1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: pfilt.c,v 2.33 2018/08/02 18:33:44 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 |
|
15 |
#include "platform.h" |
16 |
#include "standard.h" |
17 |
#include "rtio.h" |
18 |
#include "color.h" |
19 |
#include "view.h" |
20 |
#include "paths.h" |
21 |
#include "pfilt.h" |
22 |
|
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 |
static brightfunc_t rgb_bright; |
88 |
static brightfunc_t xyz_bright; |
89 |
static void copyfile(FILE *in, FILE *out); |
90 |
static void pass1(FILE *in); |
91 |
static void pass2(FILE *in); |
92 |
static void scan2init(void); |
93 |
static void scan2sync(int r); |
94 |
static void scan2flush(void); |
95 |
|
96 |
|
97 |
int |
98 |
main( |
99 |
int argc, |
100 |
char **argv |
101 |
) |
102 |
{ |
103 |
FILE *fin; |
104 |
float *lampcolor; |
105 |
char *lamptype = NULL; |
106 |
long fpos; |
107 |
double outaspect = 0.0; |
108 |
double d; |
109 |
int i, j; |
110 |
SET_DEFAULT_BINARY(); |
111 |
SET_FILE_BINARY(stdin); |
112 |
SET_FILE_BINARY(stdout); |
113 |
if (signal(SIGINT, quit) == SIG_IGN) |
114 |
signal(SIGINT, SIG_IGN); |
115 |
#ifdef SIGHUP |
116 |
if (signal(SIGHUP, quit) == SIG_IGN) |
117 |
signal(SIGHUP, SIG_IGN); |
118 |
#endif |
119 |
signal(SIGTERM, quit); |
120 |
#ifdef SIGPIPE |
121 |
signal(SIGPIPE, quit); |
122 |
#endif |
123 |
#ifdef SIGXCPU |
124 |
signal(SIGXCPU, quit); |
125 |
signal(SIGXFSZ, quit); |
126 |
#endif |
127 |
|
128 |
progname = argv[0] = fixargv0(argv[0]); |
129 |
|
130 |
for (i = 1; i < argc; i++) |
131 |
if (argv[i][0] == '-') |
132 |
switch (argv[i][1]) { |
133 |
case 'x': |
134 |
i++; |
135 |
if (argv[i][0] == '/') { |
136 |
x_c = 1.0/atof(argv[i]+1); |
137 |
ncols = 0; |
138 |
} else |
139 |
ncols = atoi(argv[i]); |
140 |
break; |
141 |
case 'y': |
142 |
i++; |
143 |
if (argv[i][0] == '/') { |
144 |
y_r = 1.0/atof(argv[i]+1); |
145 |
nrows = 0; |
146 |
} else |
147 |
nrows = atoi(argv[i]); |
148 |
break; |
149 |
case 'c': |
150 |
correctaspect = !correctaspect; |
151 |
break; |
152 |
case 'p': |
153 |
i++; |
154 |
outaspect = atof(argv[i]); |
155 |
break; |
156 |
case 'e': |
157 |
if (argv[i+1][0] == '+' || argv[i+1][0] == '-') |
158 |
d = pow(2.0, atof(argv[i+1])); |
159 |
else |
160 |
d = atof(argv[i+1]); |
161 |
if (d < 1e-20 || d > 1e20) { |
162 |
fprintf(stderr, |
163 |
"%s: exposure out of range\n", |
164 |
argv[0]); |
165 |
quit(1); |
166 |
} |
167 |
switch (argv[i][2]) { |
168 |
case '\0': |
169 |
scalecolor(exposure, d); |
170 |
break; |
171 |
case 'r': |
172 |
colval(exposure,RED) *= d; |
173 |
break; |
174 |
case 'g': |
175 |
colval(exposure,GRN) *= d; |
176 |
break; |
177 |
case 'b': |
178 |
colval(exposure,BLU) *= d; |
179 |
break; |
180 |
default: |
181 |
goto badopt; |
182 |
} |
183 |
i++; |
184 |
break; |
185 |
case 'f': |
