d21d2b3057
definitions that configure produces, including for WIN64. Still needs to be tested. 'lld' is not assured by the run-time DLLs and so GCC warns. Add TIFF_SIZE_T and TIFF_SIZE_FORMAT to provide a type definition and printf format specifier to deal with printing values of 'size_t' type. In particular, this was necessary for WIN64. Added a configure test for if the system headers provide 'optarg' (normal case) and block out the many explicit 'extern' statements in the utilities. This was found to be necessary under Windows when getopt is in a DLL and the symbols are already imported with dllimport via standard header files.
348 lines
9.0 KiB
C
348 lines
9.0 KiB
C
/* $Id: tiffdither.c,v 1.16 2015-06-21 01:09:11 bfriesen Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988-1997 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 "tif_config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef NEED_LIBPORT
|
|
# include "libport.h"
|
|
#endif
|
|
|
|
#include "tiffio.h"
|
|
#include "tiffiop.h"
|
|
|
|
#define streq(a,b) (strcmp(a,b) == 0)
|
|
#define strneq(a,b,n) (strncmp(a,b,n) == 0)
|
|
|
|
#define CopyField(tag, v) \
|
|
if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
|
|
|
|
uint32 imagewidth;
|
|
uint32 imagelength;
|
|
int threshold = 128;
|
|
|
|
static void usage(void);
|
|
|
|
/*
|
|
* Floyd-Steinberg error propragation with threshold.
|
|
* This code is stolen from tiffmedian.
|
|
*/
|
|
static int
|
|
fsdither(TIFF* in, TIFF* out)
|
|
{
|
|
unsigned char *outline, *inputline, *inptr;
|
|
short *thisline, *nextline, *tmpptr;
|
|
register unsigned char *outptr;
|
|
register short *thisptr, *nextptr;
|
|
register uint32 i, j;
|
|
uint32 imax, jmax;
|
|
int lastline, lastpixel;
|
|
int bit;
|
|
tsize_t outlinesize;
|
|
int errcode = 0;
|
|
|
|
imax = imagelength - 1;
|
|
jmax = imagewidth - 1;
|
|
inputline = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
|
|
thisline = (short *)_TIFFmalloc(TIFFSafeMultiply(tmsize_t, imagewidth, sizeof (short)));
|
|
nextline = (short *)_TIFFmalloc(TIFFSafeMultiply(tmsize_t, imagewidth, sizeof (short)));
|
|
outlinesize = TIFFScanlineSize(out);
|
|
outline = (unsigned char *) _TIFFmalloc(outlinesize);
|
|
if (! (inputline && thisline && nextline && outline)) {
|
|
fprintf(stderr, "Out of memory.\n");
|
|
goto skip_on_error;
|
|
}
|
|
|
|
/*
|
|
* Get first line
|
|
*/
|
|
if (TIFFReadScanline(in, inputline, 0, 0) <= 0)
|
|
goto skip_on_error;
|
|
|
|
inptr = inputline;
|
|
nextptr = nextline;
|
|
for (j = 0; j < imagewidth; ++j)
|
|
*nextptr++ = *inptr++;
|
|
for (i = 1; i < imagelength; ++i) {
|
|
tmpptr = thisline;
|
|
thisline = nextline;
|
|
nextline = tmpptr;
|
|
lastline = (i == imax);
|
|
if (TIFFReadScanline(in, inputline, i, 0) <= 0)
|
|
goto skip_on_error;
|
|
inptr = inputline;
|
|
nextptr = nextline;
|
|
for (j = 0; j < imagewidth; ++j)
|
|
*nextptr++ = *inptr++;
|
|
thisptr = thisline;
|
|
nextptr = nextline;
|
|
_TIFFmemset(outptr = outline, 0, outlinesize);
|
|
bit = 0x80;
|
|
for (j = 0; j < imagewidth; ++j) {
|
|
register int v;
|
|
|
|
lastpixel = (j == jmax);
|
|
v = *thisptr++;
|
|
if (v < 0)
|
|
v = 0;
|
|
else if (v > 255)
|
|
