1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id"; |
3 |
#endif |
4 |
/* |
5 |
* x11image.c - driver for X-windows |
6 |
* |
7 |
* 3/1/90 |
8 |
*/ |
9 |
|
10 |
/* |
11 |
* Modified for X11 |
12 |
* |
13 |
* January 1990 |
14 |
* |
15 |
* Anat Grynberg and Greg Ward |
16 |
*/ |
17 |
|
18 |
|
19 |
#include "standard.h" |
20 |
|
21 |
#include <string.h> |
22 |
#include <signal.h> |
23 |
#include <X11/Xlib.h> |
24 |
#include <X11/cursorfont.h> |
25 |
#include <X11/Xutil.h> |
26 |
#include <X11/Xatom.h> |
27 |
|
28 |
#include "color.h" |
29 |
#include "tonemap.h" |
30 |
#include "view.h" |
31 |
#include "x11raster.h" |
32 |
#include "random.h" |
33 |
|
34 |
#define FONTNAME "8x13" /* text font we'll use */ |
35 |
|
36 |
#define CTRL(c) ((c)-'@') |
37 |
|
38 |
#define BORWIDTH 5 /* border width */ |
39 |
|
40 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
41 |
|
42 |
#define FIXWEIGHT 20 /* weight to add for fixation points */ |
43 |
|
44 |
#define ourscreen DefaultScreen(thedisplay) |
45 |
#define ourroot RootWindow(thedisplay,ourscreen) |
46 |
|
47 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
48 |
|
49 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
50 |
|
51 |
double gamcor = 2.2; /* gamma correction */ |
52 |
char *gamstr = NULL; /* gamma value override */ |
53 |
|
54 |
int dither = 1; /* dither colors? */ |
55 |
int fast = 0; /* keep picture in Pixmap? */ |
56 |
|
57 |
char *dispname = NULL; /* our display name */ |
58 |
|
59 |
Window wind = 0; /* our output window */ |
60 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
61 |
int maxcolors = 0; /* maximum colors */ |
62 |
int greyscale = 0; /* in grey */ |
63 |
|
64 |
int scale = 0; /* scalefactor; power of two */ |
65 |
|
66 |
int xoff = 0; /* x image offset */ |
67 |
int yoff = 0; /* y image offset */ |
68 |
|
69 |
int parent = 0; /* number of children, -1 if child */ |
70 |
int sequential = 0; /* display images in sequence */ |
71 |
|
72 |
char *tout = "od"; /* output of 't' command */ |
73 |
int tinterv = 0; /* interval between mouse reports */ |
74 |
|
75 |
int tmflags = TM_F_LINEAR; /* tone mapping flags */ |
76 |
|
77 |
VIEW ourview = STDVIEW; /* image view parameters */ |
78 |
int gotview = 0; /* got parameters from file */ |
79 |
|
80 |
COLR *scanline; /* scan line buffer */ |
81 |
TMbright *lscan; /* encoded luminance scanline */ |
82 |
BYTE *cscan; /* encoded chroma scanline */ |
83 |
BYTE *pscan; /* compute pixel scanline */ |
84 |
|
85 |
RESOLU inpres; /* input resolution and ordering */ |
86 |
int xmax, ymax; /* picture dimensions */ |
87 |
int width, height; /* window size */ |
88 |
char *fname = NULL; /* input file name */ |
89 |
FILE *fin = NULL; /* input file */ |
90 |
long *scanpos = NULL; /* scan line positions in file */ |
91 |
int cury = 0; /* current scan location */ |
92 |
|
93 |
double exposure = 1.0; /* exposure compensation used */ |
94 |
|
95 |
int wrongformat = 0; /* input in another format? */ |
96 |
|
97 |
GC ourgc; /* standard graphics context */ |
98 |
GC revgc; /* graphics context with GXinvert */ |
99 |
|
100 |
int *ourrank; /* our visual class ranking */ |
101 |
XVisualInfo ourvis; /* our visual */ |
102 |
XRASTER *ourras; /* our stored image */ |
103 |
unsigned char *ourdata; /* our image data */ |
104 |
|
105 |
struct { |
106 |
int xmin, ymin, xsiz, ysiz; |
107 |
} bbox = {0, 0, 0, 0}; /* current bbox */ |
108 |
|
109 |
char *geometry = NULL; /* geometry specification */ |
110 |
|
111 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
112 |
int iconwidth = 0, iconheight = 0; |
113 |
|
114 |
char *progname; |
115 |
|
116 |
char errmsg[128]; |
117 |
|
118 |
BYTE clrtab[256][3]; /* global color map */ |
119 |
|
120 |
extern long ftell(); |
121 |
|
122 |
extern char *getenv(); |
123 |
|
124 |
Display *thedisplay; |
125 |
Atom closedownAtom, wmProtocolsAtom; |
126 |
|
127 |
int sigrecv; |
128 |
|
129 |
void onsig(int i) { sigrecv++; } |
130 |
|
131 |
static gethfunc headline; |
132 |
|
133 |
|
134 |
main(argc, argv) |
135 |
int argc; |
136 |
char *argv[]; |
137 |
{ |
138 |
int i; |
139 |
int pid; |
140 |
|
141 |
progname = argv[0]; |
142 |
fin = stdin; |
143 |
|
144 |
for (i = 1; i < argc; i++) |
145 |
if (argv[i][0] == '-') |
146 |
switch (argv[i][1]) { |
147 |
case 'c': /* number of colors */ |
148 |
maxcolors = atoi(argv[++i]); |
149 |
break; |
150 |
case 'b': /* greyscale only */ |
151 |
greyscale = !greyscale; |
152 |
break; |
153 |
case 'm': /* monochrome */ |
154 |
greyscale = 1; |
155 |
maxcolors = 2; |
156 |
break; |
157 |
case 'd': /* display or dither */ |
158 |
if (argv[i][2] == 'i') |
159 |
dispname = argv[++i]; |
160 |
else |
161 |
dither = !dither; |
162 |
break; |
163 |
case 'f': /* save pixmap */ |
164 |
fast = !fast; |
165 |
break; |
166 |
case 's': /* one at a time */ |
167 |
sequential = !sequential; |
168 |
break; |
169 |
case 'o': /* 't' output */ |
170 |
tout = argv[i]+2; |
171 |
break; |
172 |
case 't': /* msec interval */ |
173 |
tinterv = atoi(argv[++i]); |
174 |
break; |
