/**
* @license
* Copyright 2016 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/** @externs */
/**
* @typedef {{
* timestamp: number,
* id: number,
* type: string,
* fromAdaptation: boolean
* }}
*
* @property {number} timestamp
* The timestamp the choice was made, in seconds since 1970
* (i.e. Date.now() / 1000).
* @property {number} id
* The id of the stream that was chosen.
* @property {string} type
* The type of stream chosen ('audio', 'text', or 'video')
* @property {boolean} fromAdaptation
* True if the choice was made by AbrManager for adaptation; false if it
* was made by the application through selectTrack.
* @exportDoc
*/
shakaExtern.StreamChoice;
/**
* @typedef {{
* width: number,
* height: number,
* streamBandwidth: number,
*
* decodedFrames: number,
* droppedFrames: number,
* estimatedBandwidth: number,
* playTime: number,
* bufferingTime: number,
*
* switchHistory: !Array.<shakaExtern.StreamChoice>
* }}
*
* @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 load() is called again.
*
* @property {number} width
* The width of the current video track.
* @property {number} height
* The height of the current video track.
* @property {number} streamBandwidth
* The bandwidth required for the current streams (total, in bit/sec).
*
* @property {number} decodedFrames
* The total number of frames decoded by the Player. This may be NaN if this
* is not supported by the browser.
* @property {number} droppedFrames
* The total number of frames dropped by the Player. This may be NaN if this
* is not supported by the browser.
* @property {number} estimatedBandwidth
* The current estimated network bandwidth (in bit/sec).
* @property {number} playTime
* The total time spent in a playing state in seconds.
* @property {number} bufferingTime
* The total time spent in a buffering state in seconds.
*
* @property {!Array.<shakaExtern.StreamChoice>} switchHistory
* A history of the stream changes.
* @exportDoc
*/
shakaExtern.Stats;
/**
* @typedef {{
* id: number,
* active: boolean,
*
* type: string,
* bandwidth: number,
*
* language: string,
* kind: ?string,
* width: ?number,
* height: ?number
* }}
*
* @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 the Stream type.
*
* @property {number} id
* The unique ID of the track.
* @property {boolean} active
* If true, this is the track is being streamed (another track may be
* visible/audible in the buffer).
*
* @property {string} type
* The type of track, one of 'audio', 'text', or 'video'.
* @property {number} bandwidth
* The bandwidth required to play the track, in bits/sec.
*
* @property {string} language
* The language of the track, or '' for video tracks. This is the exact
* value provided in the manifest; it may need to be normalized.
* @property {?string} kind
* (only for text tracks) The kind of text track, either 'captions' or
* 'subtitles'.
* @property {?number} width
* (only for video tracks) The width of the track in pixels.
* @property {?number} height
* (only for video tracks) The height of the track in pixels.
* @exportDoc
*/
shakaExtern.Track;
/**
* @typedef {{
* minWidth: number,
* maxWidth: number,
* minHeight: number,
* maxHeight: number,
* minPixels: number,
* maxPixels: number,
*
* minAudioBandwidth: number,
* maxAudioBandwidth: number,
* minVideoBandwidth: number,
* maxVideoBandwidth: number
* }}
*
* @description
* An object describing application restrictions on what tracks can play. All
* restrictions must be fulfilled for a track to be playable. If a track does
* not meet the restrictions, it will not appear in the track list and it will
* not be played.
*
* @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. width * height).
* @property {number} maxPixels
* The maximum number of total pixels in a video track (i.e. width * height).
*
* @property {number} minAudioBandwidth
* The minimum bandwidth of an audio track, in bit/sec.
* @property {number} maxAudioBandwidth
* The maximum bandwidth of an audio track, in bit/sec.
* @property {number} minVideoBandwidth
* The minimum bandwidth of a video track, in bit/sec.
* @property {number} maxVideoBandwidth
* The maximum bandwidth of a video track, in bit/sec.
* @exportDoc
*/
shakaExtern.Restrictions;
/**
* @typedef {{
* persistentState: boolean
* }}
*
* @property {boolean} persistentState
* Whether this key system supports persistent state.
*/
shakaExtern.DrmSupportType;
/**
* @typedef {{
* manifest: !Object.<string, boolean>,
* media: !Object.<string, boolean>,
* drm: !Object.<string, ?shakaExtern.DrmSupportType>
* }}
*
* @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, ?shakaExtern.DrmSupportType>} drm
* A map of supported key systems.
* The keys are the key system names. The value is null if it is not
* supported. Key systems not probed will not be in this dictionary.
