src/px/pcomb.c

/* Copyright (c) 1991 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  Combine picture files according to calcomp functions.
 *
 *      1/4/89
 */

#include <stdio.h>

#include <errno.h>

#include "color.h"

#include "calcomp.h"

#define MAXINP          32              /* maximum number of input files */

struct {
        char    *name;          /* file name */
        FILE    *fp;            /* stream pointer */
        COLOR   *scan;          /* input scanline */
        COLOR   coef;           /* coefficient */
}       input[MAXINP];                  /* input pictures */

int     nfiles;                         /* number of input files */

char    *vcolin[3] = {"ri", "gi", "bi"};
char    *vcolout[3] = {"ro", "go", "bo"};
#define vbrtin          "li"
#define vbrtout         "lo"

#define vnfiles         "nfiles"
#define vxres           "xres"
#define vyres           "yres"
#define vxpos           "x"
#define vypos           "y"

int     nowarn = 0;                     /* no warning messages? */

int     original = 0;                   /* origninal values? */

int     xres=0, yres=0;                 /* picture resolution */

int     xpos, ypos;                     /* picture position */

int     wrongformat = 0;


tputs(s)                        /* put out string preceded by a tab */
char    *s;
{
        char    fmt[32];
        double  d;
        COLOR   ctmp;

        if (isformat(s)) {                      /* check format */
                formatval(fmt, s);
                wrongformat = strcmp(fmt, COLRFMT);
        } else if (original && isexpos(s)) {    /* exposure */
                d = 1.0/exposval(s);
                scalecolor(input[nfiles].coef, d);
        } else if (original && iscolcor(s)) {   /* color correction */
                colcorval(ctmp, s);
                colval(input[nfiles].coef,RED) /= colval(ctmp,RED);
                colval(input[nfiles].coef,GRN) /= colval(ctmp,GRN);
                colval(input[nfiles].coef,BLU) /= colval(ctmp,BLU);
        } else {                                /* echo unaffected line */
                putchar('\t');
                fputs(s, stdout);
        }

}


main(argc, argv)
int     argc;
char    *argv[];
{
        extern double   l_redin(), l_grnin(), l_bluin(), l_brtin(), atof();
        double  f;
        int     a;
        
        funset(vcolin[RED], 1, l_redin);
        funset(vcolin[GRN], 1, l_grnin);
        funset(vcolin[BLU], 1, l_bluin);
        funset(vbrtin, 1, l_brtin);
        
        for (a = 1; a < argc; a++)
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case '\0':
                        case 's':
                        case 'c':
                                goto getfiles;
                        case 'x':
                                xres = atoi(argv[++a]);
                                break;
                        case 'y':
                                yres = atoi(argv[++a]);
                                break;
                        case 'w':
                                nowarn = !nowarn;
                                break;
                        case 'o':
                                original = !original;
                                break;
                        case 'f':
                                fcompile(argv[++a]);
                                break;
                        case 'e':
                                scompile(argv[++a], NULL, 0);
                                break;
                        default:
                                goto usage;
                        }
                else
                        break;
getfiles:
        for (nfiles = 0; nfiles < MAXINP; nfiles++)
                setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
        nfiles = 0;
        for ( ; a < argc; a++) {
                if (nfiles >= MAXINP) {
                        eputs(argv[0]);
                        eputs(": too many picture files\n");
                        quit(1);
                }
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case '\0':
                                input[nfiles].name = "<stdin>";
                                input[nfiles].fp = stdin;
                                break;
                        case 's':
                                f = atof(argv[++a]);
                                scalecolor(input[nfiles].coef, f);
                                continue;
                        case 'c':
                                colval(input[nfiles].coef,RED)*=atof(argv[++a]);
                                colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
                                colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
                                continue;
                        default:
                                goto usage;
                        }
                else {
                        input[nfiles].name = argv[a];
                        input[nfiles].fp = fopen(argv[a], "r");
                        if (input[nfiles].fp == NULL) {
                                perror(argv[a]);
                                quit(1);
                        }
                }
                fputs(input[nfiles].name, stdout);
                fputs(":\n", stdout);
                getheader(input[nfiles].fp, tputs, NULL);
                if (wrongformat) {
                        eputs(input[nfiles].name);
                        eputs(": not in Radiance picture format\n");
                        quit(1);
                }
                if (fgetresolu(&xpos, &ypos, input[nfiles].fp) !=
                                (YMAJOR|YDECR)) {
                        eputs(input[nfiles].name);
                        eputs(": bad picture size\n");
                        quit(1);
                }
                if (xres == 0 && yres == 0) {
                        xres = xpos;
                        yres = ypos;
                } else if (xpos != xres || ypos != yres) {
                        eputs(argv[0]);
                        eputs(": resolution mismatch\n");
                        quit(1);
                }
                input[nfiles].scan = (COLOR *)emalloc(xres*sizeof(COLOR));
                nfiles++;
        }
        printargs(argc, argv, stdout);
        fputformat(COLRFMT, stdout);
        putchar('\n');
        fputresolu(YMAJOR|YDECR, xres, yres, stdout);
        combine();
        quit(0);
usage:
        eputs("Usage: ");
        eputs(argv[0]);
        eputs(
" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n");
        quit(1);
}


