ForwardingSimpleBasePlayer

Kotlin |Java

@UnstableApi
public class ForwardingSimpleBasePlayer extends SimpleBasePlayer

java.lang.Object
↳	androidx.media3.common.BasePlayer
	↳	androidx.media3.common.SimpleBasePlayer
		↳	androidx.media3.common.ForwardingSimpleBasePlayer

A SimpleBasePlayer that forwards all calls to another Player instance.

The class can be used to selectively override getState or handle{Action} methods:

new ForwardingSimpleBasePlayer(player) {
  
  protected State getState() {
    State state = super.getState();
    // Modify current state as required:
    return state.buildUpon().setAvailableCommands(filteredCommands).build();
  }

  
  protected ListenableFuture<?> handleSetRepeatMode(int repeatMode) {
    // Modify actions by directly calling the underlying player as needed:
    getPlayer().setShuffleModeEnabled(true);
    // ..or forward to the default handling with modified parameters:
    return super.handleSetRepeatMode(Player.REPEAT_MODE_ALL);
  }
}

This base class handles many aspect of the player implementation to simplify the subclass, for example listener handling. See the documentation of SimpleBasePlayer for a more detailed description.

Summary

Protected fields
`final Player`	`player`

Public constructors
`ForwardingSimpleBasePlayer(Player player)` Creates the forwarding player.

Protected methods
`final Player`	`getPlayer()` Returns the wrapped player.
`SimpleBasePlayer.State`	`getState()` Returns the current `State` of the player.
`ListenableFuture<Object>`	`handleAddMediaItems(int index, List<MediaItem> mediaItems)` Handles calls to addMediaItem and addMediaItems.
`ListenableFuture<Object>`	`handleClearVideoOutput(@Nullable Object videoOutput)` Handles calls to clear the video output.
`ListenableFuture<Object>`	`handleDecreaseDeviceVolume(@C.VolumeFlags int flags)` Handles calls to `decreaseDeviceVolume` and `decreaseDeviceVolume`.
`ListenableFuture<Object>`	`handleIncreaseDeviceVolume(@C.VolumeFlags int flags)` Handles calls to `increaseDeviceVolume` and `increaseDeviceVolume`.
`ListenableFuture<Object>`	`handleMoveMediaItems(int fromIndex, int toIndex, int newIndex)` Handles calls to `moveMediaItem` and `moveMediaItems`.
`ListenableFuture<Object>`	`handlePrepare()` Handles calls to `prepare`.
`ListenableFuture<Object>`	`handleRelease()` Handles calls to `release`.
`ListenableFuture<Object>`	`handleRemoveMediaItems(int fromIndex, int toIndex)` Handles calls to `removeMediaItem` and `removeMediaItems`.
`ListenableFuture<Object>`	`handleReplaceMediaItems( int fromIndex, int toIndex, List<MediaItem> mediaItems )` Handles calls to `replaceMediaItem` and `replaceMediaItems`.
`ListenableFuture<Object>`	`handleSeek( int mediaItemIndex, long positionMs, @Player.Command int seekCommand )` Handles calls to seekTo and other seek operations (for example, `seekToNext`).
`ListenableFuture<Object>`	`handleSetAudioAttributes( AudioAttributes audioAttributes, boolean handleAudioFocus )` Handles calls to set the audio attributes.
`ListenableFuture<Object>`	`handleSetDeviceMuted(boolean muted, @C.VolumeFlags int flags)` Handles calls to `setDeviceMuted` and `setDeviceMuted`.
`ListenableFuture<Object>`	`handleSetDeviceVolume(int deviceVolume, int flags)` Handles calls to `setDeviceVolume` and `setDeviceVolume`.
`ListenableFuture<Object>`	`handleSetMediaItems( List<MediaItem> mediaItems, int startIndex, long startPositionMs )` Handles calls to setMediaItem and setMediaItems.
`ListenableFuture<Object>`	`handleSetPlayWhenReady(boolean playWhenReady)` Handles calls to `setPlayWhenReady`, `play` and `pause`.
`ListenableFuture<Object>`	`handleSetPlaybackParameters(PlaybackParameters playbackParameters)` Handles calls to `setPlaybackParameters` or `setPlaybackSpeed`.
`ListenableFuture<Object>`	`handleSetPlaylistMetadata(MediaMetadata playlistMetadata)` Handles calls to `setPlaylistMetadata`.
`ListenableFuture<Object>`	`handleSetRepeatMode(@Player.RepeatMode int repeatMode)` Handles calls to `setRepeatMode`.
`ListenableFuture<Object>`	`handleSetShuffleModeEnabled(boolean shuffleModeEnabled)` Handles calls to `setShuffleModeEnabled`.
`ListenableFuture<Object>`	`handleSetTrackSelectionParameters( TrackSelectionParameters trackSelectionParameters )` Handles calls to `setTrackSelectionParameters`.
`ListenableFuture<Object>`	`handleSetVideoOutput(Object videoOutput)` Handles calls to set the video output.
`ListenableFuture<Object>`	`handleSetVolume(float volume)` Handles calls to `setVolume`.
`ListenableFuture<Object>`	`handleStop()` Handles calls to `stop`.

