Sound (audio file) player in java - working source code example

转载自：http://ganeshtiwaridotcomdotnp.blogspot.com/2011/12/sound-audio-file-player-in-java-working.html

Sound (audio file) player in java - working source code example

 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;  
 import javax.sound.sampled.UnsupportedAudioFileException;  
 public class Player implements Runnable {  
      static final int BUF_SIZE = 16384;  
      private AudioInputStream audioInputStream;  
      private AudioFormat format;  
      SourceDataLine line;  
      Thread thread;  
      public Player(AudioInputStream audioInputStream) {  
           this.audioInputStream = audioInputStream;  
           format = audioInputStream.getFormat();  
      }  
      public Player(File wavFile) throws UnsupportedAudioFileException, IOException {  
           this.audioInputStream = AudioSystem.getAudioInputStream(wavFile);  
           format = audioInputStream.getFormat();  
      }  
      public void start() {  
           thread = new Thread(this);  
           thread.setName("Playback");  
           thread.start();  
      }  
      public void stop() {  
           thread = null;  
      }  
      private void shutDown(final String message) {  
           if (thread != null) {  
                thread = null;  
           }  
           System.out.println(message);  
      }  
      @Override  
      public void run() {  
           // make sure we have something to play  
           if (audioInputStream == null) {  
                shutDown("No loaded audio to play back");  
                return;  
           }  
           // get an AudioInputStream of the desired format for playback  
           final AudioInputStream playbackInputStream = AudioSystem.getAudioInputStream(format, audioInputStream);  
           if (playbackInputStream == null) {  
                shutDown("Unable to convert stream of format " + audioInputStream + " to format " + format);  
                return;  
           }  
           line = getSourceDataLineForPlayback();  
           // play back the captured audio data  
           final int frameSizeInBytes = format.getFrameSize();  
           final int bufferLengthInFrames = line.getBufferSize() / 8;  
           final int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;  
           final byte[] audioBuffer = new byte[bufferLengthInBytes];  
           int numBytesRead = 0;  
           // start the source data line  
           line.start();  
           while (thread != null) {  
                try {  
                     if ((numBytesRead = playbackInputStream.read(audioBuffer)) == -1) {  
                          break;  
                     }  
                     int numBytesRemaining = numBytesRead;  
                     while (numBytesRemaining > 0) {  
                          numBytesRemaining -= line.write(audioBuffer, 0, numBytesRemaining);  
                     }  
                } catch (final Exception e) {  
                     shutDown("Error during playback: " + e);  
                     break;  
                }  
           }  
           // stop and close the line.  
           if (thread != null) {  
                line.drain();  
           }  
           line.stop();  
           line.close();  
           line = null;  
           thread = null;  
      }  
      private SourceDataLine getSourceDataLineForPlayback() {  
           SourceDataLine line;  
           final DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);  
           if (!AudioSystem.isLineSupported(info)) {  
                return null;  
           }  
           // get and open the source data line for playback.  
           try {  
                line = (SourceDataLine) AudioSystem.getLine(info);  
                line.open(format, BUF_SIZE);  
           } catch (final LineUnavailableException ex) {  
                return null;  
           }  
           return line;  
      }  
 }  

Testing the wave sound player

 public class Testss {  
      public static void main(String[] args) throws Exception {  
           Player pl = new Player(new File("filename.wav"));  
           pl.start();  
           Thread.sleep(2000);  
      }  
 }