SimpleBasePlayer


@UnstableApi
abstract class SimpleBasePlayer : BasePlayer

Known direct subclasses
ForwardingSimpleBasePlayer

A SimpleBasePlayer that forwards all calls to another Player instance.


A base implementation for Player that reduces the number of methods to implement to a minimum.

Implementation notes:

  • Subclasses must override getState to populate the current player state on request.
  • The State should set the available commands to indicate which Player methods are supported.
  • All setter-like player methods (for example, setPlayWhenReady) forward to overridable methods (for example, handleSetPlayWhenReady) that can be used to handle these requests. These methods return a ListenableFuture to indicate when the request has been handled and is fully reflected in the values returned from getState. This class will automatically request a state update once the request is done. If the state changes can be handled synchronously, these methods can return Guava's immediateVoidFuture.
  • Subclasses can manually trigger state updates with invalidateState, for example if something changes independent of Player method calls.
This base class handles various aspects of the player implementation to simplify the subclass:
  • The State can only be created with allowed combinations of state values, avoiding any invalid player states.
  • Only functionality that is declared as available needs to be implemented. Other methods are automatically ignored.
  • Listener handling and informing listeners of state changes is handled automatically.
  • The base class provides a framework for asynchronous handling of method calls. It changes the visible playback state immediately to the most likely outcome to ensure the user-visible state changes look like synchronous operations. The state is then updated again once the asynchronous method calls have been fully handled.

Summary

Nested types

An immutable description of an item in the playlist, containing both static setup information like MediaItem and dynamic data that is generally read from the media like the duration.

A builder for MediaItemData objects.

Data describing the properties of a period inside a MediaItemData.

A builder for PeriodData objects.

A supplier for a position.

protected class SimpleBasePlayer.State

An immutable state description of the player.

A builder for State objects.

Protected constructors

SimpleBasePlayer(applicationLooper: Looper!)

Creates the base class.

SimpleBasePlayer(applicationLooper: Looper!, clock: Clock!)

Creates the base class.

Public functions

Unit

Registers a listener to receive all events from the player.

Unit
addMediaItems(index: Int, mediaItems: (Mutable)List<MediaItem!>!)

Adds a list of media items at the given index of the playlist.

Unit

Clears any Surface, SurfaceHolder, SurfaceView or TextureView currently set on the player.

Unit

Clears the Surface onto which video is being rendered if it matches the one passed.

Unit

Clears the SurfaceHolder that holds the Surface onto which video is being rendered if it matches the one passed.

Unit

Clears the SurfaceView onto which video is being rendered if it matches the one passed.

Unit

Clears the TextureView onto which video is being rendered if it matches the one passed.

Unit

This function is deprecated.

Use decreaseDeviceVolume instead.

Unit

Decreases the volume of the device.

AudioAttributes!

Returns the attributes for audio playback.

Player.Commands!

Returns the player's currently available Commands.

Long

Returns an estimate of the position in the current content or ad up to which data is buffered, in milliseconds.

Long

If isPlayingAd returns true, returns an estimate of the content position in the current content up to which data is buffered, in milliseconds.

Long

If isPlayingAd returns true, returns the content position that will be played once all ads in the ad group have finished playing, in milliseconds.

Int

If isPlayingAd returns true, returns the index of the ad group in the period currently being played.

Int

If isPlayingAd returns true, returns the index of the ad in its ad group.

CueGroup!

Returns the current CueGroup.

Int

Returns the index of the current MediaItem in the timeline, or the prospective index if the current timeline is empty.

Int

Returns the index of the period currently being played.

Long

Returns the playback position in the current content or ad, in milliseconds, or the prospective position in milliseconds if the current timeline is empty.

Timeline!

Returns the current Timeline.

Tracks!

Returns the current tracks.

DeviceInfo!

Gets the device information.

Int

Gets the current volume of the device.

Long

Returns the duration of the current content or ad in milliseconds, or TIME_UNSET if the duration is not known.

Long

Returns the maximum position for which seekToPrevious seeks to the previous , in milliseconds.

MediaMetadata!

Returns the current combined MediaMetadata, or EMPTY if not supported.

Boolean

Whether playback will proceed when getPlaybackState == STATE_READY.

PlaybackParameters!

Returns the currently active playback parameters.

Int

Returns the current playback state of the player.

Int

Returns the reason why playback is suppressed even though getPlayWhenReady is true, or PLAYBACK_SUPPRESSION_REASON_NONE if playback is not suppressed.

PlaybackException?

Returns the error that caused playback to fail.

MediaMetadata!

Returns the playlist MediaMetadata, as set by setPlaylistMetadata, or EMPTY if not supported.

Int

Returns the current RepeatMode used for playback.

Long

Returns the seekBack increment.

Long

Returns the seekForward increment.

Boolean

Returns whether shuffling of media items is enabled.

Size!

Gets the size of the surface on which the video is rendered.

Long

Returns an estimate of the total buffered duration from the current position, in milliseconds.

TrackSelectionParameters!

Returns the parameters constraining the track selection.

VideoSize!

Gets the size of the video.

Float

Returns the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).

Unit

This function is deprecated.

Use increaseDeviceVolume instead.

Unit

Increases the volume of the device.

Boolean

Gets whether the device is muted or not.

Boolean

Whether the player is currently loading the source.

Boolean

Returns whether the player is currently playing an ad.

Unit
moveMediaItems(fromIndex: Int, toIndex: Int, newIndex: Int)

Moves the media item range to the new index.

Unit

Prepares the player.

Unit

Releases the player.

Unit

Unregister a listener registered through addListener.

Unit
removeMediaItems(fromIndex: Int, toIndex: Int)

Removes a range of media items from the playlist.

Unit
replaceMediaItems(
    fromIndex: Int,
    toIndex: Int,
    mediaItems: (Mutable)List<MediaItem!>!
)

Replaces the media items at the given range of the playlist.

Unit
@VisibleForTesting(otherwise = 4)
seekTo(
    mediaItemIndex: Int,
    positionMs: Long,
    @Player.Command seekCommand: Int,
    isRepeatingCurrentItem: Boolean
)

Seeks to a position in the specified MediaItem.

Unit
setAudioAttributes(
    audioAttributes: AudioAttributes!,
    handleAudioFocus: Boolean
)

Sets the attributes for audio playback, used by the underlying audio track.

Unit

This function is deprecated.

Use setDeviceMuted instead.

Unit

Sets the mute state of the device.

Unit

This function is deprecated.

Use setDeviceVolume instead.

Unit
setDeviceVolume(volume: Int, @C.VolumeFlags flags: Int)

Sets the volume of the device with volume flags.

Unit
setMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    resetPosition: Boolean
)

Clears the playlist and adds the specified media items.

Unit
setMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    startIndex: Int,
    startPositionMs: Long
)

Clears the playlist and adds the specified media items.

