src/tiff/tools/pal2rgb.c

/* $Id$ */

/*
 * 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

#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;
	extern int optind;
	extern char* optarg;

	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]);
		return (-1);
	}
	if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
		fprintf(stderr,
		    "%s: No colormap (not a valid palette image).\n",
		    argv[optind]);
		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]);
		return (-1);
	}
	out = TIFFOpen(argv[optind+1], "w");
	if (out == NULL)
		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;
	  ibuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(in));
	  obuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(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 {
    uint16	tag;
    uint16	count;
    TIFFDataType type;
} 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,		1, 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 },
    { 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++)
	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: */
Commit	Line	Data
	1	/* $Id$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	#include "tif_config.h"
	28
	29	#include <stdio.h>
	30	#include <string.h>
	31	#include <stdlib.h>
	32	#include <ctype.h>
	33
	34	#ifdef HAVE_UNISTD_H
	35	# include <unistd.h>
	36	#endif
	37
	38	#include "tiffio.h"
	39
	40	#define streq(a,b) (strcmp(a,b) == 0)
	41	#define strneq(a,b,n) (strncmp(a,b,n) == 0)
	42
	43	static void usage(void);
	44	static void cpTags(TIFF* in, TIFF* out);
	45
	46	static int
	47	checkcmap(int n, uint16* r, uint16* g, uint16* b)
	48	{
	49	while (n-- > 0)
	50	if (r++ >= 256 \|\| g++ >= 256 \|\| *b++ >= 256)
	51	return (16);
	52	fprintf(stderr, "Warning, assuming 8-bit colormap.\n");
	53	return (8);
	54	}
	55
	56	#define CopyField(tag, v) \
	57	if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
	58	#define CopyField3(tag, v1, v2, v3) \
	59	if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)
	60
	61	static uint16 compression = (uint16) -1;
	62	static uint16 predictor = 0;
	63	static int quality = 75; /* JPEG quality */
	64	static int jpegcolormode = JPEGCOLORMODE_RGB;
	65	static int processCompressOptions(char*);
	66
	67	int
	68	main(int argc, char* argv[])
	69	{
	70	uint16 bitspersample, shortv;
	71	uint32 imagewidth, imagelength;
	72	uint16 config = PLANARCONFIG_CONTIG;
	73	uint32 rowsperstrip = (uint32) -1;
	74	uint16 photometric = PHOTOMETRIC_RGB;
	75	uint16 rmap, gmap, *bmap;
	76	uint32 row;
	77	int cmap = -1;
	78	TIFF in, out;
	79	int c;
	80	extern int optind;
	81	extern char* optarg;
	82
	83	while ((c = getopt(argc, argv, "C:c:p:r:")) != -1)
	84	switch (c) {
	85	case 'C': /* force colormap interpretation */
	86	cmap = atoi(optarg);
	87	break;
	88	case 'c': /* compression scheme */
	89	if (!processCompressOptions(optarg))
	90	usage();
	91	break;
	92	case 'p': /* planar configuration */
	93	if (streq(optarg, "separate"))
	94	config = PLANARCONFIG_SEPARATE;
	95	else if (streq(optarg, "contig"))
	96	config = PLANARCONFIG_CONTIG;
	97	else
	98	usage();
	99	break;
	100	case 'r': /* rows/strip */
	101	rowsperstrip = atoi(optarg);
	102	break;
	103	case '?':
	104	usage();
	105	/NOTREACHED/
	106	}
	107	if (argc - optind != 2)
	108	usage();
	109	in = TIFFOpen(argv[optind], "r");
	110	if (in == NULL)
	111	return (-1);
	112	if (!TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &shortv) \|\|
	113	shortv != PHOTOMETRIC_PALETTE) {
	114	fprintf(stderr, "%s: Expecting a palette image.\n",
	115	argv[optind]);
	116	return (-1);
	117	}
	118	if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
	119	fprintf(stderr,
	120	"%s: No colormap (not a valid palette image).\n",
	121	argv[optind]);
	122	return (-1);
	123	}
	124	bitspersample = 0;
	125	TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
	126	if (bitspersample != 8) {
	127	fprintf(stderr, "%s: Sorry, can only handle 8-bit images.\n",
	128	argv[optind]);
	129	return (-1);
	130	}
	131	out = TIFFOpen(argv[optind+1], "w");
	132	if (out == NULL)
	133	return (-2);
	134	cpTags(in, out);
	135	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &imagewidth);
	136	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
	137	if (compression != (uint16)-1)
	138	TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
	139	else
	140	TIFFGetField(in, TIFFTAG_COMPRESSION, &compression);
	141	switch (compression) {
	142	case COMPRESSION_JPEG:
	143	if (jpegcolormode == JPEGCOLORMODE_RGB)
	144	photometric = PHOTOMETRIC_YCBCR;
	145	else
	146	photometric = PHOTOMETRIC_RGB;
	147	TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
	148	TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
	149	break;
	150	case COMPRESSION_LZW:
	151	case COMPRESSION_DEFLATE:
	152	if (predictor != 0)
	153	TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
	154	break;
	155	}
	156	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
	157	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
	158	TIFFSetField(out, TIFFTAG_PLANARCONFIG, config);
	159	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
	160	rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip));
	161	(void) TIFFGetField(in, TIFFTAG_PLANARCONFIG, &shortv);
	162	if (cmap == -1)
	163	cmap = checkcmap(1<<bitspersample, rmap, gmap, bmap);
	164	if (cmap == 16) {
	165	/*
	166	* Convert 16-bit colormap to 8-bit.
