1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: pfilt.c,v 2.29 2004/03/28 20:33:14 schorsch 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 "rtio.h" |
19 |
#include "color.h" |
20 |
#include "view.h" |
21 |
#include "paths.h" |
22 |
#include "pfilt.h" |
23 |
|
24 |
|
25 |
#define FEQ(a,b) ((a) >= .98*(b) && (a) <= 1.02*(b)) |
26 |
|
27 |
double CHECKRAD = 2.0; /* radius to check for filtering */ |
28 |
|
29 |
#define THRESHRAD 5.0 /* maximum sample spread in output */ |
30 |
|
31 |
COLOR exposure = WHTCOLOR; /* exposure for the frame */ |
32 |
|
33 |
double rad = 0.0; /* output pixel radius for filtering */ |
34 |
|
35 |
double thresh = 0.0; /* maximum contribution for subpixel */ |
36 |
|
37 |
int nrows = 0; /* number of rows for output */ |
38 |
int ncols = 0; /* number of columns for output */ |
39 |
|
40 |
double x_c = 1.0; /* ratio of output x size to input */ |
41 |
double y_r = 1.0; /* ratio of output y size to input */ |
42 |
|
43 |
int singlepass = 0; /* true means skip first pass */ |
44 |
|
45 |
int avghot = 0; /* true means average in bright spots */ |
46 |
|
47 |
double hotlvl = 100.0; /* level considered "hot" */ |
48 |
|
49 |
int npts = 0; /* (half) number of points for stars */ |
50 |
|
51 |
double spread = 1e-4; /* spread for star points */ |
52 |
|
53 |
char *tfname = NULL; |
54 |
|
55 |
char template[] = TEMPLATE; |
56 |
|
57 |
char *lampdat = "lamp.tab"; /* lamp data file */ |
58 |
|
59 |
int order; /* scanline ordering of input */ |
60 |
int xres, yres; /* resolution of input */ |
61 |
double inpaspect = 1.0; /* pixel aspect ratio of input */ |
62 |
int correctaspect = 0; /* aspect ratio correction? */ |
63 |
|
64 |
int wrongformat = 0; |
65 |
|
66 |
VIEW ourview = STDVIEW; |
67 |
int gotview = 0; |
68 |
int wrapfilt = 0; /* wrap filter horizontally? */ |
69 |
|
70 |
int estatus = 0; /* exit status (for non-fatal errors) */ |
71 |
|
72 |
int xrad; /* x search radius */ |
73 |
int yrad; /* y search radius */ |
74 |
int xbrad; /* x box size */ |
75 |
int ybrad; /* y box size */ |
76 |
|
77 |
int barsize; /* size of input scan bar */ |
78 |
COLOR **scanin; /* input scan bar */ |
79 |
COLOR *scanout; /* output scan line */ |
80 |
COLOR **scoutbar; /* output scan bar (if thresh > 0) */ |
81 |
float **greybar; /* grey-averaged input values */ |
82 |
int obarsize = 0; /* size of output scan bar */ |
83 |
int orad = 0; /* output window radius */ |
84 |
|
85 |
char *progname; |
86 |
|
87 |
static gethfunc headline; |
88 |
static brightfunc_t rgb_bright; |
89 |
static brightfunc_t xyz_bright; |
90 |
//static double rgb_bright(COLOR clr); |
91 |
//static double xyz_bright(COLOR clr); |
92 |
static void copyfile(FILE *in, FILE *out); |
93 |
static void pass1(FILE *in); |
94 |
static void pass2(FILE *in); |
95 |
static void scan2init(void); |
96 |
static void scan2sync(int r); |
97 |
static void scan2flush(void); |
98 |
|
99 |
|
100 |
int |
101 |
main( |
102 |
int argc, |
103 |
char **argv |
104 |
) |
105 |
{ |
106 |
FILE *fin; |
107 |
float *lampcolor; |
108 |
char *lamptype = NULL; |
109 |
long fpos; |
110 |
double outaspect = 0.0; |
111 |
double d; |
112 |
int i, j; |
113 |
SET_DEFAULT_BINARY(); |
114 |
SET_FILE_BINARY(stdin); |
115 |
SET_FILE_BINARY(stdout); |
116 |
