com.google.android.exoplayer2.source.dash

Class DefaultDashChunkSource

java.lang.Object

com.google.android.exoplayer2.source.dash.DefaultDashChunkSource

All Implemented Interfaces:

com.google.android.exoplayer2.source.chunk.ChunkSource, DashChunkSource

public class DefaultDashChunkSource
extends java.lang.Object
implements DashChunkSource

A default DashChunkSource implementation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultDashChunkSource.Factory
protected static class	DefaultDashChunkSource.RepresentationHolder Holds information about a snapshot of a single Representation.
protected static class	DefaultDashChunkSource.RepresentationSegmentIterator MediaChunkIterator wrapping a DefaultDashChunkSource.RepresentationHolder.

Field Summary

Fields

Modifier and Type	Field and Description
protected DefaultDashChunkSource.RepresentationHolder[]	representationHolders

Constructor Summary

Constructors

Constructor and Description

DefaultDashChunkSource(com.google.android.exoplayer2.upstream.LoaderErrorThrower manifestLoaderErrorThrower, DashManifest manifest, int periodIndex, int[] adaptationSetIndices, com.google.android.exoplayer2.trackselection.TrackSelection trackSelection, int trackType, com.google.android.exoplayer2.upstream.DataSource dataSource, long elapsedRealtimeOffsetMs, int maxSegmentsPerLoad, boolean enableEventMessageTrack, boolean enableCea608Track, PlayerEmsgHandler.PlayerTrackEmsgHandler playerTrackEmsgHandler)

Method Summary

Modifier and Type	Method and Description
long	getAdjustedSeekPositionUs(long positionUs, com.google.android.exoplayer2.SeekParameters seekParameters)
void	getNextChunk(long playbackPositionUs, long loadPositionUs, java.util.List<? extends com.google.android.exoplayer2.source.chunk.MediaChunk> queue, com.google.android.exoplayer2.source.chunk.ChunkHolder out)
int	getPreferredQueueSize(long playbackPositionUs, java.util.List<? extends com.google.android.exoplayer2.source.chunk.MediaChunk> queue)
void	maybeThrowError()
protected com.google.android.exoplayer2.source.chunk.Chunk	newInitializationChunk(DefaultDashChunkSource.RepresentationHolder representationHolder, com.google.android.exoplayer2.upstream.DataSource dataSource, com.google.android.exoplayer2.Format trackFormat, int trackSelectionReason, java.lang.Object trackSelectionData, RangedUri initializationUri, RangedUri indexUri)
protected com.google.android.exoplayer2.source.chunk.Chunk	newMediaChunk(DefaultDashChunkSource.RepresentationHolder representationHolder, com.google.android.exoplayer2.upstream.DataSource dataSource, int trackType, com.google.android.exoplayer2.Format trackFormat, int trackSelectionReason, java.lang.Object trackSelectionData, long firstSegmentNum, int maxSegmentCount, long seekTimeUs)
void	onChunkLoadCompleted(com.google.android.exoplayer2.source.chunk.Chunk chunk)
boolean	onChunkLoadError(com.google.android.exoplayer2.source.chunk.Chunk chunk, boolean cancelable, java.lang.Exception e, long blacklistDurationMs)
void	updateManifest(DashManifest newManifest, int newPeriodIndex) Updates the manifest.

Methods inherited from class java.lang.Object

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

Field Detail

representationHolders

protected final DefaultDashChunkSource.RepresentationHolder[] representationHolders

Constructor Detail

DefaultDashChunkSource

public DefaultDashChunkSource(com.google.android.exoplayer2.upstream.LoaderErrorThrower manifestLoaderErrorThrower,
                              DashManifest manifest,
                              int periodIndex,
                              int[] adaptationSetIndices,
                              com.google.android.exoplayer2.trackselection.TrackSelection trackSelection,
                              int trackType,
                              com.google.android.exoplayer2.upstream.DataSource dataSource,
                              long elapsedRealtimeOffsetMs,
                              int maxSegmentsPerLoad,
                              boolean enableEventMessageTrack,
                              boolean enableCea608Track,
                              @Nullable
                              PlayerEmsgHandler.PlayerTrackEmsgHandler playerTrackEmsgHandler)

