| 38 |
|
#define BORWIDTH 5 /* border width */ |
| 39 |
|
#define BARHEIGHT 25 /* menu bar size */ |
| 40 |
|
|
| 41 |
< |
double gamcor = 2.0; /* gamcor correction */ |
| 41 |
> |
double gamcor = 2.0; /* gamma correction */ |
| 42 |
|
|
| 43 |
< |
XRASTER ourras; /* our stored raster image */ |
| 43 |
> |
XRASTER *ourras = NULL; /* our stored raster image */ |
| 44 |
|
|
| 45 |
|
int dither = 1; /* dither colors? */ |
| 46 |
|
int fast = 0; /* keep picture in Pixmap? */ |
| 51 |
|
int maxcolors = 0; /* maximum colors */ |
| 52 |
|
int greyscale = 0; /* in grey */ |
| 53 |
|
|
| 54 |
+ |
int scale = 0; /* scalefactor; power of two */ |
| 55 |
+ |
|
| 56 |
|
int xoff = 0; /* x image offset */ |
| 57 |
|
int yoff = 0; /* y image offset */ |
| 58 |
|
|
| 84 |
|
|
| 85 |
|
extern char *malloc(), *calloc(); |
| 86 |
|
|
| 87 |
< |
extern double atof(); |
| 87 |
> |
extern double atof(), pow(), log(); |
| 88 |
|
|
| 89 |
|
|
| 90 |
|
main(argc, argv) |
| 114 |
|
case 'f': |
| 115 |
|
fast = !fast; |
| 116 |
|
break; |
| 117 |
+ |
case 'e': |
| 118 |
+ |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 119 |
+ |
goto userr; |
| 120 |
+ |
scale = atoi(argv[++i]); |
| 121 |
+ |
break; |
| 122 |
|
case 'g': |
| 123 |
|
gamcor = atof(argv[++i]); |
| 124 |
|
break; |
| 161 |
|
getevent(); /* main loop */ |
| 162 |
|
userr: |
| 163 |
|
fprintf(stderr, |
| 164 |
< |
"Usage: %s [=geometry][-b][-m][-d][-f][-c ncolors] file\n", |
| 164 |
> |
"Usage: %s [=geometry][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
| 165 |
|
progname); |
| 166 |
|
quit(1); |
| 167 |
|
} |
| 198 |
|
init() /* get data and open window */ |
| 199 |
|
{ |
| 200 |
|
register int i; |
| 194 |
– |
colormap ourmap; |
| 201 |
|
OpaqueFrame mainframe; |
| 202 |
|
char defgeom[32]; |
| 203 |
|
|
| 219 |
|
maxcolors = 1<<DisplayPlanes(); |
| 220 |
|
if (maxcolors > 4) maxcolors -= 2; |
| 221 |
|
} |
| 216 |
– |
ourras.width = xmax; |
| 217 |
– |
ourras.height = ymax; |
| 222 |
|
/* store image */ |
| 223 |
< |
if (maxcolors <= 2) { /* monochrome */ |
| 224 |
< |
ourras.data.m = (unsigned short *)malloc(BitmapSize(xmax,ymax)); |
| 221 |
< |
if (ourras.data.m == NULL) |
| 222 |
< |
goto memerr; |
| 223 |
< |
getmono(); |
| 224 |
< |
} else { |
| 225 |
< |
ourras.data.bz = (unsigned char *)malloc(BZPixmapSize(xmax,ymax)); |
| 226 |
< |
if (ourras.data.bz == NULL) |
| 227 |
< |
goto memerr; |
| 228 |
< |
if (greyscale) |
| 229 |
< |
biq(dither,maxcolors,1,ourmap); |
| 230 |
< |
else |
| 231 |
< |
ciq(dither,maxcolors,1,ourmap); |
| 232 |
< |
if (init_rcolors(&ourras, ourmap) == 0) |
| 233 |
< |
goto memerr; |
| 234 |
< |
} |
| 223 |
> |
getras(); |
| 224 |
> |
|
| 225 |
|
mainframe.bdrwidth = BORWIDTH; |
| 226 |
|
mainframe.border = WhitePixmap; |
| 227 |
|
mainframe.background = BlackPixmap; |
| 274 |
|
} |
| 275 |
|
|
| 276 |
|
|
| 277 |
+ |
getras() /* get raster file */ |
| 278 |
+ |
{ |
| 279 |
+ |
colormap ourmap; |
| 280 |
+ |
