/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @externs
*/
/**
* @typedef {{
* timestamp: number,
* id: number,
* type: string,
* fromAdaptation: boolean,
* bandwidth: ?number
* }}
*
* @property {number} timestamp
* The timestamp the choice was made, in seconds since 1970
* (i.e. <code>Date.now() / 1000</code>).
* @property {number} id
* The id of the track that was chosen.
* @property {string} type
* The type of track chosen (<code>'variant'</code> or <code>'text'</code>).
* @property {boolean} fromAdaptation
* <code>true</code> if the choice was made by AbrManager for adaptation;
* <code>false</code> if it was made by the application through
* <code>selectTrack</code>.
* @property {?number} bandwidth
* The bandwidth of the chosen track (<code>null</code> for text).
* @exportDoc
*/
shaka.extern.TrackChoice;
/**
* @typedef {{
* timestamp: number,
* state: string,
* duration: number
* }}
*
* @property {number} timestamp
* The timestamp the state was entered, in seconds since 1970
* (i.e. <code>Date.now() / 1000</code>).
* @property {string} state
* The state the player entered. This could be <code>'buffering'</code>,
* <code>'playing'</code>, <code>'paused'</code>, or <code>'ended'</code>.
* @property {number} duration
* The number of seconds the player was in this state. If this is the last
* entry in the list, the player is still in this state, so the duration will
* continue to increase.
* @exportDoc
*/
shaka.extern.StateChange;
/**
* @typedef {{
* width: number,
* height: number,
* streamBandwidth: number,
*
* decodedFrames: number,
* droppedFrames: number,
* corruptedFrames: number,
* estimatedBandwidth: number,
*
* completionPercent: number,
* loadLatency: number,
* manifestTimeSeconds: number,
* drmTimeSeconds: number,
* playTime: number,
* pauseTime: number,
* bufferingTime: number,
* licenseTime: number,
* liveLatency: number,
*
* maxSegmentDuration: number,
*
* gapsJumped: number,
* stallsDetected: number,
*
* manifestSizeBytes: number,
* bytesDownloaded: number,
*
* nonFatalErrorCount: number,
* manifestPeriodCount: number,
* manifestGapCount: number,
*
* switchHistory: !Array.<shaka.extern.TrackChoice>,
* stateHistory: !Array.<shaka.extern.StateChange>
* }}
*
* @description
* Contains statistics and information about the current state of the player.
* This is meant for applications that want to log quality-of-experience (QoE)
* or other stats. These values will reset when <code>load()</code> is called
* again.
*
* @property {number} width
* The width of the current video track. If nothing is loaded or the content
* is audio-only, NaN.
* @property {number} height
* The height of the current video track. If nothing is loaded or the content
* is audio-only, NaN.
* @property {number} streamBandwidth
* The bandwidth required for the current streams (total, in bit/sec).
* It takes into account the playbackrate. If nothing is loaded, NaN.
*
* @property {number} decodedFrames
* The total number of frames decoded by the Player. If not reported by the
* browser, NaN.
* @property {number} droppedFrames
* The total number of frames dropped by the Player. If not reported by the
* browser, NaN.
* @property {number} corruptedFrames
* The total number of corrupted frames dropped by the browser. If not
* reported by the browser, NaN.
* @property {number} estimatedBandwidth
* The current estimated network bandwidth (in bit/sec). If no estimate
* available, NaN.
*
* @property {number} gapsJumped
* The total number of playback gaps jumped by the GapJumpingController.
* If nothing is loaded, NaN.
* @property {number} stallsDetected
* The total number of playback stalls detected by the StallDetector.
* If nothing is loaded, NaN.
*
* @property {number} completionPercent
* This is the greatest completion percent that the user has experienced in
* playback. Also known as the "high water mark". If nothing is loaded, or
* the stream is live (and therefore indefinite), NaN.
* @property {number} loadLatency
* This is the number of seconds it took for the video element to have enough
* data to begin playback. This is measured from the time load() is called to
* the time the <code>'loadeddata'</code> event is fired by the media element.
* If nothing is loaded, NaN.
* @property {number} manifestTimeSeconds
* The amount of time it took to download and parse the manifest.
* If nothing is loaded, NaN.
* @property {number} drmTimeSeconds
* The amount of time it took to download the first drm key, and load that key
* into the drm system. If nothing is loaded or DRM is not in use, NaN.
* @property {number} playTime
* The total time spent in a playing state in seconds. If nothing is loaded,
* NaN.
* @property {number} pauseTime
* The total time spent in a paused state in seconds. If nothing is loaded,
* NaN.
* @property {number} bufferingTime
* The total time spent in a buffering state in seconds. If nothing is
* loaded, NaN.
* @property {number} licenseTime
* The time spent on license requests during this session in seconds. If DRM
* is not in use, NaN.
* @property {number} liveLatency
* The time between the capturing of a frame and the end user having it
* displayed on their screen. If nothing is loaded or the content is VOD,
* NaN.
*
* @property {number} maxSegmentDuration
* The presentation's max segment duration in seconds. If nothing is loaded,
* NaN.
*
* @property {number} manifestSizeBytes
* Size of the manifest payload. For DASH & MSS it will match the latest
* downloaded manifest. For HLS, it will match the lastly downloaded playlist.
* If nothing is loaded or in src= mode, NaN.
* @property {number} bytesDownloaded
* The bytes downloaded during the playback. If nothing is loaded, NaN.
*
* @property {number} nonFatalErrorCount
* The amount of non fatal errors that occurred. If nothing is loaded, NaN.
* @property {number} manifestPeriodCount
* The amount of periods occurred in the manifest. For DASH it represents
* number of Period elements in a manifest. For HLS & MSS it is always 1.
* In src= mode or if nothing is loaded, NaN.
* @property {number} manifestGapCount
* The amount of gaps found in a manifest. For DASH, it represents number of
* discontinuities found between periods. For HLS, it is a number of EXT-X-GAP
* and GAP=YES occurrences. For MSS, it is always set to 0.
* If in src= mode or nothing is loaded, NaN.
*
* @property {!Array.<shaka.extern.TrackChoice>} switchHistory
* A history of the stream changes.
* @property {!Array.<shaka.extern.StateChange>} stateHistory
* A history of the state changes.
* @exportDoc
*/
shaka.extern.Stats;
/**
* @typedef {{
* start: number,
* end: number
* }}
*
* @description
* Contains the times of a range of buffered content.
*
* @property {number} start
* The start time of the range, in seconds.
* @property {number} end
* The end time of the range, in seconds.
* @exportDoc
*/
shaka.extern.BufferedRange;
/**
* @typedef {{
* total: !Array.<shaka.extern.BufferedRange>,
* audio: !Array.<shaka.extern.BufferedRange>,
* video: !Array.<shaka.extern.BufferedRange>,
* text: !Array.<shaka.extern.BufferedRange>
* }}
*
* @description
* Contains information about the current buffered ranges.
*
* @property {!Array.<shaka.extern.BufferedRange>} total
* The combined audio/video buffered ranges, reported by
* <code>video.buffered</code>.
* @property {!Array.<shaka.extern.BufferedRange>} audio
* The buffered ranges for audio content.
* @property {!Array.<shaka.extern.BufferedRange>} video
* The buffered ranges for video content.
* @property {!Array.<shaka.extern.BufferedRange>} text
* The buffered ranges for text content.
* @exportDoc
*/
shaka.extern.BufferedInfo;
/**
* @typedef {{
* id: number,
* active: boolean,
*
* type: string,
* bandwidth: number,
*
* language: string,
* label: ?string,
* kind: ?string,
* width: ?number,
* height: ?number,
* frameRate: ?number,
* pixelAspectRatio: ?string,
* hdr: ?string,
* colorGamut: ?string,
* videoLayout: ?string,
* mimeType: ?string,
* audioMimeType: ?string,
* videoMimeType: ?string,
* codecs: ?string,
* audioCodec: ?string,
* videoCodec: ?string,
* primary: boolean,
* roles: !Array.<string>,
* audioRoles: Array.<string>,
* accessibilityPurpose: ?shaka.media.ManifestParser.AccessibilityPurpose,
* forced: boolean,
* videoId: ?number,
* audioId: ?number,
* channelsCount: ?number,
* audioSamplingRate: ?number,
* tilesLayout: ?string,
* audioBandwidth: ?number,
* videoBandwidth: ?number,
* spatialAudio: boolean,
* originalVideoId: ?string,
* originalAudioId: ?string,
* originalTextId: ?string,
* originalImageId: ?string,
* originalLanguage: ?string
* }}
*
* @description
* An object describing a media track. This object should be treated as
* read-only as changing any values does not have any effect. This is the
* public view of an audio/video paring (variant type) or text track (text
* type) or image track (image type).
*
* @property {number} id
* The unique ID of the track.
* @property {boolean} active
* If true, this is the track being streamed (another track may be
* visible/audible in the buffer).
*
* @property {string} type
* The type of track, either <code>'variant'</code> or <code>'text'</code>
* or <code>'image'</code>.
* @property {number} bandwidth
* The bandwidth required to play the track, in bits/sec.
*
* @property {string} language
* The language of the track, or <code>'und'</code> if not given. This value
* is normalized as follows - language part is always lowercase and translated
* to ISO-639-1 when possible, locale part is always uppercase,
* i.e. <code>'en-US'</code>.
* @property {?string} label
* The track label, which is unique text that should describe the track.
* @property {?string} kind
* (only for text tracks) The kind of text track, either
* <code>'caption'</code> or <code>'subtitle'</code>.
* @property {?number} width
* The video width provided in the manifest, if present.
* @property {?number} height
* The video height provided in the manifest, if present.
* @property {?number} frameRate
* The video framerate provided in the manifest, if present.
* @property {?string} pixelAspectRatio
* The video pixel aspect ratio provided in the manifest, if present.
* @property {?string} hdr
* The video HDR provided in the manifest, if present.
* @property {?string} colorGamut
* The video color gamut provided in the manifest, if present.
* @property {?string} videoLayout
* The video layout provided in the manifest, if present.
