1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rc2.c,v 2.23 2019/08/14 20:07:20 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Accumulate ray contributions for a set of materials |
6 |
* File i/o and recovery |
7 |
*/ |
8 |
|
9 |
#include <ctype.h> |
10 |
#include "platform.h" |
11 |
#include "rcontrib.h" |
12 |
#include "resolu.h" |
13 |
|
14 |
/* Close output stream and free record */ |
15 |
static void |
16 |
closestream(void *p) |
17 |
{ |
18 |
STREAMOUT *sop = (STREAMOUT *)p; |
19 |
|
20 |
if (sop->ofp != NULL) { |
21 |
int status = 0; |
22 |
if (sop->outpipe) |
23 |
status = pclose(sop->ofp); |
24 |
else if (sop->ofp != stdout) |
25 |
status = fclose(sop->ofp); |
26 |
if (status) |
27 |
error(SYSTEM, "error closing output stream"); |
28 |
} |
29 |
free(p); |
30 |
} |
31 |
|
32 |
LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */ |
33 |
|
34 |
#define OF_MODIFIER 01 |
35 |
#define OF_BIN 02 |
36 |
|
37 |
/************************** STREAM & FILE I/O ***************************/ |
38 |
|
39 |
/* Construct output file name and return flags whether modifier/bin present */ |
40 |
static int |
41 |
ofname(char *oname, const char *ospec, const char *mname, int bn) |
42 |
{ |
43 |
const char *mnp = NULL; |
44 |
const char *bnp = NULL; |
45 |
const char *cp; |
46 |
|
47 |
if (ospec == NULL) |
48 |
return(-1); |
49 |
for (cp = ospec; *cp; cp++) /* check format position(s) */ |
50 |
if (*cp == '%') { |
51 |
do |
52 |
++cp; |
53 |
while (isdigit(*cp)); |
54 |
switch (*cp) { |
55 |
case '%': |
56 |
break; |
57 |
case 's': |
58 |
if (mnp != NULL) |
59 |
return(-1); |
60 |
mnp = cp; |
61 |
break; |
62 |
case 'd': |
63 |
case 'i': |
64 |
case 'o': |
65 |
case 'x': |
66 |
case 'X': |
67 |
if (bnp != NULL) |
68 |
return(-1); |
69 |
bnp = cp; |
70 |
break; |
71 |
default: |
72 |
return(-1); |
73 |
} |
74 |
} |
75 |
if (mnp != NULL) { /* create file name */ |
76 |
if (bnp != NULL) { |
77 |
if (bnp > mnp) |
78 |
sprintf(oname, ospec, mname, bn); |
79 |
else |
80 |
sprintf(oname, ospec, bn, mname); |
81 |
return(OF_MODIFIER|OF_BIN); |
82 |
} |
83 |
sprintf(oname, ospec, mname); |
84 |
return(OF_MODIFIER); |
85 |
} |
86 |
if (bnp != NULL) { |
87 |
sprintf(oname, ospec, bn); |
88 |
return(OF_BIN); |
89 |
} |
90 |
strcpy(oname, ospec); |
91 |
return(0); |
92 |
} |
93 |
|
94 |
|
95 |
/* Write header to the given output stream */ |
96 |
static void |
97 |
printheader(FILE *fout, const char *info) |
98 |
{ |
99 |
extern char VersionID[]; |
100 |
/* copy octree header */ |
101 |
if (octname[0] == '!') { |
102 |
newheader("RADIANCE", fout); |
103 |
fputs(octname+1, fout); |
104 |
if (octname[strlen(octname)-1] != '\n') |
105 |
fputc('\n', fout); |
106 |
} else { |
107 |
