/*
OrpheusMS: MapleStory Private Server based on OdinMS
Copyright (C) 2012 Aaron Weiss <aaron@deviant-core.net>
Patrick Huy <patrick.huy@frz.cc>
Matthias Butz <matze@odinms.de>
Jan Christian Meyer <vimes@odinms.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package provider.wz;
import java.awt.Point;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.Raster;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.util.zip.DataFormatException;
import java.util.zip.Inflater;
import provider.MapleCanvas;
public class PNGMapleCanvas implements MapleCanvas {
private static final int[] ZAHLEN = new int[] {2, 1, 0, 3};
private int height;
private int width;
private int dataLength;
private int format;
private byte[] data;
public PNGMapleCanvas(int width, int height, int dataLength, int format, byte[] data) {
super();
this.height = height;
this.width = width;
this.dataLength = dataLength;
this.format = format;
this.data = data;
}
public int getHeight() {
return height;
}
public int getWidth() {
return width;
}
public int getFormat() {
return format;
}
private byte[] getData() {
return data;
}
@Override
public BufferedImage getImage() {
int sizeUncompressed = 0;
int size8888 = 0;
int maxWriteBuf = 2;
int maxHeight = 3;
byte[] writeBuf = new byte[maxWriteBuf];
@SuppressWarnings("unused")
byte[] rowPointers = new byte[maxHeight];
switch (getFormat()) {
case 1:
case 513:
sizeUncompressed = getHeight() * getWidth() * 4;
break;
case 2:
sizeUncompressed = getHeight() * getWidth() * 8;
break;
case 517:
sizeUncompressed = getHeight() * getWidth() / 128;
break;
}
size8888 = getHeight() * getWidth() * 8;
if (size8888 > maxWriteBuf) {
maxWriteBuf = size8888;
writeBuf = new byte[maxWriteBuf];
}
if (getHeight() > maxHeight) {
maxHeight = getHeight();
rowPointers = new byte[maxHeight];
}
Inflater dec = new Inflater();
dec.setInput(getData(), 0, dataLength);
int declen = 0;
byte[] uc = new byte[sizeUncompressed];
try {
declen = dec.inflate(uc);
} catch (DataFormatException ex) {
throw new RuntimeException("zlib fucks", ex);
}
dec.end();
if (getFormat() == 1) {
for (int i = 0; i < sizeUncompressed; i++) {
byte low = (byte) (uc[i] & 0x0F);
byte high = (byte) (uc[i] & 0xF0);
writeBuf[(i << 1)] = (byte) (((low << 4) | low) & 0xFF);
writeBuf[(i << 1) + 1] = (byte) (high | ((high >>> 4) & 0xF));
}
} else if (getFormat() == 2) {
writeBuf = uc;
} else if (getFormat() == 513) {
for (int i = 0; i < declen; i += 2) {
byte bBits = (byte) ((uc[i] & 0x1F) << 3);
byte gBits = (byte) (((uc[i + 1] & 0x07) << 5) | ((uc[i] & 0xE0) >> 3));
byte rBits = (byte) (uc[i + 1] & 0xF8);
writeBuf[(i << 1)] = (byte) (bBits | (bBits >> 5));
writeBuf[(i << 1) + 1] = (byte) (gBits | (gBits >> 6));
writeBuf[(i << 1) + 2] = (byte) (rBits | (rBits >> 5));
writeBuf[(i << 1) + 3] = (byte) 0xFF;
}
} else if (getFormat() == 517) {
byte b = 0x00;
int pixelIndex = 0;
for (int i = 0; i < declen; i++) {
for (int j = 0; j < 8; j++) {
b = (byte) (((uc[i] & (0x01 << (7 - j))) >> (7 - j)) * 255);
for (int k = 0; k < 16; k++) {
pixelIndex = (i << 9) + (j << 6) + k * 2;
writeBuf[pixelIndex] = b;
writeBuf[pixelIndex + 1] = b;
writeBuf[pixelIndex + 2] = b;
writeBuf[pixelIndex + 3] = (byte) 0xFF;
}
}
}
}
DataBufferByte imgData = new DataBufferByte(writeBuf, sizeUncompressed);
SampleModel sm = new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE, getWidth(), getHeight(), 4, getWidth() * 4, ZAHLEN);
WritableRaster imgRaster = Raster.createWritableRaster(sm, imgData, new Point(0, 0));
BufferedImage aa = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
aa.setData(imgRaster);
return aa;
}
}