* @property {?string} mimeType
* The MIME type of the content provided in the manifest.
* @property {?string} audioMimeType
* The audio MIME type of the content provided in the manifest.
* @property {?string} videoMimeType
* The video MIME type of the content provided in the manifest.
* @property {?string} codecs
* The audio/video codecs string provided in the manifest, if present.
* @property {?string} audioCodec
* The audio codecs string provided in the manifest, if present.
* @property {?string} videoCodec
* The video codecs string provided in the manifest, if present.
* @property {boolean} primary
* True indicates that this in the primary language for the content.
* This flag is based on signals from the manifest.
* This can be a useful hint about which language should be the default, and
* indicates which track Shaka will use when the user's language preference
* cannot be satisfied.
* @property {!Array.<string>} roles
* The roles of the track, e.g. <code>'main'</code>, <code>'caption'</code>,
* or <code>'commentary'</code>.
* @property {Array.<string>} audioRoles
* The roles of the audio in the track, e.g. <code>'main'</code> or
* <code>'commentary'</code>. Will be null for text tracks or variant tracks
* without audio.
* @property {?shaka.media.ManifestParser.AccessibilityPurpose}
* accessibilityPurpose
* The DASH accessibility descriptor, if one was provided for this track.
* For text tracks, this describes the text; otherwise, this is for the audio.
* @property {boolean} forced
* True indicates that this in the forced text language for the content.
* This flag is based on signals from the manifest.
* @property {?number} videoId
* (only for variant tracks) The video stream id.
* @property {?number} audioId
* (only for variant tracks) The audio stream id.
* @property {?number} channelsCount
* The count of the audio track channels.
* @property {?number} audioSamplingRate
* Specifies the maximum sampling rate of the content.
* @property {?string} tilesLayout
* The value is a grid-item-dimension consisting of two positive decimal
* integers in the format: column-x-row ('4x3'). It describes the arrangement
* of Images in a Grid. The minimum valid LAYOUT is '1x1'.
* @property {boolean} spatialAudio
* True indicates that the content has spatial audio.
* This flag is based on signals from the manifest.
* @property {?number} audioBandwidth
* (only for variant tracks) The audio stream's bandwidth if known.
* @property {?number} videoBandwidth
* (only for variant tracks) The video stream's bandwidth if known.
* @property {?string} originalVideoId
* (variant tracks only) The original ID of the video part of the track, if
* any, as it appeared in the original manifest.
* @property {?string} originalAudioId
* (variant tracks only) The original ID of the audio part of the track, if
* any, as it appeared in the original manifest.
* @property {?string} originalTextId
* (text tracks only) The original ID of the text track, if any, as it
* appeared in the original manifest.
* @property {?string} originalImageId
* (image tracks only) The original ID of the image track, if any, as it
* appeared in the original manifest.
* @property {?string} originalLanguage
* The original language of the track, if any, as it appeared in the original
* manifest. This is the exact value provided in the manifest; for normalized
* value use <code>language</code> property.
* @exportDoc
*/
shaka.extern.Track;
/**
* @typedef {!Array.<!shaka.extern.Track>}
*/
shaka.extern.TrackList;
/**
* @typedef {{
* minWidth: number,
* maxWidth: number,
* minHeight: number,
* maxHeight: number,
* minPixels: number,
* maxPixels: number,
*
* minFrameRate: number,
* maxFrameRate: number,
*
* minBandwidth: number,
* maxBandwidth: number,
*
* minChannelsCount: number,
* maxChannelsCount: number
* }}
*
* @description
* An object describing application restrictions on what tracks can play. All
* restrictions must be fulfilled for a track to be playable/selectable.
* The restrictions system behaves somewhat differently at the ABR level and the
* player level, so please refer to the documentation for those specific
* settings.
*
* @see shaka.extern.PlayerConfiguration
* @see shaka.extern.AbrConfiguration
*
* @property {number} minWidth
* The minimum width of a video track, in pixels.
* @property {number} maxWidth
* The maximum width of a video track, in pixels.
* @property {number} minHeight
* The minimum height of a video track, in pixels.
* @property {number} maxHeight
* The maximum height of a video track, in pixels.
* @property {number} minPixels
* The minimum number of total pixels in a video track (i.e.
* <code>width * height</code>).
* @property {number} maxPixels
* The maximum number of total pixels in a video track (i.e.
* <code>width * height</code>).
*
* @property {number} minFrameRate
* The minimum framerate of a variant track.
* @property {number} maxFrameRate
* The maximum framerate of a variant track.
*
* @property {number} minBandwidth
* The minimum bandwidth of a variant track, in bit/sec.
* @property {number} maxBandwidth
* The maximum bandwidth of a variant track, in bit/sec.
*
* @property {number} minChannelsCount
* The minimum channels count of a variant track.
* @property {number} maxChannelsCount
* The maximum channels count of a variant track.
* @exportDoc
*/
shaka.extern.Restrictions;
/**
* @typedef {{
* persistentState: boolean,
* encryptionSchemes: !Array<string|null>,
* videoRobustnessLevels: !Array<string>,
* audioRobustnessLevels: !Array<string>
* }}
*
* @property {boolean} persistentState
* Whether this key system supports persistent state.
* @property {!Array<string|null>} encryptionSchemes
* An array of encryption schemes that are reported to work, through either
* EME or MCap APIs. An empty array indicates that encryptionScheme queries
* are not supported. This should not happen if our polyfills are installed.
* @property {!Array<string>} videoRobustnessLevels
* An array of video robustness levels that are reported to work. An empty
* array indicates that none were tested. Not all key systems have a list of
* known robustness levels built into probeSupport().
* @property {!Array<string>} audioRobustnessLevels
* An array of audio robustness levels that are reported to work. An empty
* array indicates that none were tested. Not all key systems have a list of
* known robustness levels built into probeSupport().
* @exportDoc
*/
shaka.extern.DrmSupportType;
/**
* @typedef {{
* manifest: !Object.<string, boolean>,
* media: !Object.<string, boolean>,
* drm: !Object.<string, ?shaka.extern.DrmSupportType>,
* hardwareResolution: shaka.extern.Resolution
* }}
*
* @description
* An object detailing browser support for various features.
*
* @property {!Object.<string, boolean>} manifest
* A map of supported manifest types.
* The keys are manifest MIME types and file extensions.
* @property {!Object.<string, boolean>} media
* A map of supported media types.
* The keys are media MIME types.
* @property {!Object.<string, ?shaka.extern.DrmSupportType>} drm
* A map of supported key systems.
* The keys are the key system names. The value is <code>null</code> if it is
* not supported. Key systems not probed will not be in this dictionary.
* @property {shaka.extern.Resolution} hardwareResolution
* The maximum detected hardware resolution, which may have
* height==width==Infinity for devices without a maximum resolution or
* without a way to detect the maximum.
*
* @exportDoc
*/
shaka.extern.SupportType;
/**
* @typedef {{
* cueTime: ?number,
* data: !Uint8Array,
* frames: !Array.<shaka.extern.MetadataFrame>,
* dts: ?number,
* pts: ?number
* }}
*
* @description
* ID3 metadata in format defined by
* https://id3.org/id3v2.3.0#Declared_ID3v2_frames
* The content of the field.
*
* @property {?number} cueTime
* @property {!Uint8Array} data
* @property {!Array.<shaka.extern.MetadataFrame>} frames
* @property {?number} dts
* @property {?number} pts
*
* @exportDoc
*/
shaka.extern.ID3Metadata;
/**
* @typedef {{
* type: string,
* size: number,
* data: Uint8Array
* }}
*
* @description metadata raw frame.
* @property {string} type
* @property {number} size
* @property {Uint8Array} data
* @exportDoc
*/
shaka.extern.MetadataRawFrame;
/**
* @typedef {{
* key: string,
* data: (ArrayBuffer|string|number),
* description: string,
* mimeType: ?string,
* pictureType: ?number
* }}
*
* @description metadata frame parsed.
* @property {string} key
* @property {ArrayBuffer|string|number} data
* @property {string} description
* @property {?string} mimeType
* @property {?number} pictureType
* @exportDoc
*/
shaka.extern.MetadataFrame;
/**
* @typedef {{
* startTime: number,
* endTime: ?number,
* values: !Array.<shaka.extern.MetadataFrame>
* }}
*
* @property {number} startTime
* @property {?number} endTime
* @property {!Array.<shaka.extern.MetadataFrame>} values
* @exportDoc
*/
shaka.extern.Interstitial;
/**
* @typedef {{
* schemeIdUri: string,
* value: string,
* startTime: number,
* endTime: number,
* id: string,
* eventElement: Element,
* eventNode: ?shaka.extern.xml.Node
* }}
*
* @description
* Contains information about a region of the timeline that will cause an event
* to be raised when the playhead enters or exits it. In DASH this is the
* EventStream element.
*
* @property {string} schemeIdUri
* Identifies the message scheme.
* @property {string} value
* Specifies the value for the region.
* @property {number} startTime
* The presentation time (in seconds) that the region should start.
* @property {number} endTime
* The presentation time (in seconds) that the region should end.
* @property {string} id
* Specifies an identifier for this instance of the region.
* @property {Element} eventElement
* <b>DEPRECATED</b>: Use eventNode instead.
* The XML element that defines the Event.
* @property {?shaka.extern.xml.Node} eventNode
* The XML element that defines the Event.
* @exportDoc
*/
shaka.extern.TimelineRegionInfo;
/**
* @typedef {{
* audioSamplingRate: ?number,
* bandwidth: number,
* codecs: string,
* contentType: string,
* frameRate: ?number,
* height: ?number,
* mimeType: ?string,
* label: ?string,
* roles: ?Array.<string>,
* language: ?string,
* channelsCount: ?number,
* pixelAspectRatio: ?string,
* width: ?number
* }}
*
* @description
* Contains information about the quality of an audio or video media stream.
*
* @property {?number} audioSamplingRate
* Specifies the maximum sampling rate of the content.
* @property {number} bandwidth
* The bandwidth in bits per second.