if (signal(SIGINT, quit) == SIG_IGN) |
117 |
signal(SIGINT, SIG_IGN); |
118 |
#ifdef SIGHUP |
119 |
if (signal(SIGHUP, quit) == SIG_IGN) |
120 |
signal(SIGHUP, SIG_IGN); |
121 |
#endif |
122 |
signal(SIGTERM, quit); |
123 |
#ifdef SIGPIPE |
124 |
signal(SIGPIPE, quit); |
125 |
#endif |
126 |
#ifdef SIGXCPU |
127 |
signal(SIGXCPU, quit); |
128 |
signal(SIGXFSZ, quit); |
129 |
#endif |
130 |
|
131 |
progname = argv[0] = fixargv0(argv[0]); |
132 |
|
133 |
for (i = 1; i < argc; i++) |
134 |
if (argv[i][0] == '-') |
135 |
switch (argv[i][1]) { |
136 |
case 'x': |
137 |
i++; |
138 |
if (argv[i][0] == '/') { |
139 |
x_c = 1.0/atof(argv[i]+1); |
140 |
ncols = 0; |
141 |
} else |
142 |
ncols = atoi(argv[i]); |
143 |
break; |
144 |
case 'y': |
145 |
i++; |
146 |
if (argv[i][0] == '/') { |
147 |
y_r = 1.0/atof(argv[i]+1); |
148 |
nrows = 0; |
149 |
} else |
150 |
nrows = atoi(argv[i]); |
151 |
break; |
152 |
case 'c': |
153 |
correctaspect = !correctaspect; |
154 |
break; |
155 |
case 'p': |
156 |
i++; |
157 |
outaspect = atof(argv[i]); |
158 |
break; |
159 |
case 'e': |
160 |
if (argv[i+1][0] == '+' || argv[i+1][0] == '-') |
161 |
d = pow(2.0, atof(argv[i+1])); |
162 |
else |
163 |
d = atof(argv[i+1]); |
164 |
if (d < 1e-20 || d > 1e20) { |
165 |
fprintf(stderr, |
166 |
"%s: exposure out of range\n", |
167 |
argv[0]); |
168 |
quit(1); |
169 |
} |
170 |
switch (argv[i][2]) { |
171 |
case '\0': |
172 |
scalecolor(exposure, d); |
173 |
break; |
174 |
case 'r': |
175 |
colval(exposure,RED) *= d; |
176 |
break; |
177 |
case 'g': |
178 |
colval(exposure,GRN) *= d; |
179 |
break; |
180 |
case 'b': |
181 |
colval(exposure,BLU) *= d; |
182 |
break; |
183 |
default: |
184 |
goto badopt; |
185 |
} |
186 |
i++; |
187 |
break; |
188 |
case 'f': |
189 |
lampdat = argv[++i]; |
190 |
break; |
191 |
case 't': |
192 |
lamptype = argv[++i]; |
193 |
break; |
194 |
case '1': |
195 |
singlepass = 1; |
196 |
break; |
197 |
case '2': |
198 |
singlepass = 0; |
199 |
break; |
200 |
case 'n': |
201 |
npts = atoi(argv[++i]) / 2; |
202 |
break; |
203 |
case 's': |
204 |
spread = atof(argv[++i]); |
205 |
break; |
206 |
case 'a': |
207 |
avghot = !avghot; |
208 |
break; |
209 |
case 'h': |
210 |
hotlvl = atof(argv[++i]); |
211 |
break; |
212 |
case 'r': |
213 |
rad = atof(argv[++i]); |
214 |
break; |
215 |
case 'm': |
216 |
thresh = atof(argv[++i]); |
217 |
if (rad <= FTINY) |
218 |
rad = 0.6; |
219 |
break; |
220 |
case 'b': |
221 |
rad = thresh = 0.0; |
222 |
break; |
223 |
default:; |
224 |
badopt: |
225 |
fprintf(stderr, "%s: unknown option: %s\n", |
226 |
progname, argv[i]); |
227 |
quit(1); |
228 |
break; |
229 |
} |
230 |
else |
231 |
break; |
232 |
/* get lamp data (if necessary) */ |
233 |
if (lamptype != NULL) { |
234 |
if (loadlamps(lampdat) < 0) |
235 |
quit(1); |
236 |
if ((lampcolor = matchlamp(lamptype)) == NULL) { |
237 |
fprintf(stderr, "%s: unknown lamp type\n", lamptype); |
238 |
quit(1); |
239 |
} |
240 |
for (j = 0; j < 3; j++) |
241 |
if (lampcolor[j] > 1e-4) |
242 |
colval(exposure,j) /= lampcolor[j]; |
243 |
freelamps(); |
244 |
} |
245 |
/* open input file */ |
246 |
if (i == argc) { |
247 |
if (singlepass) |
248 |
fin = stdin; |
249 |
else { |
250 |
tfname = mktemp(template); |
251 |
if ((fin = fopen(tfname, "w+")) == NULL) { |
