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Code:



 

import javax.sound.sampled.*;

import java.io.*;



public class PCMFilePlayer implements Runnable {

    File file;

    AudioInputStream in;

    SourceDataLine line;

    int frameSize;

    byte[] buffer = new byte [32 * 1024]; // 32k is arbitrary

    Thread playThread;

    boolean playing;

    boolean notYetEOF;



    public PCMFilePlayer (File f)

        throws IOException,

               UnsupportedAudioFileException,

               LineUnavailableException {

        file = f;

        in = AudioSystem.getAudioInputStream (f);

        AudioFormat format = in.getFormat();

        AudioFormat.Encoding formatEncoding = format.getEncoding();

        if (! (formatEncoding.equals (AudioFormat.Encoding.PCM_SIGNED) ||

               formatEncoding.equals (AudioFormat.Encoding.PCM_UNSIGNED)))

            throw new UnsupportedAudioFileException (

                                                     file.getName() + " is not PCM audio");

        System.out.println ("got PCM format");

        frameSize = format.getFrameSize();

        DataLine.Info info =

            new DataLine.Info (SourceDataLine.class, format);

        System.out.println ("got info");

        line = (SourceDataLine) AudioSystem.getLine (info);

        System.out.println ("got line");

        line.open();

        System.out.println ("opened line");

        playThread = new Thread (this);

        playing = false;

        notYetEOF = true;

        playThread.start();

    }



    public void run() {

        int readPoint = 0;

        int bytesRead = 0;



        try {

            while (notYetEOF) {

                if (playing) {

                    bytesRead = in.read (buffer,

                                         readPoint,

                                         buffer.length - readPoint);

                    if (bytesRead == -1) {

                        notYetEOF = false;

                        break;

                    }

                    // how many frames did we get,

                    // and how many are left over?

                    int frames = bytesRead / frameSize;

                    int leftover = bytesRead % frameSize;

                    // send to line

                    line.write (buffer, readPoint, bytesRead-leftover);

                    // save the leftover bytes

                    System.arraycopy (buffer, bytesRead,

                                      buffer, 0,

                                      leftover);

                    readPoint = leftover;



                } else {

                    // if not playing

                    // Thread.yield();

                    try { Thread.sleep (10);}

                    catch (InterruptedException ie) {}

                }

            } // while notYetEOF

            System.out.println ("reached eof");

            line.drain();

            line.stop();

        } catch (IOException ioe) {

            ioe.printStackTrace();

        } finally {

            // line.close();

        }

    } // run





    public void start() {

        playing = true;

        if (! playThread.isAlive())

            playThread.start();

        line.start();

    }



    public void stop() {

        playing = false;

        line.stop();

    }



    public SourceDataLine getLine() {

        return line;

    }



    public File getFile() {

        return file;

    }



}







/*   Swing Hacks

 *   Tips and Tools for Killer GUIs

 * By Joshua Marinacci, Chris Adamson

 *   First Edition June 2005

 *   Series: Hacks

 *   ISBN: 0-596-00907-0

 *   http://www.oreilly.com/catalog/swinghks/

 */