com.google.android.exoplayer.chunk

Class InitializationChunk

java.lang.Object

com.google.android.exoplayer.chunk.Chunk

com.google.android.exoplayer.chunk.InitializationChunk

All Implemented Interfaces:

ChunkExtractorWrapper.SingleTrackOutput, TrackOutput, Loader.Loadable

public class InitializationChunk
extends Chunk
implements ChunkExtractorWrapper.SingleTrackOutput

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

Field Summary

Fields inherited from class com.google.android.exoplayer.chunk.Chunk

dataSource, dataSpec, format, NO_PARENT_ID, parentId, trigger, TRIGGER_ADAPTIVE, TRIGGER_CUSTOM_BASE, TRIGGER_INITIAL, TRIGGER_MANUAL, TRIGGER_TRICK_PLAY, TRIGGER_UNSPECIFIED, type, TYPE_CUSTOM_BASE, TYPE_DRM, TYPE_MANIFEST, TYPE_MEDIA, TYPE_MEDIA_INITIALIZATION, TYPE_UNSPECIFIED

Constructor Summary

Constructors

Constructor and Description
InitializationChunk(DataSource dataSource, DataSpec dataSpec, int trigger, Format format, ChunkExtractorWrapper extractorWrapper)
InitializationChunk(DataSource dataSource, DataSpec dataSpec, int trigger, Format format, ChunkExtractorWrapper extractorWrapper, int parentId) Constructor for a chunk of media samples.

Method Summary

Modifier and Type	Method and Description
long	bytesLoaded() Gets the number of bytes that have been loaded.
void	cancelLoad() Cancels the load.
void	drmInitData(DrmInitData drmInitData)
void	format(MediaFormat mediaFormat) Invoked when the MediaFormat of the track has been extracted from the stream.
DrmInitData	getDrmInitData() Returns a DrmInitData parsed from the chunk, or null.
MediaFormat	getFormat() Returns a MediaFormat parsed from the chunk, or null.
SeekMap	getSeekMap() Returns a SeekMap parsed from the chunk, or null.
boolean	hasDrmInitData() True if a DrmInitData was parsed from the chunk.
boolean	hasFormat() True if a MediaFormat was parsed from the chunk.
boolean	hasSeekMap() True if a SeekMap was parsed from the chunk.
boolean	isLoadCanceled() Whether the load has been canceled.
void	load() Performs the load, returning on completion or cancelation.
int	sampleData(ExtractorInput input, int length, boolean allowEndOfInput) Invoked to write sample data to the output.
void	sampleData(ParsableByteArray data, int length) Invoked to write sample data to the output.
void	sampleMetadata(long timeUs, int flags, int size, int offset, byte[] encryptionKey) Invoked when metadata associated with a sample has been extracted from the stream.
void	seekMap(SeekMap seekMap)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InitializationChunk

public InitializationChunk(DataSource dataSource,
                           DataSpec dataSpec,
                           int trigger,
                           Format format,
                           ChunkExtractorWrapper extractorWrapper)

InitializationChunk

public InitializationChunk(DataSource dataSource,
                           DataSpec dataSpec,
                           int trigger,
                           Format format,
                           ChunkExtractorWrapper extractorWrapper,
                           int parentId)

Constructor for a chunk of media samples.

Parameters:

dataSource - A DataSource for loading the initialization data.

dataSpec - Defines the initialization data to be loaded.

trigger - The reason for this chunk being selected.

format - The format of the stream to which this chunk belongs.

extractorWrapper - A wrapped extractor to use for parsing the initialization data.

parentId - Identifier for a parent from which this chunk originates.

Method Detail

bytesLoaded

public long bytesLoaded()

Description copied from class: Chunk

Gets the number of bytes that have been loaded.

Specified by:

bytesLoaded in class Chunk

Returns:

The number of bytes that have been loaded.

hasFormat

public boolean hasFormat()

True if a MediaFormat was parsed from the chunk. False otherwise.

