BaseAudioProcessor

protected AudioProcessor.AudioFormat inputAudioFormat

The current input audio format.

protected AudioProcessor.AudioFormat outputAudioFormat

The current output audio format.

public BaseAudioProcessor()

public final AudioProcessor.AudioFormat configure(AudioProcessor.AudioFormat inputAudioFormat)

Configures the processor to process input audio with the specified format. After calling this method, call isActive to determine whether the audio processor is active. Returns the configured output audio format if this instance is active.

After calling this method, it is necessary to flush the processor to apply the new configuration. Before applying the new configuration, it is safe to queue input and get output in the old input/output formats. Call queueEndOfStream when no more input will be supplied in the old input format.

public final void flush()

Clears any buffered data and pending output. If the audio processor is active, also prepares the audio processor to receive a new stream of input in the last configured (pending) format.

@CallSuper
public ByteBuffer getOutput()

Returns a buffer containing processed output data between its position and limit. The buffer will always be a direct byte buffer with native byte order. Calling this method invalidates any previously returned buffer. The buffer will be empty if no output is available.

@CallSuper
public boolean isActive()

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

@CallSuper
public boolean isEnded()

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

public final void queueEndOfStream()

Queues an end of stream signal. After this method has been called, queueInput may not be called until after the next call to flush. Calling getOutput will return any remaining output data. Multiple calls may be required to read all of the remaining output data. isEnded will return true once all remaining output data has been read.

public final void reset()

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

protected final boolean hasPendingOutput()

Returns whether the current output buffer has any data remaining.

protected AudioProcessor.AudioFormat onConfigure(AudioProcessor.AudioFormat inputAudioFormat)

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

protected void onFlush()

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

protected void onQueueEndOfStream()

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

protected void onReset()

Called when the processor is reset.

protected final ByteBuffer replaceOutputBuffer(int size)

Replaces the current output buffer with a buffer of at least size bytes and returns it. Callers should write to the returned buffer then flip it so it can be read via getOutput.