TeeAudioProcessor


@UnstableApi
public final class TeeAudioProcessor extends BaseAudioProcessor


Audio processor that outputs its input unmodified and also outputs its input to a given sink. This is intended to be used for diagnostics and debugging.

This audio processor can be inserted into the audio processor chain to access audio data before/after particular processing steps have been applied. For example, to get audio output after playback speed adjustment and silence skipping have been applied it is necessary to pass a custom AudioProcessorChain when creating the audio sink, and include this audio processor after all other audio processors.

Summary

Nested types

A sink for audio buffers handled by the audio processor.

A sink for audio buffers that writes output audio as .wav files with a given path prefix.

Public constructors

Creates a new tee audio processor, sending incoming data to the given AudioBufferSink.

Public methods

AudioProcessor.AudioFormat

Called when the processor is configured for a new input format.

void
queueInput(ByteBuffer inputBuffer)

Queues audio data between the position and limit of the inputBuffer for processing.

Protected methods

void

Called when the processor is flushed, directly or as part of resetting.

void

Called when the end-of-stream is queued to the processor.

void

Called when the processor is reset.

Inherited Constants

From androidx.media3.common.audio.AudioProcessor
static final ByteBuffer

An empty, direct ByteBuffer.

Inherited fields

From androidx.media3.common.audio.BaseAudioProcessor
AudioProcessor.AudioFormat

The current input audio format.

AudioProcessor.AudioFormat

The current output audio format.

Inherited methods

From androidx.media3.common.audio.AudioProcessor
long

Returns the expected duration of the output stream when the processor is applied given a input durationUs.

From androidx.media3.common.audio.BaseAudioProcessor
final AudioProcessor.AudioFormat

Configures the processor to process input audio with the specified format.

final void

Clears any buffered data and pending output.

ByteBuffer

Returns a buffer containing processed output data between its position and limit.

final boolean

Returns whether the current output buffer has any data remaining.

boolean

Returns whether the processor is configured and will process input buffers.

boolean

Returns whether this processor will return no more output from getOutput until flush has been called and more input has been queued.

final void

Queues an end of stream signal.

final ByteBuffer

Replaces the current output buffer with a buffer of at least size bytes and returns it.

final void

Resets the processor to its unconfigured state, releasing any resources.

Public constructors

TeeAudioProcessor

public TeeAudioProcessor(TeeAudioProcessor.AudioBufferSink audioBufferSink)

Creates a new tee audio processor, sending incoming data to the given AudioBufferSink.

Parameters
TeeAudioProcessor.AudioBufferSink audioBufferSink

The audio buffer sink that will receive input queued to this audio processor.

Public methods

onConfigure

public AudioProcessor.AudioFormat onConfigure(AudioProcessor.AudioFormat inputAudioFormat)

Called when the processor is configured for a new input format.

queueInput

public void queueInput(ByteBuffer inputBuffer)

Queues audio data between the position and limit of the inputBuffer for processing. After calling this method, processed output may be available via getOutput. Calling queueInput(ByteBuffer) again invalidates any pending output.

Parameters
ByteBuffer inputBuffer

The input buffer to process. It must be a direct byte buffer with native byte order. Its contents are treated as read-only. Its position will be advanced by the number of bytes consumed (which may be zero). The caller retains ownership of the provided buffer.

Protected methods

onFlush

protected void onFlush()

Called when the processor is flushed, directly or as part of resetting.

onQueueEndOfStream

protected void onQueueEndOfStream()

Called when the end-of-stream is queued to the processor.

onReset

protected void onReset()

Called when the processor is reset.