ClippingMediaSource

Artifact: androidx.media3:media3-exoplayer

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---

Kotlin |Java

@UnstableApi
class ClippingMediaSource : WrappingMediaSource

kotlin.Any
↳	androidx.media3.exoplayer.source.BaseMediaSource
	↳	androidx.media3.exoplayer.source.CompositeMediaSource
		↳	androidx.media3.exoplayer.source.WrappingMediaSource
			↳	androidx.media3.exoplayer.source.ClippingMediaSource

---

MediaSource that wraps a source and clips its timeline based on specified start/end positions. The wrapped source must consist of a single period.

Summary

Nested types
class ClippingMediaSource.IllegalClippingException : IOException Thrown when a ClippingMediaSource cannot clip its wrapped source.
@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = TYPE_USE) @IntDef(value = ) annotation ClippingMediaSource.IllegalClippingException.Reason The reason clipping failed.

Public constructors
ClippingMediaSource(mediaSource: MediaSource!, durationUs: Long) Creates a new clipping source that wraps the specified source and provides samples from the default position for the specified duration.
ClippingMediaSource(     mediaSource: MediaSource!,     startPositionUs: Long,     endPositionUs: Long ) Creates a new clipping source that wraps the specified source and provides samples between the specified start and end position.
ClippingMediaSource(     mediaSource: MediaSource!,     startPositionUs: Long,     endPositionUs: Long,     enableInitialDiscontinuity: Boolean,     allowDynamicClippingUpdates: Boolean,     relativeToDefaultPosition: Boolean ) Creates a new clipping source that wraps the specified source.

Public functions
Boolean	canUpdateMediaItem(mediaItem: MediaItem!) Returns whether the for this source can be updated with the provided item.
MediaPeriod!	createPeriod(     id: MediaSource.MediaPeriodId!,     allocator: Allocator!,     startPositionUs: Long ) Creates the requested MediaPeriod.
Unit	maybeThrowSourceInfoRefreshError() Throws any pending error encountered while loading or refreshing source information.
Unit	releasePeriod(mediaPeriod: MediaPeriod!) Releases a MediaPeriod.

Protected functions
Unit	onChildSourceInfoRefreshed(newTimeline: Timeline!) Called when the child source info has been refreshed.
Unit	releaseSourceInternal() Releases the source, see releaseSource.

