/*

* 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 <string.h>

#include <stdlib.h>

#include <ctype.h>

#ifdef HAVE_UNISTD_H

# include <unistd.h>

#endif

#ifdef NEED_LIBPORT

# include "libport.h"

#endif

#include "tiffio.h"

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

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

static void usage(void);

static void cpTags(TIFF* in, TIFF* out);

static int

checkcmap(int n, uint16* r, uint16* g, uint16* b)

{

while (n-- > 0)

if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)

return (16);

fprintf(stderr, "Warning, assuming 8-bit colormap.\n");

return (8);

}

#define CopyField(tag, v) \

if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)

#define CopyField3(tag, v1, v2, v3) \

if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)

static uint16 compression = (uint16) -1;

static uint16 predictor = 0;

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

static int jpegcolormode = JPEGCOLORMODE_RGB;

static int processCompressOptions(char*);

int

main(int argc, char* argv[])

{

uint16 bitspersample, shortv;

uint32 imagewidth, imagelength;

uint16 config = PLANARCONFIG_CONTIG;

uint32 rowsperstrip = (uint32) -1;

uint16 photometric = PHOTOMETRIC_RGB;

uint16 *rmap, *gmap, *bmap;

uint32 row;

int cmap = -1;

TIFF *in, *out;

int c;

#if !HAVE_DECL_OPTARG

extern int optind;

extern char* optarg;

#endif

while ((c = getopt(argc, argv, "C:c:p:r:")) != -1)

switch (c) {

case 'C': /* force colormap interpretation */

cmap = atoi(optarg);

break;

case 'c': /* compression scheme */

if (!processCompressOptions(optarg))

usage();

break;

case 'p': /* planar configuration */

if (streq(optarg, "separate"))

config = PLANARCONFIG_SEPARATE;

else if (streq(optarg, "contig"))

config = PLANARCONFIG_CONTIG;

else

usage();

break;

case 'r': /* rows/strip */

rowsperstrip = atoi(optarg);

break;

case '?':

usage();

/*NOTREACHED*/

}

if (argc - optind != 2)

usage();

in = TIFFOpen(argv[optind], "r");

if (in == NULL)

return (-1);

if (!TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &shortv) ||

shortv != PHOTOMETRIC_PALETTE) {

fprintf(stderr, "%s: Expecting a palette image.\n",

argv[optind]);

(void) TIFFClose(in);

return (-1);

}

if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {

fprintf(stderr,

"%s: No colormap (not a valid palette image).\n",

argv[optind]);

(void) TIFFClose(in);

return (-1);

}

bitspersample = 0;

TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);

if (bitspersample != 8) {

fprintf(stderr, "%s: Sorry, can only handle 8-bit images.\n",

argv[optind]);

(void) TIFFClose(in);

return (-1);

}

out = TIFFOpen(argv[optind+1], "w");

if (out == NULL) {

(void) TIFFClose(in);

return (-2);

}

cpTags(in, out);

TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &imagewidth);

TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);

if (compression != (uint16)-1)

TIFFSetField(out, TIFFTAG_COMPRESSION, compression);

else

TIFFGetField(in, TIFFTAG_COMPRESSION, &compression);

switch (compression) {

case COMPRESSION_JPEG:

if (jpegcolormode == JPEGCOLORMODE_RGB)

photometric = PHOTOMETRIC_YCBCR;

else

photometric = PHOTOMETRIC_RGB;

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;

}

TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);

TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);

TIFFSetField(out, TIFFTAG_PLANARCONFIG, config);

TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,

rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip));

(void) TIFFGetField(in, TIFFTAG_PLANARCONFIG, &shortv);

if (cmap == -1)

cmap = checkcmap(1<<bitspersample, rmap, gmap, bmap);

if (cmap == 16) {

/*

* Convert 16-bit colormap to 8-bit.

*/

int i;

for (i = (1<<bitspersample)-1; i >= 0; i--) {

#define CVT(x) (((x) * 255) / ((1L<<16)-1))

rmap[i] = CVT(rmap[i]);

gmap[i] = CVT(gmap[i]);

bmap[i] = CVT(bmap[i]);

}

}

{ unsigned char *ibuf, *obuf;

register unsigned char* pp;

register uint32 x;

tmsize_t tss_in = TIFFScanlineSize(in);

tmsize_t tss_out = TIFFScanlineSize(out);

if (tss_out / tss_in < 3) {

/*

* BUG 2750: The following code does not know about chroma

* subsampling of JPEG data. It assumes that the output buffer is 3x

* the length of the input buffer due to exploding the palette into

* RGB tuples. If this assumption is incorrect, it could lead to a

* buffer overflow. Go ahead and fail now to prevent that.

