/*! @license * Shaka Player * Copyright 2016 Google LLC * SPDX-License-Identifier: Apache-2.0 *//** * @externs *//** * @typedef {{ * basic: boolean, * encrypted: !Object.<string, boolean> * }} * * @property {boolean} basic * True if offline is usable at all. * @property {!Object.<string, boolean>} encrypted * A map of key system name to whether it supports offline playback. * @exportDoc */shaka.extern.OfflineSupport;/** * @typedef {{ * offlineUri: ?string, * originalManifestUri: string, * duration: number, * size: number, * expiration: number, * tracks: !Array.<shaka.extern.Track>, * appMetadata: Object, * isIncomplete: boolean * }} * * @property {?string} offlineUri * An offline URI to access the content. This can be passed directly to * Player. If the uri is null, it means that the content has not finished * downloading and is not ready to play. * @property {string} originalManifestUri * The original manifest URI of the content stored. * @property {number} duration * The duration of the content, in seconds. * @property {number} size * The size of the content, in bytes. * @property {number} expiration * The time that the encrypted license expires, in milliseconds. If the media * is clear or the license never expires, this will equal Infinity. * @property {!Array.<shaka.extern.Track>} tracks * The tracks that are stored. * @property {Object} appMetadata * The metadata passed to store(). * @property {boolean} isIncomplete * If true, the content is still downloading. Manifests with this set cannot * be played yet. * @exportDoc */shaka.extern.StoredContent;/** * @typedef {{ * creationTime: number, * originalManifestUri: string, * duration: number, * size: number, * expiration: number, * streams: !Array.<shaka.extern.StreamDB>, * sessionIds: !Array.<string>, * drmInfo: ?shaka.extern.DrmInfo, * appMetadata: Object, * isIncomplete: (boolean|undefined), * sequenceMode: (boolean|undefined), * type: (string|undefined) * }} * * @property {number} creationTime * The date time when the asset was created. * @property {string} originalManifestUri * The URI that the manifest was originally loaded from. * @property {number} duration * The total duration of the media, in seconds. * @property {number} size * The total size of all stored segments, in bytes. * @property {number} expiration * The license expiration, in milliseconds; or Infinity if not applicable. * Note that upon JSON serialization, Infinity becomes null, and must be * converted back upon loading from storage. * @property {!Array.<shaka.extern.StreamDB>} streams * The Streams that are stored. * @property {!Array.<string>} sessionIds * The DRM offline session IDs for the media. * @property {?shaka.extern.DrmInfo} drmInfo * The DRM info used to initialize EME. * @property {Object} appMetadata * A metadata object passed from the application. * @property {(boolean|undefined)} isIncomplete * If true, the content is still downloading. * @property {(boolean|undefined)} sequenceMode * If true, we will append the media segments using sequence mode; that is to * say, ignoring any timestamps inside the media files. * @property {(string|undefined)} type * Indicates the type of the manifest. It can be <code>'HLS'</code> or * <code>'DASH'</code>. */shaka.extern.ManifestDB;/** * @typedef {{ * id: number, * originalId: ?string, * groupId: ?string, * primary: boolean, * type: string, * mimeType: string, * codecs: string, * frameRate: (number|undefined), * pixelAspectRatio: (string|undefined), * hdr: (string|undefined), * videoLayout: (string|undefined), * kind: (string|undefined), * language: string, * originalLanguage: (?string|undefined), * label: ?string, * width: ?number, * height: ?number, * encrypted: boolean, * keyIds: !Set.<string>, * segments: !Array.<shaka.extern.SegmentDB>, * variantIds: !Array.<number>, * roles: !Array.<string>, * forced: boolean, * channelsCount: ?number, * audioSamplingRate: ?number, * spatialAudio: boolean, * closedCaptions: Map.<string, string>, * tilesLayout: (string|undefined), * external: boolean, * fastSwitching: boolean * }} * * @property {number} id * The unique id of the stream. * @property {?string} originalId * The original ID, if any, that appeared in the manifest. For example, in * DASH, this is the "id" attribute of the Representation element. * @property {?string} groupId * The ID of the stream's parent element. In DASH, this will be a unique * ID that represents the representation's parent adaptation element * @property {boolean} primary * Whether the stream set was primary. * @property {string} type * The type of the stream, 'audio', 'text', or 'video'. * @property {string} mimeType * The MIME type of the stream. * @property {string} codecs * The codecs of the stream. * @property {(number|undefined)} frameRate * The Stream's framerate in frames per second. * @property {(string|undefined)} pixelAspectRatio * The Stream's pixel aspect ratio * @property {(string|undefined)} hdr * The Stream's HDR info * @property {(string|undefined)} videoLayout * The Stream's video layout info. * @property {(string|undefined)} kind * The kind of text stream; undefined for audio/video. * @property {string} language * The language of the stream; '' for video. * @property {(?string|undefined)} originalLanguage * The original language, if any, that appeared in the manifest. * @property {?string} label * The label of the stream; '' for video. * @property {?number} width * The width of the stream; null for audio/text. * @property {?number} height * The height of the stream; null for audio/text. * @property {boolean} encrypted * Whether this stream is encrypted. * @property {!Set.