* @property {string} codecs
* The Stream's codecs, e.g., 'avc1.4d4015' or 'vp9', which must be
* compatible with the Stream's MIME type.
* @property {string} contentType
* The type of content, which may be "video" or "audio".
* @property {?number} frameRate
* The video frame rate.
* @property {?number} height
* The video height in pixels.
* @property {string} mimeType
* The MIME type.
* @property {?string} label
* The stream's label, when available.
* @property {?Array.<string>} roles
* The stream's role, when available.
* @property {?string} language
* The stream's language, when available.
* @property {?number} channelsCount
* The number of audio channels, or null if unknown.
* @property {?string} pixelAspectRatio
* The pixel aspect ratio value; e.g. "1:1".
* @property {?number} width
* The video width in pixels.
* @exportDoc
*/
shaka.extern.MediaQualityInfo;
/**
* @typedef {{
* schemeIdUri: string,
* value: string,
* startTime: number,
* endTime: number,
* timescale: number,
* presentationTimeDelta: number,
* eventDuration: number,
* id: number,
* messageData: Uint8Array
* }}
*
* @description
* Contains information about an EMSG MP4 box.
*
* @property {string} schemeIdUri
* Identifies the message scheme.
* @property {string} value
* Specifies the value for the event.
* @property {number} startTime
* The time that the event starts (in presentation time).
* @property {number} endTime
* The time that the event ends (in presentation time).
* @property {number} timescale
* Provides the timescale, in ticks per second.
* @property {number} presentationTimeDelta
* The offset that the event starts, relative to the start of the segment
* this is contained in (in units of timescale).
* @property {number} eventDuration
* The duration of the event (in units of timescale).
* @property {number} id
* A field identifying this instance of the message.
* @property {Uint8Array} messageData
* Body of the message.
* @exportDoc
*/
shaka.extern.EmsgInfo;
/**
* @typedef {{
* wallClockTime: number,
* programStartDate: Date
* }}
*
* @description
* Contains information about an PRFT MP4 box.
*
* @property {number} wallClockTime
* A UTC timestamp corresponding to decoding time in milliseconds.
* @property {Date} programStartDate
* The derived start date of the program.
* @exportDoc
*/
shaka.extern.ProducerReferenceTime;
/**
* @typedef {{
* distinctiveIdentifierRequired: boolean,
* persistentStateRequired: boolean,
* videoRobustness: string,
* audioRobustness: string,
* serverCertificate: Uint8Array,
* serverCertificateUri: string,
* individualizationServer: string,
* sessionType: string,
* headers: !Object.<string, string>
* }}
*
* @property {boolean} distinctiveIdentifierRequired
* <i>Defaults to false.</i> <br>
* True if the application requires the key system to support distinctive
* identifiers.
* @property {boolean} persistentStateRequired
* <i>Defaults to false.</i> <br>
* True if the application requires the key system to support persistent
* state, e.g., for persistent license storage.
* @property {string} videoRobustness
* A key-system-specific string that specifies a required security level for
* video.
* <i>Defaults to <code>''</code>, i.e., no specific robustness required.</i>
* @property {string} audioRobustness
* A key-system-specific string that specifies a required security level for
* audio.
* <i>Defaults to <code>''</code>, i.e., no specific robustness required.</i>
* @property {Uint8Array} serverCertificate
* <i>Defaults to null.</i> <br>
* <i>An empty certificate (<code>byteLength==0</code>) will be treated as
* <code>null</code>.</i> <br>
* <i>A certificate will be requested from the license server if
* required.</i> <br>
* A key-system-specific server certificate used to encrypt license requests.
* Its use is optional and is meant as an optimization to avoid a round-trip
* to request a certificate.
* @property {string} serverCertificateUri
* <i>Defaults to <code>''</code>.</i><br>
* If given, will make a request to the given URI to get the server
* certificate. This is ignored if <code>serverCertificate</code> is set.
* @property {string} individualizationServer
* The server that handles an <code>'individualiation-request'</code>. If the
* server isn't given, it will default to the license server.
* @property {string} sessionType
* <i>Defaults to <code>'temporary'</code> for streaming.</i> <br>
* The MediaKey session type to create streaming licenses with. This doesn't
* affect offline storage.
* @property {!Object.<string, string>} headers
* The headers to use in the license request.
*
* @exportDoc
*/
shaka.extern.AdvancedDrmConfiguration;
/**
* @typedef {{
* sessionId: string,
* sessionType: string,
* initData: ?Uint8Array,
* initDataType: ?string
* }}
*
* @description
* DRM Session Metadata for an active session
*
* @property {string} sessionId
* Session id
* @property {string} sessionType
* Session type
* @property {?Uint8Array} initData
* Initialization data in the format indicated by initDataType.
* @property {string} initDataType
* A string to indicate what format initData is in.
* @exportDoc
*/
shaka.extern.DrmSessionMetadata;
/**
* @typedef {{
* sessionId: string,
* initData: ?Uint8Array,
* initDataType: ?string
* }}
*
* @description
* DRM Session Metadata for saved persistent session
*
* @property {string} sessionId
* Session id
* @property {?Uint8Array} initData
* Initialization data in the format indicated by initDataType.
* @property {?string} initDataType
* A string to indicate what format initData is in.
* @exportDoc
*/
shaka.extern.PersistentSessionMetadata;
/**
* @typedef {{
* retryParameters: shaka.extern.RetryParameters,
* servers: !Object.<string, string>,
* clearKeys: !Object.<string, string>,
* delayLicenseRequestUntilPlayed: boolean,
* persistentSessionOnlinePlayback: boolean,
* persistentSessionsMetadata:
* !Array.<shaka.extern.PersistentSessionMetadata>,
* advanced: Object.<string, shaka.extern.AdvancedDrmConfiguration>,
* initDataTransform:(shaka.extern.InitDataTransform|undefined),
* logLicenseExchange: boolean,
* updateExpirationTime: number,
* preferredKeySystems: !Array.<string>,
* keySystemsMapping: !Object.<string, string>,
* parseInbandPsshEnabled: boolean,
* minHdcpVersion: string,
* ignoreDuplicateInitData: boolean
* }}
*
* @property {shaka.extern.RetryParameters} retryParameters
* Retry parameters for license requests.
* @property {!Object.<string, string>} servers
* <i>Required for all but the clear key CDM.</i> <br>
* A dictionary which maps key system IDs to their license servers.
* For example,
* <code>{'com.widevine.alpha': 'https://example.com/drm'}</code>.
* @property {!Object.<string, string>} clearKeys
* <i>Forces the use of the Clear Key CDM.</i>
* A map of key IDs (hex or base64) to keys (hex or base64).
* @property {boolean} delayLicenseRequestUntilPlayed
* <i>Defaults to false.</i> <br>
* True to configure drm to delay sending a license request until a user
* actually starts playing content.
* @property {boolean} persistentSessionOnlinePlayback
* <i>Defaults to false.</i> <br>
* True to configure drm to try playback with given persistent session ids
* before requesting a license. Also prevents the session removal at playback
* stop, as-to be able to re-use it later.
* @property {!Array.<PersistentSessionMetadata>} persistentSessionsMetadata
* Persistent sessions metadata to load before starting playback
* @property {Object.<string, shaka.extern.AdvancedDrmConfiguration>} advanced
* <i>Optional.</i> <br>
* A dictionary which maps key system IDs to advanced DRM configuration for
* those key systems.
* @property {shaka.extern.InitDataTransform|undefined} initDataTransform
* <i>Optional.</i><br>
* If given, this function is called with the init data from the
* manifest/media and should return the (possibly transformed) init data to
* pass to the browser.
* @property {boolean} logLicenseExchange
* <i>Optional.</i><br>
* If set to <code>true</code>, prints logs containing the license exchange.
* This includes the init data, request, and response data, printed as base64
* strings. Don't use in production, for debugging only; has no affect in
* release builds as logging is removed.
* @property {number} updateExpirationTime
* <i>Defaults to 1.</i> <br>
* The frequency in seconds with which to check the expiration of a session.
* @property {!Array.<string>} preferredKeySystems
* <i>Defaults ['com.microsoft.playready'] on Xbox One and PlayStation 4, and
* an empty array for all other browsers.</i> <br>
* Specifies the priorties of available DRM key systems.
* @property {Object.<string, string>} keySystemsMapping
* A map of key system name to key system name.
* @property {boolean} parseInbandPsshEnabled
* <i>Defaults to true on Xbox One, and false for all other browsers.</i><br>
* When true parse DRM init data from pssh boxes in media and init segments
* and ignore 'encrypted' events.
* This is required when using in-band key rotation on Xbox One.
* @property {string} minHdcpVersion
* <i>By default (''), do not check the HDCP version.</i><br>
* Indicates the minimum version of HDCP to start the playback of encrypted
* streams. <b>May be ignored if not supported by the device.</b>
* @property {boolean} ignoreDuplicateInitData
* <i>Defaults to false on Tizen 2, and true for all other browsers.</i><br>
* When true indicate that the player doesn't ignore duplicate init data.
* Note: Tizen 2015 and 2016 models will send multiple webkitneedkey events
* with the same init data. If the duplicates are supressed, playback
* will stall without errors.
* @exportDoc
*/
shaka.extern.DrmConfiguration;
/**
* @typedef {function(!Uint8Array, string, ?shaka.extern.DrmInfo):!Uint8Array}
*
* @description
* A callback function to handle custom content ID signaling for FairPlay
* content.