175 |
case 'e': /* exposure comp. */ |
176 |
i++; |
177 |
if (argv[i][0] == 'a') { |
178 |
tmflags = TM_F_CAMERA; |
179 |
break; |
180 |
} |
181 |
if (argv[i][0] == 'h') { |
182 |
tmflags = TM_F_HUMAN; |
183 |
break; |
184 |
} |
185 |
if (argv[i][0] != '+' && argv[i][0] != '-') |
186 |
goto userr; |
187 |
scale = atoi(argv[i]); |
188 |
break; |
189 |
case 'g': /* gamma comp. */ |
190 |
if (argv[i][2] == 'e') |
191 |
geometry = argv[++i]; |
192 |
else |
193 |
gamstr = argv[++i]; |
194 |
break; |
195 |
default: |
196 |
goto userr; |
197 |
} |
198 |
else if (argv[i][0] == '=') |
199 |
geometry = argv[i]; |
200 |
else |
201 |
break; |
202 |
|
203 |
if (i > argc) |
204 |
goto userr; |
205 |
while (i < argc-1) { |
206 |
sigrecv = 0; |
207 |
signal(SIGCONT, onsig); |
208 |
if ((pid=fork()) == 0) { /* a child for each picture */ |
209 |
parent = -1; |
210 |
break; |
211 |
} |
212 |
if (pid < 0) |
213 |
quiterr("fork failed"); |
214 |
parent++; |
215 |
while (!sigrecv) |
216 |
pause(); /* wait for wake-up call */ |
217 |
i++; |
218 |
} |
219 |
if (i < argc) { /* open picture file */ |
220 |
fname = argv[i]; |
221 |
fin = fopen(fname, "r"); |
222 |
if (fin == NULL) |
223 |
quiterr("cannot open picture file"); |
224 |
} |
225 |
/* get header */ |
226 |
getheader(fin, headline, NULL); |
227 |
/* get picture dimensions */ |
228 |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
229 |
quiterr("bad picture format"); |
230 |
xmax = scanlen(&inpres); |
231 |
ymax = numscans(&inpres); |
232 |
/* set view parameters */ |
233 |
if (gotview && setview(&ourview) != NULL) |
234 |
gotview = 0; |
235 |
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
236 |
quiterr("out of memory"); |
237 |
|
238 |
init(argc, argv); /* get file and open window */ |
239 |
|
240 |
for ( ; ; ) |
241 |
getevent(); /* main loop */ |
242 |
userr: |
243 |
fprintf(stderr, |
244 |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] pic ..\n", |
245 |
progname); |
246 |
exit(1); |
247 |
} |
248 |
|
249 |
|
250 |
static int |
251 |
headline( /* get relevant info from header */ |
252 |
char *s, |
253 |
void *p |
254 |
) |
255 |
{ |
256 |
char fmt[32]; |
257 |
|
258 |
if (isexpos(s)) |
259 |
exposure *= exposval(s); |
260 |
else if (formatval(fmt, s)) |
261 |
wrongformat = strcmp(fmt, COLRFMT); |
262 |
else if (isview(s) && sscanview(&ourview, s) > 0) |
263 |
gotview++; |
264 |
return(0); |
265 |
} |
266 |
|
267 |
|
268 |
init(argc, argv) /* get data and open window */ |
269 |
int argc; |
270 |
char **argv; |
271 |
{ |
272 |
XSetWindowAttributes ourwinattr; |
273 |
XClassHint xclshints; |
274 |
XWMHints xwmhints; |
275 |
XSizeHints xszhints; |
276 |
XTextProperty windowName, iconName; |
277 |
XGCValues xgcv; |
278 |
char *name; |
279 |
register int i; |
280 |
|
281 |
if (fname != NULL) { |
282 |
scanpos = (long *)malloc(ymax*sizeof(long)); |
283 |
if (scanpos == NULL) |
284 |
quiterr("out of memory"); |
285 |
for (i = 0; i < ymax; i++) |
286 |
scanpos[i] = -1; |
287 |
name = fname; |
288 |
} else |
289 |
name = progname; |
290 |
/* remove directory prefix from name */ |
291 |
for (i = strlen(name); i-- > 0; ) |
292 |
if (name[i] == '/') |
293 |
break; |
294 |
name += i+1; |
295 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
296 |
quiterr("cannot open display"); |
297 |
/* set gamma value */ |
298 |
if (gamstr == NULL) /* get it from the X server */ |
299 |
gamstr = XGetDefault(thedisplay, "radiance", "gamma"); |
300 |
if (gamstr == NULL) /* get it from the environment */ |
301 |
gamstr = getenv("DISPLAY_GAMMA"); |
302 |
if (gamstr != NULL) |
303 |
gamcor = atof(gamstr); |
304 |
/* get best visual for default screen */ |
305 |
getbestvis(); |
306 |
/* store image */ |
307 |
getras(); |
308 |
/* get size and position */ |
309 |
xszhints.flags = 0; |
310 |
xszhints.width = xmax; xszhints.height = ymax; |
311 |
if (geometry != NULL) { |
312 |
i = XParseGeometry(geometry, &xszhints.x, &xszhints.y, |
313 |
(unsigned *)&xszhints.width, |
314 |
(unsigned *)&xszhints.height); |
315 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
316 |
xszhints.flags |= USSize; |
317 |
else |
318 |
xszhints.flags |= PSize; |
319 |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
320 |
xszhints.flags |= USPosition; |
321 |
if (i & XNegative) |
322 |
xszhints.x += DisplayWidth(thedisplay, |
323 |
ourscreen)-1-xszhints.width-2*BORWIDTH; |
324 |
if (i & YNegative) |
325 |
xszhints.y += DisplayHeight(thedisplay, |
326 |
ourscreen)-1-xszhints.height-2*BORWIDTH; |
327 |
} |
328 |
} |
329 |
/* open window */ |
330 |
i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel; |
331 |
ourwinattr.border_pixel = ourwhite; |
332 |
ourwinattr.background_pixel = ourblack; |
333 |
if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) { |
334 |
ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual); |
335 |
i |= CWColormap; |
336 |
} |
337 |
ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask| |
338 |
ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask; |
339 |
ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross); |
340 |
wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y, |
341 |
xszhints.width, xszhints.height, BORWIDTH, |
342 |
ourvis.depth, InputOutput, ourvis.visual, |
343 |
i, &ourwinattr); |
344 |
if (wind == 0) |
345 |
quiterr("cannot create window"); |
346 |
width = xmax; |
347 |
height = ymax; |
348 |
/* prepare graphics drawing context */ |
349 |
if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
350 |
quiterr("cannot get font"); |
351 |
xgcv.foreground = ourblack; |
352 |
xgcv.background = ourwhite; |
353 |
ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
354 |
GCFont, &xgcv); |
355 |
xgcv.function = GXinvert; |
356 |
revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
357 |
GCFunction, &xgcv); |
358 |
|
359 |
/* set up the window manager */ |
360 |
xwmhints.flags = InputHint|IconPixmapHint; |
361 |
xwmhints.input = True; |
362 |
xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
363 |
wind, icondata, iconwidth, iconheight); |
364 |
|
365 |
windowName.encoding = iconName.encoding = XA_STRING; |
366 |
windowName.format = iconName.format = 8; |
367 |
windowName.value = (u_char *)name; |
368 |
windowName.nitems = strlen(windowName.value); |
369 |
iconName.value = (u_char *)name; |
370 |
iconName.nitems = strlen(windowName.value); |
371 |
|
372 |
xclshints.res_name = NULL; |
373 |
xclshints.res_class = "Ximage"; |
374 |
XSetWMProperties(thedisplay, wind, &windowName, &iconName, |
375 |
argv, argc, &xszhints, &xwmhints, &xclshints); |
376 |
closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False); |
377 |
wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False); |
378 |
XSetWMProtocols(thedisplay, wind, &closedownAtom, 1); |
379 |
|
380 |
XMapWindow(thedisplay, wind); |
381 |
} /* end of init */ |
382 |
|
383 |
|
384 |
quiterr(err) /* print message and exit */ |
385 |
char *err; |
386 |
{ |
387 |
register int es; |
388 |
int cs; |
389 |
|
390 |
if ( (es = err != NULL) ) |
391 |
fprintf(stderr, "%s: %s: %s\n", progname, |
392 |
fname==NULL?"<stdin>":fname, err); |
393 |
if (thedisplay != NULL) |
394 |
XCloseDisplay(thedisplay); |
395 |
if ((parent < 0) & (sigrecv == 0)) |
396 |
kill(getppid(), SIGCONT); |
397 |
while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
398 |
if (es == 0) |
399 |
es = cs>>8 & 0xff; |
400 |
parent--; |
401 |
} |
402 |
exit(es); |
403 |
} |
404 |
|
405 |
|
406 |
static int |
407 |
viscmp(v1,v2) /* compare visual to see which is better, descending */ |
408 |
register XVisualInfo *v1, *v2; |
409 |
{ |
410 |
int bad1 = 0, bad2 = 0; |
411 |
register int *rp; |
412 |
|
413 |
if (v1->class == v2->class) { |
414 |
if (v1->class == TrueColor || v1->class == DirectColor) { |
415 |
/* prefer 24-bit to 32-bit */ |
416 |
if (v1->depth == 24 && v2->depth == 32) |
417 |
return(-1); |
418 |
if (v1->depth == 32 && v2->depth == 24) |
419 |
return(1); |
420 |
/* go for maximum depth otherwise */ |
421 |
return(v2->depth - v1->depth); |
422 |
} |
423 |
/* don't be too greedy */ |
424 |
if (maxcolors <= 1<<v1->depth && maxcolors <= 1<<v2->depth) |
425 |
return(v1->depth - v2->depth); |
426 |
return(v2->depth - v1->depth); |
427 |
} |
428 |
/* prefer Pseudo when < 15-bit */ |
429 |
if ((v1->class == TrueColor || v1->class == DirectColor) && |
430 |
v1->depth < 15) |
431 |
bad1 = 1; |
432 |
if ((v2->class == TrueColor || v2->class == DirectColor) && |
433 |
v2->depth < 15) |
434 |
bad2 = -1; |
435 |
if (bad1 | bad2) |
436 |
return(bad1+bad2); |
437 |
/* otherwise, use class ranking */ |
438 |
for (rp = ourrank; *rp != -1; rp++) { |
439 |
if (v1->class == *rp) |
440 |
return(-1); |
441 |
if (v2->class == *rp) |
442 |
return(1); |
443 |
} |
444 |
return(0); |
445 |
} |
446 |
|
447 |
|
448 |
getbestvis() /* get the best visual for this screen */ |
449 |
{ |
450 |
#ifdef DEBUG |
451 |
static char vistype[][12] = { |
452 |
"StaticGray", |
453 |
"GrayScale", |
454 |
"StaticColor", |
455 |
"PseudoColor", |
456 |
"TrueColor", |
457 |
"DirectColor" |
458 |
}; |
459 |
#endif |
460 |
static int rankings[3][6] = { |
461 |
{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
462 |
{PseudoColor,GrayScale,StaticGray,-1}, |
463 |
{PseudoColor,GrayScale,StaticGray,-1} |
464 |
}; |
465 |
XVisualInfo *xvi; |
466 |
int vismatched; |
467 |
register int i, j; |
468 |
|
469 |
if (greyscale) { |
470 |
ourrank = rankings[2]; |
471 |
if (maxcolors < 2) maxcolors = 256; |
472 |
} else if (maxcolors >= 2 && maxcolors <= 256) |
473 |
ourrank = rankings[1]; |
474 |
else { |
475 |
ourrank = rankings[0]; |
476 |
maxcolors = 256; |
477 |
} |
478 |
/* find best visual */ |
479 |
ourvis.screen = ourscreen; |
480 |
xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
481 |
if (xvi == NULL) |
482 |
quiterr("no visuals for this screen!"); |
483 |
#ifdef DEBUG |
484 |
fprintf(stderr, "Supported visuals:\n"); |
485 |
for (i = 0; i < vismatched; i++) |
486 |
fprintf(stderr, "\ttype %s, depth %d\n", |
487 |
vistype[xvi[i].class], xvi[i].depth); |
488 |
