src/px/normtiff.c

/* Copyright (c) 1998 Silicon Graphics, Inc. */

#ifndef lint
static char SCCSid[] = "$SunId$ SGI";
#endif

/*
 * Tone map SGILOG TIFF or Radiance picture and output 24-bit RGB TIFF
 */

#undef NOPROTO
#define NOPROTO 1

#include <stdio.h>
#include <math.h>
#include "tiffio.h"
#include "color.h"
#include "tonemap.h"
#include "resolu.h"


TIFF    *tifout;                        /* TIFF output */
int     flags = TM_F_CAMERA;            /* tone-mapping flags */
RGBPRIMP        rgbp = stdprims;        /* display primaries */
RGBPRIMS        myprims;                /* overriding display primaries */
double  ldmax = 100.;                   /* maximum display luminance */
double  lddyn = 32.;                    /* display dynamic range */
double  gamv = 2.2;                     /* display gamma value */

short   ortab[8] = {            /* orientation conversion table */
        YMAJOR|YDECR,
        YMAJOR|YDECR|XDECR,
        YMAJOR|XDECR,
        YMAJOR,
        YDECR,
        XDECR|YDECR,
        XDECR,
        0
};

typedef struct {
        FILE    *fp;            /* file pointer */
        char    fmt[32];        /* picture format */
        double  pa;             /* pixel aspect ratio */
        RESOLU  rs;             /* picture resolution */
} PICTURE;

extern PICTURE  *openpicture();

#define closepicture(p)         (fclose((p)->fp),free((char *)(p)))


main(argc, argv)
int     argc;
char    *argv[];
{
        PICTURE *pin = NULL;
        TIFF    *tin = NULL;
        int     i, rval;

        for (i = 1; i < argc && argv[i][0] == '-'; i++)
                switch (argv[i][1]) {
                case 'h':                       /* human observer settings */
                        flags = TM_F_HUMAN;
                        break;
                case 's':                       /* toggle human contrast */
                        flags ^= TM_F_HCONTR;
                        break;
                case 'c':                       /* toggle mesopic sens. */
                        flags ^= TM_F_MESOPIC;
                        break;
                case 'l':                       /* toggle linear mapping */
                        flags ^= TM_F_LINEAR;
                        break;
                case 'b':                       /* toggle greyscale output */
                        flags ^= TM_F_BW;
                        break;
                case 'g':                       /* set display gamma */
                        if (argc-i < 2) goto userr;
                        gamv = atof(argv[++i]);
                        break;
                case 'u':                       /* set display maximum */
                        if (argc-i < 2) goto userr;
                        ldmax = atof(argv[++i]);
                        break;
                case 'd':                       /* set display dynamic range */
                        if (argc-i < 2) goto userr;
                        lddyn = atof(argv[++i]);
                        break;
                case 'p':                       /* set display primaries */
                        if (argc-i < 9) goto userr;
                        myprims[RED][CIEX] = atof(argv[++i]);
                        myprims[RED][CIEY] = atof(argv[++i]);
                        myprims[GRN][CIEX] = atof(argv[++i]);
                        myprims[GRN][CIEY] = atof(argv[++i]);
                        myprims[BLU][CIEX] = atof(argv[++i]);
                        myprims[BLU][CIEY] = atof(argv[++i]);
                        myprims[WHT][CIEX] = atof(argv[++i]);
                        myprims[WHT][CIEY] = atof(argv[++i]);
                        rgbp = myprims;
                        break;
                default:
                        goto userr;
                }
        if (argc-i < 2) goto userr;
        if ((pin = openpicture(argv[i])) == NULL &&
                        (tin = TIFFOpen(argv[i], "r")) == NULL) {
                fprintf(stderr, "%s: cannot open or interpret file \"%s\"\n",
                                argv[0], argv[i]);
                exit(1);
        }
        if ((tifout = TIFFOpen(argv[i+1], "w")) == NULL) {
                fprintf(stderr, "%s: cannot open output TIFF \"%s\"\n",
                                argv[0], argv[i+1]);
                exit(1);
        }
        if (pin != NULL) {
                rval = tmap_picture(argv[i], pin);
                closepicture(pin);
        } else {
                rval = tmap_tiff(argv[i], tin);
                TIFFClose(tin);
        }
        TIFFClose(tifout);
        exit(rval==0 ? 0 : 1);
userr:
        fprintf(stderr,
"Usage: %s [-h][-s][-c][-l][-b][-g gv][-d ld][-u lm][-p xr yr xg yg xb yb xw yw] input.{tif|pic} output.tif\n",
                        argv[0]);
        exit(1);
}


