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@UnstableApi
public final class DashMediaSource extends BaseMediaSource

java.lang.Object
   ↳ androidx.media3.exoplayer.source.BaseMediaSource
     ↳ androidx.media3.exoplayer.dash.DashMediaSource

A DASH MediaSource.

Summary

Nested types
public final class DashMediaSource.Factory implements MediaSourceFactory

Factory for DashMediaSources.

Constants
static final long

The default target offset for live streams that is used if no value is defined in the MediaItem or the manifest.
static final String
DEFAULT_MEDIA_ID = "DashMediaSource"

The media id used by media items of dash media sources without a manifest URI.
static final long

The minimum default start position for live streams, in microseconds relative to the start of the live window.

Public fields
MediaItem
@GuardedBy(value = "this")
mediaItem

Public methods
boolean

Returns whether the MediaItem for this source can be updated with the provided item.
MediaPeriod
createPeriod(
    MediaSource.MediaPeriodId id,
    Allocator allocator,
    long startPositionUs
)

Returns a new MediaPeriod identified by periodId.
synchronized MediaItem

Returns the MediaItem whose media is provided by the source.
void

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

Releases the period.
void
replaceManifestUri(Uri manifestUri)

Manually replaces the manifest Uri.
synchronized void

Updates the MediaItem for this source.

Protected methods
void

Starts source preparation and enables the source, see prepareSource.
void

Releases the source, see releaseSource.

Inherited fields
From androidx.media3.exoplayer.source.BaseMediaSource
@Nullable PlayerId

Inherited methods
From androidx.media3.exoplayer.source.BaseMediaSource
final void
@UnstableApi
addDrmEventListener(
    Handler handler,
    DrmSessionEventListener eventListener
)

Adds a DrmSessionEventListener to the list of listeners which are notified of DRM events for this media source.
final void
@UnstableApi
addEventListener(
    Handler handler,
    MediaSourceEventListener eventListener
)

Adds a MediaSourceEventListener to the list of listeners which are notified of media source events.
final DrmSessionEventListener.EventDispatcher

Returns a DrmSessionEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified MediaPeriodId
final DrmSessionEventListener.EventDispatcher
createDrmEventDispatcher(
    int windowIndex,
    @Nullable MediaSource.MediaPeriodId mediaPeriodId
)

Returns a DrmSessionEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified window index and MediaPeriodId.
final MediaSourceEventListener.EventDispatcher

Returns a MediaSourceEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified MediaPeriodId.
final MediaSourceEventListener.EventDispatcher
createEventDispatcher(
    MediaSource.MediaPeriodId mediaPeriodId,
    long mediaTimeOffsetMs
)

This method is deprecated.

Use createEventDispatcher instead.
final MediaSourceEventListener.EventDispatcher
createEventDispatcher(
    int windowIndex,
    @Nullable MediaSource.MediaPeriodId mediaPeriodId
)

Returns a MediaSourceEventListener.EventDispatcher which dispatches all events to the registered listeners with the specified window index and MediaPeriodId.
final MediaSourceEventListener.EventDispatcher
createEventDispatcher(
    int windowIndex,
    @Nullable MediaSource.MediaPeriodId mediaPeriodId,
    long mediaTimeOffsetMs
)

This method is deprecated.

Use createEventDispatcher instead.
final void

Disables the source for the creation of MediaPeriods.
void

Disables the source, see disable.
final void

Enables the source for the creation of MediaPeriods.
void

Enables the source, see enable.
final PlayerId

Returns the PlayerId of the player using this media source.
final boolean

Returns whether the source is enabled.
final void
@UnstableApi
prepareSource(
    MediaSource.MediaSourceCaller caller,
    @Nullable TransferListener mediaTransferListener
)

This method is deprecated.

Implement prepareSource instead.
final void
@UnstableApi
prepareSource(
    MediaSource.MediaSourceCaller caller,
    @Nullable TransferListener mediaTransferListener,
    PlayerId playerId
)

Registers a MediaSourceCaller.
final boolean

Returns whether the source has prepareSource called.
final void

Updates timeline and manifest and notifies all listeners of the update.
final void

Unregisters a caller, and disables and releases the source if no longer required.
final void

Removes a DrmSessionEventListener from the list of listeners which are notified of DRM events for this media source.
final void

Removes a MediaSourceEventListener from the list of listeners which are notified of media source events.
final void

Sets the PlayerId of the player using this media source.
From androidx.media3.exoplayer.source.MediaSource
@Nullable Timeline

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.
boolean

Returns true if the media source is guaranteed to never have zero or more than one window.

Constants

DEFAULT_FALLBACK_TARGET_LIVE_OFFSET_MS

public static final long DEFAULT_FALLBACK_TARGET_LIVE_OFFSET_MS = 30000

The default target offset for live streams that is used if no value is defined in the MediaItem or the manifest.

DEFAULT_MEDIA_ID

public static final String DEFAULT_MEDIA_ID = "DashMediaSource"

The media id used by media items of dash media sources without a manifest URI.

MIN_LIVE_DEFAULT_START_POSITION_US

public static final long MIN_LIVE_DEFAULT_START_POSITION_US = 5000000

The minimum default start position for live streams, in microseconds relative to the start of the live window.

Public fields

mediaItem

@GuardedBy(value = "this")
public MediaItem mediaItem

Public methods

canUpdateMediaItem

public boolean canUpdateMediaItem(MediaItem mediaItem)

Returns whether the MediaItem 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.

Parameters
MediaItem mediaItem

The new MediaItem.
Returns
boolean

Whether the source can be updated using this item.

createPeriod

public MediaPeriod createPeriod(
    MediaSource.MediaPeriodId id,
    Allocator allocator,
    long startPositionUs
)

Returns a new MediaPeriod identified by periodId.

Should not be called directly from application code.

This method must be called on the playback thread and only if the source is enabled.

Parameters
MediaSource.MediaPeriodId id

The identifier of the period.
Allocator allocator

An Allocator from which to obtain media buffer allocations.
long startPositionUs

The expected start position, in microseconds.
Returns
MediaPeriod

A new MediaPeriod.

getMediaItem

synchronized public MediaItem getMediaItem()

Returns the MediaItem whose media is provided by the source.

Should not be called directly from application code.

This method must be called on the application thread.

maybeThrowSourceInfoRefreshError

public void maybeThrowSourceInfoRefreshError()

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

public void releasePeriod(MediaPeriod mediaPeriod)

Releases the period.

Should not be called directly from application code.

This method must be called on the playback thread.

Parameters
MediaPeriod mediaPeriod

The period to release.

replaceManifestUri

public void replaceManifestUri(Uri manifestUri)

Manually replaces the manifest Uri.

Parameters
Uri manifestUri

The replacement manifest Uri.

updateMediaItem

synchronized public void updateMediaItem(MediaItem mediaItem)

Updates the MediaItem for this source.

Should not be called directly from application code.

This method must be called on the playback thread and only if canUpdateMediaItem returns true for the new MediaItem.

Parameters
MediaItem mediaItem

The new MediaItem.

Protected methods

prepareSourceInternal

protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener)

Starts source preparation and enables the source, see prepareSource. This method is called at most once until the next call to releaseSourceInternal.

This method is called on the playback thread.

Parameters
@Nullable TransferListener 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.

releaseSourceInternal

protected void releaseSourceInternal()

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

This method is called on the playback thread.
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