Unit
setPlayWhenReady(playWhenReady: Boolean)

Sets whether playback should proceed when getPlaybackState == STATE_READY.

Unit

Attempts to set the playback parameters.

Unit

Sets the playlist MediaMetadata.

Unit

Sets the RepeatMode to be used for playback.

Unit
setShuffleModeEnabled(shuffleModeEnabled: Boolean)

Sets whether shuffling of media items is enabled.

Unit

Sets the parameters constraining the track selection.

Unit

Sets the Surface onto which video will be rendered.

Unit

Sets the SurfaceHolder that holds the Surface onto which video will be rendered.

Unit

Sets the SurfaceView onto which video will be rendered.

Unit

Sets the TextureView onto which video will be rendered.

Unit
setVolume(volume: Float)

Sets the audio volume, valid values are between 0 (silence) and 1 (unity gain, signal unchanged), inclusive.

Unit

Stops playback without resetting the playlist.

Protected functions

SimpleBasePlayer.MediaItemData!

Returns the placeholder MediaItemData used for a new MediaItem added to the playlist.

SimpleBasePlayer.State!

Returns the placeholder state used while a player method is handled asynchronously.

ListenableFuture<Any!>!

Handles calls to addMediaItem and addMediaItems.

ListenableFuture<Any!>!

Handles calls to clear the video output.

ListenableFuture<Any!>!

Handles calls to decreaseDeviceVolume and decreaseDeviceVolume.

ListenableFuture<Any!>!

Handles calls to increaseDeviceVolume and increaseDeviceVolume.

ListenableFuture<Any!>!
@ForOverride
handleMoveMediaItems(fromIndex: Int, toIndex: Int, newIndex: Int)

Handles calls to moveMediaItem and moveMediaItems.

ListenableFuture<Any!>!

Handles calls to prepare.

ListenableFuture<Any!>!

Handles calls to release.

ListenableFuture<Any!>!
@ForOverride
handleRemoveMediaItems(fromIndex: Int, toIndex: Int)

Handles calls to removeMediaItem and removeMediaItems.

ListenableFuture<Any!>!
@ForOverride
handleReplaceMediaItems(
    fromIndex: Int,
    toIndex: Int,
    mediaItems: (Mutable)List<MediaItem!>!
)

Handles calls to replaceMediaItem and replaceMediaItems.

ListenableFuture<Any!>!
@ForOverride
handleSeek(
    mediaItemIndex: Int,
    positionMs: Long,
    @Player.Command seekCommand: Int
)

Handles calls to seekTo and other seek operations (for example, seekToNext).

ListenableFuture<Any!>!
@ForOverride
handleSetAudioAttributes(
    audioAttributes: AudioAttributes!,
    handleAudioFocus: Boolean
)

Handles calls to set the audio attributes.

ListenableFuture<Any!>!

Handles calls to setDeviceMuted and setDeviceMuted.

ListenableFuture<Any!>!
@ForOverride
handleSetDeviceVolume(deviceVolume: @IntRange(from = 0) Int, flags: Int)

Handles calls to setDeviceVolume and setDeviceVolume.

ListenableFuture<Any!>!
@ForOverride
handleSetMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    startIndex: Int,
    startPositionMs: Long
)

Handles calls to setMediaItem and setMediaItems.

ListenableFuture<Any!>!

Handles calls to setPlayWhenReady, play and pause.

ListenableFuture<Any!>!

Handles calls to setPlaybackParameters or setPlaybackSpeed.

ListenableFuture<Any!>!

Handles calls to setPlaylistMetadata.

ListenableFuture<Any!>!

Handles calls to setRepeatMode.

ListenableFuture<Any!>!

Handles calls to setShuffleModeEnabled.

ListenableFuture<Any!>!

Handles calls to setTrackSelectionParameters.

ListenableFuture<Any!>!

Handles calls to set the video output.

ListenableFuture<Any!>!
@ForOverride
handleSetVolume(volume: @FloatRange(from = 0, to = 1.0) Float)

Handles calls to setVolume.

ListenableFuture<Any!>!

Handles calls to stop.

Unit

Invalidates the current state.

Unit

Throws an IllegalStateException if the the thread calling this method does not match the Looper thread that was specified upon construction of this instance.

Public properties

Looper!

Inherited Constants

From androidx.media3.common.Player
const Int

This property is deprecated.

Use COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS instead.

const Int

Command to increase and decrease the device volume and mute it with volume flags.

const Int

Command to change the media items in the playlist.

const Int

Command to get the player current AudioAttributes.

const Int

Command to get information about the currently playing MediaItem.

const Int

Command to get the device volume and whether it is muted.

const Int

This property is deprecated.

Use COMMAND_GET_METADATA instead.

const Int

Command to get metadata related to the playlist and current MediaItem.

const Int

Command to get the text that should currently be displayed by the player.

const Int

Command to get the information about the current timeline.

const Int

Command to get details of the current track selection.

const Int

Command to get the player volume.

const Int

Represents an invalid Command.

const Int

Command to start, pause or resume playback.

const Int

Command to prepare the player.

const Int

Command to release the player.

const Int

Command to seek back by a fixed increment inside the current MediaItem.

const Int

Command to seek forward by a fixed increment inside the current MediaItem.

const Int

Command to seek anywhere inside the current MediaItem.

const Int

This property is deprecated.

Use COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM instead.

const Int

Command to seek to the default position of the current MediaItem.

const Int

Command to seek anywhere in any MediaItem.

const Int

Command to seek to a later position in the current MediaItem or the default position of the next MediaItem.

const Int

Command to seek to the default position of the next MediaItem.

const Int

This property is deprecated.

Use COMMAND_SEEK_TO_NEXT_MEDIA_ITEM instead.

const Int

Command to seek to an earlier position in the current MediaItem or the default position of the previous MediaItem.

const Int

Command to seek to the default position of the previous MediaItem.

const Int

This property is deprecated.

Use COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM instead.

const Int

This property is deprecated.

Use COMMAND_SEEK_TO_MEDIA_ITEM instead.

const Int

Command to set the player's audio attributes.

const Int

This property is deprecated.

Use COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS instead.

const Int

Command to set the device volume with volume flags.

const Int

Command to set a MediaItem.

const Int

This property is deprecated.