<string>} keyIds * The key IDs this stream is encrypted with. * @property {!Array.<shaka.extern.SegmentDB>} segments * An array of segments that make up the stream. * @property {!Array.<number>} variantIds * An array of ids of variants the stream is a part of. * @property {!Array.<string>} roles * The roles of the stream as they appear on the manifest, * e.g. 'main', 'caption', or 'commentary'. * @property {boolean} forced * Whether the stream set was forced. * @property {?number} channelsCount * The channel count information for the audio stream. * @property {?number} audioSamplingRate * Specifies the maximum sampling rate of the content. * @property {boolean} spatialAudio * Whether the stream set has spatial audio. * @property {Map.<string, string>} closedCaptions * A map containing the description of closed captions, with the caption * channel number (CC1 | CC2 | CC3 | CC4) as the key and the language code * as the value. If the channel number is not provided by the description, * we'll set a 0-based index as the key. If the language code is not * provided by the description we'll set the same value as channel number. * Example: {'CC1': 'eng'; 'CC3': 'swe'}, or {'1', 'eng'; '2': 'swe'}, etc. * @property {(string|undefined)} 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} external * Indicate if the stream was added externally. * Eg: external text tracks. * @property {boolean} fastSwitching * Indicate if the stream should be used for fast switching. */shaka.extern.StreamDB;/** * @typedef {{ * initSegmentKey: ?number, * startTime: number, * endTime: number, * appendWindowStart: number, * appendWindowEnd: number, * timestampOffset: number, * tilesLayout: ?string, * pendingSegmentRefId: (string|undefined), * pendingInitSegmentRefId: (string|undefined), * dataKey: number * }} * * @property {?number} initSegmentKey * The storage key where the init segment is found; null if no init segment. * @property {number} startTime * The start time of the segment in the presentation timeline. * @property {number} endTime * The end time of the segment in the presentation timeline. * @property {number} appendWindowStart * A start timestamp before which media samples will be truncated. * @property {number} appendWindowEnd * An end timestamp beyond which media samples will be truncated. * @property {number} timestampOffset * An offset which MediaSource will add to the segment's media timestamps * during ingestion, to align to the presentation timeline. * @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 {(string|undefined)} pendingSegmentRefId * Contains an id that identifies what the segment was, originally. Used to * coordinate where segments are stored, during the downloading process. * If this field is non-null, it's assumed that the segment is not fully * downloaded. * @property {(string|undefined)} pendingInitSegmentRefId * Contains an id that identifies what the init segment was, originally. * Used to coordinate where init segments are stored, during the downloading * process. * If this field is non-null, it's assumed that the init segment is not fully * downloaded. * @property {number} dataKey * The key to the data in storage. */shaka.extern.SegmentDB;/** * @typedef {{ * data: !ArrayBuffer * }} * * @property {!ArrayBuffer} data * The data contents of the segment. */shaka.extern.SegmentDataDB;/** * @typedef {{ * sessionId: string, * keySystem: string, * licenseUri: string, * serverCertificate: Uint8Array, * audioCapabilities: !Array.<MediaKeySystemMediaCapability>, * videoCapabilities: !Array.<MediaKeySystemMediaCapability> * }} * * @property {string} sessionId * The EME session ID. * @property {string} keySystem * The EME key system string the session belongs to. * @property {string} licenseUri * The URI for the license server. * @property {Uint8Array} serverCertificate * 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 {!Array.<MediaKeySystemMediacapability>} audioCapabilities * The EME audio capabilities used to create the session. * @property {!Array.<MediaKeySystemMediacapability>} videoCapabilities * The EME video capabilities used to create the session. */shaka.extern.EmeSessionDB;/** * An interface that defines access to collection of segments and manifests. All * methods are designed to be batched operations allowing the implementations to * optimize their operations based on how they store data. * * The storage cell is one of two exposed APIs used to control where and how * offline content is saved. The storage cell is responsible for converting * information between its internal structures and the external (library) * structures. * * @interface */shaka.extern.StorageCell = class { constructor() {} /** * Free all resources used by this cell. This should not affect the stored * content. * * @return {!Promise} */ destroy() {} /** * Check if the cell can support new keys. If a cell has a fixed key space, * then all add-operations will fail as no new keys can be added. All * remove-operations and update-operations should still work. * * @return {boolean} */ hasFixedKeySpace() {} /** * Add a group of segments. Will return a promise that resolves with a list * of keys for each segment. If one segment fails to be added, all segments * should fail to be added. * * @param {!Array.