*
* @exportDoc
*/
shaka.extern.InitDataTransform;
/**
* @typedef {{
* tagName: !string,
* attributes: !Object<string, string>,
* children: !Array.<shaka.extern.xml.Node | string>,
* parent: ?shaka.extern.xml.Node
* }}
*
* @description
* Data structure for xml nodes as simple objects
*
* @property {!string} tagName
* The name of the element
* @property {!object} attributes
* The attributes of the element
* @property {!Array.<shaka.extern.xml.Node | string>} children
* The child nodes or string body of the element
* @property {?shaka.extern.xml.Node} parent
* The parent of the current element
*
* @exportDoc
*/
shaka.extern.xml.Node;
/**
* @typedef {{
* clockSyncUri: string,
* ignoreDrmInfo: boolean,
* disableXlinkProcessing: boolean,
* xlinkFailGracefully: boolean,
* ignoreMinBufferTime: boolean,
* autoCorrectDrift: boolean,
* initialSegmentLimit: number,
* ignoreSuggestedPresentationDelay: boolean,
* ignoreEmptyAdaptationSet: boolean,
* ignoreMaxSegmentDuration: boolean,
* keySystemsByURI: !Object.<string, string>,
* manifestPreprocessor: function(!Element),
* manifestPreprocessorTXml: function(!shaka.extern.xml.Node),
* sequenceMode: boolean,
* enableAudioGroups: boolean,
* multiTypeVariantsAllowed: boolean,
* useStreamOnceInPeriodFlattening: boolean,
* updatePeriod: number,
* enableFastSwitching: boolean
* }}
*
* @property {string} clockSyncUri
* A default clock sync URI to be used with live streams which do not
* contain any clock sync information. The <code>Date</code> header from this
* URI will be used to determine the current time.
* @property {boolean} ignoreDrmInfo
* If true will cause DASH parser to ignore DRM information specified
* by the manifest and treat it as if it signaled no particular key
* system and contained no init data. Defaults to false if not provided.
* @property {boolean} disableXlinkProcessing
* If true, xlink-related processing will be disabled. Defaults to
* <code>false</code> if not provided.
* @property {boolean} xlinkFailGracefully
* If true, xlink-related errors will result in a fallback to the tag's
* existing contents. If false, xlink-related errors will be propagated
* to the application and will result in a playback failure. Defaults to
* false if not provided.
* @property {boolean} ignoreMinBufferTime
* If true will cause DASH parser to ignore <code>minBufferTime</code> from
* manifest. It allows player config to take precedence over manifest for
* <code>rebufferingGoal</code>. Defaults to <code>false</code> if not
* provided.
* @property {boolean} autoCorrectDrift
* If <code>true</code>, ignore the <code>availabilityStartTime</code> in the
* manifest and instead use the segments to determine the live edge. This
* allows us to play streams that have a lot of drift. If <code>false</code>,
* we can't play content where the manifest specifies segments in the future.
* Defaults to <code>true</code>.
* @property {number} initialSegmentLimit
* The maximum number of initial segments to generate for
* <code>SegmentTemplate</code> with fixed-duration segments. This is limited
* to avoid excessive memory consumption with very large
* <code>timeShiftBufferDepth</code> values.
* @property {boolean} ignoreSuggestedPresentationDelay
* If true will cause DASH parser to ignore
* <code>suggestedPresentationDelay</code> from manifest. Defaults to
* <code>false</code> if not provided.
* @property {boolean} ignoreEmptyAdaptationSet
* If true will cause DASH parser to ignore
* empty <code>AdaptationSet</code> from manifest. Defaults to
* <code>false</code> if not provided.
* @property {boolean} ignoreMaxSegmentDuration
* If true will cause DASH parser to ignore
* <code>maxSegmentDuration</code> from manifest. Defaults to
* <code>false</code> if not provided.
* @property {Object.<string, string>} keySystemsByURI
* A map of scheme URI to key system name. Defaults to default key systems
* mapping handled by Shaka.
* @property {function(!Element)} manifestPreprocessor
* <b>DEPRECATED</b>: Use manifestPreprocessorTXml instead.
* Called immediately after the DASH manifest has been parsed into an
* XMLDocument. Provides a way for applications to perform efficient
* preprocessing of the manifest.
* @property {function(!shaka.extern.xml.Node)} manifestPreprocessorTXml
* Called immediately after the DASH manifest has been parsed into an
* XMLDocument. Provides a way for applications to perform efficient
* preprocessing of the manifest.
* @property {boolean} sequenceMode
* If true, the media segments are appended to the SourceBuffer in
* "sequence mode" (ignoring their internal timestamps).
* <i>Defaults to <code>false</code>.</i>
* @property {boolean} enableAudioGroups
* If set, audio streams will be grouped and filtered by their parent
* adaptation set ID.
* <i>Defaults to <code>false</code>.</i>
* @property {boolean} multiTypeVariantsAllowed
* If true, the manifest parser will create variants that have multiple
* mimeTypes or codecs for video or for audio if there is no other choice.
* Meant for content where some periods are only available in one mimeType or
* codec, and other periods are only available in a different mimeType or
* codec. For example, a stream with baked-in ads where the audio codec does
* not match the main content.
* Might result in undesirable behavior if mediaSource.codecSwitchingStrategy
* is not set to SMOOTH.
* Defaults to true if SMOOTH codec switching is supported, RELOAD overwise.
* @property {boolean} useStreamOnceInPeriodFlattening
* If period combiner is used, this option ensures every stream is used
* only once in period flattening. It speeds up underlying algorithm
* but may raise issues if manifest does not have stream consistency
* between periods.
* Defaults to <code>false</code>.
* @property {number} updatePeriod
* Override the minimumUpdatePeriod of the manifest. The value is in second
* if the value is greater than the minimumUpdatePeriod, it will update the
* manifest less frequently. if you update the value during for a dynamic
* manifest, it will directly trigger a new download of the manifest
* Defaults to <code>-1</code>.
* @property {boolean} enableFastSwitching
* If false, disables fast switching track recognition.
* Defaults to <code>true</code>.
* @exportDoc
*/
shaka.extern.DashManifestConfiguration;
/**
* @typedef {{
* ignoreTextStreamFailures: boolean,
* ignoreImageStreamFailures: boolean,
* defaultAudioCodec: string,
* defaultVideoCodec: string,
* ignoreManifestProgramDateTime: boolean,
* ignoreManifestProgramDateTimeForTypes: !Array<string>,
* mediaPlaylistFullMimeType: string,
* useSafariBehaviorForLive: boolean,
* liveSegmentsDelay: number,
* sequenceMode: boolean,
* ignoreManifestTimestampsInSegmentsMode: boolean,
* disableCodecGuessing: boolean,
* disableClosedCaptionsDetection: boolean,
* allowLowLatencyByteRangeOptimization: boolean
* }}
*
* @property {boolean} ignoreTextStreamFailures
* If <code>true</code>, ignore any errors in a text stream and filter out
* those streams.
* @property {boolean} ignoreImageStreamFailures
* If <code>true</code>, ignore any errors in a image stream and filter out
* those streams.
* @property {string} defaultAudioCodec
* The default audio codec if it is not specified in the HLS playlist.
* <i>Defaults to <code>'mp4a.40.2'</code>.</i>
* @property {string} defaultVideoCodec
* The default video codec if it is not specified in the HLS playlist.
* <i>Defaults to <code>'avc1.42E01E'</code>.</i>
* @property {boolean} ignoreManifestProgramDateTime
* If <code>true</code>, the HLS parser will ignore the
* <code>EXT-X-PROGRAM-DATE-TIME</code> tags in the manifest and use media
* sequence numbers instead. It also causes EXT-X-DATERANGE tags to be
* ignored. Meant for streams where <code>EXT-X-PROGRAM-DATE-TIME</code> is
* incorrect or malformed.
* <i>Defaults to <code>false</code>.</i>
* @property {!Array.<string>} ignoreManifestProgramDateTimeForTypes
* An array of strings representing types for which
* <code>EXT-X-PROGRAM-DATE-TIME</code> should be ignored. Only used if the
* the main ignoreManifestProgramDateTime is set to false.
* For example, setting this to ['text', 'video'] will cause the PDT values
* text and video streams to be ignored, while still using the PDT values for
* audio.
* <i>Defaults to an empty array.</i>
* @property {string} mediaPlaylistFullMimeType
* A string containing a full mime type, including both the basic mime type
* and also the codecs. Used when the HLS parser parses a media playlist
* directly, required since all of the mime type and codecs information is
* contained within the master playlist.
* You can use the <code>shaka.util.MimeUtils.getFullType()</code> utility to
* format this value.
* <i>Defaults to
* <code>'video/mp2t; codecs="avc1.42E01E, mp4a.40.2"'</code>.</i>
* @property {boolean} useSafariBehaviorForLive
* If this is true, playback will set the availability window to the
* presentation delay. The player will be able to buffer ahead three
* segments, but the seek window will be zero-sized, to be consistent with
* Safari. If this is false, the seek window will be the entire duration.
* <i>Defaults to <code>true</code>.</i>
* @property {number} liveSegmentsDelay
* The default presentation delay will be calculated as a number of segments.
* This is the number of segments for this calculation..
* <i>Defaults to <code>3</code>.</i>
* @property {boolean} sequenceMode
* If true, the media segments are appended to the SourceBuffer in
* "sequence mode" (ignoring their internal timestamps).
* Defaults to <code>true</code> except on WebOS 3, Tizen 2,
* Tizen 3 and PlayStation 4 whose default value is <code>false</code>.
* @property {boolean} ignoreManifestTimestampsInSegmentsMode
* If true, don't adjust the timestamp offset to account for manifest
* segment durations being out of sync with segment durations. In other
* words, assume that there are no gaps in the segments when appending
* to the SourceBuffer, even if the manifest and segment times disagree.
* Only applies when sequenceMode is <code>false</code>.
* <i>Defaults to <code>false</code>.</i>
* @property {boolean} disableCodecGuessing
* If set to true, the HLS parser won't automatically guess or assume default
* codec for playlists with no "CODECS" attribute. Instead, it will attempt to
* extract the missing information from the media segment.
* As a consequence, lazy-loading media playlists won't be possible for this
* use case, which may result in longer video startup times.
* <i>Defaults to <code>false</code>.</i>
* @property {boolean} disableClosedCaptionsDetection
* If true, disables the automatic detection of closed captions.
* Otherwise, in the absence of a EXT-X-MEDIA tag with TYPE="CLOSED-CAPTIONS",
* Shaka Player will attempt to detect captions based on the media data.
