src/px/ra_bn.c

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

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

/*
 *  ra_bn.c - program to convert between RADIANCE and barneyscan picture format.
 *
 *      10/12/88
 */

#include  <stdio.h>

#include  "color.h"

extern double  atof(), pow();

double  gamma = 2.0;                    /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;

char  errmsg[128];

FILE    *rafp, *bnfp[3];

int  xmax, ymax;


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 'r':
                                reverse = !reverse;
                                break;
                        case 'e':
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        default:
                                goto userr;
                        }
                else
                        break;
                                                /* set gamma correction */
        setcolrgam(gamma);

        if (reverse) {
                if (i > argc-1 || i < argc-2)
                        goto userr;
                if (openbarney(argv[i], "r") < 0) {
                        sprintf(errmsg, "cannot open input \"%s\"", argv[i]);
                        quiterr(errmsg);
                }
                if (i == argc-1 || !strcmp(argv[i+1], "-"))
                        rafp = stdout;
                else if ((rafp = fopen(argv[i+1], "w")) == NULL) {
                        sprintf(errmsg, "cannot open output \"%s\"",
                                        argv[i+1]);
                        quiterr(errmsg);
                }
                                        /* put header */
                printargs(i, argv, rafp);
                fputformat(COLRFMT, rafp);
                putc('\n', rafp);
                fputresolu(YMAJOR|YDECR, xmax, ymax, rafp);
                                        /* convert file */
                bn2ra();
        } else {
                if (i != argc-2)
                        goto userr;
                if (!strcmp(argv[i], "-"))
                        rafp = stdin;
                else if ((rafp = fopen(argv[i], "r")) == NULL) {
                        sprintf(errmsg, "cannot open input \"%s\"",
                                        argv[i]);
                        quiterr(errmsg);
                }
                                        /* get header */
                if (checkheader(rafp, COLRFMT, NULL) < 0 ||
                        fgetresolu(&xmax, &ymax, rafp) != (YMAJOR|YDECR))
                        quiterr("bad RADIANCE format");
                if (openbarney(argv[i+1], "w") < 0) {
                        sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]);
                        quiterr(errmsg);
                }
                                        /* convert file */
                ra2bn();
        }
        quiterr(NULL);
userr:
        fprintf(stderr, "Usage: %s [-g gamma][-e +/-stops] {input|-} output\n",
                        progname);
        fprintf(stderr, "   or: %s -r [-g gamma][-e +/-stops] 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);
}


openbarney(fname, mode)                 /* open barneyscan files */
char    *fname;
char    *mode;
{
        static char     suffix[3][4] = {"red", "grn", "blu"};
        int     i;
        char    file[128];

        for (i = 0; i < 3; i++) {
                sprintf(file, "%s.%s", fname, suffix[i]);
                if ((bnfp[i] = fopen(file, mode)) == NULL)
                        return(-1);
        }
        if (mode[0] == 'r') {           /* get header */
                xmax = getint(bnfp[0]);
                ymax = getint(bnfp[0]);
                for (i = 1; i < 3; i++)
                        if (getint(bnfp[i]) != xmax || getint(bnfp[i]) != ymax)
                                return(-1);
        } else {                        /* put header */
                for (i = 0; i < 3; i++) {
                        putint(xmax, bnfp[i]);
                        putint(ymax, bnfp[i]);
                }
        }
        return(0);
}


int
getint(fp)                              /* get short int from barneyscan file */
register FILE   *fp;
{
        register short  val;

        val = getc(fp);
        val |= getc(fp) << 8;

        return(val);
}


putint(val, fp)                         /* put short int to barneyscan file */
register int    val;
register FILE   *fp;
{
        putc(val&0xff, fp);
        putc((val >> 8)&0xff, fp);
}


ra2bn()                                 /* convert radiance to barneyscan */
{
        register int    i;
        register COLR   *inl;
        int     j;

