src/px/ra_tiff.c

/* Copyright (c) 1991 Regents of the University of California */

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

/*
 *  program to convert between RADIANCE and 24-bit TIFF files.
 */

#include  <stdio.h>

#include  "tiffio.h"

#include  "color.h"

extern double  atof();

extern char  *malloc(), *realloc();

int  lzcomp = 0;                        /* use Lempel-Ziv compression? */

int  greyscale = 0;                     /* produce greyscale image? */

double  gamma = 2.2;                    /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;


main(argc, argv)
int  argc;
char  *argv[];
{
        int  reverse = 0;
        int  i;
        
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'g':
                                gamma = atof(argv[++i]);
                                break;
                        case 'z':
                                lzcomp = !lzcomp;
                                break;
                        case 'b':
                                greyscale = !greyscale;
                                break;
                        case 'e':
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'r':
                                reverse = !reverse;
                                break;
                        case '\0':
                                goto doneopts;
                        default:
                                goto userr;
                        }
                else
                        break;
doneopts:
        setcolrgam(gamma);

        if (reverse)
                if (i != argc-2 && i != argc-1)
                        goto userr;
                else
                        tiff2ra(argv[i], argv[i+1]);
        else
                if (i != argc-2)
                        goto userr;
                else
                        ra2tiff(argv[i], argv[i+1]);

        exit(0);
userr:
        fprintf(stderr,
        "Usage: %s [-r][-b][-z][-e +/-stops][-g gamma] input output\n",
                        progname);
        exit(1);
}


quiterr(err)            /* print message and exit */
char  *err;
{
        if (err != NULL) {
                fprintf(stderr, "%s: %s\n", progname, err);
                exit(1);
        }
        exit(0);
}


tiff2ra(inpf, outf)     /* convert TIFF file to Radiance picture */
char    *inpf, *outf;
{
        unsigned long   xmax, ymax;
        TIFF    *tif;
        unsigned short  pconfig, nsamps;
        unsigned short  hi;
        register BYTE   *scanin;
        register COLR   *scanout;
        register int    x;
        int     y;
                                        /* open/check  TIFF file */
        if ((tif = TIFFOpen(inpf, "r")) == NULL)
                quiterr("cannot open TIFF input");
        if (!TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &nsamps) ||
                        (nsamps != 1 && nsamps != 3))
                quiterr("unsupported samples per pixel");
        if (!TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &hi) || hi != 8)
                quiterr("unsupported bits per sample");
        if (TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &hi) &&
                        hi != (nsamps==1 ? 1 : 2))
                quiterr("unsupported photometric interpretation");
        if (!TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &pconfig) ||
                        (pconfig != 1 && pconfig != 2))
                quiterr("unsupported planar configuration");
        if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &xmax) ||
                        !TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &ymax))
                quiterr("unknown input image resolution");
                                                /* allocate scanlines */
        scanin = (BYTE *)malloc(TIFFScanlineSize(tif));
        scanout = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanin == NULL || scanout == NULL)
                quiterr("out of memory in tiff2ra");
                                        /* open output and write header */
        if (outf != NULL && strcmp(outf, "-") &&
                        freopen(outf, "w", stdout) == NULL)
                quiterr("cannot open Radiance output file");
        fputs(progname, stdout);
        if (bradj)
                printf(" -e %+d", bradj);
        fputs(" -r\n", stdout);
        fputformat(COLRFMT, stdout);
        putchar('\n');
        fputresolu(YDECR|YMAJOR, xmax, ymax, stdout);
                                                /* convert image */
        if (nsamps == 1)
                pconfig = 1;
        for (y = 0; y < ymax; y++) {
                if (pconfig == 1) {
                        if (TIFFReadScanline(tif, scanin, y, 0) < 0)
                                goto readerr;
                        if (nsamps == 1)
                                for (x = 0; x < xmax; x++)
                                        scanout[x][RED] =
                                        scanout[x][GRN] =
                                        scanout[x][BLU] = scanin[x];
                        else
                                for (x = 0; x < xmax; x++) {
                                        scanout[x][RED] = scanin[3*x];
                                        scanout[x][GRN] = scanin[3*x+1];
                                        scanout[x][BLU] = scanin[3*x+2];
                                }
                } else {
                        if (TIFFReadScanline(tif, scanin, y, 0) < 0)
                                goto readerr;
                        for (x = 0; x < xmax; x++)
                                scanout[x][RED] = scanin[x];
                        if (TIFFReadScanline(tif, scanin, y, 1) < 0)
                                goto readerr;
                        for (x = 0; x < xmax; x++)
                                scanout[x][GRN] = scanin[x];
                        if (TIFFReadScanline(tif, scanin, y, 2) < 0)
                                goto readerr;
                        for (x = 0; x < xmax; x++)
                                scanout[x][BLU] = scanin[x];
                }
                gambs_colrs(scanout, xmax);
                if (bradj)
                        shiftcolrs(scanout, xmax, bradj);
                if (fwritecolrs(scanout, xmax, stdout) < 0)
                        quiterr("error writing Radiance picture");
        }
                                                /* clean up */
        free((char *)scanin);
        free((char *)scanout);
        TIFFClose(tif);
        return;
readerr:
        quiterr("error reading TIFF input");
}


