InitializationChunk

Artifact: androidx.media3:media3-exoplayer

Kotlin |Java

@UnstableApi
public final class InitializationChunk extends Chunk

java.lang.Object
↳	androidx.media3.exoplayer.source.chunk.Chunk
	↳	androidx.media3.exoplayer.source.chunk.InitializationChunk

A Chunk that uses an Extractor to decode initialization data for single track.

Summary

Public fields
`@Nullable ChunkIndex`	`chunkIndex`

Public constructors
`InitializationChunk( DataSource dataSource, DataSpec dataSpec, Format trackFormat, @C.SelectionReason int trackSelectionReason, @Nullable Object trackSelectionData, ChunkExtractor chunkExtractor )`

Public methods
`void`	`cancelLoad()` Cancels the load.
`@Nullable ChunkIndex`	`getChunkIndex()` Returns the `ChunkIndex` obtained from the initialization chunk, or null if a `ChunkIndex` has not been obtained.
`void`	`init(ChunkExtractor.TrackOutputProvider trackOutputProvider)` Initializes the chunk for loading, setting a `TrackOutputProvider` for track outputs to which formats will be written as they are loaded.
`void`	`load()` Performs the load, returning on completion or cancellation.

Inherited fields

From androidx.media3.exoplayer.source.chunk.Chunk

`final StatsDataSource`	`dataSource`
`final DataSpec`	`dataSpec` The `DataSpec` that defines the data to be loaded.
`final long`	`endTimeUs` The end time of the media contained by the chunk, or `TIME_UNSET` if the data being loaded does not contain media samples.
`final long`	`loadTaskId` Identifies the load task for this loadable.
`final long`	`startTimeUs` The start time of the media contained by the chunk, or `TIME_UNSET` if the data being loaded does not contain media samples.
`final Format`	`trackFormat` The format of the track to which this chunk belongs.
`final @Nullable Object`	`trackSelectionData` Optional data associated with the selection of the track to which this chunk belongs.
`final int`	`@C.SelectionReason trackSelectionReason` One of the `selection reasons` if the chunk belongs to a track.
`final int`	`@C.DataType type` The `data type` of the chunk.

Inherited methods

From androidx.media3.exoplayer.source.chunk.Chunk

`final long`	`bytesLoaded()` Returns the number of bytes that have been loaded.
`final long`	`getDurationUs()` Returns the duration of the chunk in microseconds.
`final Map<String, List<String>>`	`getResponseHeaders()` Returns the response headers associated with the last `open` call.
`final Uri`	`getUri()` Returns the `Uri` associated with the last `open` call.

Public fields

chunkIndex

public @Nullable ChunkIndex chunkIndex

Public constructors

InitializationChunk

public InitializationChunk(
    DataSource dataSource,
    DataSpec dataSpec,
    Format trackFormat,
    @C.SelectionReason int trackSelectionReason,
    @Nullable Object trackSelectionData,
    ChunkExtractor chunkExtractor
)

Parameters
`DataSource dataSource`	The source from which the data should be loaded.
`DataSpec dataSpec`	Defines the data to be loaded.
`Format trackFormat`	See `trackFormat`.
`@C.SelectionReason int trackSelectionReason`	See `trackSelectionReason`.
`@Nullable Object trackSelectionData`	See `trackSelectionData`.
`ChunkExtractor chunkExtractor`	A wrapped extractor to use for parsing the initialization data.

Public methods

cancelLoad

public void cancelLoad()

Cancels the load.

Loadable implementations should ensure that a currently executing load call will exit reasonably quickly after this method is called. The load call may exit either by returning or by throwing an IOException.

If there is a currently executing load call, then the thread on which that call is being made will be interrupted immediately after the call to this method. Hence implementations do not need to (and should not attempt to) interrupt the loading thread themselves.

Although the loading thread will be interrupted, Loadable implementations should not use the interrupted status of the loading thread in load to determine whether the load has been canceled. This approach is not robust [Internal ref: b/79223737]. Instead, implementations should use their own flag to signal cancelation (for example, using AtomicBoolean).

getChunkIndex

public @Nullable ChunkIndex getChunkIndex()

Returns the ChunkIndex obtained from the initialization chunk, or null if a ChunkIndex has not been obtained.

init

public void init(ChunkExtractor.TrackOutputProvider trackOutputProvider)

Initializes the chunk for loading, setting a TrackOutputProvider for track outputs to which formats will be written as they are loaded.

Parameters
`ChunkExtractor.TrackOutputProvider trackOutputProvider`	The `TrackOutputProvider` for track outputs to which formats will be written as they are loaded.

load

public void load()

Performs the load, returning on completion or cancellation.

Throws
`java.io.IOException`	If the input could not be loaded.