|
| 281 |
+ |
ourras = (XRASTER *)calloc(1, sizeof(XRASTER)); |
| 282 |
+ |
if (ourras == NULL) |
| 283 |
+ |
goto memerr; |
| 284 |
+ |
ourras->width = xmax; |
| 285 |
+ |
ourras->height = ymax; |
| 286 |
+ |
if (maxcolors <= 2) { /* monochrome */ |
| 287 |
+ |
ourras->data.m = (unsigned short *)malloc(BitmapSize(xmax,ymax)); |
| 288 |
+ |
if (ourras->data.m == NULL) |
| 289 |
+ |
goto memerr; |
| 290 |
+ |
getmono(); |
| 291 |
+ |
} else { |
| 292 |
+ |
ourras->data.bz = (unsigned char *)malloc(BZPixmapSize(xmax,ymax)); |
| 293 |
+ |
if (ourras->data.bz == NULL) |
| 294 |
+ |
goto memerr; |
| 295 |
+ |
if (greyscale) |
| 296 |
+ |
biq(dither,maxcolors,1,ourmap); |
| 297 |
+ |
else |
| 298 |
+ |
ciq(dither,maxcolors,1,ourmap); |
| 299 |
+ |
if (init_rcolors(ourras, ourmap) == 0) |
| 300 |
+ |
goto memerr; |
| 301 |
+ |
} |
| 302 |
+ |
return; |
| 303 |
+ |
memerr: |
| 304 |
+ |
quit("out of memory"); |
| 305 |
+ |
} |
| 306 |
+ |
|
| 307 |
+ |
|
| 308 |
|
getevent() /* process the next event */ |
| 309 |
|
{ |
| 310 |
|
WindowInfo info; |
| 324 |
|
fixwindow(&e); |
| 325 |
|
break; |
| 326 |
|
case UnmapWindow: |
| 327 |
< |
unmap_rcolors(&ourras); |
| 327 |
> |
unmap_rcolors(ourras); |
| 328 |
|
break; |
| 329 |
|
case ButtonPressed: |
| 330 |
|
if (controlshift(&e)) |
| 347 |
|
int x, y; |
| 348 |
|
int w, h; |
| 349 |
|
{ |
| 350 |
< |
map_rcolors(&ourras); |
| 350 |
> |
if (map_rcolors(ourras) == NULL) { |
| 351 |
> |
fprintf(stderr, "%s: cannot allocate colors\n", progname); |
| 352 |
> |
return(-1); |
| 353 |
> |
} |
| 354 |
|
if (fast) |
| 355 |
< |
make_rpixmap(&ourras); |
| 356 |
< |
return(patch_raster(wind,x-xoff,y-yoff,x,y,w,h,&ourras) ? 0 : -1); |
| 355 |
> |
make_rpixmap(ourras); |
| 356 |
> |
return(patch_raster(wind,x-xoff,y-yoff,x,y,w,h,ourras) ? 0 : -1); |
| 357 |
|
} |
| 358 |
|
|
| 359 |
|
|
| 364 |
|
COLOR cval; |
| 365 |
|
char *cp; |
| 366 |
|
int n; |
| 367 |
+ |
double comp; |
| 368 |
|
FVECT rorg, rdir; |
| 369 |
|
|
| 370 |
|
cp = XLookupMapping(ekey, &n); |
| 389 |
|
sprintf(buf, "%-3gL", bright(cval)*683.0/exposure); |
| 390 |
|
break; |
| 391 |
|
case 'c': /* color */ |
| 392 |
+ |
comp = pow(2.0, (double)scale); |
| 393 |
|
sprintf(buf, "(%.2f,%.2f,%.2f)", |
| 394 |
< |
colval(cval,RED), |
| 395 |
< |
colval(cval,GRN), |
| 396 |
< |
colval(cval,BLU)); |
| 394 |
> |
colval(cval,RED)*comp, |
| 395 |
> |
colval(cval,GRN)*comp, |
| 396 |
> |
colval(cval,BLU)*comp); |
| 397 |
|
break; |
| 398 |
|
} |
| 399 |
|
XText(wind, box.xmin, box.ymin, buf, strlen(buf), |
| 415 |
|
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
| 416 |
|
fflush(stdout); |
| 417 |
|
return(0); |
| 418 |
+ |
case '=': /* adjust exposure */ |
| 419 |
+ |
if (avgbox(cval) == -1) |
| 420 |
+ |
return(-1); |
| 421 |
+ |
n = log(.5/bright(cval))/.69315 - scale; /* truncate */ |
| 422 |
+ |
if (n == 0) { |
| 423 |
+ |
XFeep(0); |
| 424 |
+ |
return(0); |
| 425 |
+ |
} |
| 426 |
+ |