FILE *fin = fopen(octname, (outfmt=='a') ? "r" : "rb"); |
108 |
if (fin == NULL) |
109 |
quit(1); |
110 |
checkheader(fin, OCTFMT, fout); |
111 |
fclose(fin); |
112 |
} |
113 |
printargs(gargc-1, gargv, fout); /* add our command */ |
114 |
fprintf(fout, "SOFTWARE= %s\n", VersionID); |
115 |
fputnow(fout); |
116 |
fputs("NCOMP=3\n", fout); /* always RGB */ |
117 |
if (info != NULL) /* add extra info if given */ |
118 |
fputs(info, fout); |
119 |
if ((outfmt == 'f') | (outfmt == 'd')) |
120 |
fputendian(fout); |
121 |
fputformat(formstr(outfmt), fout); |
122 |
fputc('\n', fout); /* empty line ends header */ |
123 |
} |
124 |
|
125 |
|
126 |
/* Write resolution string to given output stream */ |
127 |
static void |
128 |
printresolu(FILE *fout, int xr, int yr) |
129 |
{ |
130 |
if ((xr > 0) & (yr > 0)) /* resolution string */ |
131 |
fprtresolu(xr, yr, fout); |
132 |
} |
133 |
|
134 |
|
135 |
/* Get output stream pointer (open and write header if new and noopen==0) */ |
136 |
STREAMOUT * |
137 |
getostream(const char *ospec, const char *mname, int bn, int noopen) |
138 |
{ |
139 |
static STREAMOUT stdos; |
140 |
char info[1024]; |
141 |
int ofl; |
142 |
char oname[1024]; |
143 |
LUENT *lep; |
144 |
STREAMOUT *sop; |
145 |
char *cp; |
146 |
|
147 |
if (ospec == NULL) { /* use stdout? */ |
148 |
if (!noopen & !using_stdout) { |
149 |
if (outfmt != 'a') |
150 |
SET_FILE_BINARY(stdout); |
151 |
#ifdef getc_unlocked |
152 |
flockfile(stdout); /* avoid lock/unlock overhead */ |
153 |
#endif |
154 |
if (header) { |
155 |
cp = info; |
156 |
if (yres > 0) { |
157 |
sprintf(cp, "NROWS=%d\n", yres * |
158 |
(xres + !xres) ); |
159 |
while (*cp) ++cp; |
160 |
} |
161 |
if ((xres <= 0) | (stdos.reclen > 1)) |
162 |
sprintf(cp, "NCOLS=%d\n", stdos.reclen); |
163 |
printheader(stdout, info); |
164 |
} |
165 |
if (stdos.reclen == 1) |
166 |
printresolu(stdout, xres, yres); |
167 |
if (waitflush > 0) |
168 |
fflush(stdout); |
169 |
stdos.xr = xres; stdos.yr = yres; |
170 |
using_stdout = 1; |
171 |
} |
172 |
stdos.ofp = stdout; |
173 |
stdos.reclen += noopen; |
174 |
return(&stdos); |
175 |
} |
176 |
ofl = ofname(oname, ospec, mname, bn); /* get output name */ |
177 |
if (ofl < 0) { |
178 |
sprintf(errmsg, "bad output format '%s'", ospec); |
179 |
error(USER, errmsg); |
180 |
} |
181 |
lep = lu_find(&ofiletab, oname); /* look it up */ |
182 |
if (lep->key == NULL) /* new entry */ |
183 |
lep->key = strcpy((char *)malloc(strlen(oname)+1), oname); |
184 |
sop = (STREAMOUT *)lep->data; |
185 |
if (sop == NULL) { /* allocate stream */ |
186 |
sop = (STREAMOUT *)malloc(sizeof(STREAMOUT)); |
187 |
if (sop == NULL) |
188 |
error(SYSTEM, "out of memory in getostream"); |
189 |
sop->outpipe = (oname[0] == '!'); |
190 |
sop->reclen = 0; |
191 |