	167	*/
	168	int i;
	169
	170	for (i = (1<<bitspersample)-1; i >= 0; i--) {
	171	#define CVT(x) (((x) * 255) / ((1L<<16)-1))
	172	rmap[i] = CVT(rmap[i]);
	173	gmap[i] = CVT(gmap[i]);
	174	bmap[i] = CVT(bmap[i]);
	175	}
	176	}
	177	{ unsigned char ibuf, obuf;
	178	register unsigned char* pp;
	179	register uint32 x;
	180	ibuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(in));
	181	obuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(out));
	182	switch (config) {
	183	case PLANARCONFIG_CONTIG:
	184	for (row = 0; row < imagelength; row++) {
	185	if (!TIFFReadScanline(in, ibuf, row, 0))
	186	goto done;
	187	pp = obuf;
	188	for (x = 0; x < imagewidth; x++) {
	189	*pp++ = (unsigned char) rmap[ibuf[x]];
	190	*pp++ = (unsigned char) gmap[ibuf[x]];
	191	*pp++ = (unsigned char) bmap[ibuf[x]];
	192	}
	193	if (!TIFFWriteScanline(out, obuf, row, 0))
	194	goto done;
	195	}
	196	break;
	197	case PLANARCONFIG_SEPARATE:
	198	for (row = 0; row < imagelength; row++) {
	199	if (!TIFFReadScanline(in, ibuf, row, 0))
	200	goto done;
	201	for (pp = obuf, x = 0; x < imagewidth; x++)
	202	*pp++ = (unsigned char) rmap[ibuf[x]];
	203	if (!TIFFWriteScanline(out, obuf, row, 0))
	204	goto done;
	205	for (pp = obuf, x = 0; x < imagewidth; x++)
	206	*pp++ = (unsigned char) gmap[ibuf[x]];
	207	if (!TIFFWriteScanline(out, obuf, row, 0))
	208	goto done;
	209	for (pp = obuf, x = 0; x < imagewidth; x++)
	210	*pp++ = (unsigned char) bmap[ibuf[x]];
	211	if (!TIFFWriteScanline(out, obuf, row, 0))
	212	goto done;
	213	}
	214	break;
	215	}
	216	_TIFFfree(ibuf);
	217	_TIFFfree(obuf);
	218	}
	219	done:
	220	(void) TIFFClose(in);
	221	(void) TIFFClose(out);
	222	return (0);
	223	}
	224
	225	static int
	226	processCompressOptions(char* opt)
	227	{
	228	if (streq(opt, "none"))
	229	compression = COMPRESSION_NONE;
	230	else if (streq(opt, "packbits"))
	231	compression = COMPRESSION_PACKBITS;
	232	else if (strneq(opt, "jpeg", 4)) {
	233	char* cp = strchr(opt, ':');
	234
	235	compression = COMPRESSION_JPEG;
	236	while( cp )
	237	{
	238	if (isdigit((int)cp[1]))
	239	quality = atoi(cp+1);
	240	else if (cp[1] == 'r' )
	241	jpegcolormode = JPEGCOLORMODE_RAW;
	242	else
	243	usage();
	244
	245	cp = strchr(cp+1,':');
	246	}
	247	} else if (strneq(opt, "lzw", 3)) {
	248	char* cp = strchr(opt, ':');
	249	if (cp)
	250	predictor = atoi(cp+1);
	251	compression = COMPRESSION_LZW;
	252	} else if (strneq(opt, "zip", 3)) {
	253	char* cp = strchr(opt, ':');
	254	if (cp)
	255	predictor = atoi(cp+1);
	256	compression = COMPRESSION_DEFLATE;
	257	} else
	258	return (0);
	259	return (1);
	260	}
	261
	262	#define CopyField(tag, v) \
