1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: pfilt.c,v 2.27 2003/10/22 02:06:35 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* pfilt.c - program to post-process picture file. |
6 |
* |
7 |
* 9/26/85 |
8 |
* 6/23/93 Added additional buffers for value spreading |
9 |
*/ |
10 |
|
11 |
#include "copyright.h" |
12 |
|
13 |
#include <signal.h> |
14 |
#include <string.h> |
15 |
|
16 |
#include "platform.h" |
17 |
#include "standard.h" |
18 |
#include "color.h" |
19 |
#include "view.h" |
20 |
#include "paths.h" |
21 |
|
22 |
extern float *matchlamp(); |
23 |
|
24 |
#define FEQ(a,b) ((a) >= .98*(b) && (a) <= 1.02*(b)) |
25 |
|
26 |
double CHECKRAD = 2.0; /* radius to check for filtering */ |
27 |
|
28 |
#define THRESHRAD 5.0 /* maximum sample spread in output */ |
29 |
|
30 |
COLOR exposure = WHTCOLOR; /* exposure for the frame */ |
31 |
|
32 |
double rad = 0.0; /* output pixel radius for filtering */ |
33 |
|
34 |
double thresh = 0.0; /* maximum contribution for subpixel */ |
35 |
|
36 |
int nrows = 0; /* number of rows for output */ |
37 |
int ncols = 0; /* number of columns for output */ |
38 |
|
39 |
double x_c = 1.0; /* ratio of output x size to input */ |
40 |
double y_r = 1.0; /* ratio of output y size to input */ |
41 |
|
42 |
int singlepass = 0; /* true means skip first pass */ |
43 |
|
44 |
int avghot = 0; /* true means average in bright spots */ |
45 |
|
46 |
double hotlvl = 100.0; /* level considered "hot" */ |
47 |
|
48 |
int npts = 0; /* (half) number of points for stars */ |
49 |
|
50 |
double spread = 1e-4; /* spread for star points */ |
51 |
|
52 |
char *tfname = NULL; |
53 |
|
54 |
char template[] = TEMPLATE; |
55 |
|
56 |
char *lampdat = "lamp.tab"; /* lamp data file */ |
57 |
|
58 |
int order; /* scanline ordering of input */ |
59 |
int xres, yres; /* resolution of input */ |
60 |
double inpaspect = 1.0; /* pixel aspect ratio of input */ |
61 |
int correctaspect = 0; /* aspect ratio correction? */ |
62 |
|
63 |
int wrongformat = 0; |
64 |
|
65 |
VIEW ourview = STDVIEW; |
66 |
int gotview = 0; |
67 |
int wrapfilt = 0; /* wrap filter horizontally? */ |
68 |
|
69 |
int estatus = 0; /* exit status (for non-fatal errors) */ |
70 |
|
71 |
int xrad; /* x search radius */ |
72 |
int yrad; /* y search radius */ |
73 |
int xbrad; /* x box size */ |
74 |
int ybrad; /* y box size */ |
75 |
|
76 |
int barsize; /* size of input scan bar */ |
77 |
COLOR **scanin; /* input scan bar */ |
78 |
COLOR *scanout; /* output scan line */ |
79 |
COLOR **scoutbar; /* output scan bar (if thresh > 0) */ |
80 |
float **greybar; /* grey-averaged input values */ |
81 |
int obarsize = 0; /* size of output scan bar */ |
82 |
int orad = 0; /* output window radius */ |
83 |
|
84 |
char *progname; |
85 |
|
86 |
static gethfunc headline; |
87 |
|
88 |
|
89 |
main(argc, argv) |
90 |
int argc; |
91 |
char **argv; |
92 |
{ |
93 |
FILE *fin; |
94 |
float *lampcolor; |
95 |
char *lamptype = NULL; |
96 |
long fpos; |
97 |
double outaspect = 0.0; |
98 |
double d; |
99 |
int i, j; |
100 |
SET_DEFAULT_BINARY(); |
101 |
SET_FILE_BINARY(stdin); |
102 |
SET_FILE_BINARY(stdout); |
103 |
if (signal(SIGINT, quit) == SIG_IGN) |
104 |
signal(SIGINT, SIG_IGN); |