int
headline(s, pp)                         /* process line from header */
char    *s;
register PICTURE        *pp;
{
        register char   *cp;

        for (cp = s; *cp; cp++)
                if (*cp & 0x80)
                        return(-1);     /* non-ascii in header */
        if (isaspect(s))
                pp->pa *= aspectval(s);
        else
                formatval(pp->fmt, s);
        return(0);
}


PICTURE *
openpicture(fname)                      /* open/check Radiance picture file */
char    *fname;
{
        FILE    *fp;
        register PICTURE        *pp;
        register char   *cp;
                                        /* check filename suffix */
        if (fname == NULL) return(NULL);
        for (cp = fname; *cp; cp++)
                ;
        while (cp > fname && cp[-1] != '.')
                if (*--cp == '/') {
                        cp = fname;
                        break;
                }
        if (cp > fname && !strncmp(cp, "tif", 3))
                return(NULL);           /* assume it's a TIFF */
                                        /* else try opening it */
        if ((fp = fopen(fname, "r")) == NULL)
                return(NULL);
                                        /* allocate struct */
        if ((pp = (PICTURE *)malloc(sizeof(PICTURE))) == NULL)
                return(NULL);           /* serious error -- should exit? */
        pp->fp = fp; pp->fmt[0] = '\0'; pp->pa = 1.;
                                        /* load header */
        if (getheader(fp, headline, pp) < 0) {
                closepicture(pp);
                return(NULL);
        }
        if (!pp->fmt[0])                /* assume RGBE if unspecified */
                strcpy(pp->fmt, COLRFMT);
        if (!globmatch(PICFMT, pp->fmt) || !fgetsresolu(&pp->rs, fp)) {
                closepicture(pp);       /* failed test -- close file */
                return(NULL);
        }
        rewind(fp);                     /* passed test -- rewind file */
        return(pp);
}


int
tmap_picture(fname, pp)                 /* tone map Radiance picture */
char    *fname;
register PICTURE        *pp;
{
        uint16  orient;
        int     xsiz, ysiz;
        BYTE    *pix;
                                        /* read and tone map picture */
        if (tmMapPicture(&pix, &xsiz, &ysiz, flags,
                        rgbp, gamv, lddyn, ldmax, fname, pp->fp) != TM_E_OK)
                return(-1);
                                        /* figure out TIFF orientation */
        for (orient = 8; --orient; )
                if (ortab[orient] == pp->rs.or)
                        break;
        orient++;
                                        /* put out our image */
        if (putimage(orient, (uint32)xsiz, (uint32)ysiz,
                        72., 72./pp->pa, 2, pix) != 0)
                return(-1);
                                        /* free data and we're done */
        free((char *)pix);
        return(0);
}


tmap_tiff(fname, tp)                    /* tone map SGILOG TIFF */
char    *fname;
TIFF    *tp;
{
        float   xres, yres;
        uint16  orient, resunit, phot;
        int     xsiz, ysiz;
        BYTE    *pix;
                                        /* check to make sure it's SGILOG */
        TIFFGetFieldDefaulted(tp, TIFFTAG_PHOTOMETRIC, &phot);
        if (phot != PHOTOMETRIC_LOGLUV && phot != PHOTOMETRIC_LOGL) {
                if (!(flags & TM_F_NOSTDERR)) {
                        fputs(fname, stderr);
                        fputs(": TIFF must be in SGILOG format\n", stderr);
                }
                return(-1);
        }
        if (phot == PHOTOMETRIC_LOGL)
                flags |= TM_F_BW;
                                        /* read and tone map TIFF */
        if (tmMapTIFF(&pix, &xsiz, &ysiz, flags,
                        rgbp, gamv, lddyn, ldmax, fname, tp) != TM_E_OK)
                return(-1);
                                        /* get relevant tags */
        TIFFGetFieldDefaulted(tp, TIFFTAG_RESOLUTIONUNIT, &resunit);
        TIFFGetFieldDefaulted(tp, TIFFTAG_XRESOLUTION, &xres);
        TIFFGetFieldDefaulted(tp, TIFFTAG_YRESOLUTION, &yres);
        TIFFGetFieldDefaulted(tp, TIFFTAG_ORIENTATION, &orient);
                                        /* put out our image */
        if (putimage(orient, (uint32)xsiz, (uint32)ysiz,
                        xres, yres, resunit, pix) != 0)
                return(-1);
                                        /* free data and we're done */
        free((char *)pix);
        return(0);
}