sop->ofp = NULL; /* open iff noopen==0 */ |
192 |
sop->xr = xres; sop->yr = yres; |
193 |
lep->data = (char *)sop; |
194 |
if (!sop->outpipe & !force_open & !recover && |
195 |
access(oname, F_OK) == 0) { |
196 |
errno = EEXIST; /* file exists */ |
197 |
goto openerr; |
198 |
} |
199 |
} else if (noopen && outfmt == 'c' && /* stream exists to picture? */ |
200 |
(sop->xr > 0) & (sop->yr > 0)) { |
201 |
if (ofl & OF_BIN) |
202 |
return(NULL); /* let caller offset bins */ |
203 |
sprintf(errmsg, "output '%s' not a valid picture", oname); |
204 |
error(WARNING, errmsg); |
205 |
} |
206 |
if (!noopen && sop->ofp == NULL) { /* open output stream */ |
207 |
if (oname[0] == '!') /* output to command */ |
208 |
sop->ofp = popen(oname+1, "w"); |
209 |
else /* else open file */ |
210 |
sop->ofp = fopen(oname, "w"); |
211 |
if (sop->ofp == NULL) |
212 |
goto openerr; |
213 |
if (outfmt != 'a') |
214 |
SET_FILE_BINARY(sop->ofp); |
215 |
#ifdef getc_unlocked |
216 |
flockfile(sop->ofp); /* avoid lock/unlock overhead */ |
217 |
#endif |
218 |
if (accumulate > 0) { /* global resolution */ |
219 |
sop->xr = xres; sop->yr = yres; |
220 |
} |
221 |
if (header) { |
222 |
cp = info; |
223 |
if (ofl & OF_MODIFIER || sop->reclen == 1) { |
224 |
sprintf(cp, "MODIFIER=%s\n", mname); |
225 |
while (*cp) ++cp; |
226 |
} |
227 |
if (ofl & OF_BIN) { |
228 |
sprintf(cp, "BIN=%d\n", bn); |
229 |
while (*cp) ++cp; |
230 |
} |
231 |
if (sop->yr > 0) { |
232 |
sprintf(cp, "NROWS=%d\n", sop->yr * |
233 |
(sop->xr + !sop->xr) ); |
234 |
while (*cp) ++cp; |
235 |
} |
236 |
if ((sop->xr <= 0) | (sop->reclen > 1)) |
237 |
sprintf(cp, "NCOLS=%d\n", sop->reclen); |
238 |
printheader(sop->ofp, info); |
239 |
} |
240 |
if (sop->reclen == 1) |
241 |
printresolu(sop->ofp, sop->xr, sop->yr); |
242 |
if (waitflush > 0) |
243 |
fflush(sop->ofp); |
244 |
} |
245 |
sop->reclen += noopen; /* add to length if noopen */ |
246 |
return(sop); /* return output stream */ |
247 |
openerr: |
248 |
sprintf(errmsg, "cannot open '%s' for writing", oname); |
249 |
error(SYSTEM, errmsg); |
250 |
return(NULL); /* pro forma return */ |
251 |
} |
252 |
|
253 |
|
254 |
/* Get a vector from stdin */ |
255 |
int |
256 |
getvec(FVECT vec) |
257 |
{ |
258 |
float vf[3]; |
259 |
double vd[3]; |
260 |
char buf[32]; |
261 |
int i; |
262 |
|
263 |
switch (inpfmt) { |
264 |
case 'a': /* ascii */ |
265 |
for (i = 0; i < 3; i++) { |
266 |
if (fgetword(buf, sizeof(buf), stdin) == NULL || |
267 |
!isflt(buf)) |
268 |
return(-1); |
269 |
vec[i] = atof(buf); |
270 |
} |
271 |
break; |
272 |
case 'f': /* binary float */ |
273 |
if (getbinary((char *)vf, sizeof(float), 3, stdin) != 3) |
274 |
return(-1); |
275 |
VCOPY(vec, vf); |
276 |
break; |
277 |
case 'd': /* binary double */ |
