private void doPlay(File file) {
AudioInputStream actualAudioIn = null;
this.file = file;
try (AudioInputStream audioIn = AudioSystem.getAudioInputStream(file)) {
AudioFormat baseFormat = audioIn.getFormat();
System.out.println(baseFormat.getEncoding());
AudioFormat decodedFormat = getDecodedFormat(baseFormat);
// make new audio in stream based on decoded format
actualAudioIn = AudioSystem.getAudioInputStream(decodedFormat, audioIn);
// get data from audio system
line = getLine(decodedFormat);
line.addLineListener(this);
doPlay(decodedFormat, actualAudioIn);
audioIn.close();
} catch (Exception e) {
logger.log(Level.WARNING, "Exception playing file '" + file.getName() + "'", e);
} finally {
if (actualAudioIn != null) {
try {
actualAudioIn.close();
} catch (IOException e) {
}
}
if (line != null) line.close();
}
}
public void addLineListener(LineListener listener) {
dataLine.addLineListener(listener);
}
/**
* Single audio channel playback with automatic starting and stopping of the underlying
* sourcedataline specified by the mixer and mixer channel arguments.
*
* <p>Maintains an internal non-blocking audio packet queue and processes this queue 25 times a
* second (every 40 ms).
*
* @param threadPoolManager for assigning buffer processing schedule task
* @param mixer to obtain source data line
* @param mixerChannel either mono or left/right stereo
* @param audioFormat to use during playback
* @param lineInfo to use when obtaining the source data line
* @param requestedBufferSize of approximately 1 second of audio
*/
public AudioOutput(
ThreadPoolManager threadPoolManager,
Mixer mixer,
MixerChannel mixerChannel,
AudioFormat audioFormat,
Line.Info lineInfo,
int requestedBufferSize) {
mThreadPoolManager = threadPoolManager;
mMixer = mixer;
mMixerChannel = mixerChannel;
try {
mOutput = (SourceDataLine) mMixer.getLine(lineInfo);
if (mOutput != null) {
mOutput.open(audioFormat, requestedBufferSize);
// Start threshold: buffer is full with 10% or less of capacity remaining
mBufferStartThreshold = (int) (mOutput.getBufferSize() * 0.10);
// Stop threshold: buffer is empty with 90% or more capacity available
mBufferStopThreshold = (int) (mOutput.getBufferSize() * 0.90);
mOutput.addLineListener(this);
if (mOutput != null) {
try {
Control gain = mOutput.getControl(FloatControl.Type.MASTER_GAIN);
mGainControl = (FloatControl) gain;
} catch (IllegalArgumentException iae) {
mLog.warn(
"Couldn't obtain MASTER GAIN control for stereo line ["
+ mixer.getMixerInfo().getName()
+ " | "
+ getChannelName()
+ "]");
}
try {
Control mute = mOutput.getControl(BooleanControl.Type.MUTE);
mMuteControl = (BooleanControl) mute;
} catch (IllegalArgumentException iae) {
mLog.warn(
"Couldn't obtain MUTE control for stereo line ["
+ mixer.getMixerInfo().getName()
+ " | "
+ getChannelName()
+ "]");
}
/* Run the queue processor task every 40 milliseconds or 25 times a second */
mProcessorTask =
mThreadPoolManager.scheduleFixedRate(
ThreadType.AUDIO_PROCESSING, new BufferProcessor(), 40, TimeUnit.MILLISECONDS);
}
mAudioStartEvent = new AudioEvent(AudioEvent.Type.AUDIO_STARTED, getChannelName());
mAudioStopEvent = new AudioEvent(AudioEvent.Type.AUDIO_STOPPED, getChannelName());
mCanProcessAudio = true;
}
} catch (LineUnavailableException e) {
mLog.error(
"Couldn't obtain audio source data line for "
+ "audio output - mixer ["
+ mMixer.getMixerInfo().getName()
+ "]");
}
}
