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 */


tputs(s)                        /* put out string preceded by a tab */
char    *s;
{
        double  d;
        COLOR   ctmp;
                                /* echo header line */
        putchar('\t');
        fputs(s, stdout);
        if (!original)
                return;
                                /* check for exposure */
        if (isexpos(s)) {
                d = 1.0/exposval(s);
                scalecolor(input[nfiles].coef, d);
        } else if (iscolcor(s)) {
                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);
        }
}


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);
                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);
        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:	1.9
Committed:	Thu Apr 18 10:19:48 1991 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+24 -2 lines
Log Message:	added -o option for original values
#	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
52			tputs(s) /* put out string preceded by a tab */
53			char *s;
54			{
55	greg	1.9	double d;
56			COLOR ctmp;
57			/* echo header line */
58	greg	1.1	putchar('\t');
59			fputs(s, stdout);
60	greg	1.9	if (!original)
61			return;
62			/* check for exposure */
63			if (isexpos(s)) {
64			d = 1.0/exposval(s);
65			scalecolor(input[nfiles].coef, d);
66			} else if (iscolcor(s)) {
67			colcorval(ctmp, s);
68			colval(input[nfiles].coef,RED) /= colval(ctmp,RED);
69			colval(input[nfiles].coef,GRN) /= colval(ctmp,GRN);
70			colval(input[nfiles].coef,BLU) /= colval(ctmp,BLU);
71			}
72	greg	1.1	}
73
74
75			main(argc, argv)
76			int argc;
77			char *argv[];
78			{
79	greg	1.8	extern double l_redin(), l_grnin(), l_bluin(), l_brtin(), atof();
80	greg	1.3	double f;
81	greg	1.1	int a;
82
83			funset(vcolin[RED], 1, l_redin);
84			funset(vcolin[GRN], 1, l_grnin);
85			funset(vcolin[BLU], 1, l_bluin);
86	greg	1.8	funset(vbrtin, 1, l_brtin);
87	greg	1.1
88			for (a = 1; a < argc; a++)
89			if (argv[a][0] == '-')
90			switch (argv[a][1]) {
91			case '\0':
92	greg	1.3	case 's':
93			case 'c':
94	greg	1.1	goto getfiles;
95			case 'x':
96			xres = atoi(argv[++a]);
97			break;
98			case 'y':
99			yres = atoi(argv[++a]);
100			break;
101			case 'w':
102			nowarn = !nowarn;
103			break;
104	greg	1.9	case 'o':
105			original = !original;
106			break;
107	greg	1.1	case 'f':
108			fcompile(argv[++a]);
109			break;
110			case 'e':
111	greg	1.7	scompile(argv[++a], NULL, 0);
112	greg	1.1	break;
113			default:
114	greg	1.3	goto usage;
115	greg	1.1	}
116			else
117			break;
118			getfiles:
119	greg	1.3	for (nfiles = 0; nfiles < MAXINP; nfiles++)
120			setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
121	greg	1.1	nfiles = 0;
122			for ( ; a < argc; a++) {
123			if (nfiles >= MAXINP) {
124			eputs(argv[0]);
125			eputs(": too many picture files\n");
126			quit(1);
127			}
128	greg	1.3	if (argv[a][0] == '-')
129			switch (argv[a][1]) {
130			case '\0':
131			input[nfiles].name = "<stdin>";
132			input[nfiles].fp = stdin;
133			break;
134			case 's':
135			f = atof(argv[++a]);
136			scalecolor(input[nfiles].coef, f);
137			continue;
138			case 'c':
139			colval(input[nfiles].coef,RED)*=atof(argv[++a]);
140			colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
141			colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
142			continue;
143			default:
144			goto usage;
145			}
146			else {
147	greg	1.1	input[nfiles].name = argv[a];
148			input[nfiles].fp = fopen(argv[a], "r");
149			if (input[nfiles].fp == NULL) {
150	greg	1.6	perror(argv[a]);
151	greg	1.1	quit(1);
152			}
153			}
154			fputs(input[nfiles].name, stdout);
155			fputs(":\n", stdout);
156			getheader(input[nfiles].fp, tputs);
157	greg	1.5	if (fgetresolu(&xpos, &ypos, input[nfiles].fp) !=
158			(YMAJOR\|YDECR)) {
159	greg	1.1	eputs(input[nfiles].name);
