package gui.sonar;
import gui.sonar.mixer.ListenerMixer;
import gui.sonar.sample.SampleLoader;
import gui.sonar.sample.SamplePlayer;
import gui.sonar.sample.SonarSample;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
public class SonarSoundEngine implements Runnable
{
private SonarSample silentSample;
private SourceDataLine sdl;
private int rate = 44100;
private ListenerMixer listenerMixer;
private int bufferSize = rate;// / 100; // 10 ms
private ByteBuffer soundBuffer = ByteBuffer.allocate(bufferSize * 4);
private float[] leftBuf, rightBuf;
private float amplitude = 1;
private float targetAmplitude = 1;
private boolean alive = true;
protected SonarSoundEngine()
{
}
public SonarSoundEngine(int maxChannels) throws LineUnavailableException
{
silentSample = new SonarSample(new float[] {0}, 44100);
Mixer mixer = AudioSystem.getMixer(null);
sdl = (SourceDataLine) mixer.getLine(new Line.Info(SourceDataLine.class));
sdl.open(new AudioFormat(rate, 16, 2, true, false), bufferSize * 2 * 2 * 2 * 2 * 2);
soundBuffer.order(ByteOrder.LITTLE_ENDIAN);
sdl.start();
try
{
/* FloatControl volumeControl = (FloatControl) sdl.getControl(FloatControl.Type.MASTER_GAIN);
volumeControl.setValue(volumeControl.getMaximum());*/
}
catch (IllegalArgumentException e)
{
System.out.println("Failed to set the sound volume");
}
listenerMixer = new ListenerMixer(maxChannels);
leftBuf = new float[bufferSize];
rightBuf = new float[bufferSize];
Thread thread = new Thread(this);
thread.setDaemon(true);
thread.setPriority(10);
thread.start();
}
public void setListener(SoundListener soundListener)
{
listenerMixer.setSoundListener(soundListener);
}
public void shutDown()
{
alive = false;
}
public SonarSample loadSample(String resourceName)
{
try
{
return SampleLoader.loadSample(resourceName);
}
catch (Exception e)
{
System.out.println(e);
System.out.println("Failed to load sample " + resourceName + ". Using silent sample");
e.printStackTrace();
return silentSample;
}
}
public void play(SonarSample sample, SoundSource soundSource, float volume, float priority, float rate)
{
synchronized (listenerMixer)
{
listenerMixer.addSoundProducer(new SamplePlayer((SonarSample) sample, rate), soundSource, volume, priority);
}
}
public void clientTick(float alpha)
{
synchronized (listenerMixer)
{
listenerMixer.update(alpha);
}
}
public void tick()
{
soundBuffer.clear();
// targetAmplitude = (targetAmplitude - 1) * 0.9f + 1;
// targetAmplitude = (targetAmplitude - 1) * 0.9f + 1;
synchronized (listenerMixer)
{
float maxAmplitude = listenerMixer.read(leftBuf, rightBuf, rate);
// if (maxAmplitude > targetAmplitude) targetAmplitude = maxAmplitude;
}
soundBuffer.clear();
float gain = 32000;
for (int i = 0; i < bufferSize; i++)
{
// amplitude += (targetAmplitude - amplitude) / rate;
// amplitude = 1;
// float gain = 30000;
int l = (int) (leftBuf[i] * gain);
int r = (int) (rightBuf[i] * gain);
if (l > 32767) l = 32767;
if (r > 32767) r = 32767;
if (l < -32767) l = -32767;
if (r < -32767) r = -32767;
soundBuffer.putShort((short)l);
soundBuffer.putShort((short)r);
}
sdl.write(soundBuffer.array(), 0, bufferSize * 2 * 2);
}
public void run()
{
while (alive)
{
tick();
}
}
}