252 |
fprintf(stderr, "%s: can't create ", progname); |
253 |
fprintf(stderr, "temp file \"%s\"\n", tfname); |
254 |
quit(1); |
255 |
} |
256 |
copyfile(stdin, fin); |
257 |
if (fseek(fin, 0L, 0) == -1) { |
258 |
fprintf(stderr, "%s: seek fail\n", progname); |
259 |
quit(1); |
260 |
} |
261 |
} |
262 |
} else if (i == argc-1) { |
263 |
if ((fin = fopen(argv[i], "r")) == NULL) { |
264 |
fprintf(stderr, "%s: can't open file \"%s\"\n", |
265 |
progname, argv[i]); |
266 |
quit(1); |
267 |
} |
268 |
} else { |
269 |
fprintf(stderr, "%s: bad # file arguments\n", progname); |
270 |
quit(1); |
271 |
} |
272 |
/* get header */ |
273 |
getheader(fin, headline, NULL); |
274 |
if (wrongformat) { |
275 |
fprintf(stderr, "%s: input must be a Radiance picture\n", |
276 |
progname); |
277 |
quit(1); |
278 |
} |
279 |
/* add new header info. */ |
280 |
printargs(i, argv, stdout); |
281 |
/* get picture size */ |
282 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
283 |
fprintf(stderr, "%s: bad picture size\n", progname); |
284 |
quit(1); |
285 |
} |
286 |
if (!(order & YMAJOR)) |
287 |
inpaspect = 1.0/inpaspect; |
288 |
/* wrap around for cylindrical view? */ |
289 |
wrapfilt = gotview && ourview.type == VT_CYL && |
290 |
ourview.horiz >= 360.-FTINY && order & YMAJOR; |
291 |
/* compute output resolution */ |
292 |
if (ncols <= 0) |
293 |
ncols = x_c*xres + .5; |
294 |
if (nrows <= 0) |
295 |
nrows = y_r*yres + .5; |
296 |
if (outaspect > .01) { |
297 |
d = inpaspect * yres/xres / outaspect; |
298 |
if (d * ncols > nrows) |
299 |
ncols = nrows / d; |
300 |
else |
301 |
nrows = ncols * d; |
302 |
} |
303 |
x_c = (double)ncols/xres; |
304 |
y_r = (double)nrows/yres; |
305 |
|
306 |
if (singlepass) { /* skip exposure, etc. */ |
307 |
pass1default(); |
308 |
pass2(fin); |
309 |
quit(0); |
310 |
} |
311 |
|
312 |
fpos = ftell(fin); /* save input file position */ |
313 |
|
314 |
pass1(fin); |
315 |
|
316 |
if (fseek(fin, fpos, 0) == -1) { |
317 |
fprintf(stderr, "%s: seek fail\n", progname); |
318 |
quit(1); |
319 |
} |
320 |
pass2(fin); |
321 |
|
322 |
quit(estatus); |
323 |
return estatus; /* pro forma return */ |
324 |
} |
325 |
|
326 |
|
327 |
static double |
328 |
rgb_bright( |
329 |
COLOR clr |
330 |
) |
331 |
{ |
332 |
return(bright(clr)); |
333 |
} |
334 |
|
335 |
|
336 |
static double |
337 |
xyz_bright( |
338 |
COLOR clr |
339 |
) |
340 |
{ |
341 |
return(clr[CIEY]); |
342 |
} |
343 |
|
344 |
|
345 |
brightfunc_t *ourbright = rgb_bright; |
346 |
|
347 |
static int |
348 |
headline( /* process line from header */ |
349 |
char *s, |
350 |
void *p |
351 |
) |
352 |
{ |
353 |
char fmt[32]; |
354 |
|
355 |
fputs(s, stdout); /* copy to output */ |
356 |
if (isaspect(s)) /* get aspect ratio */ |
357 |
inpaspect *= aspectval(s); |
358 |
else if (isexpos(s)) /* get exposure */ |
359 |
hotlvl *= exposval(s); |
360 |
else if (formatval(fmt, s)) { /* get format */ |
361 |
wrongformat = 0; |
362 |
if (!strcmp(COLRFMT, fmt)) |
363 |
ourbright = rgb_bright; |
364 |
else if (!strcmp(CIEFMT, fmt)) |
365 |
ourbright = xyz_bright; |
366 |
else |
367 |
wrongformat = !globmatch(PICFMT, fmt); |
368 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
369 |
gotview++; |
370 |
return(0); |
371 |
} |
372 |
|
373 |
|
374 |
static void |
