HDImageBufferDownload.java

/*
 * This file is part of Spoutcraft.
 *
 * Copyright (c) 2011 SpoutcraftDev <http://spoutcraft.org/>
 * Spoutcraft is licensed under the GNU Lesser General Public License.
 *
 * Spoutcraft is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Spoutcraft 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.spoutcraft.client;

import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;

import net.minecraft.src.IImageBuffer;

public class HDImageBufferDownload implements IImageBuffer {
	private int imageData[];
	private int imageWidth;
	private int imageHeight;

	public BufferedImage parseUserSkin(BufferedImage image) {
		if (image == null) {
			return null;
		}

		try {
			imageWidth = Math.max(64, image.getWidth(null));
			imageHeight = imageWidth / 2;
			BufferedImage bufferedimage1 = new BufferedImage(imageWidth, imageHeight, 2);
			Graphics g = bufferedimage1.getGraphics();
			g.drawImage(image, 0, 0, null);
			g.dispose();
			imageData = ((DataBufferInt)bufferedimage1.getRaster().getDataBuffer()).getData();
			func_884_b(0, 0, imageWidth / 2, imageHeight / 2);
			func_885_a(imageWidth / 2, 0, imageWidth, imageHeight);
			func_884_b(0, imageHeight / 2, imageWidth, imageHeight);

			for (int i = 0; i < imageData.length; i++) {
				imageData[i] &= 0xFFFFFF;
			}
		}
		catch (Exception e) {
			return null;
		}

		return image;
	}

	private void func_885_a(int par1, int par2, int par3, int par4) {
		if (func_886_c(par1, par2, par3, par4)) {
			return;
		}

		for (int i = par1; i < par3; i++) {
			for (int j = par2; j < par4; j++) {
				imageData[i + j * imageWidth] &= 0xffffff;
			}
		}
	}

	private void func_884_b(int par1, int par2, int par3, int par4) {
		for (int i = par1; i < par3; i++) {
			for (int j = par2; j < par4; j++) {
				imageData[i + j * imageWidth] |= 0x00000000;
			}
		}
	}

	private boolean func_886_c(int par1, int par2, int par3, int par4) {
		for (int i = par1; i < par3; i++) {
			for (int j = par2; j < par4; j++) {
				int k = imageData[i + j * imageWidth];

				if ((k >> 24 & 0xff) < 128) {
					return true;
				}
			}
		}

		return false;
	}
}