1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: pfilt.c,v 2.30 2004/03/29 00:34:23 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 void copyfile(FILE *in, FILE *out); |
91 |
static void pass1(FILE *in); |
92 |
static void pass2(FILE *in); |
93 |
static void scan2init(void); |
94 |
static void scan2sync(int r); |
95 |
static void scan2flush(void); |
96 |
|
97 |
|
98 |
int |
99 |
main( |
100 |
int argc, |
101 |
char **argv |
102 |
) |
103 |
{ |
104 |
FILE *fin; |
105 |
float *lampcolor; |
106 |
char *lamptype = NULL; |
107 |
long fpos; |
108 |
double outaspect = 0.0; |
109 |
double d; |
110 |
int i, j; |
111 |
SET_DEFAULT_BINARY(); |
112 |
SET_FILE_BINARY(stdin); |
113 |
SET_FILE_BINARY(stdout); |
114 |
if (signal(SIGINT, quit) == SIG_IGN) |
115 |
signal(SIGINT, SIG_IGN); |
116 |
#ifdef SIGHUP |
117 |
if (signal(SIGHUP, quit) == SIG_IGN) |
118 |
signal(SIGHUP, SIG_IGN); |
119 |
#endif |
120 |
signal(SIGTERM, quit); |
121 |
#ifdef SIGPIPE |
122 |
signal(SIGPIPE, quit); |
123 |
#endif |
124 |
#ifdef SIGXCPU |
125 |
signal(SIGXCPU, quit); |
126 |
signal(SIGXFSZ, quit); |
127 |
#endif |
128 |
|
129 |
progname = argv[0] = fixargv0(argv[0]); |
130 |
|
131 |
for (i = 1; i < argc; i++) |
132 |
if (argv[i][0] == '-') |
133 |
switch (argv[i][1]) { |
134 |
case 'x': |
135 |
i++; |
136 |
if (argv[i][0] == '/') { |
137 |
x_c = 1.0/atof(argv[i]+1); |
138 |
ncols = 0; |
139 |
} else |
140 |
ncols = atoi(argv[i]); |
141 |
break; |
142 |
case 'y': |
143 |
i++; |
144 |
if (argv[i][0] == '/') { |
145 |
y_r = 1.0/atof(argv[i]+1); |
146 |
nrows = 0; |
147 |
} else |
148 |
nrows = atoi(argv[i]); |
149 |
break; |
150 |
case 'c': |
151 |
correctaspect = !correctaspect; |
152 |
break; |
153 |
case 'p': |
154 |
i++; |
155 |
outaspect = atof(argv[i]); |
156 |
break; |
157 |
case 'e': |
158 |
if (argv[i+1][0] == '+' || argv[i+1][0] == '-') |
159 |
d = pow(2.0, atof(argv[i+1])); |
160 |
else |
161 |
d = atof(argv[i+1]); |
162 |
if (d < 1e-20 || d > 1e20) { |
163 |
fprintf(stderr, |
164 |
"%s: exposure out of range\n", |
165 |
argv[0]); |
166 |
quit(1); |
167 |
} |
168 |
switch (argv[i][2]) { |
169 |
case '\0': |
170 |
scalecolor(exposure, d); |
171 |
break; |
172 |
case 'r': |
173 |
colval(exposure,RED) *= d; |
174 |
break; |
175 |
case 'g': |
176 |
colval(exposure,GRN) *= d; |
177 |
break; |
178 |
case 'b': |
179 |
colval(exposure,BLU) *= d; |
180 |
break; |
181 |
default: |
182 |
goto badopt; |
183 |
} |
184 |
i++; |
185 |
break; |
186 |
case 'f': |
187 |
lampdat = argv[++i]; |
188 |
break; |
189 |
case 't': |
190 |
lamptype = argv[++i]; |
191 |
break; |
192 |
case '1': |
193 |
singlepass = 1; |
194 |
break; |
195 |
case '2': |
196 |
singlepass = 0; |
197 |
break; |
198 |
case 'n': |
199 |
npts = atoi(argv[++i]) / 2; |
200 |
break; |
201 |
case 's': |
202 |
spread = atof(argv[++i]); |
203 |
break; |
204 |
case 'a': |
205 |
avghot = !avghot; |
206 |
break; |
207 |
case 'h': |
208 |
hotlvl = atof(argv[++i]); |
209 |
break; |
210 |
case 'r': |
211 |
rad = atof(argv[++i]); |
212 |
break; |
213 |
case 'm': |
214 |
thresh = atof(argv[++i]); |
215 |
if (rad <= FTINY) |
216 |
rad = 0.6; |
217 |
break; |
218 |
case 'b': |
219 |
rad = thresh = 0.0; |
220 |
break; |
221 |
default:; |
222 |
badopt: |
223 |
fprintf(stderr, "%s: unknown option: %s\n", |
224 |
progname, argv[i]); |
225 |
quit(1); |
226 |
break; |
227 |
} |
228 |
else |
229 |
break; |
230 |
/* get lamp data (if necessary) */ |
231 |
if (lamptype != NULL) { |
