src/px/ra_avs.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_avs.c,v 2.10 2003/06/05 19:29:34 schorsch Exp $";
#endif
/*
 *  Convert Radiance file to/from AVS file.
 */

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

#include  "platform.h"
#include  "rtio.h"
#include  "color.h"
#include  "resolu.h"

double  gamcor = 2.2;                   /* gamma correction */

int  bradj = 0;                         /* brightness adjustment */

char  *progname;

int  xmax, ymax;

static void quiterr(char  *err);
static void avs2ra(void);
static void ra2avs(void);


int
main(
        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 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);
}


static void
quiterr(                /* print message and exit */
        char  *err
)
{
        if (err != NULL) {
                fprintf(stderr, "%s: %s\n", progname, err);
                exit(1);
        }
        exit(0);
}


static void
avs2ra(void)            /* 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);
}


static void
ra2avs(void)            /* 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:	2.11
Committed:	Sun Mar 28 20:33:14 2004 UTC (20 years, 1 month ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R6P1, rad3R6
Changes since 2.10:	+19 -9 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	schorsch	2.11	static const char RCSid[] = "$Id: ra_avs.c,v 2.10 2003/06/05 19:29:34 schorsch 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	schorsch	2.11	#include "rtio.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	schorsch	2.11	static void quiterr(char *err);
26			static void avs2ra(void);
27			static void ra2avs(void);
28	greg	2.1
29	schorsch	2.11
30			int
31			main(
32			int argc,
33			char *argv[]
34			)
35	greg	2.1	{
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': /* gamma correction */
45	greg	2.4	gamcor = atof(argv[++i]);
46	greg	2.1	break;
47			case 'e': /* exposure adjustment */
48			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
49			goto userr;
50			bradj = atoi(argv[++i]);
51			break;
52			case 'r': /* reverse conversion */
53			reverse = 1;
54			break;
55			default:
56			goto userr;
57			}
58			else
59			break;
60
61			if (i < argc-2)
62			goto userr;
63			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
64			fprintf(stderr, "%s: can't open input \"%s\"\n",
65			progname, argv[i]);
66			exit(1);
67			}
68			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
69	greg	2.6	fprintf(stderr, "%s: can't open output \"%s\"\n",
70	greg	2.1	progname, argv[i+1]);
71			exit(1);
72			}
73	schorsch	2.10	SET_FILE_BINARY(stdin);
74			SET_FILE_BINARY(stdout);
75	greg	2.4	setcolrgam(gamcor); /* set up gamma correction */
76	greg	2.1	if (reverse) {
77			/* get their image resolution */
78	greg	2.2	xmax = getint(4, stdin);
79			ymax = getint(4, stdin);
80	greg	2.7	if (feof(stdin))
81			quiterr("empty input file");
82	greg	2.1	/* put our header */
83	greg	2.8	newheader("RADIANCE", stdout);
84	greg	2.1	printargs(i, argv, stdout);
85			fputformat(COLRFMT, stdout);
86			putchar('\n');
87			fprtresolu(xmax, ymax, stdout);
88			/* convert file */
89			avs2ra();
90			} else {
91			/* get our header */
92			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
93			fgetresolu(&xmax, &ymax, stdin) < 0)
94			quiterr("bad picture format");
95			/* write their header */
96	greg	2.2	putint((long)xmax, 4, stdout);
97			putint((long)ymax, 4, stdout);
98	greg	2.1	/* convert file */
99			ra2avs();
100			}
101			exit(0);
102			userr:
103			fprintf(stderr,
104			"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
105			progname);
106			exit(1);
107			}
108
109
110	schorsch	2.11	static void
111			quiterr( /* print message and exit */
112			char *err
113			)
114	greg	2.1	{
115			if (err != NULL) {
116			fprintf(stderr, "%s: %s\n", progname, err);
117			exit(1);
118			}
119			exit(0);
120			}
121
122
123	schorsch	2.11	static void
124			avs2ra(void) /* convert 24-bit scanlines to Radiance picture */
125	greg	2.1	{
126			COLR *scanout;
127			register int x;
128			int y;
129			/* allocate scanline */
130			scanout = (COLR )malloc(xmaxsizeof(COLR));
131			if (scanout == NULL)
132			quiterr("out of memory in avs2ra");
133			/* convert image */
134			for (y = ymax-1; y >= 0; y--) {
135	greg	2.5	for (x = 0; x < xmax; x++) {
136			(void)getc(stdin); /* toss alpha */
137			scanout[x][RED] = getc(stdin);
138			scanout[x][GRN] = getc(stdin);
139			scanout[x][BLU] = getc(stdin);
140			}
141			if (feof(stdin) \| ferror(stdin))
142	greg	2.1	quiterr("error reading AVS image");
143			/* undo gamma */
144			gambs_colrs(scanout, xmax);
145			if (bradj) /* adjust exposure */
146			shiftcolrs(scanout, xmax, bradj);
147			if (fwritecolrs(scanout, xmax, stdout) < 0)
148			quiterr("error writing Radiance picture");
149			}
150			/* free scanline */
151	greg	2.9	free((void *)scanout);
152	greg	2.1	}
153
154
155	schorsch	2.11	static void
156			ra2avs(void) /* convert Radiance scanlines to 24-bit */
157	greg	2.1	{
158			COLR *scanin;
159			register int x;
160			int y;
161			/* allocate scanline */
162			scanin = (COLR )malloc(xmaxsizeof(COLR));
163			if (scanin == NULL)
164			quiterr("out of memory in ra2avs");
165			/* convert image */
166			for (y = ymax-1; y >= 0; y--) {
167			if (freadcolrs(scanin, xmax, stdin) < 0)
168			quiterr("error reading Radiance picture");
169			if (bradj) /* adjust exposure */
170			shiftcolrs(scanin, xmax, bradj);
171			colrs_gambs(scanin, xmax); /* gamma correction */
172			for (x = 0; x < xmax; x++) {
173			putc(0, stdout); /* no alpha */
174			putc(scanin[x][RED], stdout);
175			putc(scanin[x][GRN], stdout);
176			putc(scanin[x][BLU], stdout);
177			}
178			if (ferror(stdout))
179			quiterr("error writing AVS file");
180			}
181			/* free scanline */
182	greg	2.9	free((void *)scanin);
183	greg	2.1	}