[wxWidgets.git] / src / tiff / tools / ppm2tiff.c

/* $Id$ */

/*
 * 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, char**, char*);
#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);
}

int
main(int argc, char* argv[])
{
	uint16 photometric = 0;
	uint32 rowsperstrip = (uint32) -1;
	double resolution = -1;
	unsigned char *buf = NULL;
	tsize_t linebytes = 0;
	uint16 spp = 1;
	uint16 bpp = 8;
	TIFF *out;
	FILE *in;
	unsigned int w, h, prec, row;
	char *infile;
	int c;
	extern int optind;
	extern char* optarg;

	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:
			linebytes = (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 = spp * w;
			TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
			    TIFFDefaultStripSize(out, rowsperstrip));
			break;
	}
	if (TIFFScanlineSize(out) > linebytes)
		buf = (unsigned char *)_TIFFmalloc(linebytes);
	else
		buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
	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 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:
 */
Commit	Line	Data
8414a40c VZ	1	/* $Id$ */
	2
	3	/*
	4	* Copyright (c) 1991-1997 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 <stdlib.h>
	31	#include <string.h>
	32	#include <ctype.h>
	33
	34	#ifdef HAVE_UNISTD_H
	35	# include <unistd.h>
	36	#endif
	37
80ed523f VZ	38	#ifdef HAVE_FCNTL_H
	39	# include <fcntl.h>
	40	#endif
	41
	42	#ifdef HAVE_IO_H
	43	# include <io.h>
	44	#endif
	45
	46	#ifdef NEED_LIBPORT
	47	# include "libport.h"
	48	#endif
	49
8414a40c VZ	50	#include "tiffio.h"
	51
	52	#ifndef HAVE_GETOPT
	53	extern int getopt(int, char*, char);
	54	#endif
	55
8414a40c VZ	56	#define streq(a,b) (strcmp(a,b) == 0)
	57	#define strneq(a,b,n) (strncmp(a,b,n) == 0)
	58
	59	static uint16 compression = COMPRESSION_PACKBITS;
	60	static uint16 predictor = 0;
	61	static int quality = 75; /* JPEG quality */
	62	static int jpegcolormode = JPEGCOLORMODE_RGB;
	63	static uint32 g3opts;
	64
	65	static void usage(void);
	66	static int processCompressOptions(char*);
	67
	68	static void
	69	BadPPM(char* file)
	70	{
	71	fprintf(stderr, "%s: Not a PPM file.\n", file);
	72	exit(-2);
	73	}
	74
	75	int
	76	main(int argc, char* argv[])
	77	{
	78	uint16 photometric = 0;
	79	uint32 rowsperstrip = (uint32) -1;
	80	double resolution = -1;
	81	unsigned char *buf = NULL;
	82	tsize_t linebytes = 0;
	83	uint16 spp = 1;
	84	uint16 bpp = 8;
	85	TIFF *out;
	86	FILE *in;
	87	unsigned int w, h, prec, row;
	88	char *infile;
	89	int c;
	90	extern int optind;
	91	extern char* optarg;
	92
	93	if (argc < 2) {
	94	fprintf(stderr, "%s: Too few arguments\n", argv[0]);
	95	usage();
	96	}
	97	while ((c = getopt(argc, argv, "c:r:R:")) != -1)
	98	switch (c) {
	99	case 'c': /* compression scheme */
	100	if (!processCompressOptions(optarg))
	101	usage();
	102	break;
	103	case 'r': /* rows/strip */
	104	rowsperstrip = atoi(optarg);
	105	break;
	106	case 'R': /* resolution */
	107	resolution = atof(optarg);
	108	break;
	109	case '?':
	110	usage();
	111	/NOTREACHED/
	112	}
	113
	114	if (optind + 2 < argc) {
	115	fprintf(stderr, "%s: Too many arguments\n", argv[0]);
	116	usage();
	117	}
	118
	119	/*
120	* If only one file is specified, read input from
121	* stdin; otherwise usage is: ppm2tiff input output.