ra2tiff(inpf, outf)             /* convert Radiance file to 24-bit TIFF */
char    *inpf, *outf;
{
        TIFF    *tif;
        int     xmax, ymax;
        BYTE    *scanout;
        COLR    *scanin;
        register int    x;
        int     y;
                                                /* open Radiance file */
        if (strcmp(inpf, "-") && freopen(inpf, "r", stdin) == NULL)
                quiterr("cannot open Radiance input file");
        if (checkheader(stdin, COLRFMT, NULL) < 0 ||
                        fgetresolu(&xmax, &ymax, stdin) != (YDECR|YMAJOR))
                quiterr("bad Radiance picture");
                                                /* open TIFF file */
        if ((tif = TIFFOpen(outf, "w")) == NULL)
                quiterr("cannot open TIFF output");
        TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (unsigned long)xmax);
        TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (unsigned long)ymax);
        TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, greyscale ? 1 : 3);
        TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
        TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, greyscale ? 1 : 2);
        TIFFSetField(tif, TIFFTAG_PLANARCONFIG, 1);
        if (lzcomp)
                TIFFSetField(tif, TIFFTAG_COMPRESSION, (unsigned short)5);
                                                /* allocate scanlines */
        scanin = (COLR *)malloc(xmax*sizeof(COLR));
        scanout = (BYTE *)malloc(TIFFScanlineSize(tif));
        if (scanin == NULL || scanout == NULL)
                quiterr("out of memory in ra2tiff");
                                                /* convert image */
        for (y = 0; y < ymax; y++) {
                if (freadcolrs(scanin, xmax, stdin) < 0)
                        quiterr("error reading Radiance picture");
                if (bradj)
                        shiftcolrs(scanin, xmax, bradj);
                if (greyscale) {
                        for (x = 0; x < xmax; x++)
                                scanin[x][GRN] = normbright(scanin[x]);
                        colrs_gambs(scanin, xmax);
                        for (x = 0; x < xmax; x++)
                                scanout[x] = scanin[x][GRN];
                } else {
                        colrs_gambs(scanin, xmax);
                        for (x = 0; x < xmax; x++) {
                                scanout[3*x] = scanin[x][RED];
                                scanout[3*x+1] = scanin[x][GRN];
                                scanout[3*x+2] = scanin[x][BLU];
                        }
                }
                if (TIFFWriteScanline(tif, scanout, y, 0) < 0)
                        quiterr("error writing TIFF output");
        }
                                                /* clean up */
        free((char *)scanin);
        free((char *)scanout);
        TIFFClose(tif);
}
Revision:	1.5
Committed:	Thu Aug 15 15:47:35 1991 UTC (32 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+39 -16 lines
Log Message:	added -b option for greyscale images
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1991 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* program to convert between RADIANCE and 24-bit TIFF files.
9			*/
10
11			#include <stdio.h>
12
13			#include "tiffio.h"
14
15			#include "color.h"
16
17			extern double atof();
18
19			extern char malloc(), realloc();
20
21	greg	1.4	int lzcomp = 0; /* use Lempel-Ziv compression? */
22
23	greg	1.5	int greyscale = 0; /* produce greyscale image? */
