/* Initialise fax decoder tables Copyright (C) 1990, 1995 Frank D. Cringle. This file is part of viewfax - g3/g4 fax processing software. viewfax 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. 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include <sys/types.h> #include "faxexpand.h" struct tabent MainTable[128]; struct tabent WhiteTable[4096]; struct tabent BlackTable[8192]; struct proto { t16bits code; /* right justified, lsb-first, zero filled */ t16bits val; /* (pixel count)<<4 + code width */ }; static struct proto Pass[] = { { 0x0008, 4 }, { 0, 0 } }; static struct proto Horiz[] = { { 0x0004, 3 }, { 0, 0 } }; static struct proto V0[] = { { 0x0001, 1 }, { 0, 0 } }; static struct proto VR[] = { { 0x0006, (1<<4)+3 }, { 0x0030, (2<<4)+6 }, { 0x0060, (3<<4)+7 }, { 0, 0 } }; static struct proto VL[] = { { 0x0002, (1<<4)+3 }, { 0x0010, (2<<4)+6 }, { 0x0020, (3<<4)+7 }, { 0, 0 } }; static struct proto ExtV[] = { { 0x0040, 7 }, { 0, 0 } }; static struct proto EOLV[] = { { 0x0000, 7 }, { 0, 0 } }; static struct proto MakeUpW[] = { { 0x001b, 1029 }, { 0x0009, 2053 }, { 0x003a, 3078 }, { 0x0076, 4103 }, { 0x006c, 5128 }, { 0x00ec, 6152 }, { 0x0026, 7176 }, { 0x00a6, 8200 }, { 0x0016, 9224 }, { 0x00e6, 10248 }, { 0x0066, 11273 }, { 0x0166, 12297 }, { 0x0096, 13321 }, { 0x0196, 14345 }, { 0x0056, 15369 }, { 0x0156, 16393 }, { 0x00d6, 17417 }, { 0x01d6, 18441 }, { 0x0036, 19465 }, { 0x0136, 20489 }, { 0x00b6, 21513 }, { 0x01b6, 22537 }, { 0x0032, 23561 }, { 0x0132, 24585 }, { 0x00b2, 25609 }, { 0x0006, 26630 }, { 0x01b2, 27657 }, { 0, 0 } }; static struct proto MakeUpB[] = { { 0x03c0, 1034 }, { 0x0130, 2060 }, { 0x0930, 3084 }, { 0x0da0, 4108 }, { 0x0cc0, 5132 }, { 0x02c0, 6156 }, { 0x0ac0, 7180 }, { 0x06c0, 8205 }, { 0x16c0, 9229 }, { 0x0a40, 10253 }, { 0x1a40, 11277 }, { 0x0640, 12301 }, { 0x1640, 13325 }, { 0x09c0, 14349 }, { 0x19c0, 15373 }, { 0x05c0, 16397 }, { 0x15c0, 17421 }, { 0x0dc0, 18445 }, { 0x1dc0, 19469 }, { 0x0940, 20493 }, { 0x1940, 21517 }, { 0x0540, 22541 }, { 0x1540, 23565 }, { 0x0b40, 24589 }, { 0x1b40, 25613 }, { 0x04c0, 26637 }, { 0x14c0, 27661 }, { 0, 0 } }; static struct proto MakeUp[] = { { 0x0080, 28683 }, { 0x0180, 29707 }, { 0x0580, 30731 }, { 0x0480, 31756 }, { 0x0c80, 32780 }, { 0x0280, 33804 }, { 0x0a80, 34828 }, { 0x0680, 35852 }, { 0x0e80, 36876 }, { 0x0380, 37900 }, { 0x0b80, 38924 }, { 0x0780, 39948 }, { 0x0f80, 40972 }, { 0, 0 } }; static struct proto TermW[] = { { 0x00ac, 8 }, { 0x0038, 22 }, { 0x000e, 36 }, { 0x0001, 52 }, { 0x000d, 68 }, { 0x0003, 84 }, { 0x0007, 100 }, { 0x000f, 116 }, { 0x0019, 133 }, { 0x0005, 149 }, { 0x001c, 165 }, { 0x0002, 181 }, { 0x0004, 198 }, { 0x0030, 214 }, { 0x000b, 230 }, { 0x002b, 246 }, { 0x0015, 262 }, { 0x0035, 278 }, { 0x0072, 295 }, { 0x0018, 311 }, { 0x0008, 327 }, { 0x0074, 343 }, { 0x0060, 359 }, { 0x0010, 375 }, { 0x000a, 391 }, { 0x006a, 407 }, { 0x0064, 423 }, { 0x0012, 439 }, { 0x000c, 455 }, { 0x0040, 