📄 ccittg4encoder.java
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private static int finddiff(byte[] bp, int offset, int bs, int be, int color) {
return bs + (color != 0 ? find1span(bp, offset, bs, be) : find0span(bp, offset, bs, be));
}
private static int finddiff2(byte[] bp, int offset, int bs, int be, int color) {
return bs < be ? finddiff(bp, offset, bs, be, color) : be;
}
private static byte zeroruns[] = {
8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, /* 0x00 - 0x0f */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x10 - 0x1f */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x20 - 0x2f */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x30 - 0x3f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 - 0x4f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x50 - 0x5f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 - 0x6f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x70 - 0x7f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 - 0xaf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 - 0xbf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 - 0xcf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 - 0xdf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 - 0xef */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xf0 - 0xff */
};
private static byte oneruns[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 - 0x0f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 - 0x1f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 - 0x2f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30 - 0x3f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 - 0x4f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 - 0x5f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x60 - 0x6f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 - 0x7f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x80 - 0x8f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x90 - 0x9f */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xa0 - 0xaf */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xb0 - 0xbf */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xc0 - 0xcf */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xd0 - 0xdf */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xe0 - 0xef */
4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8 /* 0xf0 - 0xff */
};
private static final int LENGTH = 0; /* bit length of g3 code */
private static final int CODE = 1; /* g3 code */
private static final int RUNLEN = 2; /* run length in bits */
private static final int EOL = 0x001; /* EOL code value - 0000 0000 0000 1 */
/* status values returned instead of a run length */
private static final int G3CODE_EOL = -1; /* NB: ACT_EOL - ACT_WRUNT */
private static final int G3CODE_INVALID = -2; /* NB: ACT_INVALID - ACT_WRUNT */
private static final int G3CODE_EOF = -3; /* end of input data */
