src/px/ra_bn.c

/* Copyright (c) 1986 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 */

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;
                        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);
                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 */
                getheader(rafp, NULL);
                if (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] {input|-} output\n", progname);
        fprintf(stderr, "   or: %s -r [-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);
}


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");
                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 (fwritecolrs(outline, xmax, rafp) < 0)
                        quiterr("error writing RADIANCE file");
        }
        free((char *)outline);
}
Revision:	1.6
Committed:	Fri Oct 19 21:44:29 1990 UTC (33 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+26 -27 lines
Log Message:	now uses colrops.c for gamma correction (faster)
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
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			char *progname;
22
23			char errmsg[128];
24
25			FILE rafp, bnfp[3];
26
27			int xmax, ymax;
28
29
30			main(argc, argv)
31			int argc;
32			char *argv[];
33			{
34			int reverse = 0;
35			int i;
36
37			progname = argv[0];
38
39			for (i = 1; i < argc; i++)
40			if (argv[i][0] == '-')
41			switch (argv[i][1]) {
42			case 'g':
43			gamma = atof(argv[++i]);
44			break;
45			case 'r':
46			reverse = !reverse;
47			break;
48			default:
49			goto userr;
50			}
51			else
52			break;
53	greg	1.6	/* set gamma correction */
54			setcolrgam(gamma);
55	greg	1.1
56			if (reverse) {
57			if (i > argc-1 \|\| i < argc-2)
58			goto userr;
59			if (openbarney(argv[i], "r") < 0) {
60			sprintf(errmsg, "cannot open input \"%s\"", argv[i]);
61			quiterr(errmsg);
62			}
63			if (i == argc-1 \|\| !strcmp(argv[i+1], "-"))
64			rafp = stdout;
65			else if ((rafp = fopen(argv[i+1], "w")) == NULL) {
66			sprintf(errmsg, "cannot open output \"%s\"",
67			argv[i+1]);
68			quiterr(errmsg);
69			}
70			/* put header */
71	greg	1.3	printargs(i, argv, rafp);
72	greg	1.1	putc('\n', rafp);
73	greg	1.2	fputresolu(YMAJOR\|YDECR, xmax, ymax, rafp);
74	greg	1.1	/* convert file */
75			bn2ra();
76			} else {
77			if (i != argc-2)
78			goto userr;
79			if (!strcmp(argv[i], "-"))
80			rafp = stdin;
81			else if ((rafp = fopen(argv[i], "r")) == NULL) {
82			sprintf(errmsg, "cannot open input \"%s\"",
83			argv[i]);
84			quiterr(errmsg);
85			}
86			/* get header */
87			getheader(rafp, NULL);
88	greg	1.2	if (fgetresolu(&xmax, &ymax, rafp) != (YMAJOR\|YDECR))
89	greg	1.1	quiterr("bad RADIANCE format");
90			if (openbarney(argv[i+1], "w") < 0) {
91			sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]);
92			quiterr(errmsg);
93			}
94			/* convert file */
95			ra2bn();
96			}
97			quiterr(NULL);
98			userr:
99	greg	1.5	fprintf(stderr, "Usage: %s [-g gamma] {input\|-} output\n", progname);
100	greg	1.1	fprintf(stderr, " or: %s -r [-g gamma] input [output\|-]\n",
101			progname);
102			exit(1);
103			}
104
105
106			quiterr(err) /* print message and exit */
107			char *err;
108			{
109			if (err != NULL) {
110			fprintf(stderr, "%s: %s\n", progname, err);
111			exit(1);
112			}
113			exit(0);
114			}
115
116
117			openbarney(fname, mode) /* open barneyscan files */
118			char *fname;
119			char *mode;
120			{
121			static char suffix[3][4] = {"red", "grn", "blu"};
122			int i;
123			char file[128];
124
125			for (i = 0; i < 3; i++) {
126			sprintf(file, "%s.%s", fname, suffix[i]);
127			if ((bnfp[i] = fopen(file, mode)) == NULL)
128			return(-1);
129			}
130			if (mode[0] == 'r') { /* get header */
131			xmax = getint(bnfp[0]);
132			ymax = getint(bnfp[0]);
133			for (i = 1; i < 3; i++)
134			if (getint(bnfp[i]) != xmax \|\| getint(bnfp[i]) != ymax)
135			return(-1);
136			} else { /* put header */
137			for (i = 0; i < 3; i++) {
138			putint(xmax, bnfp[i]);
139			putint(ymax, bnfp[i]);
140			}
141			}
142			return(0);
143			}
144
145
146			int
147			getint(fp) /* get short int from barneyscan file */
148			register FILE *fp;
149			{
150			register short val;
151
152			val = getc(fp);
153			val \|= getc(fp) << 8;
154
155			return(val);
156			}
157
158
159			putint(val, fp) /* put short int to barneyscan file */
160			register int val;
161			register FILE *fp;
162			{
163			putc(val&0xff, fp);
164			putc((val >> 8)&0xff, fp);
165			}
166
167
168			ra2bn() /* convert radiance to barneyscan */
169			{
170	greg	1.6	register int i;
171			register COLR *inl;
172	greg	1.1	int j;
173
174	greg	1.6	if ((inl = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
175	greg	1.1	quiterr("out of memory");
176			for (j = 0; j < ymax; j++) {
177	greg	1.6	if (freadcolrs(inl, xmax, rafp) < 0)
178	greg	1.1	quiterr("error reading RADIANCE file");
179	greg	1.6	colrs_gambs(inl, xmax);
180			for (i = 0; i < xmax; i++) {
181			putc(inl[i][RED], bnfp[0]);
182			putc(inl[i][GRN], bnfp[1]);
183			putc(inl[i][BLU], bnfp[2]);
184			}
185			if (ferror(bnfp[0]) \|\| ferror(bnfp[1]) \|\| ferror(bnfp[2]))
186			quiterr("error writing Barney files");
187	greg	1.1	}
188	greg	1.4	free((char *)inl);
189	greg	1.1	}
190
191
192			bn2ra() /* convert barneyscan to radiance */
193			{
194	greg	1.6	register int i;
195			register COLR *outline;
196	greg	1.1	int j;
197
198	greg	1.6	if ((outline = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
199	greg	1.1	quiterr("out of memory");
200			for (j = 0; j < ymax; j++) {
201	greg	1.6	for (i = 0; i < xmax; i++) {
202			outline[i][RED] = getc(bnfp[0]);
203			outline[i][GRN] = getc(bnfp[1]);
204			outline[i][BLU] = getc(bnfp[2]);
205			}
206			if (feof(bnfp[0]) \|\| feof(bnfp[1]) \|\| feof(bnfp[2]))
207			quiterr("error reading barney file");
208			gambs_colrs(outline, xmax);
209			if (fwritecolrs(outline, xmax, rafp) < 0)
210	greg	1.1	quiterr("error writing RADIANCE file");
211			}
212			free((char *)outline);
213			}