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- /* $Header: /usr/people/sam/tiff/libtiff/RCS/mkspans.c,v 1.9 1995/06/06 23:49:31 sam Exp $ */
-
- /*
- * Copyright (c) 1991-1995 Sam Leffler
- * Copyright (c) 1991-1995 Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
- #include "tiffcomp.h"
-
- /*
- * Hack program to construct tables used to find
- * runs of zeros and ones in Group 3 Fax encoding.
- */
-
- dumparray(name, runs)
- char *name;
- unsigned char runs[256];
- {
- register int i;
- register char *sep;
- printf("static u_char %s[256] = {\n", name);
- sep = " ";
- for (i = 0; i < 256; i++) {
- printf("%s%d", sep, runs[i]);
- if (((i + 1) % 16) == 0) {
- printf(", /* 0x%02x - 0x%02x */\n", i-15, i);
- sep = " ";
- } else
- sep = ", ";
- }
- printf("\n};\n");
- }
-
- main()
- {
- unsigned char runs[2][256];
-
- memset(runs[0], 0, 256*sizeof (char));
- memset(runs[1], 0, 256*sizeof (char));
- { register int run, runlen, i;
- runlen = 1;
- for (run = 0x80; run != 0xff; run = (run>>1)|0x80) {
- for (i = run-1; i >= 0; i--) {
- runs[1][run|i] = runlen;
- runs[0][(~(run|i)) & 0xff] = runlen;
- }
- runlen++;
- }
- runs[1][0xff] = runs[0][0] = 8;
- }
- dumparray("bruns", runs[0]);
- dumparray("wruns", runs[1]);
- }
-