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

#include "tiffio.h"

#ifndef HAVE_GETOPT
extern int getopt(int, char**, char*);
#endif

#if defined(_WINDOWS) || defined(MSDOS)
#define BINMODE "b"
#else
#define	BINMODE
#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, "r" BINMODE);
		if (in == NULL) {
			fprintf(stderr, "%s: Can not open.\n", infile);
			return (-1);
		}
	} else {
		infile = "<stdin>";
		in = stdin;
	}

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