java.lang.Object
- com.google.android.exoplayer2.source.BaseMediaSource
- - com.google.android.exoplayer2.source.CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
  - - com.google.android.exoplayer2.source.ConcatenatingMediaSource

All Implemented Interfaces:

MediaSource
```
public final class ConcatenatingMediaSource
extends CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
```
Concatenates multiple MediaSources. The list of MediaSources can be modified during playback. It is valid for the same MediaSource instance to be present more than once in the concatenation. Access to this class is thread-safe.

Nested Class Summary
- Nested classes/interfaces inherited from interface com.google.android.exoplayer2.source.MediaSource
  MediaSource.MediaPeriodId, MediaSource.MediaSourceCaller

Constructor Summary

Constructors
Constructor	Description
`ConcatenatingMediaSource(boolean isAtomic, boolean useLazyPreparation, ShuffleOrder shuffleOrder, MediaSource... mediaSources)`
`ConcatenatingMediaSource(boolean isAtomic, MediaSource... mediaSources)`
`ConcatenatingMediaSource(boolean isAtomic, ShuffleOrder shuffleOrder, MediaSource... mediaSources)`
`ConcatenatingMediaSource(MediaSource... mediaSources)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addMediaSource(int index, MediaSource mediaSource)`	Adds a `MediaSource` to the playlist.
`void`	`addMediaSource(int index, MediaSource mediaSource, Handler handler, Runnable onCompletionAction)`	Adds a `MediaSource` to the playlist and executes a custom action on completion.
`void`	`addMediaSource(MediaSource mediaSource)`	Appends a `MediaSource` to the playlist.
`void`	`addMediaSource(MediaSource mediaSource, Handler handler, Runnable onCompletionAction)`	Appends a `MediaSource` to the playlist and executes a custom action on completion.
`void`	`addMediaSources(int index, Collection<MediaSource> mediaSources)`	Adds multiple `MediaSource`s to the playlist.
`void`	`addMediaSources(int index, Collection<MediaSource> mediaSources, Handler handler, Runnable onCompletionAction)`	Adds multiple `MediaSource`s to the playlist and executes a custom action on completion.
`void`	`addMediaSources(Collection<MediaSource> mediaSources)`	Appends multiple `MediaSource`s to the playlist.
`void`	`addMediaSources(Collection<MediaSource> mediaSources, Handler handler, Runnable onCompletionAction)`	Appends multiple `MediaSource`s to the playlist and executes a custom action on completion.
`void`	`clear()`	Clears the playlist.
`void`	`clear(Handler handler, Runnable onCompletionAction)`	Clears the playlist and executes a custom action on completion.
`MediaPeriod`	`createPeriod(MediaSource.MediaPeriodId id, Allocator allocator, long startPositionUs)`	Returns a new `MediaPeriod` identified by `periodId`.
`protected void`	`disableInternal()`	Disables the source, see `BaseMediaSource.disable(MediaSourceCaller)`.
`protected void`	`enableInternal()`	Enables the source, see `BaseMediaSource.enable(MediaSourceCaller)`.
`Timeline`	`getInitialTimeline()`	Returns the initial placeholder timeline that is returned immediately when the real timeline is not yet known, or null to let the player create an initial timeline.
`MediaItem`	`getMediaItem()`	Returns the `MediaItem` whose media is provided by the source.
`protected MediaSource.MediaPeriodId`	`getMediaPeriodIdForChildMediaPeriodId(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder, MediaSource.MediaPeriodId mediaPeriodId)`	Returns the `MediaSource.MediaPeriodId` in the composite source corresponding to the specified `MediaSource.MediaPeriodId` in a child source.
`MediaSource`	`getMediaSource(int index)`	Returns the `MediaSource` at a specified index.
`int`	`getSize()`	Returns the number of media sources in the playlist.
`protected int`	`getWindowIndexForChildWindowIndex(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder, int windowIndex)`	Returns the window index in the composite source corresponding to the specified window index in a child source.
`boolean`	`isSingleWindow()`	Returns true if the media source is guaranteed to never have zero or more than one window.
`void`	`moveMediaSource(int currentIndex, int newIndex)`	Moves an existing `MediaSource` within the playlist.
`void`	`moveMediaSource(int currentIndex, int newIndex, Handler handler, Runnable onCompletionAction)`	Moves an existing `MediaSource` within the playlist and executes a custom action on completion.
`protected void`	`onChildSourceInfoRefreshed(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder, 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)`.
`void`	`releasePeriod(MediaPeriod mediaPeriod)`	Releases the period.
`protected void`	`releaseSourceInternal()`	Releases the source, see `BaseMediaSource.releaseSource(MediaSourceCaller)`.
`MediaSource`	`removeMediaSource(int index)`	Removes a `MediaSource` from the playlist.
`MediaSource`	`removeMediaSource(int index, Handler handler, Runnable onCompletionAction)`	Removes a `MediaSource` from the playlist and executes a custom action on completion.
`void`	`removeMediaSourceRange(int fromIndex, int toIndex)`	Removes a range of `MediaSource`s from the playlist, by specifying an initial index (included) and a final index (excluded).
`void`	`removeMediaSourceRange(int fromIndex, int toIndex, Handler handler, Runnable onCompletionAction)`	Removes a range of `MediaSource`s from the playlist, by specifying an initial index (included) and a final index (excluded), and executes a custom action on completion.
`void`	`setShuffleOrder(ShuffleOrder shuffleOrder)`	Sets a new shuffle order to use when shuffling the child media sources.
`void`	`setShuffleOrder(ShuffleOrder shuffleOrder, Handler handler, Runnable onCompletionAction)`	Sets a new shuffle order to use when shuffling the child media sources.