122	*/
123	if (argc - optind > 1) {
124	infile = argv[optind++];
80ed523f	125	in = fopen(infile, "rb");
8414a40c VZ	126	if (in == NULL) {
	127	fprintf(stderr, "%s: Can not open.\n", infile);
	128	return (-1);
	129	}
	130	} else {
	131	infile = "<stdin>";
	132	in = stdin;
80ed523f VZ	133	#if defined(HAVE_SETMODE) && defined(O_BINARY)
	134	setmode(fileno(stdin), O_BINARY);
	135	#endif
8414a40c VZ	136	}
	137
	138	if (fgetc(in) != 'P')
	139	BadPPM(infile);
	140	switch (fgetc(in)) {
	141	case '4': /* it's a PBM file */
	142	bpp = 1;
	143	spp = 1;
	144	photometric = PHOTOMETRIC_MINISWHITE;
	145	break;
	146	case '5': /* it's a PGM file */
	147	bpp = 8;
	148	spp = 1;
	149	photometric = PHOTOMETRIC_MINISBLACK;
	150	break;
	151	case '6': /* it's a PPM file */
	152	bpp = 8;
	153	spp = 3;
	154	photometric = PHOTOMETRIC_RGB;
	155	if (compression == COMPRESSION_JPEG &&
	156	jpegcolormode == JPEGCOLORMODE_RGB)
	157	photometric = PHOTOMETRIC_YCBCR;
	158	break;
	159	default:
	160	BadPPM(infile);
	161	}
	162
	163	/* Parse header */
	164	while(1) {
	165	if (feof(in))
	166	BadPPM(infile);
	167	c = fgetc(in);
	168	/* Skip whitespaces (blanks, TABs, CRs, LFs) */
	169	if (strchr(" \t\r\n", c))
	170	continue;
	171
	172	/* Check for comment line */
	173	if (c == '#') {
	174	do {
	175	c = fgetc(in);
80ed523f	176	} while(!(strchr("\r\n", c) \|\| feof(in)));
8414a40c VZ	177	continue;
	178	}
	179
	180	ungetc(c, in);
	181	break;
	182	}
	183	switch (bpp) {
	184	case 1:
	185	if (fscanf(in, " %u %u", &w, &h) != 2)
	186	BadPPM(infile);
	187	if (fgetc(in) != '\n')
	188	BadPPM(infile);
	189	break;
	190	case 8:
	191	if (fscanf(in, " %u %u %u", &w, &h, &prec) != 3)
	192	BadPPM(infile);
	193	if (fgetc(in) != '\n' \|\| prec != 255)
	194	BadPPM(infile);
	195	break;
	196	}
	197	out = TIFFOpen(argv[optind], "w");
	198	if (out == NULL)
	199	return (-4);
	200	TIFFSetField(out, TIFFTAG_IMAGEWIDTH, (uint32) w);
	201	TIFFSetField(out, TIFFTAG_IMAGELENGTH, (uint32) h);
	202	TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
	203	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, spp);
	204	TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, bpp);
	205	TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
	206	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
	207	TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
	208	switch (compression) {
	209	case COMPRESSION_JPEG:
	210	TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
	211	TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
	212	break;
	213	case COMPRESSION_LZW:
	214	case COMPRESSION_DEFLATE:
	215	if (predictor != 0)
	216	TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
	217	break;
	218	case COMPRESSION_CCITTFAX3:
	219	TIFFSetField(out, TIFFTAG_GROUP3OPTIONS, g3opts);
	220	break;
	221	}
	222	switch (bpp) {
	223	case 1:
	224	linebytes = (spp * w + (8 - 1)) / 8;
	225	if (rowsperstrip == (uint32) -1) {
	226	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, h);
	227	} else {
	228	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
	229	TIFFDefaultStripSize(out, rowsperstrip));
	230	}
	231	break;
	232	case 8:
	233	linebytes = spp * w;
	234	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
	235	TIFFDefaultStripSize(out, rowsperstrip));
	236	break;
	237	}
	238	if (TIFFScanlineSize(out) > linebytes)
	239	buf = (unsigned char *)_TIFFmalloc(linebytes);
	240	else
