简易灵巧的录音机

package record;

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.sound.sampled.*;

public class RecordPlay extends Frame {

boolean stopCapture = false ;          //控制录音标志
AudioFormat audioFormat ;             //录音格式

//读取数据: TargetDataLine -> ByteArrayOutputStream
ByteArrayOutputStream byteArrayOutputStream ;
int totaldatasize = 0 ;
TargetDataLine targetDataLine ;      //音频输入设备

//播放数据: 从AudioInputStream 写入 SourceDataLine 播放
AudioInputStream audioInputStream ;
SourceDataLine sourceDataLine ;     //音频输出设备

public RecordPlay(){

//create button
final Button captureB = new Button("record") ;
final Button stopB = new Button("stop") ;
final Button playB = new Button("play") ;
final Button saveB = new Button("save") ;

//启用组件
captureB.setEnabled(true) ;
stopB.setEnabled(true) ;
playB.setEnabled(true) ;
saveB.setEnabled(true) ;

//regist the RecordEvent
captureB.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
captureB.setEnabled(false) ;
stopB.setEnabled(true) ;
playB.setEnabled(false) ;
saveB.setEnabled(false) ;
//start record
capture() ;
}
}) ;
add(captureB) ;

//regist the StopEvent
stopB.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
captureB.setEnabled(true) ;
stopB.setEnabled(false) ;
playB.setEnabled(true) ;
saveB.setEnabled(true) ;
//stop record
stop() ;
}
}) ;
add(stopB) ;

//regist the PlayEvent
playB.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){

//play record
play() ;
}
}) ;
add(playB) ;

//regist the SaveEvent
saveB.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){

//save record
save() ;
}
}) ;
add(saveB) ;

//regist the windowClosingEvent
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0) ;
}
}) ;

//set the window attribute
setLayout(new FlowLayout()) ;
setTitle("录音机") ;
setSize(350,70) ;
setVisible(true) ;

}

//录音事件，保存到ByteArrayOutPutStream
private void capture(){

class CaptureThread extends Thread {

byte []tempBuffer = new byte[10000] ;

public void run(){

byteArrayOutputStream = new ByteArrayOutputStream() ;
totaldatasize = 0 ;
stopCapture = false ;
try{
while(!stopCapture){

int cnt = targetDataLine.read(tempBuffer, 0, tempBuffer.length) ;
if(cnt > 0){
//读取10000个数据
byteArrayOutputStream.write(tempBuffer,0,cnt) ;
totaldatasize += cnt ;
}
}
byteArrayOutputStream.close() ;

}catch(Exception e){
e.printStackTrace() ;
System.exit(0) ;
}
}
}

try{
//open the record
audioFormat = getAudioFormat() ;
//取得输入设备信息
DataLine.Info dataLineInfo = new DataLine.Info(TargetDataLine.class, audioFormat) ;
//取得输入设备
targetDataLine = (TargetDataLine)AudioSystem.getLine(dataLineInfo) ;
//打开输入设备
targetDataLine.open(audioFormat) ;
//启动录音设备
targetDataLine.start() ;

//创建独立线程进行录音
Thread captureThread = new Thread(new CaptureThread()) ;

}catch(Exception e){
e.printStackTrace() ;
}
}

//播放ByteArrayOutputStream中的数据
public void play(){

class PlayThread extends Thread {

byte []tempBuffer = new byte[10000] ;

public void run(){

try{
int cnt ;
//读取数据到缓存区
while((cnt = audioInputStream.read(tempBuffer,0,tempBuffer.length)) != -1){

if(cnt > 0){
//写入(播放)
sourceDataLine.write(tempBuffer, 0, cnt) ;
}
}
//Block等待临时数据被输出为空
sourceDataLine.drain() ;
sourceDataLine.close() ;

}catch(Exception e){
e.printStackTrace() ;
System.exit(0) ;
}
}
}
try{
//取得录音数据
byte audioData[] = byteArrayOutputStream.toByteArray() ;
//转换成输入流
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() ;

//创建独立线程播放
Thread playThread = new Thread(new PlayThread()) ;
playThread.start() ;

} catch(Exception e){
e.printStackTrace() ;
System.exit(0) ;
}
}

//停止录音
public void stop(){
stopCapture = true ;
}

//保存文件
public void save(){
//取得录音输入流
AudioFormat audioFormat = getAudioFormat() ;
byte audioData[] = byteArrayOutputStream.toByteArray() ;
InputStream byteArrayInputStream = new ByteArrayInputStream(audioData) ;
audioInputStream = new AudioInputStream(byteArrayInputStream,audioFormat,audioData.length/audioFormat.getFrameSize()) ;

//写入文件
try{

File file = new File("D:/bianyi/workspace") ;
AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, file) ;

}catch(Exception e){
e.printStackTrace() ;
}
}

//取得AudioFormat
private AudioFormat getAudioFormat(){
float sampleRate = 16000.0f ;
int sampleSizeInBits = 16 ;
int channels = 1 ;
boolean signed = true ;
boolean bigEndian = false ;
return new AudioFormat(sampleRate,sampleSizeInBits,channels,signed,bigEndian) ;
}

public static void main(String[] args) {
// TODO Auto-generated method stub
new RecordPlay() ;
}

}