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

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

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

- Constructor Detail
  - ConcatenatingMediaSource
```
public ConcatenatingMediaSource(MediaSource... mediaSources)
```
    Parameters:
    
    mediaSources - The MediaSources to concatenate. It is valid for the same MediaSource instance to be present more than once in the array.
  - ConcatenatingMediaSource
```
public ConcatenatingMediaSource(boolean isAtomic,
                                MediaSource... mediaSources)
```
    Parameters:
    
    isAtomic - Whether the concatenating media source will be treated as atomic, i.e., treated as a single item for repeating and shuffling.
    
    mediaSources - The MediaSources to concatenate. It is valid for the same MediaSource instance to be present more than once in the array.
  - ConcatenatingMediaSource
```
public ConcatenatingMediaSource(boolean isAtomic,
                                ShuffleOrder shuffleOrder,
                                MediaSource... mediaSources)
```
    Parameters:
    
    isAtomic - Whether the concatenating media source will be treated as atomic, i.e., treated as a single item for repeating and shuffling.
    
    shuffleOrder - The ShuffleOrder to use when shuffling the child media sources.
    
    mediaSources - The MediaSources to concatenate. It is valid for the same MediaSource instance to be present more than once in the array.
  - ConcatenatingMediaSource
```
public ConcatenatingMediaSource(boolean isAtomic,
                                boolean useLazyPreparation,
                                ShuffleOrder shuffleOrder,
                                MediaSource... mediaSources)
```
    Parameters:
    
    isAtomic - Whether the concatenating media source will be treated as atomic, i.e., treated as a single item for repeating and shuffling.
    
    useLazyPreparation - Whether playlist items are prepared lazily. If false, all manifest loads and other initial preparation steps happen immediately. If true, these initial preparations are triggered only when the player starts buffering the media.
    
    shuffleOrder - The ShuffleOrder to use when shuffling the child media sources.
    
    mediaSources - The MediaSources to concatenate. It is valid for the same MediaSource instance to be present more than once in the array.
- Method Detail
  - getInitialTimeline
```
public Timeline getInitialTimeline()
```
    Description copied from interface: MediaSource
    
    Returns the initial placeholder timeline that is returned immediately when the real timeline is not yet known, or null to let the player create an initial timeline.
    The initial timeline must use the same uids for windows and periods that the real timeline will use. It also must provide windows which are marked as dynamic to indicate that the window is expected to change when the real timeline arrives.
    Any media source which has multiple windows should typically provide such an initial timeline to make sure the player reports the correct number of windows immediately.
  - isSingleWindow
```
public boolean isSingleWindow()
```
    Description copied from interface: MediaSource
    
    Returns true if the media source is guaranteed to never have zero or more than one window.
    The default implementation returns true.
    
    Returns:
    
    true if the source has exactly one window.
  - addMediaSource
```
public void addMediaSource(MediaSource mediaSource)
```
    Appends a MediaSource to the playlist.
    
    Parameters:
    
    mediaSource - The MediaSource to be added to the list.
  - addMediaSource
```
public void addMediaSource(MediaSource mediaSource,
                           Handler handler,
                           Runnable onCompletionAction)
```
    Appends a MediaSource to the playlist and executes a custom action on completion.
    
    Parameters:
    
    mediaSource - The MediaSource to be added to the list.
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media source has been added to the playlist.
  - addMediaSource
```
public void addMediaSource(int index,
                           MediaSource mediaSource)
```
    Adds a MediaSource to the playlist.
    
    Parameters:
    
    index - The index at which the new MediaSource will be inserted. This index must be in the range of 0 <= index <= getSize().
    
    mediaSource - The MediaSource to be added to the list.
  - addMediaSource
```
public void addMediaSource(int index,
                           MediaSource mediaSource,
                           Handler handler,
                           Runnable onCompletionAction)
```
    Adds a MediaSource to the playlist and executes a custom action on completion.
    