*/

fprintf(stderr, "Could not determine correct image size for output. Exiting.\n");

return -1;

}

ibuf = (unsigned char*)_TIFFmalloc(tss_in);

obuf = (unsigned char*)_TIFFmalloc(tss_out);

switch (config) {

case PLANARCONFIG_CONTIG:

for (row = 0; row < imagelength; row++) {

if (!TIFFReadScanline(in, ibuf, row, 0))

goto done;

pp = obuf;

for (x = 0; x < imagewidth; x++) {

*pp++ = (unsigned char) rmap[ibuf[x]];

*pp++ = (unsigned char) gmap[ibuf[x]];

*pp++ = (unsigned char) bmap[ibuf[x]];

}

if (!TIFFWriteScanline(out, obuf, row, 0))

goto done;

}

break;

case PLANARCONFIG_SEPARATE:

for (row = 0; row < imagelength; row++) {

if (!TIFFReadScanline(in, ibuf, row, 0))

goto done;

for (pp = obuf, x = 0; x < imagewidth; x++)

*pp++ = (unsigned char) rmap[ibuf[x]];

if (!TIFFWriteScanline(out, obuf, row, 0))

goto done;

for (pp = obuf, x = 0; x < imagewidth; x++)

*pp++ = (unsigned char) gmap[ibuf[x]];

if (!TIFFWriteScanline(out, obuf, row, 0))

goto done;

for (pp = obuf, x = 0; x < imagewidth; x++)

*pp++ = (unsigned char) bmap[ibuf[x]];

if (!TIFFWriteScanline(out, obuf, row, 0))

goto done;

}

break;

}

_TIFFfree(ibuf);

_TIFFfree(obuf);

}

done:

(void) TIFFClose(in);

(void) TIFFClose(out);

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, ':');

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, "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);

}

#define CopyField(tag, v) \

if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)

#define CopyField2(tag, v1, v2) \

if (TIFFGetField(in, tag, &v1, &v2)) TIFFSetField(out, tag, v1, v2)

#define CopyField3(tag, v1, v2, v3) \

if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)

#define CopyField4(tag, v1, v2, v3, v4) \

if (TIFFGetField(in, tag, &v1, &v2, &v3, &v4)) TIFFSetField(out, tag, v1, v2, v3, v4)

static void

cpTag(TIFF* in, TIFF* out, uint16 tag, uint16 count, TIFFDataType type)

{

switch (type) {

case TIFF_SHORT:

if (count == 1) {

uint16 shortv;

CopyField(tag, shortv);

} else if (count == 2) {

uint16 shortv1, shortv2;

CopyField2(tag, shortv1, shortv2);

} else if (count == 4) {

uint16 *tr, *tg, *tb, *ta;

CopyField4(tag, tr, tg, tb, ta);

} else if (count == (uint16) -1) {

uint16 shortv1;

uint16* shortav;

CopyField2(tag, shortv1, shortav);

}

break;

case TIFF_LONG:

{ uint32 longv;

CopyField(tag, longv);

}

break;

case TIFF_RATIONAL:

if (count == 1) {

float floatv;

CopyField(tag, floatv);

} else if (count == (uint16) -1) {

float* floatav;

CopyField(tag, floatav);

}

break;

case TIFF_ASCII:

{ char* stringv;

CopyField(tag, stringv);

}

break;

case TIFF_DOUBLE:

if (count == 1) {

double doublev;

CopyField(tag, doublev);

} else if (count == (uint16) -1) {

double* doubleav;

CopyField(tag, doubleav);

}

break;

default:

TIFFError(TIFFFileName(in),

"Data type %d is not supported, tag %d skipped.",

tag, type);