        if ((inl = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
                quiterr("out of memory");
        for (j = 0; j < ymax; j++) {
                if (freadcolrs(inl, xmax, rafp) < 0)
                        quiterr("error reading RADIANCE file");
                if (bradj)
                        shiftcolrs(inl, xmax, bradj);
                colrs_gambs(inl, xmax);
                for (i = 0; i < xmax; i++) {
                        putc(inl[i][RED], bnfp[0]);
                        putc(inl[i][GRN], bnfp[1]);
                        putc(inl[i][BLU], bnfp[2]);
                }
                if (ferror(bnfp[0]) || ferror(bnfp[1]) || ferror(bnfp[2]))
                        quiterr("error writing Barney files");
        }
        free((char *)inl);
}


bn2ra()                                 /* convert barneyscan to radiance */
{
        register int    i;
        register COLR   *outline;
        int     j;

        if ((outline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
                quiterr("out of memory");
        for (j = 0; j < ymax; j++) {
                for (i = 0; i < xmax; i++) {
                        outline[i][RED] = getc(bnfp[0]);
                        outline[i][GRN] = getc(bnfp[1]);
                        outline[i][BLU] = getc(bnfp[2]);
                }
                if (feof(bnfp[0]) || feof(bnfp[1]) || feof(bnfp[2]))
                        quiterr("error reading barney file");
                gambs_colrs(outline, xmax);
                if (bradj)
                        shiftcolrs(outline, xmax, bradj);
                if (fwritecolrs(outline, xmax, rafp) < 0)
                        quiterr("error writing RADIANCE file");
        }
        free((char *)outline);
}
Revision:	1.8
Committed:	Wed Aug 7 08:36:29 1991 UTC (34 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+15 -3 lines
Log Message:	added -e +/-stops option
#	User	Rev	Content
1	greg	1.8	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* ra_bn.c - program to convert between RADIANCE and barneyscan picture format.
9			*
10			* 10/12/88
11			*/
12
13			#include <stdio.h>
14
15			#include "color.h"
16
17			extern double atof(), pow();
18
19			double gamma = 2.0; /* gamma correction */
20
21	greg	1.8	int bradj = 0; /* brightness adjustment */
22
23	greg	1.1	char *progname;
24
25			char errmsg[128];
26
27			FILE rafp, bnfp[3];
28
29			int xmax, ymax;
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			case 'r':
48			reverse = !reverse;
49			break;
50	greg	1.8	case 'e':
51			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
52			goto userr;
53			bradj = atoi(argv[++i]);
54			break;
55	greg	1.1	default:
56			goto userr;
57			}
58			else
59			break;
60	greg	1.6	/* set gamma correction */
61			setcolrgam(gamma);
62	greg	1.1
63			if (reverse) {
64			if (i > argc-1 \|\| i < argc-2)
65			goto userr;
66			if (openbarney(argv[i], "r") < 0) {
67			sprintf(errmsg, "cannot open input \"%s\"", argv[i]);
68			quiterr(errmsg);
69			}
70			if (i == argc-1 \|\| !strcmp(argv[i+1], "-"))
71			rafp = stdout;
72			else if ((rafp = fopen(argv[i+1], "w")) == NULL) {
73			sprintf(errmsg, "cannot open output \"%s\"",
74			argv[i+1]);
75			quiterr(errmsg);
76			}
77			/* put header */
78	greg	1.3	printargs(i, argv, rafp);
79	greg	1.7	fputformat(COLRFMT, rafp);
80	greg	1.1	putc('\n', rafp);
81	greg	1.2	fputresolu(YMAJOR\|YDECR, xmax, ymax, rafp);
82	greg	1.1	/* convert file */
83			bn2ra();
84			} else {
85			if (i != argc-2)
86			goto userr;
87			if (!strcmp(argv[i], "-"))
88			rafp = stdin;
89			else if ((rafp = fopen(argv[i], "r")) == NULL) {
90			sprintf(errmsg, "cannot open input \"%s\"",
91			argv[i]);
