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"

#include  "resolu.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');
        fprtresolu(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) < 0)
                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:	1.6
Committed:	Mon Nov 11 14:01:23 1991 UTC (32 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+4 -2 lines
Log Message:	Improved handling of scanline ordering
#	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	greg	1.6	#include "resolu.h"
18
19	greg	1.1	extern double atof();
20
21			extern char malloc(), realloc();
22
23	greg	1.4	int lzcomp = 0; /* use Lempel-Ziv compression? */
24
25	greg	1.5	int greyscale = 0; /* produce greyscale image? */
26
27	greg	1.1	double gamma = 2.2; /* gamma correction */
28
29			int bradj = 0; /* brightness adjustment */
30
31			char *progname;
32
33
34			main(argc, argv)
35			int argc;
36			char *argv[];
37			{
38			int reverse = 0;
39			int i;
40
41			progname = argv[0];
42
43			for (i = 1; i < argc; i++)
44			if (argv[i][0] == '-')
45			switch (argv[i][1]) {
46			case 'g':
47			gamma = atof(argv[++i]);
48			break;
49	greg	1.4	case 'z':
50			lzcomp = !lzcomp;
51			break;
52	greg	1.5	case 'b':
53			greyscale = !greyscale;
54			break;
55	greg	1.1	case 'e':
56			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
57			goto userr;
58			bradj = atoi(argv[++i]);
59			break;
60			case 'r':
61			reverse = !reverse;
62			break;
63			case '\0':
64			goto doneopts;
65			default:
66			goto userr;
67			}
68			else
69			break;
70			doneopts:
71			setcolrgam(gamma);
72
73			if (reverse)
74			if (i != argc-2 && i != argc-1)
75			goto userr;
76			else
77			tiff2ra(argv[i], argv[i+1]);
78			else
79			if (i != argc-2)
80			goto userr;
81			else
82			ra2tiff(argv[i], argv[i+1]);
83
84			exit(0);
85			userr:
86	greg	1.4	fprintf(stderr,
87	greg	1.5	"Usage: %s [-r][-b][-z][-e +/-stops][-g gamma] input output\n",
88	greg	1.1	progname);
89			exit(1);
90			}
91
92
93			quiterr(err) /* print message and exit */
94			char *err;
95			{
96			if (err != NULL) {
97			fprintf(stderr, "%s: %s\n", progname, err);
98			exit(1);
99			}
100			exit(0);
101			}
102
103
104			tiff2ra(inpf, outf) /* convert TIFF file to Radiance picture */
105			char inpf, outf;
106			{
107			unsigned long xmax, ymax;
108			TIFF *tif;
109	greg	1.5	unsigned short pconfig, nsamps;
110	greg	1.1	unsigned short hi;
111			register BYTE *scanin;
112			register COLR *scanout;
113			register int x;
114			int y;
115			/* open/check TIFF file */
116			if ((tif = TIFFOpen(inpf, "r")) == NULL)
117			quiterr("cannot open TIFF input");
118	greg	1.5	if (!TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &nsamps) \|\|
119			(nsamps != 1 && nsamps != 3))
120	greg	1.1	quiterr("unsupported samples per pixel");
121			if (!TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &hi) \|\| hi != 8)
122			quiterr("unsupported bits per sample");
123	greg	1.5	if (TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &hi) &&
124			hi != (nsamps==1 ? 1 : 2))
125	greg	1.1	quiterr("unsupported photometric interpretation");
126			if (!TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &pconfig) \|\|
127			(pconfig != 1 && pconfig != 2))
128			quiterr("unsupported planar configuration");
129			if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &xmax) \|\|
130			!TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &ymax))
131			quiterr("unknown input image resolution");
132			/* allocate scanlines */
133			scanin = (BYTE *)malloc(TIFFScanlineSize(tif));
134			scanout = (COLR )malloc(xmaxsizeof(COLR));
135			if (scanin == NULL \|\| scanout == NULL)
136			quiterr("out of memory in tiff2ra");
137			/* open output and write header */
138			if (outf != NULL && strcmp(outf, "-") &&
139			freopen(outf, "w", stdout) == NULL)
140			quiterr("cannot open Radiance output file");
