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/*
* Copyright (c) 2009-2012 jMonkeyEngine
* 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 'jMonkeyEngine' 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) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.texture.image;
import java.nio.ByteBuffer;
public class ByteOffsetImageCodec extends ImageCodec {
private final int redPos, greenPos, bluePos, alphaPos;
public ByteOffsetImageCodec(int bpp, int flags, int alphaPos, int redPos, int greenPos, int bluePos) {
super(bpp, flags, alphaPos != -1 ? 255 : 0,
redPos != -1 ? 255 : 0,
greenPos != -1 ? 255 : 0,
bluePos != -1 ? 255 : 0);
this.alphaPos = alphaPos;
this.redPos = redPos;
this.greenPos = greenPos;
this.bluePos = bluePos;
}
@Override
public void readComponents(ByteBuffer buf, int x, int y, int width, int offset, int[] components, byte[] tmp) {
int i = (y * width + x) * bpp + offset;
buf.position(i);
buf.get(tmp, 0, bpp);
if (alphaPos != -1) {
components[0] = tmp[alphaPos] & 0xff;
}
if (redPos != -1) {
components[1] = tmp[redPos] & 0xff;
}
if (greenPos != -1) {
components[2] = tmp[greenPos] & 0xff;
}
if (bluePos != -1) {
components[3] = tmp[bluePos] & 0xff;
}
}
@Override
public void writeComponents(ByteBuffer buf, int x, int y, int width, int offset, int[] components, byte[] tmp) {
int i = (y * width + x) * bpp + offset;
if (alphaPos != -1) {
tmp[alphaPos] = (byte) components[0];
}
if (redPos != -1) {
tmp[redPos] = (byte) components[1];
}
if (greenPos != -1) {
tmp[greenPos] = (byte) components[2];
}
if (bluePos != -1) {
tmp[bluePos] = (byte) components[3];
}
buf.position(i);
buf.put(tmp, 0, bpp);
}
}
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