* <i>Defaults to <code>false</code>.</i>
* @property {boolean} allowLowLatencyByteRangeOptimization
* If set to true, the HLS parser will optimize operation with LL and partial
* byte range segments. More info in
* https://www.akamai.com/blog/performance/-using-ll-hls-with-byte-range-addressing-to-achieve-interoperabi
* <i>Defaults to <code>true</code>.</i>
* @exportDoc
*/
shaka.extern.HlsManifestConfiguration;
/**
* @typedef {{
* manifestPreprocessor: function(!Element),
* manifestPreprocessorTXml: function(!shaka.extern.xml.Node),
* sequenceMode: boolean,
* keySystemsBySystemId: !Object.<string, string>
* }}
*
* @property {function(!Element)} manifestPreprocessor
* <b>DEPRECATED</b>: Use manifestPreprocessorTXml instead.
* Called immediately after the MSS manifest has been parsed into an
* XMLDocument. Provides a way for applications to perform efficient
* preprocessing of the manifest.
* @property {function(!shaka.extern.xml.Node)} manifestPreprocessorTXml
* Called immediately after the MSS manifest has been parsed into an
* XMLDocument. Provides a way for applications to perform efficient
* preprocessing of the manifest.
* @property {boolean} sequenceMode
* If true, the media segments are appended to the SourceBuffer in
* "sequence mode" (ignoring their internal timestamps).
* <i>Defaults to <code>false</code>.</i>
* @property {Object.<string, string>} keySystemsBySystemId
* A map of system id to key system name. Defaults to default key systems
* mapping handled by Shaka.
* @exportDoc
*/
shaka.extern.MssManifestConfiguration;
/**
* @typedef {{
* retryParameters: shaka.extern.RetryParameters,
* availabilityWindowOverride: number,
* disableAudio: boolean,
* disableVideo: boolean,
* disableText: boolean,
* disableThumbnails: boolean,
* defaultPresentationDelay: number,
* segmentRelativeVttTiming: boolean,
* dash: shaka.extern.DashManifestConfiguration,
* hls: shaka.extern.HlsManifestConfiguration,
* mss: shaka.extern.MssManifestConfiguration,
* raiseFatalErrorOnManifestUpdateRequestFailure: boolean,
* continueLoadingWhenPaused: boolean
* }}
*
* @property {shaka.extern.RetryParameters} retryParameters
* Retry parameters for manifest requests.
* @property {number} availabilityWindowOverride
* A number, in seconds, that overrides the availability window in the
* manifest, or <code>NaN</code> if the default value should be used. This is
* enforced by the manifest parser, so custom manifest parsers should take
* care to honor this parameter.
* @property {boolean} disableAudio
* If <code>true</code>, the audio tracks are ignored.
* Defaults to <code>false</code>.
* @property {boolean} disableVideo
* If <code>true</code>, the video tracks are ignored.
* Defaults to <code>false</code>.
* @property {boolean} disableText
* If <code>true</code>, the text tracks are ignored.
* Defaults to <code>false</code>.
* @property {boolean} disableThumbnails
* If <code>true</code>, the image tracks are ignored.
* Defaults to <code>false</code>.
* @property {number} defaultPresentationDelay
* A default <code>presentationDelay</code> value.
* For DASH, it's a default <code>presentationDelay</code> value if
* <code>suggestedPresentationDelay</code> is missing in the MPEG DASH
* manifest. The default value is <code>1.5 * minBufferTime</code> if not
* configured or set as 0.
* For HLS, the default value is 3 segments duration if not configured or
* set as 0.
* @property {boolean} segmentRelativeVttTiming
* Option to calculate VTT text timings relative to the segment start
* instead of relative to the period start (which is the default).
* Defaults to <code>false</code>.
* @property {shaka.extern.DashManifestConfiguration} dash
* Advanced parameters used by the DASH manifest parser.
* @property {shaka.extern.HlsManifestConfiguration} hls
* Advanced parameters used by the HLS manifest parser.
* @property {shaka.extern.MssManifestConfiguration} mss
* Advanced parameters used by the MSS manifest parser.
* @property {boolean} raiseFatalErrorOnManifestUpdateRequestFailure
* If true, manifest update request failures will cause a fatal error.
* Defaults to <code>false</code> if not provided.
* @property {boolean} continueLoadingWhenPaused
* If true, live manifest will be updated with the regular intervals even if
* the video is paused.
* Defaults to <code>true</code> if not provided.
* @exportDoc
*/
shaka.extern.ManifestConfiguration;
/**
* @typedef {{
* enabled: boolean,
* stabilityThreshold: number,
* rebufferIncrement: number,
* maxAttempts: number,
* maxLatency: number,
* minLatency: number
* }}
*
* @description
* Dynamic Target Latency configuration options.
*
* @property {boolean} enabled
* If <code>true</code>, dynamic latency for live sync is enabled. When
* enabled, the target latency will be adjusted closer to the min latency
* when playback is stable (see <code>stabilityThreshold</code>). If
* there are rebuffering events, then the target latency will move towards
* the max latency value in increments of <code>rebufferIncrement</code>.
* Defaults to <code>false</code>.
* @property {number} rebufferIncrement
* The value, in seconds, to increment the target latency towards
* <code>maxLatency</code> after a rebuffering event. Defaults to
* <code>0.5</code>.
* @property {number} stabilityThreshold
* Number of seconds after a rebuffering before we are considered stable and
* will move the target latency towards <code>minLatency</code>
* value. Defaults to <code>60</code>
* @property {number} maxAttempts
* Number of times that dynamic target latency will back off to
* <code>maxLatency</code> and attempt to adjust it closer to
* <code>minLatency</code>. Defaults to <code>10</code>
* @property {number} maxLatency
* The latency to use when a rebuffering event causes us to back off from
* the live edge. Defaults to <code>4</code>
* @property {number} minLatency
* The latency to work towards when the network is stable and we want to get
* closer to the live edge. Defaults to <code>1</code>
* @exportDoc
*/
shaka.extern.DynamicTargetLatencyConfiguration;
/**
* @typedef {{
* enabled: boolean,
* targetLatency: number,
* targetLatencyTolerance: number,
* maxPlaybackRate: number,
* minPlaybackRate: number,
* panicMode: boolean,
* panicThreshold: number,
* dynamicTargetLatency: shaka.extern.DynamicTargetLatencyConfiguration
* }}
*
* @description
* LiveSync configuration options.
*
* @property {boolean} enabled
* Enable the live stream sync against the live edge by changing the playback
* rate. Defaults to <code>false</code>.
* Note: on some SmartTVs, if this is activated, it may not work or the sound
* may be lost when activated.
* @property {number} targetLatency
* Preferred latency, in seconds. Effective only if liveSync is true.
* Defaults to <code>0.5</code>.
* @property {number} targetLatencyTolerance
* Latency tolerance for target latency, in seconds. Effective only if
* liveSync is enabled. Defaults to <code>0.5</code>.
* @property {number} maxPlaybackRate
* Max playback rate used for latency chasing. It is recommended to use a
* value between 1 and 2. Effective only if liveSync is enabled. Defaults to
* <code>1.1</code>.
* @property {number} minPlaybackRate
* Minimum playback rate used for latency chasing. It is recommended to use a
* value between 0 and 1. Effective only if liveSync is enabled. Defaults to
* <code>0.95</code>.
* @property {boolean} panicMode
* If <code>true</code>, panic mode for live sync is enabled. When enabled,
* will set the playback rate to the <code>minPlaybackRate</code>
* until playback has continued past a rebuffering for longer than the
* <code>panicThreshold</code>. Defaults to <code>false</code>.
* @property {number} panicThreshold
* Number of seconds that playback stays in panic mode after a rebuffering.
* Defaults to <code>60</code>
* @property {shaka.extern.DynamicTargetLatencyConfiguration}
* dynamicTargetLatency
*
* The dynamic target latency config for dynamically adjusting the target
* latency to be closer to edge when network conditions are good and to back
* off when network conditions are bad.
* @exportDoc
*/
shaka.extern.LiveSyncConfiguration;
/**
* @typedef {{
* retryParameters: shaka.extern.RetryParameters,
* failureCallback: function(!shaka.util.Error),
* rebufferingGoal: number,
* bufferingGoal: number,
* bufferBehind: number,
* evictionGoal: number,
* ignoreTextStreamFailures: boolean,
* alwaysStreamText: boolean,
* startAtSegmentBoundary: boolean,
* gapDetectionThreshold: number,
* gapJumpTimerTime: number,
* durationBackoff: number,
* safeSeekOffset: number,
* stallEnabled: boolean,
* stallThreshold: number,
* stallSkip: number,
* useNativeHlsForFairPlay: boolean,
* inaccurateManifestTolerance: number,
* lowLatencyMode: boolean,
* autoLowLatencyMode: boolean,
* forceHTTP: boolean,
* forceHTTPS: boolean,
* preferNativeHls: boolean,
* updateIntervalSeconds: number,
* dispatchAllEmsgBoxes: boolean,
* observeQualityChanges: boolean,
* maxDisabledTime: number,
* parsePrftBox: boolean,
* segmentPrefetchLimit: number,
* prefetchAudioLanguages: !Array<string>,
* disableAudioPrefetch: boolean,
* disableTextPrefetch: boolean,
* disableVideoPrefetch: boolean,
* liveSync: shaka.extern.LiveSyncConfiguration,
* allowMediaSourceRecoveries: boolean,
* minTimeBetweenRecoveries: number,
* vodDynamicPlaybackRate: boolean,
* vodDynamicPlaybackRateLowBufferRate: number,
* vodDynamicPlaybackRateBufferRatio: number,
* infiniteLiveStreamDuration: boolean,
* preloadNextUrlWindow: number,
* loadTimeout: number,
* clearDecodingCache: boolean,
* dontChooseCodecs: boolean,
* shouldFixTimestampOffset: boolean
* }}
*
* @description
* The StreamingEngine's configuration options.
*
* @property {shaka.extern.RetryParameters} retryParameters
* Retry parameters for segment requests.
