/**
* Checks whether the playback and notification configuration share the same device.
*
* @return are audio out and notifications using the same device.
*/
public boolean audioOutAndNotificationsShareSameDevice() {
AudioSystem audioSystem = getDeviceConfiguration().getAudioSystem();
CaptureDeviceInfo notify = audioSystem.getSelectedDevice(AudioSystem.DataFlow.NOTIFY);
CaptureDeviceInfo playback = audioSystem.getSelectedDevice(AudioSystem.DataFlow.PLAYBACK);
if (notify == null) return (playback == null);
else {
if (playback == null) return false;
else return notify.getLocator().equals(playback.getLocator());
}
}
public boolean load(File file) {
this.file = file;
if (file != null && file.isFile()) {
try {
errStr = null;
audioInputStream = AudioSystem.getAudioInputStream(file);
fileName = file.getName();
format = audioInputStream.getFormat();
} catch (Exception ex) {
reportStatus(ex.toString());
return false;
}
} else {
reportStatus("Audio file required.");
return false;
}
numChannels = format.getChannels();
sampleRate = (double) format.getSampleRate();
sampleBitSize = format.getSampleSizeInBits();
long frameLength = audioInputStream.getFrameLength();
long milliseconds = (long) ((frameLength * 1000) / audioInputStream.getFormat().getFrameRate());
double audioFileDuration = milliseconds / 1000.0;
if (audioFileDuration > MAX_AUDIO_DURATION) duration = MAX_AUDIO_DURATION;
else duration = audioFileDuration;
frameLength = (int) Math.floor((duration / audioFileDuration) * (double) frameLength);
try {
audioBytes = new byte[(int) frameLength * format.getFrameSize()];
audioInputStream.read(audioBytes);
} catch (Exception ex) {
reportStatus(ex.toString());
return false;
}
getAudioData();
return true;
}
public boolean play() {
try {
if (playState != STOPPED) playStop();
if (audioBytes == null) return false;
DataLine.Info info = new DataLine.Info(Clip.class, format);
clip = (Clip) AudioSystem.getLine(info);
clip.addLineListener(new ClipListener());
long clipStart = (long) (audioBytes.length * getStartTime() / (getDuration() * 1000.0));
long clipEnd = (long) (audioBytes.length * getEndTime() / (getDuration() * 1000.0));
if ((clipEnd - clipStart) > MAX_CLIP_LENGTH) clipEnd = clipStart + MAX_CLIP_LENGTH;
byte[] clipBytes = new byte[(int) (clipEnd - clipStart)];
System.arraycopy(audioBytes, (int) clipStart, clipBytes, 0, clipBytes.length);
clip.open(format, clipBytes, 0, clipBytes.length);
FloatControl panControl = (FloatControl) clip.getControl(FloatControl.Type.PAN);
panControl.setValue((float) panSetting / 100.0f);
double value = (double) gainSetting;
FloatControl gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
float dB = (float) (Math.log(value == 0.0 ? 0.0001 : value) / Math.log(10.0) * 20.0);
gainControl.setValue(dB);
double playStartTime = (player.getSeekTime() / 100) * (playGetLength());
clip.setMicrosecondPosition((long) playStartTime);
clip.start();
playState = PLAYING;
return true;
} catch (Exception ex) {
ex.printStackTrace();
playState = STOPPED;
clip = null;
return false;
}
}
/**
* Creates an SCAudioClip from the given URI and adds it to the list of available audio-s.
*
* @param uri the path where the audio file could be found
* @param playback use or not the playback device.
* @return a newly created <tt>SCAudioClip</tt> from <tt>uri</tt>
*/
public SCAudioClip createAudio(String uri, boolean playback) {
SCAudioClip audio;
synchronized (audiosSyncRoot) {
final AudioKey key = new AudioKey(uri, playback);
/*
* While we want to reuse the SCAudioClip instances, they may be
* used by a single user at a time. That's why we'll forget about
* them while they are in use and we'll reclaim them when they are
* no longer in use.
