1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: x11image.c,v 2.72 2006/05/29 17:31:25 greg Exp $"; |
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 <unistd.h> |
24 |
#include <sys/types.h> |
25 |
#include <sys/wait.h> |
26 |
#include <X11/Xlib.h> |
27 |
#include <X11/cursorfont.h> |
28 |
#include <X11/Xutil.h> |
29 |
#include <X11/Xatom.h> |
30 |
|
31 |
#include "color.h" |
32 |
#include "tonemap.h" |
33 |
#include "clrtab.h" |
34 |
#include "view.h" |
35 |
#include "x11raster.h" |
36 |
#include "random.h" |
37 |
|
38 |
#define FONTNAME "8x13" /* text font we'll use */ |
39 |
|
40 |
#define CTRL(c) ((c)-'@') |
41 |
|
42 |
#define BORWIDTH 5 /* border width */ |
43 |
|
44 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
45 |
|
46 |
#define FIXWEIGHT 20 /* weight to add for fixation points */ |
47 |
|
48 |
#define ourscreen DefaultScreen(thedisplay) |
49 |
#define ourroot RootWindow(thedisplay,ourscreen) |
50 |
|
51 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
52 |
|
53 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
54 |
|
55 |
double gamcor = 2.2; /* gamma correction */ |
56 |
char *gamstr = NULL; /* gamma value override */ |
57 |
|
58 |
int dither = 1; /* dither colors? */ |
59 |
int fast = 0; /* keep picture in Pixmap? */ |
60 |
|
61 |
char *dispname = NULL; /* our display name */ |
62 |
|
63 |
Window wind = 0; /* our output window */ |
64 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
65 |
int maxcolors = 0; /* maximum colors */ |
66 |
int greyscale = 0; /* in grey */ |
67 |
|
68 |
int scale = 0; /* scalefactor; power of two */ |
69 |
|
70 |
int xoff = 0; /* x image offset */ |
71 |
int yoff = 0; /* y image offset */ |
72 |
|
73 |
int parent = 0; /* number of children, -1 if child */ |
74 |
int sequential = 0; /* display images in sequence */ |
75 |
|
76 |
char *tout = "od"; /* output of 't' command */ |
77 |
int tinterv = 0; /* interval between mouse reports */ |
78 |
|
79 |
int tmflags = TM_F_LINEAR; /* tone mapping flags */ |
80 |
|
81 |
VIEW ourview = STDVIEW; /* image view parameters */ |
82 |
int gotview = 0; /* got parameters from file */ |
83 |
|
84 |
COLR *scanline; /* scan line buffer */ |
85 |
TMbright *lscan; /* encoded luminance scanline */ |
86 |
BYTE *cscan; /* encoded chroma scanline */ |
87 |
BYTE *pscan; /* compute pixel scanline */ |
88 |
|
89 |
RESOLU inpres; /* input resolution and ordering */ |
90 |
int xmax, ymax; /* picture dimensions */ |
91 |
int width, height; /* window size */ |
92 |
char *fname = NULL; /* input file name */ |
93 |
FILE *fin = NULL; /* input file */ |
94 |
long *scanpos = NULL; /* scan line positions in file */ |
95 |
int cury = 0; /* current scan location */ |
96 |
|
97 |
double exposure = 1.0; /* exposure compensation used */ |
98 |
|
99 |
int wrongformat = 0; /* input in another format? */ |
100 |
|
101 |
TMstruct *tmGlobal; /* base tone-mapping */ |
102 |
TMstruct *tmCurrent; /* curren tone-mapping */ |
103 |
|
104 |
GC ourgc; /* standard graphics context */ |
105 |
GC revgc; /* graphics context with GXinvert */ |
106 |
|
107 |
int *ourrank; /* our visual class ranking */ |
108 |
XVisualInfo ourvis; /* our visual */ |
109 |
XRASTER *ourras; /* our stored image */ |
110 |
unsigned char *ourdata; /* our image data */ |
111 |
|
112 |
struct { |
113 |
int xmin, ymin, xsiz, ysiz; |
114 |
} bbox = {0, 0, 0, 0}; /* current bbox */ |
115 |
|
116 |
char *geometry = NULL; /* geometry specification */ |
117 |
|
118 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
119 |
int iconwidth = 0, iconheight = 0; |
120 |
|
121 |
char *progname; |
122 |
|
123 |
char errmsg[128]; |
124 |
|
125 |
BYTE clrtab[256][3]; /* global color map */ |
126 |
|
127 |
|
128 |
Display *thedisplay; |
129 |
Atom closedownAtom, wmProtocolsAtom; |
130 |
|
131 |
int sigrecv; |
