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jlp.java

/*
 * 11/19/04       1.0 moved to LGPL.
 * 
 * 06/04/01       Streaming support added. javalayer@javazoom.net
 * 
 * 29/01/00       Initial version. mdm@techie.com
 *-----------------------------------------------------------------------
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as published
 *   by the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------
 */

package javazoom.jl.player;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import javazoom.jl.decoder.JavaLayerException;

/**
 * The <code>jlp</code> class implements a simple command-line
 * player for MPEG audio files.
 *
 * @author Mat McGowan (mdm@techie.com)
 */
00040 public class jlp
{
      private String fFilename = null;
      private boolean remote = false;

      public static void main(String[] args)
      {
            int retval = 0;
            try
            {
                  jlp player = createInstance(args);
                  if (player!=null)
                        player.play();
            }
            catch (Exception ex)
            {
                  System.err.println(ex);
                  ex.printStackTrace(System.err);
                  retval = 1;
            }
            System.exit(retval);
      }

      static public jlp createInstance(String[] args)
      {
            jlp player = new jlp();
            if (!player.parseArgs(args))
                  player = null;
            return player;
      }

      private jlp()
      {
      }

      public jlp(String filename)
      {
            init(filename);
      }

      protected void init(String filename)
      {
            fFilename = filename;
      }

      protected boolean parseArgs(String[] args)
      {
            boolean parsed = false;
            if (args.length == 1)
            {
                  init(args[0]);
                  parsed = true;
                  remote = false;
            }
            else if (args.length == 2)
            {
                  if (!(args[0].equals("-url")))
                  {
                        showUsage();
                  }
                  else
                  {
                        init(args[1]);
                        parsed = true;
                        remote = true;
                  }
            }
            else
            {
                  showUsage();
            }
            return parsed;
      }

      public void showUsage()
      {
            System.out.println("Usage: jlp [-url] <filename>");
            System.out.println("");
            System.out.println(" e.g. : java javazoom.jl.player.jlp localfile.mp3");
            System.out.println("        java javazoom.jl.player.jlp -url http://www.server.com/remotefile.mp3");
            System.out.println("        java javazoom.jl.player.jlp -url http://www.shoutcastserver.com:8000");
      }

      public void play()
            throws JavaLayerException
      {
            try
            {
                  System.out.println("playing "+fFilename+"...");
                  InputStream in = null;
                  if (remote == true) in = getURLInputStream();
                  else in = getInputStream();
                  AudioDevice dev = getAudioDevice();
                  Player player = new Player(in, dev);
                  player.play();
            }
            catch (IOException ex)
            {
                  throw new JavaLayerException("Problem playing file "+fFilename, ex);
            }
            catch (Exception ex)
            {
                  throw new JavaLayerException("Problem playing file "+fFilename, ex);
            }
      }

      /**
       * Playing file from URL (Streaming).
       */
00149       protected InputStream getURLInputStream()
            throws Exception
      {

            URL url = new URL(fFilename);
            InputStream fin = url.openStream();
            BufferedInputStream bin = new BufferedInputStream(fin);
            return bin;
      }

      /**
       * Playing file from FileInputStream.
       */
00162       protected InputStream getInputStream()
            throws IOException
      {
            FileInputStream fin = new FileInputStream(fFilename);
            BufferedInputStream bin = new BufferedInputStream(fin);
            return bin;
      }

      protected AudioDevice getAudioDevice()
            throws JavaLayerException
      {
            return FactoryRegistry.systemRegistry().createAudioDevice();
      }

}

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