DirectDataBufferByte.java

/**
 * Copyright (c) 2007-2011, JAGaToo Project Group 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.
 * 
 * Neither the name of the 'Xith3D Project Group' nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 * 
 * 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) A
 * RISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE
 */
package org.jagatoo.image;

import java.awt.image.DataBuffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

/**
 * Concrete class which backs a data buffer with a native {@link ByteBuffer}.
 * 
 * @author David Yazel
 * @author Marvin Froehlich (aka Qudus)
 */
public class DirectDataBufferByte extends DataBuffer
{
    private final ByteBuffer bb;
    
    public final ByteBuffer getByteBuffer()
    {
        return ( bb );
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public int getElem( int bank, int i )
    {
        return ( bb.get( i ) & 0xFF );
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public void setElem( int bank, int i, int val )
    {
        bb.put( i, (byte)val );
    }
    
    public DirectDataBufferByte( ByteBuffer bb )
    {
        super( TYPE_BYTE, bb.capacity() );
        
        this.bb = bb;
        //this.bb.limit( bb.capacity() );
        //this.bb.position( 0 );
    }
    
    public DirectDataBufferByte( int size )
    {
        super( TYPE_BYTE, size );
        
        //bb = BufferUtils.createByteBuffer( size );
        bb = ByteBuffer.allocateDirect( size ).order( ByteOrder.nativeOrder() );
        bb.limit( size );
        bb.position( 0 );
    }
}