132 |
|
133 |
void onsig(int i) { sigrecv++; } |
134 |
|
135 |
typedef void doboxf_t(COLR *scn, int n, void *); |
136 |
|
137 |
static gethfunc headline; |
138 |
static void init(int argc, char **argv); |
139 |
static void quiterr(char *err); |
140 |
static int viscmp(XVisualInfo *v1, XVisualInfo *v2); |
141 |
static void getbestvis(void); |
142 |
static void getras(void); |
143 |
static void getevent(void); |
144 |
static int traceray(int xpos, int ypos); |
145 |
static int docom(XKeyPressedEvent *ekey); |
146 |
static void moveimage(XButtonPressedEvent *ebut); |
147 |
static void getbox(XButtonPressedEvent *ebut); |
148 |
static void trackrays(XButtonPressedEvent *ebut); |
149 |
static void revbox(int x0, int y0, int x1, int y1); |
150 |
static doboxf_t colavg; |
151 |
static doboxf_t addfix; |
152 |
static int avgbox(COLOR cavg); |
153 |
static int dobox(doboxf_t *f, void *p); |
154 |
static void make_tonemap(void); |
155 |
static void tmap_colrs(COLR *scn, int len); |
156 |
static void getmono(void); |
157 |
static void add2icon(int y, COLR *scan); |
158 |
static void getfull(void); |
159 |
static void getgrey(void); |
160 |
static void getmapped(void); |
161 |
static void scale_rcolors(XRASTER *xr, double sf); |
162 |
static int getscan(int y); |
163 |
|
164 |
|
165 |
int |
166 |
main(int argc, char *argv[]) |
167 |
{ |
168 |
int i; |
169 |
int pid; |
170 |
|
171 |
progname = argv[0]; |
172 |
fin = stdin; |
173 |
|
174 |
for (i = 1; i < argc; i++) |
175 |
if (argv[i][0] == '-') |
176 |
switch (argv[i][1]) { |
177 |
case 'c': /* number of colors */ |
178 |
maxcolors = atoi(argv[++i]); |
179 |
break; |
180 |
case 'b': /* greyscale only */ |
181 |
greyscale = !greyscale; |
182 |
break; |
183 |
case 'm': /* monochrome */ |
184 |
greyscale = 1; |
185 |
maxcolors = 2; |
186 |
break; |
187 |
case 'd': /* display or dither */ |
188 |
if (argv[i][2] == 'i') |
189 |
dispname = argv[++i]; |
190 |
else |
191 |
dither = !dither; |
192 |
break; |
193 |
case 'f': /* save pixmap */ |
194 |
fast = !fast; |
195 |
break; |
196 |
case 's': /* one at a time */ |
197 |
sequential = !sequential; |
198 |
break; |
199 |
case 'o': /* 't' output */ |
200 |
tout = argv[i]+2; |
201 |
break; |
202 |
case 't': /* msec interval */ |
203 |
tinterv = atoi(argv[++i]); |
204 |
break; |
205 |
case 'e': /* exposure comp. */ |
206 |
i++; |
207 |
if (argv[i][0] == 'a') { |
208 |
tmflags = TM_F_CAMERA; |
209 |
break; |
210 |
} |
211 |
if (argv[i][0] == 'h') { |
212 |
tmflags = TM_F_HUMAN; |
213 |
break; |
214 |
} |
215 |
if (argv[i][0] != '+' && argv[i][0] != '-') |
216 |
goto userr; |
217 |
scale = atoi(argv[i]); |
218 |
break; |
219 |
case 'g': /* gamma comp. */ |
220 |
if (argv[i][2] == 'e') |
221 |
geometry = argv[++i]; |
222 |
else |
223 |
gamstr = argv[++i]; |
224 |
break; |
225 |
default: |
226 |
goto userr; |
227 |
} |
228 |
else if (argv[i][0] == '=') |
229 |
geometry = argv[i]; |
230 |
else |
231 |
break; |
232 |
|
233 |
if (i > argc) |
234 |
goto userr; |
235 |
while (i < argc-1) { |
236 |
sigrecv = 0; |
237 |
signal(SIGCONT, onsig); |
238 |
if ((pid=fork()) == 0) { /* a child for each picture */ |
239 |
parent = -1; |
240 |
break; |
241 |
} |
242 |
if (pid < 0) |
243 |
quiterr("fork failed"); |
244 |
parent++; |
245 |
while (!sigrecv) |
246 |
pause(); /* wait for wake-up call */ |
247 |
i++; |
248 |
} |
249 |
if (i < argc) { /* open picture file */ |
250 |
fname = argv[i]; |
251 |
fin = fopen(fname, "r"); |
252 |
if (fin == NULL) |
253 |
quiterr("cannot open picture file"); |
254 |
} |
255 |
/* get header */ |
256 |
getheader(fin, headline, NULL); |
257 |
/* get picture dimensions */ |
258 |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
259 |
quiterr("bad picture format"); |
260 |
xmax = scanlen(&inpres); |
261 |
ymax = numscans(&inpres); |
262 |