}

}

#undef CopyField4

#undef CopyField3

#undef CopyField2

#undef CopyField

static struct cpTag {

} tags[] = {

{ TIFFTAG_IMAGEWIDTH, 1, TIFF_LONG },

{ TIFFTAG_IMAGELENGTH, 1, TIFF_LONG },

{ TIFFTAG_BITSPERSAMPLE, 1, TIFF_SHORT },

{ TIFFTAG_COMPRESSION, 1, TIFF_SHORT },

{ TIFFTAG_FILLORDER, 1, TIFF_SHORT },

{ TIFFTAG_ROWSPERSTRIP, 1, TIFF_LONG },

{ TIFFTAG_GROUP3OPTIONS, 1, TIFF_LONG },

{ TIFFTAG_SUBFILETYPE, 1, TIFF_LONG },

{ TIFFTAG_THRESHHOLDING, 1, TIFF_SHORT },

{ TIFFTAG_DOCUMENTNAME, 1, TIFF_ASCII },

{ TIFFTAG_IMAGEDESCRIPTION, 1, TIFF_ASCII },

{ TIFFTAG_MAKE, 1, TIFF_ASCII },

{ TIFFTAG_MODEL, 1, TIFF_ASCII },

{ TIFFTAG_ORIENTATION, 1, TIFF_SHORT },

{ TIFFTAG_MINSAMPLEVALUE, 1, TIFF_SHORT },

{ TIFFTAG_MAXSAMPLEVALUE, 1, TIFF_SHORT },

{ TIFFTAG_XRESOLUTION, 1, TIFF_RATIONAL },

{ TIFFTAG_YRESOLUTION, 1, TIFF_RATIONAL },

{ TIFFTAG_PAGENAME, 1, TIFF_ASCII },

{ TIFFTAG_XPOSITION, 1, TIFF_RATIONAL },

{ TIFFTAG_YPOSITION, 1, TIFF_RATIONAL },

{ TIFFTAG_GROUP4OPTIONS, 1, TIFF_LONG },

{ TIFFTAG_RESOLUTIONUNIT, 1, TIFF_SHORT },

{ TIFFTAG_PAGENUMBER, 2, TIFF_SHORT },

{ TIFFTAG_SOFTWARE, 1, TIFF_ASCII },

{ TIFFTAG_DATETIME, 1, TIFF_ASCII },

{ TIFFTAG_ARTIST, 1, TIFF_ASCII },

{ TIFFTAG_HOSTCOMPUTER, 1, TIFF_ASCII },

{ TIFFTAG_WHITEPOINT, 2, TIFF_RATIONAL },

{ TIFFTAG_PRIMARYCHROMATICITIES, (uint16) -1,TIFF_RATIONAL },

{ TIFFTAG_HALFTONEHINTS, 2, TIFF_SHORT },

{ TIFFTAG_BADFAXLINES, 1, TIFF_LONG },

{ TIFFTAG_CLEANFAXDATA, 1, TIFF_SHORT },

{ TIFFTAG_CONSECUTIVEBADFAXLINES, 1, TIFF_LONG },

{ TIFFTAG_INKSET, 1, TIFF_SHORT },

/*{ TIFFTAG_INKNAMES, 1, TIFF_ASCII },*/ /* Needs much more complicated logic. See tiffcp */

{ TIFFTAG_DOTRANGE, 2, TIFF_SHORT },

{ TIFFTAG_TARGETPRINTER, 1, TIFF_ASCII },

{ TIFFTAG_SAMPLEFORMAT, 1, TIFF_SHORT },

{ TIFFTAG_YCBCRCOEFFICIENTS, (uint16) -1,TIFF_RATIONAL },

{ TIFFTAG_YCBCRSUBSAMPLING, 2, TIFF_SHORT },

{ TIFFTAG_YCBCRPOSITIONING, 1, TIFF_SHORT },

{ TIFFTAG_REFERENCEBLACKWHITE, (uint16) -1,TIFF_RATIONAL },

};

#define NTAGS (sizeof (tags) / sizeof (tags[0]))

static void

cpTags(TIFF* in, TIFF* out)

{

struct cpTag *p;

for (p = tags; p < &tags[NTAGS]; p++)

{

if( p->tag == TIFFTAG_GROUP3OPTIONS )

{

uint16 compression;

if( !TIFFGetField(in, TIFFTAG_COMPRESSION, &compression) ||

compression != COMPRESSION_CCITTFAX3 )

continue;

}

if( p->tag == TIFFTAG_GROUP4OPTIONS )

{

uint16 compression;

if( !TIFFGetField(in, TIFFTAG_COMPRESSION, &compression) ||

compression != COMPRESSION_CCITTFAX4 )

continue;

}

cpTag(in, out, p->tag, p->count, p->type);

}

}

#undef NTAGS

char* stuff[] = {

"usage: pal2rgb [options] input.tif output.tif",

"where options are:",

" -p contig pack samples contiguously (e.g. RGBRGB...)",

" -p separate store samples separately (e.g. RRR...GGG...BBB...)",

" -r # make each strip have no more than # rows",

" -C 8 assume 8-bit colormap values (instead of 16-bit)",

" -C 16 assume 16-bit colormap values",

"",

" -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",

"",

"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:

*/