* @property {function(!shaka.util.Error)} failureCallback
* A callback to decide what to do on a streaming failure. Default behavior
* is to retry on live streams and not on VOD.
* @property {number} rebufferingGoal
* The minimum number of seconds of content that the StreamingEngine must
* buffer before it can begin playback or can continue playback after it has
* entered into a buffering state (i.e., after it has depleted one more
* more of its buffers).
* @property {number} bufferingGoal
* The number of seconds of content that the StreamingEngine will attempt to
* buffer ahead of the playhead. This value must be greater than or equal to
* the rebuffering goal.
* @property {number} bufferBehind
* The maximum number of seconds of content that the StreamingEngine will keep
* in buffer behind the playhead when it appends a new media segment.
* The StreamingEngine will evict content to meet this limit.
* @property {number} evictionGoal
* The minimum duration in seconds of buffer overflow the StreamingEngine
* requires to start removing content from the buffer.
* Values less than <code>1.0</code> are not recommended.
* @property {boolean} ignoreTextStreamFailures
* If <code>true</code>, the player will ignore text stream failures and
* continue playing other streams.
* @property {boolean} alwaysStreamText
* If <code>true</code>, always stream text tracks, regardless of whether or
* not they are shown. This is necessary when using the browser's built-in
* controls, which are not capable of signaling display state changes back to
* Shaka Player.
* Defaults to <code>false</code>.
* @property {boolean} startAtSegmentBoundary
* If <code>true</code>, adjust the start time backwards so it is at the start
* of a segment. This affects both explicit start times and calculated start
* time for live streams. This can put us further from the live edge. Defaults
* to <code>false</code>.
* @property {number} gapDetectionThreshold
* The maximum distance (in seconds) before a gap when we'll automatically
* jump. This value defaults to <code>0.5</code>.
* @property {number} gapJumpTimerTime
* The polling time in seconds to check for gaps in the media. This value
* defaults to <code>0.25</code>.
* @property {number} durationBackoff
* By default, we will not allow seeking to exactly the duration of a
* presentation. This field is the number of seconds before duration we will
* seek to when the user tries to seek to or start playback at the duration.
* To disable this behavior, the config can be set to 0. We recommend using
* the default value unless you have a good reason not to.
* @property {number} safeSeekOffset
* The amount of seconds that should be added when repositioning the playhead
* after falling out of the availability window or seek. This gives the player
* more time to buffer before falling outside again, but increases the forward
* jump in the stream skipping more content. This is helpful for lower
* bandwidth scenarios. Defaults to 5 if not provided.
* @property {boolean} stallEnabled
* When set to <code>true</code>, the stall detector logic will run. If the
* playhead stops moving for <code>stallThreshold</code> seconds, the player
* will either seek or pause/play to resolve the stall, depending on the value
* of <code>stallSkip</code>.
* @property {number} stallThreshold
* The maximum number of seconds that may elapse without the playhead moving
* (when playback is expected) before it will be labeled as a stall.
* @property {number} stallSkip
* The number of seconds that the player will skip forward when a stall has
* been detected. If 0, the player will pause and immediately play instead of
* seeking. A value of 0 is recommended and provided as default on TV
* platforms (WebOS, Tizen, Chromecast, etc).
* @property {boolean} useNativeHlsForFairPlay
* Desktop Safari has both MediaSource and their native HLS implementation.
* Depending on the application's needs, it may prefer one over the other.
* Warning when disabled: Where single-key DRM streams work fine, multi-keys
* streams is showing unexpected behaviours (stall, audio playing with video
* freezes, ...). Use with care.
* Defaults to <code>true</code>.
* @property {number} inaccurateManifestTolerance
* The maximum difference, in seconds, between the times in the manifest and
* the times in the segments. Larger values allow us to compensate for more
* drift (up to one segment duration). Smaller values reduce the incidence of
* extra segment requests necessary to compensate for drift.
* @property {boolean} lowLatencyMode
* If <code>true</code>, low latency streaming mode is enabled. If
* lowLatencyMode is set to true, it changes the default config values for
* other things, see: docs/tutorials/config.md
* @property {boolean} autoLowLatencyMode
* If the stream is low latency and the user has not configured the
* lowLatencyMode, but if it has been configured to activate the
* lowLatencyMode if a stream of this type is detected, we automatically
* activate the lowLatencyMode. Defaults to false.
* @property {boolean} forceHTTP
* If true, if the protocol is HTTPs change it to HTTP.
* If both forceHTTP and forceHTTPS are set, forceHTTPS wins.
* @property {boolean} forceHTTPS
* If true, if the protocol is HTTP change it to HTTPs.
* If both forceHTTP and forceHTTPS are set, forceHTTPS wins.
* @property {boolean} preferNativeHls
* If true, prefer native HLS playback when possible, regardless of platform.
* @property {number} updateIntervalSeconds
* The minimum number of seconds to see if the manifest has changes.
* @property {boolean} dispatchAllEmsgBoxes
* If true, all emsg boxes are parsed and dispatched.
* @property {boolean} observeQualityChanges
* If true, monitor media quality changes and emit
* <code>shaka.Player.MediaQualityChangedEvent</code>.
* @property {number} maxDisabledTime
* The maximum time a variant can be disabled when NETWORK HTTP_ERROR
* is reached, in seconds.
* If all variants are disabled this way, NETWORK HTTP_ERROR will be thrown.
* @property {boolean} parsePrftBox
* If <code>true</code>, will raise a shaka.extern.ProducerReferenceTime
* player event (event name 'prft').
* The event will be raised only once per playback session as program
* start date will not change, and would save parsing the segment multiple
* times needlessly.
* Defaults to <code>false</code>.
* @property {number} segmentPrefetchLimit
* The maximum number of segments for each active stream to be prefetched
* ahead of playhead in parallel.
* If <code>0</code>, the segments will be fetched sequentially.
* Defaults to <code>0</code>.
* @property {!Array<string>} prefetchAudioLanguages
* The audio languages to prefetch.
* Defaults to an empty array.
* @property {boolean} disableAudioPrefetch
* If set and prefetch limit is defined, it will prevent from prefetching data
* for audio.
* Defaults to <code>false</code>.
* @property {boolean} disableTextPrefetch
* If set and prefetch limit is defined, it will prevent from prefetching data
* for text.
* Defaults to <code>false</code>.
* @property {boolean} disableVideoPrefetch
* If set and prefetch limit is defined, it will prevent from prefetching data
* for video.
* Defaults to <code>false</code>.
* @property {shaka.extern.LiveSyncConfiguration} liveSync
* The live sync configuration for keeping near the live edge.
* @property {boolean} allowMediaSourceRecoveries
* Indicate if we should recover from VIDEO_ERROR resetting Media Source.
* Defaults to <code>true</code>.
* @property {number} minTimeBetweenRecoveries
* The minimum time between recoveries when VIDEO_ERROR is reached, in
* seconds.
* Defaults to <code>5</code>.
* @property {boolean} vodDynamicPlaybackRate
* Adapt the playback rate of the player to keep the buffer full. Defaults to
* <code>false</code>.
* @property {number} vodDynamicPlaybackRateLowBufferRate
* Playback rate to use if the buffer is too small. Defaults to
* <code>0.95</code>.
* @property {number} vodDynamicPlaybackRateBufferRatio
* Ratio of the <code>bufferingGoal</code> as the low threshold for
* setting the playback rate to
* <code>vodDynamicPlaybackRateLowBufferRate</code>.
* Defaults to <code>0.5</code>.
* @property {boolean} infiniteLiveStreamDuration
* If <code>true</code>, the media source live duration
* set as a<code>Infinity</code>
* Defaults to <code> false </code>.
* @property {number} preloadNextUrlWindow
* The window of time at the end of the presentation to begin preloading the
* next URL, such as one specified by a urn:mpeg:dash:chaining:2016 element
* in DASH. Measured in seconds. If the value is 0, the next URL will not
* be preloaded at all.
* Defaults to <code> 30 </code>.
* @property {number} loadTimeout
* The maximum timeout to reject the load when using src= in case the content
* does not work correctly. Measured in seconds.
* Defaults to <code> 30 </code>.
* @property {boolean} clearDecodingCache
* Clears decodingInfo and MediaKeySystemAccess cache during player unload
* as these objects may become corrupt and cause issues during subsequent
* playbacks on some platforms.
* Defaults to <code>true</code> on PlayStation devices and to
* <code>false</code> on other devices.
* @property {boolean} dontChooseCodecs
* If true, we don't choose codecs in the player, and keep all the variants.
* Defaults to <code>false</code>.
* @property {boolean} shouldFixTimestampOffset
* If true, we will try to fix problems when the timestampOffset is less than
* the baseMediaDecodeTime. This only works when the manifest is DASH with
* MP4 segments.
* Defaults to <code>false</code> except on Tizen, WebOS whose default value
* is <code>true</code>.
* @exportDoc
*/
shaka.extern.StreamingConfiguration;
/**
* @typedef {{
* codecSwitchingStrategy: shaka.config.CodecSwitchingStrategy,
* addExtraFeaturesToSourceBuffer: function(string): string,
* forceTransmux: boolean,
* insertFakeEncryptionInInit: boolean,
* modifyCueCallback: shaka.extern.TextParser.ModifyCueCallback
* }}
*
* @description
* Media source configuration.
*
* @property {shaka.config.CodecSwitchingStrategy} codecSwitchingStrategy
* Allow codec switching strategy. SMOOTH loading uses
* SourceBuffer.changeType. RELOAD uses cycling of MediaSource.
* Defaults to SMOOTH if SMOOTH codec switching is supported, RELOAD
* overwise.
* @property {function(string): string} addExtraFeaturesToSourceBuffer
* Callback to generate extra features string based on used MIME type.
* Some platforms may need to pass features when initializing the
* sourceBuffer.
* This string is ultimately appended to a MIME type in addSourceBuffer() &
* changeType().
* @property {boolean} forceTransmux
* If this is <code>true</code>, we will transmux AAC and TS content even if
* not strictly necessary for the assets to be played.