241	buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
242	if (resolution > 0) {
243	TIFFSetField(out, TIFFTAG_XRESOLUTION, resolution);
244	TIFFSetField(out, TIFFTAG_YRESOLUTION, resolution);
245	TIFFSetField(out, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH);
246	}
247	for (row = 0; row < h; row++) {
248	if (fread(buf, linebytes, 1, in) != 1) {
249	fprintf(stderr, "%s: scanline %lu: Read error.\n",
250	infile, (unsigned long) row);
251	break;
252	}
253	if (TIFFWriteScanline(out, buf, row, 0) < 0)
254	break;
255	}
256	(void) TIFFClose(out);
257	if (buf)
258	_TIFFfree(buf);
259	return (0);
260	}
261
262	static void
263	processG3Options(char* cp)
264	{
265	g3opts = 0;
266	if( (cp = strchr(cp, ':')) ) {
267	do {
268	cp++;
269	if (strneq(cp, "1d", 2))
270	g3opts &= ~GROUP3OPT_2DENCODING;
271	else if (strneq(cp, "2d", 2))
272	g3opts \|= GROUP3OPT_2DENCODING;
273	else if (strneq(cp, "fill", 4))
274	g3opts \|= GROUP3OPT_FILLBITS;
275	else
276	usage();
277	} while( (cp = strchr(cp, ':')) );
278	}
279	}
280
281	static int
282	processCompressOptions(char* opt)
283	{
284	if (streq(opt, "none"))
285	compression = COMPRESSION_NONE;
286	else if (streq(opt, "packbits"))
287	compression = COMPRESSION_PACKBITS;
288	else if (strneq(opt, "jpeg", 4)) {
289	char* cp = strchr(opt, ':');
290
291	compression = COMPRESSION_JPEG;
292	while (cp)
293	{
294	if (isdigit((int)cp[1]))
295	quality = atoi(cp+1);
296	else if (cp[1] == 'r' )
297	jpegcolormode = JPEGCOLORMODE_RAW;
298	else
299	usage();
300
301	cp = strchr(cp+1,':');
302	}
303	} else if (strneq(opt, "g3", 2)) {
304	processG3Options(opt);
305	compression = COMPRESSION_CCITTFAX3;
306	} else if (streq(opt, "g4")) {
307	compression = COMPRESSION_CCITTFAX4;
308	} else if (strneq(opt, "lzw", 3)) {
309	char* cp = strchr(opt, ':');
310	if (cp)
311	predictor = atoi(cp+1);
312	compression = COMPRESSION_LZW;
313	} else if (strneq(opt, "zip", 3)) {
314	char* cp = strchr(opt, ':');
315	if (cp)
316	predictor = atoi(cp+1);
317	compression = COMPRESSION_DEFLATE;
318	} else
319	return (0);
320	return (1);
321	}
322
323	char* stuff[] = {
324	"usage: ppm2tiff [options] input.ppm output.tif",
325	"where options are:",
326	" -r # make each strip have no more than # rows",
327	" -R # set x&y resolution (dpi)",
328	"",
329	" -c jpeg[:opts] compress output with JPEG encoding",
330	" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
331	" -c zip[:opts] compress output with deflate encoding",
332	" -c packbits compress output with packbits encoding (the default)",
333	" -c g3[:opts] compress output with CCITT Group 3 encoding",
334	" -c g4 compress output with CCITT Group 4 encoding",
335	" -c none use no compression algorithm on output",
336	"",
337	"JPEG options:",
338	" # set compression quality level (0-100, default 75)",
339	" r output color image as RGB rather than YCbCr",
340	"LZW and deflate options:",
341	" # set predictor value",
342	"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing",
343	NULL
344	};
345
346	static void
347	usage(void)
348	{
349	char buf[BUFSIZ];
350	int i;
351
352	setbuf(stderr, buf);
353	fprintf(stderr, "%s\n\n", TIFFGetVersion());
354	for (i = 0; stuff[i] != NULL; i++)
355	fprintf(stderr, "%s\n", stuff[i]);
356	exit(-1);
357	}
358
359	/* vim: set ts=8 sts=8 sw=8 noet: */
80ed523f VZ	360	/*
	361	* Local Variables:
	362	* mode: c
	363	* c-basic-offset: 8
	364	* fill-column: 78
	365	* End:
	366	*/