combine()                       /* combine pictures */
{
        EPNODE  *coldef[3], *brtdef;
        COLOR   *scanout;
        double  d;
        register int    i, j;
                                                /* check defined variables */
        for (j = 0; j < 3; j++) {
                if (vardefined(vcolout[j]))
                        coldef[j] = eparse(vcolout[j]);
                else
                        coldef[j] = NULL;
        }
        if (vardefined(vbrtout))
                brtdef = eparse(vbrtout);
        else
                brtdef = NULL;
                                                /* predefine variables */
        varset(vnfiles, '=', (double)nfiles);
        varset(vxres, '=', (double)xres);
        varset(vyres, '=', (double)yres);
                                                /* allocate scanline */
        scanout = (COLOR *)emalloc(xres*sizeof(COLOR));
                                                /* combine files */
        for (ypos = yres-1; ypos >= 0; ypos--) {
            for (i = 0; i < nfiles; i++)
                    if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
                            eputs(input[i].name);
                            eputs(": read error\n");
                            quit(1);
                    }
            varset(vypos, '=', (double)ypos);
            for (xpos = 0; xpos < xres; xpos++) {
                for (i = 0; i < nfiles; i++)
                        multcolor(input[i].scan[xpos],input[i].coef);
                varset(vxpos, '=', (double)xpos);
                eclock++;
                if (brtdef != NULL) {
                    d = evalue(brtdef);
                    if (d < 0.0)
                        d = 0.0;
                    setcolor(scanout[xpos], d, d, d);
                } else {
                    for (j = 0; j < 3; j++) {
                        if (coldef[j] != NULL) {
                                colval(scanout[xpos],j) = evalue(coldef[j]);
                        } else {
                            colval(scanout[xpos],j) = 0.0;
                            for (i = 0; i < nfiles; i++)
                                colval(scanout[xpos],j) +=
                                        colval(input[i].scan[xpos],j);
                        }
                        if (colval(scanout[xpos],j) < 0.0)
                            colval(scanout[xpos],j) = 0.0;
                    }
                }
            }
            if (fwritescan(scanout, xres, stdout) < 0) {
                    perror("write error");
                    quit(1);
            }
        }
        efree(scanout);
}


double
colin(fn, ci)                   /* return color value for picture */
register int    fn, ci;
{
        if (fn == 0)
                return((double)nfiles);
        if (fn < 1 || fn > nfiles) {
                errno = EDOM;
                return(0.0);
        }
        return(colval(input[fn-1].scan[xpos],ci));
}


double
l_redin()                       /* get red color */
{
        return(colin((int)(argument(1)+.5), RED));
}


