JSDoc: Class: shaka.offline.Storage

Constructor

new Storage(playeropt, non-null)

This manages persistent offline data including storage, listing, and deleting stored manifests. Playback of offline manifests are done through the Player using a special URI (see shaka.offline.OfflineUri). First, check support() to see if offline is supported by the platform. Second, configure() the storage object with callbacks to your application. Third, call store(), remove(), or list() as needed. When done, call destroy().

Parameters:

Name	Type	Attributes	Description
`player`	shaka.Player	<optional>	A player instance to share a networking engine and configuration with. When initializing with a player, storage is only valid as long as \|destroy\| has not been called on the player instance. When omitted, storage will manage its own networking engine and configuration.

Implements:

shaka.util.IDestroyable

Source:

lib/offline/storage.js, line 52

Members

config_ :shaka.extern.PlayerConfiguration

Type:

shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 76

destroyer_ :shaka.util.Destroyer

Type:

shaka.util.Destroyer

Source:

lib/offline/storage.js, line 121

networkingEngine_ :shaka.net.NetworkingEngine

Type:

shaka.net.NetworkingEngine

Source:

lib/offline/storage.js, line 79

openDownloadManagers_ :Array.<!shaka.offline.DownloadManager>

A list of open download managers that are being used to download things.

Type:

Array.<!shaka.offline.DownloadManager>

Source:

lib/offline/storage.js, line 109

openOperations_ :Array.<!Promise>

A list of open operations that are being performed by this instance of |shaka.offline.Storage|.

Type:

Array.<!Promise>

Source:

lib/offline/storage.js, line 102

Methods

assignSegmentsToManifest(storage, manifestId, manifestDBnon-null, manifestUpdatesnon-null, dataSizeUpdate, throwIfAbortedFn) → {Promise}

Updates the given manifest, assigns database keys to segments, then stores the updated manifest. It is up to the caller to ensure that this method is not called concurrently on the same manifest.

Parameters:

Name	Type	Description
`storage`	shaka.extern.StorageCell
`manifestId`	number
`manifestDB`	shaka.extern.ManifestDB
`manifestUpdates`	Object.<string, number>
`dataSizeUpdate`	number
`throwIfAbortedFn`	function()	A function that should throw if the download has been aborted.

Source:

lib/offline/storage.js, line 582

Returns:

Type: Promise

cleanStoredManifest(manifestId) → {Promise}

Removes all of the contents for a given manifest, statelessly.

Parameters:

Name	Type	Description
`manifestId`	number

Source:

lib/offline/storage.js, line 553

Returns:

Type: Promise

deleteAll() → {Promise}

Delete the on-disk storage and all the content it contains. This should not be done in normal circumstances. Only do it when storage is rendered unusable, such as by a version mismatch. No business logic will be run, and licenses will not be released.

Source:

lib/offline/storage.js, line 1534

Returns:

Type: Promise

deleteLicenseFor_(netnon-null, drmConfignon-null, muxernon-null, manifestDb) → {Promise}

Parameters:

Name	Type	Description
`net`	shaka.net.NetworkingEngine
`drmConfig`	shaka.extern.DrmConfiguration
`muxer`	shaka.offline.StorageMuxer
`manifestDb`	shaka.extern.ManifestDB

Source:

lib/offline/storage.js, line 1554

Returns:

Type: Promise

forEachSegment_(stream, startTime, callback)

Parameters:

Name	Type	Description
`stream`	shaka.extern.Stream
`startTime`	number
`callback`	function(!shaka.media.SegmentReference)

Source:

lib/offline/storage.js, line 1415

getAllSegmentIds_(manifest) → {Array.<number>}

Parameters:

Name	Type	Description
`manifest`	shaka.extern.ManifestDB

Source:

lib/offline/storage.js, line 1507

Returns:

Type: Array.<number>

getAllStreamsFromManifest_(manifest) → {Set.<shaka.extern.Stream>}

Get the set of all streams in |manifest|.

