1 |
/* Copyright (c) 1991 Regents of the University of California */ |
2 |
|
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 |
#define MAXINP 32 /* maximum number of input files */ |
22 |
|
23 |
struct { |
24 |
char *name; /* file name */ |
25 |
FILE *fp; /* stream pointer */ |
26 |
COLOR *scan; /* input scanline */ |
27 |
COLOR coef; /* coefficient */ |
28 |
} 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 |
#define vbrtin "li" |
35 |
#define vbrtout "lo" |
36 |
|
37 |
#define vnfiles "nfiles" |
38 |
#define vxres "xres" |
39 |
#define vyres "yres" |
40 |
#define vxpos "x" |
41 |
#define vypos "y" |
42 |
|
43 |
int nowarn = 0; /* no warning messages? */ |
44 |
|
45 |
int original = 0; /* origninal values? */ |
46 |
|
47 |
int xres=0, yres=0; /* picture resolution */ |
48 |
|
49 |
int xpos, ypos; /* picture position */ |
50 |
|
51 |
int wrongformat = 0; |
52 |
|
53 |
|
54 |
tputs(s) /* put out string preceded by a tab */ |
55 |
char *s; |
56 |
{ |
57 |
char fmt[32]; |
58 |
double d; |
59 |
COLOR ctmp; |
60 |
|
61 |
if (isformat(s)) { /* check format */ |
62 |
formatval(fmt, s); |
63 |
wrongformat = strcmp(fmt, COLRFMT); |
64 |
} else if (original && isexpos(s)) { /* exposure */ |
65 |
d = 1.0/exposval(s); |
66 |
scalecolor(input[nfiles].coef, d); |
67 |
} else if (original && iscolcor(s)) { /* color correction */ |
68 |
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 |
} else { /* echo unaffected line */ |
73 |
putchar('\t'); |
74 |
fputs(s, stdout); |
75 |
} |
76 |
|
77 |
} |
78 |
|
79 |
|
80 |
main(argc, argv) |
81 |
int argc; |
82 |
char *argv[]; |
83 |
{ |
84 |
extern double l_redin(), l_grnin(), l_bluin(), l_brtin(), atof(); |
85 |
double f; |
86 |
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 |
funset(vbrtin, 1, l_brtin); |
92 |
|
93 |
for (a = 1; a < argc; a++) |
94 |
if (argv[a][0] == '-') |
95 |
switch (argv[a][1]) { |
96 |
case '\0': |
97 |
case 's': |
98 |
case 'c': |
99 |
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 |
case 'o': |
110 |
original = !original; |
111 |
break; |
112 |
case 'f': |
113 |
fcompile(argv[++a]); |
114 |
break; |
115 |
case 'e': |
116 |
scompile(argv[++a], NULL, 0); |
117 |
break; |
118 |
default: |
119 |
goto usage; |
120 |
} |
121 |
else |
122 |
break; |
123 |
getfiles: |
124 |
for (nfiles = 0; nfiles < MAXINP; nfiles++) |
125 |
setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
126 |
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 |
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 |
input[nfiles].name = argv[a]; |
153 |
input[nfiles].fp = fopen(argv[a], "r"); |
154 |
if (input[nfiles].fp == NULL) { |
155 |
perror(argv[a]); |
156 |
quit(1); |
157 |
} |
158 |
} |
159 |
fputs(input[nfiles].name, stdout); |
160 |
fputs(":\n", stdout); |
161 |
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 |
if (fgetresolu(&xpos, &ypos, input[nfiles].fp) != |
168 |
(YMAJOR|YDECR)) { |
169 |
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(xres*sizeof(COLOR)); |
182 |
nfiles++; |
183 |
} |
184 |
printargs(argc, argv, stdout); |
185 |
fputformat(COLRFMT, stdout); |
186 |
putchar('\n'); |
187 |
fputresolu(YMAJOR|YDECR, xres, yres, stdout); |
188 |
combine(); |
189 |
quit(0); |
190 |
usage: |
191 |
eputs("Usage: "); |
192 |
eputs(argv[0]); |
193 |
eputs( |
194 |
" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n"); |
195 |
quit(1); |
196 |
} |
197 |
|
198 |
|
199 |
combine() /* combine pictures */ |
200 |
{ |
201 |
EPNODE *coldef[3], *brtdef; |
202 |
COLOR *scanout; |
203 |
double d; |
204 |
register int i, j; |
205 |
/* check defined variables */ |
206 |
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 |
if (vardefined(vbrtout)) |
213 |
brtdef = eparse(vbrtout); |
214 |
else |
215 |
brtdef = NULL; |
216 |
/* predefine variables */ |
217 |
varset(vnfiles, '=', (double)nfiles); |
218 |
varset(vxres, '=', (double)xres); |
219 |
varset(vyres, '=', (double)yres); |
220 |
/* allocate scanline */ |
221 |
scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
222 |
/* combine files */ |
223 |
for (ypos = yres-1; ypos >= 0; ypos--) { |
224 |
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 |
varset(vypos, '=', (double)ypos); |
231 |
for (xpos = 0; xpos < xres; xpos++) { |
232 |
for (i = 0; i < nfiles; i++) |
233 |
multcolor(input[i].scan[xpos],input[i].coef); |
234 |
varset(vxpos, '=', (double)xpos); |
235 |
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 |
} |
251 |
if (colval(scanout[xpos],j) < 0.0) |
252 |
colval(scanout[xpos],j) = 0.0; |
253 |
} |
254 |
} |
255 |
} |
256 |
if (fwritescan(scanout, xres, stdout) < 0) { |
257 |
perror("write error"); |
258 |
quit(1); |
259 |
} |
260 |
} |
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 |
} |
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 |
} |
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 |
} |