double
l_grnin()                       /* get green color */
{
        return(colin((int)(argument(1)+.5), GRN));
}


double
l_bluin()                       /* get blue color */
{
        return(colin((int)(argument(1)+.5), BLU));
}


double
l_brtin()                       /* get brightness value */
{
        register int    fn;

        fn = argument(1)+.5;
        if (fn == 0)
                return((double)nfiles);
        if (fn < 1 || fn > nfiles) {
                errno = EDOM;
                return(0.0);
        }
        return(bright(input[fn-1].scan[xpos]));
}


wputs(msg)
char    *msg;
{
        if (!nowarn)
                eputs(msg);
}


eputs(msg)
char    *msg;
{
        fputs(msg, stderr);
}


quit(code)
int     code;
{
        exit(code);
}
Revision:	1.11
Committed:	Tue Apr 23 13:03:31 1991 UTC (34 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.10:	+5 -5 lines
Log Message:	arguments to varset() changed
#	User	Rev	Content
1	greg	1.8	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* Combine picture files according to calcomp functions.
9			*
10			* 1/4/89
11			*/
12
13			#include <stdio.h>
14
15			#include <errno.h>
16
17			#include "color.h"
18
19			#include "calcomp.h"
20
21	greg	1.6	#define MAXINP 32 /* maximum number of input files */
22	greg	1.1
23			struct {
24			char name; / file name */
25			FILE fp; / stream pointer */
26			COLOR scan; / input scanline */
27	greg	1.3	COLOR coef; /* coefficient */
28	greg	1.1	} input[MAXINP]; /* input pictures */
29
30			int nfiles; /* number of input files */
31
32			char *vcolin[3] = {"ri", "gi", "bi"};
33			char *vcolout[3] = {"ro", "go", "bo"};
34	greg	1.8	#define vbrtin "li"
35			#define vbrtout "lo"
36	greg	1.1
37	greg	1.8	#define vnfiles "nfiles"
38			#define vxres "xres"
39			#define vyres "yres"
40	greg	1.1	#define vxpos "x"
41			#define vypos "y"
42
43			int nowarn = 0; /* no warning messages? */
44
45	greg	1.9	int original = 0; /* origninal values? */
46
47	greg	1.1	int xres=0, yres=0; /* picture resolution */
48
49			int xpos, ypos; /* picture position */
50
51	greg	1.10	int wrongformat = 0;
52	greg	1.1
53	greg	1.10
54	greg	1.1	tputs(s) /* put out string preceded by a tab */
55			char *s;
56			{
57	greg	1.10	char fmt[32];
58	greg	1.9	double d;
59			COLOR ctmp;
60	greg	1.10
61			if (isformat(s)) { /* check format */
62			formatval(fmt, s);
63			wrongformat = strcmp(fmt, COLRFMT);
64			} else if (original && isexpos(s)) { /* exposure */
65	greg	1.9	d = 1.0/exposval(s);
66			scalecolor(input[nfiles].coef, d);
67	greg	1.10	} else if (original && iscolcor(s)) { /* color correction */
68	greg	1.9	colcorval(ctmp, s);
69			colval(input[nfiles].coef,RED) /= colval(ctmp,RED);
70			colval(input[nfiles].coef,GRN) /= colval(ctmp,GRN);
71			colval(input[nfiles].coef,BLU) /= colval(ctmp,BLU);
72	greg	1.10	} else { /* echo unaffected line */
73			putchar('\t');
74			fputs(s, stdout);
75	greg	1.9	}
76	greg	1.10
77	greg	1.1	}
78
79
80			main(argc, argv)
81			int argc;
82			char *argv[];
83			{
84	greg	1.8	extern double l_redin(), l_grnin(), l_bluin(), l_brtin(), atof();
