Saturday, April 18, 2009

Play Audio File using java

import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;

public class AudioPlayer extends Thread {

private static final int EXTERNAL_BUFFER_SIZE = 128000;
private SourceDataLine line = null;
private String strFilename;
boolean play = true;

public AudioPlayer(String strFilename) {
this.strFilename = strFilename;
}

public void startPlaying() {
play = true;
start();
}

public void stopPlaying() {
play = false;
line.drain();
line.close();

}

public void run() {
File soundFile = new File(strFilename);
AudioInputStream audioInputStream = null;
try {
audioInputStream = AudioSystem.getAudioInputStream(soundFile);
} catch (Exception e) {

e.printStackTrace();
System.exit(1);
}
AudioFormat audioFormat = audioInputStream.getFormat();

DataLine.Info info = new DataLine.Info(SourceDataLine.class,
audioFormat);
try {
line = (SourceDataLine) AudioSystem.getLine(info);


line.open(audioFormat);
} catch (LineUnavailableException e) {
e.printStackTrace();
System.exit(1);
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
line.start();
int nBytesRead = 0;
byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
while (nBytesRead != -1 && play) {
try {
nBytesRead = audioInputStream.read(abData, 0, abData.length);
} catch (IOException e) {
e.printStackTrace();
}
if (nBytesRead >= 0) {
int nBytesWritten = line.write(abData, 0, nBytesRead);
}
}
line.drain();
line.close();
}
}

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