src/px/ra_avs.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  Convert Radiance file to/from AVS file.
 */

#include  <stdio.h>
#include  <math.h>
#ifdef MSDOS
#include  <fcntl.h>
#endif
#include  <time.h>
#include  "color.h"
#include  "resolu.h"

double  gamcor = 2.2;                   /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;

int  xmax, ymax;


main(argc, argv)
int  argc;
char  *argv[];
{
        extern long  getint();
        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 correction */
                                gamcor = atof(argv[++i]);
                                break;
                        case 'e':               /* exposure adjustment */
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'r':               /* reverse conversion */
                                reverse = 1;
                                break;
                        default:
                                goto userr;
                        }
                else
                        break;

        if (i < argc-2)
                goto userr;
        if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
                fprintf(stderr, "%s: can't open input \"%s\"\n",
                                progname, argv[i]);
                exit(1);
        }
        if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
                fprintf(stderr, "%s: can't open output \"%s\"\n",
                                progname, argv[i+1]);
                exit(1);
        }
#ifdef MSDOS
        setmode(fileno(stdin), O_BINARY);
        setmode(fileno(stdout), O_BINARY);
#endif
        setcolrgam(gamcor);             /* set up gamma correction */
        if (reverse) {
                                        /* get their image resolution */
                xmax = getint(4, stdin);
                ymax = getint(4, stdin);
                if (feof(stdin))
                        quiterr("empty input file");
                                        /* put our header */
                newheader("RADIANCE", stdout);
                printargs(i, argv, stdout);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                fprtresolu(xmax, ymax, stdout);
                                        /* convert file */
                avs2ra();
        } else {
                                        /* get our header */
                if (checkheader(stdin, COLRFMT, NULL) < 0 ||
                                fgetresolu(&xmax, &ymax, stdin) < 0)
                        quiterr("bad picture format");
                                        /* write their header */
                putint((long)xmax, 4, stdout);
                putint((long)ymax, 4, stdout);
                                        /* convert file */
                ra2avs();
        }
        exit(0);
userr:
        fprintf(stderr,
                "Usage: %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);
}


avs2ra()                /* convert 24-bit scanlines to Radiance picture */
{
        COLR    *scanout;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanout = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanout == NULL)
                quiterr("out of memory in avs2ra");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                for (x = 0; x < xmax; x++) {
                        (void)getc(stdin);                      /* toss alpha */
                        scanout[x][RED] = getc(stdin);
                        scanout[x][GRN] = getc(stdin);
                        scanout[x][BLU] = getc(stdin);
                }
                if (feof(stdin) | ferror(stdin))
                        quiterr("error reading AVS image");
                                                /* undo gamma */
                gambs_colrs(scanout, xmax);
                if (bradj)                      /* adjust exposure */
                        shiftcolrs(scanout, xmax, bradj);
                if (fwritecolrs(scanout, xmax, stdout) < 0)
                        quiterr("error writing Radiance picture");
        }
                                                /* free scanline */
        free((void *)scanout);
}