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest

Source:

lib/offline/storage.js, line 1594

Returns:

Type: Set.<shaka.extern.Stream>

getCapabilities_(manifestDb, isVideo) → {Array.<MediaKeySystemMediaCapability>}

Parameters:

Name	Type	Description
`manifestDb`	shaka.extern.ManifestDB
`isVideo`	boolean

Source:

lib/offline/storage.js, line 961

Returns:

Type: Array.<MediaKeySystemMediaCapability>

support() → {boolean}

Gets whether offline storage is supported. Returns true if offline storage is supported for clear content. Support for offline storage of encrypted content will not be determined until storage is attempted.

Source:

lib/offline/storage.js, line 156

Returns:

Type: boolean

validateManifest_(manifest)

Go over a manifest and issue warnings for any suspicious properties.

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest

Source:

lib/offline/storage.js, line 1624

configure(config, valueopt) → {boolean}

Sets configuration values for Storage. This is associated with Player.configure and will change the player instance given at initialization.

Parameters:

Name	Type	Attributes	Description
`config`	string \| Object		This should either be a field name or an object following the form of shaka.extern.PlayerConfiguration, where you may omit any field you do not wish to change.
`value`	*	<optional>	This should be provided if the previous parameter was a string field name.

Source:

lib/offline/storage.js, line 188

Returns:

Type: boolean

createDrmEngine(manifest, onError, config) → {Promise.<!shaka.media.DrmEngine>}

This method is public so that it can be override in testing.

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest
`onError`	function(shaka.util.Error)
`config`	shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 1227

Returns:

Type: Promise.<!shaka.media.DrmEngine>

createStream_(downloadernon-null, estimator, manifest, stream, config, toDownloadnon-null) → {shaka.extern.StreamDB}

Converts a manifest stream to a database stream. This will search the segment index and add all the segments to the download infos.

Parameters:

Name	Type	Description
`downloader`	shaka.offline.DownloadManager
`estimator`	shaka.offline.StreamBandwidthEstimator
`manifest`	shaka.extern.Manifest
`stream`	shaka.extern.Stream
`config`	shaka.extern.PlayerConfiguration
`toDownload`	Map.<string, !shaka.offline.DownloadInfo>

Source:

lib/offline/storage.js, line 1309

Returns:

Type: shaka.extern.StreamDB

createStreams_(downloadernon-null, estimator, drmEnginenon-null, manifest, config) → {{streams: !Array.<shaka.extern.StreamDB>, toDownload: !Array.<!shaka.offline.DownloadInfo>}}

Converts manifest Streams to database Streams.

Parameters:

Name	Type	Description
`downloader`	shaka.offline.DownloadManager
`estimator`	shaka.offline.StreamBandwidthEstimator
`drmEngine`	shaka.media.DrmEngine
`manifest`	shaka.extern.Manifest
`config`	shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 1263

Returns:

Type: {streams: !Array.<shaka.extern.StreamDB>, toDownload: !Array.<!shaka.offline.DownloadInfo>}

destroy() → {Promise}

Request that this object be destroyed, releasing all resources and shutting down all operations. Returns a Promise which is resolved when destruction is complete. This Promise should never be rejected.

Implements:

shaka.util.IDestroyable#destroy

Source:

lib/offline/storage.js, line 171

Returns:

Type: Promise

downloadSegments_(toDownloadnon-null, manifestId, manifestDB, downloadernon-null, config, storage, manifest, drmEnginenon-null) → {Promise}

Download and then store the contents of each segment. The promise this returns will wait for local downloads.

Parameters:

Name	Type	Description
`toDownload`	Array.<!shaka.offline.DownloadInfo>
`manifestId`	number
`manifestDB`	shaka.extern.ManifestDB
`downloader`	shaka.offline.DownloadManager
`config`	shaka.extern.PlayerConfiguration
`storage`	shaka.extern.StorageCell
`manifest`	shaka.extern.Manifest
`drmEngine`	shaka.media.DrmEngine

Source:

lib/offline/storage.js, line 448

Returns:

Type: Promise

ensureNotDestroyed_()

Throws an error if the object is destroyed.