105 |
#ifdef SIGHUP |
106 |
if (signal(SIGHUP, quit) == SIG_IGN) |
107 |
signal(SIGHUP, SIG_IGN); |
108 |
#endif |
109 |
signal(SIGTERM, quit); |
110 |
#ifdef SIGPIPE |
111 |
signal(SIGPIPE, quit); |
112 |
#endif |
113 |
#ifdef SIGXCPU |
114 |
signal(SIGXCPU, quit); |
115 |
signal(SIGXFSZ, quit); |
116 |
#endif |
117 |
|
118 |
progname = argv[0] = fixargv0(argv[0]); |
119 |
|
120 |
for (i = 1; i < argc; i++) |
121 |
if (argv[i][0] == '-') |
122 |
switch (argv[i][1]) { |
123 |
case 'x': |
124 |
i++; |
125 |
if (argv[i][0] == '/') { |
126 |
x_c = 1.0/atof(argv[i]+1); |
127 |
ncols = 0; |
128 |
} else |
129 |
ncols = atoi(argv[i]); |
130 |
break; |
131 |
case 'y': |
132 |
i++; |
133 |
if (argv[i][0] == '/') { |
134 |
y_r = 1.0/atof(argv[i]+1); |
135 |
nrows = 0; |
136 |
} else |
137 |
nrows = atoi(argv[i]); |
138 |
break; |
139 |
case 'c': |
140 |
correctaspect = !correctaspect; |
141 |
break; |
142 |
case 'p': |
143 |
i++; |
144 |
outaspect = atof(argv[i]); |
145 |
break; |
146 |
case 'e': |
147 |
if (argv[i+1][0] == '+' || argv[i+1][0] == '-') |
148 |
d = pow(2.0, atof(argv[i+1])); |
149 |
else |
150 |
d = atof(argv[i+1]); |
151 |
if (d < 1e-20 || d > 1e20) { |
152 |
fprintf(stderr, |
153 |
"%s: exposure out of range\n", |
154 |
argv[0]); |
155 |
quit(1); |
156 |
} |
157 |
switch (argv[i][2]) { |
158 |
case '\0': |
159 |
scalecolor(exposure, d); |
160 |
break; |
161 |
case 'r': |
162 |
colval(exposure,RED) *= d; |
163 |
break; |
164 |
case 'g': |
165 |
colval(exposure,GRN) *= d; |
166 |
break; |
167 |
case 'b': |
168 |
colval(exposure,BLU) *= d; |
169 |
break; |
170 |
default: |
171 |
goto badopt; |
172 |
} |
173 |
i++; |
174 |
break; |
175 |
case 'f': |
176 |
lampdat = argv[++i]; |
177 |
break; |
178 |
case 't': |
179 |
lamptype = argv[++i]; |
180 |
break; |
181 |
case '1': |
182 |
singlepass = 1; |
183 |
break; |
184 |
case '2': |
185 |
singlepass = 0; |
186 |
break; |
187 |
case 'n': |
188 |
npts = atoi(argv[++i]) / 2; |
189 |
break; |
190 |
case 's': |
191 |
spread = atof(argv[++i]); |
192 |
break; |
193 |
case 'a': |
194 |
avghot = !avghot; |
195 |
break; |
196 |
case 'h': |
197 |
hotlvl = atof(argv[++i]); |
198 |
break; |
199 |
case 'r': |
200 |
rad = atof(argv[++i]); |
201 |
break; |
202 |
case 'm': |
203 |
thresh = atof(argv[++i]); |
204 |
if (rad <= FTINY) |
205 |
rad = 0.6; |
206 |
break; |
207 |
case 'b': |
208 |
rad = thresh = 0.0; |
209 |
break; |
210 |
default:; |
211 |
badopt: |
212 |
fprintf(stderr, "%s: unknown option: %s\n", |
213 |
progname, argv[i]); |
214 |
quit(1); |
215 |
break; |
216 |
} |
217 |
else |
218 |
break; |
219 |
/* get lamp data (if necessary) */ |
220 |
if (lamptype != NULL) { |
221 |
if (loadlamps(lampdat) < 0) |
222 |
quit(1); |
223 |
if ((lampcolor = matchlamp(lamptype)) == NULL) { |
224 |
fprintf(stderr, "%s: unknown lamp type\n", lamptype); |
225 |
quit(1); |
226 |
} |
227 |
for (j = 0; j < 3; j++) |
228 |
if (lampcolor[j] > 1e-4) |
229 |
colval(exposure,j) /= lampcolor[j]; |
230 |
freelamps(); |
231 |
} |
232 |
/* open input file */ |
233 |
if (i == argc) { |
234 |
if (singlepass) |
235 |
fin = stdin; |
236 |
else { |
237 |
tfname = mktemp(template); |
238 |
if ((fin = fopen(tfname, "w+")) == NULL) { |