<shaka.extern.SegmentDataDB>} segments * @return {!Promise.<!Array.<number>>} */ addSegments(segments) {} /** * Remove a group of segments using their keys to identify them. If a key * is not found, then that removal should be considered successful. * * @param {!Array.<number>} keys * @param {function(number)} onRemove A callback for when a segment is removed * from the cell. The key of the segment * will be passed to the callback. * @return {!Promise} */ removeSegments(keys, onRemove) {} /** * Get a group of segments using their keys to identify them. If any key is * not found, the promise chain will be rejected. * * @param {!Array.<number>} keys * @return {!Promise.<!Array.<shaka.extern.SegmentDataDB>>} */ getSegments(keys) {} /** * Add a group of manifests. Will return a promise that resolves with a list * of keys for each manifest. If one manifest fails to be added, all manifests * should fail to be added. * * @param {!Array.<shaka.extern.ManifestDB>} manifests * @return {!Promise<!Array.<number>>} keys */ addManifests(manifests) {} /** * Updates the given manifest, stored at the given key. * * @param {number} key * @param {!shaka.extern.ManifestDB} manifest * @return {!Promise} */ updateManifest(key, manifest) {} /** * Replace the expiration time of the manifest stored under |key| with * |newExpiration|. If no manifest is found under |key| then this should * act as a no-op. * * @param {number} key * @param {number} expiration * @return {!Promise} */ updateManifestExpiration(key, expiration) {} /** * Remove a group of manifests using their keys to identify them. If a key * is not found, then that removal should be considered successful. * * @param {!Array.<number>} keys * @param {function(number)} onRemove A callback for when a manifest is * removed from the cell. The key of the * manifest will be passed to the callback. * @return {!Promise} */ removeManifests(keys, onRemove) {} /** * Get a group of manifests using their keys to identify them. If any key is * not found, the promise chain will be rejected. * * @param {!Array.<number>} keys * @return {!Promise<!Array.<shaka.extern.ManifestDB>>} */ getManifests(keys) {} /** * Get all manifests stored in this cell. Since manifests are small compared * to the asset they describe, it is assumed that it is feasible to have them * all in main memory at one time. * * @return {!Promise<!Map.<number, shaka.extern.ManifestDB>>} */ getAllManifests() {}};/** * Similar to storage cells (shaka.extern.StorageCell), an EmeSessionStorageCell * stores data persistently. This only stores the license's session info, not * the license itself. The license itself is stored using EME. * * @interface */shaka.extern.EmeSessionStorageCell = class { constructor() {} /** * Free all resources used by this cell. This won't affect the stored content. * @return {!Promise} */ destroy() {} /** * Gets the currently stored sessions. * @return {!Promise.<!Array.<shaka.extern.EmeSessionDB>>} */ getAll() {} /** * Adds the given sessions to the store. * @param {!Array.<shaka.extern.EmeSessionDB>} sessions * @return {!Promise} */ add(sessions) {} /** * Removes the given session IDs from the store. * @param {!Array.<string>} sessionIds * @return {!Promise} */ remove(sessionIds) {}};/** * Storage mechanisms are one of two exported storage APIs. Storage mechanisms * are groups of storage cells (shaka.extern.StorageCell). Storage mechanisms * are responsible for managing the life cycle of resources shared between * storage cells in the same block. * * For example, a storage mechanism may manage a single database connection * while each cell would manage different tables in the database via the same * connection. * * @interface */shaka.extern.StorageMechanism = class { constructor() {} /** * Initialize the storage mechanism for first use. This should only be called * once. Calling |init| multiple times has an undefined behaviour. * * @return {!Promise} */ init() {} /** * Free all resources used by the storage mechanism and its cells. This should * not affect the stored content. * * @return {!Promise} */ destroy() {} /** * Get a map of all the cells managed by the storage mechanism. Editing the * map should have no effect on the storage mechanism. The map key is the * cell's address in the mechanism and should be consistent between calls to * |getCells|. * * @return {!Map.<string, !shaka.extern.StorageCell>} */ getCells() {} /** * Get the current EME session storage cell. * @return {!shaka.extern.EmeSessionStorageCell} */ getEmeSessionCell() {} /** * Erase all content from storage and leave storage in an empty state. Erase * may be called with or without |init|. This allows for storage to be wiped * in case of a version mismatch. * * After calling |erase|, the mechanism will be in an initialized state. * * @return {!Promise} */ erase() {}};