v = 255;
|
|
if (v > threshold) {
|
|
*outptr |= bit;
|
|
v -= 255;
|
|
}
|
|
bit >>= 1;
|
|
if (bit == 0) {
|
|
outptr++;
|
|
bit = 0x80;
|
|
}
|
|
if (!lastpixel)
|
|
thisptr[0] += v * 7 / 16;
|
|
if (!lastline) {
|
|
if (j != 0)
|
|
nextptr[-1] += v * 3 / 16;
|
|
*nextptr++ += v * 5 / 16;
|
|
if (!lastpixel)
|
|
nextptr[0] += v / 16;
|
|
}
|
|
}
|
|
if (TIFFWriteScanline(out, outline, i-1, 0) < 0)
|
|
goto skip_on_error;
|
|
}
|
|
goto exit_label;
|
|
|
|
skip_on_error:
|
|
errcode = 1;
|
|
exit_label:
|
|
_TIFFfree(inputline);
|
|
_TIFFfree(thisline);
|
|
_TIFFfree(nextline);
|
|
_TIFFfree(outline);
|
|
return errcode;
|
|
}
|
|
|
|
static uint16 compression = COMPRESSION_PACKBITS;
|
|
static uint16 predictor = 0;
|
|
static uint32 group3options = 0;
|
|
|
|
static void
|
|
processG3Options(char* cp)
|
|
{
|
|
if ((cp = strchr(cp, ':'))) {
|
|
do {
|
|
cp++;
|
|
if (strneq(cp, "1d", 2))
|
|
group3options &= ~GROUP3OPT_2DENCODING;
|
|
else if (strneq(cp, "2d", 2))
|
|
group3options |= GROUP3OPT_2DENCODING;
|
|
else if (strneq(cp, "fill", 4))
|
|
group3options |= GROUP3OPT_FILLBITS;
|
|
else
|
|
usage();
|
|
} while ((cp = strchr(cp, ':')));
|
|
}
|
|
}
|
|
|
|
static int
|
|
processCompressOptions(char* opt)
|
|
{
|
|
if (streq(opt, "none"))
|
|
compression = COMPRESSION_NONE;
|
|
else if (streq(opt, "packbits"))
|
|
compression = COMPRESSION_PACKBITS;
|
|
else if (strneq(opt, "g3", 2)) {
|
|
processG3Options(opt);
|
|
compression = COMPRESSION_CCITTFAX3;
|
|
} else if (streq(opt, "g4"))
|
|
compression = COMPRESSION_CCITTFAX4;
|
|
else if (strneq(opt, "lzw", 3)) {
|
|
char* cp = strchr(opt, ':');
|
|
if (cp)
|
|
predictor = atoi(cp+1);
|
|
compression = COMPRESSION_LZW;
|
|
} else if (strneq(opt, "zip", 3)) {
|
|
char* cp = strchr(opt, ':');
|
|
if (cp)
|
|
predictor = atoi(cp+1);
|
|
compression = COMPRESSION_DEFLATE;
|
|
} else
|
|
return (0);
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char* argv[])
|
|
{
|
|
TIFF *in, *out;
|
|
uint16 samplesperpixel, bitspersample = 1, shortv;
|
|
float floatv;
|
|
char thing[1024];
|
|
uint32 rowsperstrip = (uint32) -1;
|
|
uint16 fillorder = 0;
|
|
int c;
|
|
#if !HAVE_DECL_OPTARG
|
|
extern int optind;
|
|
extern char *optarg;
|
|
#endif
|
|
|
|
while ((c = getopt(argc, argv, "c:f:r:t:")) != -1)
|
|
switch (c) {
|
|
case 'c': /* compression scheme */
|
|
if (!processCompressOptions(optarg))
|
|
usage();
|
|
break;
|
|
case 'f': /* fill order */
|
|
if (streq(optarg, "lsb2msb"))
|
|
fillorder = FILLORDER_LSB2MSB;
|
|
else if (streq(optarg, "msb2lsb"))
|
|
fillorder = FILLORDER_MSB2LSB;
|
|
else
|
|
usage();
|
|
break;
|
|
case 'r': /* rows/strip */
|
|
rowsperstrip = atoi(optarg);
|
|
break;
|
|
case 't':
|
|
threshold = atoi(optarg);
|
|
if (threshold < 0)
|
|
threshold = 0;
|
|
else if (threshold > 255)
|
|
threshold = 255;
|
|
break;
|
|
case '?':
|
|
usage();
|
|
/*NOTREACHED*/
|
|
}
|
|
if (argc - optind < 2)
|
|
usage();
|
|
in = TIFFOpen(argv[optind], "r");
|
|
if (in == NULL)
|
|
return (-1);
|
|
TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
|
|
if (samplesperpixel != 1) {
|
|
fprintf(stderr, "%s: Not a b&w image.\n", argv[0]);
|
|
return (-1);
|
