Class: shaka.util.ContentDatabaseReader

Constructor

new ContentDatabaseReader()

Creates a new ContentDatabaseReader.
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Members

(private, non-null) listeners_ :shaka.util.MultiMap.<shaka.util.FakeEventTarget.ListenerType>

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(private) mode_ :string

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  • string
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(protected) parent :shaka.util.FakeEventTarget

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Methods

addEventListener(type, listener, opt_capturingopt)

Add an event listener to this object.
Parameters:
Name Type Attributes Description
type string The event type to listen for.
listener shaka.util.FakeEventTarget.ListenerType The callback or listener object to invoke.
opt_capturing boolean <optional>
 True to listen during the capturing phase, false to listen during the bubbling phase. Note that FakeEventTarget does not support the capturing phase from the standard event model.
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closeDatabaseConnection()

Closes the connection to the database.
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(private) createStore_(name, options) → (non-null) {IDBObjectStore}

Creates an object store in the database. It will replace any previous object store with the same name in this database.
Parameters:
Name Type Description
name string The unique name of the object store.
options Object The options for this object store including keyPath and autoIncrement, other options will be ignored.
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Type
IDBObjectStore

deleteDatabase() → (non-null) {Promise}

Closes the connection to the database if required and then deletes the database. The database can only be deleted if there are no other connections to the database.
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Promise

dispatchEvent(eventnon-null) → {boolean}

Dispatch an event from this object.
Parameters:
Name Type Description
event Event The event to be dispatched from this object.
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Returns:
True if the default action was prevented.
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boolean

(protected) getContentStore() → (non-null) {IDBObjectStore}

Opens a reference to the content store.
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Returns:
A reference to the content store.
Type
IDBObjectStore

(protected) getGroupStore() → (non-null) {IDBObjectStore}

Opens a reference to the group store.
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Returns:
A reference to the group store.
Type
IDBObjectStore

(protected) getIndexStore() → (non-null) {IDBObjectStore}

Opens a reference to the index store.
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Returns:
A reference to the index store.
Type
IDBObjectStore

(private) getStore_(storeName) → (non-null) {IDBObjectStore}

Opens a reference to a store.
Parameters:
Name Type Description
storeName string The name of a store in the database.
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Returns:
A reference to a store.
Type
IDBObjectStore

(private) recursiveDispatch_(eventnon-null) → {boolean}

Dispatches an event recursively without changing its original target.
Parameters:
Name Type Description
event Event
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Returns:
True if the default action was prevented.
Type
boolean

removeEventListener(type, listener, opt_capturingopt)

Remove an event listener from this object.
Parameters:
Name Type Attributes Description
type string The event type for which you wish to remove a listener.
listener shaka.util.FakeEventTarget.ListenerType The callback or listener object to remove.
opt_capturing boolean <optional>
 True to remove a listener for the capturing phase, false to remove a listener for the bubbling phase. Note that FakeEventTarget does not support the capturing phase from the standard event model.
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retrieveGroup(groupId) → (non-null) {Promise.<shaka.util.ContentDatabase.GroupInformation>}

Retrieves the group for a stream from the database.
Parameters:
Name Type Description
groupId number The unique id of the group.
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Returns:
The unique ids of the streams the group.
Type
Promise.<shaka.util.ContentDatabase.GroupInformation>

retrieveGroupIds() → (non-null) {Promise.<!Array.<number>>}

Retrieves an array of all stored group IDs.
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Returns:
The unique IDs of all of the stored groups.
Type
Promise.<!Array.<number>>

(protected) retrieveItem(store, id) → (non-null) {Promise}

Retrieves an item from a store in the database.
Parameters:
Name Type Description
store IDBObjectStore | IDBIndex The store to request an item from.
id number | Array The unique id(s) of item in the store.
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Promise

retrieveSegment(streamId, segmentId) → (non-null) {Promise.<ArrayBuffer>}

Retrieves the segment with |segmentId| from the stream with |streamId| in the database.
Parameters:
Name Type Description
streamId number The unique id of the stream to retrieve.
segmentId number The id of the segment to retrieve.
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Returns:
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Promise.<ArrayBuffer>

retrieveStreamIndex(streamId) → (non-null) {Promise.<shaka.util.ContentDatabase.StreamIndex>}

Retrieves the index for a stream from the database.
Parameters:
Name Type Description
streamId number The unique id of the stream.
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Returns:
Type
Promise.<shaka.util.ContentDatabase.StreamIndex>

setUpDatabase() → (non-null) {Promise}

Opens a connection to the database and sets up the database if required. If a new version number is given the onupgradeneeded event will be fired. Must be run before any operations can be performed on the database. The database will have the structure: Group Store: { group_id: number stream_ids: Array. session_ids: Array. } Index Store: { stream_id: number, mime_type: string, references: [{shaka.util.ContentDatabase.SegmentInformation}] } Content Store: { stream_id: number, segment_id: number, content: ArrayBuffer }
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Promise