AudioOutput

abstract void addListener(AudioOutput.Listener listener)

Adds a Listener for audio output events.

abstract void attachAuxEffect(int effectId)

Attaches an auxiliary effect to the output.

abstract void flush()

Flushes the audio data from the output.

abstract int getAudioSessionId()

Returns the audio session ID or AUDIO_SESSION_ID_UNSET if unknown.

abstract long getBufferSizeInFrames()

Returns the buffer size in frames of the underlying AudioOutput.

abstract PlaybackParameters getPlaybackParameters()

Returns the playback parameters.

abstract long getPositionUs()

Returns the current playout timestamp in microseconds.

abstract int getSampleRate()

Returns the sample rate of the underlying AudioOutput.

abstract boolean isOffloadedPlayback()

Returns whether this output is playing back in offload mode.

abstract boolean isStalled()

Returns whether the audio output is stalled.

abstract void pause()

Pauses playback.

abstract void play()

Starts or resumes playing audio.

abstract void release()

Releases the AudioOutput.

abstract void removeListener(AudioOutput.Listener listener)

Removes a Listener for audio output events.

abstract void setAuxEffectSendLevel(float level)

Sets the send level for the auxiliary effect.

abstract void setOffloadDelayPadding(int delayInFrames, int paddingInFrames)

Sets the offload delay and padding.

abstract void setOffloadEndOfStream()

Notifies the output that this is the end of the stream.

abstract void setPlaybackParameters(PlaybackParameters playbackParams)

Sets the playback parameters.

abstract void setPlayerId(PlayerId playerId)

Sets the PlayerId on the audio output.

abstract void setPreferredDevice(@Nullable AudioDeviceInfo preferredDevice)

Sets the preferred audio device for routing.

abstract void setVolume(float volume)

Sets the volume of the AudioOutput.

abstract void stop()

Signal that the last buffer has been written and playback should stop after playing out all remaining buffers

abstract boolean write(
    ByteBuffer buffer,
    int encodedAccessUnitCount,
    long presentationTimeUs
)

Writes audio data to the audio output for playback with a presentation timestamp.

The provided buffer must be a direct byte buffer with native byte order. The method is read-only and will not modify the bytes. It processes data from buffer.position() to buffer.limit() (exclusive). Every call will advance buffer.position() to reflect the number of bytes written.

The first time this method is called with a new buffer, the buffer must contain one or more complete encoded access units or complete PCM frames.

If this method returns false, the same buffer must be used for subsequent calls to this method until it has been fully consumed, or until an intervening call to flush.