472 }, { 0x00c0, 488 }, { 0x0058, 504 }, { 0x00d8, 520 }, { 0x0048, 536 }, { 0x00c8, 552 }, { 0x0028, 568 }, { 0x00a8, 584 }, { 0x0068, 600 }, { 0x00e8, 616 }, { 0x0014, 632 }, { 0x0094, 648 }, { 0x0054, 664 }, { 0x00d4, 680 }, { 0x0034, 696 }, { 0x00b4, 712 }, { 0x0020, 728 }, { 0x00a0, 744 }, { 0x0050, 760 }, { 0x00d0, 776 }, { 0x004a, 792 }, { 0x00ca, 808 }, { 0x002a, 824 }, { 0x00aa, 840 }, { 0x0024, 856 }, { 0x00a4, 872 }, { 0x001a, 888 }, { 0x009a, 904 }, { 0x005a, 920 }, { 0x00da, 936 }, { 0x0052, 952 }, { 0x00d2, 968 }, { 0x004c, 984 }, { 0x00cc, 1000 }, { 0x002c, 1016 }, { 0, 0 } }; static struct proto TermB[] = { { 0x03b0, 10 }, { 0x0002, 19 }, { 0x0003, 34 }, { 0x0001, 50 }, { 0x0006, 67 }, { 0x000c, 84 }, { 0x0004, 100 }, { 0x0018, 117 }, { 0x0028, 134 }, { 0x0008, 150 }, { 0x0010, 167 }, { 0x0050, 183 }, { 0x0070, 199 }, { 0x0020, 216 }, { 0x00e0, 232 }, { 0x0030, 249 }, { 0x03a0, 266 }, { 0x0060, 282 }, { 0x0040, 298 }, { 0x0730, 315 }, { 0x00b0, 331 }, { 0x01b0, 347 }, { 0x0760, 363 }, { 0x00a0, 379 }, { 0x0740, 395 }, { 0x00c0, 411 }, { 0x0530, 428 }, { 0x0d30, 444 }, { 0x0330, 460 }, { 0x0b30, 476 }, { 0x0160, 492 }, { 0x0960, 508 }, { 0x0560, 524 }, { 0x0d60, 540 }, { 0x04b0, 556 }, { 0x0cb0, 572 }, { 0x02b0, 588 }, { 0x0ab0, 604 }, { 0x06b0, 620 }, { 0x0eb0, 636 }, { 0x0360, 652 }, { 0x0b60, 668 }, { 0x05b0, 684 }, { 0x0db0, 700 }, { 0x02a0, 716 }, { 0x0aa0, 732 }, { 0x06a0, 748 }, { 0x0ea0, 764 }, { 0x0260, 780 }, { 0x0a60, 796 }, { 0x04a0, 812 }, { 0x0ca0, 828 }, { 0x0240, 844 }, { 0x0ec0, 860 }, { 0x01c0, 876 }, { 0x0e40, 892 }, { 0x0140, 908 }, { 0x01a0, 924 }, { 0x09a0, 940 }, { 0x0d40, 956 }, { 0x0340, 972 }, { 0x05a0, 988 }, { 0x0660, 1004 }, { 0x0e60, 1020 }, { 0, 0 } }; static struct proto ExtH[] = { { 0x0100, 9 }, { 0, 0 } }; static struct proto EOLH[] = { { 0x0000, 11 }, { 0, 0 } }; static void FillTable(struct tabent *T, int Size, struct proto *P, int State) { int limit = 1 << Size; while (P->val) { int width = P->val & 15; int param = P->val >> 4; int incr = 1 << width; int code; for (code = P->code; code < limit; code += incr) { struct tabent *E = T+code; E->State = State; E->Width = width; E->Param = param; } P++; } } /* initialise the huffman code tables */ void faxinit(void) { FillTable(MainTable, 7, Pass, S_Pass); FillTable(MainTable, 7, Horiz, S_Horiz); FillTable(MainTable, 7, V0, S_V0); FillTable(MainTable, 7, VR, S_VR); FillTable(MainTable, 7, VL, S_VL); FillTable(MainTable, 7, ExtV, S_Ext); FillTable(MainTable, 7, EOLV, S_EOL); FillTable(WhiteTable, 12, MakeUpW, S_MakeUpW); FillTable(WhiteTable, 12, MakeUp, S_MakeUp); FillTable(WhiteTable, 12, TermW, S_TermW); FillTable(WhiteTable, 12, ExtH, S_Ext); FillTable(WhiteTable, 12, EOLH, S_EOL); FillTable(BlackTable, 13, MakeUpB, S_MakeUpB); FillTable(BlackTable, 13, MakeUp, S_MakeUp); FillTable(BlackTable, 13, TermB, S_TermB); FillTable(BlackTable, 13, ExtH, S_Ext); FillTable(BlackTable, 13, EOLH, S_EOL); }