232 |
if (loadlamps(lampdat) < 0) |
233 |
quit(1); |
234 |
if ((lampcolor = matchlamp(lamptype)) == NULL) { |
235 |
fprintf(stderr, "%s: unknown lamp type\n", lamptype); |
236 |
quit(1); |
237 |
} |
238 |
for (j = 0; j < 3; j++) |
239 |
if (lampcolor[j] > 1e-4) |
240 |
colval(exposure,j) /= lampcolor[j]; |
241 |
freelamps(); |
242 |
} |
243 |
/* open input file */ |
244 |
if (i == argc) { |
245 |
if (singlepass) |
246 |
fin = stdin; |
247 |
else { |
248 |
tfname = mktemp(template); |
249 |
if ((fin = fopen(tfname, "w+")) == NULL) { |
250 |
fprintf(stderr, "%s: can't create ", progname); |
251 |
fprintf(stderr, "temp file \"%s\"\n", tfname); |
252 |
quit(1); |
253 |
} |
254 |
copyfile(stdin, fin); |
255 |
if (fseek(fin, 0L, 0) == -1) { |
256 |
fprintf(stderr, "%s: seek fail\n", progname); |
257 |
quit(1); |
258 |
} |
259 |
} |
260 |
} else if (i == argc-1) { |
261 |
if ((fin = fopen(argv[i], "r")) == NULL) { |
262 |
fprintf(stderr, "%s: can't open file \"%s\"\n", |
263 |
progname, argv[i]); |
264 |
quit(1); |
265 |
} |
266 |
} else { |
267 |
fprintf(stderr, "%s: bad # file arguments\n", progname); |
268 |
quit(1); |
269 |
} |
270 |
/* get header */ |
271 |
getheader(fin, headline, NULL); |
272 |
if (wrongformat) { |
273 |
fprintf(stderr, "%s: input must be a Radiance picture\n", |
274 |
progname); |
275 |
quit(1); |
276 |
} |
277 |
/* add new header info. */ |
278 |
printargs(i, argv, stdout); |
279 |
/* get picture size */ |
280 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
281 |
fprintf(stderr, "%s: bad picture size\n", progname); |
282 |
quit(1); |
283 |
} |
284 |
if (!(order & YMAJOR)) |
285 |
inpaspect = 1.0/inpaspect; |
286 |
/* wrap around for cylindrical view? */ |
287 |
wrapfilt = gotview && ourview.type == VT_CYL && |
288 |
ourview.horiz >= 360.-FTINY && order & YMAJOR; |
289 |
/* compute output resolution */ |
290 |
if (ncols <= 0) |
291 |
ncols = x_c*xres + .5; |
292 |
if (nrows <= 0) |
293 |
nrows = y_r*yres + .5; |
294 |
if (outaspect > .01) { |
295 |
d = inpaspect * yres/xres / outaspect; |
296 |
if (d * ncols > nrows) |
297 |
ncols = nrows / d; |
298 |
else |
299 |
nrows = ncols * d; |
300 |
} |
301 |
x_c = (double)ncols/xres; |
302 |
y_r = (double)nrows/yres; |
303 |
|
304 |
if (singlepass) { /* skip exposure, etc. */ |
305 |
pass1default(); |
306 |
pass2(fin); |
307 |
quit(0); |
308 |
} |
309 |
|
310 |
fpos = ftell(fin); /* save input file position */ |
311 |
|
312 |
pass1(fin); |
313 |
|
314 |
if (fseek(fin, fpos, 0) == -1) { |
315 |
fprintf(stderr, "%s: seek fail\n", progname); |
316 |
quit(1); |
317 |
} |
318 |
pass2(fin); |
319 |
|
320 |
quit(estatus); |
321 |
return estatus; /* pro forma return */ |
322 |
} |
323 |
|
324 |
|
325 |
static double |
326 |
rgb_bright( |
327 |
COLOR clr |
328 |
) |
329 |
{ |
330 |
return(bright(clr)); |
331 |
} |
332 |
|
333 |
|
334 |
static double |
335 |
xyz_bright( |
336 |
COLOR clr |
337 |
) |
338 |
{ |
339 |
return(clr[CIEY]); |
340 |
} |
341 |
|
342 |
|
343 |
brightfunc_t *ourbright = rgb_bright; |
344 |
|
345 |
static int |
346 |
headline( /* process line from header */ |
347 |
char *s, |
348 |
void *p |
349 |
) |
350 |
{ |
351 |
char fmt[32]; |
352 |
|
353 |
fputs(s, stdout); /* copy to output */ |
354 |
if (isaspect(s)) /* get aspect ratio */ |
355 |
inpaspect *= aspectval(s); |
356 |
else if (isexpos(s)) /* get exposure */ |
357 |
hotlvl *= exposval(s); |
358 |
else if (formatval(fmt, s)) { /* get format */ |