92			quiterr(errmsg);
93			}
94			/* get header */
95	greg	1.7	if (checkheader(rafp, COLRFMT, NULL) < 0 \|\|
96			fgetresolu(&xmax, &ymax, rafp) != (YMAJOR\|YDECR))
97	greg	1.1	quiterr("bad RADIANCE format");
98			if (openbarney(argv[i+1], "w") < 0) {
99			sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]);
100			quiterr(errmsg);
101			}
102			/* convert file */
103			ra2bn();
104			}
105			quiterr(NULL);
106			userr:
107	greg	1.8	fprintf(stderr, "Usage: %s [-g gamma][-e +/-stops] {input\|-} output\n",
108	greg	1.1	progname);
109	greg	1.8	fprintf(stderr, " or: %s -r [-g gamma][-e +/-stops] input [output\|-]\n",
110			progname);
111	greg	1.1	exit(1);
112			}
113
114
115			quiterr(err) /* print message and exit */
116			char *err;
117			{
118			if (err != NULL) {
119			fprintf(stderr, "%s: %s\n", progname, err);
120			exit(1);
121			}
122			exit(0);
123			}
124
125
126			openbarney(fname, mode) /* open barneyscan files */
127			char *fname;
128			char *mode;
129			{
130			static char suffix[3][4] = {"red", "grn", "blu"};
131			int i;
132			char file[128];
133
134			for (i = 0; i < 3; i++) {
135			sprintf(file, "%s.%s", fname, suffix[i]);
136			if ((bnfp[i] = fopen(file, mode)) == NULL)
137			return(-1);
138			}
139			if (mode[0] == 'r') { /* get header */
140			xmax = getint(bnfp[0]);
141			ymax = getint(bnfp[0]);
142			for (i = 1; i < 3; i++)
143			if (getint(bnfp[i]) != xmax \|\| getint(bnfp[i]) != ymax)
144			return(-1);
145			} else { /* put header */
146			for (i = 0; i < 3; i++) {
147			putint(xmax, bnfp[i]);
148			putint(ymax, bnfp[i]);
149			}
150			}
151			return(0);
152			}
153
154
155			int
156			getint(fp) /* get short int from barneyscan file */
157			register FILE *fp;
158			{
159			register short val;
160
161			val = getc(fp);
162			val \|= getc(fp) << 8;
163
164			return(val);
165			}
166
167
168			putint(val, fp) /* put short int to barneyscan file */
169			register int val;
170			register FILE *fp;
171			{
172			putc(val&0xff, fp);
173			putc((val >> 8)&0xff, fp);
174			}
175
176
177			ra2bn() /* convert radiance to barneyscan */
178			{
179	greg	1.6	register int i;
180			register COLR *inl;
181	greg	1.1	int j;
182
183	greg	1.6	if ((inl = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
184	greg	1.1	quiterr("out of memory");
185			for (j = 0; j < ymax; j++) {
186	greg	1.6	if (freadcolrs(inl, xmax, rafp) < 0)
187	greg	1.1	quiterr("error reading RADIANCE file");
188	greg	1.8	if (bradj)
189			shiftcolrs(inl, xmax, bradj);
190	greg	1.6	colrs_gambs(inl, xmax);
191			for (i = 0; i < xmax; i++) {
192			putc(inl[i][RED], bnfp[0]);
193			putc(inl[i][GRN], bnfp[1]);
194			putc(inl[i][BLU], bnfp[2]);
195			}
196			if (ferror(bnfp[0]) \|\| ferror(bnfp[1]) \|\| ferror(bnfp[2]))
197			quiterr("error writing Barney files");
198	greg	1.1	}
199	greg	1.4	free((char *)inl);
200	greg	1.1	}
201
202
203			bn2ra() /* convert barneyscan to radiance */
204			{
205	greg	1.6	register int i;
206			register COLR *outline;
207	greg	1.1	int j;
208
209	greg	1.6	if ((outline = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
210	greg	1.1	quiterr("out of memory");
211			for (j = 0; j < ymax; j++) {
212	greg	1.6	for (i = 0; i < xmax; i++) {
213			outline[i][RED] = getc(bnfp[0]);
214			outline[i][GRN] = getc(bnfp[1]);
215			outline[i][BLU] = getc(bnfp[2]);
216			}
217			if (feof(bnfp[0]) \|\| feof(bnfp[1]) \|\| feof(bnfp[2]))
218			quiterr("error reading barney file");
219			gambs_colrs(outline, xmax);
220	greg	1.8	if (bradj)
221			shiftcolrs(outline, xmax, bradj);
222	greg	1.6	if (fwritecolrs(outline, xmax, rafp) < 0)
223	greg	1.1	quiterr("error writing RADIANCE file");
224			}
225			free((char *)outline);
226			}