239 |
fprintf(stderr, "%s: can't create ", progname); |
240 |
fprintf(stderr, "temp file \"%s\"\n", tfname); |
241 |
quit(1); |
242 |
} |
243 |
copyfile(stdin, fin); |
244 |
if (fseek(fin, 0L, 0) == -1) { |
245 |
fprintf(stderr, "%s: seek fail\n", progname); |
246 |
quit(1); |
247 |
} |
248 |
} |
249 |
} else if (i == argc-1) { |
250 |
if ((fin = fopen(argv[i], "r")) == NULL) { |
251 |
fprintf(stderr, "%s: can't open file \"%s\"\n", |
252 |
progname, argv[i]); |
253 |
quit(1); |
254 |
} |
255 |
} else { |
256 |
fprintf(stderr, "%s: bad # file arguments\n", progname); |
257 |
quit(1); |
258 |
} |
259 |
/* get header */ |
260 |
getheader(fin, headline, NULL); |
261 |
if (wrongformat) { |
262 |
fprintf(stderr, "%s: input must be a Radiance picture\n", |
263 |
progname); |
264 |
quit(1); |
265 |
} |
266 |
/* add new header info. */ |
267 |
printargs(i, argv, stdout); |
268 |
/* get picture size */ |
269 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
270 |
fprintf(stderr, "%s: bad picture size\n", progname); |
271 |
quit(1); |
272 |
} |
273 |
if (!(order & YMAJOR)) |
274 |
inpaspect = 1.0/inpaspect; |
275 |
/* wrap around for cylindrical view? */ |
276 |
wrapfilt = gotview && ourview.type == VT_CYL && |
277 |
ourview.horiz >= 360.-FTINY && order & YMAJOR; |
278 |
/* compute output resolution */ |
279 |
if (ncols <= 0) |
280 |
ncols = x_c*xres + .5; |
281 |
if (nrows <= 0) |
282 |
nrows = y_r*yres + .5; |
283 |
if (outaspect > .01) { |
284 |
d = inpaspect * yres/xres / outaspect; |
285 |
if (d * ncols > nrows) |
286 |
ncols = nrows / d; |
287 |
else |
288 |
nrows = ncols * d; |
289 |
} |
290 |
x_c = (double)ncols/xres; |
291 |
y_r = (double)nrows/yres; |
292 |
|
293 |
if (singlepass) { /* skip exposure, etc. */ |
294 |
pass1default(); |
295 |
pass2(fin); |
296 |
quit(0); |
297 |
} |
298 |
|
299 |
fpos = ftell(fin); /* save input file position */ |
300 |
|
301 |
pass1(fin); |
302 |
|
303 |
if (fseek(fin, fpos, 0) == -1) { |
304 |
fprintf(stderr, "%s: seek fail\n", progname); |
305 |
quit(1); |
306 |
} |
307 |
pass2(fin); |
308 |
|
309 |
quit(estatus); |
310 |
} |
311 |
|
312 |
|
313 |
double |
314 |
rgb_bright(clr) |
315 |
COLOR clr; |
316 |
{ |
317 |
return(bright(clr)); |
318 |
} |
319 |
|
320 |
|
321 |
double |
322 |
xyz_bright(clr) |
323 |
COLOR clr; |
324 |
{ |
325 |
return(clr[CIEY]); |
326 |
} |
327 |
|
328 |
|
329 |
double (*ourbright)() = rgb_bright; |
330 |
|
331 |
|
332 |
static int |
333 |
headline( /* process line from header */ |
334 |
char *s, |
335 |
void *p |
336 |
) |
337 |
{ |
338 |
char fmt[32]; |
339 |
|
340 |
fputs(s, stdout); /* copy to output */ |
341 |
if (isaspect(s)) /* get aspect ratio */ |
342 |
inpaspect *= aspectval(s); |
343 |
else if (isexpos(s)) /* get exposure */ |
344 |
hotlvl *= exposval(s); |
345 |
else if (formatval(fmt, s)) { /* get format */ |
346 |
wrongformat = 0; |
347 |
if (!strcmp(COLRFMT, fmt)) |
348 |
ourbright = rgb_bright; |
349 |
else if (!strcmp(CIEFMT, fmt)) |
350 |
ourbright = xyz_bright; |
351 |
else |
352 |
wrongformat = !globmatch(PICFMT, fmt); |
353 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
354 |
gotview++; |
355 |
return(0); |
356 |
} |
357 |
|