/* set view parameters */ |
263 |
if (gotview && setview(&ourview) != NULL) |
264 |
gotview = 0; |
265 |
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
266 |
quiterr("out of memory"); |
267 |
|
268 |
init(argc, argv); /* get file and open window */ |
269 |
|
270 |
for ( ; ; ) |
271 |
getevent(); /* main loop */ |
272 |
userr: |
273 |
fprintf(stderr, |
274 |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] hdr ..\n", |
275 |
progname); |
276 |
exit(1); |
277 |
} |
278 |
|
279 |
|
280 |
static int |
281 |
headline( /* get relevant info from header */ |
282 |
char *s, |
283 |
void *p |
284 |
) |
285 |
{ |
286 |
char fmt[32]; |
287 |
|
288 |
if (isexpos(s)) |
289 |
exposure *= exposval(s); |
290 |
else if (formatval(fmt, s)) |
291 |
wrongformat = strcmp(fmt, COLRFMT); |
292 |
else if (isview(s) && sscanview(&ourview, s) > 0) |
293 |
gotview++; |
294 |
return(0); |
295 |
} |
296 |
|
297 |
|
298 |
static void |
299 |
init( /* get data and open window */ |
300 |
int argc, |
301 |
char **argv |
302 |
) |
303 |
{ |
304 |
XSetWindowAttributes ourwinattr; |
305 |
XClassHint xclshints; |
306 |
XWMHints xwmhints; |
307 |
XSizeHints xszhints; |
308 |
XTextProperty windowName, iconName; |
309 |
XGCValues xgcv; |
310 |
char *name; |
311 |
register int i; |
312 |
|
313 |
if (fname != NULL) { |
314 |
scanpos = (long *)malloc(ymax*sizeof(long)); |
315 |
if (scanpos == NULL) |
316 |
quiterr("out of memory"); |
317 |
for (i = 0; i < ymax; i++) |
318 |
scanpos[i] = -1; |
319 |
name = fname; |
320 |
} else |
321 |
name = progname; |
322 |
/* remove directory prefix from name */ |
323 |
for (i = strlen(name); i-- > 0; ) |
324 |
if (name[i] == '/') |
325 |
break; |
326 |
name += i+1; |
327 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
328 |
quiterr("cannot open display"); |
329 |
/* set gamma value */ |
330 |
if (gamstr == NULL) /* get it from the X server */ |
331 |
gamstr = XGetDefault(thedisplay, "radiance", "gamma"); |
332 |
if (gamstr == NULL) /* get it from the environment */ |
333 |
gamstr = getenv("DISPLAY_GAMMA"); |
334 |
if (gamstr != NULL) |
335 |
gamcor = atof(gamstr); |
336 |
/* get best visual for default screen */ |
337 |
getbestvis(); |
338 |
/* store image */ |
339 |
getras(); |
340 |
/* get size and position */ |
341 |
xszhints.flags = 0; |
342 |
xszhints.width = xmax; xszhints.height = ymax; |
343 |
if (geometry != NULL) { |
344 |
i = XParseGeometry(geometry, &xszhints.x, &xszhints.y, |
345 |
(unsigned *)&xszhints.width, |
346 |
(unsigned *)&xszhints.height); |
347 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
348 |
xszhints.flags |= USSize; |
349 |
else |
350 |
xszhints.flags |= PSize; |
351 |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
352 |
xszhints.flags |= USPosition; |
353 |
if (i & XNegative) |
354 |
xszhints.x += DisplayWidth(thedisplay, |
355 |
ourscreen)-1-xszhints.width-2*BORWIDTH; |
356 |
if (i & YNegative) |
357 |
xszhints.y += DisplayHeight(thedisplay, |
358 |
ourscreen)-1-xszhints.height-2*BORWIDTH; |
359 |
} |
360 |
} |
361 |
/* open window */ |
362 |
i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel; |
363 |
ourwinattr.border_pixel = ourwhite; |
364 |
ourwinattr.background_pixel = ourblack; |
365 |
if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) { |
366 |
ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual); |
367 |
i |= CWColormap; |
368 |
} |
369 |
ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask| |
370 |
ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask; |
371 |
ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross); |
372 |
wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y, |
373 |
xszhints.width, xszhints.height, BORWIDTH, |
374 |
ourvis.depth, InputOutput, ourvis.visual, |
375 |
i, &ourwinattr); |
376 |
if (wind == 0) |
377 |