#endif |
489 |
for (i = 0, j = 1; j < vismatched; j++) |
490 |
if (viscmp(&xvi[i],&xvi[j]) > 0) |
491 |
i = j; |
492 |
/* compare to least acceptable */ |
493 |
for (j = 0; ourrank[j++] != -1; ) |
494 |
; |
495 |
ourvis.class = ourrank[--j]; |
496 |
ourvis.depth = 1; |
497 |
if (viscmp(&xvi[i],&ourvis) > 0) |
498 |
quiterr("inadequate visuals on this screen"); |
499 |
/* OK, we'll use it */ |
500 |
ourvis = xvi[i]; |
501 |
#ifdef DEBUG |
502 |
fprintf(stderr, "Selected visual type %s, depth %d\n", |
503 |
vistype[ourvis.class], ourvis.depth); |
504 |
#endif |
505 |
/* make appropriate adjustments */ |
506 |
if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
507 |
greyscale = 1; |
508 |
if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
509 |
maxcolors = ourvis.colormap_size; |
510 |
if (ourvis.class == StaticGray) { |
511 |
ourblack = 0; |
512 |
ourwhite = 255; |
513 |
} else if (ourvis.class == PseudoColor) { |
514 |
ourblack = BlackPixel(thedisplay,ourscreen); |
515 |
ourwhite = WhitePixel(thedisplay,ourscreen); |
516 |
if ((ourblack|ourwhite) & ~255L) { |
517 |
ourblack = 0; |
518 |
ourwhite = 1; |
519 |
} |
520 |
if (maxcolors > 4) |
521 |
maxcolors -= 2; |
522 |
} else { |
523 |
ourblack = 0; |
524 |
ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
525 |
} |
526 |
XFree((char *)xvi); |
527 |
} |
528 |
|
529 |
|
530 |
getras() /* get raster file */ |
531 |
{ |
532 |
XVisualInfo vinfo; |
533 |
|
534 |
if (maxcolors <= 2) { /* monochrome */ |
535 |
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
536 |
if (ourdata == NULL) |
537 |
goto fail; |
538 |
ourras = make_raster(thedisplay, &ourvis, 1, ourdata, |
539 |
xmax, ymax, 8); |
540 |
if (ourras == NULL) |
541 |
goto fail; |
542 |
getmono(); |
543 |
} else if ((ourvis.class == TrueColor) | (ourvis.class == DirectColor)) { |
544 |
int datsiz = ourvis.depth>16 ? sizeof(int32) : sizeof(int16); |
545 |
ourdata = (unsigned char *)malloc(datsiz*xmax*ymax); |
546 |
if (ourdata == NULL) |
547 |
goto fail; |
548 |
ourras = make_raster(thedisplay, &ourvis, datsiz*8, |
549 |
ourdata, xmax, ymax, datsiz*8); |
550 |
if (ourras == NULL) |
551 |
goto fail; |
552 |
getfull(); |
553 |
} else { |
554 |
ourdata = (unsigned char *)malloc(xmax*ymax); |
555 |
if (ourdata == NULL) |
556 |
goto fail; |
557 |
ourras = make_raster(thedisplay, &ourvis, 8, ourdata, |
558 |
xmax, ymax, 8); |
559 |
if (ourras == NULL) |
560 |
goto fail; |
561 |
if (greyscale) |
562 |
getgrey(); |
563 |
else |
564 |
getmapped(); |
565 |
if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab)) |
566 |
goto fail; |
567 |
} |
568 |
return; |
569 |
fail: |
570 |
quiterr("could not create raster image"); |
571 |
} |
572 |
|
573 |
|
574 |
getevent() /* process the next event */ |
575 |
{ |
576 |
XEvent xev; |
577 |
|
578 |
XNextEvent(thedisplay, &xev); |
579 |
switch ((int)xev.type) { |
580 |
case KeyPress: |
581 |
docom(&xev.xkey); |
582 |
break; |
583 |
case ConfigureNotify: |
584 |
width = xev.xconfigure.width; |
585 |
height = xev.xconfigure.height; |
586 |
break; |
587 |
case MapNotify: |
588 |
map_rcolors(ourras, wind); |
589 |
if (fast) |
590 |
make_rpixmap(ourras, wind); |
591 |
if ((!sequential) & (parent < 0) & (sigrecv == 0)) { |
592 |
kill(getppid(), SIGCONT); |
593 |
sigrecv--; |
594 |
} |
595 |
break; |
596 |
case UnmapNotify: |
597 |
if (!fast) |
598 |
unmap_rcolors(ourras); |
599 |
break; |
600 |
case Expose: |
601 |
redraw(xev.xexpose.x, xev.xexpose.y, |
602 |
xev.xexpose.width, xev.xexpose.height); |
603 |
break; |
604 |
case ButtonPress: |
605 |
if (xev.xbutton.state & (ShiftMask|ControlMask)) |
606 |
moveimage(&xev.xbutton); |
607 |
else |
608 |
switch (xev.xbutton.button) { |
609 |
case Button1: |
610 |
getbox(&xev.xbutton); |
611 |
break; |
612 |
case Button2: |
613 |
traceray(xev.xbutton.x, xev.xbutton.y); |
614 |
break; |
615 |
case Button3: |
616 |
trackrays(&xev.xbutton); |
617 |
break; |
618 |
} |
619 |
break; |
620 |
case ClientMessage: |
621 |
if ((xev.xclient.message_type == wmProtocolsAtom) && |
622 |
(xev.xclient.data.l[0] == closedownAtom)) |
623 |
quiterr(NULL); |
624 |
break; |
625 |
} |
626 |
} |
627 |
|
628 |
|
629 |
traceray(xpos, ypos) /* print requested pixel data */ |
630 |
int xpos, ypos; |
631 |
{ |
632 |
RREAL hv[2]; |
633 |
FVECT rorg, rdir; |
634 |
COLOR cval; |
635 |
register char *cp; |
636 |
|
637 |
bbox.xmin = xpos; bbox.xsiz = 1; |
638 |
bbox.ymin = ypos; bbox.ysiz = 1; |
639 |
avgbox(cval); |
640 |
scalecolor(cval, 1./exposure); |
641 |
pix2loc(hv, &inpres, xpos-xoff, ypos-yoff); |
642 |
if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
643 |
rorg[0] = rorg[1] = rorg[2] = |
644 |
rdir[0] = rdir[1] = rdir[2] = 0.; |
645 |
|
646 |
for (cp = tout; *cp; cp++) /* print what they asked for */ |
647 |
switch (*cp) { |
648 |
case 'o': /* origin */ |
649 |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
650 |
break; |
651 |
case 'd': /* direction */ |
652 |
printf("%e %e %e ", rdir[0], rdir[1], rdir[2]); |
653 |
break; |
654 |