Use COMMAND_SET_PLAYLIST_METADATA instead.

const Int

Command to set the playlist metadata.

const Int

Command to set the repeat mode.

const Int

Command to enable shuffling.

const Int

Command to set the playback speed and pitch.

const Int

Command to set the player's track selection parameters.

const Int

Command to set and clear the surface on which to render the video.

const Int

Command to set the player volume.

const Int

Command to stop playback.

const Int

Automatic playback transition from one period in the timeline to the next.

const Int

Discontinuity introduced internally (e.g. by the source).

const Int

Discontinuity caused by the removal of the current period from the Timeline.

const Int

Seek within the current period or to another period.

const Int

Seek adjustment due to being unable to seek to the requested position or because the seek was permitted to be inexact.

const Int

Discontinuity introduced by a skipped silence.

const Int

Discontinuity introduced by a skipped period (for instance a skipped ad).

const Int

getAudioAttributes changed.

const Int

The audio session id was set.

const Int

isCommandAvailable changed for at least one Command.

const Int

getCurrentCues changed.

const Int

getDeviceInfo changed.

const Int

getDeviceVolume changed.

const Int

isLoading ()} changed.

const Int

isPlaying changed.

const Int

getMaxSeekToPreviousPosition changed.

const Int

getCurrentMediaItem changed or the player started repeating the current item.

const Int

getMediaMetadata changed.

const Int

Metadata associated with the current playback time changed.

const Int

getPlaybackParameters changed.

const Int

getPlaybackState changed.

const Int

getPlaybackSuppressionReason changed.

const Int

getPlayerError changed.

const Int

getPlaylistMetadata changed.

const Int

getPlayWhenReady changed.

const Int

A position discontinuity occurred.

const Int

A frame is rendered for the first time since setting the surface, or since the renderer was reset, or since the stream being rendered was changed.

const Int

getRepeatMode changed.

const Int

getSeekBackIncrement changed.

const Int

getSeekForwardIncrement changed.

const Int

getShuffleModeEnabled changed.

const Int

Skipping silences in the audio stream is enabled or disabled.

const Int

The size of the surface onto which the video is being rendered changed.

const Int

getCurrentTimeline changed.

const Int

getCurrentTracks changed.

const Int

getTrackSelectionParameters changed.

const Int

getVideoSize changed.

const Int

getVolume changed.

const Int

Playback has automatically transitioned to the next media item.

const Int

The current media item has changed because of a change in the playlist.

const Int

The media item has been repeated.

const Int

A seek to another media item has occurred.

const Int

Playback is not suppressed.

const Int

Playback is suppressed due to transient audio focus loss.

const Int

Playback is suppressed due to attempt to play on an unsuitable audio output (e.g. attempt to play on built-in speaker on a Wear OS device).

const Int

This property is deprecated.

Use PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_OUTPUT instead.

const Int

Playback has been paused to avoid becoming noisy.

const Int

Playback has been paused because of a loss of audio focus.

const Int

Playback has been paused at the end of a media item.

const Int

Playback has been started or paused because of a remote change.

const Int

Playback has been paused because playback has been suppressed too long.

const Int

Playback has been started or paused by a call to setPlayWhenReady.

const Int

Repeats the entire timeline infinitely.

const Int

Normal playback without repetition.

const Int

Repeats the currently playing MediaItem infinitely during ongoing playback.

const Int

The player is not able to immediately play the media, but is doing work toward being able to do so.

const Int

The player has finished playing the media.

const Int

The player is idle, meaning it holds only limited resources.

const Int

The player is able to immediately play from its current position.

const Int

Timeline changed as a result of a change of the playlist items or the order of the items.

const Int

Timeline changed as a result of a source update (e.g. result of a dynamic update by the played media).

Inherited functions

From androidx.media3.common.BasePlayer
Unit
addMediaItem(mediaItem: MediaItem!)

Adds a media item to the end of the playlist.

Unit
addMediaItem(index: Int, mediaItem: MediaItem!)

Adds a media item at the given index of the playlist.

Unit

Adds a list of media items to the end of the playlist.

Boolean

Returns whether the player can be used to advertise a media session.

Unit

Clears the playlist.

Int

Returns an estimate of the percentage in the current content or ad up to which data is buffered, or 0 if no estimate is available.

Long

If isPlayingAd returns true, returns the duration of the current content in milliseconds, or TIME_UNSET if the duration is not known.

Long

Returns the offset of the current playback position from the live edge in milliseconds, or TIME_UNSET if the current MediaItemisn't live or the offset is unknown.

Any?

Returns the current manifest.

MediaItem?

Returns the currently playing MediaItem.

Int

This function is deprecated.

Use getCurrentMediaItemIndex instead.

MediaItem!

Returns the MediaItem at the given index.

Int

Returns the number of media items in the playlist.

Int

Returns the index of the MediaItem that will be played if seekToNextMediaItem is called, which may depend on the current repeat mode and whether shuffle mode is enabled.

Int

This function is deprecated.

Use getNextMediaItemIndex instead.

Int

Returns the index of the MediaItem that will be played if seekToPreviousMediaItem is called, which may depend on the current repeat mode and whether shuffle mode is enabled.

Int

This function is deprecated.

Use getPreviousMediaItemIndex instead.

Boolean

This function is deprecated.

Use hasNextMediaItem instead.

Boolean

Returns whether a next MediaItem exists, which may depend on the current repeat mode and whether shuffle mode is enabled.

Boolean

This function is deprecated.

Use hasNextMediaItem instead.

Boolean

Returns whether a previous media item exists, which may depend on the current repeat mode and whether shuffle mode is enabled.

Boolean

Returns whether the provided Command is available.

Boolean

Returns whether the current MediaItem is dynamic (may change when the Timeline is updated), or false if the Timeline is empty.

Boolean

Returns whether the current MediaItem is live, or false if the Timeline is empty.

Boolean

Returns whether the current MediaItem is seekable, or false if the is empty.

Boolean

This function is deprecated.

Use isCurrentMediaItemDynamic instead.

Boolean

This function is deprecated.

Use isCurrentMediaItemLive instead.

Boolean

This function is deprecated.

Use isCurrentMediaItemSeekable instead.

Boolean

Returns whether the player is playing, i.e. getCurrentPosition is advancing.

Unit
moveMediaItem(currentIndex: Int, newIndex: Int)

Moves the media item at the current index to the new index.

Unit

This function is deprecated.

Use seekToNextMediaItem instead.

Unit

Pauses playback.

Unit

Resumes playback as soon as getPlaybackState == STATE_READY.

Unit

Removes the media item at the given index of the playlist.

Unit
replaceMediaItem(index: Int, mediaItem: MediaItem!)

Replaces the media item at the given index of the playlist.

Unit

Seeks back in the current MediaItem by getSeekBackIncrement milliseconds.

Unit

Seeks forward in the current MediaItem by getSeekForwardIncrement milliseconds.

Unit
seekTo(positionMs: Long)

Seeks to a position specified in milliseconds in the current MediaItem.

Unit
seekTo(mediaItemIndex: Int, positionMs: Long)

Seeks to a position specified in milliseconds in the specified MediaItem.

Unit

Seeks to the default position associated with the current MediaItem.

Unit
seekToDefaultPosition(mediaItemIndex: Int)

Seeks to the default position associated with the specified MediaItem.

Unit

Seeks to a later position in the current or next MediaItem (if available).

Unit

Seeks to the default position of the next MediaItem, which may depend on the current repeat mode and whether shuffle mode is enabled.