quiterr("cannot create window"); |
378 |
width = xmax; |
379 |
height = ymax; |
380 |
/* prepare graphics drawing context */ |
381 |
if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
382 |
quiterr("cannot get font"); |
383 |
xgcv.foreground = ourblack; |
384 |
xgcv.background = ourwhite; |
385 |
ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
386 |
GCFont, &xgcv); |
387 |
xgcv.function = GXinvert; |
388 |
revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
389 |
GCFunction, &xgcv); |
390 |
|
391 |
/* set up the window manager */ |
392 |
xwmhints.flags = InputHint|IconPixmapHint; |
393 |
xwmhints.input = True; |
394 |
xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
395 |
wind, icondata, iconwidth, iconheight); |
396 |
|
397 |
windowName.encoding = iconName.encoding = XA_STRING; |
398 |
windowName.format = iconName.format = 8; |
399 |
windowName.value = (u_char *)name; |
400 |
windowName.nitems = strlen((char *)windowName.value); |
401 |
iconName.value = (u_char *)name; |
402 |
iconName.nitems = strlen((char *)windowName.value); |
403 |
|
404 |
xclshints.res_name = NULL; |
405 |
xclshints.res_class = "Ximage"; |
406 |
XSetWMProperties(thedisplay, wind, &windowName, &iconName, |
407 |
argv, argc, &xszhints, &xwmhints, &xclshints); |
408 |
closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False); |
409 |
wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False); |
410 |
XSetWMProtocols(thedisplay, wind, &closedownAtom, 1); |
411 |
|
412 |
XMapWindow(thedisplay, wind); |
413 |
} /* end of init */ |
414 |
|
415 |
|
416 |
static void |
417 |
quiterr( /* print message and exit */ |
418 |
char *err |
419 |
) |
420 |
{ |
421 |
register int es; |
422 |
int cs; |
423 |
|
424 |
if ( (es = err != NULL) ) |
425 |
fprintf(stderr, "%s: %s: %s\n", progname, |
426 |
fname==NULL?"<stdin>":fname, err); |
427 |
if (thedisplay != NULL) |
428 |
XCloseDisplay(thedisplay); |
429 |
if ((parent < 0) & (sigrecv == 0)) |
430 |
kill(getppid(), SIGCONT); |
431 |
while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
432 |
if (es == 0) |
433 |
es = cs>>8 & 0xff; |
434 |
parent--; |
435 |
} |
436 |
exit(es); |
437 |
} |
438 |
|
439 |
|
440 |
static int |
441 |
viscmp( /* compare visual to see which is better, descending */ |
442 |
register XVisualInfo *v1, |
443 |
register XVisualInfo *v2 |
444 |
) |
445 |
{ |
446 |
int bad1 = 0, bad2 = 0; |
447 |
register int *rp; |
448 |
|
449 |
if (v1->class == v2->class) { |
450 |
if ((v1->class == TrueColor) | (v1->class == DirectColor)) { |
451 |
/* prefer 24-bit */ |
452 |
if ((v1->depth == 24) & (v2->depth > 24)) |
453 |
return(-1); |
454 |
if ((v1->depth > 24) & (v2->depth == 24)) |
455 |
return(1); |
456 |
/* go for maximum depth otherwise */ |
457 |
return(v2->depth - v1->depth); |
458 |
} |
459 |
/* don't be too greedy */ |
460 |
if ((maxcolors <= 1<<v1->depth) & (maxcolors <= 1<<v2->depth)) |
461 |
return(v1->depth - v2->depth); |
462 |
return(v2->depth - v1->depth); |
463 |
} |
464 |
/* prefer Pseudo when < 15-bit */ |
465 |
if ((v1->class == TrueColor) | (v1->class == DirectColor) && |
466 |
v1->depth < 15) |
467 |
bad1 = 1; |
468 |
if ((v2->class == TrueColor) | (v2->class == DirectColor) && |
469 |
v2->depth < 15) |
470 |
bad2 = -1; |
471 |
if (bad1 | bad2) |
472 |
return(bad1+bad2); |
473 |
/* otherwise, use class ranking */ |
474 |
for (rp = ourrank; *rp != -1; rp++) { |
475 |
if (v1->class == *rp) |
476 |
return(-1); |
477 |
if (v2->class == *rp) |
478 |
return(1); |
479 |
} |
480 |
return(0); |
481 |
} |
482 |
|
483 |
|
484 |
static void |
485 |
getbestvis(void) /* get the best visual for this screen */ |
486 |
{ |
487 |
#ifdef DEBUG |
488 |
static char vistype[][12] = { |
489 |
"StaticGray", |
490 |
"GrayScale", |
491 |
"StaticColor", |
492 |
"PseudoColor", |
493 |
"TrueColor", |
