119 |
|
Display *thedisplay; |
120 |
|
Atom closedownAtom, wmProtocolsAtom; |
121 |
|
|
122 |
< |
int noop() {} |
122 |
> |
int sigrecv; |
123 |
|
|
124 |
+ |
int onsig() { sigrecv++; } |
125 |
|
|
126 |
+ |
|
127 |
|
main(argc, argv) |
128 |
|
int argc; |
129 |
|
char *argv[]; |
181 |
|
if (i > argc) |
182 |
|
goto userr; |
183 |
|
while (i < argc-1) { |
184 |
+ |
sigrecv = 0; |
185 |
+ |
signal(SIGCONT, onsig); |
186 |
|
if ((pid=fork()) == 0) { /* a child for each picture */ |
187 |
|
parent = -1; |
188 |
|
break; |
190 |
|
if (pid < 0) |
191 |
|
quiterr("fork failed"); |
192 |
|
parent++; |
193 |
< |
signal(SIGCONT, noop); |
194 |
< |
pause(); /* wait for wake-up call */ |
193 |
> |
while (!sigrecv) |
194 |
> |
pause(); /* wait for wake-up call */ |
195 |
|
i++; |
196 |
|
} |
197 |
|
if (i < argc) { /* open picture file */ |
198 |
|
fname = argv[i]; |
199 |
|
fin = fopen(fname, "r"); |
200 |
< |
if (fin == NULL) { |
201 |
< |
sprintf(errmsg, "cannot open file \"%s\"", fname); |
198 |
< |
quiterr(errmsg); |
199 |
< |
} |
200 |
> |
if (fin == NULL) |
201 |
> |
quiterr("cannot open picture file"); |
202 |
|
} |
203 |
|
/* get header */ |
204 |
|
getheader(fin, headline, NULL); |
215 |
|
|
216 |
|
init(argc, argv); /* get file and open window */ |
217 |
|
|
218 |
< |
if (parent < 0) |
218 |
> |
if (parent < 0) { |
219 |
|
kill(getppid(), SIGCONT); /* signal parent if child */ |
220 |
< |
|
220 |
> |
sigrecv--; |
221 |
> |
} |
222 |
|
for ( ; ; ) |
223 |
|
getevent(); /* main loop */ |
224 |
|
userr: |
314 |
|
quiterr("cannot create window"); |
315 |
|
width = xmax; |
316 |
|
height = ymax; |
317 |
< |
xgcv.foreground = ourblack; |
315 |
< |
xgcv.background = ourwhite; |
317 |
> |
/* prepare graphics drawing context */ |
318 |
|
if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
319 |
|
quiterr("cannot get font"); |
320 |
+ |
xgcv.foreground = ourblack; |
321 |
+ |
xgcv.background = ourwhite; |
322 |
|
ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
323 |
|
GCFont, &xgcv); |
324 |
|
xgcv.function = GXinvert; |
354 |
|
quiterr(err) /* print message and exit */ |
355 |
|
char *err; |
356 |
|
{ |
357 |
< |
if (err != NULL) |
357 |
> |
register int es; |
358 |
> |
int cs; |
359 |
> |
|
360 |
> |
if (es = err != NULL) |
361 |
|
fprintf(stderr, "%s: %s: %s\n", progname, |
362 |
|
fname==NULL?"<stdin>":fname, err); |
363 |
< |
if (wind) { |
363 |
> |
if (parent > 0 & wind != 0) { |
364 |
|
XDestroyWindow(thedisplay, wind); |
365 |
|
XFlush(thedisplay); |
366 |
< |
} |
367 |
< |
while (parent > 0 && wait(0) != -1) /* wait for any children */ |
366 |
> |
} else if (parent < 0 & sigrecv == 0) |
367 |
> |
kill(getppid(), SIGCONT); |
368 |
> |
while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
369 |
> |
if (es == 0) |
370 |
> |
es = cs>>8 & 0xff; |
371 |
|
parent--; |
372 |
< |
exit(err != NULL); |
372 |
> |
} |
373 |
> |
exit(es); |
374 |
|
} |
375 |
|
|
376 |
|
|
672 |
|
case '@': /* adaptation level */ |
673 |
|
if (avgbox(cval) == -1) |
674 |
|
return(-1); |
675 |
< |
comp = com=='@' |
676 |
< |
? 106./pow(1.219+pow(luminance(cval)/exposure,.4),2.5)/exposure |
677 |
< |
: .5/bright(cval) ; |
675 |
> |
comp = bright(cval); |
676 |
> |
if (comp < 1e-20) { |
677 |
> |
XBell(thedisplay, 0); |
678 |
> |
return(-1); |
679 |
> |
} |
680 |
> |
if (com == '@') |
681 |
> |
comp = 106./exposure/ |
682 |
> |
pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5); |
683 |
> |
else |
684 |
> |
comp = .5/comp; |
685 |
|
comp = log(comp)/.69315 - scale; |
686 |
|
n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
687 |
|
if (n == 0) |
988 |
|
getmapped() /* get color-mapped data */ |
989 |
|
{ |
990 |
|
int y; |
991 |
+ |
/* make sure we can do it first */ |
992 |
+ |
if (fname == NULL) |
993 |
+ |
quiterr("cannot map colors from standard input"); |
994 |
|
/* set gamma correction */ |
995 |
|
setcolrgam(gamcor); |
996 |
|
/* make histogram */ |
997 |
|
new_histo(); |
998 |
|
for (y = 0; y < ymax; y++) { |
999 |
|
if (getscan(y) < 0) |
1000 |
< |
quiterr("seek error in getmapped"); |
1000 |
> |
break; |
1001 |
|
add2icon(y, scanline); |
1002 |
|
if (scale) |
1003 |
|
shiftcolrs(scanline, xmax, scale); |
1008 |
|
if (!new_clrtab(maxcolors)) |
1009 |
|
quiterr("cannot create color map"); |
1010 |
|
for (y = 0; y < ymax; y++) { |
1011 |
< |
if (getscan(y) < 0) |
991 |
< |
quiterr("seek error in getmapped"); |
1011 |
> |
getscan(y); |
1012 |
|
if (scale) |
1013 |
|
shiftcolrs(scanline, xmax, scale); |
1014 |
|
colrs_gambs(scanline, xmax); |
1051 |
|
getscan(y) |
1052 |
|
int y; |
1053 |
|
{ |
1054 |
+ |
static int trunced = -1; /* truncated file? */ |
1055 |
+ |
skipit: |
1056 |
+ |
if (trunced >= 0 && y >= trunced) { |
1057 |
+ |
bzero(scanline, xmax*sizeof(COLR)); |
1058 |
+ |
return(-1); |
1059 |
+ |
} |
1060 |
|
if (y != cury) { |
1061 |
|
if (scanpos == NULL || scanpos[y] == -1) |
1062 |
|
return(-1); |
1066 |
|
} else if (scanpos != NULL && scanpos[y] == -1) |
1067 |
|
scanpos[y] = ftell(fin); |
1068 |
|
|
1069 |
< |
if (freadcolrs(scanline, xmax, fin) < 0) |
1070 |
< |
quiterr("read error"); |
1071 |
< |
|
1069 |
> |
if (freadcolrs(scanline, xmax, fin) < 0) { |
1070 |
> |
fprintf(stderr, "%s: %s: unfinished picture\n", |
1071 |
> |
progname, fname==NULL?"<stdin>":fname); |
1072 |
> |
trunced = y; |
1073 |
> |
goto skipit; |
1074 |
> |
} |
1075 |
|
cury++; |
1076 |
|
return(0); |
1077 |
|
} |