278 |
if (getbinary((char *)vd, sizeof(double), 3, stdin) != 3) |
279 |
return(-1); |
280 |
VCOPY(vec, vd); |
281 |
break; |
282 |
default: |
283 |
error(CONSISTENCY, "botched input format"); |
284 |
} |
285 |
return(0); |
286 |
} |
287 |
|
288 |
|
289 |
/* Put out ray contribution to file */ |
290 |
static void |
291 |
put_contrib(const DCOLOR cnt, FILE *fout) |
292 |
{ |
293 |
double sf = 1; |
294 |
COLOR fv; |
295 |
COLR cv; |
296 |
|
297 |
if (accumulate > 1) |
298 |
sf = 1./(double)accumulate; |
299 |
switch (outfmt) { |
300 |
case 'a': |
301 |
if (accumulate > 1) |
302 |
fprintf(fout, "%.6e\t%.6e\t%.6e\t", |
303 |
sf*cnt[0], sf*cnt[1], sf*cnt[2]); |
304 |
else |
305 |
fprintf(fout, "%.6e\t%.6e\t%.6e\t", |
306 |
cnt[0], cnt[1], cnt[2]); |
307 |
break; |
308 |
case 'f': |
309 |
if (accumulate > 1) { |
310 |
copycolor(fv, cnt); |
311 |
scalecolor(fv, sf); |
312 |
} else |
313 |
copycolor(fv, cnt); |
314 |
putbinary(fv, sizeof(float), 3, fout); |
315 |
break; |
316 |
case 'd': |
317 |
if (accumulate > 1) { |
318 |
DCOLOR dv; |
319 |
copycolor(dv, cnt); |
320 |
scalecolor(dv, sf); |
321 |
putbinary(dv, sizeof(double), 3, fout); |
322 |
} else |
323 |
putbinary(cnt, sizeof(double), 3, fout); |
324 |
break; |
325 |
case 'c': |
326 |
if (accumulate > 1) |
327 |
setcolr(cv, sf*cnt[0], sf*cnt[1], sf*cnt[2]); |
328 |
else |
329 |
setcolr(cv, cnt[0], cnt[1], cnt[2]); |
330 |
putbinary(cv, sizeof(cv), 1, fout); |
331 |
break; |
332 |
default: |
333 |
error(INTERNAL, "botched output format"); |
334 |
} |
335 |
} |
336 |
|
337 |
|
338 |
/* Output modifier values to appropriate stream(s) */ |
339 |
void |
340 |
mod_output(MODCONT *mp) |
341 |
{ |
342 |
STREAMOUT *sop = getostream(mp->outspec, mp->modname, mp->bin0, 0); |
343 |
int j; |
344 |
|
345 |
put_contrib(mp->cbin[0], sop->ofp); |
346 |
if (mp->nbins > 3 && /* minor optimization */ |
347 |
sop == getostream(mp->outspec, mp->modname, mp->bin0+1, 0)) { |
348 |
for (j = 1; j < mp->nbins; j++) |
349 |
put_contrib(mp->cbin[j], sop->ofp); |
350 |
} else { |
351 |
for (j = 1; j < mp->nbins; j++) { |
352 |
sop = getostream(mp->outspec, mp->modname, mp->bin0+j, 0); |
353 |
put_contrib(mp->cbin[j], sop->ofp); |
354 |
} |
355 |
} |
356 |
} |
357 |
|
358 |
|
359 |
/* callback to output newline to ASCII file and/or flush as requested */ |
360 |
static int |
361 |
puteol(const LUENT *e, void *p) |
362 |
{ |
363 |
STREAMOUT *sop = (STREAMOUT *)e->data; |
364 |
|
365 |
if (outfmt == 'a') |
366 |
putc('\n', sop->ofp); |
367 |
if (!waitflush) |
368 |
fflush(sop->ofp); |
369 |
if (ferror(sop->ofp)) { |
370 |
sprintf(errmsg, "write error on file '%s'", e->key); |
371 |
error(SYSTEM, errmsg); |
372 |
} |
373 |
return(0); |
374 |
} |
375 |
|
376 |
|
377 |
