jlp.java :  » Game » 1upmodrcon » javazoom » jl » player » Java Open Source

/*
 * 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)
 */
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).
   */
  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.
   */
  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();
  }

}