src/px/ra_xyze.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_xyze.c,v 2.7 2003/06/05 19:29:34 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 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));
}


main(argc, argv)
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);
}


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


convert()                               /* 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:	2.8
Committed:	Fri Jan 2 12:47:01 2004 UTC (20 years, 3 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.7:	+8 -4 lines
Log Message:	Fixed typing/prototype of getheader() and its callback.
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	schorsch	2.8	static const char RCSid[] = "$Id: ra_xyze.c,v 2.7 2003/06/05 19:29:34 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
20			int rgbout = 0; /* output should be RGBE? */
21
22			RGBPRIMS inprims = STDPRIMS; /* input primaries */
23
24			RGBPRIMS outprims = STDPRIMS; /* output primaries */
25
26			double expcomp = 1.0; /* exposure compensation */
27
28			int doflat = -1; /* produce flat file? */
29
30			char *progname;
31
32	schorsch	2.8	static gethfunc headline;
33	greg	2.1
34	schorsch	2.8
35			static int
36			headline( /* process header line */
37			char *s,
38			void *p
39			)
40	greg	2.1	{
41			char fmt[32];
42
43			if (formatval(fmt, s)) { /* check if format string */
44			if (!strcmp(fmt,COLRFMT))
45			rgbinp = 1;
46			else if (!strcmp(fmt,CIEFMT))
47			rgbinp = 0;
48			else
49			rgbinp = -2;
50	gwlarson	2.5	return(0); /* don't echo */
51	greg	2.1	}
52			if (isprims(s)) { /* get input primaries */
53			primsval(inprims, s);
54	gwlarson	2.5	return(0); /* don't echo */
55	greg	2.1	}
56			/* should I grok colcorr also? */
57	gwlarson	2.5	return(fputs(s, stdout));
58	greg	2.1	}
59
60
61			main(argc, argv)
62			int argc;
63			char *argv[];
64			{
65			int i;
66	schorsch	2.7	SET_DEFAULT_BINARY();
67			SET_FILE_BINARY(stdin);
68			SET_FILE_BINARY(stdout);
69	greg	2.1	progname = argv[0];
70
71			for (i = 1; i < argc; i++)
72			if (argv[i][0] == '-')
73			switch (argv[i][1]) {
74			case 'c': /* rle-compressed output */
75			doflat = 0;
76			break;
77			case 'u': /* flat output */
78			doflat = 1;
79			break;
80			case 'r': /* RGBE output */
81			rgbout = 1;
82			break;
83			case 'p': /* RGB primaries */
84	greg	2.2	if (i+8 >= argc)
85	greg	2.1	goto userr;
86			outprims[RED][CIEX] = atof(argv[++i]);
87			outprims[RED][CIEY] = atof(argv[++i]);
88			outprims[GRN][CIEX] = atof(argv[++i]);
89			outprims[GRN][CIEY] = atof(argv[++i]);
90			outprims[BLU][CIEX] = atof(argv[++i]);
91			outprims[BLU][CIEY] = atof(argv[++i]);
92			outprims[WHT][CIEX] = atof(argv[++i]);
93			outprims[WHT][CIEY] = atof(argv[++i]);
94			break;
95			case 'e': /* exposure compensation */
96			expcomp = atof(argv[++i]);
97			if (argv[i][0] == '+' \|\| argv[i][0] == '-')
98			expcomp = pow(2., expcomp);
99			break;
100			default:
101			goto userr;
102			}
103			else
104			break;
105
106			if (doflat < 0)
107			doflat = !rgbout;
108			if (i < argc-2)
109			goto userr;
110			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
111			fprintf(stderr, "%s: can't open input \"%s\"\n",
112			progname, argv[i]);
113			exit(1);
114			}
115			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