scale_rcolors(ourras, pow(2.0, (double)n)); |
| 427 |
+ |
scale += n; |
| 428 |
+ |
sprintf(buf, "%+d", scale); |
| 429 |
+ |
XText(wind, box.xmin, box.ymin, buf, strlen(buf), |
| 430 |
+ |
fontid, BlackPixel, WhitePixel); |
| 431 |
+ |
XFlush(); |
| 432 |
+ |
free_raster(ourras); |
| 433 |
+ |
getras(); |
| 434 |
+ |
return(redraw(0, 0, width, height)); |
| 435 |
|
case CTRL(R): /* redraw */ |
| 436 |
|
XClear(wind); |
| 437 |
|
return(redraw(0, 0, width, height)); |
| 550 |
|
if ((inline = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL |
| 551 |
|
|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
| 552 |
|
quit("out of memory in getmono"); |
| 553 |
< |
dp = ourras.data.m - 1; |
| 553 |
> |
dp = ourras->data.m - 1; |
| 554 |
|
for (y = 0; y < ymax; y++) { |
| 555 |
|
picreadline3(y, inline); |
| 556 |
|
err = 0; |
| 570 |
|
} |
| 571 |
|
|
| 572 |
|
|
| 573 |
< |
init_rcolors(xr, cmap) /* assign color values */ |
| 573 |
> |
init_rcolors(xr, cmap) /* (re)assign color values */ |
| 574 |
|
register XRASTER *xr; |
| 575 |
|
colormap cmap; |
| 576 |
|
{ |
| 601 |
|
} |
| 602 |
|
|
| 603 |
|
|
| 604 |
+ |
scale_rcolors(xr, sf) /* scale color map */ |
| 605 |
+ |
register XRASTER *xr; |
| 606 |
+ |
double sf; |
| 607 |
+ |
{ |
| 608 |
+ |
register int i; |
| 609 |
+ |
int maxv; |
| 610 |
+ |
|
| 611 |
+ |
sf = pow(sf, 1.0/gamcor); |
| 612 |
+ |
maxv = (1<<16) / sf; |
| 613 |
+ |
|
| 614 |
+ |
for (i = xr->ncolors; i--; ) { |
| 615 |
+ |
xr->cdefs[i].red = xr->cdefs[i].red >= maxv ? |
| 616 |
+ |
(1<<16)-1 : |
| 617 |
+ |
xr->cdefs[i].red * sf; |
| 618 |
+ |
xr->cdefs[i].green = xr->cdefs[i].green >= maxv ? |
| 619 |
+ |
(1<<16)-1 : |
| 620 |
+ |
xr->cdefs[i].green * sf; |
| 621 |
+ |
xr->cdefs[i].blue = xr->cdefs[i].blue >= maxv ? |
| 622 |
+ |
(1<<16)-1 : |
| 623 |
+ |
xr->cdefs[i].blue * sf; |
| 624 |
+ |
} |
| 625 |
+ |
if (xr->pixels != NULL) |
| 626 |
+ |
XStoreColors(xr->ncolors, xr->cdefs); |
| 627 |
+ |
} |
| 628 |
+ |
|
| 629 |
+ |
|
| 630 |
|
getscan(y) |
| 631 |
|
int y; |
| 632 |
|
{ |
| 659 |
|
quiterr("cannot seek for picreadline"); |
| 660 |
|
/* convert scanline */ |
| 661 |
|
for (l4=scanline[0], i=xmax; i--; l4+=4, l3++) { |
| 662 |
< |
shift = l4[EXP] - COLXS; |
| 662 |
> |
shift = l4[EXP] - COLXS + scale; |
| 663 |
|
if (shift >= 8) { |
| 664 |
|
l3->r = l3->g = l3->b = 255; |
| 665 |
|
} else if (shift <= -8) { |
| 688 |
|
int y; |
| 689 |
|
pixel *l; |
| 690 |
|
{ |
| 691 |
< |
bcopy(l, ourras.data.bz+BZPixmapSize(xmax,y), BZPixmapSize(xmax,1)); |
| 691 |
> |
bcopy(l, ourras->data.bz+BZPixmapSize(xmax,y), BZPixmapSize(xmax,1)); |
| 692 |
|
} |
| 693 |
|
|
| 694 |
|
|
| 708 |
|
picwritecm(map) /* handled elsewhere */ |
| 709 |
|
colormap map; |
| 710 |
|
{ |
| 711 |
+ |
#ifdef DEBUG |
| 712 |
+ |
register int i; |
| 713 |
+ |
|
| 714 |
+ |
for (i = 0; i < 256; i++) |
| 715 |
+ |
printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]); |
| 716 |
+ |
#endif |
| 717 |
|
} |