src/px/ra_xyze.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_xyze.c,v 2.8 2004/01/02 12:47:01 schorsch Exp $";
#endif
/*
 *  Program to convert between RADIANCE RGBE and XYZE formats
 *  Added white-balance adjustment 10/01 (GW).
 */

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

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

int  rgbinp = -1;                       /* input is RGBE? */
int  rgbout = 0;                        /* output should be RGBE? */
RGBPRIMS  inprims = STDPRIMS;           /* input primaries */
RGBPRIMS  outprims = STDPRIMS;          /* output primaries */
double  expcomp = 1.0;                  /* exposure compensation */
int  doflat = -1;                       /* produce flat file? */
char  *progname;

static gethfunc headline;
static void quiterr(char *err);
static void convert(void);


static int
headline(                               /* process header line */
        char    *s,
        void    *p
)
{
        char    fmt[32];

        if (formatval(fmt, s)) {        /* check if format string */
                if (!strcmp(fmt,COLRFMT))
                        rgbinp = 1;
                else if (!strcmp(fmt,CIEFMT))
                        rgbinp = 0;
                else
                        rgbinp = -2;
                return(0);              /* don't echo */
        }
        if (isprims(s)) {               /* get input primaries */
                primsval(inprims, s);
                return(0);              /* don't echo */
        }
                                        /* should I grok colcorr also? */
        return(fputs(s, stdout));
}


int
main(int  argc, char  *argv[])
{
        int  i;
        SET_DEFAULT_BINARY();
        SET_FILE_BINARY(stdin);
        SET_FILE_BINARY(stdout);
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'c':               /* rle-compressed output */
                                doflat = 0;
                                break;
                        case 'u':               /* flat output */
                                doflat = 1;
                                break;
                        case 'r':               /* RGBE output */
                                rgbout = 1;
                                break;
                        case 'p':               /* RGB primaries */
                                if (i+8 >= argc)
                                        goto userr;
                                outprims[RED][CIEX] = atof(argv[++i]);
                                outprims[RED][CIEY] = atof(argv[++i]);
                                outprims[GRN][CIEX] = atof(argv[++i]);
                                outprims[GRN][CIEY] = atof(argv[++i]);
                                outprims[BLU][CIEX] = atof(argv[++i]);
                                outprims[BLU][CIEY] = atof(argv[++i]);
                                outprims[WHT][CIEX] = atof(argv[++i]);
                                outprims[WHT][CIEY] = atof(argv[++i]);
                                break;
                        case 'e':               /* exposure compensation */
                                expcomp = atof(argv[++i]);
                                if (argv[i][0] == '+' || argv[i][0] == '-')
                                        expcomp = pow(2., expcomp);
                                break;
                        default:
                                goto userr;
                        }
                else
                        break;

