10 |
|
|
11 |
|
#include "standard.h" |
12 |
|
#include <fcntl.h> |
13 |
+ |
|
14 |
+ |
#ifndef F_SETLKW |
15 |
+ |
|
16 |
+ |
main(argc, argv) |
17 |
+ |
int argc; |
18 |
+ |
char *argv[]; |
19 |
+ |
{ |
20 |
+ |
fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
21 |
+ |
exit(1); |
22 |
+ |
} |
23 |
+ |
|
24 |
+ |
#else |
25 |
+ |
|
26 |
+ |
#include <signal.h> |
27 |
|
#include "color.h" |
28 |
|
#include "view.h" |
29 |
|
#include "resolu.h" |
30 |
|
|
31 |
+ |
#ifndef NFS |
32 |
+ |
#define NFS 1 |
33 |
+ |
#endif |
34 |
+ |
/* set the following to 0 to forgo forking */ |
35 |
+ |
#ifndef MAXFORK |
36 |
+ |
#if NFS |
37 |
+ |
#define MAXFORK 3 /* allotment of duped processes */ |
38 |
+ |
#else |
39 |
+ |
#define MAXFORK 0 |
40 |
+ |
#endif |
41 |
+ |
#endif |
42 |
+ |
|
43 |
|
/* rpict command */ |
44 |
|
char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
45 |
|
int rpargc = 9; |
46 |
|
int rpd[3]; |
47 |
|
FILE *torp, *fromrp; |
48 |
< |
COLR *scanline; |
48 |
> |
COLR *pbuf; |
49 |
|
/* our view parameters */ |
50 |
|
VIEW ourview = STDVIEW; |
51 |
|
double pixaspect = 1.0; |
54 |
|
char *outfile = NULL; |
55 |
|
int outfd; |
56 |
|
long scanorig; |
57 |
+ |
int syncfd = -1; /* lock file descriptor */ |
58 |
+ |
int nforked = 0; |
59 |
|
|
60 |
|
char *progname; |
61 |
|
int verbose = 0; |
62 |
|
|
63 |
|
extern long lseek(), ftell(); |
64 |
|
|
65 |
+ |
int gotalrm = 0; |
66 |
+ |
int onalrm() { gotalrm++; } |
67 |
|
|
68 |
+ |
|
69 |
|
main(argc, argv) |
70 |
|
int argc; |
71 |
|
char *argv[]; |
119 |
|
break; |
120 |
|
vmult = atoi(argv[++i]); |
121 |
|
continue; |
122 |
+ |
case 'F': /* syncronization file */ |
123 |
+ |
if (argv[i][2]) |
124 |
+ |
break; |
125 |
+ |
if ((syncfd = open(argv[++i], |
126 |
+ |
O_RDWR|O_CREAT, 0666)) < 0) { |
127 |
+ |
fprintf(stderr, "%s: cannot open\n", |
128 |
+ |
argv[i]); |
129 |
+ |
exit(1); |
130 |
+ |
} |
131 |
+ |
continue; |
132 |
+ |
case 'z': /* z-file ist verbotten */ |
133 |
+ |
fprintf(stderr, "%s: -z option not allowed\n", |
134 |
+ |
argv[0]); |
135 |
+ |
exit(1); |
136 |
|
case 'o': /* output file */ |
137 |
|
if (argv[i][2]) |
138 |
|
break; |
148 |
|
} |
149 |
|
init(argc, argv); |
150 |
|
rpiece(); |
151 |
< |
rval = cleanup(); |
107 |
< |
exit(rval); |
151 |
> |
exit(cleanup(0)); |
152 |
|
} |
153 |
|
|
154 |
|
|
165 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
166 |
|
exit(1); |
167 |
|
} |
168 |
+ |
if (syncfd != -1) { |
169 |
+ |
char buf[32]; |
170 |
+ |
buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
171 |
+ |
sscanf(buf, "%d %d", &hmult, &vmult); |
172 |
+ |
} |
173 |
|
normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
174 |
|
/* open output file */ |
175 |
|
if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
186 |
|
putc('\n', fp); |
187 |
|
fprtresolu(hres*hmult, vres*vmult, fp); |
188 |
|
} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
140 |
– |
sleep(30); /* wait for header */ |
189 |
|
if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
190 |
|
goto filerr; |
191 |
< |
getheader(fp, NULL); /* skip header */ |
192 |
< |
if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
191 |
> |
getheader(fp, NULL, NULL); /* skip header */ |
192 |
> |
if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
193 |
|
hr != hres*hmult || vr != vres*vmult) { |
194 |
< |
fprintf(stderr, "%s: picture resolution mismatch\n", |
195 |
< |
outfile); |
194 |
> |
fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
195 |
> |
progname, outfile); |
196 |
|
exit(1); |
197 |
|
} |
198 |
|
} else { |
199 |
< |
fprintf(stderr, "%s: cannot open\n", outfile); |
199 |
> |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
200 |
> |
progname, outfile); |
201 |
|
exit(1); |
202 |
|
} |
203 |
|
scanorig = ftell(fp); /* record position of first scanline */ |
204 |
|
if (fclose(fp) == -1) /* done with stream i/o */ |
205 |
|
goto filerr; |
206 |
+ |
#if NFS |
207 |
+ |
sync(); /* flush NFS buffers */ |
208 |
+ |
#endif |
209 |
|
/* start rpict process */ |
210 |
|
if (open_process(rpd, rpargv) <= 0) { |
211 |
|
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
217 |
|
progname, rpargv[0]); |
218 |
|
exit(1); |
219 |
|
} |
220 |
< |
if ((scanline = (COLR *)malloc(hres*sizeof(COLR))) == NULL) { |
220 |
> |
if ((pbuf = (COLR *)malloc(hres*vres*sizeof(COLR))) == NULL) { |
221 |
|
fprintf(stderr, "%s: out of memory\n", progname); |
222 |
|
exit(1); |
223 |
|
} |
224 |
+ |
signal(SIGALRM, onalrm); |
225 |
|
return; |
226 |
|
filerr: |
227 |
< |
fprintf(stderr, "%s: file i/o error\n", outfile); |
227 |
> |
fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
228 |
|
exit(1); |
229 |
|
} |
230 |
|
|
231 |
|
|
232 |
|
int |
233 |
< |
cleanup() /* close rpict process and clean up */ |
233 |
> |
nextpiece(xp, yp) /* get next piece assignment */ |
234 |
> |
int *xp, *yp; |
235 |
|
{ |
236 |
< |
register int rpstat; |
236 |
> |
extern char *fgets(); |
237 |
> |
struct flock fls; |
238 |
> |
char buf[64]; |
239 |
|
|
240 |
< |
free((char *)scanline); |
240 |
> |
if (gotalrm) /* someone wants us to quit */ |
241 |
> |
return(0); |
242 |
> |
if (syncfd != -1) { /* use sync file */ |
243 |
> |
fls.l_type = F_WRLCK; /* gain exclusive access */ |
244 |
> |
fls.l_whence = 0; |
245 |
> |
fls.l_start = 0L; |
246 |
> |
fls.l_len = 0L; |
247 |
> |
fcntl(syncfd, F_SETLKW, &fls); |
248 |
> |
lseek(syncfd, 0L, 0); |
249 |
> |
buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
250 |
> |
if (sscanf(buf, "%*d %*d %d %d", xp, yp) < 2) { |
251 |
> |
*xp = hmult-1; |
252 |
> |
*yp = vmult; |
253 |
> |
} |
254 |
> |
if (--(*yp) < 0) { /* decrement position */ |
255 |
> |
*yp = vmult-1; |
256 |
> |
if (--(*xp) < 0) { /* all done! */ |
257 |
> |
close(syncfd); |
258 |
> |
return(0); |
259 |
> |
} |
260 |
> |
} |
261 |
> |
sprintf(buf, "%d %d\n%d %d\n", hmult, vmult, *xp, *yp); |
262 |
> |
lseek(syncfd, 0L, 0); /* write new position */ |
263 |
> |
write(syncfd, buf, strlen(buf)); |
264 |
> |
fls.l_type = F_UNLCK; /* release sync file */ |
265 |
> |
fcntl(syncfd, F_SETLKW, &fls); |
266 |
> |
return(1); |
267 |
> |
} |
268 |
> |
if (fgets(buf, sizeof(buf), stdin) == NULL) /* use stdin */ |
269 |
> |
return(0); |
270 |
> |
if (sscanf(buf, "%d %d", xp, yp) == 2) |
271 |
> |
return(1); |
272 |
> |
fprintf(stderr, "%s: input format error\n", progname); |
273 |
> |
exit(cleanup(1)); |
274 |
> |
} |
275 |
> |
|
276 |
> |
|
277 |
> |
int |
278 |
> |
cleanup(rstat) /* close rpict process and clean up */ |
279 |
> |
int rstat; |
280 |
> |
{ |
281 |
> |
int status; |
282 |
> |
|
283 |
> |
free((char *)pbuf); |
284 |
|
fclose(torp); |
285 |
|
fclose(fromrp); |
286 |
< |
rpstat = close_process(rpd); |
287 |
< |
if (rpstat == -1) |
288 |
< |
rpstat = 0; |
289 |
< |
return(rpstat); |
286 |
> |
while (wait(&status) != -1) |
287 |
> |
if (rstat == 0) |
288 |
> |
rstat = status>>8 & 0xff; |
289 |
