package com.ygames.ysoccer.framework; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.DataInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.List; class PngEditor { private static int[] crcTable = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d }; static ByteArrayInputStream swapPalette(InputStream in, InputStream paletteFile) throws IOException { // copy to byte array ByteArrayOutputStream os = new ByteArrayOutputStream(); byte[] buffer = new byte[16384]; int len; while ((len = in.read(buffer, 0, buffer.length)) != -1) { os.write(buffer, 0, len); } os.flush(); byte[] bytes = os.toByteArray(); // --- READ NEW PALETTE --- int[] palette = new int[256]; try { DataInputStream is = new DataInputStream(paletteFile); BufferedReader br = new BufferedReader(new InputStreamReader(is)); String line; // JASC-PAL br.readLine(); // color depth br.readLine(); // palette size line = br.readLine(); int c = Integer.parseInt(line); // read colors for (int i = 0; i < c; i++) { line = br.readLine(); String[] colors = line.split("[ ]+"); int r = Integer.parseInt(colors[0]); int g = Integer.parseInt(colors[1]); int b = Integer.parseInt(colors[2]); palette[i] = GLColor.rgb(r, g, b); } is.close(); } catch (Exception e) { throw new RuntimeException("Couldn't load palette!", e); } // --- WRITE NEW PALETTE --- int paletteOffset = searchPaletteOffset(bytes); // read data size int dataSize = 0; for (int i = 0; i < 4; i++) { dataSize = 256 * dataSize + (bytes[paletteOffset + i] & 0xFF); } // write new palette for (int i = 0; i < (dataSize / 3); i++) { bytes[paletteOffset + 8 + 3 * i] = (byte) GLColor.red(palette[i]); bytes[paletteOffset + 8 + 3 * i + 1] = (byte) GLColor.green(palette[i]); bytes[paletteOffset + 8 + 3 * i + 2] = (byte) GLColor.blue(palette[i]); } // write new crc int crc32 = getCrc(bytes, paletteOffset + 4, dataSize + 4); for (int i = 0; i < 4; i++) { bytes[paletteOffset + 8 + dataSize + i] = (byte) ((crc32 >> (8 * (3 - i))) & 0xFF); } return new ByteArrayInputStream(bytes); } static ByteArrayInputStream editPalette(InputStream in, List rgbPairs) throws IOException { // copy to byte array ByteArrayOutputStream os = new ByteArrayOutputStream(); byte[] buffer = new byte[16384]; int len; while ((len = in.read(buffer, 0, buffer.length)) != -1) { os.write(buffer, 0, len); } os.flush(); byte[] bytes = os.toByteArray(); // search for the palette 'chunk' int paletteOffset = searchPaletteOffset(bytes); // read data size int dataSize = 0; for (int i = 0; i < 4; i++) { dataSize = 256 * dataSize + (bytes[paletteOffset + i] & 0xFF); } // update colors for (int i = 0; i < (dataSize / 3); i++) { int r = bytes[paletteOffset + 8 + 3 * i] & 0xFF; int g = bytes[paletteOffset + 8 + 3 * i + 1] & 0xFF; int b = bytes[paletteOffset + 8 + 3 * i + 2] & 0xFF; int len2 = rgbPairs.size(); for (int j = 0; j < len2; j++) { int color = GLColor.rgb(r, g, b); RgbPair pair = rgbPairs.get(j); if (color == pair.rgbOld) { bytes[paletteOffset + 8 + 3 * i] = (byte) GLColor.red(pair.rgbNew); bytes[paletteOffset + 8 + 3 * i + 1] = (byte) GLColor.green(pair.rgbNew); bytes[paletteOffset + 8 + 3 * i + 2] = (byte) GLColor.blue(pair.rgbNew); } } } // write new crc int crc32 = getCrc(bytes, paletteOffset + 4, dataSize + 4); for (int i = 0; i < 4; i++) { bytes[paletteOffset + 8 + dataSize + i] = (byte) ((crc32 >> (8 * (3 - i))) & 0xFF); } return new ByteArrayInputStream(bytes); } private static int searchPaletteOffset(byte[] bytes) throws IOException { // search for the palette chunk int i0 = bytes[0] & 0xFF; int i1 = bytes[1] & 0xFF; int i2 = bytes[2] & 0xFF; int i3 = bytes[3] & 0xFF; boolean paletteFound = false; int paletteOffset; for (paletteOffset = 4; paletteOffset < bytes.length; paletteOffset++) { if (i0 == 'P' && i1 == 'L' && i2 == 'T' && i3 == 'E') { paletteFound = true; break; } i0 = i1; i1 = i2; i2 = i3; i3 = bytes[paletteOffset] & 0xFF; } if (!paletteFound) { throw new IOException("Palette not found inside image!"); } paletteOffset -= 8; return paletteOffset; } private static int getCrc(byte[] bytes, int start, int length) { int crc = 0xffffffff; for (int i = start; i < start + length; i++) { byte b = bytes[i]; crc = (crc >>> 8) ^ crcTable[(crc ^ b) & 0xff]; } // flip bits crc = ~crc; return crc; } }