src/px/ra_avs.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_avs.c,v 2.9 2003/02/22 02:07:27 greg Exp $";
#endif
/*
 *  Convert Radiance file to/from AVS file.
 */

#include  <stdio.h>
#include  <math.h>
#include  <time.h>

#include  "platform.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);
        }
        SET_FILE_BINARY(stdin);
        SET_FILE_BINARY(stdout);
        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:	2.10
Committed:	Thu Jun 5 19:29:34 2003 UTC (20 years, 11 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+5 -8 lines
Log Message:	Macros for setting binary file mode. Replacing MSDOS by _WIN32.
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	schorsch	2.10	static const char RCSid[] = "$Id: ra_avs.c,v 2.9 2003/02/22 02:07:27 greg Exp $";
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	2.9	#include <time.h>
11	schorsch	2.10
12			#include "platform.h"
13	greg	2.1	#include "color.h"
14			#include "resolu.h"
15
16	greg	2.4	double gamcor = 2.2; /* gamma correction */
17	greg	2.1
18			int bradj = 0; /* brightness adjustment */
19
20			char *progname;
21
22			int xmax, ymax;
23
24
25			main(argc, argv)
26			int argc;
27			char *argv[];
28			{
29	greg	2.2	extern long getint();
30	greg	2.1	int reverse = 0;
31			int i;
32
33			progname = argv[0];
34
35			for (i = 1; i < argc; i++)
36			if (argv[i][0] == '-')
37			switch (argv[i][1]) {
38			case 'g': /* gamma correction */
39	greg	2.4	gamcor = atof(argv[++i]);
40	greg	2.1	break;
41			case 'e': /* exposure adjustment */
42			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
43			goto userr;
44			bradj = atoi(argv[++i]);
45			break;
46			case 'r': /* reverse conversion */
47			reverse = 1;
48			break;
49			default:
50			goto userr;
51			}
52			else
53			break;
54
55			if (i < argc-2)
56			goto userr;
57			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
58			fprintf(stderr, "%s: can't open input \"%s\"\n",
59			progname, argv[i]);
60			exit(1);
61			}
62			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
63	greg	2.6	fprintf(stderr, "%s: can't open output \"%s\"\n",
64	greg	2.1	progname, argv[i+1]);
65			exit(1);
66			}
67	schorsch	2.10	SET_FILE_BINARY(stdin);
68			SET_FILE_BINARY(stdout);
69	greg	2.4	setcolrgam(gamcor); /* set up gamma correction */
70	greg	2.1	if (reverse) {
71			/* get their image resolution */
72	greg	2.2	xmax = getint(4, stdin);
73			ymax = getint(4, stdin);
74	greg	2.7	if (feof(stdin))
75			quiterr("empty input file");
76	greg	2.1	/* put our header */
77	greg	2.8	newheader("RADIANCE", stdout);
78	greg	2.1	printargs(i, argv, stdout);
79			fputformat(COLRFMT, stdout);
80			putchar('\n');
81			fprtresolu(xmax, ymax, stdout);
82			/* convert file */
83			avs2ra();
84			} else {
85			/* get our header */
86			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
87			fgetresolu(&xmax, &ymax, stdin) < 0)
88			quiterr("bad picture format");
89			/* write their header */
90	greg	2.2	putint((long)xmax, 4, stdout);
91			putint((long)ymax, 4, stdout);
92	greg	2.1	/* convert file */
93			ra2avs();
94			}
95			exit(0);
96			userr:
97			fprintf(stderr,
98			"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
99			progname);
100			exit(1);
101			}
102
103
104			quiterr(err) /* print message and exit */
105			char *err;
106			{
107			if (err != NULL) {
108			fprintf(stderr, "%s: %s\n", progname, err);
109			exit(1);
110			}
111			exit(0);
112			}
113
114
115			avs2ra() /* convert 24-bit scanlines to Radiance picture */
116			{
117			COLR *scanout;
118			register int x;
119			int y;
120			/* allocate scanline */
121			scanout = (COLR )malloc(xmaxsizeof(COLR));
122			if (scanout == NULL)
123			quiterr("out of memory in avs2ra");
124			/* convert image */
125			for (y = ymax-1; y >= 0; y--) {
126	greg	2.5	for (x = 0; x < xmax; x++) {
127			(void)getc(stdin); /* toss alpha */
128			scanout[x][RED] = getc(stdin);
129			scanout[x][GRN] = getc(stdin);
130			scanout[x][BLU] = getc(stdin);
131			}
132			if (feof(stdin) \| ferror(stdin))
133	greg	2.1	quiterr("error reading AVS image");
134			/* undo gamma */
135			gambs_colrs(scanout, xmax);
136			if (bradj) /* adjust exposure */
137			shiftcolrs(scanout, xmax, bradj);
138			if (fwritecolrs(scanout, xmax, stdout) < 0)
139			quiterr("error writing Radiance picture");
140			}
141			/* free scanline */
142	greg	2.9	free((void *)scanout);
143	greg	2.1	}
144
145
146			ra2avs() /* convert Radiance scanlines to 24-bit */
147			{
148			COLR *scanin;
149			register int x;
150			int y;
151			/* allocate scanline */
152			scanin = (COLR )malloc(xmaxsizeof(COLR));
153			if (scanin == NULL)
154			quiterr("out of memory in ra2avs");
155			/* convert image */
156			for (y = ymax-1; y >= 0; y--) {
157			if (freadcolrs(scanin, xmax, stdin) < 0)
158			quiterr("error reading Radiance picture");
159			if (bradj) /* adjust exposure */
160			shiftcolrs(scanin, xmax, bradj);
161			colrs_gambs(scanin, xmax); /* gamma correction */
162			for (x = 0; x < xmax; x++) {
163			putc(0, stdout); /* no alpha */
164			putc(scanin[x][RED], stdout);
165			putc(scanin[x][GRN], stdout);
166			putc(scanin[x][BLU], stdout);
167			}
168			if (ferror(stdout))
169			quiterr("error writing AVS file");
170			}
171			/* free scanline */
172	greg	2.9	free((void *)scanin);
173	greg	2.1	}