n  info: ILogFunction;\n  error: ILogFunction;\n}\n\nexport class Logger implements ILogger {\n  trace: ILogFunction;\n  debug: ILogFunction;\n  log: ILogFunction;\n  warn: ILogFunction;\n  info: ILogFunction;\n  error: ILogFunction;\n\n  constructor(label: string, logger: ILogger) {\n    const lb = `[${label}]:`;\n    this.trace = noop;\n    this.debug = logger.debug.bind(null, lb);\n    this.log = logger.log.bind(null, lb);\n    this.warn = logger.warn.bind(null, lb);\n    this.info = logger.info.bind(null, lb);\n    this.error = logger.error.bind(null, lb);\n  }\n}\n\nconst noop: ILogFunction = function () {};\n\nconst fakeLogger: ILogger = {\n  trace: noop,\n  debug: noop,\n  log: noop,\n  warn: noop,\n  info: noop,\n  error: noop,\n};\n\nfunction createLogger() {\n  return Object.assign({}, fakeLogger);\n}\n\n// let lastCallTime;\n// function formatMsgWithTimeInfo(type, msg) {\n//   const now = Date.now();\n//   const diff = lastCallTime ? '+' + (now - lastCallTime) : '0';\n//   lastCallTime = now;\n//   msg = (new Date(now)).toISOString() + ' | [' +  type + '] > ' + msg + ' ( ' + diff + ' ms )';\n//   return msg;\n// }\n\nfunction consolePrintFn(type: string, id: string | undefined): ILogFunction {\n  const func: ILogFunction = self.console[type];\n  return func\n    ? func.bind(self.console, `${id ? '[' + id + '] ' : ''}[${type}] >`)\n    : noop;\n}\n\nfunction getLoggerFn(\n  key: string,\n  debugConfig: boolean | Partial<ILogger>,\n  id?: string,\n): ILogFunction {\n  return debugConfig[key]\n    ? debugConfig[key].bind(debugConfig)\n    : consolePrintFn(key, id);\n}\n\nconst exportedLogger: ILogger = createLogger();\n\nexport function enableLogs(\n  debugConfig: boolean | ILogger,\n  context: string,\n  id?: string | undefined,\n): ILogger {\n  // check that console is available\n  const newLogger = createLogger();\n  if (\n    (typeof console === 'object' && debugConfig === true) ||\n    typeof debugConfig === 'object'\n  ) {\n    const keys: (keyof ILogger)[] = [\n      // Remove out from list here to hard-disable a log-level\n      // 'trace',\n      'debug',\n      'log',\n      'info',\n      'warn',\n      'error',\n    ];\n    keys.forEach((key) => {\n      newLogger[key] = getLoggerFn(key, debugConfig, id);\n    });\n    // Some browsers don't allow to use bind on console object anyway\n    // fallback to default if needed\n    try {\n      newLogger.log(\n        `Debug logs enabled for \"${context}\" in hls.js version ${__VERSION__}`,\n      );\n    } catch (e) {\n      /* log fn threw an exception. All logger methods are no-ops. */\n      return createLogger();\n    }\n    // global exported logger uses the same functions as new logger without `id`\n    keys.forEach((key) => {\n      exportedLogger[key] = getLoggerFn(key, debugConfig);\n    });\n  } else {\n    // Reset global exported logger\n    Object.assign(exportedLogger, newLogger);\n  }\n  return newLogger;\n}\n\nexport const logger: ILogger = exportedLogger;\n","// This file is inserted as a shim for modules which we do not want to include into the distro.\n// This replacement is done in the \"alias\" plugin of the rollup config.\n// Use a ES dedicated file as Rollup assigns an object in the output\n// For example: \"var KeySystemFormats = emptyEs.KeySystemFormats;\"\nmodule.exports = {};\n","import type { BaseTrackSet } from '../types/buffer';\n\nexport function getMediaSource(\n  preferManagedMediaSource = true,\n): typeof MediaSource | undefined {\n  if (typeof self === 'undefined') return undefined;\n  const mms =\n    (preferManagedMediaSource || !self.MediaSource) &&\n    ((self as any).ManagedMediaSource as undefined | typeof MediaSource);\n  return (\n    mms ||\n    self.MediaSource ||\n    ((self as any).WebKitMediaSource as typeof MediaSource)\n  );\n}\n\nexport function isManagedMediaSource(source: typeof MediaSource | undefined) {\n  return (\n    typeof self !== 'undefined' && source === (self as any).ManagedMediaSource\n  );\n}\n\nexport function isCompatibleTrackChange(\n  currentTracks: BaseTrackSet,\n  requiredTracks: BaseTrackSet,\n): boolean {\n  const trackNames = Object.keys(currentTracks);\n  const requiredTrackNames = Object.keys(requiredTracks);\n  const trackCount = trackNames.length;\n  const requiredTrackCount = requiredTrackNames.length;\n  return (\n    !trackCount ||\n    !requiredTrackCount ||\n    (trackCount === requiredTrackCount &&\n      !trackNames.some((name) => requiredTrackNames.indexOf(name) === -1))\n  );\n}\n","// http://stackoverflow.com/questions/8936984/uint8array-to-string-in-javascript/22373197\n// http://www.onicos.com/staff/iz/a