[wxWidgets.git] / 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
8414a40c VZ	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: */