putimage(or, xs, ys, xr, yr, ru, pd)    /* write out our image */
uint16  or;
uint32  xs, ys;
float   xr, yr;
uint16 ru;
BYTE    *pd;
{
        register int    y;
        uint32  rowsperstrip;

        TIFFSetField(tifout, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
        if (flags & TM_F_BW) {
                TIFFSetField(tifout, TIFFTAG_PHOTOMETRIC,
                                PHOTOMETRIC_MINISBLACK);
                TIFFSetField(tifout, TIFFTAG_SAMPLESPERPIXEL, 1);
        } else {
                TIFFSetField(tifout, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
                TIFFSetField(tifout, TIFFTAG_SAMPLESPERPIXEL, 3);
        }
        if (rgbp != stdprims) {
                TIFFSetField(tifout, TIFFTAG_PRIMARYCHROMATICITIES,
                                (float *)rgbp);
                TIFFSetField(tifout, TIFFTAG_WHITEPOINT, (float *)rgbp[WHT]);
        }
        TIFFSetField(tifout, TIFFTAG_BITSPERSAMPLE, 8);
        TIFFSetField(tifout, TIFFTAG_IMAGEWIDTH, xs);
        TIFFSetField(tifout, TIFFTAG_IMAGELENGTH, ys);
        TIFFSetField(tifout, TIFFTAG_RESOLUTIONUNIT, ru);
        TIFFSetField(tifout, TIFFTAG_XRESOLUTION, xr);
        TIFFSetField(tifout, TIFFTAG_YRESOLUTION, yr);
        TIFFSetField(tifout, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
        TIFFSetField(tifout, TIFFTAG_ORIENTATION, or);
                                        /* compute good strip size */
        rowsperstrip = 8192/TIFFScanlineSize(tifout);
        if (rowsperstrip < 1) rowsperstrip = 1;
        TIFFSetField(tifout, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
                                        /* write out scanlines */
        if (flags & TM_F_BW) {
                for (y = 0; y < ys; y++)
                        if (TIFFWriteScanline(tifout, pd + y*xs, y, 0) < 0)
                                goto writerr;
        } else {
                for (y = 0; y < ys; y++)
                        if (TIFFWriteScanline(tifout, pd + y*3*xs, y, 0) < 0)
                                goto writerr;
        }
        return(0);                      /* all done! */
writerr:
        fputs("Error writing TIFF output\n", stderr);
        return(-1);
}
Revision:	3.3
Committed:	Tue Oct 27 08:54:37 1998 UTC (25 years, 6 months ago) by gwlarson
Content type:	text/plain
Branch:	MAIN
Changes since 3.2:	+57 -40 lines
Log Message:	modified openpicture to store header information changed getheader() to listen to return value of passed function
#	User	Rev	Content
1	gwlarson	3.1	/* Copyright (c) 1998 Silicon Graphics, Inc. */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ SGI";
5			#endif
6
7			/*
8			* Tone map SGILOG TIFF or Radiance picture and output 24-bit RGB TIFF
9			*/
10
11			#undef NOPROTO
12			#define NOPROTO 1
13
14			#include <stdio.h>
15			#include <math.h>
16			#include "tiffio.h"
17			#include "color.h"
18			#include "tonemap.h"
19			#include "resolu.h"
20
21
22			TIFF tifout; / TIFF output */
23			int flags = TM_F_CAMERA; /* tone-mapping flags */
