Wed, 12 Mar 2003 11:17:00 +0000
remove the word 'copyright' from producer string in PDF file info.
1 /*
2 * t2p: Create a PDF file from the contents of one or more TIFF
3 * bilevel image files. The images in the resulting PDF file
4 * will be compressed using ITU-T T.6 (G4) fax encoding.
5 *
6 * G4 table generator
7 * $Id: g4_table_gen.c,v 1.3 2003/03/11 22:57:46 eric Exp $
8 * Copyright 2003 Eric Smith <eric@brouhaha.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. Note that permission is
13 * not granted to redistribute this program under the terms of any
14 * other version of the General Public License.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
24 */
27 #include <stdbool.h>
28 #include <stdint.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
34 void emit_code (int indent, char *code, int last, bool comment, int cval)
35 {
36 int i;
37 int count = 0;
38 uint32_t val = 0;
40 printf ("%*s{ ", indent, "");
42 printf ("%d, ", strlen (code));
44 for (i = 0; i < strlen (code); i++)
45 switch (code [i])
46 {
47 case '0': val = (val << 1); count++; break;
48 case '1': val = (val << 1) + 1; count++; break;
49 case ' ': break;
50 default:
51 fprintf (stderr, "internal error\n");
52 exit (2);
53 }
55 printf ("0x%0*x", (count + 3)/4, val);
57 printf (" }");
58 if (! last)
59 printf (",");
60 if (comment)
61 printf (" /* %d */", cval);
62 printf ("\n");
63 }
66 char *long_makeup_code [12] =
67 {
68 /* 1792 */ "00000001000",
69 /* 1856 */ "00000001100",
70 /* 1920 */ "00000001101",
71 /* 1984 */ "000000010010",
72 /* 2048 */ "000000010011",
73 /* 2112 */ "000000010100",
74 /* 2176 */ "000000010101",
75 /* 2240 */ "000000010110",
76 /* 2304 */ "000000010111",
77 /* 2368 */ "000000011100",
78 /* 2432 */ "000000011101",
79 /* 2496 */ "000000011110"
80 /* 2560 "000000011111" hard-coded, doesn't need to be in table */
81 };
84 void print_long_makeup_code (bool header)
85 {
86 int i;
88 if (header)
89 printf ("extern ");
90 printf ("const g4_bits g4_long_makeup_code [12]");
91 if (header)
92 {
93 printf (";\n");
94 return;
95 }
96 printf (" =\n");
97 printf (" {\n");
98 for (i = 0; i < 12; i++)
99 emit_code (4, long_makeup_code [i], i == 11, 1, i * 64 + 1792);
100 printf (" };\n");
101 }
104 char *makeup_code [64][2] =
105 {
106 { /* 64 */ "11011", "0000001111" },
107 { /* 128 */ "10010", "000011001000" },
108 { /* 192 */ "010111", "000011001001" },
109 { /* 256 */ "0110111", "000001011011" },
110 { /* 320 */ "00110110", "000000110011" },
111 { /* 384 */ "00110111", "000000110100" },
112 { /* 448 */ "01100100", "000000110101" },
113 { /* 512 */ "01100101", "0000001101100" },
114 { /* 576 */ "01101000", "0000001101101" },
115 { /* 640 */ "01100111", "0000001001010" },
116 { /* 704 */ "011001100", "0000001001011" },
117 { /* 768 */ "011001101", "0000001001100" },
118 { /* 832 */ "011010010", "0000001001101" },
119 { /* 896 */ "011010011", "0000001110010" },
120 { /* 960 */ "011010100", "0000001110011" },
121 { /* 1024 */ "011010101", "0000001110100" },
122 { /* 1088 */ "011010110", "0000001110101" },
123 { /* 1152 */ "011010111", "0000001110110" },
124 { /* 1216 */ "011011000", "0000001110111" },
125 { /* 1280 */ "011011001", "0000001010010" },
126 { /* 1344 */ "011011010", "0000001010011" },
127 { /* 1408 */ "011011011", "0000001010100" },
128 { /* 1472 */ "010011000", "0000001010101" },
129 { /* 1536 */ "010011001", "0000001011010" },
130 { /* 1600 */ "010011010", "0000001011011" },
131 { /* 1664 */ "011000", "0000001100100" },
132 { /* 1728 */ "010011011", "0000001100101" }
133 };
136 void print_makeup_code (bool header)
137 {
138 int i;
140 if (header)
141 printf ("extern ");
142 printf ("const g4_bits g4_makeup_code [2] [27]");
143 if (header)
144 {
145 printf (";\n");
146 return;
147 }
148 printf (" =\n");
149 printf (" {\n");
150 printf (" {\n");
151 printf (" /* white */\n");
152 for (i = 0; i <= 26; i++)
153 emit_code (6, makeup_code [i][0], i == 26, 1, (i + 1) * 64);
154 printf (" },\n");
155 printf (" {\n");
156 printf (" /* black */\n");
157 for (i = 0; i <= 26; i++)
158 emit_code (6, makeup_code [i][1], i == 26, 1, (i + 1) * 64);
159 printf (" }\n");
160 printf (" };\n");
161 }
164 char *h_code [64][2] =
165 {
166 { /* 0 */ "00110101", "0000110111" },
167 { /* 1 */ "000111", "010" },
168 { /* 2 */ "0111", "11" },
169 { /* 3 */ "1000", "10" },
170 { /* 4 */ "1011", "011" },
171 { /* 5 */ "1100", "0011" },
172 { /* 6 */ "1110", "0010" },
173 { /* 7 */ "1111", "00011" },
