下面列出了怎么用javax.sound.sampled.LineListener的API类实例代码及写法，或者点击链接到github查看源代码。
/**
* Plays the clip with the specified volume.
* @param volume the volume the play at
* @param listener the line listener
* @throws LineUnavailableException if a clip object is not available or
* if the line cannot be opened due to resource restrictions
*/
public void start(float volume, LineListener listener) throws LineUnavailableException {
Clip clip = getClip();
if (clip == null)
return;
// PulseAudio does not support Master Gain
if (clip.isControlSupported(FloatControl.Type.MASTER_GAIN)) {
// set volume
FloatControl gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
float dB = (float) (Math.log(volume) / Math.log(10.0) * 20.0);
gainControl.setValue(dB);
}
if (listener != null)
clip.addLineListener(listener);
clip.setFramePosition(0);
clip.start();
}
public final void addLineListener(LineListener listener) {
synchronized(listeners) {
if ( ! (listeners.contains(listener)) ) {
listeners.addElement(listener);
}
}
}
public static SourceDataLine start() throws Exception {
AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
if (addLen) {
staticLen+=(int) (staticLen/5)+1000;
} else {
staticLen-=(int) (staticLen/5)+1000;
}
if (staticLen>8*44100*4) {
staticLen = 8*44100*4;
addLen=!addLen;
}
if (staticLen<1000) {
staticLen = 1000;
addLen=!addLen;
}
int len = staticLen;
len -= (len % 4);
out(" preparing to play back "+len+" bytes == "+bytes2Ms(len, format)+"ms audio...");
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
SourceDataLine sdl = (SourceDataLine) AudioSystem.getLine(info);
sdl.addLineListener(new LineListener() {
public void update(LineEvent e) {
if (e.getType() == LineEvent.Type.STOP) {
out(" calling close() from event dispatcher thread");
((SourceDataLine) e.getSource()).close();
}
else if (e.getType() == LineEvent.Type.CLOSE) {
}
}
});
out(" opening...");
sdl.open();
out(" starting...");
sdl.start();
(new Thread(new SDLLinuxCrash(sdl, len))).start();
return sdl;
}
private void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
public static void play(InputStream in)
{
try
{
AudioInputStream stream = AudioSystem.getAudioInputStream(in);
AudioFormat format = stream.getFormat();
DataLine.Info info = new DataLine.Info(Clip.class, format);
final Clip clip = (Clip)AudioSystem.getLine(info);
clip.addLineListener(new LineListener()
{
public void update(LineEvent ev)
{
LineEvent.Type t = ev.getType();
if(t == LineEvent.Type.STOP)
{
clip.close();
}
}
});
clip.open(stream);
clip.start();
}
catch(Exception e)
{
Log.err(e);
}
}
/**
* Plays a sound clip.
* @param clip the Clip to play
* @param volume the volume [0, 1]
* @param listener the line listener
*/
private static void playClip(MultiClip clip, float volume, LineListener listener) {
if (clip == null) // clip failed to load properly
return;
currentSoundComponent = clip;
if (volume > 0f && !isMuted) {
try {
clip.start(volume, listener);
} catch (LineUnavailableException e) {
softErr(e, "Could not start clip %s", clip.getName());
}
}
}
public final void addLineListener(LineListener listener) {
synchronized(listeners) {
if ( ! (listeners.contains(listener)) ) {
listeners.addElement(listener);
}
}
}
public final void addLineListener(LineListener listener) {
synchronized(listeners) {
if ( ! (listeners.contains(listener)) ) {
listeners.addElement(listener);
}
}
}
public final void addLineListener(LineListener listener) {
synchronized(listeners) {
if ( ! (listeners.contains(listener)) ) {
listeners.addElement(listener);
}
}
}
final void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
private void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
final void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
final void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
private void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
public final void addLineListener(LineListener listener) {
synchronized(listeners) {
if ( ! (listeners.contains(listener)) ) {
listeners.addElement(listener);
}
}
}
private void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
final void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
final void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
public void addLineListener(LineListener listener) {
}
public void removeLineListener(LineListener listener) {
}
/**
* @param ais
* @param lineListener
*/
public AudioPlayer(AudioInputStream ais, LineListener lineListener) {
this.ais = ais;
this.lineListener = lineListener;
}
public final void addLineListener(LineListener listener) {
synchronized (control_mutex) {
listeners.add(listener);
}
}
public void removeLineListener(LineListener listener) {
}
public void removeLineListener(LineListener listener) {
}
public void addLineListener(LineListener listener) {
}
public void removeLineListener(LineListener listener) {
}
static protected void test()
throws LineUnavailableException, InterruptedException {
DataLine.Info info = new DataLine.Info(Clip.class, format);
Clip clip = (Clip)AudioSystem.getLine(info);
final MutableBoolean clipStoppedEvent = new MutableBoolean(false);
clip.addLineListener(new LineListener() {
@Override
public void update(LineEvent event) {
if (event.getType() == LineEvent.Type.STOP) {
synchronized (clipStoppedEvent) {
clipStoppedEvent.value = true;
clipStoppedEvent.notifyAll();
}
}
}
});
clip.open(format, soundData, 0, soundData.length);
long lengthClip = clip.getMicrosecondLength() / 1000;
log("Clip length " + lengthClip + " ms");
log("Playing...");
for (int i=1; i<=LOOP_COUNT; i++) {
long startTime = currentTimeMillis();
log(" Loop " + i);
clip.start();
synchronized (clipStoppedEvent) {
while (!clipStoppedEvent.value) {
clipStoppedEvent.wait();
}
clipStoppedEvent.value = false;
}
long endTime = currentTimeMillis();
long lengthPlayed = endTime - startTime;
if (lengthClip > lengthPlayed + 20) {
log(" ERR: Looks like sound didn't play: played " + lengthPlayed + " ms instead " + lengthClip);
countErrors++;
} else {
log(" OK: played " + lengthPlayed + " ms");
}
clip.setFramePosition(0);
}
log("Played " + LOOP_COUNT + " times, " + countErrors + " errors detected.");
}
public final void removeLineListener(LineListener listener) {
synchronized (control_mutex) {
listeners.add(listener);
}
}
public final void removeLineListener(LineListener listener) {
synchronized (control_mutex) {
listeners.add(listener);
}
}
public void addLineListener(LineListener listener) {
synchronized (control_mutex) {
listeners.add(listener);
}
}