358 |
|
359 |
copyfile(in, out) /* copy a file */ |
360 |
register FILE *in, *out; |
361 |
{ |
362 |
register int c; |
363 |
|
364 |
while ((c = getc(in)) != EOF) |
365 |
putc(c, out); |
366 |
|
367 |
if (ferror(out)) { |
368 |
fprintf(stderr, "%s: write error in copyfile\n", progname); |
369 |
quit(1); |
370 |
} |
371 |
} |
372 |
|
373 |
|
374 |
pass1(in) /* first pass of picture file */ |
375 |
FILE *in; |
376 |
{ |
377 |
int i; |
378 |
COLOR *scan; |
379 |
|
380 |
pass1init(); |
381 |
|
382 |
scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
383 |
if (scan == NULL) { |
384 |
fprintf(stderr, "%s: out of memory\n", progname); |
385 |
quit(1); |
386 |
} |
387 |
for (i = 0; i < yres; i++) { |
388 |
if (freadscan(scan, xres, in) < 0) { |
389 |
nrows = (long)nrows * i / yres; /* adjust frame */ |
390 |
if (nrows <= 0) { |
391 |
fprintf(stderr, "%s: empty frame\n", progname); |
392 |
quit(1); |
393 |
} |
394 |
fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
395 |
progname, (int)(100L*i/yres)); |
396 |
yres = i; |
397 |
y_r = (double)nrows/yres; |
398 |
estatus++; |
399 |
break; |
400 |
} |
401 |
pass1scan(scan, i); |
402 |
} |
403 |
free((void *)scan); |
404 |
} |
405 |
|
406 |
|
407 |
pass2(in) /* last pass on file, write to stdout */ |
408 |
FILE *in; |
409 |
{ |
410 |
int yread; |
411 |
int ycent, xcent; |
412 |
int r, c; |
413 |
|
414 |
pass2init(); |
415 |
scan2init(); |
416 |
yread = 0; |
417 |
for (r = 0; r < nrows; r++) { |
418 |
ycent = (r+.5)*yres/nrows; |
419 |
while (yread <= ycent+yrad) { |
420 |
if (yread < yres) { |
421 |
if (freadscan(scanin[yread%barsize], |
422 |
xres, in) < 0) { |
423 |
fprintf(stderr, |
424 |
"%s: truncated input (y=%d)\n", |
425 |
progname, yres-1-yread); |
426 |
quit(1); |
427 |
} |
428 |
pass2scan(scanin[yread%barsize], yread); |
429 |
} |
430 |
yread++; |
431 |
} |
432 |
if (obarsize > 0) |
433 |
scan2sync(r); |
434 |
for (c = 0; c < ncols; c++) { |
435 |
xcent = (c+.5)*xres/ncols; |
436 |
if (thresh > FTINY) |
437 |
dothresh(xcent, ycent, c, r); |
438 |
else if (rad > FTINY) |
439 |
dogauss(scanout[c], xcent, ycent, c, r); |
440 |
else |
441 |
dobox(scanout[c], xcent, ycent, c, r); |
442 |
} |
443 |
if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) { |
444 |
fprintf(stderr, "%s: write error in pass2\n", progname); |
445 |
quit(1); |
446 |
} |
447 |
} |
448 |
/* skip leftover input */ |
449 |
while (yread < yres) { |
450 |
if (freadscan(scanin[0], xres, in) < 0) |
451 |
break; |
452 |
yread++; |
453 |
} |
454 |
scan2flush(); /* flush output */ |
455 |
} |
456 |
|
457 |
|
458 |
scan2init() /* prepare scanline arrays */ |
459 |
{ |
460 |
COLOR ctmp; |
461 |
double d; |
462 |
register int i; |
463 |
|
464 |
xbrad = xres/ncols/2 + 1; |
465 |
ybrad = yres/nrows/2 + 1; |
466 |
if (rad > FTINY) { |
467 |
if (nrows >= yres && ncols >= xres) |
468 |
rad *= (y_r + x_c)/2.0; |
469 |
|
470 |
if (thresh > FTINY) { |
471 |
orad = CHECKRAD*THRESHRAD*rad + 1; |
472 |
xrad = orad/x_c + xbrad; |
473 |
yrad = orad/y_r + ybrad; |
474 |
obarsize = 2*orad + 1; |
475 |
} else { |
476 |
xrad = CHECKRAD*rad/x_c + 1; |
477 |
yrad = CHECKRAD*rad/y_r + 1; |
478 |
} |
479 |
initmask(); /* initialize filter table */ |