*
* @exportDoc
*/
shakaExtern.SupportType;
/**
* @typedef {function(!Element):Array.<shakaExtern.DrmInfo>}
* @see shakaExtern.DashManifestConfiguration
* @exportDoc
*/
shakaExtern.DashContentProtectionCallback;
/**
* @typedef {{
* distinctiveIdentifierRequired: boolean,
* persistentStateRequired: boolean,
* videoRobustness: string,
* audioRobustness: string,
* serverCertificate: Uint8Array
* }}
*
* @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 '', i.e., no specific robustness required.</i> <br>
* @property {string} audioRobustness
* A key-system-specific string that specifies a required security level for
* audio.
* <i>Defaults to '', i.e., no specific robustness required.</i> <br>
* @property {Uint8Array} serverCertificate
* <i>Defaults to null, i.e., 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.
*
* @exportDoc
*/
shakaExtern.AdvancedDrmConfiguration;
/**
* @typedef {{
* retryParameters: shakaExtern.RetryParameters,
* servers: !Object.<string, string>,
* clearKeys: !Object.<string, string>,
* advanced: Object.<string, shakaExtern.AdvancedDrmConfiguration>
* }}
*
* @property {shakaExtern.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, {'com.widevine.alpha': 'http://example.com/drm'}.
* @property {!Object.<string, string>} clearKeys
* <i>Forces the use of the Clear Key CDM.</i>
* A map of key IDs (hex) to keys (hex).
* @property {Object.<string, shakaExtern.AdvancedDrmConfiguration>} advanced
* <i>Optional.</i> <br>
* A dictionary which maps key system IDs to advanced DRM configuration for
* those key systems.
*
* @exportDoc
*/
shakaExtern.DrmConfiguration;
/**
* @typedef {{
* customScheme: shakaExtern.DashContentProtectionCallback,
* clockSyncUri: string
* }}
*
* @property {shakaExtern.DashContentProtectionCallback} customScheme
* If given, invoked by a DASH manifest parser to interpret custom or
* non-standard DRM schemes found in the manifest. The argument is a
* ContentProtection node. Return null if not recognized.
* @property {string} clockSyncUri
* A default clock sync URI to be used with live streams which do not
* contain any clock sync information. The "Date" header from this URI
* will be used to determine the current time.
*
* @exportDoc
*/
shakaExtern.DashManifestConfiguration;
/**
* @typedef {{
* retryParameters: shakaExtern.RetryParameters,
* dash: shakaExtern.DashManifestConfiguration
* }}
*
* @property {shakaExtern.RetryParameters} retryParameters
* Retry parameters for manifest requests.
* @property {shakaExtern.DashManifestConfiguration} dash
* Advanced parameters used by the DASH manifest parser.
*
* @exportDoc
*/
shakaExtern.ManifestConfiguration;
/**
* @typedef {{
* retryParameters: shakaExtern.RetryParameters,
* rebufferingGoal: number,
* bufferingGoal: number,
* bufferBehind: number
* }}
*
* @description
* The StreamingEngine's configuration options.
*
* @property {shakaExtern.RetryParameters} retryParameters
* Retry parameters for segment requests.
* @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.
*
* @exportDoc
*/
shakaExtern.StreamingConfiguration;
/**
* @typedef {{
* manager: shakaExtern.AbrManager,
* enabled: boolean,
* defaultBandwidthEstimate: number
* }}
*
* @property {shakaExtern.AbrManager} manager
* The AbrManager instance.
* @property {boolean} enabled
* If true, enable adaptation by the current AbrManager. Defaults to true.
* @property {number} defaultBandwidthEstimate
* The default bandwidth estimate to use if there is not enough data, in
* bit/sec.
* @exportDoc
*/
shakaExtern.AbrConfiguration;
/**
* @typedef {{
* drm: shakaExtern.DrmConfiguration,
* manifest: shakaExtern.ManifestConfiguration,
* streaming: shakaExtern.StreamingConfiguration,
* abr: shakaExtern.AbrConfiguration,
* preferredAudioLanguage: string,
* preferredTextLanguage: string,
* restrictions: shakaExtern.Restrictions
* }}
*
* @property {shakaExtern.DrmConfiguration} drm
* DRM configuration and settings.
* @property {shakaExtern.ManifestConfiguration} manifest
* Manifest configuration and settings.
* @property {shakaExtern.StreamingConfiguration} streaming
* Streaming configuration and settings.
* @property {shakaExtern.AbrConfiguration} abr
* ABR configuration and settings.
* @property {string} preferredAudioLanguage
* The preferred language to use for audio tracks. If not given it will use
* the 'main' track.
* Changing this during playback will cause the language selection algorithm
* to run again, and may change the active audio track.
* @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 cause the language selection algorithm
* to run again, and may change the active text track.
* @property {shakaExtern.Restrictions} restrictions
* The application restrictions to apply to the tracks. The track must
* meet all the restrictions to be playable.
* @exportDoc
*/
shakaExtern.PlayerConfiguration;