| /* $Id: mkspans.c,v 1.13 2009/07/14 21:10:27 drolon Exp $ */ |
| |
| /* |
| * Copyright (c) 1991-1997 Sam Leffler |
| * Copyright (c) 1991-1997 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 <string.h> |
| #include <stdio.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]; |
| { |
| int i; |
| char *sep; |
| printf("static unsigned 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]); |
| } |
| |
| /* vim: set ts=8 sts=8 sw=8 noet: */ |