Should be called after loading has completed.

getFormat

public MediaFormat getFormat()

Returns a MediaFormat parsed from the chunk, or null.

Should be called after loading has completed.

hasDrmInitData

public boolean hasDrmInitData()

True if a DrmInitData was parsed from the chunk. False otherwise.

Should be called after loading has completed.

getDrmInitData

public DrmInitData getDrmInitData()

Returns a DrmInitData parsed from the chunk, or null.

Should be called after loading has completed.

hasSeekMap

public boolean hasSeekMap()

True if a SeekMap was parsed from the chunk. False otherwise.

Should be called after loading has completed.

getSeekMap

public SeekMap getSeekMap()

Returns a SeekMap parsed from the chunk, or null.

Should be called after loading has completed.

seekMap

public void seekMap(SeekMap seekMap)

Specified by:

seekMap in interface ChunkExtractorWrapper.SingleTrackOutput

See Also:

ExtractorOutput.seekMap(SeekMap)

drmInitData

public void drmInitData(DrmInitData drmInitData)

Specified by:

drmInitData in interface ChunkExtractorWrapper.SingleTrackOutput

See Also:

ExtractorOutput.drmInitData(DrmInitData)

format

public void format(MediaFormat mediaFormat)

Description copied from interface: TrackOutput

Invoked when the MediaFormat of the track has been extracted from the stream.

Specified by:

format in interface TrackOutput

Parameters:

mediaFormat - The extracted MediaFormat.

sampleData

public int sampleData(ExtractorInput input,
                      int length,
                      boolean allowEndOfInput)
               throws IOException,
                      InterruptedException

Description copied from interface: TrackOutput

Invoked to write sample data to the output.

Specified by:

sampleData in interface TrackOutput

Parameters:

input - An ExtractorInput from which to read the sample data.

length - The maximum length to read from the input.

allowEndOfInput - True if encountering the end of the input having read no data is allowed, and should result in C.RESULT_END_OF_INPUT being returned. False if it should be considered an error, causing an EOFException to be thrown.

Returns:

The number of bytes appended.

Throws:

IOException - If an error occurred reading from the input.

InterruptedException - If the thread was interrupted.

sampleData

public void sampleData(ParsableByteArray data,
                       int length)

Description copied from interface: TrackOutput

Invoked to write sample data to the output.

Specified by:

sampleData in interface TrackOutput

Parameters:

data - A ParsableByteArray from which to read the sample data.

length - The number of bytes to read.

sampleMetadata

public void sampleMetadata(long timeUs,
                           int flags,
                           int size,
                           int offset,
                           byte[] encryptionKey)

Description copied from interface: TrackOutput

Invoked when metadata associated with a sample has been extracted from the stream.

The corresponding sample data will have already been passed to the output via calls to TrackOutput.sampleData(ExtractorInput, int, boolean) or TrackOutput.sampleData(ParsableByteArray, int).

Specified by:

sampleMetadata in interface TrackOutput

Parameters:

timeUs - The media timestamp associated with the sample, in microseconds.

flags - Flags associated with the sample. See SampleHolder.flags.

size - The size of the sample data, in bytes.

offset - The number of bytes that have been passed to TrackOutput.sampleData(ExtractorInput, int, boolean) or TrackOutput.sampleData(ParsableByteArray, int) since the last byte belonging to the sample whose metadata is being passed.

encryptionKey - The encryption key associated with the sample. May be null.

cancelLoad

public void cancelLoad()

Description copied from interface: Loader.Loadable

Cancels the load.

Specified by:

cancelLoad in interface Loader.Loadable

isLoadCanceled

public boolean isLoadCanceled()

Description copied from interface: Loader.Loadable

Whether the load has been canceled.

Specified by:

isLoadCanceled in interface Loader.Loadable

Returns:

True if the load has been canceled. False otherwise.

load

public void load()
          throws IOException,
                 InterruptedException

Description copied from interface: Loader.Loadable

Performs the load, returning on completion or cancelation.

Specified by:

load in interface Loader.Loadable

Throws:

IOException

InterruptedException