375 |
copyfile( /* copy a file */ |
376 |
register FILE *in, |
377 |
register FILE *out |
378 |
) |
379 |
{ |
380 |
register int c; |
381 |
|
382 |
while ((c = getc(in)) != EOF) |
383 |
putc(c, out); |
384 |
|
385 |
if (ferror(out)) { |
386 |
fprintf(stderr, "%s: write error in copyfile\n", progname); |
387 |
quit(1); |
388 |
} |
389 |
} |
390 |
|
391 |
|
392 |
static void |
393 |
pass1( /* first pass of picture file */ |
394 |
FILE *in |
395 |
) |
396 |
{ |
397 |
int i; |
398 |
COLOR *scan; |
399 |
|
400 |
pass1init(); |
401 |
|
402 |
scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
403 |
if (scan == NULL) { |
404 |
fprintf(stderr, "%s: out of memory\n", progname); |
405 |
quit(1); |
406 |
} |
407 |
for (i = 0; i < yres; i++) { |
408 |
if (freadscan(scan, xres, in) < 0) { |
409 |
nrows = (long)nrows * i / yres; /* adjust frame */ |
410 |
if (nrows <= 0) { |
411 |
fprintf(stderr, "%s: empty frame\n", progname); |
412 |
quit(1); |
413 |
} |
414 |
fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
415 |
progname, (int)(100L*i/yres)); |
416 |
yres = i; |
417 |
y_r = (double)nrows/yres; |
418 |
estatus++; |
419 |
break; |
420 |
} |
421 |
pass1scan(scan, i); |
422 |
} |
423 |
free((void *)scan); |
424 |
} |
425 |
|
426 |
|
427 |
static void |
428 |
pass2( /* last pass on file, write to stdout */ |
429 |
FILE *in |
430 |
) |
431 |
{ |
432 |
int yread; |
433 |
int ycent, xcent; |
434 |
int r, c; |
435 |
|
436 |
pass2init(); |
437 |
scan2init(); |
438 |
yread = 0; |
439 |
for (r = 0; r < nrows; r++) { |
440 |
ycent = (r+.5)*yres/nrows; |
441 |
while (yread <= ycent+yrad) { |
442 |
if (yread < yres) { |
443 |
if (freadscan(scanin[yread%barsize], |
444 |
xres, in) < 0) { |
445 |
fprintf(stderr, |
446 |
"%s: truncated input (y=%d)\n", |
447 |
progname, yres-1-yread); |
448 |
quit(1); |
449 |
} |
450 |
pass2scan(scanin[yread%barsize], yread); |
451 |
} |
452 |
yread++; |
453 |
} |
454 |
if (obarsize > 0) |
455 |
scan2sync(r); |
456 |
for (c = 0; c < ncols; c++) { |
457 |
xcent = (c+.5)*xres/ncols; |
458 |
if (thresh > FTINY) |
459 |
dothresh(xcent, ycent, c, r); |
460 |
else if (rad > FTINY) |
461 |
dogauss(scanout[c], xcent, ycent, c, r); |
462 |
else |
463 |
dobox(scanout[c], xcent, ycent, c, r); |
464 |
} |
465 |
if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) { |
466 |
fprintf(stderr, "%s: write error in pass2\n", progname); |
467 |
quit(1); |
468 |
} |
469 |
} |
470 |
/* skip leftover input */ |
471 |
while (yread < yres) { |
472 |
if (freadscan(scanin[0], xres, in) < 0) |
473 |
break; |
474 |
yread++; |
475 |
} |
476 |
scan2flush(); /* flush output */ |
477 |
} |
478 |
|
479 |
|
480 |
static void |
481 |
scan2init(void) /* prepare scanline arrays */ |
482 |
{ |
483 |
COLOR ctmp; |
484 |
double d; |
485 |
register int i; |
486 |
|
487 |
xbrad = xres/ncols/2 + 1; |
488 |
ybrad = yres/nrows/2 + 1; |
489 |
if (rad > FTINY) { |
490 |
if (nrows >= yres && ncols >= xres) |
491 |
rad *= (y_r + x_c)/2.0; |
492 |
|
493 |
if (thresh > FTINY) { |
494 |
orad = CHECKRAD*THRESHRAD*rad + 1; |
495 |
xrad = orad/x_c + xbrad; |
496 |
yrad = orad/y_r + ybrad; |
497 |
obarsize = 2*orad + 1; |
498 |
} else { |
499 |
xrad = CHECKRAD*rad/x_c + 1; |
500 |
yrad = CHECKRAD*rad/y_r + 1; |
501 |
} |
502 |