/* Terminate record output and flush if time */ |
378 |
void |
379 |
end_record() |
380 |
{ |
381 |
--waitflush; |
382 |
lu_doall(&ofiletab, &puteol, NULL); |
383 |
if (using_stdout & (outfmt == 'a')) |
384 |
putc('\n', stdout); |
385 |
if (!waitflush) { |
386 |
waitflush = (yres > 0) & (xres > 1) ? 0 : xres; |
387 |
if (using_stdout) |
388 |
fflush(stdout); |
389 |
} |
390 |
} |
391 |
|
392 |
/************************** PARTIAL RESULTS RECOVERY ***********************/ |
393 |
|
394 |
/* Get ray contribution from previous file */ |
395 |
static int |
396 |
get_contrib(DCOLOR cnt, FILE *finp) |
397 |
{ |
398 |
COLOR fv; |
399 |
COLR cv; |
400 |
|
401 |
switch (outfmt) { |
402 |
case 'a': |
403 |
return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3); |
404 |
case 'f': |
405 |
if (getbinary(fv, sizeof(fv[0]), 3, finp) != 3) |
406 |
return(0); |
407 |
copycolor(cnt, fv); |
408 |
return(1); |
409 |
case 'd': |
410 |
return(getbinary(cnt, sizeof(cnt[0]), 3, finp) == 3); |
411 |
case 'c': |
412 |
if (getbinary(cv, sizeof(cv), 1, finp) != 1) |
413 |
return(0); |
414 |
colr_color(fv, cv); |
415 |
copycolor(cnt, fv); |
416 |
return(1); |
417 |
default: |
418 |
error(INTERNAL, "botched output format"); |
419 |
} |
420 |
return(0); /* pro forma return */ |
421 |
} |
422 |
|
423 |
|
424 |
/* Close output file opened for input */ |
425 |
static int |
426 |
myclose(const LUENT *e, void *p) |
427 |
{ |
428 |
STREAMOUT *sop = (STREAMOUT *)e->data; |
429 |
|
430 |
if (sop->ofp == NULL) |
431 |
return(0); |
432 |
fclose(sop->ofp); |
433 |
sop->ofp = NULL; |
434 |
return(0); |
435 |
} |
436 |
|
437 |
|
438 |
/* Load previously accumulated values */ |
439 |
void |
440 |
reload_output() |
441 |
{ |
442 |
int i, j; |
443 |
MODCONT *mp; |
444 |
int ofl; |
445 |
char oname[1024]; |
446 |
char *fmode = "rb"; |
447 |
char *outvfmt; |
448 |
LUENT *oent; |
449 |
int xr, yr; |
450 |
STREAMOUT *sop; |
451 |
DCOLOR rgbv; |
452 |
|
453 |
if (outfmt == 'a') |
454 |
fmode = "r"; |
455 |
outvfmt = formstr(outfmt); |
456 |
/* reload modifier values */ |
457 |
for (i = 0; i < nmods; i++) { |
458 |
mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
459 |
if (mp->outspec == NULL) |
460 |
error(USER, "cannot reload from stdout"); |
461 |
if (mp->outspec[0] == '!') |
462 |
error(USER, "cannot reload from command"); |
463 |
for (j = 0; j < mp->nbins; j++) { /* load each modifier bin */ |
464 |
ofl = ofname(oname, mp->outspec, mp->modname, mp->bin0+j); |
465 |
if (ofl < 0) |
466 |
error(USER, "bad output file specification"); |
467 |
oent = lu_find(&ofiletab, oname); |
468 |
if (oent->data == NULL) |
469 |
error(INTERNAL, "unallocated stream in reload_output()"); |
470 |
sop = (STREAMOUT *)oent->data; |
471 |