186 |
lampdat = argv[++i]; |
187 |
break; |
188 |
case 't': |
189 |
lamptype = argv[++i]; |
190 |
break; |
191 |
case '1': |
192 |
singlepass = 1; |
193 |
break; |
194 |
case '2': |
195 |
singlepass = 0; |
196 |
break; |
197 |
case 'n': |
198 |
npts = atoi(argv[++i]) / 2; |
199 |
break; |
200 |
case 's': |
201 |
spread = atof(argv[++i]); |
202 |
break; |
203 |
case 'a': |
204 |
avghot = !avghot; |
205 |
break; |
206 |
case 'h': |
207 |
hotlvl = atof(argv[++i]); |
208 |
break; |
209 |
case 'r': |
210 |
rad = atof(argv[++i]); |
211 |
break; |
212 |
case 'm': |
213 |
thresh = atof(argv[++i]); |
214 |
if (rad <= FTINY) |
215 |
rad = 0.6; |
216 |
break; |
217 |
case 'b': |
218 |
rad = thresh = 0.0; |
219 |
break; |
220 |
default:; |
221 |
badopt: |
222 |
fprintf(stderr, "%s: unknown option: %s\n", |
223 |
progname, argv[i]); |
224 |
quit(1); |
225 |
break; |
226 |
} |
227 |
else |
228 |
break; |
229 |
/* get lamp data (if necessary) */ |
230 |
if (lamptype != NULL) { |
231 |
if (loadlamps(lampdat) < 0) |
232 |
quit(1); |
233 |
if ((lampcolor = matchlamp(lamptype)) == NULL) { |
234 |
fprintf(stderr, "%s: unknown lamp type\n", lamptype); |
235 |
quit(1); |
236 |
} |
237 |
for (j = 0; j < 3; j++) |
238 |
if (lampcolor[j] > 1e-4) |
239 |
colval(exposure,j) /= lampcolor[j]; |
240 |
freelamps(); |
241 |
} |
242 |
/* open input file */ |
243 |
if (i == argc) { |
244 |
if (singlepass) |
245 |
fin = stdin; |
246 |
else { |
247 |
tfname = mktemp(template); |
248 |
if ((fin = fopen(tfname, "w+")) == NULL) { |
249 |
fprintf(stderr, "%s: can't create ", progname); |
250 |
fprintf(stderr, "temp file \"%s\"\n", tfname); |
251 |
quit(1); |
252 |
} |
253 |
copyfile(stdin, fin); |
254 |
if (fseek(fin, 0L, 0) == -1) { |
255 |
fprintf(stderr, "%s: seek fail\n", progname); |
256 |
quit(1); |
257 |
} |
258 |
} |
259 |
} else if (i == argc-1) { |
260 |
if ((fin = fopen(argv[i], "r")) == NULL) { |
261 |
fprintf(stderr, "%s: can't open file \"%s\"\n", |
262 |
progname, argv[i]); |
263 |
quit(1); |
264 |
} |
265 |
} else { |
266 |
fprintf(stderr, "%s: bad # file arguments\n", progname); |
267 |
quit(1); |
268 |
} |
269 |
/* get header */ |
270 |
getheader(fin, headline, NULL); |
271 |
if (wrongformat) { |
272 |
fprintf(stderr, "%s: input must be a Radiance picture\n", |
273 |
progname); |
274 |
quit(1); |
275 |
} |
276 |
/* add new header info. */ |
277 |
printargs(i, argv, stdout); |
278 |
/* get picture size */ |
279 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
280 |
fprintf(stderr, "%s: bad picture size\n", progname); |
281 |
quit(1); |
282 |
} |
283 |
if (!(order & YMAJOR)) |
284 |
inpaspect = 1.0/inpaspect; |
285 |
/* wrap around for cylindrical view? */ |
286 |
wrapfilt = gotview && ourview.type == VT_CYL && |
287 |
ourview.horiz >= 360.-FTINY && order & YMAJOR; |
288 |