ra2avs()                /* convert Radiance scanlines to 24-bit */
{
        COLR    *scanin;
        register int    x;
        int     y;
                                                /* allocate scanline */
        scanin = (COLR *)malloc(xmax*sizeof(COLR));
        if (scanin == NULL)
                quiterr("out of memory in ra2avs");
                                                /* convert image */
        for (y = ymax-1; y >= 0; y--) {
                if (freadcolrs(scanin, xmax, stdin) < 0)
                        quiterr("error reading Radiance picture");
                if (bradj)                      /* adjust exposure */
                        shiftcolrs(scanin, xmax, bradj);
                colrs_gambs(scanin, xmax);      /* gamma correction */
                for (x = 0; x < xmax; x++) {
                        putc(0, stdout);                /* no alpha */
                        putc(scanin[x][RED], stdout);
                        putc(scanin[x][GRN], stdout);
                        putc(scanin[x][BLU], stdout);
                }
                if (ferror(stdout))
                        quiterr("error writing AVS file");
        }
                                                /* free scanline */
        free((void *)scanin);
}
Revision:	2.9
Committed:	Sat Feb 22 02:07:27 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.8:	+4 -8 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.9	static const char RCSid[] = "$Id$";
3	greg	2.1	#endif
4			/*
5			* Convert Radiance file to/from AVS file.
6			*/
7
8			#include <stdio.h>
9	greg	2.3	#include <math.h>
10	greg	2.1	#ifdef MSDOS
11			#include <fcntl.h>
12			#endif
13	greg	2.9	#include <time.h>
14	greg	2.1	#include "color.h"
15			#include "resolu.h"
16
17	greg	2.4	double gamcor = 2.2; /* gamma correction */
18	greg	2.1
19			int bradj = 0; /* brightness adjustment */
20
21			char *progname;
22
23			int xmax, ymax;
24
25
26			main(argc, argv)
27			int argc;
28			char *argv[];
29			{
30	greg	2.2	extern long getint();
31	greg	2.1	int reverse = 0;
32			int i;
33
34			progname = argv[0];
35
36			for (i = 1; i < argc; i++)
37			if (argv[i][0] == '-')
38			switch (argv[i][1]) {
39			case 'g': /* gamma correction */
40	greg	2.4	gamcor = atof(argv[++i]);
41	greg	2.1	break;
42			case 'e': /* exposure adjustment */
43			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
44			goto userr;
45			bradj = atoi(argv[++i]);
46			break;
47			case 'r': /* reverse conversion */
48			reverse = 1;
49			break;
50			default:
51			goto userr;
52			}
53			else
54			break;
55
56			if (i < argc-2)
57			goto userr;
58			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
59			fprintf(stderr, "%s: can't open input \"%s\"\n",
60			progname, argv[i]);
61			exit(1);
62			}
63			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
64	greg	2.6	fprintf(stderr, "%s: can't open output \"%s\"\n",
65	greg	2.1	progname, argv[i+1]);
66			exit(1);
67			}
68			#ifdef MSDOS
69			setmode(fileno(stdin), O_BINARY);
70			setmode(fileno(stdout), O_BINARY);
71			#endif
72	greg	2.4	setcolrgam(gamcor); /* set up gamma correction */
73	greg	2.1	if (reverse) {
74			/* get their image resolution */
75	greg	2.2	xmax = getint(4, stdin);
76			ymax = getint(4, stdin);
77	greg	2.7	if (feof(stdin))
78			quiterr("empty input file");
79	greg	2.1	/* put our header */
80	greg	2.8	newheader("RADIANCE", stdout);
81	greg	2.1	printargs(i, argv, stdout);
82			fputformat(COLRFMT, stdout);
83			putchar('\n');
84			fprtresolu(xmax, ymax, stdout);
85			/* convert file */
86			avs2ra();
87			} else {
88			/* get our header */
89			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
90			fgetresolu(&xmax, &ymax, stdin) < 0)
91			quiterr("bad picture format");
92			/* write their header */
93	greg	2.2	putint((long)xmax, 4, stdout);
94			putint((long)ymax, 4, stdout);
95	greg	2.1	/* convert file */
96			ra2avs();
97			}
98			exit(0);
99			userr:
100			fprintf(stderr,
101			"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
102			progname);
103			exit(1);
104			}
105
106
107			quiterr(err) /* print message and exit */
108			char *err;
109			{
110			if (err != NULL) {
111			fprintf(stderr, "%s: %s\n", progname, err);
112			exit(1);
113			}
114			exit(0);
115			}
116
117
118			avs2ra() /* convert 24-bit scanlines to Radiance picture */
119			{
120			COLR *scanout;
121			register int x;
122			int y;
123			/* allocate scanline */
124			scanout = (COLR )malloc(xmaxsizeof(COLR));
125			if (scanout == NULL)
126			quiterr("out of memory in avs2ra");
127			/* convert image */
128			for (y = ymax-1; y >= 0; y--) {
129	greg	2.5	for (x = 0; x < xmax; x++) {
130			(void)getc(stdin); /* toss alpha */
131			scanout[x][RED] = getc(stdin);
132			scanout[x][GRN] = getc(stdin);
133			scanout[x][BLU] = getc(stdin);
134			}
135			if (feof(stdin) \| ferror(stdin))
136	greg	2.1	quiterr("error reading AVS image");
137			/* undo gamma */
138			gambs_colrs(scanout, xmax);
139			if (bradj) /* adjust exposure */
140			shiftcolrs(scanout, xmax, bradj);
141			if (fwritecolrs(scanout, xmax, stdout) < 0)
142			quiterr("error writing Radiance picture");
143			}
144			/* free scanline */
145	greg	2.9	free((void *)scanout);
146	greg	2.1	}
147
148
149			ra2avs() /* convert Radiance scanlines to 24-bit */
150			{
151			COLR *scanin;
152			register int x;
153			int y;
154			/* allocate scanline */
155			scanin = (COLR )malloc(xmaxsizeof(COLR));
156			if (scanin == NULL)
157			quiterr("out of memory in ra2avs");
158			/* convert image */
159			for (y = ymax-1; y >= 0; y--) {
160			if (freadcolrs(scanin, xmax, stdin) < 0)
161			quiterr("error reading Radiance picture");
162			if (bradj) /* adjust exposure */
163			shiftcolrs(scanin, xmax, bradj);
164			colrs_gambs(scanin, xmax); /* gamma correction */
165			for (x = 0; x < xmax; x++) {
166			putc(0, stdout); /* no alpha */
167			putc(scanin[x][RED], stdout);
168			putc(scanin[x][GRN], stdout);
169			putc(scanin[x][BLU], stdout);
170			}
171			if (ferror(stdout))
172			quiterr("error writing AVS file");
173			}
174			/* free scanline */
175	greg	2.9	free((void *)scanin);
176	greg	2.1	}