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 audio.javazoom.jl.player;

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

import audio.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, 100);
			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();
	}

}