24			RGBPRIMP rgbp = stdprims; /* display primaries */
25			RGBPRIMS myprims; /* overriding display primaries */
26			double ldmax = 100.; /* maximum display luminance */
27			double lddyn = 32.; /* display dynamic range */
28			double gamv = 2.2; /* display gamma value */
29
30			short ortab[8] = { /* orientation conversion table */
31			YMAJOR\|YDECR,
32			YMAJOR\|YDECR\|XDECR,
33			YMAJOR\|XDECR,
34			YMAJOR,
35			YDECR,
36			XDECR\|YDECR,
37			XDECR,
38			0
39			};
40
41	gwlarson	3.3	typedef struct {
42			FILE fp; / file pointer */
43			char fmt[32]; /* picture format */
44			double pa; /* pixel aspect ratio */
45			RESOLU rs; /* picture resolution */
46			} PICTURE;
47	gwlarson	3.1
48	gwlarson	3.3	extern PICTURE *openpicture();
49	gwlarson	3.1
50	gwlarson	3.3	#define closepicture(p) (fclose((p)->fp),free((char *)(p)))
51
52
53	gwlarson	3.1	main(argc, argv)
54			int argc;
55			char *argv[];
56			{
57	gwlarson	3.3	PICTURE *pin = NULL;
58	gwlarson	3.1	TIFF *tin = NULL;
59	gwlarson	3.2	int i, rval;
60	gwlarson	3.1
61			for (i = 1; i < argc && argv[i][0] == '-'; i++)
62			switch (argv[i][1]) {
63			case 'h': /* human observer settings */
64			flags = TM_F_HUMAN;
65			break;
66			case 's': /* toggle human contrast */
67			flags ^= TM_F_HCONTR;
68			break;
69			case 'c': /* toggle mesopic sens. */
70			flags ^= TM_F_MESOPIC;
71			break;
72			case 'l': /* toggle linear mapping */
73			flags ^= TM_F_LINEAR;
74			break;
75			case 'b': /* toggle greyscale output */
76			flags ^= TM_F_BW;
77			break;
78			case 'g': /* set display gamma */
79			if (argc-i < 2) goto userr;
80			gamv = atof(argv[++i]);
81			break;
82			case 'u': /* set display maximum */
83			if (argc-i < 2) goto userr;
84			ldmax = atof(argv[++i]);
85			break;
86			case 'd': /* set display dynamic range */
87			if (argc-i < 2) goto userr;
88			lddyn = atof(argv[++i]);
89			break;
90			case 'p': /* set display primaries */
91			if (argc-i < 9) goto userr;
92			myprims[RED][CIEX] = atof(argv[++i]);
93			myprims[RED][CIEY] = atof(argv[++i]);
94			myprims[GRN][CIEX] = atof(argv[++i]);
95			myprims[GRN][CIEY] = atof(argv[++i]);
96			myprims[BLU][CIEX] = atof(argv[++i]);
97			myprims[BLU][CIEY] = atof(argv[++i]);
98			myprims[WHT][CIEX] = atof(argv[++i]);
99			myprims[WHT][CIEY] = atof(argv[++i]);
100			rgbp = myprims;
101			break;
102			default:
103			goto userr;
104			}
105			if (argc-i < 2) goto userr;
106	gwlarson	3.3	if ((pin = openpicture(argv[i])) == NULL &&
107	gwlarson	3.1	(tin = TIFFOpen(argv[i], "r")) == NULL) {
108			fprintf(stderr, "%s: cannot open or interpret file \"%s\"\n",
109			argv[0], argv[i]);
110			exit(1);
111			}
112			if ((tifout = TIFFOpen(argv[i+1], "w")) == NULL) {
113			fprintf(stderr, "%s: cannot open output TIFF \"%s\"\n",
114			argv[0], argv[i+1]);
115			exit(1);
116			}
117	gwlarson	3.3	if (pin != NULL) {
118			rval = tmap_picture(argv[i], pin);
119			closepicture(pin);
120	gwlarson	3.1	} else {
121	gwlarson	3.2	rval = tmap_tiff(argv[i], tin);
122	gwlarson	3.1	TIFFClose(tin);
123			}
124			TIFFClose(tifout);
125	gwlarson	3.2	exit(rval==0 ? 0 : 1);