if (sop->ofp == NULL) { /* open output as input */ |
472 |
sop->ofp = fopen(oname, fmode); |
473 |
if (sop->ofp == NULL) { |
474 |
sprintf(errmsg, "missing reload file '%s'", |
475 |
oname); |
476 |
error(WARNING, errmsg); |
477 |
break; |
478 |
} |
479 |
#ifdef getc_unlocked |
480 |
flockfile(sop->ofp); |
481 |
#endif |
482 |
if (header && checkheader(sop->ofp, outvfmt, NULL) != 1) { |
483 |
sprintf(errmsg, "format mismatch for '%s'", |
484 |
oname); |
485 |
error(USER, errmsg); |
486 |
} |
487 |
if ((sop->reclen == 1) & (sop->xr > 0) & (sop->yr > 0) && |
488 |
(!fscnresolu(&xr, &yr, sop->ofp) || |
489 |
(xr != sop->xr) | |
490 |
(yr != sop->yr))) { |
491 |
sprintf(errmsg, "resolution mismatch for '%s'", |
492 |
oname); |
493 |
error(USER, errmsg); |
494 |
} |
495 |
} |
496 |
/* read in RGB value */ |
497 |
if (!get_contrib(rgbv, sop->ofp)) { |
498 |
if (!j) { |
499 |
fclose(sop->ofp); |
500 |
break; /* ignore empty file */ |
501 |
} |
502 |
if (j < mp->nbins) { |
503 |
sprintf(errmsg, "missing data in '%s'", |
504 |
oname); |
505 |
error(USER, errmsg); |
506 |
} |
507 |
break; |
508 |
} |
509 |
copycolor(mp->cbin[j], rgbv); |
510 |
} |
511 |
} |
512 |
lu_doall(&ofiletab, &myclose, NULL); /* close all files */ |
513 |
} |
514 |
|
515 |
|
516 |
/* Seek on the given output file */ |
517 |
static int |
518 |
myseeko(const LUENT *e, void *p) |
519 |
{ |
520 |
STREAMOUT *sop = (STREAMOUT *)e->data; |
521 |
off_t nbytes = *(off_t *)p; |
522 |
|
523 |
if (sop->reclen > 1) |
524 |
nbytes *= (off_t)sop->reclen; |
525 |
if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) { |
526 |
sprintf(errmsg, "seek error on file '%s'", e->key); |
527 |
error(SYSTEM, errmsg); |
528 |
} |
529 |
return(0); |
530 |
} |
531 |
|
532 |
|
533 |
/* Recover output if possible */ |
534 |
void |
535 |
recover_output() |
536 |
{ |
537 |
off_t lastout = -1; |
538 |
int outvsiz, recsiz; |
539 |
char *outvfmt; |
540 |
int i, j; |
541 |
MODCONT *mp; |
542 |
int ofl; |
543 |
char oname[1024]; |
544 |
LUENT *oent; |
545 |
STREAMOUT *sop; |
546 |
off_t nvals; |
547 |
int xr, yr; |
548 |
|
549 |
switch (outfmt) { |
550 |
case 'a': |
551 |
error(USER, "cannot recover ASCII output"); |
552 |
return; |
553 |
case 'f': |
554 |
outvsiz = sizeof(float)*3; |
555 |
break; |
556 |
case 'd': |
557 |
outvsiz = sizeof(double)*3; |
558 |
break; |
559 |
case 'c': |
560 |
outvsiz = sizeof(COLR); |
561 |
break; |
562 |
default: |
563 |
error(INTERNAL, "botched output format"); |
564 |
return; |
565 |
} |
566 |
outvfmt = formstr(outfmt); |
567 |
/* check modifier outputs */ |
568 |
for (i = 0; i < nmods; i++) { |
569 |
mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
570 |
if (mp->outspec == NULL) |
571 |
error(USER, "cannot recover from stdout"); |
572 |
