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);
      }
 }