494 |
"DirectColor" |
495 |
}; |
496 |
#endif |
497 |
static int rankings[3][6] = { |
498 |
{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
499 |
{PseudoColor,GrayScale,StaticGray,-1}, |
500 |
{PseudoColor,GrayScale,StaticGray,-1} |
501 |
}; |
502 |
XVisualInfo *xvi; |
503 |
int vismatched; |
504 |
register int i, j; |
505 |
|
506 |
if (greyscale) { |
507 |
ourrank = rankings[2]; |
508 |
if (maxcolors < 2) maxcolors = 256; |
509 |
} else if (maxcolors >= 2 && maxcolors <= 256) |
510 |
ourrank = rankings[1]; |
511 |
else { |
512 |
ourrank = rankings[0]; |
513 |
maxcolors = 256; |
514 |
} |
515 |
/* find best visual */ |
516 |
ourvis.screen = ourscreen; |
517 |
xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
518 |
if (xvi == NULL) |
519 |
quiterr("no visuals for this screen!"); |
520 |
#ifdef DEBUG |
521 |
fprintf(stderr, "Supported visuals:\n"); |
522 |
for (i = 0; i < vismatched; i++) |
523 |
fprintf(stderr, "\ttype %s, depth %d\n", |
524 |
vistype[xvi[i].class], xvi[i].depth); |
525 |
#endif |
526 |
for (i = 0, j = 1; j < vismatched; j++) |
527 |
if (viscmp(&xvi[i],&xvi[j]) > 0) |
528 |
i = j; |
529 |
/* compare to least acceptable */ |
530 |
for (j = 0; ourrank[j++] != -1; ) |
531 |
; |
532 |
ourvis.class = ourrank[--j]; |
533 |
ourvis.depth = 1; |
534 |
if (viscmp(&xvi[i],&ourvis) > 0) |
535 |
quiterr("inadequate visuals on this screen"); |
536 |
/* OK, we'll use it */ |
537 |
ourvis = xvi[i]; |
538 |
#ifdef DEBUG |
539 |
fprintf(stderr, "Selected visual type %s, depth %d\n", |
540 |
vistype[ourvis.class], ourvis.depth); |
541 |
#endif |
542 |
/* make appropriate adjustments */ |
543 |
if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
544 |
greyscale = 1; |
545 |
if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
546 |
maxcolors = ourvis.colormap_size; |
547 |
if (ourvis.class == StaticGray) { |
548 |
ourblack = 0; |
549 |
ourwhite = 255; |
550 |
} else if (ourvis.class == PseudoColor) { |
551 |
ourblack = BlackPixel(thedisplay,ourscreen); |
552 |
ourwhite = WhitePixel(thedisplay,ourscreen); |
553 |
if ((ourblack|ourwhite) & ~255L) { |
554 |
ourblack = 0; |
555 |
ourwhite = 1; |
556 |
} |
557 |
if (maxcolors > 4) |
558 |
maxcolors -= 2; |
559 |
} else { |
560 |
ourblack = 0; |
561 |
ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
562 |
} |
563 |
XFree((char *)xvi); |
564 |
} |
565 |
|
566 |
|
567 |
static void |
568 |
getras(void) /* get raster file */ |
569 |
{ |
570 |
if (maxcolors <= 2) { /* monochrome */ |
571 |
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
572 |
if (ourdata == NULL) |
573 |
goto fail; |
574 |
ourras = make_raster(thedisplay, &ourvis, 1, (char *)ourdata, |
575 |
xmax, ymax, 8); |
576 |
if (ourras == NULL) |
577 |
goto fail; |
578 |
getmono(); |
579 |
} else if ((ourvis.class == TrueColor) | (ourvis.class == DirectColor)) { |
580 |
int datsiz = ourvis.depth>16 ? sizeof(int32) : sizeof(int16); |
581 |
ourdata = (unsigned char *)malloc(datsiz*xmax*ymax); |
582 |
if (ourdata == NULL) |
583 |
goto fail; |
584 |
ourras = make_raster(thedisplay, &ourvis, datsiz*8, |
585 |
(char *)ourdata, xmax, ymax, datsiz*8); |
586 |
if (ourras == NULL) |
587 |
goto fail; |
588 |
getfull(); |
589 |
} else { |
590 |
ourdata = (unsigned char *)malloc(xmax*ymax); |
591 |
if (ourdata == NULL) |
592 |
goto fail; |
593 |
ourras = make_raster(thedisplay, &ourvis, 8, (char *)ourdata, |
594 |
xmax, ymax, 8); |
595 |
if (ourras == NULL) |
596 |
goto fail; |
597 |
if (greyscale) |
598 |
getgrey(); |
599 |
else |
600 |
getmapped(); |
601 |
if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab)) |
602 |
goto fail; |
603 |
} |
604 |
return; |
605 |
fail: |
606 |
quiterr("could not create raster image"); |
607 |
} |
608 |
|
609 |
|
610 |
static void |
611 |
getevent(void) /* process the next event */ |
