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import java.nio.*;
import java.util.*;
import javax.sound.sampled.*;
public class Sounder implements Runnable {
private static final int SAMPLE_SIZE_IN_BITS = 16;
private static final int CHANNELS = 2;
private static final boolean SIGNED = true;
private static final boolean BIG_ENDIAN = true;
private float SAMPLE_RATE;
private AudioFormat AUDIO_FORMAT;
private DataLine.Info LINE_INFO;
private byte[] bytes;
private ByteBuffer buffer;
private short valueLeft;
private short dValueLeft;
private short valueRight;
private short dValueRight;
private SourceDataLine line;
private Random random;
public Sounder() {
random = new Random(System.currentTimeMillis());
SAMPLE_RATE = 44444;
AUDIO_FORMAT = new AudioFormat(SAMPLE_RATE, SAMPLE_SIZE_IN_BITS, CHANNELS, SIGNED, BIG_ENDIAN);
LINE_INFO = new DataLine.Info(SourceDataLine.class, AUDIO_FORMAT);
bytes = new byte[10000];
buffer = ByteBuffer.wrap(bytes, 0, bytes.length);
valueLeft = (short)random.nextInt(1000);
dValueLeft = (short)random.nextInt(100);
valueRight = (short)random.nextInt(1000);
dValueRight = (short)random.nextInt(100);
try {
line = (SourceDataLine)AudioSystem.getLine(LINE_INFO);
line.open();
line.start();
}
catch(Exception e) {
e.printStackTrace();
}
new Thread(this).start();
}
public void next() {
int bs = bytes.length / 2;
int min = random.nextInt(bs / 2);
int max = random.nextInt(bs / 2) + bs / 2;
next(min, max);
}
public void next(int min, int max) {
for (int i = min ; i < max; i++) {
dValueLeft += random.nextInt(7) - 3;
valueLeft += dValueLeft;
if (Math.abs(valueLeft) >= 16380)
dValueLeft = (short)-dValueLeft;
buffer.putShort(i, valueLeft);
dValueRight += random.nextInt(7) - 3;
valueRight += dValueRight;
if (Math.abs(valueRight) >= 16380)
dValueRight = (short)-dValueRight;
buffer.putShort(i + bytes.length / 2, valueRight);
}
line.write(bytes, 0, bytes.length);
}
public void run() {
while (true) {
next();
try {
Thread.sleep(50);
}
catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
System.out.println("Brouillon de fond sonore.");
System.out.println("Appuyez sur Ctrl-C pour terminer le programme.");
for (int i = 0 ; i < 7 ; i++)
new Sounder();
}
} |
