AudioSink.Listener

fun onAudioCapabilitiesChanged(): Unit

Called when audio capabilities changed.

fun onAudioSessionIdChanged(audioSessionId: Int): Unit

Called when the audio session ID changed internally.

The audio sink will ignore new externally set audio session IDs until this ID has been acknowledged with setAudioSessionId.

fun onAudioSinkError(audioSinkError: Exception!): Unit

Called when AudioSink has encountered an error.

If the sink writes to a platform AudioTrack, this will called for all AudioTrack errors.

This method being called does not indicate that playback has failed, or that it will fail. The player may be able to recover from the error (for example by recreating the AudioTrack, possibly with different settings) and continue. Hence applications should not implement this method to display a user visible error or initiate an application level retry (onPlayerError is the appropriate place to implement such behavior). This method is called to provide the application with an opportunity to log the error if it wishes to do so.

Fatal errors that cannot be recovered will be reported wrapped in a ExoPlaybackException by onPlayerError.

fun onAudioTrackInitialized(audioTrackConfig: AudioSink.AudioTrackConfig!): Unit

Called when an AudioTrack has been initialized.

fun onAudioTrackReleased(audioTrackConfig: AudioSink.AudioTrackConfig!): Unit

Called when an AudioTrack has been released.

fun onOffloadBufferEmptying(): Unit

Called when the offload buffer has been partially emptied.

fun onOffloadBufferFull(): Unit

Called when the offload buffer has been filled completely.

fun onPositionAdvancing(playoutStartSystemTimeMs: Long): Unit

Called when the audio sink's position has increased for the first time since it was last paused or flushed.

fun onPositionDiscontinuity(): Unit

Called when the audio sink handles a buffer whose timestamp is discontinuous with the last buffer handled since it was reset.

fun onSilenceSkipped(): Unit

Called when a period of silence has been skipped.

fun onSkipSilenceEnabledChanged(skipSilenceEnabled: Boolean): Unit

Called when skipping silences is enabled or disabled.

fun onUnderrun(
    bufferSize: Int,
    bufferSizeMs: Long,
    elapsedSinceLastFeedMs: Long
): Unit

Called when the audio sink runs out of data.

An audio sink implementation may never call this method (for example, if audio data is consumed in batches rather than based on the sink's own clock).