85	greg	1.3	double f;
86	greg	1.1	int a;
87
88			funset(vcolin[RED], 1, l_redin);
89			funset(vcolin[GRN], 1, l_grnin);
90			funset(vcolin[BLU], 1, l_bluin);
91	greg	1.8	funset(vbrtin, 1, l_brtin);
92	greg	1.1
93			for (a = 1; a < argc; a++)
94			if (argv[a][0] == '-')
95			switch (argv[a][1]) {
96			case '\0':
97	greg	1.3	case 's':
98			case 'c':
99	greg	1.1	goto getfiles;
100			case 'x':
101			xres = atoi(argv[++a]);
102			break;
103			case 'y':
104			yres = atoi(argv[++a]);
105			break;
106			case 'w':
107			nowarn = !nowarn;
108			break;
109	greg	1.9	case 'o':
110			original = !original;
111			break;
112	greg	1.1	case 'f':
113			fcompile(argv[++a]);
114			break;
115			case 'e':
116	greg	1.7	scompile(argv[++a], NULL, 0);
117	greg	1.1	break;
118			default:
119	greg	1.3	goto usage;
120	greg	1.1	}
121			else
122			break;
123			getfiles:
124	greg	1.3	for (nfiles = 0; nfiles < MAXINP; nfiles++)
125			setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
126	greg	1.1	nfiles = 0;
127			for ( ; a < argc; a++) {
128			if (nfiles >= MAXINP) {
129			eputs(argv[0]);
130			eputs(": too many picture files\n");
131			quit(1);
132			}
133	greg	1.3	if (argv[a][0] == '-')
134			switch (argv[a][1]) {
135			case '\0':
136			input[nfiles].name = "<stdin>";
137			input[nfiles].fp = stdin;
138			break;
139			case 's':
140			f = atof(argv[++a]);
141			scalecolor(input[nfiles].coef, f);
142			continue;
143			case 'c':
144			colval(input[nfiles].coef,RED)*=atof(argv[++a]);
145			colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
146			colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
147			continue;
148			default:
149			goto usage;
150			}
151			else {
152	greg	1.1	input[nfiles].name = argv[a];
153			input[nfiles].fp = fopen(argv[a], "r");
154			if (input[nfiles].fp == NULL) {
155	greg	1.6	perror(argv[a]);
156	greg	1.1	quit(1);
157			}
158			}
159			fputs(input[nfiles].name, stdout);
160			fputs(":\n", stdout);
161	greg	1.10	getheader(input[nfiles].fp, tputs, NULL);
162			if (wrongformat) {
163			eputs(input[nfiles].name);
164			eputs(": not in Radiance picture format\n");
165			quit(1);
166			}
167	greg	1.5	if (fgetresolu(&xpos, &ypos, input[nfiles].fp) !=
168			(YMAJOR\|YDECR)) {
169	greg	1.1	eputs(input[nfiles].name);
170			eputs(": bad picture size\n");
171			quit(1);
172			}
173			if (xres == 0 && yres == 0) {
174			xres = xpos;
175			yres = ypos;
176			} else if (xpos != xres \|\| ypos != yres) {
177			eputs(argv[0]);
178			eputs(": resolution mismatch\n");
179			quit(1);
180			}
181			input[nfiles].scan = (COLOR )emalloc(xressizeof(COLOR));
182			nfiles++;
183			}
184			printargs(argc, argv, stdout);
185	greg	1.10	fputformat(COLRFMT, stdout);
186	greg	1.1	putchar('\n');
187	greg	1.5	fputresolu(YMAJOR\|YDECR, xres, yres, stdout);
188	greg	1.1	combine();
189			quit(0);
190	greg	1.3	usage:
191			eputs("Usage: ");
192			eputs(argv[0]);
193	greg	1.9	eputs(
194			" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n");
195	greg	1.3	quit(1);
196	greg	1.1	}
197
198
199			combine() /* combine pictures */
200			{
201	greg	1.8	EPNODE coldef[3], brtdef;