24
25	greg	1.1	double gamma = 2.2; /* gamma correction */
26
27			int bradj = 0; /* brightness adjustment */
28
29			char *progname;
30
31
32			main(argc, argv)
33			int argc;
34			char *argv[];
35			{
36			int reverse = 0;
37			int i;
38
39			progname = argv[0];
40
41			for (i = 1; i < argc; i++)
42			if (argv[i][0] == '-')
43			switch (argv[i][1]) {
44			case 'g':
45			gamma = atof(argv[++i]);
46			break;
47	greg	1.4	case 'z':
48			lzcomp = !lzcomp;
49			break;
50	greg	1.5	case 'b':
51			greyscale = !greyscale;
52			break;
53	greg	1.1	case 'e':
54			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
55			goto userr;
56			bradj = atoi(argv[++i]);
57			break;
58			case 'r':
59			reverse = !reverse;
60			break;
61			case '\0':
62			goto doneopts;
63			default:
64			goto userr;
65			}
66			else
67			break;
68			doneopts:
69			setcolrgam(gamma);
70
71			if (reverse)
72			if (i != argc-2 && i != argc-1)
73			goto userr;
74			else
75			tiff2ra(argv[i], argv[i+1]);
76			else
77			if (i != argc-2)
78			goto userr;
79			else
80			ra2tiff(argv[i], argv[i+1]);
81
82			exit(0);
83			userr:
84	greg	1.4	fprintf(stderr,
85	greg	1.5	"Usage: %s [-r][-b][-z][-e +/-stops][-g gamma] input output\n",
86	greg	1.1	progname);
87			exit(1);
88			}
89
90
91			quiterr(err) /* print message and exit */
92			char *err;
93			{
94			if (err != NULL) {
95			fprintf(stderr, "%s: %s\n", progname, err);
96			exit(1);
97			}
98			exit(0);
99			}
100
101
102			tiff2ra(inpf, outf) /* convert TIFF file to Radiance picture */
103			char inpf, outf;
104			{
105			unsigned long xmax, ymax;
106			TIFF *tif;
107	greg	1.5	unsigned short pconfig, nsamps;
108	greg	1.1	unsigned short hi;
109			register BYTE *scanin;
110			register COLR *scanout;
111			register int x;
112			int y;
113			/* open/check TIFF file */
114			if ((tif = TIFFOpen(inpf, "r")) == NULL)
115			quiterr("cannot open TIFF input");
116	greg	1.5	if (!TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &nsamps) \|\|
117			(nsamps != 1 && nsamps != 3))
118	greg	1.1	quiterr("unsupported samples per pixel");
119			if (!TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &hi) \|\| hi != 8)
120			quiterr("unsupported bits per sample");
121	greg	1.5	if (TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &hi) &&
122			hi != (nsamps==1 ? 1 : 2))
123	greg	1.1	quiterr("unsupported photometric interpretation");
124			if (!TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &pconfig) \|\|
125			(pconfig != 1 && pconfig != 2))
126			quiterr("unsupported planar configuration");
127			if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &xmax) \|\|
128			!TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &ymax))
129			quiterr("unknown input image resolution");
130			/* allocate scanlines */
131			scanin = (BYTE *)malloc(TIFFScanlineSize(tif));
132			scanout = (COLR )malloc(xmaxsizeof(COLR));
133			if (scanin == NULL \|\| scanout == NULL)
134			quiterr("out of memory in tiff2ra");
135			/* open output and write header */
136			if (outf != NULL && strcmp(outf, "-") &&
137			freopen(outf, "w", stdout) == NULL)
138			quiterr("cannot open Radiance output file");
139			fputs(progname, stdout);
140			if (bradj)
141			printf(" -e %+d", bradj);
142			fputs(" -r\n", stdout);
143			fputformat(COLRFMT, stdout);
144			putchar('\n');
145			fputresolu(YDECR\|YMAJOR, xmax, ymax, stdout);
146			/* convert image */
147	greg	1.5	if (nsamps == 1)
148			pconfig = 1;
149	greg	1.1	for (y = 0; y < ymax; y++) {
150			if (pconfig == 1) {
