| 20 |
|
#define vfork fork |
| 21 |
|
#endif |
| 22 |
|
|
| 23 |
< |
#define MAXSBUF 1023980 /* maximum total size of scanline buffer */ |
| 23 |
> |
#define MAXSBUF 786432 /* maximum total size of scanline buffer */ |
| 24 |
|
#define HSIZE 317 /* size of scanline hash table */ |
| 25 |
|
#define NRETIRE 16 /* number of scanlines to retire at once */ |
| 26 |
|
|
| 49 |
|
|
| 50 |
|
static long ncall = 0L; /* number of calls to getpictscan */ |
| 51 |
|
static long nread = 0L; /* number of scanlines read */ |
| 52 |
+ |
static long nrecl = 0L; /* number of scanlines reclaimed */ |
| 53 |
|
|
| 54 |
+ |
static int wrongformat = 0; |
| 55 |
+ |
|
| 56 |
|
SCAN *scanretire(); |
| 57 |
|
|
| 58 |
|
extern long ftell(); |
| 78 |
|
if (sl->y == y) { /* reclaim */ |
| 79 |
|
sl->next = hashtab[hi]; |
| 80 |
|
hashtab[hi] = sl; |
| 81 |
+ |
nrecl++; |
| 82 |
|
} |
| 83 |
|
return(sl); |
| 84 |
|
} |
| 142 |
|
{ |
| 143 |
|
static long lastcall = 0L; /* ncall at last report */ |
| 144 |
|
static long lastread = 0L; /* nread at last report */ |
| 145 |
+ |
static long lastrecl = 0L; /* nrecl at last report */ |
| 146 |
|
|
| 147 |
|
if (ncall == lastcall) |
| 148 |
|
return; |
| 149 |
< |
fprintf(stderr, "%s: %ld scanlines read in %ld calls\n", |
| 150 |
< |
progname, nread-lastread, ncall-lastcall); |
| 149 |
> |
fprintf(stderr, "%s: %ld scanlines read (%ld reclaimed) in %ld calls\n", |
| 150 |
> |
progname, nread-lastread, nrecl-lastrecl, ncall-lastcall); |
| 151 |
|
lastcall = ncall; |
| 152 |
|
lastread = nread; |
| 153 |
+ |
lastrecl = nrecl; |
| 154 |
|
} |
| 155 |
|
#endif |
| 156 |
|
|
| 221 |
|
#endif |
| 222 |
|
n = 0; |
| 223 |
|
for (vh = -hsize; vh <= hsize; vh++) { |
| 224 |
< |
if (compdir(dir, vh, vv) < 0) { /* off viewable region */ |
| 224 |
> |
if (compdir(dir, vh, vv) < 0) { /* not in view */ |
| 225 |
|
vb[vh+hsize] = -1.0; |
| 226 |
|
continue; |
| 227 |
|
} |
| 287 |
|
getexpos(s) /* get exposure from header line */ |
| 288 |
|
char *s; |
| 289 |
|
{ |
| 290 |
+ |
char fmt[32]; |
| 291 |
+ |
|
| 292 |
|
if (isexpos(s)) |
| 293 |
|
exposure *= exposval(s); |
| 294 |
+ |
else if (isformat(s)) { |
| 295 |
+ |
formatval(fmt, s); |
| 296 |
+ |
wrongformat = strcmp(fmt, COLRFMT); |
| 297 |
+ |
} |
| 298 |
|
} |
| 299 |
|
|
| 300 |
|
|
| 301 |
|
open_pict(fn) /* open picture file */ |
| 302 |
|
char *fn; |
| 303 |
|
{ |
| 292 |
– |
register int i; |
| 293 |
– |
|
| 304 |
|
if ((pictfp = fopen(fn, "r")) == NULL) { |
| 305 |
|
fprintf("%s: cannot open\n", fn); |
| 306 |
|
exit(1); |
| 307 |
|
} |
| 308 |
|
exposure = 1.0; |
| 309 |
< |
getheader(pictfp, getexpos); |
| 310 |
< |
if (fgetresolu(&pxsiz, &pysiz, pictfp) != (YMAJOR|YDECR)) { |
| 311 |
< |
fprintf("%s: bad picture resolution\n", fn); |
| 309 |
> |
getheader(pictfp, getexpos, NULL); |
| 310 |
> |
if (wrongformat || |
| 311 |
> |
fgetresolu(&pxsiz, &pysiz, pictfp) != (YMAJOR|YDECR)) { |
| 312 |
> |
fprintf("%s: bad picture format\n", fn); |
| 313 |
|
exit(1); |
| 314 |
|
} |
| 315 |
|
initscans(); |
| 318 |
|
|
| 319 |
|
close_pict() /* done with picture */ |