612 |
{ |
613 |
XEvent xev; |
614 |
|
615 |
XNextEvent(thedisplay, &xev); |
616 |
switch ((int)xev.type) { |
617 |
case KeyPress: |
618 |
docom(&xev.xkey); |
619 |
break; |
620 |
case ConfigureNotify: |
621 |
width = xev.xconfigure.width; |
622 |
height = xev.xconfigure.height; |
623 |
break; |
624 |
case MapNotify: |
625 |
map_rcolors(ourras, wind); |
626 |
if (fast) |
627 |
make_rpixmap(ourras, wind); |
628 |
if ((!sequential) & (parent < 0) & (sigrecv == 0)) { |
629 |
kill(getppid(), SIGCONT); |
630 |
sigrecv--; |
631 |
} |
632 |
break; |
633 |
case UnmapNotify: |
634 |
if (!fast) |
635 |
unmap_rcolors(ourras); |
636 |
break; |
637 |
case Expose: |
638 |
redraw(xev.xexpose.x, xev.xexpose.y, |
639 |
xev.xexpose.width, xev.xexpose.height); |
640 |
break; |
641 |
case ButtonPress: |
642 |
if (xev.xbutton.state & (ShiftMask|ControlMask)) |
643 |
moveimage(&xev.xbutton); |
644 |
else |
645 |
switch (xev.xbutton.button) { |
646 |
case Button1: |
647 |
getbox(&xev.xbutton); |
648 |
break; |
649 |
case Button2: |
650 |
traceray(xev.xbutton.x, xev.xbutton.y); |
651 |
break; |
652 |
case Button3: |
653 |
trackrays(&xev.xbutton); |
654 |
break; |
655 |
} |
656 |
break; |
657 |
case ClientMessage: |
658 |
if ((xev.xclient.message_type == wmProtocolsAtom) && |
659 |
(xev.xclient.data.l[0] == closedownAtom)) |
660 |
quiterr(NULL); |
661 |
break; |
662 |
} |
663 |
} |
664 |
|
665 |
|
666 |
static int |
667 |
traceray( /* print requested pixel data */ |
668 |
int xpos, |
669 |
int ypos |
670 |
) |
671 |
{ |
672 |
RREAL hv[2]; |
673 |
FVECT rorg, rdir; |
674 |
COLOR cval; |
675 |
register char *cp; |
676 |
|
677 |
bbox.xmin = xpos; bbox.xsiz = 1; |
678 |
bbox.ymin = ypos; bbox.ysiz = 1; |
679 |
avgbox(cval); |
680 |
scalecolor(cval, 1./exposure); |
681 |
pix2loc(hv, &inpres, xpos-xoff, ypos-yoff); |
682 |
if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
683 |
rorg[0] = rorg[1] = rorg[2] = |
684 |
rdir[0] = rdir[1] = rdir[2] = 0.; |
685 |
|
686 |
for (cp = tout; *cp; cp++) /* print what they asked for */ |
687 |
switch (*cp) { |
688 |
case 'o': /* origin */ |
689 |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
690 |
break; |
691 |
case 'd': /* direction */ |
692 |
printf("%e %e %e ", rdir[0], rdir[1], rdir[2]); |
693 |
break; |
694 |
case 'v': /* radiance value */ |
695 |
printf("%e %e %e ", colval(cval,RED), |
696 |
colval(cval,GRN), colval(cval,BLU)); |
697 |
break; |
698 |
case 'l': /* luminance */ |
699 |
printf("%e ", luminance(cval)); |
700 |
break; |
701 |
case 'p': /* pixel position */ |
702 |
printf("%d %d ", (int)(hv[0]*inpres.xr), |
703 |
(int)(hv[1]*inpres.yr)); |
704 |
break; |
705 |
} |
706 |
putchar('\n'); |
707 |
fflush(stdout); |
708 |
return(0); |
709 |
} |
710 |
|
711 |
|
712 |
static int |
713 |
docom( /* execute command */ |
714 |
XKeyPressedEvent *ekey |
715 |
) |
716 |
{ |
717 |
char buf[80]; |
718 |
COLOR cval; |
719 |
XColor cvx; |
720 |
int com, n; |
721 |
double comp; |
722 |
RREAL hv[2]; |
723 |
|
724 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
725 |
if (n == 0) |
726 |
return(0); |
727 |
com = buf[0]; |
728 |
switch (com) { /* interpret command */ |
729 |
case 'q': |
730 |
case 'Q': |
731 |
case CTRL('D'): /* quit */ |
732 |
quiterr(NULL); |
733 |
case '\n': |
734 |
case '\r': |
735 |
case 'l': |
736 |
case 'c': /* value */ |
737 |
if (!avgbox(cval)) |
738 |
return(-1); |
739 |
switch (com) { |
740 |
case '\n': |
741 |
case '\r': /* radiance */ |
742 |
sprintf(buf, "%.3f", intens(cval)/exposure); |
743 |
break; |
744 |
case 'l': /* luminance */ |
745 |
sprintf(buf, "%.1fL", luminance(cval)/exposure); |
746 |
break; |
747 |
case 'c': /* color */ |
748 |
comp = pow(2.0, (double)scale); |
749 |
sprintf(buf, "(%.2f,%.2f,%.2f)", |
750 |
colval(cval,RED)*comp, |
751 |
colval(cval,GRN)*comp, |
