java.lang.Object
- com.google.android.exoplayer2.source.BaseMediaSource
- - com.google.android.exoplayer2.source.CompositeMediaSource<Integer>
  - - com.google.android.exoplayer2.source.MergingMediaSource

All Implemented Interfaces:

MediaSource
```
public final class MergingMediaSource
extends CompositeMediaSource<Integer>
```
Merges multiple MediaSources.
The Timelines of the sources being merged must have the same number of periods.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class MergingMediaSource.IllegalMergeException
Thrown when a MergingMediaSource cannot merge its sources.
- Nested classes/interfaces inherited from interface com.google.android.exoplayer2.source.MediaSource
  MediaSource.Factory, MediaSource.MediaPeriodId, MediaSource.MediaSourceCaller

Constructor Summary

Constructors
Constructor	Description
`MergingMediaSource(boolean adjustPeriodTimeOffsets, boolean clipDurations, CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, MediaSource... mediaSources)`	Creates a merging media source.
`MergingMediaSource(boolean adjustPeriodTimeOffsets, boolean clipDurations, MediaSource... mediaSources)`	Creates a merging media source.
`MergingMediaSource(boolean adjustPeriodTimeOffsets, MediaSource... mediaSources)`	Creates a merging media source.
`MergingMediaSource(MediaSource... mediaSources)`	Creates a merging media source.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`MediaPeriod`	`createPeriod(MediaSource.MediaPeriodId id, Allocator allocator, long startPositionUs)`	Returns a new `MediaPeriod` identified by `periodId`.
`MediaItem`	`getMediaItem()`	Returns the `MediaItem` whose media is provided by the source.
`protected MediaSource.MediaPeriodId`	`getMediaPeriodIdForChildMediaPeriodId(Integer id, MediaSource.MediaPeriodId mediaPeriodId)`	Returns the `MediaSource.MediaPeriodId` in the composite source corresponding to the specified `MediaSource.MediaPeriodId` in a child source.
`void`	`maybeThrowSourceInfoRefreshError()`	Throws any pending error encountered while loading or refreshing source information.
`protected void`	`onChildSourceInfoRefreshed(Integer id, MediaSource mediaSource, Timeline timeline)`	Called when the source info of a child source has been refreshed.
`protected void`	`prepareSourceInternal(TransferListener mediaTransferListener)`	Starts source preparation and enables the source, see `BaseMediaSource.prepareSource(MediaSourceCaller, TransferListener, PlayerId)`.
`void`	`releasePeriod(MediaPeriod mediaPeriod)`	Releases the period.
`protected void`	`releaseSourceInternal()`	Releases the source, see `BaseMediaSource.releaseSource(MediaSourceCaller)`.

Methods inherited from class com.google.android.exoplayer2.source.CompositeMediaSource
disableChildSource, disableInternal, enableChildSource, enableInternal, getMediaTimeForChildMediaTime, getWindowIndexForChildWindowIndex, prepareChildSource, releaseChildSource

Methods inherited from class com.google.android.exoplayer2.source.BaseMediaSource
addDrmEventListener, addEventListener, createDrmEventDispatcher, createDrmEventDispatcher, createEventDispatcher, createEventDispatcher, createEventDispatcher, disable, enable, getPlayerId, isEnabled, prepareSource, refreshSourceInfo, releaseSource, removeDrmEventListener, removeEventListener

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.android.exoplayer2.source.MediaSource
getInitialTimeline, isSingleWindow, prepareSource

- Constructor Detail
  - MergingMediaSource
```
public MergingMediaSource(MediaSource... mediaSources)
```
    Creates a merging media source.
    Neither offsets between the timestamps in the media sources nor the durations of the media sources will be adjusted.
    
    Parameters:
    
    mediaSources - The MediaSources to merge.
  - MergingMediaSource
```
public MergingMediaSource(boolean adjustPeriodTimeOffsets,
                          MediaSource... mediaSources)
```
    Creates a merging media source.
    Durations of the media sources will not be adjusted.
    
    Parameters:
    
    adjustPeriodTimeOffsets - Whether to adjust timestamps of the merged media sources to all start at the same time.
    
    mediaSources - The MediaSources to merge.
  - MergingMediaSource
```
public MergingMediaSource(boolean adjustPeriodTimeOffsets,
                          boolean clipDurations,
                          MediaSource... mediaSources)
```
    Creates a merging media source.
    
    Parameters:
    
    adjustPeriodTimeOffsets - Whether to adjust timestamps of the merged media sources to all start at the same time.
    
    clipDurations - Whether to clip the durations of the media sources to match the shortest duration.
    
    mediaSources - The MediaSources to merge.
  - MergingMediaSource
```
public MergingMediaSource(boolean adjustPeriodTimeOffsets,
                          boolean clipDurations,
                          CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory,
                          MediaSource... mediaSources)
```
    Creates a merging media source.
    
