/* $Header: /usr/local/cvs/internal/libtiff/libtiff/mkspans.c,v 1.1.1.1 1999/07/27 21:50:27 mike 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 "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]); }