359 |
wrongformat = 0; |
360 |
if (!strcmp(COLRFMT, fmt)) |
361 |
ourbright = rgb_bright; |
362 |
else if (!strcmp(CIEFMT, fmt)) |
363 |
ourbright = xyz_bright; |
364 |
else |
365 |
wrongformat = !globmatch(PICFMT, fmt); |
366 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
367 |
gotview++; |
368 |
return(0); |
369 |
} |
370 |
|
371 |
|
372 |
static void |
373 |
copyfile( /* copy a file */ |
374 |
register FILE *in, |
375 |
register FILE *out |
376 |
) |
377 |
{ |
378 |
register int c; |
379 |
|
380 |
while ((c = getc(in)) != EOF) |
381 |
putc(c, out); |
382 |
|
383 |
if (ferror(out)) { |
384 |
fprintf(stderr, "%s: write error in copyfile\n", progname); |
385 |
quit(1); |
386 |
} |
387 |
} |
388 |
|
389 |
|
390 |
static void |
391 |
pass1( /* first pass of picture file */ |
392 |
FILE *in |
393 |
) |
394 |
{ |
395 |
int i; |
396 |
COLOR *scan; |
397 |
|
398 |
pass1init(); |
399 |
|
400 |
scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
401 |
if (scan == NULL) { |
402 |
fprintf(stderr, "%s: out of memory\n", progname); |
403 |
quit(1); |
404 |
} |
405 |
for (i = 0; i < yres; i++) { |
406 |
if (freadscan(scan, xres, in) < 0) { |
407 |
nrows = (long)nrows * i / yres; /* adjust frame */ |
408 |
if (nrows <= 0) { |
409 |
fprintf(stderr, "%s: empty frame\n", progname); |
410 |
quit(1); |
411 |
} |
412 |
fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
413 |
progname, (int)(100L*i/yres)); |
414 |
yres = i; |
415 |
y_r = (double)nrows/yres; |
416 |
estatus++; |
417 |
break; |
418 |
} |
419 |
pass1scan(scan, i); |
420 |
} |
421 |
free((void *)scan); |
422 |
} |
423 |
|
424 |
|
425 |
static void |
426 |
pass2( /* last pass on file, write to stdout */ |
427 |
FILE *in |
428 |
) |
429 |
{ |
430 |
int yread; |
431 |
int ycent, xcent; |
432 |
int r, c; |
433 |
|
434 |
pass2init(); |
435 |
scan2init(); |
436 |
yread = 0; |
437 |
for (r = 0; r < nrows; r++) { |
438 |
ycent = (r+.5)*yres/nrows; |
439 |
while (yread <= ycent+yrad) { |
440 |
if (yread < yres) { |
441 |
if (freadscan(scanin[yread%barsize], |
442 |
xres, in) < 0) { |
443 |
fprintf(stderr, |
444 |
"%s: truncated input (y=%d)\n", |
445 |
progname, yres-1-yread); |
446 |
quit(1); |
447 |
} |
448 |
pass2scan(scanin[yread%barsize], yread); |
449 |
} |
450 |
yread++; |
451 |
} |
452 |
if (obarsize > 0) |
453 |
scan2sync(r); |
454 |
for (c = 0; c < ncols; c++) { |
455 |
xcent = (c+.5)*xres/ncols; |
456 |
if (thresh > FTINY) |
457 |
dothresh(xcent, ycent, c, r); |
458 |
else if (rad > FTINY) |
459 |
dogauss(scanout[c], xcent, ycent, c, r); |
460 |
else |
461 |
dobox(scanout[c], xcent, ycent, c, r); |
462 |
} |
463 |
if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) { |
464 |
fprintf(stderr, "%s: write error in pass2\n", progname); |
465 |
quit(1); |
466 |
} |
467 |
} |
468 |
/* skip leftover input */ |
469 |
while (yread < yres) { |
470 |
if (freadscan(scanin[0], xres, in) < 0) |
471 |
break; |
472 |
yread++; |
473 |
} |
474 |
scan2flush(); /* flush output */ |
475 |
} |
476 |
|
477 |
|
478 |
static void |
479 |
scan2init(void) /* prepare scanline arrays */ |
480 |
{ |
481 |
COLOR ctmp; |
482 |
double d; |
483 |
register int i; |
484 |
|
485 |
xbrad = xres/ncols/2 + 1; |
486 |
ybrad = yres/nrows/2 + 1; |
487 |
if (rad > FTINY) { |
488 |
if (nrows >= yres && ncols >= xres) |
489 |
rad *= (y_r + x_c)/2.0; |
490 |
|
491 |
if (thresh > FTINY) { |
492 |
orad = CHECKRAD*THRESHRAD*rad + 1; |
493 |
xrad = orad/x_c + xbrad; |
