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/* $Header: /usr/people/sam/tiff/tools/RCS/ppm2tiff.c,v 1.26 1996/04/22 22:03:26 sam Exp $ */
/*
* Copyright (c) 1991-1996 Sam Leffler
* Copyright (c) 1991-1996 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 <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "tiffio.h"
#if defined(_WINDOWS) || defined(MSDOS)
#define BINMODE "b"
#else
#define BINMODE
#endif
#define streq(a,b) (strcmp(a,b) == 0)
#define strneq(a,b,n) (strncmp(a,b,n) == 0)
static uint16 compression = COMPRESSION_LZW;
static uint16 predictor = 0;
static int quality = 75; /* JPEG quality */
static int jpegcolormode = JPEGCOLORMODE_RGB;
static void usage(void);
static int processCompressOptions(char*);
static void
BadPPM(char* file)
{
fprintf(stderr, "%s: Not a PPM file.\n", file);
exit(-2);
}
int
main(int argc, char* argv[])
{
uint16 photometric;
uint32 rowsperstrip = (uint32) -1;
double resolution = -1;
unsigned char *buf = NULL;
uint32 row;
tsize_t linebytes;
uint16 spp;
TIFF *out;
FILE *in;
uint32 w, h;
int prec;
char *infile;
int c;
extern int optind;
extern char* optarg;
while ((c = getopt(argc, argv, "c:r:R:")) != -1)
switch (c) {
case 'c': /* compression scheme */
if (!processCompressOptions(optarg))
usage();
break;
case 'r': /* rows/strip */
rowsperstrip = atoi(optarg);
break;
case 'R': /* resolution */
resolution = atof(optarg);
break;
case '?':
usage();
/*NOTREACHED*/
}
/*
* If only one file is specified, read input from
* stdin; otherwise usage is: ppm2tiff input output.
*/
if (argc - optind > 1) {
infile = argv[optind++];
in = fopen(infile, "r" BINMODE);
if (in == NULL) {
fprintf(stderr, "%s: Can not open.\n", infile);
return (-1);
}
} else {
infile = "<stdin>";
in = stdin;
}
if (getc(in) != 'P')
BadPPM(infile);
switch (getc(in)) {
case '5': /* it's a PGM file */
spp = 1;
photometric = PHOTOMETRIC_MINISBLACK;
break;
case '6': /* it's a PPM file */
spp = 3;
photometric = PHOTOMETRIC_RGB;
if (compression == COMPRESSION_JPEG &&
jpegcolormode == JPEGCOLORMODE_RGB)
photometric = PHOTOMETRIC_YCBCR;
break;
default:
BadPPM(infile);
}
if (fscanf(in, " %ld %ld %d", &w, &h, &prec) != 3)
BadPPM(infile);
if (getc(in) != '\n' || w <= 0 || h <= 0 || prec != 255)
BadPPM(infile);
out = TIFFOpen(argv[optind], "w");
if (out == NULL)
return (-4);
TIFFSetField(out, TIFFTAG_IMAGEWIDTH, w);
TIFFSetField(out, TIFFTAG_IMAGELENGTH, h);
TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, spp);
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
switch (compression) {
case COMPRESSION_JPEG:
TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
break;
case COMPRESSION_LZW:
case COMPRESSION_DEFLATE:
if (predictor != 0)
TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
break;
}
linebytes = spp * w;
if (TIFFScanlineSize(out) > linebytes)
buf = (unsigned char *)_TIFFmalloc(linebytes);
else
buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
TIFFDefaultStripSize(out, rowsperstrip));
if (resolution > 0) {
TIFFSetField(out, TIFFTAG_XRESOLUTION, resolution);
TIFFSetField(out, TIFFTAG_YRESOLUTION, resolution);
TIFFSetField(out, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH);
}
for (row = 0; row < h; row++) {
if (fread(buf, linebytes, 1, in) != 1) {
fprintf(stderr, "%s: scanline %lu: Read error.\n",
infile, (unsigned long) row);
break;
}
if (TIFFWriteScanline(out, buf, row, 0) < 0)
break;
}
(void) TIFFClose(out);
if (buf)
_TIFFfree(buf);
return (0);
}
static int
processCompressOptions(char* opt)
{
if (streq(opt, "none"))
compression = COMPRESSION_NONE;
else if (streq(opt, "packbits"))
compression = COMPRESSION_PACKBITS;
else if (strneq(opt, "jpeg", 4)) {
char* cp = strchr(opt, ':');
if (cp && isdigit(cp[1]))
quality = atoi(cp+1);
if (cp && strchr(cp, 'r'))
jpegcolormode = JPEGCOLORMODE_RAW;
compression = COMPRESSION_JPEG;
} 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);
}
char* stuff[] = {
"usage: ppm2tiff [options] input.ppm output.tif",
"where options are:",
" -r # make each strip have no more than # rows",
" -R # set x&y resolution (dpi)",
"",
" -c jpeg[:opts] compress output with JPEG encoding",
" -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 none use no compression algorithm on output",
"",
"JPEG options:",
" # set compression quality level (0-100, default 75)",
" r output color image as RGB rather than YCbCr",
"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);
for (i = 0; stuff[i] != NULL; i++)
fprintf(stderr, "%s\n", stuff[i]);
exit(-1);
}
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