        if (doflat < 0)
                doflat = !rgbout;
        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);
        }
        getheader(stdin, headline, NULL);
        if (rgbinp == -2)
                quiterr("unrecognized input file format");
        if (rgbinp == -1)
                rgbinp = !rgbout;
        printargs(argc, argv, stdout);          /* add to header */
        convert();                              /* convert picture */
        exit(0);
userr:
        fprintf(stderr, "Usage: %s [-r][-e exp][-c|-u]", progname);
        fprintf(stderr, "[-p rx ry gx gy bx by wx wy] [input [output]]\n");
        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
convert(void)                           /* convert to XYZE or RGBE picture */
{
        int     order;
        int     xmax, ymax;
        COLORMAT        xfm;
        register COLOR  *scanin;
        register COLR   *scanout;
        double  ourexp = expcomp;
        int     y;
        register int    x;
                                                /* compute transform */
        if (rgbout) {
                if (rgbinp) {                   /* RGBE -> RGBE */
                        comprgb2rgbWBmat(xfm, inprims, outprims);
                } else {                        /* XYZE -> RGBE */
                        compxyz2rgbWBmat(xfm, outprims);
                        ourexp *= WHTEFFICACY;
                }
        } else {
                if (rgbinp) {                   /* RGBE -> XYZE */
                        comprgb2xyzWBmat(xfm, inprims);
                        ourexp /= WHTEFFICACY;
                } else {                        /* XYZE -> XYZE */
                        for (y = 0; y < 3; y++)
                                for (x = 0; x < 3; x++)
                                        xfm[y][x] = x==y ? 1. : 0.;
                }
        }
        for (y = 0; y < 3; y++)
                for (x = 0; x < 3; x++)
                        xfm[y][x] *= expcomp;
                                                /* get input resolution */
        if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0)
                quiterr("bad picture format");
                                                /* complete output header */
        if (ourexp < 0.99 || ourexp > 1.01)
                fputexpos(ourexp, stdout);
        if (rgbout) {
                fputprims(outprims, stdout);
                fputformat(COLRFMT, stdout);
        } else
                fputformat(CIEFMT, stdout);
        putc('\n', stdout);
        fputresolu(order, xmax, ymax, stdout);
                                                /* allocate scanline */
        scanin = (COLOR *)malloc(xmax*sizeof(COLOR));
        if (scanin == NULL)
                quiterr("out of memory in convert");
        scanout = doflat ? (COLR *)malloc(xmax*sizeof(COLR)) : NULL;
                                                /* convert image */
        for (y = 0; y < ymax; y++) {
                if (freadscan(scanin, xmax, stdin) < 0)
                        quiterr("error reading input picture");
                for (x = 0; x < xmax; x++) {
                        colortrans(scanin[x], xfm, scanin[x]);
                        if (rgbout)
                                clipgamut(scanin[x], bright(scanin[x]),
                                                CGAMUT_LOWER, cblack, cwhite);
                }
                if (scanout != NULL) {
                        for (x = 0; x < xmax; x++)
                                setcolr(scanout[x], colval(scanin[x],RED),
                                                colval(scanin[x],GRN),
                                                colval(scanin[x],BLU));
                        fwrite((char *)scanout, sizeof(COLR), xmax, stdout);
                } else
                        fwritescan(scanin, xmax, stdout);
                if (ferror(stdout))
                        quiterr("error writing output picture");
        }
                                                /* free scanline */
        free((void *)scanin);
        if (scanout != NULL)
                free((void *)scanout);
}
Revision:	2.9
Committed:	Sun Mar 28 20:33:14 2004 UTC (20 years, 1 month ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R7P2, rad3R7P1, rad3R6, rad3R6P1
Changes since 2.8:	+12 -13 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	schorsch	2.9	static const char RCSid[] = "$Id: ra_xyze.c,v 2.8 2004/01/02 12:47:01 schorsch Exp $";
3	greg	2.1	#endif
4			/*
5			* Program to convert between RADIANCE RGBE and XYZE formats
6	greg	2.6	* Added white-balance adjustment 10/01 (GW).
7	greg	2.1	*/
8
9			#include <stdio.h>
10	greg	2.6	#include <string.h>
11	greg	2.1	#include <math.h>
12	greg	2.6	#include <time.h>
13	schorsch	2.7
14			#include "platform.h"
15	greg	2.1	#include "color.h"
16			#include "resolu.h"
17
18			int rgbinp = -1; /* input is RGBE? */
19			int rgbout = 0; /* output should be RGBE? */
20			RGBPRIMS inprims = STDPRIMS; /* input primaries */
21			RGBPRIMS outprims = STDPRIMS; /* output primaries */
22			double expcomp = 1.0; /* exposure compensation */
23			int doflat = -1; /* produce flat file? */
24			char *progname;
25
26	schorsch	2.8	static gethfunc headline;
27	schorsch	2.9	static void quiterr(char *err);
28			static void convert(void);
29
30	greg	2.1
31	schorsch	2.8
32			static int
33			headline( /* process header line */