case 'v': /* radiance value */ |
655 |
printf("%e %e %e ", colval(cval,RED), |
656 |
colval(cval,GRN), colval(cval,BLU)); |
657 |
break; |
658 |
case 'l': /* luminance */ |
659 |
printf("%e ", luminance(cval)); |
660 |
break; |
661 |
case 'p': /* pixel position */ |
662 |
printf("%d %d ", (int)(hv[0]*inpres.xr), |
663 |
(int)(hv[1]*inpres.yr)); |
664 |
break; |
665 |
} |
666 |
putchar('\n'); |
667 |
fflush(stdout); |
668 |
return(0); |
669 |
} |
670 |
|
671 |
|
672 |
docom(ekey) /* execute command */ |
673 |
XKeyPressedEvent *ekey; |
674 |
{ |
675 |
char buf[80]; |
676 |
COLOR cval; |
677 |
XColor cvx; |
678 |
int com, n; |
679 |
double comp; |
680 |
RREAL hv[2]; |
681 |
|
682 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
683 |
if (n == 0) |
684 |
return(0); |
685 |
com = buf[0]; |
686 |
switch (com) { /* interpret command */ |
687 |
case 'q': |
688 |
case 'Q': |
689 |
case CTRL('D'): /* quit */ |
690 |
quiterr(NULL); |
691 |
case '\n': |
692 |
case '\r': |
693 |
case 'l': |
694 |
case 'c': /* value */ |
695 |
if (!avgbox(cval)) |
696 |
return(-1); |
697 |
switch (com) { |
698 |
case '\n': |
699 |
case '\r': /* radiance */ |
700 |
sprintf(buf, "%.3f", intens(cval)/exposure); |
701 |
break; |
702 |
case 'l': /* luminance */ |
703 |
sprintf(buf, "%.1fL", luminance(cval)/exposure); |
704 |
break; |
705 |
case 'c': /* color */ |
706 |
comp = pow(2.0, (double)scale); |
707 |
sprintf(buf, "(%.2f,%.2f,%.2f)", |
708 |
colval(cval,RED)*comp, |
709 |
colval(cval,GRN)*comp, |
710 |
colval(cval,BLU)*comp); |
711 |
break; |
712 |
} |
713 |
XDrawImageString(thedisplay, wind, ourgc, |
714 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf)); |
715 |
return(0); |
716 |
case 'i': /* identify (contour) */ |
717 |
if (ourras->pixels == NULL) |
718 |
return(-1); |
719 |
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)]; |
720 |
n = ourras->pmap[n]; |
721 |
cvx.pixel = ourras->cdefs[n].pixel; |
722 |
cvx.red = random() & 65535; |
723 |
cvx.green = random() & 65535; |
724 |
cvx.blue = random() & 65535; |
725 |
cvx.flags = DoRed|DoGreen|DoBlue; |
726 |
XStoreColor(thedisplay, ourras->cmap, &cvx); |
727 |
return(0); |
728 |
case 'p': /* position */ |
729 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
730 |
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
731 |
(int)(hv[1]*inpres.yr)); |
732 |
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
733 |
buf, strlen(buf)); |
734 |
return(0); |
735 |
case 't': /* trace */ |
736 |
return(traceray(ekey->x, ekey->y)); |
737 |
case 'a': /* auto exposure */ |
738 |
if (fname == NULL) |
739 |
return(-1); |
740 |
tmflags = TM_F_CAMERA; |
741 |
strcpy(buf, "auto exposure..."); |
742 |
goto remap; |
743 |
case 'h': /* human response */ |
744 |
if (fname == NULL) |
745 |
return(-1); |
746 |
tmflags = TM_F_HUMAN; |
747 |
strcpy(buf, "human exposure..."); |
748 |
goto remap; |
749 |
case '=': /* adjust exposure */ |
750 |
case '@': /* adaptation level */ |
751 |
if (!avgbox(cval)) |
752 |
return(-1); |
753 |
comp = bright(cval); |
754 |
if (comp < 1e-20) { |
755 |
XBell(thedisplay, 0); |
756 |
return(-1); |
757 |
} |
758 |
if (com == '@') |
759 |
comp = 106./exposure/ |
760 |
pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5); |
761 |
else |
762 |
comp = .5/comp; |
763 |
comp = log(comp)/.69315 - scale; |
764 |
n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
765 |
if (tmflags != TM_F_LINEAR) |
766 |
tmflags = TM_F_LINEAR; /* turn off tone mapping */ |
767 |
else { |
768 |
if (n == 0) /* else check if any change */ |
769 |
return(0); |
770 |
scale_rcolors(ourras, pow(2.0, (double)n)); |
771 |
} |
772 |
scale += n; |
773 |
sprintf(buf, "%+d", scale); |
774 |
remap: |
775 |
XDrawImageString(thedisplay, wind, ourgc, |
776 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf)); |
777 |
XFlush(thedisplay); |
778 |
/* free(ourdata); This is done in XDestroyImage()! */ |
779 |
free_raster(ourras); |
780 |
getras(); |
781 |
/* fall through */ |
782 |
case CTRL('R'): /* redraw */ |
783 |
case CTRL('L'): |
784 |
unmap_rcolors(ourras); |
785 |
XClearWindow(thedisplay, wind); |
786 |
map_rcolors(ourras, wind); |
787 |
if (fast) |
788 |
make_rpixmap(ourras, wind); |
789 |
redraw(0, 0, width, height); |
790 |
return(0); |
791 |
case 'f': /* turn on fast redraw */ |
792 |
fast = 1; |
793 |
make_rpixmap(ourras, wind); |
794 |
return(0); |
795 |
case 'F': /* turn off fast redraw */ |
796 |
fast = 0; |
797 |
free_rpixmap(ourras); |
798 |
return(0); |
799 |
case '0': /* recenter origin */ |
800 |
if ((xoff == 0) & (yoff == 0)) |
801 |
return(0); |
802 |
xoff = yoff = 0; |
803 |
XClearWindow(thedisplay, wind); |
804 |
redraw(0, 0, width, height); |
805 |
return(0); |
806 |
case ' ': /* clear */ |
807 |
redraw(bbox.xmin, bbox.ymin, bbox.xsiz, bbox.ysiz); |
808 |
return(0); |
809 |
default: |
810 |
XBell(thedisplay, 0); |
811 |
return(-1); |
812 |
} |
813 |
} |
814 |
|
815 |
|
816 |
moveimage(ebut) /* shift the image */ |
817 |
XButtonPressedEvent *ebut; |
818 |
{ |
819 |
XEvent e; |
820 |