494 |
yrad = orad/y_r + ybrad; |
495 |
obarsize = 2*orad + 1; |
496 |
} else { |
497 |
xrad = CHECKRAD*rad/x_c + 1; |
498 |
yrad = CHECKRAD*rad/y_r + 1; |
499 |
} |
500 |
initmask(); /* initialize filter table */ |
501 |
} else { |
502 |
xrad = xbrad; |
503 |
yrad = ybrad; |
504 |
} |
505 |
barsize = 2*yrad + 1; |
506 |
scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
507 |
if (scanin == NULL) |
508 |
goto memerr; |
509 |
for (i = 0; i < barsize; i++) { |
510 |
scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
511 |
if (scanin[i] == NULL) |
512 |
goto memerr; |
513 |
} |
514 |
if (obarsize > 0) { |
515 |
scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *)); |
516 |
greybar = (float **)malloc(obarsize*sizeof(float *)); |
517 |
if ((scoutbar == NULL) | (greybar == NULL)) |
518 |
goto memerr; |
519 |
for (i = 0; i < obarsize; i++) { |
520 |
scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR)); |
521 |
greybar[i] = (float *)malloc(ncols*sizeof(float)); |
522 |
if ((scoutbar[i] == NULL) | (greybar[i] == NULL)) |
523 |
goto memerr; |
524 |
} |
525 |
} else { |
526 |
scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
527 |
if (scanout == NULL) |
528 |
goto memerr; |
529 |
} |
530 |
/* record pixel aspect ratio */ |
531 |
if (!correctaspect) { |
532 |
d = order & YMAJOR ? x_c/y_r : y_r/x_c ; |
533 |
if (!FEQ(d,1.0)) |
534 |
fputaspect(d, stdout); |
535 |
} |
536 |
/* record exposure */ |
537 |
d = (*ourbright)(exposure); |
538 |
if (!FEQ(d,1.0)) |
539 |
fputexpos(d, stdout); |
540 |
/* record color correction */ |
541 |
copycolor(ctmp, exposure); |
542 |
scalecolor(ctmp, 1.0/d); |
543 |
if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) || |
544 |
!FEQ(colval(ctmp,GRN),colval(ctmp,BLU))) |
545 |
fputcolcor(ctmp, stdout); |
546 |
printf("\n"); |
547 |
/* write out resolution */ |
548 |
fputresolu(order, ncols, nrows, stdout); |
549 |
return; |
550 |
memerr: |
551 |
fprintf(stderr, "%s: out of memory\n", progname); |
552 |
quit(1); |
553 |
} |
554 |
|
555 |
|
556 |
static void |
557 |
scan2sync( /* synchronize grey averages and output scan */ |
558 |
int r |
559 |
) |
560 |
{ |
561 |
static int nextrow = 0; |
562 |
COLOR ctmp; |
563 |
int ybot; |
564 |
register int c; |
565 |
/* average input scanlines */ |
566 |
while (nextrow <= r+orad && nextrow < nrows) { |
567 |
ybot = (nextrow+.5)*yres/nrows; |
568 |
for (c = 0; c < ncols; c++) { |
569 |
dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow); |
570 |
greybar[nextrow%obarsize][c] = (*ourbright)(ctmp); |
571 |
} |
572 |
/* and zero output scanline */ |
573 |
memset((char *)scoutbar[nextrow%obarsize], '\0', ncols*sizeof(COLOR)); |
574 |
nextrow++; |
575 |
} |
576 |
/* point to top scanline for output */ |
577 |
if (r-orad >= 0) |
578 |
scanout = scoutbar[(r-orad)%obarsize]; |
579 |
else |
580 |
scanout = NULL; |
581 |
} |
582 |
|
583 |
|
584 |
static void |
585 |
scan2flush(void) /* flush output buffer */ |
586 |
{ |
587 |
register int r; |
588 |
|
589 |
for (r = nrows-orad; r < nrows; r++) |
590 |
if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0) |
591 |
break; |
592 |
if (fflush(stdout) < 0) { |
593 |
fprintf(stderr, "%s: write error at end of pass2\n", progname); |
594 |
quit(1); |
595 |
} |
596 |
} |
597 |
|
598 |
|
599 |
void |
600 |
quit(code) /* remove temporary file and exit */ |
601 |
int code; |
602 |
{ |
603 |
if (tfname != NULL) |
604 |
unlink(tfname); |
605 |
exit(code); |
606 |
} |