@UnstableApi
public abstract class DataChunk extends Chunk


A base class for Chunk implementations where the data should be loaded into a byte[] before being consumed.

Summary

Public constructors

DataChunk(
    DataSource dataSource,
    DataSpec dataSpec,
    @C.DataType int type,
    Format trackFormat,
    @C.SelectionReason int trackSelectionReason,
    @Nullable Object trackSelectionData,
    @Nullable byte[] data
)

Public methods

final void

Cancels the load.

byte[]

Returns the array in which the data is held.

final void

Performs the load, returning on completion or cancellation.

Protected methods

abstract void
consume(byte[] data, int limit)

Called by load.

Inherited fields

From androidx.media3.exoplayer.source.chunk.Chunk
final StatsDataSource
final DataSpec

The DataSpec that defines the data to be loaded.

final long

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

Identifies the load task for this loadable.

final long

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

The format of the track to which this chunk belongs.

final @Nullable Object

Optional data associated with the selection of the track to which this chunk belongs.

final int

One of the selection reasons if the chunk belongs to a track.

final int

The data type of the chunk.

Inherited methods

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

Returns the number of bytes that have been loaded.

final long

Returns the duration of the chunk in microseconds.

final Map<StringList<String>>

Returns the response headers associated with the last open call.

final Uri

Returns the Uri associated with the last open call.

Public constructors

DataChunk

public DataChunk(
    DataSource dataSource,
    DataSpec dataSpec,
    @C.DataType int type,
    Format trackFormat,
    @C.SelectionReason int trackSelectionReason,
    @Nullable Object trackSelectionData,
    @Nullable byte[] data
)
Parameters
DataSource dataSource

The source from which the data should be loaded.

DataSpec dataSpec

Defines the data to be loaded.

@C.DataType int type

See type.

Format trackFormat

See trackFormat.

@C.SelectionReason int trackSelectionReason

See trackSelectionReason.

@Nullable Object trackSelectionData

See trackSelectionData.

@Nullable byte[] data

An optional recycled array that can be used as a holder for the data.

Public methods

cancelLoad

public final 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 ).

getDataHolder

public byte[] getDataHolder()

Returns the array in which the data is held.

This method should be used for recycling the holder only, and not for reading the data.

Returns
byte[]

The array in which the data is held.

load

public final void load()

Performs the load, returning on completion or cancellation.

Throws
java.io.IOException

If the input could not be loaded.

Protected methods

consume

protected abstract void consume(byte[] data, int limit)

Called by load. Implementations should override this method to consume the loaded data.

Parameters
byte[] data

An array containing the data.

int limit

The limit of the data.

Throws
java.io.IOException

If an error occurs consuming the loaded data.