	263	if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
	264	#define CopyField2(tag, v1, v2) \
	265	if (TIFFGetField(in, tag, &v1, &v2)) TIFFSetField(out, tag, v1, v2)
	266	#define CopyField3(tag, v1, v2, v3) \
	267	if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)
	268	#define CopyField4(tag, v1, v2, v3, v4) \
	269	if (TIFFGetField(in, tag, &v1, &v2, &v3, &v4)) TIFFSetField(out, tag, v1, v2, v3, v4)
	270
	271	static void
	272	cpTag(TIFF* in, TIFF* out, uint16 tag, uint16 count, TIFFDataType type)
	273	{
	274	switch (type) {
	275	case TIFF_SHORT:
	276	if (count == 1) {
	277	uint16 shortv;
	278	CopyField(tag, shortv);
	279	} else if (count == 2) {
	280	uint16 shortv1, shortv2;
	281	CopyField2(tag, shortv1, shortv2);
	282	} else if (count == 4) {
	283	uint16 tr, tg, tb, ta;
	284	CopyField4(tag, tr, tg, tb, ta);
	285	} else if (count == (uint16) -1) {
	286	uint16 shortv1;
	287	uint16* shortav;
	288	CopyField2(tag, shortv1, shortav);
	289	}
	290	break;
	291	case TIFF_LONG:
	292	{ uint32 longv;
	293	CopyField(tag, longv);
	294	}
	295	break;
	296	case TIFF_RATIONAL:
	297	if (count == 1) {
	298	float floatv;
	299	CopyField(tag, floatv);
	300	} else if (count == (uint16) -1) {
	301	float* floatav;
	302	CopyField(tag, floatav);
	303	}
	304	break;
	305	case TIFF_ASCII:
	306	{ char* stringv;
	307	CopyField(tag, stringv);
	308	}
	309	break;
	310	case TIFF_DOUBLE:
	311	if (count == 1) {
	312	double doublev;
	313	CopyField(tag, doublev);
	314	} else if (count == (uint16) -1) {
	315	double* doubleav;
	316	CopyField(tag, doubleav);
	317	}
	318	break;
	319	default:
	320	TIFFError(TIFFFileName(in),
	321	"Data type %d is not supported, tag %d skipped.",
	322	tag, type);
	323	}
	324	}
	325
	326	#undef CopyField4
	327	#undef CopyField3
	328	#undef CopyField2
	329	#undef CopyField
	330
	331	static struct cpTag {
	332	uint16 tag;
	333	uint16 count;
	334	TIFFDataType type;
	335	} tags[] = {
	336	{ TIFFTAG_IMAGEWIDTH, 1, TIFF_LONG },
	337	{ TIFFTAG_IMAGELENGTH, 1, TIFF_LONG },
	338	{ TIFFTAG_BITSPERSAMPLE, 1, TIFF_SHORT },
	339	{ TIFFTAG_COMPRESSION, 1, TIFF_SHORT },
	340	{ TIFFTAG_FILLORDER, 1, TIFF_SHORT },
	341	{ TIFFTAG_ROWSPERSTRIP, 1, TIFF_LONG },
	342	{ TIFFTAG_GROUP3OPTIONS, 1, TIFF_LONG },
	343	{ TIFFTAG_SUBFILETYPE, 1, TIFF_LONG },
	344	{ TIFFTAG_THRESHHOLDING, 1, TIFF_SHORT },
	345	{ TIFFTAG_DOCUMENTNAME, 1, TIFF_ASCII },
	346	{ TIFFTAG_IMAGEDESCRIPTION, 1, TIFF_ASCII },
	347	{ TIFFTAG_MAKE, 1, TIFF_ASCII },
	348	{ TIFFTAG_MODEL, 1, TIFF_ASCII },
	349	{ TIFFTAG_ORIENTATION, 1, TIFF_SHORT },
	350	{ TIFFTAG_MINSAMPLEVALUE, 1, TIFF_SHORT },
	351	{ TIFFTAG_MAXSAMPLEVALUE, 1, TIFF_SHORT },
	352	{ TIFFTAG_XRESOLUTION, 1, TIFF_RATIONAL },