480 |
} else { |
481 |
xrad = xbrad; |
482 |
yrad = ybrad; |
483 |
} |
484 |
barsize = 2*yrad + 1; |
485 |
scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
486 |
if (scanin == NULL) |
487 |
goto memerr; |
488 |
for (i = 0; i < barsize; i++) { |
489 |
scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
490 |
if (scanin[i] == NULL) |
491 |
goto memerr; |
492 |
} |
493 |
if (obarsize > 0) { |
494 |
scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *)); |
495 |
greybar = (float **)malloc(obarsize*sizeof(float *)); |
496 |
if ((scoutbar == NULL) | (greybar == NULL)) |
497 |
goto memerr; |
498 |
for (i = 0; i < obarsize; i++) { |
499 |
scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR)); |
500 |
greybar[i] = (float *)malloc(ncols*sizeof(float)); |
501 |
if ((scoutbar[i] == NULL) | (greybar[i] == NULL)) |
502 |
goto memerr; |
503 |
} |
504 |
} else { |
505 |
scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
506 |
if (scanout == NULL) |
507 |
goto memerr; |
508 |
} |
509 |
/* record pixel aspect ratio */ |
510 |
if (!correctaspect) { |
511 |
d = order & YMAJOR ? x_c/y_r : y_r/x_c ; |
512 |
if (!FEQ(d,1.0)) |
513 |
fputaspect(d, stdout); |
514 |
} |
515 |
/* record exposure */ |
516 |
d = (*ourbright)(exposure); |
517 |
if (!FEQ(d,1.0)) |
518 |
fputexpos(d, stdout); |
519 |
/* record color correction */ |
520 |
copycolor(ctmp, exposure); |
521 |
scalecolor(ctmp, 1.0/d); |
522 |
if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) || |
523 |
!FEQ(colval(ctmp,GRN),colval(ctmp,BLU))) |
524 |
fputcolcor(ctmp, stdout); |
525 |
printf("\n"); |
526 |
/* write out resolution */ |
527 |
fputresolu(order, ncols, nrows, stdout); |
528 |
return; |
529 |
memerr: |
530 |
fprintf(stderr, "%s: out of memory\n", progname); |
531 |
quit(1); |
532 |
} |
533 |
|
534 |
|
535 |
scan2sync(r) /* synchronize grey averages and output scan */ |
536 |
int r; |
537 |
{ |
538 |
static int nextrow = 0; |
539 |
COLOR ctmp; |
540 |
int ybot; |
541 |
register int c; |
542 |
/* average input scanlines */ |
543 |
while (nextrow <= r+orad && nextrow < nrows) { |
544 |
ybot = (nextrow+.5)*yres/nrows; |
545 |
for (c = 0; c < ncols; c++) { |
546 |
dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow); |
547 |
greybar[nextrow%obarsize][c] = (*ourbright)(ctmp); |
548 |
} |
549 |
/* and zero output scanline */ |
550 |
memset((char *)scoutbar[nextrow%obarsize], '\0', ncols*sizeof(COLOR)); |
551 |
nextrow++; |
552 |
} |
553 |
/* point to top scanline for output */ |
554 |
if (r-orad >= 0) |
555 |
scanout = scoutbar[(r-orad)%obarsize]; |
556 |
else |
557 |
scanout = NULL; |
558 |
} |
559 |
|
560 |
|
561 |
scan2flush() /* flush output buffer */ |
562 |
{ |
563 |
register int r; |
564 |
|
565 |
for (r = nrows-orad; r < nrows; r++) |
566 |
if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0) |
567 |
break; |
568 |
if (fflush(stdout) < 0) { |
569 |
fprintf(stderr, "%s: write error at end of pass2\n", progname); |
570 |
quit(1); |
571 |
} |
572 |
} |
573 |
|
574 |
|
575 |
void |
576 |
quit(code) /* remove temporary file and exit */ |
577 |
int code; |
578 |
{ |
579 |
if (tfname != NULL) |
580 |
unlink(tfname); |
581 |
exit(code); |
582 |
} |