202	greg	1.1	COLOR *scanout;
203	greg	1.8	double d;
204	greg	1.1	register int i, j;
205			/* check defined variables */
206	greg	1.4	for (j = 0; j < 3; j++) {
207			if (vardefined(vcolout[j]))
208			coldef[j] = eparse(vcolout[j]);
209			else
210			coldef[j] = NULL;
211			}
212	greg	1.8	if (vardefined(vbrtout))
213			brtdef = eparse(vbrtout);
214			else
215			brtdef = NULL;
216			/* predefine variables */
217	greg	1.11	varset(vnfiles, '=', (double)nfiles);
218			varset(vxres, '=', (double)xres);
219			varset(vyres, '=', (double)yres);
220	greg	1.1	/* allocate scanline */
221			scanout = (COLOR )emalloc(xressizeof(COLOR));
222			/* combine files */
223			for (ypos = yres-1; ypos >= 0; ypos--) {
224	greg	1.8	for (i = 0; i < nfiles; i++)
225			if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
226			eputs(input[i].name);
227			eputs(": read error\n");
228			quit(1);
229			}
230	greg	1.11	varset(vypos, '=', (double)ypos);
231	greg	1.8	for (xpos = 0; xpos < xres; xpos++) {
232	greg	1.9	for (i = 0; i < nfiles; i++)
233			multcolor(input[i].scan[xpos],input[i].coef);
234	greg	1.11	varset(vxpos, '=', (double)xpos);
235	greg	1.8	eclock++;
236			if (brtdef != NULL) {
237			d = evalue(brtdef);
238			if (d < 0.0)
239			d = 0.0;
240			setcolor(scanout[xpos], d, d, d);
241			} else {
242			for (j = 0; j < 3; j++) {
243			if (coldef[j] != NULL) {
244			colval(scanout[xpos],j) = evalue(coldef[j]);
245			} else {
246			colval(scanout[xpos],j) = 0.0;
247			for (i = 0; i < nfiles; i++)
248			colval(scanout[xpos],j) +=
249			colval(input[i].scan[xpos],j);
250	greg	1.1	}
251	greg	1.8	if (colval(scanout[xpos],j) < 0.0)
252			colval(scanout[xpos],j) = 0.0;
253			}
254	greg	1.1	}
255	greg	1.8	}
256			if (fwritescan(scanout, xres, stdout) < 0) {
257			perror("write error");
258			quit(1);
259			}
260	greg	1.1	}
261			efree(scanout);
262			}
263
264
265			double
266			colin(fn, ci) /* return color value for picture */
267			register int fn, ci;
268			{
269			if (fn == 0)
270			return((double)nfiles);
271			if (fn < 1 \|\| fn > nfiles) {
272			errno = EDOM;
273			return(0.0);
274			}
275			return(colval(input[fn-1].scan[xpos],ci));
276			}
277
278
279			double
280			l_redin() /* get red color */
281			{
282			return(colin((int)(argument(1)+.5), RED));
283			}
284
285
286			double
287			l_grnin() /* get green color */
288			{
289			return(colin((int)(argument(1)+.5), GRN));
290			}
291
292
293			double
294			l_bluin() /* get blue color */
295			{
296			return(colin((int)(argument(1)+.5), BLU));
297	greg	1.8	}
298
299
300			double
301			l_brtin() /* get brightness value */
302			{
303			register int fn;
304
305			fn = argument(1)+.5;
306			if (fn == 0)
307			return((double)nfiles);
308			if (fn < 1 \|\| fn > nfiles) {
309			errno = EDOM;
310			return(0.0);
311			}
312			return(bright(input[fn-1].scan[xpos]));
313	greg	1.1	}
314
315
316			wputs(msg)
317			char *msg;
318			{
319			if (!nowarn)
320			eputs(msg);
321			}
322
323
324			eputs(msg)
325			char *msg;
326			{
327			fputs(msg, stderr);
328			}
329
330
331			quit(code)
332			int code;
333			{
334			exit(code);
335			}