ref: 6aa746d4788e43727f93ed58581ef13f45f5e4b1
dir: /jbig2_hufftab.h/
/* jbig2dec Copyright (c) 2001 artofcode LLC. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. $Id: jbig2_hufftab.h,v 1.3 2002/06/15 16:02:54 giles Exp $ */ /* predefined Huffman table definitions -- See Annex B of the JBIG2 draft spec */ #ifndef JBIG2_HUFFTAB_H #define JBIG2_HUFFTAB_H typedef struct _Jbig2HuffmanEntry Jbig2HuffmanEntry; typedef struct _Jbig2HuffmanState Jbig2HuffmanState; typedef struct _Jbig2HuffmanTable Jbig2HuffmanTable; typedef struct _Jbig2HuffmanParams Jbig2HuffmanParams; struct _Jbig2HuffmanEntry { union { int32_t RANGELOW; Jbig2HuffmanTable *ext_table; } u; byte PREFLEN; byte RANGELEN; byte flags; }; struct _Jbig2HuffmanTable { int log_table_size; Jbig2HuffmanEntry *entries; }; typedef struct _Jbig2HuffmanLine Jbig2HuffmanLine; struct _Jbig2HuffmanLine { int PREFLEN; int RANGELEN; int RANGELOW; }; struct _Jbig2HuffmanParams { bool HTOOB; int n_lines; const Jbig2HuffmanLine *lines; }; /* Table B.1 */ const Jbig2HuffmanLine jbig_huffman_lines_A[] = { { 1, 4, 0 }, { 2, 8, 16 }, { 3, 16, 272 }, { 0, 32, -1 }, /* low */ { 3, 32, 65808 } /* high */ }; const Jbig2HuffmanParams jbig_huffman_params_A = { FALSE, 5, jbig_huffman_lines_A }; /* Table B.2 */ const Jbig2HuffmanLine jbig_huffman_lines_B[] = { { 1, 0, 0 }, { 2, 0, 1 }, { 3, 0, 2 }, { 4, 3, 3 }, { 5, 6, 11 }, { 0, 32, -1 }, /* low */ { 6, 32, 75 }, /* high */ { 6, 0, 0 } }; const Jbig2HuffmanParams jbig_huffman_params_B = { TRUE, 8, jbig_huffman_lines_B }; /* Table B.3 */ const Jbig2HuffmanLine jbig_huffman_lines_C[] = { { 8, 8, -256 }, { 1, 0, 0 }, { 2, 0, 1 }, { 3, 0, 2 }, { 4, 3, 3 }, { 5, 6, 11 }, { 8, 32, -257 }, /* low */ { 7, 32, 75 }, /* high */ { 6, 0, 0 } /* OOB */ }; const Jbig2HuffmanParams jbig_huffman_params_C = { TRUE, 9, jbig_huffman_lines_C }; /* Table B.4 */ const Jbig2HuffmanLine jbig_huffman_lines_D[] = { { 1, 0, 1 }, { 2, 0, 2 }, { 3, 0, 3 }, { 4, 3, 4 }, { 5, 6, 12 }, { 0, 32, -1 }, /* low */ { 5, 32, 76 }, /* high */ }; const Jbig2HuffmanParams jbig_huffman_params_D = { FALSE, 7, jbig_huffman_lines_D }; /* Table B.5 */ const Jbig2HuffmanLine jbig_huffman_lines_E[] = { {7, 8, -255}, {1, 0, 1}, {2, 0, 2}, {3, 0, 3}, {4, 3, 4}, {5, 6, 12}, {7, 32, -256}, {6, 32, 76} }; const Jbig2HuffmanParams jbig_huffman_params_E = { FALSE, 8, jbig_huffman_lines_E }; /* Table B.14 */ const Jbig2HuffmanLine jbig_huffman_lines_N[] = { { 3, 0, -2 }, { 3, 0, -1 }, { 1, 0, 0 }, { 3, 3, 1 }, { 3, 6, 2 }, { 0, 32, -1 }, /* low */ { 0, 32, 3 }, /* high */ }; const Jbig2HuffmanParams jbig_huffman_params_N = { FALSE, 7, jbig_huffman_lines_N }; #endif /* JBIG2_HUFFTAB_H */