151			if (TIFFReadScanline(tif, scanin, y, 0) < 0)
152			goto readerr;
153	greg	1.5	if (nsamps == 1)
154			for (x = 0; x < xmax; x++)
155			scanout[x][RED] =
156			scanout[x][GRN] =
157			scanout[x][BLU] = scanin[x];
158			else
159			for (x = 0; x < xmax; x++) {
160			scanout[x][RED] = scanin[3*x];
161			scanout[x][GRN] = scanin[3*x+1];
162			scanout[x][BLU] = scanin[3*x+2];
163			}
164	greg	1.1	} else {
165			if (TIFFReadScanline(tif, scanin, y, 0) < 0)
166			goto readerr;
167			for (x = 0; x < xmax; x++)
168			scanout[x][RED] = scanin[x];
169			if (TIFFReadScanline(tif, scanin, y, 1) < 0)
170			goto readerr;
171			for (x = 0; x < xmax; x++)
172			scanout[x][GRN] = scanin[x];
173			if (TIFFReadScanline(tif, scanin, y, 2) < 0)
174			goto readerr;
175			for (x = 0; x < xmax; x++)
176			scanout[x][BLU] = scanin[x];
177			}
178			gambs_colrs(scanout, xmax);
179			if (bradj)
180			shiftcolrs(scanout, xmax, bradj);
181			if (fwritecolrs(scanout, xmax, stdout) < 0)
182			quiterr("error writing Radiance picture");
183			}
184			/* clean up */
185			free((char *)scanin);
186			free((char *)scanout);
187			TIFFClose(tif);
188			return;
189			readerr:
190			quiterr("error reading TIFF input");
191			}
192
193
194			ra2tiff(inpf, outf) /* convert Radiance file to 24-bit TIFF */
195			char inpf, outf;
196			{
197			TIFF *tif;
198			int xmax, ymax;
199			BYTE *scanout;
200			COLR *scanin;
201			register int x;
202			int y;
203			/* open Radiance file */
204			if (strcmp(inpf, "-") && freopen(inpf, "r", stdin) == NULL)
205			quiterr("cannot open Radiance input file");
206	greg	1.2	if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
207			fgetresolu(&xmax, &ymax, stdin) != (YDECR\|YMAJOR))
208	greg	1.1	quiterr("bad Radiance picture");
209			/* open TIFF file */
210			if ((tif = TIFFOpen(outf, "w")) == NULL)
211			quiterr("cannot open TIFF output");
212			TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (unsigned long)xmax);
213			TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (unsigned long)ymax);
214	greg	1.5	TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, greyscale ? 1 : 3);
215	greg	1.1	TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
216	greg	1.5	TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, greyscale ? 1 : 2);
217	greg	1.1	TIFFSetField(tif, TIFFTAG_PLANARCONFIG, 1);
218	greg	1.4	if (lzcomp)
219			TIFFSetField(tif, TIFFTAG_COMPRESSION, (unsigned short)5);
220	greg	1.1	/* allocate scanlines */
221			scanin = (COLR )malloc(xmaxsizeof(COLR));
222			scanout = (BYTE *)malloc(TIFFScanlineSize(tif));
223			if (scanin == NULL \|\| scanout == NULL)
224			quiterr("out of memory in ra2tiff");
225			/* convert image */
226			for (y = 0; y < ymax; y++) {
227			if (freadcolrs(scanin, xmax, stdin) < 0)
228			quiterr("error reading Radiance picture");
229			if (bradj)
230			shiftcolrs(scanin, xmax, bradj);
231	greg	1.5	if (greyscale) {
232			for (x = 0; x < xmax; x++)
233			scanin[x][GRN] = normbright(scanin[x]);
234			colrs_gambs(scanin, xmax);
235			for (x = 0; x < xmax; x++)
236			scanout[x] = scanin[x][GRN];
237			} else {
238			colrs_gambs(scanin, xmax);
239			for (x = 0; x < xmax; x++) {
240			scanout[3*x] = scanin[x][RED];
241			scanout[3*x+1] = scanin[x][GRN];
242			scanout[3*x+2] = scanin[x][BLU];
243			}
244	greg	1.1	}
245			if (TIFFWriteScanline(tif, scanout, y, 0) < 0)
246			quiterr("error writing TIFF output");
247			}
248			/* clean up */
249			free((char *)scanin);
250			free((char *)scanout);
251			TIFFClose(tif);
252			}