Field Detail

• SAMPLE_RATE_NO_CHANGE

  public static final int SAMPLE_RATE_NO_CHANGE

  Indicates that the output sample rate should be the same as the input.

  See Also:

  Constant Field Values

Constructor Detail

• SonicAudioProcessor

  public SonicAudioProcessor()

  Creates a new Sonic audio processor.

Method Detail

• setSpeed

  public void setSpeed​(float speed)

  Sets the target playback speed. This method may only be called after draining data through the processor. The value returned by isActive() may change, and the processor must be flushed before queueing more data.

  Parameters:

  speed - The target factor by which playback should be sped up.

• setPitch

  public void setPitch​(float pitch)

  Sets the target playback pitch. This method may only be called after draining data through the processor. The value returned by isActive() may change, and the processor must be flushed before queueing more data.

  Parameters:

  pitch - The target pitch.

• setOutputSampleRateHz

  public void setOutputSampleRateHz​(int sampleRateHz)

  Sets the sample rate for output audio, in Hertz. Pass SAMPLE_RATE_NO_CHANGE to output audio at the same sample rate as the input. After calling this method, call configure(AudioFormat) to configure the processor with the new sample rate.

  Parameters:

  sampleRateHz - The sample rate for output audio, in Hertz.

  See Also:

  configure(AudioFormat)

• getMediaDuration

  public long getMediaDuration​(long playoutDuration)

  Returns the media duration corresponding to the specified playout duration, taking speed adjustment into account.

  The scaling performed by this method will use the actual playback speed achieved by the audio processor, on average, since it was last flushed. This may differ very slightly from the target playback speed.

  Parameters:

  playoutDuration - The playout duration to scale.

  Returns:

  The corresponding media duration, in the same units as duration.

• configure

  public AudioProcessor.AudioFormat configure​(AudioProcessor.AudioFormat inputAudioFormat)
                                       throws AudioProcessor.UnhandledAudioFormatException

  Description copied from interface: AudioProcessor
  Configures the processor to process input audio with the specified format. After calling this method, call AudioProcessor.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 AudioProcessor.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 AudioProcessor.queueEndOfStream() when no more input will be supplied in the old input format.

  Specified by:

  configure in interface AudioProcessor

  Parameters:

  inputAudioFormat - The format of audio that will be queued after the next call to AudioProcessor.flush().

  Returns:

  The configured output audio format if this instance is active.

  Throws:

  AudioProcessor.UnhandledAudioFormatException - Thrown if the specified format can't be handled as input.

• isActive

  public boolean isActive()

  Description copied from interface: AudioProcessor
  Returns whether the processor is configured and will process input buffers.

  Specified by:

  isActive in interface AudioProcessor

• queueInput

  public void queueInput​(ByteBuffer inputBuffer)

  Description copied from interface: AudioProcessor
  Queues audio data between the position and limit of the input buffer for processing. buffer 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. Calling this method invalidates any previous buffer returned by AudioProcessor.getOutput().

  Specified by:

  queueInput in interface AudioProcessor

  Parameters:

  inputBuffer - The input buffer to process.

• queueEndOfStream

  public void queueEndOfStream()

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

  Specified by:

  queueEndOfStream in interface AudioProcessor

• getOutput

  public ByteBuffer getOutput()

  Description copied from interface: AudioProcessor
  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.

  Specified by:

  getOutput in interface AudioProcessor

  Returns:

  A buffer containing processed output data between its position and limit.

• isEnded

  public boolean isEnded()

  Description copied from interface: AudioProcessor
  Returns whether this processor will return no more output from AudioProcessor.getOutput() until it has been AudioProcessor.flush()ed and more input has been queued.

  Specified by:

  isEnded in interface AudioProcessor

• flush

  public void flush()

  Description copied from interface: AudioProcessor
  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.

  Specified by:

  flush in interface AudioProcessor

• reset

  public void reset()

  Description copied from interface: AudioProcessor
  Resets the processor to its unconfigured state, releasing any resources.

  Specified by:

  reset in interface AudioProcessor