private static final int G3CODE_INCOMP = -4; /* incomplete run code */
private int[][] TIFFFaxWhiteCodes = {
{ 8, 0x35, 0 }, /* 0011 0101 */
{ 6, 0x7, 1 }, /* 0001 11 */
{ 4, 0x7, 2 }, /* 0111 */
{ 4, 0x8, 3 }, /* 1000 */
{ 4, 0xB, 4 }, /* 1011 */
{ 4, 0xC, 5 }, /* 1100 */
{ 4, 0xE, 6 }, /* 1110 */
{ 4, 0xF, 7 }, /* 1111 */
{ 5, 0x13, 8 }, /* 1001 1 */
{ 5, 0x14, 9 }, /* 1010 0 */
{ 5, 0x7, 10 }, /* 0011 1 */
{ 5, 0x8, 11 }, /* 0100 0 */
{ 6, 0x8, 12 }, /* 0010 00 */
{ 6, 0x3, 13 }, /* 0000 11 */
{ 6, 0x34, 14 }, /* 1101 00 */
{ 6, 0x35, 15 }, /* 1101 01 */
{ 6, 0x2A, 16 }, /* 1010 10 */
{ 6, 0x2B, 17 }, /* 1010 11 */
{ 7, 0x27, 18 }, /* 0100 111 */
{ 7, 0xC, 19 }, /* 0001 100 */
{ 7, 0x8, 20 }, /* 0001 000 */
{ 7, 0x17, 21 }, /* 0010 111 */
{ 7, 0x3, 22 }, /* 0000 011 */
{ 7, 0x4, 23 }, /* 0000 100 */
{ 7, 0x28, 24 }, /* 0101 000 */
{ 7, 0x2B, 25 }, /* 0101 011 */
{ 7, 0x13, 26 }, /* 0010 011 */
{ 7, 0x24, 27 }, /* 0100 100 */
{ 7, 0x18, 28 }, /* 0011 000 */
{ 8, 0x2, 29 }, /* 0000 0010 */
{ 8, 0x3, 30 }, /* 0000 0011 */
{ 8, 0x1A, 31 }, /* 0001 1010 */
{ 8, 0x1B, 32 }, /* 0001 1011 */
{ 8, 0x12, 33 }, /* 0001 0010 */
{ 8, 0x13, 34 }, /* 0001 0011 */
{ 8, 0x14, 35 }, /* 0001 0100 */
{ 8, 0x15, 36 }, /* 0001 0101 */
{ 8, 0x16, 37 }, /* 0001 0110 */
{ 8, 0x17, 38 }, /* 0001 0111 */
{ 8, 0x28, 39 }, /* 0010 1000 */
{ 8, 0x29, 40 }, /* 0010 1001 */
{ 8, 0x2A, 41 }, /* 0010 1010 */
{ 8, 0x2B, 42 }, /* 0010 1011 */
{ 8, 0x2C, 43 }, /* 0010 1100 */
{ 8, 0x2D, 44 }, /* 0010 1101 */
{ 8, 0x4, 45 }, /* 0000 0100 */
{ 8, 0x5, 46 }, /* 0000 0101 */
{ 8, 0xA, 47 }, /* 0000 1010 */
{ 8, 0xB, 48 }, /* 0000 1011 */
{ 8, 0x52, 49 }, /* 0101 0010 */
{ 8, 0x53, 50 }, /* 0101 0011 */
{ 8, 0x54, 51 }, /* 0101 0100 */
{ 8, 0x55, 52 }, /* 0101 0101 */
{ 8, 0x24, 53 }, /* 0010 0100 */
{ 8, 0x25, 54 }, /* 0010 0101 */
{ 8, 0x58, 55 }, /* 0101 1000 */
{ 8, 0x59, 56 }, /* 0101 1001 */
{ 8, 0x5A, 57 }, /* 0101 1010 */
{ 8, 0x5B, 58 }, /* 0101 1011 */
{ 8, 0x4A, 59 }, /* 0100 1010 */
{ 8, 0x4B, 60 }, /* 0100 1011 */
{ 8, 0x32, 61 }, /* 0011 0010 */
{ 8, 0x33, 62 }, /* 0011 0011 */
{ 8, 0x34, 63 }, /* 0011 0100 */
{ 5, 0x1B, 64 }, /* 1101 1 */
{ 5, 0x12, 128 }, /* 1001 0 */
{ 6, 0x17, 192 }, /* 0101 11 */
{ 7, 0x37, 256 }, /* 0110 111 */
{ 8, 0x36, 320 }, /* 0011 0110 */
{ 8, 0x37, 384 }, /* 0011 0111 */
{ 8, 0x64, 448 }, /* 0110 0100 */
{ 8, 0x65, 512 }, /* 0110 0101 */
{ 8, 0x68, 576 }, /* 0110 1000 */
{ 8, 0x67, 640 }, /* 0110 0111 */
{ 9, 0xCC, 704 }, /* 0110 0110 0 */
{ 9, 0xCD, 768 }, /* 0110 0110 1 */
{ 9, 0xD2, 832 }, /* 0110 1001 0 */
{ 9, 0xD3, 896 }, /* 0110 1001 1 */
{ 9, 0xD4, 960 }, /* 0110 1010 0 */
{ 9, 0xD5, 1024 }, /* 0110 1010 1 */
{ 9, 0xD6, 1088 }, /* 0110 1011 0 */
{ 9, 0xD7, 1152 }, /* 0110 1011 1 */
{ 9, 0xD8, 1216 }, /* 0110 1100 0 */
{ 9, 0xD9, 1280 }, /* 0110 1100 1 */
{ 9, 0xDA, 1344 }, /* 0110 1101 0 */
{ 9, 0xDB, 1408 }, /* 0110 1101 1 */
