I want to record audio from sound-card using java. so this is what i got. but it only creats 0 sec wav file. recording didn't work with this code.
How can I do for recording Audio from sound-card? Please help TT
import java.io.IOException;
import java.io.File;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.TargetDataLine;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.AudioFileFormat;
public class SimpleAudioRecorder extends Thread
{
private TargetDataLine m_line;
private AudioFileFormat.Type m_targetType;
private AudioInputStream m_audioInputStream;
private File m_outputFile;
public SimpleAudioRecorder(TargetDataLine line,
AudioFileFormat.Type targetType, File file) {
m_line = line;
m_audioInputStream = new AudioInputStream(line);
m_targetType = targetType;
m_outputFile = file;
}
public void start() {
m_line.start();
super.start();
}
public void stopRecording() {
m_line.stop();
m_line.close();
}
public void run() {
try {
AudioSystem.write(m_audioInputStream, m_targetType, m_outputFile);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String strFilename = "D://wave.wav";
File outputFile = new File(strFilename);
AudioFormat audioFormat = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED, 44100.0F, 16, 2, 4, 44100.0F,
false);
DataLine.Info info = new DataLine.Info(TargetDataLine.class,
audioFormat);
TargetDataLine targetDataLine = null;
try {
targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
targetDataLine.open(audioFormat);
} catch (LineUnavailableException e) {
out("unable to get a recording line");
e.printStackTrace();
System.exit(1);
}
AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
SimpleAudioRecorder recorder = new SimpleAudioRecorder(targetDataLine,
targetType, outputFile);
out("Press ENTER to start the recording.");
try {
System.in.read();
} catch (IOException e) {
e.printStackTrace();
}
recorder.start();
out("Recording...");
out("Press ENTER to stop the recording.");
try {
System.in.read();
} catch (IOException e) {
e.printStackTrace();
}
recorder.stopRecording();
out("Recording stopped.");
}
private static void printUsageAndExit() {
out("SimpleAudioRecorder: usage:");
out("\tjava SimpleAudioRecorder -h");
out("\tjava SimpleAudioRecorder <audiofile>");
System.exit(0);
}
private static void out(String strMessage) {
System.out.println(strMessage);
}
}
I think TargetDataLine method does not have
start()
method it usesread()
method instead.