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#ifndef lint
static char rcsid[] = "/mode/users/src/master/tiff/tools/tiff2bw.c,v 1.1.1.1 1994/04/01 17:15:35 fedor Exp";
#endif
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
* Copyright (c) 1991, 1992 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 <stdio.h>
#include "tiffio.h"
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned long u_long;
#define streq(a,b) (strcmp((a),(b)) == 0)
#define CopyField(tag, v) \
if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
/* x% weighting -> fraction of full color */
#define CVT(x) (((x)*255)/100)
int RED = CVT(28); /* 28% */
int GREEN = CVT(59); /* 59% */
int BLUE = CVT(11); /* 11% */
usage()
{
fprintf(stderr,
"usage: tiff2bw [-r red%%] [-g green%%] [-b blue%%] input output\n");
exit(1);
}
main(argc, argv)
int argc;
char **argv;
{
TIFF *in, *out;
u_long w, h;
u_short samplesperpixel, bitspersample, shortv, config;
float floatv;
register u_long row;
register int s;
u_char *inbuf, *outbuf;
char thing[1024];
u_long rowsperstrip;
int c;
extern int optind;
extern char *optarg;
while ((c = getopt(argc, argv, "r:g:b:")) != -1)
switch (c) {
case 'r':
RED = CVT(atoi(optarg));
break;
case 'g':
GREEN = CVT(atoi(optarg));
break;
case 'b':
BLUE = CVT(atoi(optarg));
break;
case '?':
usage();
/*NOTREACHED*/
}
if (argc - optind < 2)
usage();
in = TIFFOpen(argv[optind], "r");
if (in == NULL)
exit(-1);
TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
if (samplesperpixel != 3) {
fprintf(stderr, "%s: Not a color image.\n", argv[0]);
exit(-1);
}
TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
if (bitspersample != 8) {
fprintf(stderr,
" %s: Sorry, only handle 8-bit samples.\n", argv[0]);
exit(-1);
}
out = TIFFOpen(argv[optind+1], "w");
if (out == NULL)
exit(-1);
CopyField(TIFFTAG_IMAGEWIDTH, w);
CopyField(TIFFTAG_IMAGELENGTH, h);
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(out, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
sprintf(thing, "B&W version of %s", argv[optind]);
TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
TIFFSetField(out, TIFFTAG_SOFTWARE, "tiff2bw");
CopyField(TIFFTAG_ORIENTATION, shortv);
CopyField(TIFFTAG_XRESOLUTION, floatv);
CopyField(TIFFTAG_YRESOLUTION, floatv);
CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
outbuf = (u_char *)malloc(TIFFScanlineSize(out));
rowsperstrip = (8*1024)/TIFFScanlineSize(out);
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
rowsperstrip == 0 ? 1L : rowsperstrip);
TIFFGetField(in, TIFFTAG_PLANARCONFIG, &config);
switch (config) {
case PLANARCONFIG_CONTIG:
inbuf = (u_char *)malloc(TIFFScanlineSize(in));
for (row = 0; row < h; row++) {
if (TIFFReadScanline(in, inbuf, row, 0) < 0)
break;
compresscontig(outbuf, inbuf, w);
if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
break;
}
break;
case PLANARCONFIG_SEPARATE: {
int rowbytes = TIFFScanlineSize(in);
inbuf = (u_char *)malloc(3*rowbytes);
for (row = 0; row < h; row++) {
for (s = 0; s < 3; s++)
if (TIFFReadScanline(in,
inbuf+s*rowbytes, row, s) < 0)
exit(-1);
compresssep(outbuf,
inbuf, inbuf+rowbytes, inbuf+2*rowbytes, w);
if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
break;
}
}
}
TIFFClose(out);
}
compresscontig(out, rgb, n)
register u_char *out, *rgb;
register u_long n;
{
register int v, red = RED, green = GREEN, blue = BLUE;
while (n-- > 0) {
v = red*(*rgb++);
v += green*(*rgb++);
v += blue*(*rgb++);
*out++ = v>>8;
}
}
compresssep(out, r, g, b, n)
register u_char *out, *r, *g, *b;
register u_long n;
{
register int red = RED, green = GREEN, blue = BLUE;
while (n-- > 0)
*out++ = (red*(*r++) + green*(*g++) + blue*(*b++)) >> 8;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.