/** Creates a new SoundManager with the specified maximum number of simultaneous sounds. */
public SoundManager(AudioFormat playbackFormat, int maxSimultaneousSounds) {
super(Math.min(maxSimultaneousSounds, getMaxSimultaneousSounds(playbackFormat)));
this.playbackFormat = playbackFormat;
localLine = new ThreadLocal();
localBuffer = new ThreadLocal();
pausedLock = new Object();
// notify threads in pool it's ok to start
synchronized (this) {
notifyAll();
}
}
/** バイト列に周波数、ベロシティ指定で波形書き込む */
public void writeWave(byte[] b, double frequency, int velocity) {
double amplitude = sampleRate / frequency; // 波長
for (int i = 0; i < b.length; i++) {
double r = i / amplitude;
int v = (byte) ((Math.round(r) % 2 == 0) ? velocity : -velocity);
v += b[i];
v = Math.min(Math.max(v, -128), 127);
b[i] = (byte) v;
}
// 再生(バイト列をlineに書き込む)
line.write(b, 0, b.length);
}
@Override
public int onAudioData(byte[] data) {
if (audioLine != null && audioLine.isOpen()) {
if (!audioLine.isRunning()) {
audioLine.start();
}
int toWrite = Math.min(audioLine.available(), data.length);
if (toWrite == audioLine.available())
log.trace("full! toWrite: " + toWrite + " instead of: " + data.length);
return audioLine.write(data, 0, toWrite);
} else {
return 0;
}
}