Unit

This function is deprecated.

Use seekToNextMediaItem instead.

Unit

Seeks to an earlier position in the current or previous MediaItem (if available).

Unit

Seeks to the default position of the previous MediaItem, which may depend on the current repeat mode and whether shuffle mode is enabled.

Unit

This function is deprecated.

Use seekToPreviousMediaItem instead.

Unit
setMediaItem(mediaItem: MediaItem!)

Clears the playlist, adds the specified MediaItem and resets the position to the default position.

Unit
setMediaItem(mediaItem: MediaItem!, resetPosition: Boolean)

Clears the playlist and adds the specified MediaItem.

Unit
setMediaItem(mediaItem: MediaItem!, startPositionMs: Long)

Clears the playlist and adds the specified MediaItem.

Unit

Clears the playlist, adds the specified media items and resets the position to the default position.

Unit

Changes the rate at which playback occurs.

From androidx.media3.common.Player
abstract Unit
setPlaybackSpeed(speed: @FloatRange(from = 0, fromInclusive = false) Float)

Changes the rate at which playback occurs.

Protected constructors

SimpleBasePlayer

protected SimpleBasePlayer(applicationLooper: Looper!)

Creates the base class.

Parameters
applicationLooper: Looper!

The Looper that must be used for all calls to the player and that is used to call listeners on.

SimpleBasePlayer

protected SimpleBasePlayer(applicationLooper: Looper!, clock: Clock!)

Creates the base class.

Parameters
applicationLooper: Looper!

The Looper that must be used for all calls to the player and that is used to call listeners on.

clock: Clock!

The Clock that will be used by the player.

Public functions

addListener

fun addListener(listener: Player.Listener!): Unit

Registers a listener to receive all events from the player.

The listener's methods will be called on the thread associated with getApplicationLooper.

This method can be called from any thread.

Parameters
listener: Player.Listener!

The listener to register.

addMediaItems

fun addMediaItems(index: Int, mediaItems: (Mutable)List<MediaItem!>!): Unit

Adds a list of media items at the given index of the playlist.

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
index: Int

The index at which to add the media items. If the index is larger than the size of the playlist, the media items are added to the end of the playlist.

mediaItems: (Mutable)List<MediaItem!>!

The media items to add.

clearVideoSurface

fun clearVideoSurface(): Unit

Clears any Surface, SurfaceHolder, SurfaceView or TextureView currently set on the player.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

clearVideoSurface

fun clearVideoSurface(surface: Surface?): Unit

Clears the Surface onto which video is being rendered if it matches the one passed. Else does nothing.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surface: Surface?

The surface to clear.

clearVideoSurfaceHolder

fun clearVideoSurfaceHolder(surfaceHolder: SurfaceHolder?): Unit

Clears the SurfaceHolder that holds the Surface onto which video is being rendered if it matches the one passed. Else does nothing.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surfaceHolder: SurfaceHolder?

The surface holder to clear.

clearVideoSurfaceView

fun clearVideoSurfaceView(surfaceView: SurfaceView?): Unit

Clears the SurfaceView onto which video is being rendered if it matches the one passed. Else does nothing.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surfaceView: SurfaceView?

The texture view to clear.

clearVideoTextureView

fun clearVideoTextureView(textureView: TextureView?): Unit

Clears the TextureView onto which video is being rendered if it matches the one passed. Else does nothing.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
textureView: TextureView?

The texture view to clear.

decreaseDeviceVolume

fun decreaseDeviceVolume(): Unit

decreaseDeviceVolume

fun decreaseDeviceVolume(@C.VolumeFlags flags: Int): Unit

Decreases the volume of the device.

The getDeviceVolume device volume cannot be decreased below minVolume.

Note that this method affects the device volume. To change the volume of the current stream only, use setVolume.

This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

getAudioAttributes

fun getAudioAttributes(): AudioAttributes!

Returns the attributes for audio playback.

This method must only be called if COMMAND_GET_AUDIO_ATTRIBUTES is available.

getAvailableCommands

fun getAvailableCommands(): Player.Commands!

Returns the player's currently available Commands.

The returned Commands are not updated when available commands change. Use onAvailableCommandsChanged to get an update when the available commands change.

Returns
Player.Commands!

The currently available Commands.

getBufferedPosition

fun getBufferedPosition(): Long

Returns an estimate of the position in the current content or ad up to which data is buffered, in milliseconds.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getContentBufferedPosition

fun getContentBufferedPosition(): Long

If isPlayingAd returns true, returns an estimate of the content position in the current content up to which data is buffered, in milliseconds. If there is no ad playing, the returned position is the same as that returned by getBufferedPosition.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getContentPosition

fun getContentPosition(): Long

If isPlayingAd returns true, returns the content position that will be played once all ads in the ad group have finished playing, in milliseconds. If there is no ad playing, the returned position is the same as that returned by getCurrentPosition.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getCurrentAdGroupIndex

fun getCurrentAdGroupIndex(): Int

If isPlayingAd returns true, returns the index of the ad group in the period currently being played. Returns INDEX_UNSET otherwise.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getCurrentAdIndexInAdGroup

fun getCurrentAdIndexInAdGroup(): Int

If isPlayingAd returns true, returns the index of the ad in its ad group. Returns INDEX_UNSET otherwise.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getCurrentCues

fun getCurrentCues(): CueGroup!

Returns the current CueGroup.

This method must only be called if COMMAND_GET_TEXT is available.

See also
onCues

getCurrentMediaItemIndex

fun getCurrentMediaItemIndex(): Int

Returns the index of the current MediaItem in the timeline, or the prospective index if the current timeline is empty.

This method must only be called if COMMAND_GET_TIMELINE is available.

getCurrentPeriodIndex

fun getCurrentPeriodIndex(): Int

Returns the index of the period currently being played.

This method must only be called if COMMAND_GET_TIMELINE is available.

getCurrentPosition

fun getCurrentPosition(): Long

Returns the playback position in the current content or ad, in milliseconds, or the prospective position in milliseconds if the current timeline is empty.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getCurrentTimeline

fun getCurrentTimeline(): Timeline!

Returns the current Timeline. Never null, but may be empty.

This method must only be called if COMMAND_GET_TIMELINE is available.

getCurrentTracks

fun getCurrentTracks(): Tracks!

Returns the current tracks.

This method must only be called if COMMAND_GET_TRACKS is available.

See also
onTracksChanged

getDeviceInfo

fun getDeviceInfo(): DeviceInfo!

Gets the device information.

getDeviceVolume

fun getDeviceVolume(): Int

Gets the current volume of the device.

For devices with local playback, the volume returned by this method varies according to the current stream type. The stream type is determined by usage which can be converted to stream type with getStreamTypeForAudioUsage.

For devices with remote playback, the volume of the remote device is returned.

Note that this method returns the volume of the device. To check the current stream volume, use getVolume.