int mxo, myo; |
821 |
|
822 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
823 |
while (e.type == MotionNotify) { |
824 |
mxo = e.xmotion.x; |
825 |
myo = e.xmotion.y; |
826 |
revline(ebut->x, ebut->y, mxo, myo); |
827 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
828 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
829 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
830 |
revline(ebut->x, ebut->y, mxo, myo); |
831 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
832 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
833 |
} |
834 |
xoff += e.xbutton.x - ebut->x; |
835 |
yoff += e.xbutton.y - ebut->y; |
836 |
XClearWindow(thedisplay, wind); |
837 |
redraw(0, 0, width, height); |
838 |
} |
839 |
|
840 |
|
841 |
getbox(ebut) /* get new bbox */ |
842 |
XButtonPressedEvent *ebut; |
843 |
{ |
844 |
XEvent e; |
845 |
|
846 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
847 |
while (e.type == MotionNotify) { |
848 |
revbox(ebut->x, ebut->y, bbox.xmin = e.xmotion.x, bbox.ymin = e.xmotion.y); |
849 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
850 |
revbox(ebut->x, ebut->y, bbox.xmin, bbox.ymin); |
851 |
} |
852 |
bbox.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x); |
853 |
bbox.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y); |
854 |
if (bbox.xmin > ebut->x) { |
855 |
bbox.xsiz = bbox.xmin - ebut->x + 1; |
856 |
bbox.xmin = ebut->x; |
857 |
} else { |
858 |
bbox.xsiz = ebut->x - bbox.xmin + 1; |
859 |
} |
860 |
if (bbox.ymin > ebut->y) { |
861 |
bbox.ysiz = bbox.ymin - ebut->y + 1; |
862 |
bbox.ymin = ebut->y; |
863 |
} else { |
864 |
bbox.ysiz = ebut->y - bbox.ymin + 1; |
865 |
} |
866 |
} |
867 |
|
868 |
|
869 |
trackrays(ebut) /* trace rays as mouse moves */ |
870 |
XButtonPressedEvent *ebut; |
871 |
{ |
872 |
XEvent e; |
873 |
unsigned long lastrept; |
874 |
|
875 |
traceray(ebut->x, ebut->y); |
876 |
lastrept = ebut->time; |
877 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
878 |
while (e.type == MotionNotify) { |
879 |
if (e.xmotion.time >= lastrept + tinterv) { |
880 |
traceray(e.xmotion.x, e.xmotion.y); |
881 |
lastrept = e.xmotion.time; |
882 |
} |
883 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
884 |
} |
885 |
} |
886 |
|
887 |
|
888 |
revbox(x0, y0, x1, y1) /* draw bbox with reversed lines */ |
889 |
int x0, y0, x1, y1; |
890 |
{ |
891 |
revline(x0, y0, x1, y0); |
892 |
revline(x0, y1, x1, y1); |
893 |
revline(x0, y0, x0, y1); |
894 |
revline(x1, y0, x1, y1); |
895 |
} |
896 |
|
897 |
|
898 |
void |
899 |
colavg(scn, n, cavg) |
900 |
register COLR *scn; |
901 |
register int n; |
902 |
COLOR cavg; |
903 |
{ |
904 |
COLOR col; |
905 |
|
906 |
while (n--) { |
907 |
colr_color(col, *scn++); |
908 |
addcolor(cavg, col); |
909 |
} |
910 |
} |
911 |
|
912 |
|
913 |
int |
914 |
avgbox(cavg) /* average color over current bbox */ |
915 |
COLOR cavg; |
916 |
{ |
917 |
double d; |
918 |
register int rval; |
919 |
|
920 |
setcolor(cavg, 0., 0., 0.); |
921 |
rval = dobox(colavg, (char *)cavg); |
922 |
if (rval > 0) { |
923 |
d = 1./rval; |
924 |
scalecolor(cavg, d); |
925 |
} |
926 |
return(rval); |
927 |
} |
928 |
|
929 |
|
930 |
int |
931 |
dobox(f, p) /* run function over bbox */ |
932 |
void (*f)(); /* function to call for each subscan */ |
933 |
char *p; /* pointer to private data */ |
934 |
{ |
935 |
int left, right, top, bottom; |
936 |
int y; |
937 |
|
938 |
left = bbox.xmin - xoff; |
939 |
right = left + bbox.xsiz; |
940 |
if (left < 0) |
941 |
left = 0; |
942 |
if (right > xmax) |
943 |
right = xmax; |
944 |
if (left >= right) |
945 |
return(0); |
946 |
top = bbox.ymin - yoff; |
947 |
bottom = top + bbox.ysiz; |
948 |
if (top < 0) |
949 |
top = 0; |
950 |
if (bottom > ymax) |
951 |
bottom = ymax; |
952 |
if (top >= bottom) |
953 |
return(0); |
954 |
for (y = top; y < bottom; y++) { |
955 |
if (getscan(y) == -1) |
956 |
return(-1); |
957 |
(*f)(scanline+left, right-left, p); |
958 |
} |
959 |
return((right-left)*(bottom-top)); |
960 |
} |
961 |
|
962 |
|
963 |
void |
964 |
addfix(scn, n) /* add fixation points to histogram */ |
965 |
COLR *scn; |
966 |
int n; |
967 |
{ |
968 |
if (tmCvColrs(lscan, TM_NOCHROM, scn, n)) |
969 |
goto tmerr; |
970 |
if (tmAddHisto(lscan, n, FIXWEIGHT)) |
971 |
goto tmerr; |
972 |
return; |
973 |
tmerr: |
974 |
quiterr("tone mapping error"); |
975 |
} |
976 |
|
977 |
|
978 |
make_tonemap() /* initialize tone mapping */ |
979 |
{ |
980 |
int flags, y; |
981 |
|
982 |
if (tmflags != TM_F_LINEAR && fname == NULL) { |
983 |
fprintf(stderr, "%s: cannot adjust tone of standard input\n", |
984 |
progname); |
985 |
tmflags = TM_F_LINEAR; |
986 |
} |
987 |
if (tmflags == TM_F_LINEAR) { /* linear with clamping */ |
988 |
setcolrcor(pow, 1.0/gamcor); |
989 |
return; |
990 |
} |
991 |
flags = tmflags; /* histogram adjustment */ |
992 |
if (greyscale) flags |= TM_F_BW; |
993 |
if (tmTop != NULL) { /* reuse old histogram if one */ |
994 |
tmDone(tmTop); |
995 |
tmTop->flags = flags; |
996 |
} else { /* else initialize */ |