/* compute output resolution */ |
289 |
if (ncols <= 0) |
290 |
ncols = x_c*xres + .5; |
291 |
if (nrows <= 0) |
292 |
nrows = y_r*yres + .5; |
293 |
if (outaspect > .01) { |
294 |
d = inpaspect * yres/xres / outaspect; |
295 |
if (d * ncols > nrows) |
296 |
ncols = nrows / d; |
297 |
else |
298 |
nrows = ncols * d; |
299 |
} |
300 |
x_c = (double)ncols/xres; |
301 |
y_r = (double)nrows/yres; |
302 |
|
303 |
if (singlepass) { /* skip exposure, etc. */ |
304 |
pass1default(); |
305 |
pass2(fin); |
306 |
quit(0); |
307 |
} |
308 |
|
309 |
fpos = ftell(fin); /* save input file position */ |
310 |
|
311 |
pass1(fin); |
312 |
|
313 |
if (fseek(fin, fpos, 0) == -1) { |
314 |
fprintf(stderr, "%s: seek fail\n", progname); |
315 |
quit(1); |
316 |
} |
317 |
pass2(fin); |
318 |
|
319 |
quit(estatus); |
320 |
return estatus; /* pro forma return */ |
321 |
} |
322 |
|
323 |
|
324 |
static double |
325 |
rgb_bright( |
326 |
COLOR clr |
327 |
) |
328 |
{ |
329 |
return(bright(clr)); |
330 |
} |
331 |
|
332 |
|
333 |
static double |
334 |
xyz_bright( |
335 |
COLOR clr |
336 |
) |
337 |
{ |
338 |
return(clr[CIEY]); |
339 |
} |
340 |
|
341 |
|
342 |
brightfunc_t *ourbright = rgb_bright; |
343 |
|
344 |
static int |
345 |
headline( /* process line from header */ |
346 |
char *s, |
347 |
void *p |
348 |
) |
349 |
{ |
350 |
char fmt[MAXFMTLEN]; |
351 |
|
352 |
fputs(s, stdout); /* copy to output */ |
353 |
if (isaspect(s)) /* get aspect ratio */ |
354 |
inpaspect *= aspectval(s); |
355 |
else if (isexpos(s)) /* get exposure */ |
356 |
hotlvl *= exposval(s); |
357 |
else if (formatval(fmt, s)) { /* get format */ |
358 |
wrongformat = 0; |
359 |
if (!strcmp(COLRFMT, fmt)) |
360 |
ourbright = rgb_bright; |
361 |
else if (!strcmp(CIEFMT, fmt)) |
362 |
ourbright = xyz_bright; |
363 |
else |
364 |
wrongformat = !globmatch(PICFMT, fmt); |
365 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
366 |
gotview++; |
367 |
return(0); |
368 |
} |
369 |
|
370 |
|
371 |
static void |
372 |
copyfile( /* copy a file */ |
373 |
FILE *in, |
374 |
FILE *out |
375 |
) |
376 |
{ |
377 |
int c; |
378 |
|
379 |
while ((c = getc(in)) != EOF) |
380 |
putc(c, out); |
381 |
|
382 |
if (ferror(out)) { |
383 |
fprintf(stderr, "%s: write error in copyfile\n", progname); |
384 |
quit(1); |
385 |
} |
386 |
} |
387 |
|
388 |
|
389 |
static void |
390 |
pass1( /* first pass of picture file */ |
391 |
FILE *in |
392 |
) |
393 |
{ |
394 |
int i; |
395 |
COLOR *scan; |
396 |
|
397 |
pass1init(); |
398 |
|
399 |
scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
400 |
if (scan == NULL) { |
401 |
fprintf(stderr, "%s: out of memory\n", progname); |
402 |
quit(1); |
403 |
} |
404 |
for (i = 0; i < yres; i++) { |
405 |
if (freadscan(scan, xres, in) < 0) { |
406 |
nrows = (long)nrows * i / yres; /* adjust frame */ |
407 |