Inherited Constants

From androidx.media3.common.Player

`static final int`	`COMMAND_ADJUST_DEVICE_VOLUME = 26` This field is deprecated. Use `COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS` instead.
`static final int`	`COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS = 34` Command to increase and decrease the device volume and mute it with volume flags.
`static final int`	`COMMAND_CHANGE_MEDIA_ITEMS = 20` Command to change the `media items` in the playlist.
`static final int`	`COMMAND_GET_AUDIO_ATTRIBUTES = 21` Command to get the player current `AudioAttributes`.
`static final int`	`COMMAND_GET_CURRENT_MEDIA_ITEM = 16` Command to get information about the currently playing `MediaItem`.
`static final int`	`COMMAND_GET_DEVICE_VOLUME = 23` Command to get the device volume and whether it is muted.
`static final int`	`COMMAND_GET_MEDIA_ITEMS_METADATA = 18` This field is deprecated. Use `COMMAND_GET_METADATA` instead.
`static final int`	`COMMAND_GET_METADATA = 18` Command to get metadata related to the playlist and current `MediaItem`.
`static final int`	`COMMAND_GET_TEXT = 28` Command to get the text that should currently be displayed by the player.
`static final int`	`COMMAND_GET_TIMELINE = 17` Command to get the information about the current timeline.
`static final int`	`COMMAND_GET_TRACKS = 30` Command to get details of the current track selection.
`static final int`	`COMMAND_GET_VOLUME = 22` Command to get the player volume.
`static final int`	`COMMAND_INVALID = -1` Represents an invalid `Command`.
`static final int`	`COMMAND_PLAY_PAUSE = 1` Command to start, pause or resume playback.
`static final int`	`COMMAND_PREPARE = 2` Command to prepare the player.
`static final int`	`COMMAND_RELEASE = 32` Command to release the player.
`static final int`	`COMMAND_SEEK_BACK = 11` Command to seek back by a fixed increment inside the current `MediaItem`.
`static final int`	`COMMAND_SEEK_FORWARD = 12` Command to seek forward by a fixed increment inside the current `MediaItem`.
`static final int`	`COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM = 5` Command to seek anywhere inside the current `MediaItem`.
`static final int`	`@UnstableApi COMMAND_SEEK_IN_CURRENT_WINDOW = 5` This field is deprecated. Use `COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM` instead.
`static final int`	`COMMAND_SEEK_TO_DEFAULT_POSITION = 4` Command to seek to the default position of the current `MediaItem`.
`static final int`	`COMMAND_SEEK_TO_MEDIA_ITEM = 10` Command to seek anywhere in any `MediaItem`.
`static final int`	`COMMAND_SEEK_TO_NEXT = 9` Command to seek to a later position in the current `MediaItem` or the default position of the next `MediaItem`.
`static final int`	`COMMAND_SEEK_TO_NEXT_MEDIA_ITEM = 8` Command to seek to the default position of the next `MediaItem`.
`static final int`	`@UnstableApi COMMAND_SEEK_TO_NEXT_WINDOW = 8` This field is deprecated. Use `COMMAND_SEEK_TO_NEXT_MEDIA_ITEM` instead.
`static final int`	`COMMAND_SEEK_TO_PREVIOUS = 7` Command to seek to an earlier position in the current `MediaItem` or the default position of the previous `MediaItem`.
`static final int`	`COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM = 6` Command to seek to the default position of the previous `MediaItem`.
`static final int`	`@UnstableApi COMMAND_SEEK_TO_PREVIOUS_WINDOW = 6` This field is deprecated. Use `COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM` instead.
`static final int`	`@UnstableApi COMMAND_SEEK_TO_WINDOW = 10` This field is deprecated. Use `COMMAND_SEEK_TO_MEDIA_ITEM` instead.
`static final int`	`COMMAND_SET_AUDIO_ATTRIBUTES = 35` Command to set the player's audio attributes.
`static final int`	`COMMAND_SET_DEVICE_VOLUME = 25` This field is deprecated. Use `COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS` instead.