initmask(); /* initialize filter table */ |
503 |
} else { |
504 |
xrad = xbrad; |
505 |
yrad = ybrad; |
506 |
} |
507 |
barsize = 2*yrad + 1; |
508 |
scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
509 |
if (scanin == NULL) |
510 |
goto memerr; |
511 |
for (i = 0; i < barsize; i++) { |
512 |
scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
513 |
if (scanin[i] == NULL) |
514 |
goto memerr; |
515 |
} |
516 |
if (obarsize > 0) { |
517 |
scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *)); |
518 |
greybar = (float **)malloc(obarsize*sizeof(float *)); |
519 |
if ((scoutbar == NULL) | (greybar == NULL)) |
520 |
goto memerr; |
521 |
for (i = 0; i < obarsize; i++) { |
522 |
scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR)); |
523 |
greybar[i] = (float *)malloc(ncols*sizeof(float)); |
524 |
if ((scoutbar[i] == NULL) | (greybar[i] == NULL)) |
525 |
goto memerr; |
526 |
} |
527 |
} else { |
528 |
scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
529 |
if (scanout == NULL) |
530 |
goto memerr; |
531 |
} |
532 |
/* record pixel aspect ratio */ |
533 |
if (!correctaspect) { |
534 |
d = order & YMAJOR ? x_c/y_r : y_r/x_c ; |
535 |
if (!FEQ(d,1.0)) |
536 |
fputaspect(d, stdout); |
537 |
} |
538 |
/* record exposure */ |
539 |
d = (*ourbright)(exposure); |
540 |
if (!FEQ(d,1.0)) |
541 |
fputexpos(d, stdout); |
542 |
/* record color correction */ |
543 |
copycolor(ctmp, exposure); |
544 |
scalecolor(ctmp, 1.0/d); |
545 |
if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) || |
546 |
!FEQ(colval(ctmp,GRN),colval(ctmp,BLU))) |
547 |
fputcolcor(ctmp, stdout); |
548 |
printf("\n"); |
549 |
/* write out resolution */ |
550 |
fputresolu(order, ncols, nrows, stdout); |
551 |
return; |
552 |
memerr: |
553 |
fprintf(stderr, "%s: out of memory\n", progname); |
554 |
quit(1); |
555 |
} |
556 |
|
557 |
|
558 |
static void |
559 |
scan2sync( /* synchronize grey averages and output scan */ |
560 |
int r |
561 |
) |
562 |
{ |
563 |
static int nextrow = 0; |
564 |
COLOR ctmp; |
565 |
int ybot; |
566 |
register int c; |
567 |
/* average input scanlines */ |
568 |
while (nextrow <= r+orad && nextrow < nrows) { |
569 |
ybot = (nextrow+.5)*yres/nrows; |
570 |
for (c = 0; c < ncols; c++) { |
571 |
dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow); |
572 |
greybar[nextrow%obarsize][c] = (*ourbright)(ctmp); |
573 |
} |
574 |
/* and zero output scanline */ |
575 |
memset((char *)scoutbar[nextrow%obarsize], '\0', ncols*sizeof(COLOR)); |
576 |
nextrow++; |
577 |
} |
578 |
/* point to top scanline for output */ |
579 |
if (r-orad >= 0) |
580 |
scanout = scoutbar[(r-orad)%obarsize]; |
581 |
else |
582 |
scanout = NULL; |
583 |
} |
584 |
|
585 |
|
586 |
static void |
587 |
scan2flush(void) /* flush output buffer */ |
588 |
{ |
589 |
register int r; |
590 |
|
591 |
for (r = nrows-orad; r < nrows; r++) |
592 |
if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0) |
593 |
break; |
594 |
if (fflush(stdout) < 0) { |
595 |
fprintf(stderr, "%s: write error at end of pass2\n", progname); |
596 |
quit(1); |
597 |
} |
598 |
} |
599 |
|
600 |
|
601 |
void |
602 |
quit(code) /* remove temporary file and exit */ |
603 |
int code; |
604 |
{ |
605 |
if (tfname != NULL) |
606 |
unlink(tfname); |
607 |
exit(code); |
608 |
} |