/** Signals that a PooledThread has started. Creates the Thread's line and buffer. */
protected void threadStarted() {
// wait for the SoundManager constructor to finish
synchronized (this) {
try {
wait();
} catch (InterruptedException ex) {
}
}
// use a short, 100ms (1/10th sec) buffer for filters that
// change in real-time
int bufferSize =
playbackFormat.getFrameSize() * Math.round(playbackFormat.getSampleRate() / 10);
// create, open, and start the line
SourceDataLine line;
DataLine.Info lineInfo = new DataLine.Info(SourceDataLine.class, playbackFormat);
try {
line = (SourceDataLine) AudioSystem.getLine(lineInfo);
line.open(playbackFormat, bufferSize);
} catch (LineUnavailableException ex) {
// the line is unavailable - signal to end this thread
Thread.currentThread().interrupt();
return;
}
line.start();
// create the buffer
byte[] buffer = new byte[bufferSize];
// set this thread's locals
localLine.set(line);
localBuffer.set(buffer);
}
private void sleepUntil(long startTime, long clock) throws InterruptedException {
// convert clock to timestamp in nanos
long targetTime = (NS_PER_CLOCK * clock) + startTime;
long totalTime = targetTime - System.nanoTime();
if (totalTime < 0L) {
return;
}
long millis = totalTime / 1000000L;
long nanos = totalTime % 1000000L;
Thread.sleep(millis, (int) nanos);
}
public void play(int instrument, int note) {
try {
Sequencer player = MidiSystem.getSequencer();
player.open();
Sequence seq = new Sequence(Sequence.PPQ, 4);
Track track = seq.createTrack();
// MidiEvent event = null;
ShortMessage first = new ShortMessage();
first.setMessage(192, 1, instrument, 0);
MidiEvent changeInstrument = new MidiEvent(first, 1);
track.add(changeInstrument);
ShortMessage a = new ShortMessage();
a.setMessage(144, 1, note, 100);
MidiEvent noteOn = new MidiEvent(a, 1);
track.add(noteOn);
ShortMessage b = new ShortMessage();
b.setMessage(128, 1, note, 100);
MidiEvent noteOff = new MidiEvent(b, 16);
track.add(noteOff);
player.setSequence(seq);
player.start();
Thread.sleep(2000);
player.close();
System.exit(0);
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
}
} // close play
public void run() {
try {
if (waitfor != null) waitfor.join();
Resource res = Loading.waitforint(this.res);
try {
seq = MidiSystem.getSequencer(false);
synth = MidiSystem.getSynthesizer();
seq.open();
seq.setSequence(res.layer(Resource.Music.class).seq);
synth.open();
seq.getTransmitter().setReceiver(synth.getReceiver());
} catch (MidiUnavailableException e) {
return;
} catch (InvalidMidiDataException e) {
return;
} catch (IllegalArgumentException e) {
/* The soft synthesizer appears to be throwing
* non-checked exceptions through from the sampled
* audio system. Ignore them and only them. */
if (e.getMessage().startsWith("No line matching")) return;
throw (e);
}
seq.addMetaEventListener(
new MetaEventListener() {
public void meta(MetaMessage msg) {
debug("Meta " + msg.getType());
if (msg.getType() == 47) {
synchronized (Player.this) {
done = true;
Player.this.notifyAll();
}
}
}
});
do {
debug("Start loop");
done = false;
seq.start();
synchronized (this) {
while (!done) this.wait();
}
seq.setTickPosition(0);
} while (loop);
} catch (InterruptedException e) {
} finally {
try {
debug("Exit player");
if (seq != null) seq.close();
try {
if (synth != null) synth.close();
} catch (Throwable e2) {
if (e2 instanceof InterruptedException) {
/* XXX: There appears to be a bug in Sun's
* software MIDI implementation that throws back
* an unchecked InterruptedException here when two
* interrupts come close together (such as in the
* case when the current player is first stopped,
* and then another started immediately afterwards
* on a new song before the first one has had time
* to terminate entirely). */
} else {
throw (new RuntimeException(e2));
}
}
} finally {
synchronized (Music.class) {
if (player == this) player = null;
}
}
}
}