This method must only be called if COMMAND_GET_DEVICE_VOLUME is available.

getDuration

fun getDuration(): Long

Returns the duration of the current content or ad in milliseconds, or TIME_UNSET if the duration is not known.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getMaxSeekToPreviousPosition

fun getMaxSeekToPreviousPosition(): Long

Returns the maximum position for which seekToPrevious seeks to the previous , in milliseconds.

Returns
Long

The maximum seek to previous position, in milliseconds.

getMediaMetadata

fun getMediaMetadata(): MediaMetadata!

Returns the current combined MediaMetadata, or EMPTY if not supported.

This MediaMetadata is a combination of the MediaItem metadata, the static metadata in the media's Format, and any timed metadata that has been parsed from the media and output via onMetadata. If a field is populated in the mediaMetadata, it will be prioritised above the same field coming from static or timed metadata.

This method must only be called if COMMAND_GET_METADATA is available.

getPlayWhenReady

fun getPlayWhenReady(): Boolean

Whether playback will proceed when getPlaybackState == STATE_READY.

Returns
Boolean

Whether playback will proceed when ready.

getPlaybackParameters

fun getPlaybackParameters(): PlaybackParameters!

Returns the currently active playback parameters.

getPlaybackState

@Player.State
fun getPlaybackState(): Int

Returns the current playback state of the player.

Returns
Int

The current playback state.

getPlaybackSuppressionReason

fun getPlaybackSuppressionReason(): Int

Returns the reason why playback is suppressed even though getPlayWhenReady is true, or PLAYBACK_SUPPRESSION_REASON_NONE if playback is not suppressed.

Returns
Int

The current PlaybackSuppressionReason.

getPlayerError

fun getPlayerError(): PlaybackException?

Returns the error that caused playback to fail. This is the same error that will have been reported via onPlayerError at the time of failure. It can be queried using this method until the player is re-prepared.

Note that this method will always return null if getPlaybackState is not STATE_IDLE.

Returns
PlaybackException?

The error, or null.

See also
onPlayerError

getPlaylistMetadata

fun getPlaylistMetadata(): MediaMetadata!

Returns the playlist MediaMetadata, as set by setPlaylistMetadata, or EMPTY if not supported.

This method must only be called if COMMAND_GET_METADATA is available.

getRepeatMode

@Player.RepeatMode
fun getRepeatMode(): Int

Returns the current RepeatMode used for playback.

Returns
Int

The current repeat mode.

getSeekBackIncrement

fun getSeekBackIncrement(): Long

Returns the seekBack increment.

Returns
Long

The seek back increment, in milliseconds.

getSeekForwardIncrement

fun getSeekForwardIncrement(): Long

Returns the seekForward increment.

Returns
Long

The seek forward increment, in milliseconds.

getShuffleModeEnabled

fun getShuffleModeEnabled(): Boolean

Returns whether shuffling of media items is enabled.

getSurfaceSize

fun getSurfaceSize(): Size!

Gets the size of the surface on which the video is rendered.

getTotalBufferedDuration

fun getTotalBufferedDuration(): Long

Returns an estimate of the total buffered duration from the current position, in milliseconds. This includes pre-buffered data for subsequent ads and media items.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

getTrackSelectionParameters

fun getTrackSelectionParameters(): TrackSelectionParameters!

Returns the parameters constraining the track selection.

getVideoSize

fun getVideoSize(): VideoSize!

Gets the size of the video.

The video's width and height are 0 if there is no supported video track or its size has not been determined yet.

getVolume

fun getVolume(): Float

Returns the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).

This method must only be called if COMMAND_GET_VOLUME is available.

Returns
Float

The linear gain applied to all audio channels.

See also
onVolumeChanged

increaseDeviceVolume

fun increaseDeviceVolume(): Unit

increaseDeviceVolume

fun increaseDeviceVolume(@C.VolumeFlags flags: Int): Unit

Increases the volume of the device.

The getDeviceVolume device volume cannot be increased above maxVolume, if defined.

Note that this method affects the device volume. To change the volume of the current stream only, use setVolume.

This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

isDeviceMuted

fun isDeviceMuted(): Boolean

Gets whether the device is muted or not.

Note that this method returns the mute state of the device. To check if the current stream is muted, use getVolume() == 0.

This method must only be called if COMMAND_GET_DEVICE_VOLUME is available.

isLoading

fun isLoading(): Boolean

Whether the player is currently loading the source.

Returns
Boolean

Whether the player is currently loading the source.

isPlayingAd

fun isPlayingAd(): Boolean

Returns whether the player is currently playing an ad.

This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.

moveMediaItems

fun moveMediaItems(fromIndex: Int, toIndex: Int, newIndex: Int): Unit

Moves the media item range to the new index.

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
fromIndex: Int

The start of the range to move. If the index is larger than the size of the playlist, the request is ignored.

toIndex: Int

The first item not to be included in the range (exclusive). If the index is larger than the size of the playlist, items up to the end of the playlist are moved.

newIndex: Int

The new index of the first media item of the range. If the new index is larger than the size of the remaining playlist after removing the range, the range is moved to the end of the playlist.

prepare

fun prepare(): Unit

Prepares the player.

This method must only be called if COMMAND_PREPARE is available.

This will move the player out of idle state and the player will start loading media and acquire resources needed for playback.

release

fun release(): Unit

Releases the player. This method must be called when the player is no longer required. The player must not be used after calling this method.

This method must only be called if COMMAND_RELEASE is available.

removeListener

fun removeListener(listener: Player.Listener!): Unit

Unregister a listener registered through addListener. The listener will no longer receive events.

Parameters
listener: Player.Listener!

The listener to unregister.

removeMediaItems

fun removeMediaItems(fromIndex: Int, toIndex: Int): Unit

Removes a range of media items from the playlist.

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
fromIndex: Int

The index at which to start removing media items. If the index is larger than the size of the playlist, the request is ignored.

toIndex: Int

The index of the first item to be kept (exclusive). If the index is larger than the size of the playlist, media items up to the end of the playlist are removed.

replaceMediaItems

fun replaceMediaItems(
    fromIndex: Int,
    toIndex: Int,
    mediaItems: (Mutable)List<MediaItem!>!
): Unit

Replaces the media items at the given range of the playlist.

Implementations of this method may attempt to seamlessly continue playback if the currently playing media item is replaced with a compatible one (e.g. same URL, only metadata has changed).

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Note that it is possible to replace a range with an arbitrary number of new items, so that the number of removed items defined by fromIndex and toIndex does not have to match the number of added items defined by mediaItems. As result, it may also change the index of subsequent items not touched by this operation.

Parameters
fromIndex: Int

The start of the range. If the index is larger than the size of the playlist, the request is ignored.

toIndex: Int

The first item not to be included in the range (exclusive). If the index is larger than the size of the playlist, items up to the end of the playlist are replaced.

mediaItems: (Mutable)List<MediaItem!>!