	353	{ TIFFTAG_YRESOLUTION, 1, TIFF_RATIONAL },
	354	{ TIFFTAG_PAGENAME, 1, TIFF_ASCII },
	355	{ TIFFTAG_XPOSITION, 1, TIFF_RATIONAL },
	356	{ TIFFTAG_YPOSITION, 1, TIFF_RATIONAL },
	357	{ TIFFTAG_GROUP4OPTIONS, 1, TIFF_LONG },
	358	{ TIFFTAG_RESOLUTIONUNIT, 1, TIFF_SHORT },
	359	{ TIFFTAG_PAGENUMBER, 2, TIFF_SHORT },
	360	{ TIFFTAG_SOFTWARE, 1, TIFF_ASCII },
	361	{ TIFFTAG_DATETIME, 1, TIFF_ASCII },
	362	{ TIFFTAG_ARTIST, 1, TIFF_ASCII },
	363	{ TIFFTAG_HOSTCOMPUTER, 1, TIFF_ASCII },
	364	{ TIFFTAG_WHITEPOINT, 1, TIFF_RATIONAL },
	365	{ TIFFTAG_PRIMARYCHROMATICITIES, (uint16) -1,TIFF_RATIONAL },
	366	{ TIFFTAG_HALFTONEHINTS, 2, TIFF_SHORT },
	367	{ TIFFTAG_BADFAXLINES, 1, TIFF_LONG },
	368	{ TIFFTAG_CLEANFAXDATA, 1, TIFF_SHORT },
	369	{ TIFFTAG_CONSECUTIVEBADFAXLINES, 1, TIFF_LONG },
	370	{ TIFFTAG_INKSET, 1, TIFF_SHORT },
	371	{ TIFFTAG_INKNAMES, 1, TIFF_ASCII },
	372	{ TIFFTAG_DOTRANGE, 2, TIFF_SHORT },
	373	{ TIFFTAG_TARGETPRINTER, 1, TIFF_ASCII },
	374	{ TIFFTAG_SAMPLEFORMAT, 1, TIFF_SHORT },
	375	{ TIFFTAG_YCBCRCOEFFICIENTS, (uint16) -1,TIFF_RATIONAL },
	376	{ TIFFTAG_YCBCRSUBSAMPLING, 2, TIFF_SHORT },
	377	{ TIFFTAG_YCBCRPOSITIONING, 1, TIFF_SHORT },
	378	{ TIFFTAG_REFERENCEBLACKWHITE, (uint16) -1,TIFF_RATIONAL },
	379	};
	380	#define NTAGS (sizeof (tags) / sizeof (tags[0]))
	381
	382	static void
	383	cpTags(TIFF* in, TIFF* out)
	384	{
	385	struct cpTag *p;
	386	for (p = tags; p < &tags[NTAGS]; p++)
	387	cpTag(in, out, p->tag, p->count, p->type);
	388	}
	389	#undef NTAGS
	390
	391	char* stuff[] = {
	392	"usage: pal2rgb [options] input.tif output.tif",
	393	"where options are:",
	394	" -p contig pack samples contiguously (e.g. RGBRGB...)",
	395	" -p separate store samples separately (e.g. RRR...GGG...BBB...)",
	396	" -r # make each strip have no more than # rows",
	397	" -C 8 assume 8-bit colormap values (instead of 16-bit)",
	398	" -C 16 assume 16-bit colormap values",
	399	"",
	400	" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
	401	" -c zip[:opts] compress output with deflate encoding",
	402	" -c packbits compress output with packbits encoding",
	403	" -c none use no compression algorithm on output",
	404	"",
	405	"LZW and deflate options:",
	406	" # set predictor value",
	407	"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing",
	408	NULL
	409	};
	410
	411	static void
	412	usage(void)
	413	{
	414	char buf[BUFSIZ];
	415	int i;
	416
	417	setbuf(stderr, buf);
	418	fprintf(stderr, "%s\n\n", TIFFGetVersion());
	419	for (i = 0; stuff[i] != NULL; i++)
	420	fprintf(stderr, "%s\n", stuff[i]);
	421	exit(-1);
	422	}
	423
	424	/* vim: set ts=8 sts=8 sw=8 noet: */