34			char *s,
35			void *p
36			)
37	greg	2.1	{
38			char fmt[32];
39
40			if (formatval(fmt, s)) { /* check if format string */
41			if (!strcmp(fmt,COLRFMT))
42			rgbinp = 1;
43			else if (!strcmp(fmt,CIEFMT))
44			rgbinp = 0;
45			else
46			rgbinp = -2;
47	gwlarson	2.5	return(0); /* don't echo */
48	greg	2.1	}
49			if (isprims(s)) { /* get input primaries */
50			primsval(inprims, s);
51	gwlarson	2.5	return(0); /* don't echo */
52	greg	2.1	}
53			/* should I grok colcorr also? */
54	gwlarson	2.5	return(fputs(s, stdout));
55	greg	2.1	}
56
57
58	schorsch	2.9	int
59			main(int argc, char *argv[])
60	greg	2.1	{
61			int i;
62	schorsch	2.7	SET_DEFAULT_BINARY();
63			SET_FILE_BINARY(stdin);
64			SET_FILE_BINARY(stdout);
65	greg	2.1	progname = argv[0];
66
67			for (i = 1; i < argc; i++)
68			if (argv[i][0] == '-')
69			switch (argv[i][1]) {
70			case 'c': /* rle-compressed output */
71			doflat = 0;
72			break;
73			case 'u': /* flat output */
74			doflat = 1;
75			break;
76			case 'r': /* RGBE output */
77			rgbout = 1;
78			break;
79			case 'p': /* RGB primaries */
80	greg	2.2	if (i+8 >= argc)
81	greg	2.1	goto userr;
82			outprims[RED][CIEX] = atof(argv[++i]);
83			outprims[RED][CIEY] = atof(argv[++i]);
84			outprims[GRN][CIEX] = atof(argv[++i]);
85			outprims[GRN][CIEY] = atof(argv[++i]);
86			outprims[BLU][CIEX] = atof(argv[++i]);
87			outprims[BLU][CIEY] = atof(argv[++i]);
88			outprims[WHT][CIEX] = atof(argv[++i]);
89			outprims[WHT][CIEY] = atof(argv[++i]);
90			break;
91			case 'e': /* exposure compensation */
92			expcomp = atof(argv[++i]);
93			if (argv[i][0] == '+' \|\| argv[i][0] == '-')
94			expcomp = pow(2., expcomp);
95			break;
96			default:
97			goto userr;
98			}
99			else
100			break;
101
102			if (doflat < 0)
103			doflat = !rgbout;
104			if (i < argc-2)
105			goto userr;
106			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
107			fprintf(stderr, "%s: can't open input \"%s\"\n",
108			progname, argv[i]);
109			exit(1);
110			}
111			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
112			fprintf(stderr, "%s: can't open output \"%s\"\n",
113			progname, argv[i+1]);
114			exit(1);
115			}
116			getheader(stdin, headline, NULL);
117			if (rgbinp == -2)
118			quiterr("unrecognized input file format");
119			if (rgbinp == -1)
120			rgbinp = !rgbout;
121			printargs(argc, argv, stdout); /* add to header */
122			convert(); /* convert picture */
123			exit(0);
124			userr:
125			fprintf(stderr, "Usage: %s [-r][-e exp][-c\|-u]", progname);
126			fprintf(stderr, "[-p rx ry gx gy bx by wx wy] [input [output]]\n");
127			exit(1);
128			}
129
130
131	schorsch	2.9	static void
132			quiterr( /* print message and exit */
133			char *err
134			)
135	greg	2.1	{
136			if (err != NULL) {
137			fprintf(stderr, "%s: %s\n", progname, err);
138			exit(1);
139			}
140			exit(0);
141			}
142
143
144	schorsch	2.9	static void
145			convert(void) /* convert to XYZE or RGBE picture */
146	greg	2.1	{
147			int order;
148			int xmax, ymax;
149			COLORMAT xfm;
150			register COLOR *scanin;
151			register COLR *scanout;
152	gregl	2.4	double ourexp = expcomp;
153	greg	2.1	int y;
154			register int x;
155			/* compute transform */
156			if (rgbout) {
157			if (rgbinp) { /* RGBE -> RGBE */
158	greg	2.6	comprgb2rgbWBmat(xfm, inprims, outprims);
159	greg	2.1	} else { /* XYZE -> RGBE */
160	greg	2.6	compxyz2rgbWBmat(xfm, outprims);
161	gregl	2.4	ourexp *= WHTEFFICACY;
162	greg	2.1	}
163			} else {
164			if (rgbinp) { /* RGBE -> XYZE */
165	greg	2.6	comprgb2xyzWBmat(xfm, inprims);
166	gregl	2.4	ourexp /= WHTEFFICACY;
167	greg	2.1	} else { /* XYZE -> XYZE */
168			for (y = 0; y < 3; y++)
169			for (x = 0; x < 3; x++)
170	gregl	2.4	xfm[y][x] = x==y ? 1. : 0.;
171	greg	2.1	}
172			}
173	gregl	2.4	for (y = 0; y < 3; y++)
174			for (x = 0; x < 3; x++)
175			xfm[y][x] *= expcomp;
176	greg	2.1	/* get input resolution */
177			if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0)
178			quiterr("bad picture format");
179			/* complete output header */
180	gregl	2.4	if (ourexp < 0.99 \|\| ourexp > 1.01)
181			fputexpos(ourexp, stdout);
182	greg	2.1	if (rgbout) {
183			fputprims(outprims, stdout);
184			fputformat(COLRFMT, stdout);
185			} else
186			fputformat(CIEFMT, stdout);
187			putc('\n', stdout);
188			fputresolu(order, xmax, ymax, stdout);
189			/* allocate scanline */
190			scanin = (COLOR )malloc(xmaxsizeof(COLOR));
191			if (scanin == NULL)
192			quiterr("out of memory in convert");
193			scanout = doflat ? (COLR )malloc(xmaxsizeof(COLR)) : NULL;
194			/* convert image */
195			for (y = 0; y < ymax; y++) {
196			if (freadscan(scanin, xmax, stdin) < 0)
197			quiterr("error reading input picture");
198	greg	2.3	for (x = 0; x < xmax; x++) {
199	greg	2.1	colortrans(scanin[x], xfm, scanin[x]);
200	greg	2.3	if (rgbout)
201			clipgamut(scanin[x], bright(scanin[x]),
202			CGAMUT_LOWER, cblack, cwhite);
203			}
204	greg	2.1	if (scanout != NULL) {
205			for (x = 0; x < xmax; x++)
206			setcolr(scanout[x], colval(scanin[x],RED),
207			colval(scanin[x],GRN),
208			colval(scanin[x],BLU));
209			fwrite((char *)scanout, sizeof(COLR), xmax, stdout);
210			} else
211			fwritescan(scanin, xmax, stdout);
212			if (ferror(stdout))
213			quiterr("error writing output picture");
214			}
215			/* free scanline */
216	greg	2.6	free((void *)scanin);
217	greg	2.1	if (scanout != NULL)
218	greg	2.6	free((void *)scanout);
219	greg	2.1	}