The media items to replace the range with.

seekTo

@VisibleForTesting(otherwise = 4)
fun seekTo(
    mediaItemIndex: Int,
    positionMs: Long,
    @Player.Command seekCommand: Int,
    isRepeatingCurrentItem: Boolean
): Unit

Seeks to a position in the specified MediaItem.

Parameters
mediaItemIndex: Int

The index of the MediaItem. If the original seek operation did not directly specify an index, this is the most likely implied index based on the available player state. If the implied action is to do nothing, this will be INDEX_UNSET.

positionMs: Long

The seek position in the specified MediaItem in milliseconds, or TIME_UNSET to seek to the media item's default position. If the original seek operation did not directly specify a position, this is the most likely implied position based on the available player state.

@Player.Command seekCommand: Int

The Player.Command used to trigger the seek.

isRepeatingCurrentItem: Boolean

Whether this seeks repeats the current item.

setAudioAttributes

fun setAudioAttributes(
    audioAttributes: AudioAttributes!,
    handleAudioFocus: Boolean
): Unit

Sets the attributes for audio playback, used by the underlying audio track. If not set, the default audio attributes will be used. They are suitable for general media playback.

Setting the audio attributes during playback may introduce a short gap in audio output as the audio track is recreated. A new audio session id will also be generated.

If tunneling is enabled by the track selector, the specified audio attributes will be ignored, but they will take effect if audio is later played without tunneling.

If the device is running a build before platform API version 21, audio attributes cannot be set directly on the underlying audio track. In this case, the usage will be mapped onto an equivalent stream type using getStreamTypeForAudioUsage.

If audio focus should be handled, the usage must be USAGE_MEDIA or USAGE_GAME. Other usages will throw an .

This method must only be called if COMMAND_SET_AUDIO_ATTRIBUTES is available.

Parameters
audioAttributes: AudioAttributes!

The attributes to use for audio playback.

handleAudioFocus: Boolean

True if the player should handle audio focus, false otherwise.

setDeviceMuted

fun setDeviceMuted(muted: Boolean): Unit

setDeviceMuted

fun setDeviceMuted(muted: Boolean, @C.VolumeFlags flags: Int): Unit

Sets the mute state of the device.

Note that this method affects the device volume. To mute just the current stream, use setVolume(0) instead.

This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
muted: Boolean

Whether to set the device to be muted or not

@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

setDeviceVolume

fun setDeviceVolume(volume: Int): Unit

setDeviceVolume

fun setDeviceVolume(volume: Int, @C.VolumeFlags flags: Int): Unit

Sets the volume of the device with volume flags.

Note that this method affects the device volume. To change the volume of the current stream only, use setVolume.

This method must only be called if COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
volume: Int

The volume to set.

@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

setMediaItems

fun setMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    resetPosition: Boolean
): Unit

Clears the playlist and adds the specified media items.

To replace a span of media items (possibly seamlessly) without clearing the playlist, use replaceMediaItems.

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
mediaItems: (Mutable)List<MediaItem!>!

The new media items.

resetPosition: Boolean

Whether the playback position should be reset to the default position in the first Timeline.Window. If false, playback will start from the position defined by getCurrentMediaItemIndex and getCurrentPosition.

setMediaItems

fun setMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    startIndex: Int,
    startPositionMs: Long
): Unit

Clears the playlist and adds the specified media items.

To replace a span of media items (possibly seamlessly) without clearing the playlist, use replaceMediaItems.

This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
mediaItems: (Mutable)List<MediaItem!>!

The new media items.

startIndex: Int

The MediaItem index to start playback from. If INDEX_UNSET is passed, the current position is not reset.

startPositionMs: Long

The position in milliseconds to start playback from. If TIME_UNSET is passed, the default position of the given MediaItem is used. In any case, if startIndex is set to INDEX_UNSET, this parameter is ignored and the position is not reset at all.

Throws
androidx.media3.common.IllegalSeekPositionException

If the provided startIndex is not within the bounds of the list of media items.

setPlayWhenReady

fun setPlayWhenReady(playWhenReady: Boolean): Unit

Sets whether playback should proceed when getPlaybackState == STATE_READY.

If the player is already in the ready state then this method pauses and resumes playback.

This method must only be called if COMMAND_PLAY_PAUSE is available.

Parameters
playWhenReady: Boolean

Whether playback should proceed when ready.

setPlaybackParameters

fun setPlaybackParameters(playbackParameters: PlaybackParameters!): Unit

Attempts to set the playback parameters. Passing DEFAULT resets the player to the default, which means there is no speed or pitch adjustment.

Playback parameters changes may cause the player to buffer. onPlaybackParametersChanged will be called whenever the currently active playback parameters change.

This method must only be called if COMMAND_SET_SPEED_AND_PITCH is available.

Parameters
playbackParameters: PlaybackParameters!

The playback parameters.

setPlaylistMetadata

fun setPlaylistMetadata(mediaMetadata: MediaMetadata!): Unit

Sets the playlist MediaMetadata.

This method must only be called if COMMAND_SET_PLAYLIST_METADATA is available.

setRepeatMode

fun setRepeatMode(@Player.RepeatMode repeatMode: Int): Unit

Sets the RepeatMode to be used for playback.

This method must only be called if COMMAND_SET_REPEAT_MODE is available.

Parameters
@Player.RepeatMode repeatMode: Int

The repeat mode.

setShuffleModeEnabled

fun setShuffleModeEnabled(shuffleModeEnabled: Boolean): Unit

Sets whether shuffling of media items is enabled.

This method must only be called if COMMAND_SET_SHUFFLE_MODE is available.

Parameters
shuffleModeEnabled: Boolean

Whether shuffling is enabled.

setTrackSelectionParameters

fun setTrackSelectionParameters(parameters: TrackSelectionParameters!): Unit

Sets the parameters constraining the track selection.

Unsupported parameters will be silently ignored.

Use getTrackSelectionParameters to retrieve the current parameters. For example, the following snippet restricts video to SD whilst keep other track selection parameters unchanged:

player.setTrackSelectionParameters(
  player.getTrackSelectionParameters()
        .buildUpon()
        .setMaxVideoSizeSd()
        .build())

This method must only be called if COMMAND_SET_TRACK_SELECTION_PARAMETERS is available.

setVideoSurface

fun setVideoSurface(surface: Surface?): Unit

Sets the Surface onto which video will be rendered. The caller is responsible for tracking the lifecycle of the surface, and must clear the surface by calling setVideoSurface(null) if the surface is destroyed.

If the surface is held by a SurfaceView, TextureView or then it's recommended to use setVideoSurfaceView, setVideoTextureView or setVideoSurfaceHolder rather than this method, since passing the holder allows the player to track the lifecycle of the surface automatically.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surface: Surface?