* This value defaults to <code>false</code>.
* @property {boolean} insertFakeEncryptionInInit
* If true, will apply a work-around for non-encrypted init segments on
* encrypted content for some platforms.
* <br><br>
* See https://github.com/shaka-project/shaka-player/issues/2759.
* <br><br>
* If you know you don't need this, you canset this value to
* <code>false</code> to gain a few milliseconds on loading time and seek
* time.
* <br><br>
* This value defaults to <code>true</code>.
* @property {shaka.extern.TextParser.ModifyCueCallback} modifyCueCallback
* A callback called for each cue after it is parsed, but right before it
* is appended to the presentation.
* Gives a chance for client-side editing of cue text, cue timing, etc.
* @exportDoc
*/
shaka.extern.MediaSourceConfiguration;
/**
* @typedef {{
* customPlayheadTracker: boolean,
* skipPlayDetection: boolean,
* supportsMultipleMediaElements: boolean
* }}
*
* @description
* Ads configuration.
*
* @property {boolean} customPlayheadTracker
* If this is <code>true</code>, we create a custom playhead tracker for
* Client Side. This is useful because it allows you to implement the use of
* IMA on platforms that do not support multiple video elements.
* Defaults to <code>false</code> except on Tizen, WebOS, Chromecast,
* Hisense, PlayStation 4, PlayStation5, Xbox whose default value is
* <code>true</code>.
* @property {boolean} skipPlayDetection
* If this is true, we will load Client Side ads without waiting for a play
* event.
* Defaults to <code>false</code> except on Tizen, WebOS, Chromecast,
* Hisense, PlayStation 4, PlayStation5, Xbox whose default value is
* <code>true</code>.
* @property {boolean} supportsMultipleMediaElements
* If this is true, the browser supports multiple media elements.
* Defaults to <code>true</code> except on Tizen, WebOS, Chromecast,
* Hisense, PlayStation 4, PlayStation5, Xbox whose default value is
* <code>false</code>.
*
* @exportDoc
*/
shaka.extern.AdsConfiguration;
/**
* @typedef {{
* enabled: boolean,
* useNetworkInformation: boolean,
* defaultBandwidthEstimate: number,
* restrictions: shaka.extern.Restrictions,
* switchInterval: number,
* bandwidthUpgradeTarget: number,
* bandwidthDowngradeTarget: number,
* advanced: shaka.extern.AdvancedAbrConfiguration,
* restrictToElementSize: boolean,
* restrictToScreenSize: boolean,
* ignoreDevicePixelRatio: boolean,
* clearBufferSwitch: boolean,
* safeMarginSwitch: number,
* cacheLoadThreshold: number,
* minTimeToSwitch: number
* }}
*
* @property {boolean} enabled
* If true, enable adaptation by the current AbrManager. Defaults to true.
* @property {boolean} useNetworkInformation
* If true, use the Network Information API in the current AbrManager, if it
* is available in the browser environment. If the Network Information API is
* used, Shaka Player will ignore the defaultBandwidthEstimate config.
* Defaults to true.
* @property {number} defaultBandwidthEstimate
* The default bandwidth estimate to use if there is not enough data, in
* bit/sec. Only used if useNetworkInformation is false, or if the Network
* Information API is not available.
* @property {shaka.extern.Restrictions} restrictions
* The restrictions to apply to ABR decisions. These are "soft" restrictions.
* Any track that fails to meet these restrictions will not be selected
* automatically, but will still appear in the track list and can still be
* selected via <code>selectVariantTrack()</code>. If no tracks meet these
* restrictions, AbrManager should not fail, but choose a low-res or
* low-bandwidth variant instead. It is the responsibility of AbrManager
* implementations to follow these rules and implement this behavior.
* @property {number} switchInterval
* The minimum amount of time that must pass between switches, in
* seconds. This keeps us from changing too often and annoying the user.
* @property {number} bandwidthUpgradeTarget
* The fraction of the estimated bandwidth which we should try to use when
* upgrading.
* @property {number} bandwidthDowngradeTarget
* The largest fraction of the estimated bandwidth we should use. We should
* downgrade to avoid this.
* @property {shaka.extern.AdvancedAbrConfiguration} advanced
* Advanced ABR configuration
* @property {boolean} restrictToElementSize
* If true, restrict the quality to media element size.
* Note: The use of ResizeObserver is required for it to work properly. If
* true without ResizeObserver, it behaves as false.
* Defaults false.
* @property {boolean} restrictToScreenSize
* If true, restrict the quality to screen size.
* Defaults false.
* @property {boolean} ignoreDevicePixelRatio
* If true,device pixel ratio is ignored when restricting the quality to
* media element size or screen size.
* Defaults false.
* @property {boolean} clearBufferSwitch
* If true, the buffer will be cleared during the switch.
* The default automatic behavior is false to have a smoother transition.
* On some device it's better to clear buffer.
* Defaults false.
* @property {number} safeMarginSwitch
* Optional amount of buffer (in seconds) to
* retain when clearing the buffer during the automatic switch.
* Useful for switching variant quickly without causing a buffering event.
* Defaults to 0 if not provided. Ignored if clearBuffer is false.
* Can cause hiccups on some browsers if chosen too small, e.g.
* The amount of two segments is a fair minimum to consider as safeMargin
* value.
* @property {number} cacheLoadThreshold
* Indicates the value in milliseconds from which a request is not
* considered cached.
* Defaults to <code>20</code>.
* @property {number} minTimeToSwitch
* Indicates the minimum time to change quality once the real bandwidth is
* available, in seconds. This time is only used on the first load.
* Defaults to <code>0</code> seconds except in Apple browsers whose default
* value is <code>0.5</code> seconds.
* @exportDoc
*/
shaka.extern.AbrConfiguration;
/**
* @typedef {{
* minTotalBytes: number,
* minBytes: number,
* fastHalfLife: number,
* slowHalfLife: number
* }}
*
* @property {number} minTotalBytes
* Minimum number of bytes sampled before we trust the estimate. If we have
* not sampled much data, our estimate may not be accurate enough to trust.
* @property {number} minBytes
* Minimum number of bytes, under which samples are discarded. Our models
* do not include latency information, so connection startup time (time to
* first byte) is considered part of the download time. Because of this, we
* should ignore very small downloads which would cause our estimate to be
* too low.
* @property {number} fastHalfLife
* The quantity of prior samples (by weight) used when creating a new
* estimate, in seconds. Those prior samples make up half of the
* new estimate.
* @property {number} slowHalfLife
* The quantity of prior samples (by weight) used when creating a new
* estimate, in seconds. Those prior samples make up half of the
* new estimate.
* @exportDoc
*/
shaka.extern.AdvancedAbrConfiguration;
/**
* @typedef {{
* enabled: boolean,
* useHeaders: boolean,
* sessionId: string,
* contentId: string,
* rtpSafetyFactor: number,
* includeKeys: !Array<string>
* }}
*
* @description
* Common Media Client Data (CMCD) configuration.
*
* @property {boolean} enabled
* If <code>true</code>, enable CMCD data to be sent with media requests.
* Defaults to <code>false</code>.
* @property {boolean} useHeaders
* If <code>true</code>, send CMCD data using the header transmission mode
* instead of query args. Defaults to <code>false</code>.
* @property {string} sessionId
* A GUID identifying the current playback session. A playback session
* typically ties together segments belonging to a single media asset.
* Maximum length is 64 characters. It is RECOMMENDED to conform to the UUID
* specification. By default the sessionId is automatically generated on each
* <code>load()</code> call.
* @property {string} contentId
* A unique string identifying the current content. Maximum length is 64
* characters. This value is consistent across multiple different sessions and
* devices and is defined and updated at the discretion of the service
* provider.
* @property {number} rtpSafetyFactor
* RTP safety factor.
* Defaults to <code>5</code>.
* @property {!Array<string>} includeKeys
* An array of keys to include in the CMCD data. If not provided, all keys
* will be included.
* @exportDoc
*/
shaka.extern.CmcdConfiguration;
/**
* @typedef {{
* enabled: boolean,
* applyMaximumSuggestedBitrate: boolean,
* estimatedThroughputWeightRatio: number
* }}
*
* @description
* Common Media Server Data (CMSD) configuration.
*
* @property {boolean} enabled
* If <code>true</code>, enables reading CMSD data in media requests.
* Defaults to <code>true</code>.
* @property {boolean} applyMaximumSuggestedBitrate
* If true, we must apply the maximum suggested bitrate. If false, we ignore
* this.
* Defaults to <code>true</code>.
* @property {number} estimatedThroughputWeightRatio
* How much the estimatedThroughput of the CMSD data should be weighted
* against the default estimate, between 0 and 1.
* Defaults to <code>0.5</code>.
* @exportDoc
*/
shaka.extern.CmsdConfiguration;
/**
* @typedef {{
* enabled: boolean,
* dynamicPerformanceScaling: boolean,
* logLevel: number,
* drawLogo: boolean
* }}
*
* @description
* Decoding for MPEG-5 Part2 LCEVC.
*
* @property {boolean} enabled
* If <code>true</code>, enable LCEVC.
* Defaults to <code>false</code>.
* @property {boolean} dynamicPerformanceScaling
* If <code>true</code>, LCEVC Dynamic Performance Scaling or dps is enabled
* to be triggered, when the system is not able to decode frames within a
* specific tolerance of the fps of the video and disables LCEVC decoding
* for some time. The base video will be shown upscaled to target resolution.
* If it is triggered again within a short period of time, the disabled
* time will be higher and if it is triggered three times in a row the LCEVC
* decoding will be disabled for that playback session.
* If dynamicPerformanceScaling is false, LCEVC decode will be forced
* and will drop frames appropriately if performance is sub optimal.
* Defaults to <code>true</code>.
* @property {number} logLevel
* Loglevel 0-5 for logging.
* NONE = 0
* ERROR = 1
* WARNING = 2
* INFO = 3
* DEBUG = 4
* VERBOSE = 5
* Defaults to <code>0</code>.