{ 9, 0x98, 1472 }, /* 0100 1100 0 */
{ 9, 0x99, 1536 }, /* 0100 1100 1 */
{ 9, 0x9A, 1600 }, /* 0100 1101 0 */
{ 6, 0x18, 1664 }, /* 0110 00 */
{ 9, 0x9B, 1728 }, /* 0100 1101 1 */
{ 11, 0x8, 1792 }, /* 0000 0001 000 */
{ 11, 0xC, 1856 }, /* 0000 0001 100 */
{ 11, 0xD, 1920 }, /* 0000 0001 101 */
{ 12, 0x12, 1984 }, /* 0000 0001 0010 */
{ 12, 0x13, 2048 }, /* 0000 0001 0011 */
{ 12, 0x14, 2112 }, /* 0000 0001 0100 */
{ 12, 0x15, 2176 }, /* 0000 0001 0101 */
{ 12, 0x16, 2240 }, /* 0000 0001 0110 */
{ 12, 0x17, 2304 }, /* 0000 0001 0111 */
{ 12, 0x1C, 2368 }, /* 0000 0001 1100 */
{ 12, 0x1D, 2432 }, /* 0000 0001 1101 */
{ 12, 0x1E, 2496 }, /* 0000 0001 1110 */
{ 12, 0x1F, 2560 }, /* 0000 0001 1111 */
{ 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */
{ 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */
{ 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */
{ 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */
{ 12, 0x0, G3CODE_INVALID } /* 0000 0000 0000 */
};
private int[][] TIFFFaxBlackCodes = {
{ 10, 0x37, 0 }, /* 0000 1101 11 */
{ 3, 0x2, 1 }, /* 010 */
{ 2, 0x3, 2 }, /* 11 */
{ 2, 0x2, 3 }, /* 10 */
{ 3, 0x3, 4 }, /* 011 */
{ 4, 0x3, 5 }, /* 0011 */
{ 4, 0x2, 6 }, /* 0010 */
{ 5, 0x3, 7 }, /* 0001 1 */
{ 6, 0x5, 8 }, /* 0001 01 */
{ 6, 0x4, 9 }, /* 0001 00 */
{ 7, 0x4, 10 }, /* 0000 100 */
{ 7, 0x5, 11 }, /* 0000 101 */
{ 7, 0x7, 12 }, /* 0000 111 */
{ 8, 0x4, 13 }, /* 0000 0100 */
{ 8, 0x7, 14 }, /* 0000 0111 */
{ 9, 0x18, 15 }, /* 0000 1100 0 */
{ 10, 0x17, 16 }, /* 0000 0101 11 */
{ 10, 0x18, 17 }, /* 0000 0110 00 */
{ 10, 0x8, 18 }, /* 0000 0010 00 */
{ 11, 0x67, 19 }, /* 0000 1100 111 */
{ 11, 0x68, 20 }, /* 0000 1101 000 */
{ 11, 0x6C, 21 }, /* 0000 1101 100 */
{ 11, 0x37, 22 }, /* 0000 0110 111 */
{ 11, 0x28, 23 }, /* 0000 0101 000 */
{ 11, 0x17, 24 }, /* 0000 0010 111 */
{ 11, 0x18, 25 }, /* 0000 0011 000 */
{ 12, 0xCA, 26 }, /* 0000 1100 1010 */
{ 12, 0xCB, 27 }, /* 0000 1100 1011 */
{ 12, 0xCC, 28 }, /* 0000 1100 1100 */
{ 12, 0xCD, 29 }, /* 0000 1100 1101 */
{ 12, 0x68, 30 }, /* 0000 0110 1000 */
{ 12, 0x69, 31 }, /* 0000 0110 1001 */
{ 12, 0x6A, 32 }, /* 0000 0110 1010 */
{ 12, 0x6B, 33 }, /* 0000 0110 1011 */
{ 12, 0xD2, 34 }, /* 0000 1101 0010 */
{ 12, 0xD3, 35 }, /* 0000 1101 0011 */
{ 12, 0xD4, 36 }, /* 0000 1101 0100 */
{ 12, 0xD5, 37 }, /* 0000 1101 0101 */
{ 12, 0xD6, 38 }, /* 0000 1101 0110 */
{ 12, 0xD7, 39 }, /* 0000 1101 0111 */
{ 12, 0x6C, 40 }, /* 0000 0110 1100 */
{ 12, 0x6D, 41 }, /* 0000 0110 1101 */
{ 12, 0xDA, 42 }, /* 0000 1101 1010 */
{ 12, 0xDB, 43 }, /* 0000 1101 1011 */
{ 12, 0x54, 44 }, /* 0000 0101 0100 */
{ 12, 0x55, 45 }, /* 0000 0101 0101 */
{ 12, 0x56, 46 }, /* 0000 0101 0110 */
{ 12, 0x57, 47 }, /* 0000 0101 0111 */
{ 12, 0x64, 48 }, /* 0000 0110 0100 */
{ 12, 0x65, 49 }, /* 0000 0110 0101 */
{ 12, 0x52, 50 }, /* 0000 0101 0010 */
{ 12, 0x53, 51 }, /* 0000 0101 0011 */