    Parameters:
    
    index - The index at which the new MediaSource will be inserted. This index must be in the range of 0 <= index <= getSize().
    
    mediaSource - The MediaSource to be added to the list.
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media source has been added to the playlist.
  - addMediaSources
```
public void addMediaSources(Collection<MediaSource> mediaSources)
```
    Appends multiple MediaSources to the playlist.
    
    Parameters:
    
    mediaSources - A collection of MediaSources to be added to the list. The media sources are added in the order in which they appear in this collection.
  - addMediaSources
```
public void addMediaSources(Collection<MediaSource> mediaSources,
                            Handler handler,
                            Runnable onCompletionAction)
```
    Appends multiple MediaSources to the playlist and executes a custom action on completion.
    
    Parameters:
    
    mediaSources - A collection of MediaSources to be added to the list. The media sources are added in the order in which they appear in this collection.
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media sources have been added to the playlist.
  - addMediaSources
```
public void addMediaSources(int index,
                            Collection<MediaSource> mediaSources)
```
    Adds multiple MediaSources to the playlist.
    
    Parameters:
    
    index - The index at which the new MediaSources will be inserted. This index must be in the range of 0 <= index <= getSize().
    
    mediaSources - A collection of MediaSources to be added to the list. The media sources are added in the order in which they appear in this collection.
  - addMediaSources
```
public void addMediaSources(int index,
                            Collection<MediaSource> mediaSources,
                            Handler handler,
                            Runnable onCompletionAction)
```
    Adds multiple MediaSources to the playlist and executes a custom action on completion.
    
    Parameters:
    
    index - The index at which the new MediaSources will be inserted. This index must be in the range of 0 <= index <= getSize().
    
    mediaSources - A collection of MediaSources to be added to the list. The media sources are added in the order in which they appear in this collection.
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media sources have been added to the playlist.
  - removeMediaSource
```
public MediaSource removeMediaSource(int index)
```
    Removes a MediaSource from the playlist.
    Note: If you want to move the instance, it's preferable to use moveMediaSource(int, int) instead.
    Note: If you want to remove a set of contiguous sources, it's preferable to use removeMediaSourceRange(int, int) instead.
    
    Parameters:
    
    index - The index at which the media source will be removed. This index must be in the range of 0 <= index < getSize().
    
    Returns:
    
    The removed MediaSource.
  - removeMediaSource
```
public MediaSource removeMediaSource(int index,
                                     Handler handler,
                                     Runnable onCompletionAction)
```
    Removes a MediaSource from the playlist and executes a custom action on completion.
    Note: If you want to move the instance, it's preferable to use moveMediaSource(int, int, Handler, Runnable) instead.
    Note: If you want to remove a set of contiguous sources, it's preferable to use removeMediaSourceRange(int, int, Handler, Runnable) instead.
    
    Parameters:
    
    index - The index at which the media source will be removed. This index must be in the range of 0 <= index < getSize().
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media source has been removed from the playlist.
    
    Returns:
    
    The removed MediaSource.
  - removeMediaSourceRange
```
public void removeMediaSourceRange(int fromIndex,
                                   int toIndex)
```
    Removes a range of MediaSources from the playlist, by specifying an initial index (included) and a final index (excluded).
    Note: when specified range is empty, no actual media source is removed and no exception is thrown.
    
    Parameters:
    
    fromIndex - The initial range index, pointing to the first media source that will be removed. This index must be in the range of 0 <= index <= getSize().
    
    toIndex - The final range index, pointing to the first media source that will be left untouched. This index must be in the range of 0 <= index <= getSize().
    
    Throws:
    
    IndexOutOfBoundsException - When the range is malformed, i.e. fromIndex < 0, toIndex > getSize(), fromIndex > toIndex
  - removeMediaSourceRange
```
public void removeMediaSourceRange(int fromIndex,
                                   int toIndex,
                                   Handler handler,
                                   Runnable onCompletionAction)
```
    Removes a range of MediaSources from the playlist, by specifying an initial index (included) and a final index (excluded), and executes a custom action on completion.
    Note: when specified range is empty, no actual media source is removed and no exception is thrown.
    
    Parameters:
    
    fromIndex - The initial range index, pointing to the first media source that will be removed. This index must be in the range of 0 <= index <= getSize().
    
    toIndex - The final range index, pointing to the first media source that will be left untouched. This index must be in the range of 0 <= index <= getSize().
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media source range has been removed from the playlist.
    