997 |
if ((lscan = (TMbright *)malloc(xmax*sizeof(TMbright))) == NULL) |
998 |
goto memerr; |
999 |
if (greyscale) { |
1000 |
cscan = TM_NOCHROM; |
1001 |
if ((pscan = (BYTE *)malloc(sizeof(BYTE)*xmax)) == NULL) |
1002 |
goto memerr; |
1003 |
} else if ((pscan=cscan = (BYTE *)malloc(3*sizeof(BYTE)*xmax)) |
1004 |
== NULL) |
1005 |
goto memerr; |
1006 |
/* initialize tm library */ |
1007 |
if (tmInit(flags, stdprims, gamcor) == NULL) |
1008 |
goto memerr; |
1009 |
if (tmSetSpace(stdprims, WHTEFFICACY/exposure)) |
1010 |
goto tmerr; |
1011 |
/* compute picture histogram */ |
1012 |
for (y = 0; y < ymax; y++) { |
1013 |
getscan(y); |
1014 |
if (tmCvColrs(lscan, TM_NOCHROM, scanline, xmax)) |
1015 |
goto tmerr; |
1016 |
if (tmAddHisto(lscan, xmax, 1)) |
1017 |
goto tmerr; |
1018 |
} |
1019 |
} |
1020 |
tmDup(); /* add fixations to duplicate map */ |
1021 |
dobox(addfix, NULL); |
1022 |
/* (re)compute tone mapping */ |
1023 |
if (tmComputeMapping(gamcor, 0., 0.)) |
1024 |
goto tmerr; |
1025 |
return; |
1026 |
memerr: |
1027 |
quiterr("out of memory in make_tonemap"); |
1028 |
tmerr: |
1029 |
quiterr("tone mapping error"); |
1030 |
} |
1031 |
|
1032 |
|
1033 |
tmap_colrs(scn, len) /* apply tone mapping to scanline */ |
1034 |
register COLR *scn; |
1035 |
int len; |
1036 |
{ |
1037 |
register BYTE *ps; |
1038 |
|
1039 |
if (tmflags == TM_F_LINEAR) { |
1040 |
if (scale) |
1041 |
shiftcolrs(scn, len, scale); |
1042 |
colrs_gambs(scn, len); |
1043 |
return; |
1044 |
} |
1045 |
if (len > xmax) |
1046 |
quiterr("code error 1 in tmap_colrs"); |
1047 |
if (tmCvColrs(lscan, cscan, scn, len)) |
1048 |
goto tmerr; |
1049 |
if (tmMapPixels(pscan, lscan, cscan, len)) |
1050 |
goto tmerr; |
1051 |
ps = pscan; |
1052 |
if (greyscale) |
1053 |
while (len--) { |
1054 |
scn[0][RED] = scn[0][GRN] = scn[0][BLU] = *ps++; |
1055 |
scn[0][EXP] = COLXS; |
1056 |
scn++; |
1057 |
} |
1058 |
else |
1059 |
while (len--) { |
1060 |
scn[0][RED] = *ps++; |
1061 |
scn[0][GRN] = *ps++; |
1062 |
scn[0][BLU] = *ps++; |
1063 |
scn[0][EXP] = COLXS; |
1064 |
scn++; |
1065 |
} |
1066 |
return; |
1067 |
tmerr: |
1068 |
quiterr("tone mapping error"); |
1069 |
} |
1070 |
|
1071 |
|
1072 |
getmono() /* get monochrome data */ |
1073 |
{ |
1074 |
register unsigned char *dp; |
1075 |
register int x, err; |
1076 |
int y, errp; |
1077 |
short *cerr; |
1078 |
|
1079 |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
1080 |
quiterr("out of memory in getmono"); |
1081 |
dp = ourdata - 1; |
1082 |
for (y = 0; y < ymax; y++) { |
1083 |
getscan(y); |
1084 |
add2icon(y, scanline); |
1085 |
normcolrs(scanline, xmax, scale); |
1086 |
err = 0; |
1087 |
for (x = 0; x < xmax; x++) { |
1088 |
if (!(x&7)) |
1089 |
*++dp = 0; |
1090 |
errp = err; |
1091 |
err += normbright(scanline[x]) + cerr[x]; |
1092 |
if (err > 127) |
1093 |
err -= 255; |
1094 |
else |
1095 |
*dp |= 1<<(7-(x&07)); |
1096 |
err /= 3; |
1097 |
cerr[x] = err + errp; |
1098 |
} |
1099 |
} |
1100 |
free((void *)cerr); |
1101 |
} |
1102 |
|
1103 |
|
1104 |
add2icon(y, scan) /* add a scanline to our icon data */ |
1105 |
int y; |
1106 |
COLR *scan; |
1107 |
{ |
1108 |
static short cerr[ICONSIZ]; |
1109 |
static int ynext; |
1110 |
static char *dp; |
1111 |
COLR clr; |
1112 |
register int err; |
1113 |
register int x, ti; |
1114 |
int errp; |
1115 |
|
1116 |
if (iconheight == 0) { /* initialize */ |
1117 |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
1118 |
iconwidth = xmax; |
1119 |
iconheight = ymax; |
1120 |
} else if (xmax > ymax) { |
1121 |
iconwidth = ICONSIZ; |
1122 |
iconheight = ICONSIZ*ymax/xmax; |
1123 |
if (iconheight < 1) |
1124 |
iconheight = 1; |
1125 |
} else { |
1126 |
iconwidth = ICONSIZ*xmax/ymax; |
1127 |
if (iconwidth < 1) |
1128 |
iconwidth = 1; |
1129 |
iconheight = ICONSIZ; |
1130 |
} |
1131 |
ynext = 0; |
1132 |
dp = icondata - 1; |
1133 |
} |
1134 |
if (y < ynext*ymax/iconheight) /* skip this one */ |
1135 |
return; |
1136 |
err = 0; |
1137 |
for (x = 0; x < iconwidth; x++) { |
1138 |
if (!(x&7)) |
1139 |
*++dp = 0; |
1140 |
errp = err; |
1141 |
ti = x*xmax/iconwidth; |
1142 |
copycolr(clr, scan[ti]); |
1143 |
normcolrs(&clr, 1, scale); |
1144 |
err += normbright(clr) + cerr[x]; |
1145 |
if (err > 127) |
1146 |
err -= 255; |
1147 |
else |
1148 |
*dp |= 1<<(x&07); |
1149 |
err /= 3; |
1150 |
cerr[x] = err + errp; |
1151 |
} |
1152 |
ynext++; |
1153 |
} |
1154 |
|
1155 |
|
1156 |
getfull() /* get full (24-bit) data */ |
1157 |
{ |
1158 |
int y; |
1159 |
register uint32 *dp; |
1160 |
register uint16 *dph; |
1161 |
register int x; |
1162 |
/* initialize tone mapping */ |
1163 |
make_tonemap(); |
1164 |
/* read and convert file */ |
1165 |
dp = (uint32 *)ourdata; |
1166 |
dph = (uint16 *)ourdata; |
1167 |
for (y = 0; y < ymax; y++) { |
1168 |
getscan(y); |
1169 |
add2icon(y, scanline); |
1170 |
tmap_colrs(scanline, xmax); |
1171 |
switch (ourras->image->blue_mask) { |
1172 |
case 0xff: /* 24-bit RGB */ |
1173 |
for (x = 0; x < xmax; x++) |
1174 |
*dp++ = (uint32)scanline[x][RED] << 16 | |