{ 12, 0x24, 52 }, /* 0000 0010 0100 */
{ 12, 0x37, 53 }, /* 0000 0011 0111 */
{ 12, 0x38, 54 }, /* 0000 0011 1000 */
{ 12, 0x27, 55 }, /* 0000 0010 0111 */
{ 12, 0x28, 56 }, /* 0000 0010 1000 */
{ 12, 0x58, 57 }, /* 0000 0101 1000 */
{ 12, 0x59, 58 }, /* 0000 0101 1001 */
{ 12, 0x2B, 59 }, /* 0000 0010 1011 */
{ 12, 0x2C, 60 }, /* 0000 0010 1100 */
{ 12, 0x5A, 61 }, /* 0000 0101 1010 */
{ 12, 0x66, 62 }, /* 0000 0110 0110 */
{ 12, 0x67, 63 }, /* 0000 0110 0111 */
{ 10, 0xF, 64 }, /* 0000 0011 11 */
{ 12, 0xC8, 128 }, /* 0000 1100 1000 */
{ 12, 0xC9, 192 }, /* 0000 1100 1001 */
{ 12, 0x5B, 256 }, /* 0000 0101 1011 */
{ 12, 0x33, 320 }, /* 0000 0011 0011 */
{ 12, 0x34, 384 }, /* 0000 0011 0100 */
{ 12, 0x35, 448 }, /* 0000 0011 0101 */
{ 13, 0x6C, 512 }, /* 0000 0011 0110 0 */
{ 13, 0x6D, 576 }, /* 0000 0011 0110 1 */
{ 13, 0x4A, 640 }, /* 0000 0010 0101 0 */
{ 13, 0x4B, 704 }, /* 0000 0010 0101 1 */
{ 13, 0x4C, 768 }, /* 0000 0010 0110 0 */
{ 13, 0x4D, 832 }, /* 0000 0010 0110 1 */
{ 13, 0x72, 896 }, /* 0000 0011 1001 0 */
{ 13, 0x73, 960 }, /* 0000 0011 1001 1 */
{ 13, 0x74, 1024 }, /* 0000 0011 1010 0 */
{ 13, 0x75, 1088 }, /* 0000 0011 1010 1 */
{ 13, 0x76, 1152 }, /* 0000 0011 1011 0 */
{ 13, 0x77, 1216 }, /* 0000 0011 1011 1 */
{ 13, 0x52, 1280 }, /* 0000 0010 1001 0 */
{ 13, 0x53, 1344 }, /* 0000 0010 1001 1 */
{ 13, 0x54, 1408 }, /* 0000 0010 1010 0 */
{ 13, 0x55, 1472 }, /* 0000 0010 1010 1 */
{ 13, 0x5A, 1536 }, /* 0000 0010 1101 0 */
{ 13, 0x5B, 1600 }, /* 0000 0010 1101 1 */
{ 13, 0x64, 1664 }, /* 0000 0011 0010 0 */
{ 13, 0x65, 1728 }, /* 0000 0011 0010 1 */
{ 11, 0x8, 1792 }, /* 0000 0001 000 */
{ 11, 0xC, 1856 }, /* 0000 0001 100 */
{ 11, 0xD, 1920 }, /* 0000 0001 101 */
{ 12, 0x12, 1984 }, /* 0000 0001 0010 */
{ 12, 0x13, 2048 }, /* 0000 0001 0011 */
{ 12, 0x14, 2112 }, /* 0000 0001 0100 */
{ 12, 0x15, 2176 }, /* 0000 0001 0101 */
{ 12, 0x16, 2240 }, /* 0000 0001 0110 */
{ 12, 0x17, 2304 }, /* 0000 0001 0111 */
{ 12, 0x1C, 2368 }, /* 0000 0001 1100 */
{ 12, 0x1D, 2432 }, /* 0000 0001 1101 */
{ 12, 0x1E, 2496 }, /* 0000 0001 1110 */
{ 12, 0x1F, 2560 }, /* 0000 0001 1111 */
{ 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */
{ 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */
{ 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */
{ 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */
{ 12, 0x0, G3CODE_INVALID } /* 0000 0000 0000 */
};
private int[] horizcode =
{ 3, 0x1, 0 }; /* 001 */
private int[] passcode =
{ 4, 0x1, 0 }; /* 0001 */
private int[][] vcodes = {
{ 7, 0x03, 0 }, /* 0000 011 */
{ 6, 0x03, 0 }, /* 0000 11 */
{ 3, 0x03, 0 }, /* 011 */
{ 1, 0x1, 0 }, /* 1 */
{ 3, 0x2, 0 }, /* 010 */
{ 6, 0x02, 0 }, /* 0000 10 */
{ 7, 0x02, 0 } /* 0000 010 */
};
private int[] msbmask =
{ 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
}
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