|
}
|
|
TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
|
|
if (bitspersample != 8) {
|
|
fprintf(stderr,
|
|
" %s: Sorry, only handle 8-bit samples.\n", argv[0]);
|
|
return (-1);
|
|
}
|
|
out = TIFFOpen(argv[optind+1], "w");
|
|
if (out == NULL)
|
|
return (-1);
|
|
CopyField(TIFFTAG_IMAGEWIDTH, imagewidth);
|
|
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
|
|
TIFFSetField(out, TIFFTAG_IMAGELENGTH, imagelength-1);
|
|
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 1);
|
|
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
|
|
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
|
|
TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
|
|
if (fillorder)
|
|
TIFFSetField(out, TIFFTAG_FILLORDER, fillorder);
|
|
else
|
|
CopyField(TIFFTAG_FILLORDER, shortv);
|
|
snprintf(thing, sizeof(thing), "Dithered B&W version of %s", argv[optind]);
|
|
TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
|
|
CopyField(TIFFTAG_PHOTOMETRIC, shortv);
|
|
CopyField(TIFFTAG_ORIENTATION, shortv);
|
|
CopyField(TIFFTAG_XRESOLUTION, floatv);
|
|
CopyField(TIFFTAG_YRESOLUTION, floatv);
|
|
CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
|
|
rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
|
|
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
|
|
switch (compression) {
|
|
case COMPRESSION_CCITTFAX3:
|
|
TIFFSetField(out, TIFFTAG_GROUP3OPTIONS, group3options);
|
|
break;
|
|
case COMPRESSION_LZW:
|
|
case COMPRESSION_DEFLATE:
|
|
if (predictor)
|
|
TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
|
|
break;
|
|
}
|
|
fsdither(in, out);
|
|
TIFFClose(in);
|
|
TIFFClose(out);
|
|
return (0);
|
|
}
|
|
|
|
char* stuff[] = {
|
|
"usage: tiffdither [options] input.tif output.tif",
|
|
"where options are:",
|
|
" -r # make each strip have no more than # rows",
|
|
" -t # set the threshold value for dithering (default 128)",
|
|
" -f lsb2msb force lsb-to-msb FillOrder for output",
|
|
" -f msb2lsb force msb-to-lsb FillOrder for output",
|
|
" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
|
|
" -c zip[:opts] compress output with deflate encoding",
|
|
" -c packbits compress output with packbits encoding",
|
|
" -c g3[:opts] compress output with CCITT Group 3 encoding",
|
|
" -c g4 compress output with CCITT Group 4 encoding",
|
|
" -c none use no compression algorithm on output",
|
|
"",
|
|
"Group 3 options:",
|
|
" 1d use default CCITT Group 3 1D-encoding",
|
|
" 2d use optional CCITT Group 3 2D-encoding",
|
|
" fill byte-align EOL codes",
|
|
"For example, -c g3:2d:fill to get G3-2D-encoded data with byte-aligned EOLs",
|
|
"",
|
|
"LZW and deflate options:",
|
|
" # set predictor value",
|
|
"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing",
|
|
NULL
|
|
};
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
char buf[BUFSIZ];
|
|
int i;
|
|
|
|
setbuf(stderr, buf);
|
|
fprintf(stderr, "%s\n\n", TIFFGetVersion());
|
|
for (i = 0; stuff[i] != NULL; i++)
|
|
fprintf(stderr, "%s\n", stuff[i]);
|
|
exit(-1);
|
|
}
|
|
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|
|
/*
|
|
* Local Variables:
|
|
* mode: c
|
|
* c-basic-offset: 8
|
|
* fill-column: 78
|
|
* End:
|
|
*/
|