src/px/ra_xyze.c

#ifndef lint
static const char       RCSid[] = "$Id: ra_xyze.c,v 2.9 2004/03/28 20:33:14 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? */
double  origexp = -1.0;                 /* original exposure */
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 (origexp > 0.0 && isexpos(s)) {
                origexp *= exposval(s);
                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 'o':               /* original exposure */
                                origexp = 1.0;
                                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][-o][-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  exp2do = expcomp;
        double  exp2report = expcomp;
        int     y;
        register int    x;
                                                /* recover original? */
        if (origexp > 0.0)
                exp2do /= origexp;
                                                /* compute transform */
        if (rgbout) {
                if (rgbinp) {                   /* RGBE -> RGBE */
                        comprgb2rgbWBmat(xfm, inprims, outprims);
                } else {                        /* XYZE -> RGBE */
                        compxyz2rgbWBmat(xfm, outprims);
                        if (origexp > 0.0)
                                exp2do /= WHTEFFICACY;
                        else
                                exp2report *= WHTEFFICACY;
                }
        } else {
                if (rgbinp) {                   /* RGBE -> XYZE */
                        comprgb2xyzWBmat(xfm, inprims);
                        if (origexp > 0.0)
                                exp2do *= WHTEFFICACY;
                        else
                                exp2report /= 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] *= exp2do;
                                                /* get input resolution */
        if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0)
                quiterr("bad picture format");
                                                /* complete output header */
        if ((exp2report < 0.99) | (exp2report > 1.01))
                fputexpos(exp2report, 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:	2.10
Committed:	Tue Aug 22 21:38:22 2006 UTC (17 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad4R2P2, rad5R0, rad4R2, rad4R1, rad4R0, rad3R8, rad3R9, rad4R2P1
Changes since 2.9:	+26 -8 lines
Log Message:	Added -o option to ra_xyze for original pixel values.
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.10	static const char RCSid[] = "$Id: ra_xyze.c,v 2.9 2004/03/28 20:33:14 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	greg	2.10	double origexp = -1.0; /* original exposure */
25	greg	2.1	char *progname;
26
27	schorsch	2.8	static gethfunc headline;
28	schorsch	2.9	static void quiterr(char *err);
29			static void convert(void);
30
31	greg	2.1
32	schorsch	2.8
33			static int
34			headline( /* process header line */
35			char *s,
36			void *p
37			)
38	greg	2.1	{
39			char fmt[32];
40
41			if (formatval(fmt, s)) { /* check if format string */
42			if (!strcmp(fmt,COLRFMT))
43			rgbinp = 1;
44			else if (!strcmp(fmt,CIEFMT))
45			rgbinp = 0;
46			else
47			rgbinp = -2;
48	gwlarson	2.5	return(0); /* don't echo */
49	greg	2.1	}
50	greg	2.10	if (origexp > 0.0 && isexpos(s)) {
51			origexp *= exposval(s);
52			return(0); /* don't echo */
53			}
54	greg	2.1	if (isprims(s)) { /* get input primaries */
55			primsval(inprims, s);
56	gwlarson	2.5	return(0); /* don't echo */
57	greg	2.1	}
58			/* should I grok colcorr also? */
59	gwlarson	2.5	return(fputs(s, stdout));
60	greg	2.1	}
61
62
63	schorsch	2.9	int
64			main(int argc, char *argv[])
65	greg	2.1	{
66			int i;
67	schorsch	2.7	SET_DEFAULT_BINARY();
68			SET_FILE_BINARY(stdin);
69			SET_FILE_BINARY(stdout);
70	greg	2.1	progname = argv[0];
71
72			for (i = 1; i < argc; i++)
73			if (argv[i][0] == '-')
74			switch (argv[i][1]) {
75			case 'c': /* rle-compressed output */
76			doflat = 0;
77			break;
78			case 'u': /* flat output */
79			doflat = 1;
80			break;
81			case 'r': /* RGBE output */
82			rgbout = 1;
83			break;
84			case 'p': /* RGB primaries */
85	greg	2.2	if (i+8 >= argc)
86	greg	2.1	goto userr;
87			outprims[RED][CIEX] = atof(argv[++i]);
88			outprims[RED][CIEY] = atof(argv[++i]);
89			outprims[GRN][CIEX] = atof(argv[++i]);
90			outprims[GRN][CIEY] = atof(argv[++i]);
91			outprims[BLU][CIEX] = atof(argv[++i]);