Inherited functions
From androidx.media3.exoplayer.source.BaseMediaSource Unit @UnstableApi addDrmEventListener(     handler: Handler!,     eventListener: DrmSessionEventListener! ) Adds a DrmSessionEventListener to the list of listeners which are notified of DRM events for this media source. Unit @UnstableApi addEventListener(     handler: Handler!,     eventListener: MediaSourceEventListener! ) Adds a MediaSourceEventListener to the list of listeners which are notified of media source events. DrmSessionEventListener.EventDispatcher! createDrmEventDispatcher(mediaPeriodId: MediaSource.MediaPeriodId?) Returns a DrmSessionEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified MediaPeriodId DrmSessionEventListener.EventDispatcher! createDrmEventDispatcher(     windowIndex: Int,     mediaPeriodId: MediaSource.MediaPeriodId? ) Returns a DrmSessionEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified window index and MediaPeriodId. MediaSourceEventListener.EventDispatcher! createEventDispatcher(mediaPeriodId: MediaSource.MediaPeriodId?) Returns a MediaSourceEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified MediaPeriodId. MediaSourceEventListener.EventDispatcher! createEventDispatcher(     mediaPeriodId: MediaSource.MediaPeriodId!,     mediaTimeOffsetMs: Long ) This function is deprecated. Use createEventDispatcher instead. MediaSourceEventListener.EventDispatcher! createEventDispatcher(     windowIndex: Int,     mediaPeriodId: MediaSource.MediaPeriodId? ) Returns a MediaSourceEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified window index and MediaPeriodId. MediaSourceEventListener.EventDispatcher! createEventDispatcher(     windowIndex: Int,     mediaPeriodId: MediaSource.MediaPeriodId?,     mediaTimeOffsetMs: Long ) This function is deprecated. Use createEventDispatcher instead. Unit @UnstableApi disable(caller: MediaSource.MediaSourceCaller!) Disables the source for the creation of MediaPeriods. Unit @UnstableApi enable(caller: MediaSource.MediaSourceCaller!) Enables the source for the creation of MediaPeriods. Boolean isEnabled() Returns whether the source is enabled. Unit @UnstableApi prepareSource(     caller: MediaSource.MediaSourceCaller!,     mediaTransferListener: TransferListener? ) This function is deprecated. Implement prepareSource instead. Unit @UnstableApi prepareSource(     caller: MediaSource.MediaSourceCaller!,     mediaTransferListener: TransferListener?,     playerId: PlayerId! ) Registers a MediaSourceCaller. Boolean prepareSourceCalled() Returns whether the source has prepareSource called. Unit refreshSourceInfo(timeline: Timeline!) Updates timeline and manifest and notifies all listeners of the update. Unit @UnstableApi releaseSource(caller: MediaSource.MediaSourceCaller!) Unregisters a caller, and disables and releases the source if no longer required. Unit @UnstableApi removeDrmEventListener(eventListener: DrmSessionEventListener!) Removes a DrmSessionEventListener from the list of listeners which are notified of DRM events for this media source. Unit @UnstableApi removeEventListener(eventListener: MediaSourceEventListener!) Removes a MediaSourceEventListener from the list of listeners which are notified of media source events.
From androidx.media3.exoplayer.source.CompositeMediaSource Unit disableChildSource(@UnknownNull id: T!) Disables a child source. Unit @CallSuper disableInternal() Disables the source, see disable. Unit enableChildSource(@UnknownNull id: T!) Enables a child source. Unit @CallSuper enableInternal() Enables the source, see enable. MediaSource.MediaPeriodId? getMediaPeriodIdForChildMediaPeriodId(     @UnknownNull childSourceId: T!,     mediaPeriodId: MediaSource.MediaPeriodId! ) Returns the MediaPeriodId in the composite source corresponding to the specified in a child source. Long getMediaTimeForChildMediaTime(     @UnknownNull childSourceId: T!,     mediaTimeMs: Long,     mediaPeriodId: MediaSource.MediaPeriodId? ) Returns the media time in the MediaPeriod of the composite source corresponding to the specified media time in the MediaPeriod of the child source. Int getWindowIndexForChildWindowIndex(     @UnknownNull childSourceId: T!,     windowIndex: Int ) Returns the window index in the composite source corresponding to the specified window index in a child source. abstract Unit onChildSourceInfoRefreshed(     @UnknownNull childSourceId: T!,     mediaSource: MediaSource!,     newTimeline: Timeline! ) Called when the source info of a child source has been refreshed. Unit prepareChildSource(@UnknownNull id: T!, mediaSource: MediaSource!) Prepares a child source. Unit releaseChildSource(@UnknownNull id: T!) Releases a child source.
From androidx.media3.exoplayer.source.WrappingMediaSource Unit disableChildSource() Disables the child source. Unit enableChildSource() Enables the child source. 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 whose media is provided by the source. MediaSource.MediaPeriodId? getMediaPeriodIdForChildMediaPeriodId(     mediaPeriodId: MediaSource.MediaPeriodId! ) Returns the MediaPeriodId in the wrapping source corresponding to the specified in a child source. MediaSource.MediaPeriodId? getMediaPeriodIdForChildMediaPeriodId(     childSourceId: Void!,     mediaPeriodId: MediaSource.MediaPeriodId! ) Returns the MediaPeriodId in the composite source corresponding to the specified in a child source. Long getMediaTimeForChildMediaTime(     mediaTimeMs: Long,     mediaPeriodId: MediaSource.MediaPeriodId? ) Returns the media time in the MediaPeriod of the wrapping source corresponding to the specified media time in the MediaPeriod of the child source. Long getMediaTimeForChildMediaTime(     childSourceId: Void!,     mediaTimeMs: Long,     mediaPeriodId: MediaSource.MediaPeriodId? ) Returns the media time in the MediaPeriod of the composite source corresponding to the specified media time in the MediaPeriod of the child source. Int getWindowIndexForChildWindowIndex(windowIndex: Int) Returns the window index in the wrapping source corresponding to the specified window index in a child source. Int getWindowIndexForChildWindowIndex(childSourceId: Void!, windowIndex: Int) 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. Unit onChildSourceInfoRefreshed(     childSourceId: Void!,     mediaSource: MediaSource!,     newTimeline: Timeline! ) Called when the source info of a child source has been refreshed. Unit prepareChildSource() Prepares the wrapped child source. Unit prepareSourceInternal() Starts source preparation and enables the source, see prepareSource. Unit prepareSourceInternal(mediaTransferListener: TransferListener?) Starts source preparation and enables the source, see prepareSource. Unit releaseChildSource() Releases the child source. Unit updateMediaItem(mediaItem: MediaItem!) Updates the for this source.

Inherited properties
From androidx.media3.exoplayer.source.BaseMediaSource PlayerId? playerId
From androidx.media3.exoplayer.source.WrappingMediaSource MediaSource! mediaSource The wrapped child MediaSource.