The Surface.

setVideoSurfaceHolder

fun setVideoSurfaceHolder(surfaceHolder: SurfaceHolder?): Unit

Sets the SurfaceHolder that holds the Surface onto which video will be rendered. The player will track the lifecycle of the surface automatically.

The thread that calls the SurfaceHolder.Callback methods must be the thread associated with getApplicationLooper.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surfaceHolder: SurfaceHolder?

The surface holder.

setVideoSurfaceView

fun setVideoSurfaceView(surfaceView: SurfaceView?): Unit

Sets the SurfaceView onto which video will be rendered. The player will track the lifecycle of the surface automatically.

The thread that calls the SurfaceHolder.Callback methods must be the thread associated with getApplicationLooper.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
surfaceView: SurfaceView?

The surface view.

setVideoTextureView

fun setVideoTextureView(textureView: TextureView?): Unit

Sets the TextureView onto which video will be rendered. The player will track the lifecycle of the surface automatically.

Consider using SurfaceView via setVideoSurfaceView instead of . SurfaceView generally causes lower battery consumption, and has better handling for HDR and secure content. See Choosing a surface type for more information.

The thread that calls the TextureView.SurfaceTextureListener methods must be the thread associated with getApplicationLooper.

This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
textureView: TextureView?

The texture view.

setVolume

fun setVolume(volume: Float): Unit

Sets the audio volume, valid values are between 0 (silence) and 1 (unity gain, signal unchanged), inclusive.

This method must only be called if COMMAND_SET_VOLUME is available.

Parameters
volume: Float

Linear output gain to apply to all audio channels.

stop

fun stop(): Unit

Stops playback without resetting the playlist. Use pause rather than this method if the intention is to pause playback.

Calling this method will cause the playback state to transition to STATE_IDLE and the player will release the loaded media and resources required for playback. The player instance can still be used by calling prepare again, and release must still be called on the player if it's no longer required.

Calling this method does not clear the playlist, reset the playback position or the playback error.

This method must only be called if COMMAND_STOP is available.

Protected functions

getPlaceholderMediaItemData

@ForOverride
protected fun getPlaceholderMediaItemData(mediaItem: MediaItem!): SimpleBasePlayer.MediaItemData!

Returns the placeholder MediaItemData used for a new MediaItem added to the playlist.

An implementation only needs to override this method if it can determine a more accurate placeholder state than the default.

Parameters
mediaItem: MediaItem!

The MediaItem added to the playlist.

Returns
SimpleBasePlayer.MediaItemData!

The MediaItemData used as placeholder while adding the item to the playlist is in progress.

getPlaceholderState

@ForOverride
protected fun getPlaceholderState(suggestedPlaceholderState: SimpleBasePlayer.State!): SimpleBasePlayer.State!

Returns the placeholder state used while a player method is handled asynchronously.

The suggestedPlaceholderState already contains the most likely state update, for example setting playWhenReady to true if player.setPlayWhenReady(true) is called, and an implementations only needs to override this method if it can determine a more accurate placeholder state.

Parameters
suggestedPlaceholderState: SimpleBasePlayer.State!

The suggested placeholder State, including the most likely outcome of handling all pending asynchronous operations.

Returns
SimpleBasePlayer.State!

The placeholder State to use while asynchronous operations are pending.

handleAddMediaItems

@ForOverride
protected fun handleAddMediaItems(index: Int, mediaItems: (Mutable)List<MediaItem!>!): ListenableFuture<Any!>!

Handles calls to addMediaItem and addMediaItems.

Will only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
index: Int

The index at which to add the items. The index is in the range 0 <= index<= getMediaItemCount.

mediaItems: (Mutable)List<MediaItem!>!

The media items to add.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleClearVideoOutput

@ForOverride
protected fun handleClearVideoOutput(videoOutput: Any?): ListenableFuture<Any!>!

Handles calls to clear the video output.

Will only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
videoOutput: Any?

The video output to clear. If null any current output should be cleared. If non-null, the output should only be cleared if it matches the provided argument. This is either a Surface, SurfaceHolder, TextureView or .

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleDecreaseDeviceVolume

@ForOverride
protected fun handleDecreaseDeviceVolume(@C.VolumeFlags flags: Int): ListenableFuture<Any!>!

Handles calls to decreaseDeviceVolume and decreaseDeviceVolume.

Will only be called if COMMAND_ADJUST_DEVICE_VOLUME or COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleIncreaseDeviceVolume

@ForOverride
protected fun handleIncreaseDeviceVolume(@C.VolumeFlags flags: Int): ListenableFuture<Any!>!

Handles calls to increaseDeviceVolume and increaseDeviceVolume.

Will only be called if COMMAND_ADJUST_DEVICE_VOLUME or COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleMoveMediaItems

@ForOverride
protected fun handleMoveMediaItems(fromIndex: Int, toIndex: Int, newIndex: Int): ListenableFuture<Any!>!

Handles calls to moveMediaItem and moveMediaItems.

Will only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
fromIndex: Int

The start index of the items to move. The index is in the range 0 <= fromIndex<getMediaItemCount.

toIndex: Int

The index of the first item not to be included in the move (exclusive). The index is in the range fromIndex<toIndex<= getMediaItemCount.

newIndex: Int

The new index of the first moved item. The index is in the range 0<= newIndex<- (toIndex - fromIndex).

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handlePrepare

@ForOverride
protected fun handlePrepare(): ListenableFuture<Any!>!

Handles calls to prepare.

Will only be called if COMMAND_PREPARE is available.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleRelease

@ForOverride
protected fun handleRelease(): ListenableFuture<Any!>!

Handles calls to release.

Will only be called if COMMAND_RELEASE is available.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleRemoveMediaItems

@ForOverride
protected fun handleRemoveMediaItems(fromIndex: Int, toIndex: Int): ListenableFuture<Any!>!

Handles calls to removeMediaItem and removeMediaItems.

Will only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
fromIndex: Int

The index at which to start removing media items. The index is in the range 0 <= fromIndex<getMediaItemCount.

toIndex: Int

The index of the first item to be kept (exclusive). The index is in the range fromIndex<toIndex<= getMediaItemCount.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleReplaceMediaItems

@ForOverride
protected fun handleReplaceMediaItems(
    fromIndex: Int,
    toIndex: Int,
    mediaItems: (Mutable)List<MediaItem!>!
): ListenableFuture<Any!>!

Handles calls to replaceMediaItem and replaceMediaItems.

Will only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.

Parameters
fromIndex: Int

The start index of the items to replace. The index is in the range 0 <= fromIndex<getMediaItemCount.

toIndex: Int

The index of the first item not to be replaced (exclusive). The index is in the range fromIndex<toIndex<= getMediaItemCount.

mediaItems: (Mutable)List<MediaItem!>!

The media items to replace the specified range with.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSeek

@ForOverride
protected fun handleSeek(
    mediaItemIndex: Int,
    positionMs: Long,
    @Player.Command seekCommand: Int
): ListenableFuture<Any!>!