174 { /* 8 */ "10011", "000101" },
175 { /* 9 */ "10100", "000100" },
176 { /* 10 */ "00111", "0000100" },
177 { /* 11 */ "01000", "0000101" },
178 { /* 12 */ "001000", "0000111" },
179 { /* 13 */ "000011", "00000100" },
180 { /* 14 */ "110100", "00000111" },
181 { /* 15 */ "110101", "000011000" },
182 { /* 16 */ "101010", "0000010111" },
183 { /* 17 */ "101011", "0000011000" },
184 { /* 18 */ "0100111", "0000001000" },
185 { /* 19 */ "0001100", "00001100111" },
186 { /* 20 */ "0001000", "00001101000" },
187 { /* 21 */ "0010111", "00001101100" },
188 { /* 22 */ "0000011", "00000110111" },
189 { /* 23 */ "0000100", "00000101000" },
190 { /* 24 */ "0101000", "00000010111" },
191 { /* 25 */ "0101011", "00000011000" },
192 { /* 26 */ "0010011", "000011001010" },
193 { /* 27 */ "0100100", "000011001011" },
194 { /* 28 */ "0011000", "000011001100" },
195 { /* 29 */ "00000010", "000011001101" },
196 { /* 30 */ "00000011", "000001101000" },
197 { /* 31 */ "00011010", "000001101001" },
198 { /* 32 */ "00011011", "000001101010" },
199 { /* 33 */ "00010010", "000001101011" },
200 { /* 34 */ "00010011", "000011010010" },
201 { /* 35 */ "00010100", "000011010011" },
202 { /* 36 */ "00010101", "000011010100" },
203 { /* 37 */ "00010110", "000011010101" },
204 { /* 38 */ "00010111", "000011010110" },
205 { /* 39 */ "00101000", "000011010111" },
206 { /* 40 */ "00101001", "000001101100" },
207 { /* 41 */ "00101010", "000001101101" },
208 { /* 42 */ "00101011", "000011011010" },
209 { /* 43 */ "00101100", "000011011011" },
210 { /* 44 */ "00101101", "000001010100" },
211 { /* 45 */ "00000100", "000001010101" },
212 { /* 46 */ "00000101", "000001010110" },
213 { /* 47 */ "00001010", "000001010111" },
214 { /* 48 */ "00001011", "000001100100" },
215 { /* 49 */ "01010010", "000001100101" },
216 { /* 50 */ "01010011", "000001010010" },
217 { /* 51 */ "01010100", "000001010011" },
218 { /* 52 */ "01010101", "000000100100" },
219 { /* 53 */ "00100100", "000000110111" },
220 { /* 54 */ "00100101", "000000111000" },
221 { /* 55 */ "01011000", "000000100111" },
222 { /* 56 */ "01011001", "000000101000" },
223 { /* 57 */ "01011010", "000001011000" },
224 { /* 58 */ "01011011", "000001011001" },
225 { /* 59 */ "01001010", "000000101011" },
226 { /* 60 */ "01001011", "000000101100" },
227 { /* 61 */ "00110010", "000001011010" },
228 { /* 62 */ "00110011", "000001100110" },
229 { /* 63 */ "00110100", "000001100111" }
230 };
233 void print_h_code (bool header)
234 {
235 int i;
237 if (header)
238 printf ("extern ");
239 printf ("const g4_bits g4_h_code [2] [64]");
240 if (header)
241 {
242 printf (";\n");
243 return;
244 }
245 printf (" =\n");
246 printf (" {\n");
247 printf (" {\n");
248 printf (" /* white */\n");
249 for (i = 0; i <= 63; i++)
250 emit_code (6, h_code [i][0], i == 63, 1, i);
251 printf (" },\n");
252 printf (" {\n");
253 printf (" /* black */\n");
254 for (i = 0; i <= 63; i++)
255 emit_code (6, h_code [i][1], i == 63, 1, i);
256 printf (" }\n");
257 printf (" };\n");
258 }
261 char *v_code [7] =
262 {
263 /* -3 */ "0000010",
264 /* -2 */ "000010",
265 /* -1 */ "010",
266 /* 0 */ "1",
267 /* 1 */ "011",
268 /* 2 */ "000011",
269 /* 3 */ "0000011"
270 };
273 void print_v_code (bool header)
274 {
275 int i;
277 if (header)
278 printf ("extern ");
279 printf ("const g4_bits g4_vert_code [7]");
280 if (header)
281 {
282 printf (";\n");
283 return;
284 }
285 printf ("=\n");
286 printf (" {\n");
287 for (i = 0; i <= 6; i++)
288 emit_code (4, v_code [i], i == 6, 1, i - 3);
289 printf (" };\n");
290 }
293 int main (int argc, char *argv [])
294 {
295 bool header;
297 if (argc != 2)
298 {
299 fprintf (stderr, "wrong arg count\n");
300 exit (2);
301 }
302 if (strcmp (argv [1], "-h") == 0)
303 header = 1;
304 else if (strcmp (argv [1], "-c") == 0)
305 header = 0;
306 else
307 {
308 fprintf (stderr, "wrong args\n");
309 exit (2);
310 }
312 printf ("/* This file is automatically generated; do not edit */\n");
313 printf ("\n");
315 if (header)
316 {
317 printf ("typedef struct\n");
318 printf ("{\n");
319 printf (" uint32_t count;\n");
320 printf (" uint32_t bits;\n");
321 printf ("} g4_bits;\n");
322 }
323 else
324 {
325 printf ("#include <stdint.h>\n");
326 printf ("#include \"g4_tables.h\"\n");
327 }
328 printf ("\n");
330 print_long_makeup_code (header);
331 printf ("\n");
333 print_makeup_code (header);
334 printf ("\n");
336 print_h_code (header);
337 printf ("\n");
339 print_v_code (header);
341 exit (0);
342 }