`static final int`	`COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS = 33` Command to set the device volume with volume flags.
`static final int`	`COMMAND_SET_MEDIA_ITEM = 31` Command to set a `MediaItem`.
`static final int`	`COMMAND_SET_MEDIA_ITEMS_METADATA = 19` This field is deprecated. Use `COMMAND_SET_PLAYLIST_METADATA` instead.
`static final int`	`COMMAND_SET_PLAYLIST_METADATA = 19` Command to set the playlist metadata.
`static final int`	`COMMAND_SET_REPEAT_MODE = 15` Command to set the repeat mode.
`static final int`	`COMMAND_SET_SHUFFLE_MODE = 14` Command to enable shuffling.
`static final int`	`COMMAND_SET_SPEED_AND_PITCH = 13` Command to set the playback speed and pitch.
`static final int`	`COMMAND_SET_TRACK_SELECTION_PARAMETERS = 29` Command to set the player's track selection parameters.
`static final int`	`COMMAND_SET_VIDEO_SURFACE = 27` Command to set and clear the surface on which to render the video.
`static final int`	`COMMAND_SET_VOLUME = 24` Command to set the player volume.
`static final int`	`COMMAND_STOP = 3` Command to stop playback.
`static final int`	`DISCONTINUITY_REASON_AUTO_TRANSITION = 0` Automatic playback transition from one period in the timeline to the next.
`static final int`	`DISCONTINUITY_REASON_INTERNAL = 5` Discontinuity introduced internally (e.g. by the source).
`static final int`	`DISCONTINUITY_REASON_REMOVE = 4` Discontinuity caused by the removal of the current period from the `Timeline`.
`static final int`	`DISCONTINUITY_REASON_SEEK = 1` Seek within the current period or to another period.
`static final int`	`DISCONTINUITY_REASON_SEEK_ADJUSTMENT = 2` Seek adjustment due to being unable to seek to the requested position or because the seek was permitted to be inexact.
`static final int`	`DISCONTINUITY_REASON_SILENCE_SKIP = 6` Discontinuity introduced by a skipped silence.
`static final int`	`DISCONTINUITY_REASON_SKIP = 3` Discontinuity introduced by a skipped period (for instance a skipped ad).
`static final int`	`EVENT_AUDIO_ATTRIBUTES_CHANGED = 20` `getAudioAttributes` changed.
`static final int`	`EVENT_AUDIO_SESSION_ID = 21` The audio session id was set.
`static final int`	`EVENT_AVAILABLE_COMMANDS_CHANGED = 13` `isCommandAvailable` changed for at least one `Command`.
`static final int`	`EVENT_CUES = 27` `getCurrentCues` changed.
`static final int`	`EVENT_DEVICE_INFO_CHANGED = 29` `getDeviceInfo` changed.
`static final int`	`EVENT_DEVICE_VOLUME_CHANGED = 30` `getDeviceVolume` changed.
`static final int`	`EVENT_IS_LOADING_CHANGED = 3` `isLoading` ()} changed.
`static final int`	`EVENT_IS_PLAYING_CHANGED = 7` `isPlaying` changed.
`static final int`	`EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED = 18` `getMaxSeekToPreviousPosition` changed.
`static final int`	`EVENT_MEDIA_ITEM_TRANSITION = 1` `getCurrentMediaItem` changed or the player started repeating the current item.
`static final int`	`EVENT_MEDIA_METADATA_CHANGED = 14` `getMediaMetadata` changed.
`static final int`	`EVENT_METADATA = 28` Metadata associated with the current playback time changed.
`static final int`	`EVENT_PLAYBACK_PARAMETERS_CHANGED = 12` `getPlaybackParameters` changed.
`static final int`	`EVENT_PLAYBACK_STATE_CHANGED = 4` `getPlaybackState` changed.
`static final int`	`EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED = 6` `getPlaybackSuppressionReason` changed.
`static final int`	`EVENT_PLAYER_ERROR = 10` `getPlayerError` changed.
`static final int`	`EVENT_PLAYLIST_METADATA_CHANGED = 15` `getPlaylistMetadata` changed.
`static final int`	`EVENT_PLAY_WHEN_READY_CHANGED = 5` `getPlayWhenReady` changed.
`static final int`	`EVENT_POSITION_DISCONTINUITY = 11` A position discontinuity occurred.
`static final int`	`EVENT_RENDERED_FIRST_FRAME = 26` 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.
`static final int`	`EVENT_REPEAT_MODE_CHANGED = 8` `getRepeatMode` changed.
`static final int`	`EVENT_SEEK_BACK_INCREMENT_CHANGED = 16` `getSeekBackIncrement` changed.
