/*

* 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 "tif_config.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#ifdef HAVE_UNISTD_H

# include <unistd.h>

#endif

#ifdef HAVE_FCNTL_H

# include <fcntl.h>

#endif

#ifdef HAVE_IO_H

# include <io.h>

#endif

#ifdef NEED_LIBPORT

# include "libport.h"

#endif

#include "tiffio.h"

#ifndef HAVE_GETOPT

extern int getopt(int argc, char * const argv[], const char *optstring);

#endif

#define streq(a,b) (strcmp(a,b) == 0)

#define strneq(a,b,n) (strncmp(a,b,n) == 0)

static uint16 compression = COMPRESSION_PACKBITS;

static uint16 predictor = 0;

static int quality = 75; /* JPEG quality */

static int jpegcolormode = JPEGCOLORMODE_RGB;

static uint32 g3opts;

static void usage(void);

static int processCompressOptions(char*);

static void

BadPPM(char* file)

{

fprintf(stderr, "%s: Not a PPM file.\n", file);

exit(-2);

}

#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))

#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)

static tmsize_t

multiply_ms(tmsize_t m1, tmsize_t m2)

{

if( m1 == 0 || m2 > TIFF_TMSIZE_T_MAX / m1 )

return 0;

return m1 * m2;

}

int

main(int argc, char* argv[])

{

uint16 photometric = 0;

uint32 rowsperstrip = (uint32) -1;

double resolution = -1;

unsigned char *buf = NULL;

tmsize_t linebytes = 0;

uint16 spp = 1;

uint16 bpp = 8;

TIFF *out;

FILE *in;

unsigned int w, h, prec, row;

char *infile;

int c;

#if !HAVE_DECL_OPTARG

extern int optind;

extern char* optarg;

#endif

tmsize_t scanline_size;

if (argc < 2) {

fprintf(stderr, "%s: Too few arguments\n", argv[0]);

usage();

}

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 (optind + 2 < argc) {

fprintf(stderr, "%s: Too many arguments\n", argv[0]);

usage();

}

/*

* 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, "rb");

if (in == NULL) {

fprintf(stderr, "%s: Can not open.\n", infile);

return (-1);

}

} else {

infile = "<stdin>";

in = stdin;

#if defined(HAVE_SETMODE) && defined(O_BINARY)

setmode(fileno(stdin), O_BINARY);

#endif

}

if (fgetc(in) != 'P')

BadPPM(infile);

switch (fgetc(in)) {

case '4': /* it's a PBM file */

bpp = 1;

spp = 1;

photometric = PHOTOMETRIC_MINISWHITE;

break;

case '5': /* it's a PGM file */

bpp = 8;

spp = 1;

photometric = PHOTOMETRIC_MINISBLACK;

break;

case '6': /* it's a PPM file */

bpp = 8;

spp = 3;

photometric = PHOTOMETRIC_RGB;

if (compression == COMPRESSION_JPEG &&

jpegcolormode == JPEGCOLORMODE_RGB)

photometric = PHOTOMETRIC_YCBCR;

break;

default:

BadPPM(infile);

}

/* Parse header */

while(1) {

if (feof(in))

BadPPM(infile);

c = fgetc(in);

/* Skip whitespaces (blanks, TABs, CRs, LFs) */

if (strchr(" \t\r\n", c))

continue;

/* Check for comment line */

if (c == '#') {

do {

c = fgetc(in);

} while(!(strchr("\r\n", c) || feof(in)));

continue;

}

ungetc(c, in);

break;

}

switch (bpp) {

case 1:

if (fscanf(in, " %u %u", &w, &h) != 2)

BadPPM(infile);

if (fgetc(in) != '\n')

BadPPM(infile);

break;

case 8:

if (fscanf(in, " %u %u %u", &w, &h, &prec) != 3)

BadPPM(infile);

if (fgetc(in) != '\n' || prec != 255)

BadPPM(infile);

break;

}

out = TIFFOpen(argv[optind], "w");

if (out == NULL)

return (-4);

TIFFSetField(out, TIFFTAG_IMAGEWIDTH, (uint32) w);

TIFFSetField(out, TIFFTAG_IMAGELENGTH, (uint32) h);

TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);

TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, spp);

TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, bpp);

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;

case COMPRESSION_CCITTFAX3:

TIFFSetField(out, TIFFTAG_GROUP3OPTIONS, g3opts);

break;

}

switch (bpp) {

case 1:

/* if round-up overflows, result will be zero, OK */

linebytes = (multiply_ms(spp, w) + (8 - 1)) / 8;

if (rowsperstrip == (uint32) -1) {

TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, h);

} else {

TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,

TIFFDefaultStripSize(out, rowsperstrip));

}

break;

case 8:

linebytes = multiply_ms(spp, w);

TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,

TIFFDefaultStripSize(out, rowsperstrip));

break;

}

if (linebytes == 0) {

fprintf(stderr, "%s: scanline size overflow\n", infile);

(void) TIFFClose(out);

exit(-2);

}

scanline_size = TIFFScanlineSize(out);

if (scanline_size == 0) {

/* overflow - TIFFScanlineSize already printed a message */

(void) TIFFClose(out);

exit(-2);

}

if (scanline_size < linebytes)

buf = (unsigned char *)_TIFFmalloc(linebytes);

else

buf = (unsigned char *)_TIFFmalloc(scanline_size);

if (buf == NULL) {

fprintf(stderr, "%s: Not enough memory\n", infile);

(void) TIFFClose(out);

exit(-2);

}

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;

}

if (in != stdin)

fclose(in);

(void) TIFFClose(out);

if (buf)

_TIFFfree(buf);

return (0);

}

static void

processG3Options(char* cp)

{

g3opts = 0;

if( (cp = strchr(cp, ':')) ) {

do {

cp++;

if (strneq(cp, "1d", 2))

g3opts &= ~GROUP3OPT_2DENCODING;

else if (strneq(cp, "2d", 2))

g3opts |= GROUP3OPT_2DENCODING;

else if (strneq(cp, "fill", 4))

g3opts |= 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, "jpeg", 4)) {

char* cp = strchr(opt, ':');

compression = COMPRESSION_JPEG;

while (cp)

{

if (isdigit((int)cp[1]))

quality = atoi(cp+1);

else if (cp[1] == 'r' )

jpegcolormode = JPEGCOLORMODE_RAW;

else

usage();

cp = strchr(cp+1,':');

}

} 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);

}

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 (the default)",

" -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",

"",

"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);

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:

*/