Source:

lib/offline/storage.js, line 1435

filterManifest_(manifest, drmEnginenon-null, config) → {Promise}

Filter |manifest| such that it will only contain the variants and text streams that we want to store and can actually play.

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest
`drmEngine`	shaka.media.DrmEngine
`config`	shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 657

Returns:

Type: Promise

getConfiguration() → {shaka.extern.PlayerConfiguration}

Return a copy of the current configuration. Modifications of the returned value will not affect the Storage instance's active configuration. You must call storage.configure() to make changes.

Source:

lib/offline/storage.js, line 212

Returns:

Type: shaka.extern.PlayerConfiguration

getManifestIncludesInitData_(manifest) → {boolean}

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest

Source:

lib/offline/storage.js, line 868

Returns:

Type: boolean

getManifestIsEncrypted_(manifest) → {boolean}

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest

Source:

lib/offline/storage.js, line 855

Returns:

Type: boolean

getNetworkingEngine() → {shaka.net.NetworkingEngine}

Source:

lib/offline/storage.js, line 232

Returns:

Type: shaka.net.NetworkingEngine

list() → {Promise.<!Array.<shaka.extern.StoredContent>>}

Lists all the stored content available.

Source:

lib/offline/storage.js, line 1090

Returns:

A Promise to an array of structures representing all stored content. The "offlineUri" member of the structure is the URI that should be given to Player.load() to play this piece of content offline. The "appMetadata" member is the appMetadata argument you passed to store().

Type: Promise.<!Array.<shaka.extern.StoredContent>>

list_() → {Promise.<!Array.<shaka.extern.StoredContent>>}

See |shaka.offline.Storage.list| for details.

Source:

lib/offline/storage.js, line 1100

Returns:

Type: Promise.<!Array.<shaka.extern.StoredContent>>

makeManifestDB_(drmEnginenon-null, manifest, uri, metadatanon-null, config, downloadernon-null) → {{manifestDB: shaka.extern.ManifestDB, toDownload: !Array.<!shaka.offline.DownloadInfo>}}

Create a download manager and download the manifest. This also sets up download infos for each segment to be downloaded.

Parameters:

Name	Type	Description
`drmEngine`	shaka.media.DrmEngine
`manifest`	shaka.extern.Manifest
`uri`	string
`metadata`	Object
`config`	shaka.extern.PlayerConfiguration
`downloader`	shaka.offline.DownloadManager

Source:

lib/offline/storage.js, line 778

Returns:

Type: {manifestDB: shaka.extern.ManifestDB, toDownload: !Array.<!shaka.offline.DownloadInfo>}

parseManifest(uri, parser, config) → {Promise.<shaka.extern.Manifest>}

This method is public so that it can be overridden in testing.

Parameters:

Name	Type	Description
`uri`	string
`parser`	shaka.extern.ManifestParser
`config`	shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 1148

Returns:

Type: Promise.<shaka.extern.Manifest>

remove(contentUri) → {Promise}

Removes the given stored content. This will also attempt to release the licenses, if any.

Parameters:

Name	Type	Description
`contentUri`	string

Source:

lib/offline/storage.js, line 910

Returns:

Type: Promise

remove_(contentUri) → {Promise}

See |shaka.offline.Storage.remove| for details.

Parameters:

Name	Type	Description
`contentUri`	string

Source:

lib/offline/storage.js, line 921

Returns:

Type: Promise

removeEmeSessions() → {Promise.<boolean>}

Removes any EME sessions that were not successfully removed before. This returns whether all the sessions were successfully removed.