if (mp->outspec[0] == '!') |
573 |
error(USER, "cannot recover from command"); |
574 |
for (j = 0; j < mp->nbins; j++) { /* check each bin's file */ |
575 |
ofl = ofname(oname, mp->outspec, mp->modname, mp->bin0+j); |
576 |
if (ofl < 0) |
577 |
error(USER, "bad output file specification"); |
578 |
oent = lu_find(&ofiletab, oname); |
579 |
if (oent->data == NULL) |
580 |
error(INTERNAL, "unallocated stream in recover_output()"); |
581 |
sop = (STREAMOUT *)oent->data; |
582 |
if (sop->ofp != NULL) { /* already open? */ |
583 |
if (ofl & OF_BIN) |
584 |
continue; |
585 |
break; |
586 |
} |
587 |
/* open output */ |
588 |
sop->ofp = fopen(oname, "rb+"); |
589 |
if (sop->ofp == NULL) { |
590 |
sprintf(errmsg, "missing recover file '%s'", |
591 |
oname); |
592 |
error(WARNING, errmsg); |
593 |
lastout = 0; |
594 |
break; |
595 |
} |
596 |
nvals = lseek(fileno(sop->ofp), 0, SEEK_END); |
597 |
if (nvals <= 0) { |
598 |
lastout = 0; /* empty output, quit here */ |
599 |
fclose(sop->ofp); |
600 |
break; |
601 |
} |
602 |
recsiz = outvsiz * sop->reclen; |
603 |
|
604 |
lseek(fileno(sop->ofp), 0, SEEK_SET); |
605 |
if (header && checkheader(sop->ofp, outvfmt, NULL) != 1) { |
606 |
sprintf(errmsg, "format mismatch for '%s'", |
607 |
oname); |
608 |
error(USER, errmsg); |
609 |
} |
610 |
if ((sop->reclen == 1) & (sop->xr > 0) & (sop->yr > 0) && |
611 |
(!fscnresolu(&xr, &yr, sop->ofp) || |
612 |
(xr != sop->xr) | |
613 |
(yr != sop->yr))) { |
614 |
sprintf(errmsg, "resolution mismatch for '%s'", |
615 |
oname); |
616 |
error(USER, errmsg); |
617 |
} |
618 |
nvals = (nvals - (off_t)ftell(sop->ofp)) / recsiz; |
619 |
if ((lastout < 0) | (nvals < lastout)) |
620 |
lastout = nvals; |
621 |
if (!(ofl & OF_BIN)) |
622 |
break; /* no bin separation */ |
623 |
} |
624 |
if (!lastout) { /* empty output */ |
625 |
error(WARNING, "no previous data to recover"); |
626 |
/* reclose all outputs */ |
627 |
lu_doall(&ofiletab, &myclose, NULL); |
628 |
return; |
629 |
} |
630 |
} |
631 |
if (lastout < 0) { |
632 |
error(WARNING, "no output files to recover"); |
633 |
return; |
634 |
} |
635 |
if (raysleft && lastout >= raysleft/accumulate) { |
636 |
error(WARNING, "output appears to be complete"); |
637 |
/* XXX should read & discard input? */ |
638 |
quit(0); |
639 |
} |
640 |
/* seek on all files */ |
641 |
nvals = lastout * outvsiz; |
642 |
lu_doall(&ofiletab, &myseeko, &nvals); |
643 |
/* skip repeated input */ |
644 |
lastout *= accumulate; |
645 |
for (nvals = 0; nvals < lastout; nvals++) { |
646 |
FVECT vdummy; |
647 |
if (getvec(vdummy) < 0 || getvec(vdummy) < 0) |
648 |
error(USER, "unexpected EOF on input"); |
649 |
} |
650 |
lastray = lastdone = (RNUMBER)lastout; |
651 |
if (raysleft) |
652 |
raysleft -= lastray; |
653 |
} |