if (nrows <= 0) { |
408 |
fprintf(stderr, "%s: empty frame\n", progname); |
409 |
quit(1); |
410 |
} |
411 |
fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
412 |
progname, (int)(100L*i/yres)); |
413 |
yres = i; |
414 |
y_r = (double)nrows/yres; |
415 |
estatus++; |
416 |
break; |
417 |
} |
418 |
pass1scan(scan, i); |
419 |
} |
420 |
free((void *)scan); |
421 |
} |
422 |
|
423 |
|
424 |
static void |
425 |
pass2( /* last pass on file, write to stdout */ |
426 |
FILE *in |
427 |
) |
428 |
{ |
429 |
int yread; |
430 |
int ycent, xcent; |
431 |
int r, c; |
432 |
|
433 |
pass2init(); |
434 |
scan2init(); |
435 |
yread = 0; |
436 |
for (r = 0; r < nrows; r++) { |
437 |
ycent = (r+.5)*yres/nrows; |
438 |
while (yread <= ycent+yrad) { |
439 |
if (yread < yres) { |
440 |
if (freadscan(scanin[yread%barsize], |
441 |
xres, in) < 0) { |
442 |
fprintf(stderr, |
443 |
"%s: truncated input (y=%d)\n", |
444 |
progname, yres-1-yread); |
445 |
quit(1); |
446 |
} |
447 |
pass2scan(scanin[yread%barsize], yread); |
448 |
} |
449 |
yread++; |
450 |
} |
451 |
if (obarsize > 0) |
452 |
scan2sync(r); |
453 |
for (c = 0; c < ncols; c++) { |
454 |
xcent = (c+.5)*xres/ncols; |
455 |
if (thresh > FTINY) |
456 |
dothresh(xcent, ycent, c, r); |
457 |
else if (rad > FTINY) |
458 |
dogauss(scanout[c], xcent, ycent, c, r); |
459 |
else |
460 |
dobox(scanout[c], xcent, ycent, c, r); |
461 |
} |
462 |
if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) { |
463 |
fprintf(stderr, "%s: write error in pass2\n", progname); |
464 |
quit(1); |
465 |
} |
466 |
} |
467 |
/* skip leftover input */ |
468 |
while (yread < yres) { |
469 |
if (freadscan(scanin[0], xres, in) < 0) |
470 |
break; |
471 |
yread++; |
472 |
} |
473 |
scan2flush(); /* flush output */ |
474 |
} |
475 |
|
476 |
|
477 |
static void |
478 |
scan2init(void) /* prepare scanline arrays */ |
479 |
{ |
480 |
COLOR ctmp; |
481 |
double d; |
482 |
int i; |
483 |
|
484 |
xbrad = xres/ncols/2 + 1; |
485 |
ybrad = yres/nrows/2 + 1; |
486 |
if (rad > FTINY) { |
487 |
if (nrows >= yres && ncols >= xres) |
488 |
rad *= (y_r + x_c)/2.0; |
489 |
|
490 |
if (thresh > FTINY) { |
491 |
orad = CHECKRAD*THRESHRAD*rad + 1; |
492 |
xrad = orad/x_c + xbrad; |
493 |
yrad = orad/y_r + ybrad; |
494 |
obarsize = 2*orad + 1; |
495 |
} else { |
496 |
xrad = CHECKRAD*rad/x_c + 1; |
497 |
yrad = CHECKRAD*rad/y_r + 1; |
498 |
} |
499 |
initmask(); /* initialize filter table */ |
500 |
} else { |
501 |
xrad = xbrad; |
502 |
yrad = ybrad; |
503 |
} |
504 |
barsize = 2*yrad + 1; |
505 |
scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
506 |
if (scanin == NULL) |
507 |
goto memerr; |
508 |
for (i = 0; i < barsize; i++) { |
509 |
scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
510 |
if (scanin[i] == NULL) |
511 |
goto memerr; |
512 |
} |
513 |
if (obarsize > 0) { |