* @property {boolean} drawLogo
* If <code>true</code>, LCEVC Logo is placed on the top left hand corner
* which only appears when the LCEVC enhanced frames are being rendered.
* Defaults to true for the lib but is forced to false in this integration
* unless explicitly set to true through config.
* Defaults to <code>false</code>.
* @exportDoc
*/
shaka.extern.LcevcConfiguration;
/**
* @typedef {{
* trackSelectionCallback:
* function(shaka.extern.TrackList):!Promise<shaka.extern.TrackList>,
* downloadSizeCallback: function(number):!Promise<boolean>,
* progressCallback: function(shaka.extern.StoredContent,number),
* usePersistentLicense: boolean,
* numberOfParallelDownloads: number
* }}
*
* @property {function(shaka.extern.TrackList):!Promise<shaka.extern.TrackList>}
* trackSelectionCallback
* Called inside <code>store()</code> to determine which tracks to save from a
* manifest. It is passed an array of Tracks from the manifest and it should
* return an array of the tracks to store.
* @property {function(number):!Promise<boolean>} downloadSizeCallback
* Called inside <code>store()</code> to determine if the content can be
* downloaded due to its estimated size. The estimated size of the download is
* passed and it must return if the download is allowed or not.
* @property {function(shaka.extern.StoredContent,number)} progressCallback
* Called inside <code>store()</code> to give progress info back to the app.
* It is given the current manifest being stored and the progress of it being
* stored.
* @property {boolean} usePersistentLicense
* If <code>true</code>, store protected content with a persistent license so
* that no network is required to view.
* If <code>false</code>, store protected content without a persistent
* license. A network will be required to retrieve a temporary license to
* view.
* Defaults to <code>true</code>.
* @property {number} numberOfParallelDownloads
* Number of parallel downloads.
* Note: normally browsers limit to 5 request in parallel, so putting a
* number higher than this will not help it download faster.
* Defaults to <code>5</code>.
* @exportDoc
*/
shaka.extern.OfflineConfiguration;
/**
* @typedef {{
* captionsUpdatePeriod: number
* }}
*
* @description
* Text displayer configuration.
*
* @property {number} captionsUpdatePeriod
* The number of seconds to see if the captions should be updated.
* Defaults to <code>0.25</code>.
*
* @exportDoc
*/
shaka.extern.TextDisplayerConfiguration;
/**
* @typedef {{
* ads: shaka.extern.AdsConfiguration,
* autoShowText: shaka.config.AutoShowText,
* drm: shaka.extern.DrmConfiguration,
* manifest: shaka.extern.ManifestConfiguration,
* streaming: shaka.extern.StreamingConfiguration,
* mediaSource: shaka.extern.MediaSourceConfiguration,
* abrFactory: shaka.extern.AbrManager.Factory,
* abr: shaka.extern.AbrConfiguration,
* cmcd: shaka.extern.CmcdConfiguration,
* cmsd: shaka.extern.CmsdConfiguration,
* lcevc: shaka.extern.LcevcConfiguration,
* offline: shaka.extern.OfflineConfiguration,
* preferredAudioLanguage: string,
* preferredAudioLabel: string,
* preferredTextLanguage: string,
* preferredVariantRole: string,
* preferredTextRole: string,
* preferredVideoCodecs: !Array.<string>,
* preferredAudioCodecs: !Array.<string>,
* preferredAudioChannelCount: number,
* preferredVideoHdrLevel: string,
* preferredVideoLayout: string,
* preferredVideoLabel: string,
* preferredDecodingAttributes: !Array.<string>,
* preferForcedSubs: boolean,
* preferSpatialAudio: boolean,
* restrictions: shaka.extern.Restrictions,
* playRangeStart: number,
* playRangeEnd: number,
* textDisplayer: shaka.extern.TextDisplayerConfiguration,
* textDisplayFactory: shaka.extern.TextDisplayer.Factory
* }}
*
* @property {shaka.extern.AdsConfiguration} ads
* Ads configuration and settings.
* @property {shaka.config.AutoShowText} autoShowText
* Controls behavior of auto-showing text tracks on load().
* @property {shaka.extern.DrmConfiguration} drm
* DRM configuration and settings.
* @property {shaka.extern.ManifestConfiguration} manifest
* Manifest configuration and settings.
* @property {shaka.extern.StreamingConfiguration} streaming
* Streaming configuration and settings.
* @property {shaka.extern.MediaSourceConfiguration} mediaSource
* Media source configuration and settings.
* @property {shaka.extern.AbrManager.Factory} abrFactory
* A factory to construct an abr manager.
* @property {shaka.extern.AbrConfiguration} abr
* ABR configuration and settings.
* @property {shaka.extern.CmcdConfiguration} cmcd
* CMCD configuration and settings. (Common Media Client Data)
* @property {shaka.extern.CmsdConfiguration} cmsd
* CMSD configuration and settings. (Common Media Server Data)
* @property {shaka.extern.LcevcConfiguration} lcevc
* MPEG-5 LCEVC configuration and settings.
* (Low Complexity Enhancement Video Codec)
* @property {shaka.extern.OfflineConfiguration} offline
* Offline configuration and settings.
* @property {string} preferredAudioLanguage
* The preferred language to use for audio tracks. If not given it will use
* the <code>'main'</code> track.
* Changing this during playback will not affect the current playback.
* @property {string} preferredAudioLabel
* The preferred label to use for audio tracks
* @property {string} preferredVideoLabel
* The preferred label to use for video tracks
* @property {string} preferredTextLanguage
* The preferred language to use for text tracks. If a matching text track
* is found, and the selected audio and text tracks have different languages,
* the text track will be shown.
* Changing this during playback will not affect the current playback.
* @property {string} preferredVariantRole
* The preferred role to use for variants.
* @property {string} preferredTextRole
* The preferred role to use for text tracks.
* @property {!Array.<string>} preferredVideoCodecs
* The list of preferred video codecs, in order of highest to lowest priority.
* @property {!Array.<string>} preferredAudioCodecs
* The list of preferred audio codecs, in order of highest to lowest priority.
* @property {number} preferredAudioChannelCount
* The preferred number of audio channels.
* @property {string} preferredVideoHdrLevel
* The preferred HDR level of the video. If possible, this will cause the
* player to filter to assets that either have that HDR level, or no HDR level
* at all.
* Can be 'SDR', 'PQ', 'HLG', 'AUTO' for auto-detect, or '' for no preference.
* Defaults to 'AUTO'.
* Note that one some platforms, such as Chrome, attempting to play PQ content
* may cause problems.
* @property {string} preferredVideoLayout
* The preferred video layout of the video.
* Can be 'CH-STEREO', 'CH-MONO', or '' for no preference.
* If the content is predominantly stereoscopic you should use 'CH-STEREO'.
* If the content is predominantly monoscopic you should use 'CH-MONO'.
* Defaults to ''.
* @property {!Array.<string>} preferredDecodingAttributes
* The list of preferred attributes of decodingInfo, in the order of their
* priorities.
* @property {boolean} preferForcedSubs
* If true, a forced text track is preferred. Defaults to false.
* If the content has no forced captions and the value is true,
* no text track is chosen.
* Changing this during playback will not affect the current playback.
* @property {boolean} preferSpatialAudio
* If true, a spatial audio track is preferred. Defaults to false.
* @property {shaka.extern.Restrictions} restrictions
* The application restrictions to apply to the tracks. These are "hard"
* restrictions. Any track that fails to meet these restrictions will not
* appear in the track list. If no tracks meet these restrictions, playback
* will fail.
* @property {number} playRangeStart
* Optional playback and seek start time in seconds. Defaults to 0 if
* not provided.
* @property {number} playRangeEnd
* Optional playback and seek end time in seconds. Defaults to the end of
* the presentation if not provided.
* @property {shaka.extern.TextDisplayerConfiguration} textDisplayer
* Text displayer configuration and settings.
* @property {shaka.extern.TextDisplayer.Factory} textDisplayFactory
* A factory to construct a text displayer. Note that, if this is changed
* during playback, it will cause the text tracks to be reloaded.
* @exportDoc
*/
shaka.extern.PlayerConfiguration;
/**
* @typedef {{
* language: string,
* role: string,
* label: ?string
* }}
*
* @property {string} language
* The language code for the stream.
* @property {string} role
* The role name for the stream. If the stream has no role, <code>role</code>
* will be <code>''</code>.
* @property {?string} label
* The label of the audio stream, if it has one.
* @exportDoc
*/
shaka.extern.LanguageRole;
/**
* @typedef {{
* segment: shaka.media.SegmentReference,
* imageHeight: number,
* imageWidth: number,
* height: number,
* positionX: number,
* positionY: number,
* startTime: number,
* duration: number,
* uris: !Array.<string>,
* width: number,
* sprite: boolean
* }}
*
* @property {shaka.media.SegmentReference} segment
* The segment of this thumbnail.
* @property {number} imageHeight
* The image height in px. The image height could be different to height if
* the layout is different to 1x1.
* @property {number} imageWidth
* The image width in px. The image width could be different to width if
* the layout is different to 1x1.
* @property {number} height
* The thumbnail height in px.
* @property {number} positionX
* The thumbnail left position in px.
* @property {number} positionY
* The thumbnail top position in px.
* @property {number} startTime
* The start time of the thumbnail in the presentation timeline, in seconds.
* @property {number} duration
* The duration of the thumbnail, in seconds.
* @property {!Array.<string>} uris
* An array of URIs to attempt. They will be tried in the order they are
* given.
* @property {number} width
* The thumbnail width in px.
* @property {boolean} sprite
* Indicate if the thumbnail is a sprite.
* @exportDoc
*/
shaka.extern.Thumbnail;
/**
* @typedef {{
* id: string,
* title: string,
* startTime: number,
* endTime: number
* }}
*
* @property {string} id
* The id of the chapter.
* @property {string} title
* The title of the chapter.
* @property {number} startTime
* The time that describes the beginning of the range of the chapter.
* @property {number} endTime
* The time that describes the end of the range of chapter.
* @exportDoc
*/
shaka.extern.Chapter;