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

int     xpos, ypos;                     /* picture position */


tputs(s)                        /* put out string preceded by a tab */
char    *s;
{
        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 '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][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] picture ..]\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++) {
                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].coef,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:	1.8
Committed:	Thu Apr 18 08:05:57 1991 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+67 -30 lines
Log Message:	added variables for luminance in and out, xres, yres, nfiles
#	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			int xres=0, yres=0; /* picture resolution */
46
47			int xpos, ypos; /* picture position */
48
49
50			tputs(s) /* put out string preceded by a tab */
51			char *s;
52			{
53			putchar('\t');
54			fputs(s, stdout);
55			}
56
57
58			main(argc, argv)
59			int argc;
60			char *argv[];
61			{
62	greg	1.8	extern double l_redin(), l_grnin(), l_bluin(), l_brtin(), atof();
63	greg	1.3	double f;
64	greg	1.1	int a;
65
66			funset(vcolin[RED], 1, l_redin);
67			funset(vcolin[GRN], 1, l_grnin);
68			funset(vcolin[BLU], 1, l_bluin);
69	greg	1.8	funset(vbrtin, 1, l_brtin);
70	greg	1.1
71			for (a = 1; a < argc; a++)
72			if (argv[a][0] == '-')
73			switch (argv[a][1]) {
74			case '\0':
75	greg	1.3	case 's':
76			case 'c':
77	greg	1.1	goto getfiles;
78			case 'x':
79			xres = atoi(argv[++a]);
80			break;
81			case 'y':
82			yres = atoi(argv[++a]);
83			break;
84			case 'w':
85			nowarn = !nowarn;
86			break;
87			case 'f':
88			fcompile(argv[++a]);
89			break;
90			case 'e':
91	greg	1.7	scompile(argv[++a], NULL, 0);
92	greg	1.1	break;
93			default:
94	greg	1.3	goto usage;
95	greg	1.1	}
96			else
97			break;
98			getfiles:
99	greg	1.3	for (nfiles = 0; nfiles < MAXINP; nfiles++)
100			setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
101	greg	1.1	nfiles = 0;
102			for ( ; a < argc; a++) {
103			if (nfiles >= MAXINP) {
104			eputs(argv[0]);
105			eputs(": too many picture files\n");
106			quit(1);
107			}
108	greg	1.3	if (argv[a][0] == '-')
109			switch (argv[a][1]) {
110			case '\0':
111			input[nfiles].name = "<stdin>";
112			input[nfiles].fp = stdin;
113			break;
114			case 's':
115			f = atof(argv[++a]);
116			scalecolor(input[nfiles].coef, f);
117			continue;
118			case 'c':
119			colval(input[nfiles].coef,RED)*=atof(argv[++a]);
120			colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
121			colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
122			continue;
123			default:
124			goto usage;
125			}
126			else {
127	greg	1.1	input[nfiles].name = argv[a];
128			input[nfiles].fp = fopen(argv[a], "r");
129			if (input[nfiles].fp == NULL) {
130	greg	1.6	perror(argv[a]);
131	greg	1.1	quit(1);
132			}
133			}
134			fputs(input[nfiles].name, stdout);
135			fputs(":\n", stdout);
136			getheader(input[nfiles].fp, tputs);
137	greg	1.5	if (fgetresolu(&xpos, &ypos, input[nfiles].fp) !=
138			(YMAJOR\|YDECR)) {
139	greg	1.1	eputs(input[nfiles].name);
140			eputs(": bad picture size\n");
141			quit(1);
142			}
143			if (xres == 0 && yres == 0) {
144			xres = xpos;
145			yres = ypos;
146			} else if (xpos != xres \|\| ypos != yres) {
147			eputs(argv[0]);
148			eputs(": resolution mismatch\n");
149			quit(1);
150			}