752 |
colval(cval,BLU)*comp); |
753 |
break; |
754 |
} |
755 |
XDrawImageString(thedisplay, wind, ourgc, |
756 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf)); |
757 |
return(0); |
758 |
case 'i': /* identify (contour) */ |
759 |
if (ourras->pixels == NULL) |
760 |
return(-1); |
761 |
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)]; |
762 |
n = ourras->pmap[n]; |
763 |
cvx.pixel = ourras->cdefs[n].pixel; |
764 |
cvx.red = random() & 65535; |
765 |
cvx.green = random() & 65535; |
766 |
cvx.blue = random() & 65535; |
767 |
cvx.flags = DoRed|DoGreen|DoBlue; |
768 |
XStoreColor(thedisplay, ourras->cmap, &cvx); |
769 |
return(0); |
770 |
case 'p': /* position */ |
771 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
772 |
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
773 |
(int)(hv[1]*inpres.yr)); |
774 |
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
775 |
buf, strlen(buf)); |
776 |
return(0); |
777 |
case 't': /* trace */ |
778 |
return(traceray(ekey->x, ekey->y)); |
779 |
case 'a': /* auto exposure */ |
780 |
if (fname == NULL) |
781 |
return(-1); |
782 |
tmflags = TM_F_CAMERA; |
783 |
strcpy(buf, "auto exposure..."); |
784 |
goto remap; |
785 |
case 'h': /* human response */ |
786 |
if (fname == NULL) |
787 |
return(-1); |
788 |
tmflags = TM_F_HUMAN; |
789 |
strcpy(buf, "human exposure..."); |
790 |
goto remap; |
791 |
case '=': /* adjust exposure */ |
792 |
case '@': /* adaptation level */ |
793 |
if (!avgbox(cval)) |
794 |
return(-1); |
795 |
comp = bright(cval); |
796 |
if (comp < 1e-20) { |
797 |
XBell(thedisplay, 0); |
798 |
return(-1); |
799 |
} |
800 |
if (com == '@') |
801 |
comp = 106./exposure/ |
802 |
pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5); |
803 |
else |
804 |
comp = .5/comp; |
805 |
comp = log(comp)/.69315 - scale; |
806 |
n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
807 |
if (tmflags != TM_F_LINEAR) |
808 |
tmflags = TM_F_LINEAR; /* turn off tone mapping */ |
809 |
else { |
810 |
if (n == 0) /* else check if any change */ |
811 |
return(0); |
812 |
scale_rcolors(ourras, pow(2.0, (double)n)); |
813 |
} |
814 |
scale += n; |
815 |
sprintf(buf, "%+d", scale); |
816 |
remap: |
817 |
XDrawImageString(thedisplay, wind, ourgc, |
818 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf)); |
819 |
XFlush(thedisplay); |
820 |
/* free(ourdata); This is done in XDestroyImage()! */ |
821 |
free_raster(ourras); |
822 |
getras(); |
823 |
/* fall through */ |
824 |
case CTRL('R'): /* redraw */ |
825 |
case CTRL('L'): |
826 |
unmap_rcolors(ourras); |
827 |
XClearWindow(thedisplay, wind); |
828 |
map_rcolors(ourras, wind); |
829 |
if (fast) |
830 |
make_rpixmap(ourras, wind); |
831 |
redraw(0, 0, width, height); |
832 |
return(0); |
833 |
case 'f': /* turn on fast redraw */ |
834 |
fast = 1; |
835 |
make_rpixmap(ourras, wind); |
836 |
return(0); |
837 |
case 'F': /* turn off fast redraw */ |
838 |
fast = 0; |
839 |
free_rpixmap(ourras); |
840 |
return(0); |
841 |
case '0': /* recenter origin */ |
842 |
if ((xoff == 0) & (yoff == 0)) |
843 |
return(0); |
844 |
xoff = yoff = 0; |
845 |
XClearWindow(thedisplay, wind); |
846 |
redraw(0, 0, width, height); |
847 |
return(0); |
848 |
case ' ': /* clear */ |
849 |
redraw(bbox.xmin, bbox.ymin, bbox.xsiz, bbox.ysiz); |
850 |
return(0); |
851 |
default: |
852 |
XBell(thedisplay, 0); |
853 |
return(-1); |
854 |
} |
855 |
} |
856 |
|
857 |
|
858 |
static void |
859 |
moveimage( /* shift the image */ |
860 |
XButtonPressedEvent *ebut |
861 |
) |
862 |
{ |
863 |
XEvent e; |
864 |
int mxo, myo; |
865 |
|
866 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
867 |
while (e.type == MotionNotify) { |
868 |
mxo = e.xmotion.x; |
869 |
myo = e.xmotion.y; |
870 |
revline(ebut->x, ebut->y, mxo, myo); |
871 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
