src/px/ra_bn.c

/* Copyright (c) 1992 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>

#ifdef MSDOS
#include  <fcntl.h>
#endif

#include  <math.h>

#include  "color.h"

#include  "resolu.h"

extern char  *malloc();

double  gamcor = 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;
#ifdef MSDOS
        extern int  _fmode;
        _fmode = O_BINARY;
        setmode(fileno(stdin), O_BINARY);
        setmode(fileno(stdout), O_BINARY);
#endif
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'g':
                                gamcor = 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(gamcor);

        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);
                fprtresolu(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) < 0)
                        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:	2.5
Committed:	Fri Oct 30 09:11:35 1992 UTC (31 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.4:	+3 -3 lines
Log Message:	renamed gamma to avoid conflict with some math libraries
#	User	Rev	Content
1	greg	2.3	/* Copyright (c) 1992 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	greg	2.3	#ifdef MSDOS
16			#include <fcntl.h>
17			#endif
18
19	greg	2.4	#include <math.h>
20
21	greg	1.1	#include "color.h"
22
23	greg	1.9	#include "resolu.h"
24	greg	1.1
25	greg	2.3	extern char *malloc();
26
27	greg	2.5	double gamcor = 2.0; /* gamma correction */
28	greg	1.1
29	greg	1.8	int bradj = 0; /* brightness adjustment */
30
31	greg	1.1	char *progname;
32
33			char errmsg[128];
34
35			FILE rafp, bnfp[3];
36
37			int xmax, ymax;
38
39
40			main(argc, argv)
41			int argc;
42			char *argv[];
43			{
44			int reverse = 0;
45			int i;
46	greg	2.3	#ifdef MSDOS
47			extern int _fmode;
48			_fmode = O_BINARY;
49			setmode(fileno(stdin), O_BINARY);
50			setmode(fileno(stdout), O_BINARY);
51			#endif
52	greg	1.1	progname = argv[0];
53
54			for (i = 1; i < argc; i++)
55			if (argv[i][0] == '-')
56			switch (argv[i][1]) {
57			case 'g':
58	greg	2.5	gamcor = atof(argv[++i]);
59	greg	1.1	break;
60			case 'r':
61			reverse = !reverse;
62			break;
63	greg	1.8	case 'e':
64			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
65			goto userr;
66			bradj = atoi(argv[++i]);
67			break;
68	greg	1.1	default:
69			goto userr;
70			}
71			else
72			break;
73	greg	1.6	/* set gamma correction */
74	greg	2.5	setcolrgam(gamcor);
75	greg	1.1
76			if (reverse) {
77			if (i > argc-1 \|\| i < argc-2)
78			goto userr;
79			if (openbarney(argv[i], "r") < 0) {
80			sprintf(errmsg, "cannot open input \"%s\"", argv[i]);
81			quiterr(errmsg);
82			}
83			if (i == argc-1 \|\| !strcmp(argv[i+1], "-"))
84			rafp = stdout;
85			else if ((rafp = fopen(argv[i+1], "w")) == NULL) {
86			sprintf(errmsg, "cannot open output \"%s\"",
87			argv[i+1]);
88			quiterr(errmsg);
89			}
90			/* put header */
91	greg	1.3	printargs(i, argv, rafp);
92	greg	1.7	fputformat(COLRFMT, rafp);
93	greg	1.1	putc('\n', rafp);
94	greg	1.9	fprtresolu(xmax, ymax, rafp);
95	greg	1.1	/* convert file */
96			bn2ra();
97			} else {
98			if (i != argc-2)
99			goto userr;
100			if (!strcmp(argv[i], "-"))
101			rafp = stdin;
102			else if ((rafp = fopen(argv[i], "r")) == NULL) {
103			sprintf(errmsg, "cannot open input \"%s\"",
104			argv[i]);
105			quiterr(errmsg);
106			}
107			/* get header */
108	greg	1.7	if (checkheader(rafp, COLRFMT, NULL) < 0 \|\|
109	greg	1.9	fgetresolu(&xmax, &ymax, rafp) < 0)
110	greg	1.1	quiterr("bad RADIANCE format");