Public constructors

ClippingMediaSource

ClippingMediaSource(mediaSource: MediaSource!, durationUs: Long)

Creates a new clipping source that wraps the specified source and provides samples from the default position for the specified duration.

Parameters
mediaSource: MediaSource!	The single-period source to wrap.
durationUs: Long	The duration from the default position in the window in mediaSource's timeline at which to stop providing samples. Specifying a duration that exceeds the mediaSource's duration will result in the end of the source not being clipped.

ClippingMediaSource

ClippingMediaSource(
    mediaSource: MediaSource!,
    startPositionUs: Long,
    endPositionUs: Long
)

Creates a new clipping source that wraps the specified source and provides samples between the specified start and end position.

Parameters
mediaSource: MediaSource!	The single-period source to wrap.
startPositionUs: Long	The start position within mediaSource's window at which to start providing samples, in microseconds.
endPositionUs: Long	The end position within mediaSource's window at which to stop providing samples, in microseconds. Specify TIME_END_OF_SOURCE to provide samples from the specified start point up to the end of the source. Specifying a position that exceeds the mediaSource's duration will also result in the end of the source not being clipped.

ClippingMediaSource

ClippingMediaSource(
    mediaSource: MediaSource!,
    startPositionUs: Long,
    endPositionUs: Long,
    enableInitialDiscontinuity: Boolean,
    allowDynamicClippingUpdates: Boolean,
    relativeToDefaultPosition: Boolean
)

Creates a new clipping source that wraps the specified source.

If the start point is guaranteed to be a key frame, pass false to enableInitialPositionDiscontinuity to suppress an initial discontinuity when a period is first read from.

For live streams, if the clipping positions should move with the live window, pass true to allowDynamicClippingUpdates. Otherwise, the live stream ends when the playback reaches endPositionUs in the last reported live window at the time a media period was created.

Parameters
mediaSource: MediaSource!	The single-period source to wrap.
startPositionUs: Long	The start position at which to start providing samples, in microseconds. If relativeToDefaultPosition is false, this position is relative to the start of the window in mediaSource's timeline. If relativeToDefaultPosition is true, this position is relative to the default position in the window in mediaSource's timeline.
endPositionUs: Long	The end position at which to stop providing samples, in microseconds. Specify TIME_END_OF_SOURCE to provide samples from the specified start point up to the end of the source. Specifying a position that exceeds the mediaSource's duration will also result in the end of the source not being clipped. If relativeToDefaultPosition is false, the specified position is relative to the start of the window in mediaSource's timeline. If relativeToDefaultPosition is true, this position is relative to the default position in the window in mediaSource's timeline.
enableInitialDiscontinuity: Boolean	Whether the initial discontinuity should be enabled.
allowDynamicClippingUpdates: Boolean	Whether the clipping of active media periods moves with a live window. If false, playback ends when it reaches endPositionUs in the last reported live window at the time a media period was created.
relativeToDefaultPosition: Boolean	Whether startPositionUs and endPositionUs are relative to the default position in the window in mediaSource's timeline.

Public functions

canUpdateMediaItem

fun canUpdateMediaItem(mediaItem: MediaItem!): Boolean

Returns whether the for this source can be updated with the provided item.

Should not be called directly from application code.

This method must be called on the application thread.

This method can be overridden to change whether the MediaItem of the child source can be updated.

createPeriod

fun createPeriod(
    id: MediaSource.MediaPeriodId!,
    allocator: Allocator!,
    startPositionUs: Long
): MediaPeriod!

Creates the requested MediaPeriod.

This method typically forwards to the wrapped media source and optionally wraps the returned MediaPeriod.

See also
createPeriod

maybeThrowSourceInfoRefreshError

fun maybeThrowSourceInfoRefreshError(): Unit

Throws any pending error encountered while loading or refreshing source information.

Should not be called directly from application code.

This method must be called on the playback thread and only after prepareSource.

Throws
java.io.IOException

releasePeriod

fun releasePeriod(mediaPeriod: MediaPeriod!): Unit

Releases a MediaPeriod.

This method typically forwards to the wrapped media source and optionally unwraps the provided MediaPeriod.

See also
releasePeriod

Protected functions

onChildSourceInfoRefreshed

protected fun onChildSourceInfoRefreshed(newTimeline: Timeline!): Unit

Called when the child source info has been refreshed.

This Timeline can be amended if needed, for example using . The Timeline for the wrapping source needs to be published with refreshSourceInfo.

Parameters
newTimeline: Timeline!	The timeline of the child source.

releaseSourceInternal

protected fun releaseSourceInternal(): Unit

Releases the source, see releaseSource. This method is called exactly once after each call to prepareSourceInternal.