141			fputs(progname, stdout);
142			if (bradj)
143			printf(" -e %+d", bradj);
144			fputs(" -r\n", stdout);
145			fputformat(COLRFMT, stdout);
146			putchar('\n');
147	greg	1.6	fprtresolu(xmax, ymax, stdout);
148	greg	1.1	/* convert image */
149	greg	1.5	if (nsamps == 1)
150			pconfig = 1;
151	greg	1.1	for (y = 0; y < ymax; y++) {
152			if (pconfig == 1) {
153			if (TIFFReadScanline(tif, scanin, y, 0) < 0)
154			goto readerr;
155	greg	1.5	if (nsamps == 1)
156			for (x = 0; x < xmax; x++)
157			scanout[x][RED] =
158			scanout[x][GRN] =
159			scanout[x][BLU] = scanin[x];
160			else
161			for (x = 0; x < xmax; x++) {
162			scanout[x][RED] = scanin[3*x];
163			scanout[x][GRN] = scanin[3*x+1];
164			scanout[x][BLU] = scanin[3*x+2];
165			}
166	greg	1.1	} else {
167			if (TIFFReadScanline(tif, scanin, y, 0) < 0)
168			goto readerr;
169			for (x = 0; x < xmax; x++)
170			scanout[x][RED] = scanin[x];
171			if (TIFFReadScanline(tif, scanin, y, 1) < 0)
172			goto readerr;
173			for (x = 0; x < xmax; x++)
174			scanout[x][GRN] = scanin[x];
175			if (TIFFReadScanline(tif, scanin, y, 2) < 0)
176			goto readerr;
177			for (x = 0; x < xmax; x++)
178			scanout[x][BLU] = scanin[x];
179			}
180			gambs_colrs(scanout, xmax);
181			if (bradj)
182			shiftcolrs(scanout, xmax, bradj);
183			if (fwritecolrs(scanout, xmax, stdout) < 0)
184			quiterr("error writing Radiance picture");
185			}
186			/* clean up */
187			free((char *)scanin);
188			free((char *)scanout);
189			TIFFClose(tif);
190			return;
191			readerr:
192			quiterr("error reading TIFF input");
193			}
194
195
196			ra2tiff(inpf, outf) /* convert Radiance file to 24-bit TIFF */
197			char inpf, outf;
198			{
199			TIFF *tif;
200			int xmax, ymax;
201			BYTE *scanout;
202			COLR *scanin;
203			register int x;
204			int y;
205			/* open Radiance file */
206			if (strcmp(inpf, "-") && freopen(inpf, "r", stdin) == NULL)
207			quiterr("cannot open Radiance input file");
208	greg	1.2	if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
209	greg	1.6	fgetresolu(&xmax, &ymax, stdin) < 0)
210	greg	1.1	quiterr("bad Radiance picture");
211			/* open TIFF file */
212			if ((tif = TIFFOpen(outf, "w")) == NULL)
213			quiterr("cannot open TIFF output");
214			TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (unsigned long)xmax);
215			TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (unsigned long)ymax);
216	greg	1.5	TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, greyscale ? 1 : 3);
217	greg	1.1	TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
218	greg	1.5	TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, greyscale ? 1 : 2);
219	greg	1.1	TIFFSetField(tif, TIFFTAG_PLANARCONFIG, 1);
220	greg	1.4	if (lzcomp)
221			TIFFSetField(tif, TIFFTAG_COMPRESSION, (unsigned short)5);
222	greg	1.1	/* allocate scanlines */
223			scanin = (COLR )malloc(xmaxsizeof(COLR));
224			scanout = (BYTE *)malloc(TIFFScanlineSize(tif));
225			if (scanin == NULL \|\| scanout == NULL)
226			quiterr("out of memory in ra2tiff");
227			/* convert image */
228			for (y = 0; y < ymax; y++) {
229			if (freadcolrs(scanin, xmax, stdin) < 0)
230			quiterr("error reading Radiance picture");
231			if (bradj)
232			shiftcolrs(scanin, xmax, bradj);
233	greg	1.5	if (greyscale) {
234			for (x = 0; x < xmax; x++)
235			scanin[x][GRN] = normbright(scanin[x]);
236			colrs_gambs(scanin, xmax);
237			for (x = 0; x < xmax; x++)
238			scanout[x] = scanin[x][GRN];
239			} else {
240			colrs_gambs(scanin, xmax);
241			for (x = 0; x < xmax; x++) {
242			scanout[3*x] = scanin[x][RED];
243			scanout[3*x+1] = scanin[x][GRN];
244			scanout[3*x+2] = scanin[x][BLU];
245			}
246	greg	1.1	}
247			if (TIFFWriteScanline(tif, scanout, y, 0) < 0)
248			quiterr("error writing TIFF output");
249			}
250			/* clean up */
251			free((char *)scanin);
252			free((char *)scanout);
253			TIFFClose(tif);
254			}