`static final int`	`EVENT_SEEK_FORWARD_INCREMENT_CHANGED = 17` `getSeekForwardIncrement` changed.
`static final int`	`EVENT_SHUFFLE_MODE_ENABLED_CHANGED = 9` `getShuffleModeEnabled` changed.
`static final int`	`EVENT_SKIP_SILENCE_ENABLED_CHANGED = 23` Skipping silences in the audio stream is enabled or disabled.
`static final int`	`EVENT_SURFACE_SIZE_CHANGED = 24` The size of the surface onto which the video is being rendered changed.
`static final int`	`EVENT_TIMELINE_CHANGED = 0` `getCurrentTimeline` changed.
`static final int`	`EVENT_TRACKS_CHANGED = 2` `getCurrentTracks` changed.
`static final int`	`EVENT_TRACK_SELECTION_PARAMETERS_CHANGED = 19` `getTrackSelectionParameters` changed.
`static final int`	`EVENT_VIDEO_SIZE_CHANGED = 25` `getVideoSize` changed.
`static final int`	`EVENT_VOLUME_CHANGED = 22` `getVolume` changed.
`static final int`	`MEDIA_ITEM_TRANSITION_REASON_AUTO = 1` Playback has automatically transitioned to the next media item.
`static final int`	`MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED = 3` The current media item has changed because of a change in the playlist.
`static final int`	`MEDIA_ITEM_TRANSITION_REASON_REPEAT = 0` The media item has been repeated.
`static final int`	`MEDIA_ITEM_TRANSITION_REASON_SEEK = 2` A seek to another media item has occurred.
`static final int`	`PLAYBACK_SUPPRESSION_REASON_NONE = 0` Playback is not suppressed.
`static final int`	`PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS = 1` Playback is suppressed due to transient audio focus loss.
`static final int`	`PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_OUTPUT = 3` 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).
`static final int`	`PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_ROUTE = 2` This field is deprecated. Use `PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_OUTPUT` instead.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY = 3` Playback has been paused to avoid becoming noisy.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS = 2` Playback has been paused because of a loss of audio focus.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM = 5` Playback has been paused at the end of a media item.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_REMOTE = 4` Playback has been started or paused because of a remote change.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_SUPPRESSED_TOO_LONG = 6` Playback has been paused because playback has been `suppressed` too long.
`static final int`	`PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST = 1` Playback has been started or paused by a call to `setPlayWhenReady`.
`static final int`	`REPEAT_MODE_ALL = 2` Repeats the entire timeline infinitely.
`static final int`	`REPEAT_MODE_OFF = 0` Normal playback without repetition.
`static final int`	`REPEAT_MODE_ONE = 1` Repeats the currently playing `MediaItem` infinitely during ongoing playback.
`static final int`	`STATE_BUFFERING = 2` The player is not able to immediately play the media, but is doing work toward being able to do so.
`static final int`	`STATE_ENDED = 4` The player has finished playing the media.
`static final int`	`STATE_IDLE = 1` The player is idle, meaning it holds only limited resources.
`static final int`	`STATE_READY = 3` The player is able to immediately play from its current position.
`static final int`	`TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED = 0` Timeline changed as a result of a change of the playlist items or the order of the items.
`static final int`	`TIMELINE_CHANGE_REASON_SOURCE_UPDATE = 1` Timeline changed as a result of a source update (e.g. result of a dynamic update by the played media).

Inherited fields

From androidx.media3.common.BasePlayer

final Timeline.Window

window

From androidx.media3.common.SimpleBasePlayer

final Looper

applicationLooper

Inherited methods