111			if (openbarney(argv[i+1], "w") < 0) {
112			sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]);
113			quiterr(errmsg);
114			}
115			/* convert file */
116			ra2bn();
117			}
118			quiterr(NULL);
119			userr:
120	greg	1.8	fprintf(stderr, "Usage: %s [-g gamma][-e +/-stops] {input\|-} output\n",
121	greg	1.1	progname);
122	greg	1.8	fprintf(stderr, " or: %s -r [-g gamma][-e +/-stops] input [output\|-]\n",
123			progname);
124	greg	1.1	exit(1);
125			}
126
127
128			quiterr(err) /* print message and exit */
129			char *err;
130			{
131			if (err != NULL) {
132			fprintf(stderr, "%s: %s\n", progname, err);
133			exit(1);
134			}
135			exit(0);
136			}
137
138
139			openbarney(fname, mode) /* open barneyscan files */
140			char *fname;
141			char *mode;
142			{
143			static char suffix[3][4] = {"red", "grn", "blu"};
144			int i;
145			char file[128];
146
147			for (i = 0; i < 3; i++) {
148			sprintf(file, "%s.%s", fname, suffix[i]);
149			if ((bnfp[i] = fopen(file, mode)) == NULL)
150			return(-1);
151			}
152			if (mode[0] == 'r') { /* get header */
153			xmax = getint(bnfp[0]);
154			ymax = getint(bnfp[0]);
155			for (i = 1; i < 3; i++)
156			if (getint(bnfp[i]) != xmax \|\| getint(bnfp[i]) != ymax)
157			return(-1);
158			} else { /* put header */
159			for (i = 0; i < 3; i++) {
160			putint(xmax, bnfp[i]);
161			putint(ymax, bnfp[i]);
162			}
163			}
164			return(0);
165			}
166
167
168			int
169			getint(fp) /* get short int from barneyscan file */
170			register FILE *fp;
171			{
172			register short val;
173
174			val = getc(fp);
175			val \|= getc(fp) << 8;
176
177			return(val);
178			}
179
180
181			putint(val, fp) /* put short int to barneyscan file */
182			register int val;
183			register FILE *fp;
184			{
185			putc(val&0xff, fp);
186			putc((val >> 8)&0xff, fp);
187			}
188
189
190			ra2bn() /* convert radiance to barneyscan */
191			{
192	greg	1.6	register int i;
193			register COLR *inl;
194	greg	1.1	int j;
195
196	greg	1.6	if ((inl = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
197	greg	1.1	quiterr("out of memory");
198			for (j = 0; j < ymax; j++) {
199	greg	1.6	if (freadcolrs(inl, xmax, rafp) < 0)
200	greg	1.1	quiterr("error reading RADIANCE file");
201	greg	1.8	if (bradj)
202			shiftcolrs(inl, xmax, bradj);
203	greg	1.6	colrs_gambs(inl, xmax);
204			for (i = 0; i < xmax; i++) {
205			putc(inl[i][RED], bnfp[0]);
206			putc(inl[i][GRN], bnfp[1]);
207			putc(inl[i][BLU], bnfp[2]);
208			}
209			if (ferror(bnfp[0]) \|\| ferror(bnfp[1]) \|\| ferror(bnfp[2]))
210			quiterr("error writing Barney files");
211	greg	1.1	}
212	greg	1.4	free((char *)inl);
213	greg	1.1	}
214
215
216			bn2ra() /* convert barneyscan to radiance */
217			{
218	greg	1.6	register int i;
219			register COLR *outline;
220	greg	1.1	int j;
221
222	greg	1.6	if ((outline = (COLR )malloc(xmaxsizeof(COLR))) == NULL)
223	greg	1.1	quiterr("out of memory");
224			for (j = 0; j < ymax; j++) {
225	greg	1.6	for (i = 0; i < xmax; i++) {
226			outline[i][RED] = getc(bnfp[0]);
227			outline[i][GRN] = getc(bnfp[1]);
228			outline[i][BLU] = getc(bnfp[2]);
229			}
230			if (feof(bnfp[0]) \|\| feof(bnfp[1]) \|\| feof(bnfp[2]))
231			quiterr("error reading barney file");
232			gambs_colrs(outline, xmax);
233	greg	1.8	if (bradj)
234			shiftcolrs(outline, xmax, bradj);
235	greg	1.6	if (fwritecolrs(outline, xmax, rafp) < 0)
236	greg	1.1	quiterr("error writing RADIANCE file");
237			}
238			free((char *)outline);
239			}