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/*
* $RCSfile$
*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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 Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
* $Revision$
* $Date$
* $State$
*/
package com.sun.j3d.internal;
import javax.media.j3d.J3DBuffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
/**
* NIO Buffers are new in Java 1.4 but we need to run on 1.3
* as well, so this class was created to hide the NIO classes
* from non-1.4 Java 3D users.
*
* <p>
* NOTE: We no longer need to support JDK 1.3 as of the Java 3D 1.3.2
* community source release on java.net. We should be able to get rid
* of this class.
*/
public class ByteBufferWrapper extends BufferWrapper {
private ByteBuffer buffer = null;
/**
* Constructor initializes buffer with a
* java.nio.ByteBuffer object.
*/
public ByteBufferWrapper(ByteBuffer buffer) {
this.buffer = buffer;
}
/**
* Constructor initializes buffer with a
* javax.media.j3d.J3DBuffer object.
*/
public ByteBufferWrapper(J3DBuffer b) {
buffer = (ByteBuffer)(b.getBuffer());
}
/**
* Allocate a direct ByteBuffer with the given capacity.
* @return New ByteBufferWrapper containing the
* new buffer.
*/
public static ByteBufferWrapper allocateDirect(int capacity) {
ByteBuffer bb = ByteBuffer.allocateDirect(capacity);
return new ByteBufferWrapper(bb);
}
/**
* Returns the java.nio.Buffer contained within this
* ByteBufferWrapper.
*/
public java.nio.Buffer getBuffer() {
return this.buffer;
}
// Wrapper for all relevant ByteBuffer methods.
/**
* @return A boolean indicating whether the java.nio.Buffer
* object contained within this ByteBuffer is direct or
* indirect.
*/
public boolean isDirect() {
return buffer.isDirect();
}
/**
* Reads the byte at this buffer's current position,
* and then increments the position.
*/
public byte get() {
return buffer.get();
}
/**
* Reads the byte at the given offset into the buffer.
*/
public byte get(int index) {
return buffer.get(index);
}
/**
* Bulk <i>get</i> method. Transfers <code>dst.length</code>
* bytes from
* the buffer to the destination array and increments the
* buffer's position by <code>dst.length</code>.
*/
public ByteBufferWrapper get(byte[] dst) {
buffer.get(dst);
return this;
}
/**
* Bulk <i>get</i> method. Transfers <i>length</i> bytes
* from the buffer starting at position <i>offset</i> into
* the destination array.
*/
public ByteBufferWrapper get(byte[] dst, int offset, int length) {
buffer.get(dst, offset, length);
return this;
}
/**
* Returns the byte order of this buffer.
*/
public ByteOrderWrapper order() {
if ( buffer.order()==ByteOrder.BIG_ENDIAN ) return ByteOrderWrapper.BIG_ENDIAN;
else return ByteOrderWrapper.LITTLE_ENDIAN;
}
/**
* Modifies this buffer's byte order.
*/
public ByteBufferWrapper order(ByteOrderWrapper bo)
{
if ( bo == ByteOrderWrapper.BIG_ENDIAN ) buffer.order( ByteOrder.BIG_ENDIAN );
else buffer.order( ByteOrder.LITTLE_ENDIAN );
return this;
}
/**
* Creates a view of this ByteBufferWrapper as a
* FloatBufferWrapper. Uses the correct
*/
public FloatBufferWrapper asFloatBuffer() {
return new FloatBufferWrapper( buffer.asFloatBuffer() );
}
/**
* Creates a view of this ByteBufferWrapper as a
* DoubleBufferWrapper.
*/
public DoubleBufferWrapper asDoubleBuffer() {
return new DoubleBufferWrapper( buffer.asDoubleBuffer() );
}
/**
* Bulk <i>put</i> method. Transfers <code>src.length</code>
* bytes into the buffer at the current position.
*/
public ByteBufferWrapper put(byte[] src) {
buffer.put(src);
return this;
}
/**
* Creates and returns a J3DBuffer object containing the
* buffer in this ByteBufferWrapper object.
*/
public J3DBuffer getJ3DBuffer() {
return new J3DBuffer( buffer );
}
}
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