> |
return(rstat); |
290 |
|
} |
291 |
|
|
292 |
|
|
293 |
|
rpiece() /* render picture piece by piece */ |
294 |
|
{ |
196 |
– |
extern char *gets(), *strcat(); |
295 |
|
VIEW pview; |
198 |
– |
char buf[48]; |
296 |
|
int xorg, yorg; |
297 |
< |
|
298 |
< |
while (gets(buf) != NULL) { |
299 |
< |
if (sscanf(buf, "%d %d", &xorg, &yorg) != 2) { |
300 |
< |
fprintf(stderr, "%s: input format error\n", progname); |
301 |
< |
exit(1); |
302 |
< |
} |
303 |
< |
copystruct(&pview, &ourview); /* compute view for piece */ |
304 |
< |
switch (ourview.type) { |
305 |
< |
case VT_PER: |
306 |
< |
pview.horiz = 2.*180./PI*atan( |
307 |
< |
tan(PI/180./2.*ourview.horiz)/hmult ); |
308 |
< |
pview.vert = 2.*180./PI*atan( |
309 |
< |
tan(PI/180./2.*ourview.vert)/vmult ); |
310 |
< |
break; |
311 |
< |
case VT_PAR: |
312 |
< |
case VT_ANG: |
313 |
< |
pview.horiz = ourview.horiz / hmult; |
314 |
< |
pview.vert = ourview.vert / vmult; |
315 |
< |
break; |
316 |
< |
case VT_HEM: |
317 |
< |
pview.horiz = 2.*180./PI*asin( |
318 |
< |
sin(PI/180./2.*ourview.horiz)/hmult ); |
319 |
< |
pview.vert = 2.*180./PI*asin( |
320 |
< |
sin(PI/180./2.*ourview.vert)/vmult ); |
321 |
< |
break; |
322 |
< |
default: |
323 |
< |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
324 |
< |
progname, ourview.type); |
325 |
< |
exit(1); |
229 |
< |
} |
230 |
< |
pview.hoff += xorg - 0.5*(hmult-1); |
231 |
< |
pview.voff += yorg - 0.5*(vmult-1); |
297 |
> |
/* compute view parameters */ |
298 |
> |
copystruct(&pview, &ourview); |
299 |
> |
switch (ourview.type) { |
300 |
> |
case VT_PER: |
301 |
> |
pview.horiz = 2.*180./PI*atan( |
302 |
> |
tan(PI/180./2.*ourview.horiz)/hmult ); |
303 |
> |
pview.vert = 2.*180./PI*atan( |
304 |
> |
tan(PI/180./2.*ourview.vert)/vmult ); |
305 |
> |
break; |
306 |
> |
case VT_PAR: |
307 |
> |
case VT_ANG: |
308 |
> |
pview.horiz = ourview.horiz / hmult; |
309 |
> |
pview.vert = ourview.vert / vmult; |
310 |
> |
break; |
311 |
> |
case VT_HEM: |
312 |
> |
pview.horiz = 2.*180./PI*asin( |
313 |
> |
sin(PI/180./2.*ourview.horiz)/hmult ); |
314 |
> |
pview.vert = 2.*180./PI*asin( |
315 |
> |
sin(PI/180./2.*ourview.vert)/vmult ); |
316 |
> |
break; |
317 |
> |
default: |
318 |
> |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
319 |
> |
progname, ourview.type); |
320 |
> |
exit(cleanup(1)); |
321 |
> |
} |
322 |
> |
/* render each piece */ |
323 |
> |
while (nextpiece(&xorg, &yorg)) { |
324 |
> |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
325 |
> |
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
326 |
|
fputs(VIEWSTR, torp); |
327 |
|
fprintview(&pview, torp); |
328 |
|
putc('\n', torp); |
329 |
< |
fflush(torp); /* assign piece to rpict */ |
329 |
> |
fflush(torp); /* assigns piece to rpict */ |
330 |
|
putpiece(xorg, yorg); /* place piece in output */ |
331 |
|
if (verbose) { /* notify caller */ |
332 |
< |
strcat(buf, " done\n"); |
333 |
< |
writebuf(fileno(stdout), buf, strlen(buf)); |
332 |
> |
printf("%d %d done\n", xorg, yorg); |
333 |
> |
fflush(stdout); |
334 |
|
} |
335 |
|
} |
336 |
|
} |
337 |
|
|
338 |
|
|
339 |
+ |
int |
340 |
|
putpiece(xpos, ypos) /* get next piece from rpict */ |
341 |
|
int xpos, ypos; |
342 |
|
{ |
343 |
+ |
struct flock fls; |
344 |
+ |
int pid, status; |
345 |
|
int hr, vr; |
346 |
< |
int y; |
347 |
< |
|
348 |
< |
getheader(fromrp, NULL); /* discard header info. */ |
349 |
< |
if (fscnresolu(&hr, &vr, fromrp) < 0 || /* check resolution */ |