Parameters:

manifestLoaderErrorThrower - Throws errors affecting loading of manifests.

manifest - The initial manifest.

periodIndex - The index of the period in the manifest.

adaptationSetIndices - The indices of the adaptation sets in the period.

trackSelection - The track selection.

trackType - The type of the tracks in the selection.

dataSource - A DataSource suitable for loading the media data.

elapsedRealtimeOffsetMs - If known, an estimate of the instantaneous difference between server-side unix time and SystemClock.elapsedRealtime() in milliseconds, specified as the server's unix time minus the local elapsed time. If unknown, set to 0.

maxSegmentsPerLoad - The maximum number of segments to combine into a single request. Note that segments will only be combined if their Uris are the same and if their data ranges are adjacent.

enableEventMessageTrack - Whether the chunks generated by the source may output an event message track.

enableCea608Track - Whether the chunks generated by the source may output a CEA-608 track.

playerTrackEmsgHandler - The PlayerEmsgHandler.PlayerTrackEmsgHandler instance to handle emsg messages targeting the player. Maybe null if this is not necessary.

Method Detail

getAdjustedSeekPositionUs

public long getAdjustedSeekPositionUs(long positionUs,
                                      com.google.android.exoplayer2.SeekParameters seekParameters)

Specified by:

getAdjustedSeekPositionUs in interface com.google.android.exoplayer2.source.chunk.ChunkSource

updateManifest

public void updateManifest(DashManifest newManifest,
                           int newPeriodIndex)

Description copied from interface: DashChunkSource

Updates the manifest.

Specified by:

updateManifest in interface DashChunkSource

Parameters:

newManifest - The new manifest.

maybeThrowError

public void maybeThrowError()
                     throws java.io.IOException

Specified by:

maybeThrowError in interface com.google.android.exoplayer2.source.chunk.ChunkSource

Throws:

java.io.IOException

getPreferredQueueSize

public int getPreferredQueueSize(long playbackPositionUs,
                                 java.util.List<? extends com.google.android.exoplayer2.source.chunk.MediaChunk> queue)

Specified by:

getPreferredQueueSize in interface com.google.android.exoplayer2.source.chunk.ChunkSource

getNextChunk

public void getNextChunk(long playbackPositionUs,
                         long loadPositionUs,
                         java.util.List<? extends com.google.android.exoplayer2.source.chunk.MediaChunk> queue,
                         com.google.android.exoplayer2.source.chunk.ChunkHolder out)

Specified by:

getNextChunk in interface com.google.android.exoplayer2.source.chunk.ChunkSource

onChunkLoadCompleted

public void onChunkLoadCompleted(com.google.android.exoplayer2.source.chunk.Chunk chunk)

Specified by:

onChunkLoadCompleted in interface com.google.android.exoplayer2.source.chunk.ChunkSource

onChunkLoadError

public boolean onChunkLoadError(com.google.android.exoplayer2.source.chunk.Chunk chunk,
                                boolean cancelable,
                                java.lang.Exception e,
                                long blacklistDurationMs)

Specified by:

onChunkLoadError in interface com.google.android.exoplayer2.source.chunk.ChunkSource

newInitializationChunk

protected com.google.android.exoplayer2.source.chunk.Chunk newInitializationChunk(DefaultDashChunkSource.RepresentationHolder representationHolder,
                                                                                  com.google.android.exoplayer2.upstream.DataSource dataSource,
                                                                                  com.google.android.exoplayer2.Format trackFormat,
                                                                                  int trackSelectionReason,
                                                                                  java.lang.Object trackSelectionData,
                                                                                  RangedUri initializationUri,
                                                                                  RangedUri indexUri)

newMediaChunk

protected com.google.android.exoplayer2.source.chunk.Chunk newMediaChunk(DefaultDashChunkSource.RepresentationHolder representationHolder,
                                                                         com.google.android.exoplayer2.upstream.DataSource dataSource,
                                                                         int trackType,
                                                                         com.google.android.exoplayer2.Format trackFormat,
                                                                         int trackSelectionReason,
                                                                         java.lang.Object trackSelectionData,
                                                                         long firstSegmentNum,
                                                                         int maxSegmentCount,
                                                                         long seekTimeUs)