116			fprintf(stderr, "%s: can't open output \"%s\"\n",
117			progname, argv[i+1]);
118			exit(1);
119			}
120			getheader(stdin, headline, NULL);
121			if (rgbinp == -2)
122			quiterr("unrecognized input file format");
123			if (rgbinp == -1)
124			rgbinp = !rgbout;
125			printargs(argc, argv, stdout); /* add to header */
126			convert(); /* convert picture */
127			exit(0);
128			userr:
129			fprintf(stderr, "Usage: %s [-r][-e exp][-c\|-u]", progname);
130			fprintf(stderr, "[-p rx ry gx gy bx by wx wy] [input [output]]\n");
131			exit(1);
132			}
133
134
135			quiterr(err) /* print message and exit */
136			char *err;
137			{
138			if (err != NULL) {
139			fprintf(stderr, "%s: %s\n", progname, err);
140			exit(1);
141			}
142			exit(0);
143			}
144
145
146			convert() /* convert to XYZE or RGBE picture */
147			{
148			int order;
149			int xmax, ymax;
150			COLORMAT xfm;
151			register COLOR *scanin;
152			register COLR *scanout;
153	gregl	2.4	double ourexp = expcomp;
154	greg	2.1	int y;
155			register int x;
156			/* compute transform */
157			if (rgbout) {
158			if (rgbinp) { /* RGBE -> RGBE */
159	greg	2.6	comprgb2rgbWBmat(xfm, inprims, outprims);
160	greg	2.1	} else { /* XYZE -> RGBE */
161	greg	2.6	compxyz2rgbWBmat(xfm, outprims);
162	gregl	2.4	ourexp *= WHTEFFICACY;
163	greg	2.1	}
164			} else {
165			if (rgbinp) { /* RGBE -> XYZE */
166	greg	2.6	comprgb2xyzWBmat(xfm, inprims);
167	gregl	2.4	ourexp /= WHTEFFICACY;
168	greg	2.1	} else { /* XYZE -> XYZE */
169			for (y = 0; y < 3; y++)
170			for (x = 0; x < 3; x++)
171	gregl	2.4	xfm[y][x] = x==y ? 1. : 0.;
172	greg	2.1	}
173			}
174	gregl	2.4	for (y = 0; y < 3; y++)
175			for (x = 0; x < 3; x++)
176			xfm[y][x] *= expcomp;
177	greg	2.1	/* get input resolution */
178			if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0)
179			quiterr("bad picture format");
180			/* complete output header */
181	gregl	2.4	if (ourexp < 0.99 \|\| ourexp > 1.01)
182			fputexpos(ourexp, stdout);
183	greg	2.1	if (rgbout) {
184			fputprims(outprims, stdout);
185			fputformat(COLRFMT, stdout);
186			} else
187			fputformat(CIEFMT, stdout);
188			putc('\n', stdout);
189			fputresolu(order, xmax, ymax, stdout);
190			/* allocate scanline */
191			scanin = (COLOR )malloc(xmaxsizeof(COLOR));
192			if (scanin == NULL)
193			quiterr("out of memory in convert");
194			scanout = doflat ? (COLR )malloc(xmaxsizeof(COLR)) : NULL;
195			/* convert image */
196			for (y = 0; y < ymax; y++) {
197			if (freadscan(scanin, xmax, stdin) < 0)
198			quiterr("error reading input picture");
199	greg	2.3	for (x = 0; x < xmax; x++) {
200	greg	2.1	colortrans(scanin[x], xfm, scanin[x]);
201	greg	2.3	if (rgbout)
202			clipgamut(scanin[x], bright(scanin[x]),
203			CGAMUT_LOWER, cblack, cwhite);
204			}
205	greg	2.1	if (scanout != NULL) {
206			for (x = 0; x < xmax; x++)
207			setcolr(scanout[x], colval(scanin[x],RED),
208			colval(scanin[x],GRN),
209			colval(scanin[x],BLU));
210			fwrite((char *)scanout, sizeof(COLR), xmax, stdout);
211			} else
212			fwritescan(scanin, xmax, stdout);
213			if (ferror(stdout))
214			quiterr("error writing output picture");
215			}
216			/* free scanline */
217	greg	2.6	free((void *)scanin);
218	greg	2.1	if (scanout != NULL)
219	greg	2.6	free((void *)scanout);
220	greg	2.1	}