92			outprims[BLU][CIEY] = atof(argv[++i]);
93			outprims[WHT][CIEX] = atof(argv[++i]);
94			outprims[WHT][CIEY] = atof(argv[++i]);
95			break;
96	greg	2.10	case 'o': /* original exposure */
97			origexp = 1.0;
98			break;
99	greg	2.1	case 'e': /* exposure compensation */
100			expcomp = atof(argv[++i]);
101			if (argv[i][0] == '+' \|\| argv[i][0] == '-')
102			expcomp = pow(2., expcomp);
103			break;
104			default:
105			goto userr;
106			}
107			else
108			break;
109
110			if (doflat < 0)
111			doflat = !rgbout;
112			if (i < argc-2)
113			goto userr;
114			if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) {
115			fprintf(stderr, "%s: can't open input \"%s\"\n",
116			progname, argv[i]);
117			exit(1);
118			}
119			if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
120			fprintf(stderr, "%s: can't open output \"%s\"\n",
121			progname, argv[i+1]);
122			exit(1);
123			}
124			getheader(stdin, headline, NULL);
125			if (rgbinp == -2)
126			quiterr("unrecognized input file format");
127			if (rgbinp == -1)
128			rgbinp = !rgbout;
129			printargs(argc, argv, stdout); /* add to header */
130			convert(); /* convert picture */
131			exit(0);
132			userr:
133	greg	2.10	fprintf(stderr, "Usage: %s [-r][-o][-e exp][-c\|-u]", progname);
134	greg	2.1	fprintf(stderr, "[-p rx ry gx gy bx by wx wy] [input [output]]\n");
135			exit(1);
136			}
137
138
139	schorsch	2.9	static void
140			quiterr( /* print message and exit */
141			char *err
142			)
143	greg	2.1	{
144			if (err != NULL) {
145			fprintf(stderr, "%s: %s\n", progname, err);
146			exit(1);
147			}
148			exit(0);
149			}
150
151
152	schorsch	2.9	static void
153			convert(void) /* convert to XYZE or RGBE picture */
154	greg	2.1	{
155			int order;
156			int xmax, ymax;
157			COLORMAT xfm;
158			register COLOR *scanin;
159			register COLR *scanout;
160	greg	2.10	double exp2do = expcomp;
161			double exp2report = expcomp;
162	greg	2.1	int y;
163			register int x;
164	greg	2.10	/* recover original? */
165			if (origexp > 0.0)
166			exp2do /= origexp;
167	greg	2.1	/* compute transform */
168			if (rgbout) {
169			if (rgbinp) { /* RGBE -> RGBE */
170	greg	2.6	comprgb2rgbWBmat(xfm, inprims, outprims);
171	greg	2.1	} else { /* XYZE -> RGBE */
172	greg	2.6	compxyz2rgbWBmat(xfm, outprims);
173	greg	2.10	if (origexp > 0.0)
174			exp2do /= WHTEFFICACY;
175			else
176			exp2report *= WHTEFFICACY;
177	greg	2.1	}
178			} else {
179			if (rgbinp) { /* RGBE -> XYZE */
180	greg	2.6	comprgb2xyzWBmat(xfm, inprims);
181	greg	2.10	if (origexp > 0.0)
182			exp2do *= WHTEFFICACY;
183			else
184			exp2report /= WHTEFFICACY;
185	greg	2.1	} else { /* XYZE -> XYZE */
186			for (y = 0; y < 3; y++)
187			for (x = 0; x < 3; x++)
188	gregl	2.4	xfm[y][x] = x==y ? 1. : 0.;
189	greg	2.1	}
190			}
191	gregl	2.4	for (y = 0; y < 3; y++)
192			for (x = 0; x < 3; x++)
193	greg	2.10	xfm[y][x] *= exp2do;
194	greg	2.1	/* get input resolution */
195			if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0)
196			quiterr("bad picture format");
197			/* complete output header */
198	greg	2.10	if ((exp2report < 0.99) \| (exp2report > 1.01))
199			fputexpos(exp2report, stdout);
200	greg	2.1	if (rgbout) {
201			fputprims(outprims, stdout);
202			fputformat(COLRFMT, stdout);
203			} else
204			fputformat(CIEFMT, stdout);
205			putc('\n', stdout);
206			fputresolu(order, xmax, ymax, stdout);
207			/* allocate scanline */
208			scanin = (COLOR )malloc(xmaxsizeof(COLOR));
209			if (scanin == NULL)
210			quiterr("out of memory in convert");
211			scanout = doflat ? (COLR )malloc(xmaxsizeof(COLR)) : NULL;
212			/* convert image */
213			for (y = 0; y < ymax; y++) {
214			if (freadscan(scanin, xmax, stdin) < 0)
215			quiterr("error reading input picture");
216	greg	2.3	for (x = 0; x < xmax; x++) {
217	greg	2.1	colortrans(scanin[x], xfm, scanin[x]);
218	greg	2.3	if (rgbout)
219			clipgamut(scanin[x], bright(scanin[x]),
220			CGAMUT_LOWER, cblack, cwhite);
221			}
222	greg	2.1	if (scanout != NULL) {
223			for (x = 0; x < xmax; x++)
224			setcolr(scanout[x], colval(scanin[x],RED),
225			colval(scanin[x],GRN),
226			colval(scanin[x],BLU));
227			fwrite((char *)scanout, sizeof(COLR), xmax, stdout);
228			} else
229			fwritescan(scanin, xmax, stdout);
230			if (ferror(stdout))
231			quiterr("error writing output picture");
232			}
233			/* free scanline */
234	greg	2.6	free((void *)scanin);
235	greg	2.1	if (scanout != NULL)
236	greg	2.6	free((void *)scanout);
237	greg	2.1	}