151			input[nfiles].scan = (COLOR )emalloc(xressizeof(COLOR));
152			nfiles++;
153			}
154			printargs(argc, argv, stdout);
155			putchar('\n');
156	greg	1.5	fputresolu(YMAJOR\|YDECR, xres, yres, stdout);
157	greg	1.1	combine();
158			quit(0);
159	greg	1.3	usage:
160			eputs("Usage: ");
161			eputs(argv[0]);
162			eputs(" [-w][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] picture ..]\n");
163			quit(1);
164	greg	1.1	}
165
166
167			combine() /* combine pictures */
168			{
169	greg	1.8	EPNODE coldef[3], brtdef;
170	greg	1.1	COLOR *scanout;
171	greg	1.8	double d;
172	greg	1.1	register int i, j;
173			/* check defined variables */
174	greg	1.4	for (j = 0; j < 3; j++) {
175			if (vardefined(vcolout[j]))
176			coldef[j] = eparse(vcolout[j]);
177			else
178			coldef[j] = NULL;
179			}
180	greg	1.8	if (vardefined(vbrtout))
181			brtdef = eparse(vbrtout);
182			else
183			brtdef = NULL;
184			/* predefine variables */
185			varset(vnfiles, (double)nfiles);
186			varset(vxres, (double)xres);
187			varset(vyres, (double)yres);
188	greg	1.1	/* allocate scanline */
189			scanout = (COLOR )emalloc(xressizeof(COLOR));
190			/* combine files */
191			for (ypos = yres-1; ypos >= 0; ypos--) {
192	greg	1.8	for (i = 0; i < nfiles; i++)
193			if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
194			eputs(input[i].name);
195			eputs(": read error\n");
196			quit(1);
197			}
198			varset(vypos, (double)ypos);
199			for (xpos = 0; xpos < xres; xpos++) {
200			varset(vxpos, (double)xpos);
201			eclock++;
202			if (brtdef != NULL) {
203			d = evalue(brtdef);
204			if (d < 0.0)
205			d = 0.0;
206			setcolor(scanout[xpos], d, d, d);
207			} else {
208			for (j = 0; j < 3; j++) {
209			if (coldef[j] != NULL) {
210			colval(scanout[xpos],j) = evalue(coldef[j]);
211			} else {
212			colval(scanout[xpos],j) = 0.0;
213			for (i = 0; i < nfiles; i++)
214			colval(scanout[xpos],j) +=
215			colval(input[i].coef,j) *
216			colval(input[i].scan[xpos],j);
217	greg	1.1	}
218	greg	1.8	if (colval(scanout[xpos],j) < 0.0)
219			colval(scanout[xpos],j) = 0.0;
220			}
221	greg	1.1	}
222	greg	1.8	}
223			if (fwritescan(scanout, xres, stdout) < 0) {
224			perror("write error");
225			quit(1);
226			}
227	greg	1.1	}
228			efree(scanout);
229			}
230
231
232			double
233			colin(fn, ci) /* return color value for picture */
234			register int fn, ci;
235			{
236			if (fn == 0)
237			return((double)nfiles);
238			if (fn < 1 \|\| fn > nfiles) {
239			errno = EDOM;
240			return(0.0);
241			}
242			return(colval(input[fn-1].scan[xpos],ci));
243			}
244
245
246			double
247			l_redin() /* get red color */
248			{
249			return(colin((int)(argument(1)+.5), RED));
250			}
251
252
253			double
254			l_grnin() /* get green color */
255			{
256			return(colin((int)(argument(1)+.5), GRN));
257			}
258
259
260			double
261			l_bluin() /* get blue color */
262			{
263			return(colin((int)(argument(1)+.5), BLU));
264	greg	1.8	}
265
266
267			double
268			l_brtin() /* get brightness value */
269			{
270			register int fn;
271
272			fn = argument(1)+.5;
273			if (fn == 0)
274			return((double)nfiles);
275			if (fn < 1 \|\| fn > nfiles) {
276			errno = EDOM;
277			return(0.0);
278			}
279			return(bright(input[fn-1].scan[xpos]));
280	greg	1.1	}
281
282
283			wputs(msg)
284			char *msg;
285			{
286			if (!nowarn)
287			eputs(msg);
288			}
289
290
291			eputs(msg)
292			char *msg;
293			{
294			fputs(msg, stderr);
295			}
296
297
298			quit(code)
299			int code;
300			{
301			exit(code);
302			}