inputstreamsource.java

JLayer is a library that decodes/plays/converts MPEG 1/2/2.5 Layer 1/2/3 (i.e. MP3) in real time fo

/*
 * 11/19/04		1.0 moved to LGPL.
 * 12/12/99		Initial version.	[e-mail]
 *-----------------------------------------------------------------------
 *   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.decoder;

import java.io.IOException;
import java.io.InputStream;

/**
 * <i>Work In Progress.</i>
 * 
 * An instance of <code>InputStreamSource</code> implements a
 * <code>Source</code> that provides data from an <code>InputStream
 * </code>. Seeking functionality is not supported. 
 * 
 * @author MDM
 */
public class InputStreamSource implements Source
{
	private final InputStream		in;
	
	public InputStreamSource(InputStream in)
	{
		if (in==null)
			throw new NullPointerException("in");
		
		this.in = in;		
	}
	
	public int read(byte[] b, int offs, int len)
		throws IOException
	{
		int read = in.read(b, offs, len);
		return read;
	}
	
	public boolean willReadBlock()
	{
		return true;
		//boolean block = (in.available()==0);
		//return block;
	}
	
	public boolean isSeekable()
	{
		return false;	
	}
	
	public long	tell()
	{
		return -1;	
	}
	
	public long	seek(long to)
	{
		return -1;	
	}
	
	public long length()
	{
		return -1;
	}
}