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The INGENIAS Meta-Editor core. It is a set of facilities to generate an editor from a detailed xml description

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package ingenias.editor;
/*
 *	SimpleAudioPlayer.java
 *
 *	This file is part of jsresources.org
 */

/*
 * Copyright (c) 1999 - 2001 by Matthias Pfisterer
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
|<---            this code is formatted to fit into 80 columns             --->|
*/

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;


/**	SimpleAudioPlayer
        Playing an audio file (easy)

        Purpose
        Plays a single audio file.

        Level
        Newbies

        Usage
        
        java SimpleAudioPlayer
        audiofile
        
        

        Parameters
        
        
        
        the name of the
        audio file that should be played
        
        
        

        Bugs, limitations
        Only PCM encoded files are supported. A-law, μ-law,
        ADPCM, ogg vorbis, mp3 and other compressed data formats are
        not supported. For playing these, see
        AudioPlayer.
        

        Source code
        
        SimpleAudioPlayer.java
        
        

*/
public class AudioPlayer
{
        private static final int	EXTERNAL_BUFFER_SIZE = 128000;

       public static void play(String file){
         final String afile=file;
         new Thread(){
           public void run(){
             playAux(afile);
           }
         }.start();
       }


       private static void playAux(String file)
        {

                /*
                  Now, that we're shure there is an argument, we
                  take it as the filename of the soundfile
                  we want to play.
                */
//                String	strFilename = file;
//                getResourceAsStream();)
//                File	soundFile = new File(strFilename);

                /*
                  We have to read in the sound file.
                */
                AudioInputStream	audioInputStream = null;
                try
                {
                        audioInputStream = AudioSystem.getAudioInputStream(new AudioPlayer().getClass().getClassLoader().getResource(file));
                }
                catch (Exception e)
                {
                        /*
                          In case of an exception, we dump the exception
                          including the stack trace to the console output.
                          Then, we exit the program.
                        */
//                        e.printStackTrace();

                }

                /*
                  From the AudioInputStream, i.e. from the sound file,
                  we fetch information about the format of the
                  audio data.
                  These information include the sampling frequency,
                  the number of
                  channels and the size of the samples.
                  These information
                  are needed to ask Java Sound for a suitable output line
                  for this audio file.
                */
                AudioFormat	audioFormat = audioInputStream.getFormat();

                /*
                  Asking for a line is a rather tricky thing.
                  We have to construct an Info object that specifies
                  the desired properties for the line.
                  First, we have to say which kind of line we want. The
                  possibilities are: SourceDataLine (for playback), Clip
                  (for repeated playback)	and TargetDataLine (for
                  recording).
                  Here, we want to do normal playback, so we ask for
                  a SourceDataLine.
                  Then, we have to pass an AudioFormat object, so that
                  the Line knows which format the data passed to it
                  will have.
                  Furthermore, we can give Java Sound a hint about how
                  big the internal buffer for the line should be. This
                  isn't used here, signaling that we
                  don't care about the exact size. Java Sound will use
                  some default value for the buffer size.
                */
                SourceDataLine	line = null;
                DataLine.Info	info = new DataLine.Info(SourceDataLine.class,
                                                         audioFormat);
                try
                {
                        line = (SourceDataLine) AudioSystem.getLine(info);

                        /*
                          The line is there, but it is not yet ready to
                          receive audio data. We have to open the line.
                        */
                        line.open(audioFormat);
                }
                catch (LineUnavailableException e)
                {
                        e.printStackTrace();
                        
                }
                catch (Exception e)
                {
                        e.printStackTrace();
                        
                }

                /*
                  Still not enough. The line now can receive data,
                  but will not pass them on to the audio output device
                  (which means to your sound card). This has to be
                  activated.
                */
                line.start();

                /*
                  Ok, finally the line is prepared. Now comes the real
                  job: we have to write data to the line. We do this
                  in a loop. First, we read data from the
                  AudioInputStream to a buffer. Then, we write from
                  this buffer to the Line. This is done until the end
                  of the file is reached, which is detected by a
                  return value of -1 from the read method of the
                  AudioInputStream.
                */
                int	nBytesRead = 0;
                byte[]	abData = new byte[EXTERNAL_BUFFER_SIZE];
                while (nBytesRead != -1)
                {
                        try
                        {
                                nBytesRead = audioInputStream.read(abData, 0, abData.length);
                        }
                        catch (IOException e)
                        {
                                e.printStackTrace();
                        }
                        if (nBytesRead >= 0)
                        {
                                int	nBytesWritten = line.write(abData, 0, nBytesRead);
                        }
                }

                /*
                  Wait until all data are played.
                  This is only necessary because of the bug noted below.
                  (If we do not wait, we would interrupt the playback by
                  prematurely closing the line and exiting the VM.)

                  Thanks to Margie Fitch for bringing me on the right
                  path to this solution.
                */
                line.drain();

                /*
                  All data are played. We can close the shop.
                */
                line.close();

                /*
                  There is a bug in the jdk1.3/1.4.
                  It prevents correct termination of the VM.
                  So we have to exit ourselves.
                */

        }



        private static void out(String strMessage)
        {
                System.out.println(strMessage);
        }
        
        public static void main(String args[]){
         AudioPlayer ap=new AudioPlayer();
         ap.play(args[0]);
        }
}




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