160			eputs(": bad picture size\n");
161			quit(1);
162			}
163			if (xres == 0 && yres == 0) {
164			xres = xpos;
165			yres = ypos;
166			} else if (xpos != xres \|\| ypos != yres) {
167			eputs(argv[0]);
168			eputs(": resolution mismatch\n");
169			quit(1);
170			}
171			input[nfiles].scan = (COLOR )emalloc(xressizeof(COLOR));
172			nfiles++;
173			}
174			printargs(argc, argv, stdout);
175			putchar('\n');
176	greg	1.5	fputresolu(YMAJOR\|YDECR, xres, yres, stdout);
177	greg	1.1	combine();
178			quit(0);
179	greg	1.3	usage:
180			eputs("Usage: ");
181			eputs(argv[0]);
182	greg	1.9	eputs(
183			" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n");
184	greg	1.3	quit(1);
185	greg	1.1	}
186
187
188			combine() /* combine pictures */
189			{
190	greg	1.8	EPNODE coldef[3], brtdef;
191	greg	1.1	COLOR *scanout;
192	greg	1.8	double d;
193	greg	1.1	register int i, j;
194			/* check defined variables */
195	greg	1.4	for (j = 0; j < 3; j++) {
196			if (vardefined(vcolout[j]))
197			coldef[j] = eparse(vcolout[j]);
198			else
199			coldef[j] = NULL;
200			}
201	greg	1.8	if (vardefined(vbrtout))
202			brtdef = eparse(vbrtout);
203			else
204			brtdef = NULL;
205			/* predefine variables */
206			varset(vnfiles, (double)nfiles);
207			varset(vxres, (double)xres);
208			varset(vyres, (double)yres);
209	greg	1.1	/* allocate scanline */
210			scanout = (COLOR )emalloc(xressizeof(COLOR));
211			/* combine files */
212			for (ypos = yres-1; ypos >= 0; ypos--) {
213	greg	1.8	for (i = 0; i < nfiles; i++)
214			if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
215			eputs(input[i].name);
216			eputs(": read error\n");
217			quit(1);
218			}
219			varset(vypos, (double)ypos);
220			for (xpos = 0; xpos < xres; xpos++) {
221	greg	1.9	for (i = 0; i < nfiles; i++)
222			multcolor(input[i].scan[xpos],input[i].coef);
223	greg	1.8	varset(vxpos, (double)xpos);
224			eclock++;
225			if (brtdef != NULL) {
226			d = evalue(brtdef);
227			if (d < 0.0)
228			d = 0.0;
229			setcolor(scanout[xpos], d, d, d);
230			} else {
231			for (j = 0; j < 3; j++) {
232			if (coldef[j] != NULL) {
233			colval(scanout[xpos],j) = evalue(coldef[j]);
234			} else {
235			colval(scanout[xpos],j) = 0.0;
236			for (i = 0; i < nfiles; i++)
237			colval(scanout[xpos],j) +=
238			colval(input[i].scan[xpos],j);
239	greg	1.1	}
240	greg	1.8	if (colval(scanout[xpos],j) < 0.0)
241			colval(scanout[xpos],j) = 0.0;
242			}
243	greg	1.1	}
244	greg	1.8	}
245			if (fwritescan(scanout, xres, stdout) < 0) {
246			perror("write error");
247			quit(1);
248			}
249	greg	1.1	}
250			efree(scanout);
251			}
252
253
254			double
255			colin(fn, ci) /* return color value for picture */
256			register int fn, ci;
257			{
258			if (fn == 0)
259			return((double)nfiles);
260			if (fn < 1 \|\| fn > nfiles) {
261			errno = EDOM;
262			return(0.0);
263			}
264			return(colval(input[fn-1].scan[xpos],ci));
265			}
266
267
268			double
269			l_redin() /* get red color */
270			{
271			return(colin((int)(argument(1)+.5), RED));
272			}
273
274
275			double
276			l_grnin() /* get green color */
277			{
278			return(colin((int)(argument(1)+.5), GRN));
279			}
280
281
282			double
283			l_bluin() /* get blue color */
284			{
285			return(colin((int)(argument(1)+.5), BLU));
286	greg	1.8	}
287
288
289			double
290			l_brtin() /* get brightness value */
291			{
292			register int fn;
293
294			fn = argument(1)+.5;
295			if (fn == 0)
296			return((double)nfiles);
297			if (fn < 1 \|\| fn > nfiles) {
298			errno = EDOM;
299			return(0.0);
300			}
301			return(bright(input[fn-1].scan[xpos]));
302	greg	1.1	}
303
304
305			wputs(msg)
306			char *msg;
307			{
308			if (!nowarn)
309			eputs(msg);
310			}
311
312
313			eputs(msg)
314			char *msg;
315			{
316			fputs(msg, stderr);
317			}
318
319
320			quit(code)
321			int code;
322			{
323			exit(code);
324			}