1175 |
(uint32)scanline[x][GRN] << 8 | |
1176 |
(uint32)scanline[x][BLU] ; |
1177 |
break; |
1178 |
case 0xff0000: /* 24-bit BGR */ |
1179 |
for (x = 0; x < xmax; x++) |
1180 |
*dp++ = (uint32)scanline[x][RED] | |
1181 |
(uint32)scanline[x][GRN] << 8 | |
1182 |
(uint32)scanline[x][BLU] << 16 ; |
1183 |
break; |
1184 |
#if 0 |
1185 |
case 0x1f: /* 15-bit RGB */ |
1186 |
for (x = 0; x < xmax; x++) |
1187 |
*dph++ = (scanline[x][RED] << 7 & 0x7c00) | |
1188 |
(scanline[x][GRN] << 2 & 0x3e0) | |
1189 |
(unsigned)scanline[x][BLU] >> 3 ; |
1190 |
break; |
1191 |
case 0x7c00: /* 15-bit BGR */ |
1192 |
for (x = 0; x < xmax; x++) |
1193 |
*dph++ = (unsigned)scanline[x][RED] >> 3 | |
1194 |
(scanline[x][GRN] << 2 & 0x3e0) | |
1195 |
(scanline[x][BLU] << 7 & 0x7c00) ; |
1196 |
break; |
1197 |
#endif |
1198 |
default: /* unknown */ |
1199 |
if (ourvis.depth > 16) |
1200 |
for (x = 0; x < xmax; x++) { |
1201 |
*dp = ourras->image->red_mask & |
1202 |
ourras->image->red_mask*scanline[x][RED]/255; |
1203 |
*dp |= ourras->image->green_mask & |
1204 |
ourras->image->green_mask*scanline[x][GRN]/255; |
1205 |
*dp++ |= ourras->image->blue_mask & |
1206 |
ourras->image->blue_mask*scanline[x][BLU]/255; |
1207 |
} |
1208 |
else |
1209 |
for (x = 0; x < xmax; x++) { |
1210 |
*dph = ourras->image->red_mask & |
1211 |
ourras->image->red_mask*scanline[x][RED]/255; |
1212 |
*dph |= ourras->image->green_mask & |
1213 |
ourras->image->green_mask*scanline[x][GRN]/255; |
1214 |
*dph++ |= ourras->image->blue_mask & |
1215 |
ourras->image->blue_mask*scanline[x][BLU]/255; |
1216 |
} |
1217 |
break; |
1218 |
} |
1219 |
} |
1220 |
} |
1221 |
|
1222 |
|
1223 |
getgrey() /* get greyscale data */ |
1224 |
{ |
1225 |
int y; |
1226 |
register unsigned char *dp; |
1227 |
register int x; |
1228 |
/* initialize tone mapping */ |
1229 |
make_tonemap(); |
1230 |
/* read and convert file */ |
1231 |
dp = ourdata; |
1232 |
for (y = 0; y < ymax; y++) { |
1233 |
getscan(y); |
1234 |
add2icon(y, scanline); |
1235 |
tmap_colrs(scanline, xmax); |
1236 |
if (maxcolors < 256) |
1237 |
for (x = 0; x < xmax; x++) |
1238 |
*dp++ = ((int32)scanline[x][GRN] * |
1239 |
maxcolors + maxcolors/2) >> 8; |
1240 |
else |
1241 |
for (x = 0; x < xmax; x++) |
1242 |
*dp++ = scanline[x][GRN]; |
1243 |
} |
1244 |
for (x = 0; x < maxcolors; x++) |
1245 |
clrtab[x][RED] = clrtab[x][GRN] = |
1246 |
clrtab[x][BLU] = ((int32)x*256 + 128)/maxcolors; |
1247 |
} |
1248 |
|
1249 |
|
1250 |
getmapped() /* get color-mapped data */ |
1251 |
{ |
1252 |
int y; |
1253 |
/* make sure we can do it first */ |
1254 |
if (fname == NULL) |
1255 |
quiterr("cannot map colors from standard input"); |
1256 |
/* initialize tone mapping */ |
1257 |
make_tonemap(); |
1258 |
/* make histogram */ |
1259 |
if (new_histo((int32)xmax*ymax) == -1) |
1260 |
quiterr("cannot initialize histogram"); |
1261 |
for (y = 0; y < ymax; y++) { |
1262 |
if (getscan(y) < 0) |
1263 |
break; |
1264 |
add2icon(y, scanline); |
1265 |
tmap_colrs(scanline, xmax); |
1266 |
cnt_colrs(scanline, xmax); |
1267 |
} |
1268 |
/* map pixels */ |
1269 |
if (!new_clrtab(maxcolors)) |
1270 |
quiterr("cannot create color map"); |
1271 |
for (y = 0; y < ymax; y++) { |
1272 |
getscan(y); |
1273 |
tmap_colrs(scanline, xmax); |
1274 |
if (dither) |
1275 |
dith_colrs(ourdata+y*xmax, scanline, xmax); |
1276 |
else |
1277 |
map_colrs(ourdata+y*xmax, scanline, xmax); |
1278 |
} |
1279 |
} |
1280 |
|
1281 |
|
1282 |
scale_rcolors(xr, sf) /* scale color map */ |
1283 |
register XRASTER *xr; |
1284 |
double sf; |
1285 |
{ |
1286 |
register int i; |
1287 |
long maxv; |
1288 |
|
1289 |
if (xr->pixels == NULL) |
1290 |
return; |
1291 |
|
1292 |
sf = pow(sf, 1.0/gamcor); |
1293 |
maxv = 65535/sf; |
1294 |
|
1295 |
for (i = xr->ncolors; i--; ) { |
1296 |
xr->cdefs[i].red = xr->cdefs[i].red > maxv ? |
1297 |
65535 : |
1298 |
xr->cdefs[i].red * sf; |
1299 |
xr->cdefs[i].green = xr->cdefs[i].green > maxv ? |
1300 |
65535 : |
1301 |
xr->cdefs[i].green * sf; |
1302 |
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ? |
1303 |
65535 : |
1304 |
xr->cdefs[i].blue * sf; |
1305 |
} |
1306 |
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors); |
1307 |
} |
1308 |
|
1309 |
|
1310 |
getscan(y) |
1311 |
int y; |
1312 |
{ |
1313 |
static int trunced = -1; /* truncated file? */ |
1314 |
skipit: |
1315 |
if (trunced >= 0 && y >= trunced) { |
1316 |
memset(scanline, '\0', xmax*sizeof(COLR)); |
1317 |
return(-1); |
1318 |
} |
1319 |
if (y != cury) { |
1320 |
if (scanpos == NULL || scanpos[y] == -1) |
1321 |
return(-1); |
1322 |
if (fseek(fin, scanpos[y], 0) == -1) |
1323 |
quiterr("fseek error"); |
1324 |
cury = y; |
1325 |
} else if (scanpos != NULL && scanpos[y] == -1) |
1326 |
scanpos[y] = ftell(fin); |
1327 |
|
1328 |
if (freadcolrs(scanline, xmax, fin) < 0) { |
1329 |
fprintf(stderr, "%s: %s: unfinished picture\n", |
1330 |
progname, fname==NULL?"<stdin>":fname); |
1331 |
trunced = y; |
1332 |
goto skipit; |
1333 |
} |
1334 |
cury++; |
1335 |
return(0); |
1336 |
} |