350 |
< |
hr != hres || vr != vres) { |
346 |
> |
register int y; |
347 |
> |
/* check bounds */ |
348 |
> |
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
349 |
> |
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
350 |
> |
progname, xpos, ypos); |
351 |
> |
exit(cleanup(1)); |
352 |
> |
} |
353 |
> |
/* check header from rpict */ |
354 |
> |
getheader(fromrp, NULL, NULL); |
355 |
> |
if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
356 |
|
fprintf(stderr, "%s: resolution mismatch from %s\n", |
357 |
|
progname, rpargv[0]); |
358 |
< |
exit(1); |
358 |
> |
exit(cleanup(1)); |
359 |
|
} |
360 |
< |
for (y = 0; y < vr; y++) { /* transfer scanlines */ |
361 |
< |
if (freadcolrs(scanline, hr, fromrp) < 0) { |
360 |
> |
/* load new piece into buffer */ |
361 |
> |
for (y = 0; y < vr; y++) |
362 |
> |
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
363 |
|
fprintf(stderr, "%s: read error from %s\n", |
364 |
|
progname, rpargv[0]); |
365 |
< |
exit(1); |
365 |
> |
exit(cleanup(1)); |
366 |
|
} |
367 |
< |
if ((y == 0 || hmult != 1) && lseek(outfd, |
368 |
< |
scanorig+((long)((vmult-1-ypos)*vres+y)*hmult*hres+xpos*hres)*sizeof(COLR), |
369 |
< |
0) == -1) { |
370 |
< |
fprintf(stderr, "%s: seek error\n", outfile); |
371 |
< |
exit(1); |
367 |
> |
#if MAXFORK |
368 |
> |
/* fork so we don't slow rpict down */ |
369 |
> |
if ((pid = fork()) > 0) { |
370 |
> |
if (++nforked >= MAXFORK) { |
371 |
> |
wait(&status); /* reap a child */ |
372 |
> |
if (status) |
373 |
> |
exit(cleanup(status>>8 & 0xff)); |
374 |
> |
nforked--; |
375 |
|
} |
376 |
< |
if (writebuf(outfd, (char *)scanline, hr*sizeof(COLR)) != |
377 |
< |
hr*sizeof(COLR)) { |
378 |
< |
fprintf(stderr, "%s: write error\n", outfile); |
379 |
< |
exit(1); |
376 |
> |
return(pid); |
377 |
> |
} |
378 |
> |
#else |
379 |
> |
pid = -1; /* no forking */ |
380 |
> |
#endif |
381 |
> |
fls.l_len = (long)vres*hmult*hres*sizeof(COLR); |
382 |
> |
fls.l_start = scanorig + (vmult-1-ypos)*fls.l_len; |
383 |
> |
#if NFS |
384 |
> |
/* lock file section so NFS doesn't mess up */ |
385 |
> |
fls.l_whence = 0; |
386 |
> |
fls.l_type = F_WRLCK; |
387 |
> |
fcntl(outfd, F_SETLKW, &fls); |
388 |
> |
#endif |
389 |
> |
/* write new piece to file */ |
390 |
> |
if (lseek(outfd, fls.l_start+(long)xpos*hres*sizeof(COLR), 0) == -1) |
391 |
> |
goto seekerr; |
392 |
> |
if (hmult == 1) { |
393 |
> |
if (writebuf(outfd, (char *)pbuf, |
394 |
> |
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
395 |
> |
goto writerr; |
396 |
> |
} else |
397 |
> |
for (y = 0; y < vr; y++) { |
398 |
> |
if (writebuf(outfd, (char *)(pbuf+y*hr), |
399 |
> |
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
400 |
> |
goto writerr; |
401 |
> |
if (y < vr-1 && lseek(outfd, |
402 |
> |
(long)(hmult-1)*hr*sizeof(COLR), |
403 |
> |
1) == -1) |
404 |
> |
goto seekerr; |
405 |
|
} |
406 |
+ |
if (pid == -1) { /* fork failed */ |
407 |
+ |
#if NFS |
408 |
+ |
fls.l_type = F_UNLCK; /* release lock */ |
409 |
+ |
fcntl(outfd, F_SETLKW, &fls); |
410 |
+ |
#endif |
411 |
+ |
return(0); |
412 |
|
} |
413 |
+ |
_exit(0); /* else exit child process (releasing lock) */ |
414 |
+ |
seekerr: |
415 |
+ |
fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile); |
416 |
+ |
_exit(1); |
417 |
+ |
writerr: |
418 |
+ |
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
419 |
+ |
_exit(1); |
420 |
|
} |
421 |
+ |
|
422 |
+ |
#endif |