| 320 |
|
{ |
| 310 |
– |
register int i; |
| 311 |
– |
|
| 321 |
|
if (pictfp == NULL) |
| 322 |
|
return; |
| 323 |
|
fclose(pictfp); |
| 342 |
|
dup2(p0[0], 0); |
| 343 |
|
close(p0[0]); |
| 344 |
|
} |
| 345 |
< |
if (p1[1] != 0) { /* connect p1 to stdout */ |
| 345 |
> |
if (p1[1] != 1) { /* connect p1 to stdout */ |
| 346 |
|
dup2(p1[1], 1); |
| 347 |
|
close(p1[1]); |
| 348 |
|
} |
| 419 |
|
scanretire() /* retire old scanlines to free list */ |
| 420 |
|
{ |
| 421 |
|
SCAN *sold[NRETIRE]; |
| 413 |
– |
SCAN head; |
| 422 |
|
int n; |
| 423 |
|
int h; |
| 424 |
|
register SCAN *sl; |
| 425 |
|
register int i; |
| 426 |
|
/* grab the NRETIRE oldest scanlines */ |
| 427 |
|
sold[n = 0] = NULL; |
| 428 |
< |
for (h = 0; h < HSIZE; h++) { |
| 429 |
< |
head.next = hashtab[h]; |
| 430 |
< |
sl = &head; |
| 431 |
< |
while (sl->next != NULL) { |
| 424 |
< |
for (i = n; i && sold[i-1]->lused > sl->next->lused; i--) |
| 425 |
< |
if (i == NRETIRE) { /* reallocate */ |
| 426 |
< |
register int oh; |
| 427 |
< |
oh = shash(sold[NRETIRE-1]->y); |
| 428 |
< |
sold[NRETIRE-1]->next = hashtab[oh]; |
| 429 |
< |
if (h == oh) { |
| 430 |
< |
head.next = sold[NRETIRE-1]; |
| 431 |
< |
if (sl == &head) |
| 432 |
< |
sl = head.next; |
| 433 |
< |
} else |
| 434 |
< |
hashtab[oh] = sold[NRETIRE-1]; |
| 435 |
< |
} else /* else bubble up */ |
| 428 |
> |
for (h = 0; h < HSIZE; h++) |
| 429 |
> |
for (sl = hashtab[h]; sl != NULL; sl = sl->next) { |
| 430 |
> |
for (i = n; i && sold[i-1]->lused > sl->lused; i--) |
| 431 |
> |
if (i < NRETIRE) |
| 432 |
|
sold[i] = sold[i-1]; |
| 433 |
|
if (i < NRETIRE) { |
| 434 |
< |
sold[i] = sl->next; |
| 439 |
< |
sl->next = sl->next->next; |
| 434 |
> |
sold[i] = sl; |
| 435 |
|
if (n < NRETIRE) /* grow list */ |
| 436 |
|
n++; |
| 437 |
< |
} else |
| 437 |
> |
} |
| 438 |
> |
} |
| 439 |
> |
/* put scanlines into free list */ |
| 440 |
> |
for (i = 0; i < n; i++) { |
| 441 |
> |
h = shash(sold[i]->y); |
| 442 |
> |
sl = hashtab[h]; |
| 443 |
> |
if (sl == sold[i]) |
| 444 |
> |
hashtab[h] = sl->next; |
| 445 |
> |
else { |
| 446 |
> |
while (sl->next != sold[i]) /* IS in list */ |
| 447 |
|
sl = sl->next; |
| 448 |
+ |
sl->next = sold[i]->next; |
| 449 |
|
} |
| 450 |
< |
hashtab[h] = head.next; |
| 450 |
> |
if (i > 0) { /* save oldest as return value */ |
| 451 |
> |
sold[i]->next = freelist; |
| 452 |
> |
freelist = sold[i]; |
| 453 |
> |
} |
| 454 |
|
} |
| 447 |
– |
/* put scanlines into free list */ |
| 448 |
– |
for (i = 1; i < n; i++) { |
| 449 |
– |
sold[i]->next = freelist; |
| 450 |
– |
freelist = sold[i]; |
| 451 |
– |
} |
| 455 |
|
return(sold[0]); |
| 456 |
|
} |
| 457 |
|
|
| 477 |
|
/* allocate scanline buffers */ |
| 478 |
|
scansize = sizeof(SCAN) + pxsiz*sizeof(COLR); |
| 479 |
|
#ifdef ALIGN |
| 480 |
< |
scansize = scansize+(sizeof(ALIGN)-1)) & ~(sizeof(ALIGN)-1); |
| 480 |
> |
scansize = scansize+(sizeof(ALIGN)-1) & ~(sizeof(ALIGN)-1); |
| 481 |
|
#endif |
| 482 |
|
i = MAXSBUF / scansize; /* compute number to allocate */ |
| 483 |
|
if (i > HSIZE) |