126	gwlarson	3.1	userr:
127			fprintf(stderr,
128			"Usage: %s [-h][-s][-c][-l][-b][-g gv][-d ld][-u lm][-p xr yr xg yg xb yb xw yw] input.{tif\|pic} output.tif\n",
129			argv[0]);
130			exit(1);
131			}
132
133
134	gwlarson	3.3	int
135			headline(s, pp) /* process line from header */
136			char *s;
137			register PICTURE *pp;
138			{
139			register char *cp;
140
141			for (cp = s; *cp; cp++)
142			if (*cp & 0x80)
143			return(-1); /* non-ascii in header */
144			if (isaspect(s))
145			pp->pa *= aspectval(s);
146			else
147			formatval(pp->fmt, s);
148			return(0);
149			}
150
151
152			PICTURE *
153	gwlarson	3.1	openpicture(fname) /* open/check Radiance picture file */
154			char *fname;
155			{
156			FILE *fp;
157	gwlarson	3.3	register PICTURE *pp;
158	gwlarson	3.1	register char *cp;
159			/* check filename suffix */
160			if (fname == NULL) return(NULL);
161			for (cp = fname; *cp; cp++)
162			;
163			while (cp > fname && cp[-1] != '.')
164			if (*--cp == '/') {
165			cp = fname;
166			break;
167			}
168			if (cp > fname && !strncmp(cp, "tif", 3))
169			return(NULL); /* assume it's a TIFF */
170			/* else try opening it */
171			if ((fp = fopen(fname, "r")) == NULL)
172			return(NULL);
173	gwlarson	3.3	/* allocate struct */
174			if ((pp = (PICTURE *)malloc(sizeof(PICTURE))) == NULL)
175			return(NULL); /* serious error -- should exit? */
176			pp->fp = fp; pp->fmt[0] = '\0'; pp->pa = 1.;
177			/* load header */
178			if (getheader(fp, headline, pp) < 0) {
179			closepicture(pp);
180	gwlarson	3.1	return(NULL);
181			}
182	gwlarson	3.3	if (!pp->fmt[0]) /* assume RGBE if unspecified */
183			strcpy(pp->fmt, COLRFMT);
184			if (!globmatch(PICFMT, pp->fmt) \|\| !fgetsresolu(&pp->rs, fp)) {
185			closepicture(pp); /* failed test -- close file */
186			return(NULL);
187			}
188	gwlarson	3.1	rewind(fp); /* passed test -- rewind file */
189	gwlarson	3.3	return(pp);
190	gwlarson	3.1	}
191
192
193	gwlarson	3.2	int
194	gwlarson	3.3	tmap_picture(fname, pp) /* tone map Radiance picture */
195	gwlarson	3.1	char *fname;
196	gwlarson	3.3	register PICTURE *pp;
197	gwlarson	3.1	{
198			uint16 orient;
199			int xsiz, ysiz;
200			BYTE *pix;
201			/* read and tone map picture */
202			if (tmMapPicture(&pix, &xsiz, &ysiz, flags,
203	gwlarson	3.3	rgbp, gamv, lddyn, ldmax, fname, pp->fp) != TM_E_OK)
204	gwlarson	3.2	return(-1);
205	gwlarson	3.3	/* figure out TIFF orientation */
206			for (orient = 8; --orient; )
207			if (ortab[orient] == pp->rs.or)
208			break;
209	gwlarson	3.1	orient++;
210			/* put out our image */
211	gwlarson	3.2	if (putimage(orient, (uint32)xsiz, (uint32)ysiz,
212	gwlarson	3.3	72., 72./pp->pa, 2, pix) != 0)
213	gwlarson	3.2	return(-1);
214	gwlarson	3.1	/* free data and we're done */
215			free((char *)pix);
216	gwlarson	3.2	return(0);
217	gwlarson	3.1	}
218
219
220			tmap_tiff(fname, tp) /* tone map SGILOG TIFF */
221			char *fname;
222			TIFF *tp;
223			{
224			float xres, yres;
225			uint16 orient, resunit, phot;
226			int xsiz, ysiz;
227			BYTE *pix;
228			/* check to make sure it's SGILOG */
