1 /* $Header$ */
2
3 /*
4 * Copyright (c) 1991-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and
8 * its documentation for any purpose is hereby granted without fee, provided
9 * that (i) the above copyright notices and this permission notice appear in
10 * all copies of the software and related documentation, and (ii) the names of
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or
12 * publicity relating to the software without the specific, prior written
13 * permission of Sam Leffler and Silicon Graphics.
14 *
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 */
26
27 #include "tiffcomp.h"
28
29 /*
30 * Hack program to construct tables used to find
31 * runs of zeros and ones in Group 3 Fax encoding.
32 */
33
dumparray(name,runs)34 dumparray(name, runs)
35 char *name;
36 unsigned char runs[256];
37 {
38 register int i;
39 register char *sep;
40 printf("static u_char %s[256] = {\n", name);
41 sep = " ";
42 for (i = 0; i < 256; i++) {
43 printf("%s%d", sep, runs[i]);
44 if (((i + 1) % 16) == 0) {
45 printf(", /* 0x%02x - 0x%02x */\n", i-15, i);
46 sep = " ";
47 } else
48 sep = ", ";
49 }
50 printf("\n};\n");
51 }
52
main()53 main()
54 {
55 unsigned char runs[2][256];
56
57 memset(runs[0], 0, 256*sizeof (char));
58 memset(runs[1], 0, 256*sizeof (char));
59 { register int run, runlen, i;
60 runlen = 1;
61 for (run = 0x80; run != 0xff; run = (run>>1)|0x80) {
62 for (i = run-1; i >= 0; i--) {
63 runs[1][run|i] = runlen;
64 runs[0][(~(run|i)) & 0xff] = runlen;
65 }
66 runlen++;
67 }
68 runs[1][0xff] = runs[0][0] = 8;
69 }
70 dumparray("bruns", runs[0]);
71 dumparray("wruns", runs[1]);
72 }
73