Source:

lib/offline/storage.js, line 1030

Returns:

Type: Promise.<boolean>

removeEmeSessions_() → {Promise.<boolean>}

Source:

lib/offline/storage.js, line 1038

Returns:

Type: Promise.<boolean>

removeFromDRM_(urinon-null, manifestDb, muxernon-null) → {Promise}

Parameters:

Name	Type	Description
`uri`	shaka.offline.OfflineUri
`manifestDb`	shaka.extern.ManifestDB
`muxer`	shaka.offline.StorageMuxer

Source:

lib/offline/storage.js, line 988

Returns:

Type: Promise

removeFromStorage_(storage, urinon-null, manifest) → {Promise}

Parameters:

Name	Type	Description
`storage`	shaka.extern.StorageCell
`uri`	shaka.offline.OfflineUri
`manifest`	shaka.extern.ManifestDB

Source:

lib/offline/storage.js, line 1001

Returns:

Type: Promise

requireSupport_()

Used by functions that need storage support to ensure that the current platform has storage support before continuing. This should only be needed to be used at the start of public methods.

Source:

lib/offline/storage.js, line 1451

setManifestDrmFields_(manifest, manifestDB, drmEnginenon-null, config)

Parameters:

Name	Type	Description
`manifest`	shaka.extern.Manifest
`manifestDB`	shaka.extern.ManifestDB
`drmEngine`	shaka.media.DrmEngine
`config`	shaka.extern.PlayerConfiguration

Source:

lib/offline/storage.js, line 886

startAbortableOperation_(actionnon-null) → {shaka.extern.IAbortableOperation.<T>}

The equivalent of startOperation_, but for abortable operations.

Parameters:

Name	Type	Description
`action`	shaka.extern.IAbortableOperation.<T>

Source:

lib/offline/storage.js, line 1490

Returns:

Type: shaka.extern.IAbortableOperation.<T>

startOperation_(actionnon-null) → {Promise.<T>}

Perform an action. Track the action's progress so that when we destroy we will wait until all the actions have completed before allowing destroy to resolve.

Parameters:

Name	Type	Description
`action`	Promise.<T>

Source:

lib/offline/storage.js, line 1470

Returns:

Type: Promise.<T>

store(uri, appMetadataopt, non-null, mimeTypeopt) → {shaka.extern.IAbortableOperation.<shaka.extern.StoredContent>}

Stores the given manifest. If the content is encrypted, and encrypted content cannot be stored on this platform, the Promise will be rejected with error code 6001, REQUESTED_KEY_SYSTEM_CONFIG_UNAVAILABLE. Multiple assets can be downloaded at the same time, but note that since the storage instance has a single networking engine, multiple storage objects will be necessary if some assets require unique network filters. This snapshots the storage config at the time of the call, so it will not honor any changes to config mid-store operation.

Parameters:

Name	Type	Attributes	Description
`uri`	string		The URI of the manifest to store.
`appMetadata`	Object	<optional>	An arbitrary object from the application that will be stored along-side the offline content. Use this for any application-specific metadata you need associated with the stored content. For details on the data types that can be stored here, please refer to https://bit.ly/StructClone
`mimeType`	string	<optional>	The mime type for the content \|manifestUri\| points to.

Source:

lib/offline/storage.js, line 263

Returns:

An AbortableOperation that resolves with a structure representing what was stored. The "offlineUri" member is the URI that should be given to Player.load() to play this piece of content offline. The "appMetadata" member is the appMetadata argument you passed to store(). If you want to cancel this download, call the "abort" method on AbortableOperation.

Type: shaka.extern.IAbortableOperation.<shaka.extern.StoredContent>

store_(uri, appMetadatanon-null, getParser, config, downloadernon-null) → {Promise.<shaka.extern.StoredContent>}

See |shaka.offline.Storage.store| for details.

Parameters:

Name	Type	Description
`uri`	string
`appMetadata`	Object
`getParser`	function(): !Promise.<shaka.extern.ManifestParser>
`config`	shaka.extern.PlayerConfiguration
`downloader`	shaka.offline.DownloadManager

Source:

lib/offline/storage.js, line 315

Returns:

Type: Promise.<shaka.extern.StoredContent>