229			TIFFGetFieldDefaulted(tp, TIFFTAG_PHOTOMETRIC, &phot);
230			if (phot != PHOTOMETRIC_LOGLUV && phot != PHOTOMETRIC_LOGL) {
231	gwlarson	3.2	if (!(flags & TM_F_NOSTDERR)) {
232			fputs(fname, stderr);
233			fputs(": TIFF must be in SGILOG format\n", stderr);
234			}
235			return(-1);
236	gwlarson	3.1	}
237			if (phot == PHOTOMETRIC_LOGL)
238			flags \|= TM_F_BW;
239			/* read and tone map TIFF */
240			if (tmMapTIFF(&pix, &xsiz, &ysiz, flags,
241			rgbp, gamv, lddyn, ldmax, fname, tp) != TM_E_OK)
242	gwlarson	3.2	return(-1);
243	gwlarson	3.1	/* get relevant tags */
244			TIFFGetFieldDefaulted(tp, TIFFTAG_RESOLUTIONUNIT, &resunit);
245			TIFFGetFieldDefaulted(tp, TIFFTAG_XRESOLUTION, &xres);
246			TIFFGetFieldDefaulted(tp, TIFFTAG_YRESOLUTION, &yres);
247			TIFFGetFieldDefaulted(tp, TIFFTAG_ORIENTATION, &orient);
248			/* put out our image */
249	gwlarson	3.2	if (putimage(orient, (uint32)xsiz, (uint32)ysiz,
250			xres, yres, resunit, pix) != 0)
251			return(-1);
252	gwlarson	3.1	/* free data and we're done */
253			free((char *)pix);
254	gwlarson	3.2	return(0);
255	gwlarson	3.1	}
256
257
258			putimage(or, xs, ys, xr, yr, ru, pd) /* write out our image */
259			uint16 or;
260			uint32 xs, ys;
261			float xr, yr;
262			uint16 ru;
263			BYTE *pd;
264			{
265			register int y;
266			uint32 rowsperstrip;
267
268			TIFFSetField(tifout, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
269			if (flags & TM_F_BW) {
270			TIFFSetField(tifout, TIFFTAG_PHOTOMETRIC,
271			PHOTOMETRIC_MINISBLACK);
272			TIFFSetField(tifout, TIFFTAG_SAMPLESPERPIXEL, 1);
273			} else {
274			TIFFSetField(tifout, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
275			TIFFSetField(tifout, TIFFTAG_SAMPLESPERPIXEL, 3);
276			}
277			if (rgbp != stdprims) {
278			TIFFSetField(tifout, TIFFTAG_PRIMARYCHROMATICITIES,
279			(float *)rgbp);
280			TIFFSetField(tifout, TIFFTAG_WHITEPOINT, (float *)rgbp[WHT]);
281			}
282			TIFFSetField(tifout, TIFFTAG_BITSPERSAMPLE, 8);
283			TIFFSetField(tifout, TIFFTAG_IMAGEWIDTH, xs);
284			TIFFSetField(tifout, TIFFTAG_IMAGELENGTH, ys);
285			TIFFSetField(tifout, TIFFTAG_RESOLUTIONUNIT, ru);
286			TIFFSetField(tifout, TIFFTAG_XRESOLUTION, xr);
287			TIFFSetField(tifout, TIFFTAG_YRESOLUTION, yr);
288			TIFFSetField(tifout, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
289			TIFFSetField(tifout, TIFFTAG_ORIENTATION, or);
290			/* compute good strip size */
291			rowsperstrip = 8192/TIFFScanlineSize(tifout);
292			if (rowsperstrip < 1) rowsperstrip = 1;
293			TIFFSetField(tifout, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
294			/* write out scanlines */
295			if (flags & TM_F_BW) {
296			for (y = 0; y < ys; y++)
297			if (TIFFWriteScanline(tifout, pd + y*xs, y, 0) < 0)
298			goto writerr;
299			} else {
300			for (y = 0; y < ys; y++)
301			if (TIFFWriteScanline(tifout, pd + y3xs, y, 0) < 0)
302			goto writerr;
303			}
304	gwlarson	3.2	return(0); /* all done! */
305	gwlarson	3.1	writerr:
306			fputs("Error writing TIFF output\n", stderr);
307	gwlarson	3.2	return(-1);
308	gwlarson	3.1	}