*/
audio = (audios == null) ? null : audios.remove(key);
if (audio == null) {
try {
AudioSystem audioSystem = getDeviceConfiguration().getAudioSystem();
if (audioSystem == null) {
audio = new JavaSoundClipImpl(uri, this);
} else if (NoneAudioSystem.LOCATOR_PROTOCOL.equalsIgnoreCase(
audioSystem.getLocatorProtocol())) {
audio = null;
} else {
audio = new AudioSystemClipImpl(uri, this, audioSystem, playback);
}
} catch (Throwable t) {
if (t instanceof ThreadDeath) throw (ThreadDeath) t;
else {
/*
* Could not initialize a new SCAudioClip instance to be
* played.
*/
return null;
}
}
}
/*
* Make sure that the SCAudioClip will be reclaimed for reuse when
* it is no longer in use.
*/
if (audio != null) {
if (audios == null) audios = new HashMap<AudioKey, SCAudioClip>();
/*
* We have to return in the Map which was active at the time the
* SCAudioClip was initialized because it may have become
* invalid if the playback or notify audio device changed.
*/
final Map<AudioKey, SCAudioClip> finalAudios = audios;
final SCAudioClip finalAudio = audio;
audio =
new SCAudioClip() {
/**
* Evaluates a specific <tt>loopCondition</tt> as defined by {@link
* SCAudioClip#play(int,Callable)}.
*
* @param loopCondition the <tt>Callable<Boolean></tt> which represents the
* <tt>loopCondition</tt> to be evaluated
* @return {@link Boolean#FALSE} if <tt>loopCondition</tt> is <tt>null</tt>;
* otherwise, the value returned by invoking {@link Callable#call()} on the
* specified <tt>loopCondition</tt>
* @throws Exception if the specified <tt>loopCondition</tt> throws an
* <tt>Exception</tt>
*/
private Boolean evaluateLoopCondition(Callable<Boolean> loopCondition)
throws Exception {
/*
* SCAudioClip.play(int,Callable<Boolean>) is
* documented to play the SCAudioClip once only if
* the loopCondition is null. The same will be
* accomplished by returning Boolean.FALSE.
*/
return (loopCondition == null) ? Boolean.FALSE : loopCondition.call();
}
/**
* {@inheritDoc}
*
* <p>Returns the wrapped <tt>SCAudioClip</tt> into the cache from it has earlier been
* retrieved in order to allow its reuse.
*/
@Override
protected void finalize() throws Throwable {
try {
synchronized (audios) {
finalAudios.put(key, finalAudio);
}
} finally {
super.finalize();
}
}
public void play() {
/*
* SCAudioClip.play() is documented to behave as if
* loopInterval is negative and/or loopCondition is
* null. We have to take care that this instance
* does not get garbage collected until the
* finalAudio finishes playing so we will delegate
* to this instance's implementation of
* SCAudioClip.play(int,Callable<Boolean>) instead
* of to the finalAudio's.
*/
play(-1, null);
}
public void play(int loopInterval, final Callable<Boolean> finalLoopCondition) {
/*
* We have to make sure that this instance does not
* get garbage collected before the finalAudio
* finishes playing. The argument loopCondition of
* the method
* SCAudioClip.play(int,Callable<Boolean>) will
* live/be referenced during that time so we will
* use it to hold on to this instance.
*/
Callable<Boolean> loopCondition =
new Callable<Boolean>() {
public Boolean call() throws Exception {
return evaluateLoopCondition(finalLoopCondition);
}
};
finalAudio.play(loopInterval, loopCondition);
}
public void stop() {
finalAudio.stop();
}
/**
* Determines whether this audio is started i.e. a <tt>play</tt> method was invoked
* and no subsequent <tt>stop</tt> has been invoked yet.
*
* @return <tt>true</tt> if this audio is started; otherwise, <tt>false</tt>
*/
public boolean isStarted() {
return finalAudio.isStarted();
}
};
}
}
return audio;
}