514 |
scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *)); |
515 |
greybar = (float **)malloc(obarsize*sizeof(float *)); |
516 |
if ((scoutbar == NULL) | (greybar == NULL)) |
517 |
goto memerr; |
518 |
for (i = 0; i < obarsize; i++) { |
519 |
scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR)); |
520 |
greybar[i] = (float *)malloc(ncols*sizeof(float)); |
521 |
if ((scoutbar[i] == NULL) | (greybar[i] == NULL)) |
522 |
goto memerr; |
523 |
} |
524 |
} else { |
525 |
scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
526 |
if (scanout == NULL) |
527 |
goto memerr; |
528 |
} |
529 |
/* record pixel aspect ratio */ |
530 |
if (!correctaspect) { |
531 |
d = order & YMAJOR ? x_c/y_r : y_r/x_c ; |
532 |
if (!FEQ(d,1.0)) |
533 |
fputaspect(d, stdout); |
534 |
} |
535 |
/* record exposure */ |
536 |
d = (*ourbright)(exposure); |
537 |
if (!FEQ(d,1.0)) |
538 |
fputexpos(d, stdout); |
539 |
/* record color correction */ |
540 |
copycolor(ctmp, exposure); |
541 |
scalecolor(ctmp, 1.0/d); |
542 |
if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) || |
543 |
!FEQ(colval(ctmp,GRN),colval(ctmp,BLU))) |
544 |
fputcolcor(ctmp, stdout); |
545 |
printf("\n"); |
546 |
/* write out resolution */ |
547 |
fputresolu(order, ncols, nrows, stdout); |
548 |
return; |
549 |
memerr: |
550 |
fprintf(stderr, "%s: out of memory\n", progname); |
551 |
quit(1); |
552 |
} |
553 |
|
554 |
|
555 |
static void |
556 |
scan2sync( /* synchronize grey averages and output scan */ |
557 |
int r |
558 |
) |
559 |
{ |
560 |
static int nextrow = 0; |
561 |
COLOR ctmp; |
562 |
int ybot; |
563 |
int c; |
564 |
/* average input scanlines */ |
565 |
while (nextrow <= r+orad && nextrow < nrows) { |
566 |
ybot = (nextrow+.5)*yres/nrows; |
567 |
for (c = 0; c < ncols; c++) { |
568 |
dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow); |
569 |
greybar[nextrow%obarsize][c] = (*ourbright)(ctmp); |
570 |
} |
571 |
/* and zero output scanline */ |
572 |
memset((char *)scoutbar[nextrow%obarsize], '\0', ncols*sizeof(COLOR)); |
573 |
nextrow++; |
574 |
} |
575 |
/* point to top scanline for output */ |
576 |
if (r-orad >= 0) |
577 |
scanout = scoutbar[(r-orad)%obarsize]; |
578 |
else |
579 |
scanout = NULL; |
580 |
} |
581 |
|
582 |
|
583 |
static void |
584 |
scan2flush(void) /* flush output buffer */ |
585 |
{ |
586 |
int r; |
587 |
|
588 |
for (r = nrows-orad; r < nrows; r++) |
589 |
if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0) |
590 |
break; |
591 |
if (fflush(stdout) < 0) { |
592 |
fprintf(stderr, "%s: write error at end of pass2\n", progname); |
593 |
quit(1); |
594 |
} |
595 |
} |
596 |
|
597 |
|
598 |
void |
599 |
quit(code) /* remove temporary file and exit */ |
600 |
int code; |
601 |
{ |
602 |
if (tfname != NULL) |
603 |
unlink(tfname); |
604 |
exit(code); |
605 |
} |