/*
* Copyright (c) 2009-2015 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.texture.plugins.ktx;
import java.io.DataInput;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* reads the pixels of an image whose origin is the top left corner
*
* @author Nehon
*/
public class SrTdRiPixelReader implements PixelReader {
@Override
public int readPixels(int pixelWidth, int pixelHeight, byte[] pixelData, ByteBuffer buffer, DataInput in) throws IOException {
int pixelRead = 0;
for (int row = pixelHeight - 1; row >= 0; row--) {
for (int pixel = 0; pixel < pixelWidth; pixel++) {
in.readFully(pixelData);
for (int i = 0; i < pixelData.length; i++) {
buffer.put((row * pixelWidth + pixel) * pixelData.length + i, pixelData[i]);
}
pixelRead += pixelData.length;
}
}
return pixelRead;
}
}