    Parameters:
    
    adjustPeriodTimeOffsets - Whether to adjust timestamps of the merged media sources to all start at the same time.
    
    clipDurations - Whether to clip the durations of the media sources to match the shortest duration.
    
    compositeSequenceableLoaderFactory - A factory to create composite SequenceableLoaders for when this media source loads data from multiple streams (video, audio etc...).
    
    mediaSources - The MediaSources to merge.
- Method Detail
  - getMediaItem
```
public MediaItem getMediaItem()
```
    Description copied from interface: MediaSource
    
    Returns the MediaItem whose media is provided by the source.
  - prepareSourceInternal
```
protected void prepareSourceInternal(@Nullable
                                     TransferListener mediaTransferListener)
```
    Description copied from class: BaseMediaSource
    
    Starts source preparation and enables the source, see BaseMediaSource.prepareSource(MediaSourceCaller, TransferListener, PlayerId). This method is called at most once until the next call to BaseMediaSource.releaseSourceInternal().
    
    Overrides:
    
    prepareSourceInternal in class CompositeMediaSource<Integer>
    
    Parameters:
    
    mediaTransferListener - The transfer listener which should be informed of any media data transfers. May be null if no listener is available. Note that this listener should usually be only informed of transfers related to the media loads and not of auxiliary loads for manifests and other data.
  - maybeThrowSourceInfoRefreshError
```
public void maybeThrowSourceInfoRefreshError()
                                      throws IOException
```
    Description copied from interface: MediaSource
    
    Throws any pending error encountered while loading or refreshing source information.
    Should not be called directly from application code.
    Must only be called after MediaSource.prepareSource(MediaSourceCaller, TransferListener, PlayerId).
    
    Specified by:
    
    maybeThrowSourceInfoRefreshError in interface MediaSource
    
    Overrides:
    
    maybeThrowSourceInfoRefreshError in class CompositeMediaSource<Integer>
    
    Throws:
    
    IOException
  - createPeriod
```
public MediaPeriod createPeriod(MediaSource.MediaPeriodId id,
                                Allocator allocator,
                                long startPositionUs)
```
    Description copied from interface: MediaSource
    
    Returns a new MediaPeriod identified by periodId.
    Should not be called directly from application code.
    Must only be called if the source is enabled.
    
    Parameters:
    
    id - The identifier of the period.
    
    allocator - An Allocator from which to obtain media buffer allocations.
    
    startPositionUs - The expected start position, in microseconds.
    
    Returns:
    
    A new MediaPeriod.
  - releasePeriod
```
public void releasePeriod(MediaPeriod mediaPeriod)
```
    Description copied from interface: MediaSource
    
    Releases the period.
    Should not be called directly from application code.
    
    Parameters:
    
    mediaPeriod - The period to release.
  - releaseSourceInternal
```
protected void releaseSourceInternal()
```
    Description copied from class: BaseMediaSource
    
    Releases the source, see BaseMediaSource.releaseSource(MediaSourceCaller). This method is called exactly once after each call to BaseMediaSource.prepareSourceInternal(TransferListener).
    
    Overrides:
    
    releaseSourceInternal in class CompositeMediaSource<Integer>
  - onChildSourceInfoRefreshed
```
protected void onChildSourceInfoRefreshed(Integer id,
                                          MediaSource mediaSource,
                                          Timeline timeline)
```
    Description copied from class: CompositeMediaSource
    
    Called when the source info of a child source has been refreshed.
    
    Specified by:
    
    onChildSourceInfoRefreshed in class CompositeMediaSource<Integer>
    
    Parameters:
    
    id - The unique id used to prepare the child source.
    
    mediaSource - The child source whose source info has been refreshed.
    
    timeline - The timeline of the child source.
  - getMediaPeriodIdForChildMediaPeriodId
```
@Nullable
protected MediaSource.MediaPeriodId getMediaPeriodIdForChildMediaPeriodId(Integer id,
                                                                          MediaSource.MediaPeriodId mediaPeriodId)
```
    Description copied from class: CompositeMediaSource
    
    Returns the MediaSource.MediaPeriodId in the composite source corresponding to the specified MediaSource.MediaPeriodId in a child source. The default implementation does not change the media period id.
    
    Overrides:
    
    getMediaPeriodIdForChildMediaPeriodId in class CompositeMediaSource<Integer>
    
    Parameters:
    
    id - The unique id used to prepare the child source.
    
    mediaPeriodId - A MediaSource.MediaPeriodId of the child source.
    
    Returns:
    
    The corresponding MediaSource.MediaPeriodId in the composite source. Null if no corresponding media period id can be determined.

Class MergingMediaSource

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.android.exoplayer2.source.MediaSource

Constructor Summary

Method Summary

Methods inherited from class com.google.android.exoplayer2.source.CompositeMediaSource

Methods inherited from class com.google.android.exoplayer2.source.BaseMediaSource

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.android.exoplayer2.source.MediaSource

Constructor Detail

MergingMediaSource

MergingMediaSource

MergingMediaSource

MergingMediaSource

Method Detail

getMediaItem

prepareSourceInternal

maybeThrowSourceInfoRefreshError

createPeriod

releasePeriod

releaseSourceInternal

onChildSourceInfoRefreshed

getMediaPeriodIdForChildMediaPeriodId