    Throws:
    
    IllegalArgumentException - When the range is malformed, i.e. fromIndex < 0, toIndex > getSize(), fromIndex > toIndex
  - moveMediaSource
```
public void moveMediaSource(int currentIndex,
                            int newIndex)
```
    Moves an existing MediaSource within the playlist.
    
    Parameters:
    
    currentIndex - The current index of the media source in the playlist. This index must be in the range of 0 <= index < getSize().
    
    newIndex - The target index of the media source in the playlist. This index must be in the range of 0 <= index < getSize().
  - moveMediaSource
```
public void moveMediaSource(int currentIndex,
                            int newIndex,
                            Handler handler,
                            Runnable onCompletionAction)
```
    Moves an existing MediaSource within the playlist and executes a custom action on completion.
    
    Parameters:
    
    currentIndex - The current index of the media source in the playlist. This index must be in the range of 0 <= index < getSize().
    
    newIndex - The target index of the media source in the playlist. This index must be in the range of 0 <= index < getSize().
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the media source has been moved.
  - clear
```
public void clear()
```
    Clears the playlist.
  - clear
```
public void clear(Handler handler,
                  Runnable onCompletionAction)
```
    Clears the playlist and executes a custom action on completion.
    
    Parameters:
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the playlist has been cleared.
  - getSize
```
public int getSize()
```
    Returns the number of media sources in the playlist.
  - getMediaSource
```
public MediaSource getMediaSource(int index)
```
    Returns the MediaSource at a specified index.
    
    Parameters:
    
    index - An index in the range of 0 <= index <= getSize().
    
    Returns:
    
    The MediaSource at this index.
  - setShuffleOrder
```
public void setShuffleOrder(ShuffleOrder shuffleOrder)
```
    Sets a new shuffle order to use when shuffling the child media sources.
    
    Parameters:
    
    shuffleOrder - A ShuffleOrder.
  - setShuffleOrder
```
public void setShuffleOrder(ShuffleOrder shuffleOrder,
                            Handler handler,
                            Runnable onCompletionAction)
```
    Sets a new shuffle order to use when shuffling the child media sources.
    
    Parameters:
    
    shuffleOrder - A ShuffleOrder.
    
    handler - The Handler to run onCompletionAction.
    
    onCompletionAction - A Runnable which is executed immediately after the shuffle order has been changed.
  - 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). This method is called at most once until the next call to BaseMediaSource.releaseSourceInternal().
    
    Overrides:
    
    prepareSourceInternal in class CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
    
    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.
  - enableInternal
```
protected void enableInternal()
```
    Description copied from class: BaseMediaSource
    
    Enables the source, see BaseMediaSource.enable(MediaSourceCaller).
    
    Overrides:
    
    enableInternal in class CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
  - 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.
  - disableInternal
```
protected void disableInternal()
```
    Description copied from class: BaseMediaSource
    
    Disables the source, see BaseMediaSource.disable(MediaSourceCaller).
    
    Overrides:
    
    disableInternal in class CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
  - 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<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
  - onChildSourceInfoRefreshed
```
protected void onChildSourceInfoRefreshed(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder,
                                          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<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
    
    Parameters:
    
    mediaSourceHolder - 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(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder,
                                                                          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<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
    
    Parameters:
    
    mediaSourceHolder - 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.
  - getWindowIndexForChildWindowIndex
```
protected int getWindowIndexForChildWindowIndex(com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder mediaSourceHolder,
                                                int windowIndex)
```
    Description copied from class: CompositeMediaSource
    
    Returns the window index in the composite source corresponding to the specified window index in a child source. The default implementation does not change the window index.
    
    Overrides:
    
    getWindowIndexForChildWindowIndex in class CompositeMediaSource<com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder>
    
    Parameters:
    
    mediaSourceHolder - The unique id used to prepare the child source.
    
    windowIndex - A window index of the child source.
    
    Returns:
    
    The corresponding window index in the composite source.

Class ConcatenatingMediaSource

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

Constructor Detail

ConcatenatingMediaSource

ConcatenatingMediaSource

ConcatenatingMediaSource

ConcatenatingMediaSource

Method Detail

getInitialTimeline

isSingleWindow

addMediaSource

addMediaSource

addMediaSource

addMediaSource

addMediaSources

addMediaSources

addMediaSources

addMediaSources

removeMediaSource

removeMediaSource

removeMediaSourceRange

removeMediaSourceRange

moveMediaSource

moveMediaSource

clear

clear

getSize

getMediaSource

setShuffleOrder

setShuffleOrder

getMediaItem

prepareSourceInternal

enableInternal

createPeriod

releasePeriod

disableInternal

releaseSourceInternal

onChildSourceInfoRefreshed

getMediaPeriodIdForChildMediaPeriodId

getWindowIndexForChildWindowIndex