import javax.swing.*;
import java.io.*;
import javax.sound.sampled.*;
import java.awt.*;
import java.awt.event.*;
public class AudioCapture02 extends JFrame{
boolean stopCapture=false;
ByteArrayOutputStream byteArrayOutputStream;
AudioFormat audioFormat;
TargetDataLine targetDataLine;
AudioInputStream audioInputStream;
SourceDataLine sourceDataLine;
public static void main(String[] args){
new AudioCapture02();
}
public AudioCapture02(){
final JButton captureBtn=new JButton("Capture");
final JButton stopBtn=new JButton("Stop");
final JButton playBtn=new JButton("Playback");
captureBtn.setEnabled(true);
stopBtn.setEnabled(false);
playBtn.setEnabled(false);
captureBtn.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
captureBtn.setEnabled(false);
stopBtn.setEnabled(true);
playBtn.setEnabled(false);
captureAudio();
}
}
);
getContentPane().add(captureBtn);
stopBtn.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
captureBtn.setEnabled(true);
stopBtn.setEnabled(false);
playBtn.setEnabled(true);
stopCapture=true;
}
}
);
getContentPane().add(stopBtn);
playBtn.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
playAudio();
}
}
);
getContentPane().add(playBtn);
getContentPane().setLayout(new FlowLayout());
setTitle("Capture/Playback Demo");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(250,70);
setVisible(true);
}
private void captureAudio(){
try{
Mixer.Info[] mixerInfo=AudioSystem.getMixerInfo();
System.out.println("Available mixers:");
for(int cnt=0;cnt<mixerInfo.length;cnt++){
System.out.println(mixerInfo[cnt].getName());
}
audioFormat=getAudioFormat();
DataLine.Info dataLineInfo=new DataLine.Info(TargetDataLine.class,audioFormat);
Mixer mixer=AudioSystem.getMixer(mixerInfo[3]);
targetDataLine=(TargetDataLine)mixer.getLine(dataLineInfo);
targetDataLine.open(audioFormat);
targetDataLine.start();
Thread captureThread=new CaptureThread();
captureThread.start();
}catch(Exception e){
System.out.println(e);
System.exit(0);
}
}
private void playAudio(){
try{
byte audioData[]=byteArrayOutputStream.toByteArray();
InputStream byteArrayInputStream=new ByteArrayInputStream(audioData);
AudioFormat audioFormat=getAudioFormat();
audioInputStream=new AudioInputStream(byteArrayInputStream,audioFormat,audioData.length/audioFormat.getFrameSize());
DataLine.Info dataLineInfo=new DataLine.Info(SourceDataLine.class,audioFormat);
sourceDataLine=(SourceDataLine)AudioSystem.getLine(dataLineInfo);
sourceDataLine.open(audioFormat);
sourceDataLine.start();
Thread playThread=new PlayThread();
playThread.start();
}catch(Exception e){
System.out.println(e);
System.exit(0);
}
}
private AudioFormat getAudioFormat(){
float sampleRate=8000.0F;
int sampleSizeInBits=16;
int channels=1;
boolean signed=true;
boolean bigEndian=false;
return new AudioFormat(sampleRate,sampleSizeInBits,channels,signed,bigEndian);
}
class CaptureThread extends Thread{
byte tempBuffer[]=new byte[10000];
public void run(){
byteArrayOutputStream=new ByteArrayOutputStream();
stopCapture=false;
try{
while(!stopCapture){
int cnt=targetDataLine.read(tempBuffer,0,tempBuffer.length);
if(cnt>0){
byteArrayOutputStream.write(tempBuffer,0,cnt);
}
}
byteArrayOutputStream.close();
}catch(Exception e){
System.out.println(e);
System.exit(0);
}
}
}
class PlayThread extends Thread{
byte tempBuffer[]=new byte[10000];
public void run(){
try{
int cnt;
while((cnt=audioInputStream.read(tempBuffer,0,tempBuffer.length))!=-1){
if(cnt>0){
sourceDataLine.write(tempBuffer, 0, cnt);
}
}
sourceDataLine.drain();
sourceDataLine.close();
}catch(Exception e){
System.out.println(e);
System.exit(0);
}
}
}
}