Handles calls to seekTo and other seek operations (for example, seekToNext).

Will only be called if the appropriate Player.Command, for example COMMAND_SEEK_TO_MEDIA_ITEM or COMMAND_SEEK_TO_NEXT, is available.

Parameters
mediaItemIndex: Int

The media item index to seek to. If the original seek operation did not directly specify an index, this is the most likely implied index based on the available player state. If the implied action is to do nothing, this will be INDEX_UNSET.

positionMs: Long

The position in milliseconds to start playback from, or TIME_UNSET to start at the default position in the media item. If the original seek operation did not directly specify a position, this is the most likely implied position based on the available player state.

@Player.Command seekCommand: Int

The Player.Command used to trigger the seek.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetAudioAttributes

@ForOverride
protected fun handleSetAudioAttributes(
    audioAttributes: AudioAttributes!,
    handleAudioFocus: Boolean
): ListenableFuture<Any!>!

Handles calls to set the audio attributes.

Will only be called if COMMAND_SET_AUDIO_ATTRIBUTES is available.

Parameters
audioAttributes: AudioAttributes!

The attributes to use for audio playback.

handleAudioFocus: Boolean

True if the player should handle audio focus, false otherwise.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetDeviceMuted

@ForOverride
protected fun handleSetDeviceMuted(muted: Boolean, @C.VolumeFlags flags: Int): ListenableFuture<Any!>!

Handles calls to setDeviceMuted and setDeviceMuted.

Will only be called if COMMAND_ADJUST_DEVICE_VOLUME or COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
muted: Boolean

Whether the device was requested to be muted.

@C.VolumeFlags flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetDeviceVolume

@ForOverride
protected fun handleSetDeviceVolume(deviceVolume: @IntRange(from = 0) Int, flags: Int): ListenableFuture<Any!>!

Handles calls to setDeviceVolume and setDeviceVolume.

Will only be called if COMMAND_SET_DEVICE_VOLUME or COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS is available.

Parameters
deviceVolume: @IntRange(from = 0) Int

The requested device volume.

flags: Int

Either 0 or a bitwise combination of one or more C.VolumeFlags.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetMediaItems

@ForOverride
protected fun handleSetMediaItems(
    mediaItems: (Mutable)List<MediaItem!>!,
    startIndex: Int,
    startPositionMs: Long
): ListenableFuture<Any!>!

Handles calls to setMediaItem and setMediaItems.

Will only be called if COMMAND_SET_MEDIA_ITEM or COMMAND_CHANGE_MEDIA_ITEMS is available. If only COMMAND_SET_MEDIA_ITEM is available, the list of media items will always contain exactly one item.

Parameters
mediaItems: (Mutable)List<MediaItem!>!

The media items to add.

startIndex: Int

The index at which to start playback from, or INDEX_UNSET to start at the default item.

startPositionMs: Long

The position in milliseconds to start playback from, or TIME_UNSET to start at the default position in the media item.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetPlayWhenReady

@ForOverride
protected fun handleSetPlayWhenReady(playWhenReady: Boolean): ListenableFuture<Any!>!

Handles calls to setPlayWhenReady, play and pause.

Will only be called if COMMAND_PLAY_PAUSE is available.

Parameters
playWhenReady: Boolean

The requested playWhenReady

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetPlaybackParameters

@ForOverride
protected fun handleSetPlaybackParameters(playbackParameters: PlaybackParameters!): ListenableFuture<Any!>!

Handles calls to setPlaybackParameters or setPlaybackSpeed.

Will only be called if COMMAND_SET_SPEED_AND_PITCH is available.

Parameters
playbackParameters: PlaybackParameters!

The requested PlaybackParameters.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetPlaylistMetadata

@ForOverride
protected fun handleSetPlaylistMetadata(playlistMetadata: MediaMetadata!): ListenableFuture<Any!>!

Handles calls to setPlaylistMetadata.

Will only be called if COMMAND_SET_PLAYLIST_METADATA is available.

Parameters
playlistMetadata: MediaMetadata!

The requested playlist metadata.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetRepeatMode

@ForOverride
protected fun handleSetRepeatMode(@Player.RepeatMode repeatMode: Int): ListenableFuture<Any!>!

Handles calls to setRepeatMode.

Will only be called if COMMAND_SET_REPEAT_MODE is available.

Parameters
@Player.RepeatMode repeatMode: Int

The requested RepeatMode.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetShuffleModeEnabled

@ForOverride
protected fun handleSetShuffleModeEnabled(shuffleModeEnabled: Boolean): ListenableFuture<Any!>!

Handles calls to setShuffleModeEnabled.

Will only be called if COMMAND_SET_SHUFFLE_MODE is available.

Parameters
shuffleModeEnabled: Boolean

Whether shuffle mode was requested to be enabled.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetTrackSelectionParameters

@ForOverride
protected fun handleSetTrackSelectionParameters(
    trackSelectionParameters: TrackSelectionParameters!
): ListenableFuture<Any!>!

Handles calls to setTrackSelectionParameters.

Will only be called if COMMAND_SET_TRACK_SELECTION_PARAMETERS is available.

Parameters
trackSelectionParameters: TrackSelectionParameters!

The requested TrackSelectionParameters.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetVideoOutput

@ForOverride
protected fun handleSetVideoOutput(videoOutput: Any!): ListenableFuture<Any!>!

Handles calls to set the video output.

Will only be called if COMMAND_SET_VIDEO_SURFACE is available.

Parameters
videoOutput: Any!

The requested video output. This is either a Surface, , TextureView or SurfaceView.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleSetVolume

@ForOverride
protected fun handleSetVolume(volume: @FloatRange(from = 0, to = 1.0) Float): ListenableFuture<Any!>!

Handles calls to setVolume.

Will only be called if COMMAND_SET_VOLUME is available.

Parameters
volume: @FloatRange(from = 0, to = 1.0) Float

The requested audio volume, with 0 being silence and 1 being unity gain (signal unchanged).

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

handleStop

@ForOverride
protected fun handleStop(): ListenableFuture<Any!>!

Handles calls to stop.

Will only be called if COMMAND_STOP is available.

Returns
ListenableFuture<Any!>!

A ListenableFuture indicating the completion of all immediate State changes caused by this call.

invalidateState

protected fun invalidateState(): Unit

Invalidates the current state.

Triggers a call to getState and informs listeners if the state changed.

Note that this may not have an immediate effect while there are still player methods being handled asynchronously. The state will be invalidated automatically once these pending synchronous operations are finished and there is no need to call this method again.

verifyApplicationThread

protected fun verifyApplicationThread(): Unit

Throws an IllegalStateException if the the thread calling this method does not match the Looper thread that was specified upon construction of this instance.

Subclasses can use this method to verify that their own defined methods are also accessed by the correct thread.

Public properties

applicationLooper

val applicationLooperLooper!

Protected properties