872 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
873 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
874 |
revline(ebut->x, ebut->y, mxo, myo); |
875 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
876 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
877 |
} |
878 |
xoff += e.xbutton.x - ebut->x; |
879 |
yoff += e.xbutton.y - ebut->y; |
880 |
XClearWindow(thedisplay, wind); |
881 |
redraw(0, 0, width, height); |
882 |
} |
883 |
|
884 |
|
885 |
static void |
886 |
getbox( /* get new bbox */ |
887 |
XButtonPressedEvent *ebut |
888 |
) |
889 |
{ |
890 |
XEvent e; |
891 |
|
892 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
893 |
while (e.type == MotionNotify) { |
894 |
revbox(ebut->x, ebut->y, bbox.xmin = e.xmotion.x, bbox.ymin = e.xmotion.y); |
895 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
896 |
revbox(ebut->x, ebut->y, bbox.xmin, bbox.ymin); |
897 |
} |
898 |
bbox.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x); |
899 |
bbox.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y); |
900 |
if (bbox.xmin > ebut->x) { |
901 |
bbox.xsiz = bbox.xmin - ebut->x + 1; |
902 |
bbox.xmin = ebut->x; |
903 |
} else { |
904 |
bbox.xsiz = ebut->x - bbox.xmin + 1; |
905 |
} |
906 |
if (bbox.ymin > ebut->y) { |
907 |
bbox.ysiz = bbox.ymin - ebut->y + 1; |
908 |
bbox.ymin = ebut->y; |
909 |
} else { |
910 |
bbox.ysiz = ebut->y - bbox.ymin + 1; |
911 |
} |
912 |
} |
913 |
|
914 |
|
915 |
static void |
916 |
trackrays( /* trace rays as mouse moves */ |
917 |
XButtonPressedEvent *ebut |
918 |
) |
919 |
{ |
920 |
XEvent e; |
921 |
unsigned long lastrept; |
922 |
|
923 |
traceray(ebut->x, ebut->y); |
924 |
lastrept = ebut->time; |
925 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
926 |
while (e.type == MotionNotify) { |
927 |
if (e.xmotion.time >= lastrept + tinterv) { |
928 |
traceray(e.xmotion.x, e.xmotion.y); |
929 |
lastrept = e.xmotion.time; |
930 |
} |
931 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
932 |
} |
933 |
} |
934 |
|
935 |
|
936 |
static void |
937 |
revbox( /* draw bbox with reversed lines */ |
938 |
int x0, |
939 |
int y0, |
940 |
int x1, |
941 |
int y1 |
942 |
) |
943 |
{ |
944 |
revline(x0, y0, x1, y0); |
945 |
revline(x0, y1, x1, y1); |
946 |
revline(x0, y0, x0, y1); |
947 |
revline(x1, y0, x1, y1); |
948 |
} |
949 |
|
950 |
|
951 |
static void |
952 |
colavg( |
953 |
register COLR *scn, |
954 |
register int n, |
955 |
void *cavg |
956 |
) |
957 |
{ |
958 |
COLOR col; |
959 |
|
960 |
while (n--) { |
961 |
colr_color(col, *scn++); |
962 |
addcolor((COLORV*)cavg, col); |
963 |
} |
964 |
} |
965 |
|
966 |
|
967 |
static int |
968 |
avgbox( /* average color over current bbox */ |
969 |
COLOR cavg |
970 |
) |
971 |
{ |
972 |
double d; |
973 |
register int rval; |
974 |
|
975 |
setcolor(cavg, 0., 0., 0.); |
976 |
rval = dobox(colavg, (void *)cavg); |
977 |
if (rval > 0) { |
978 |
d = 1./rval; |
979 |
scalecolor(cavg, d); |
980 |
} |
981 |
return(rval); |
982 |
} |
983 |
|
984 |
|
985 |
static int |
986 |
dobox( /* run function over bbox */ |
987 |
//void (*f)(), /* function to call for each subscan */ |
988 |
doboxf_t *f, /* function to call for each subscan */ |
989 |
void *p /* pointer to private data */ |
990 |
) |
991 |
{ |
992 |
int left, right, top, bottom; |
993 |
int y; |
994 |
|
995 |
left = bbox.xmin - xoff; |
996 |
right = left + bbox.xsiz; |
997 |
if (left < 0) |
998 |
left = 0; |
999 |
if (right > xmax) |
1000 |
right = xmax; |
1001 |
if (left >= right) |
1002 |
return(0); |
1003 |
top = bbox.ymin - yoff; |
1004 |
bottom = top + bbox.ysiz; |
1005 |
if (top < 0) |
1006 |
top = 0; |
1007 |
if (bottom > ymax) |
1008 |
bottom = ymax; |
1009 |
if (top >= bottom) |
1010 |
return(0); |
1011 |
for (y = top; y < bottom; y++) { |
1012 |
if (getscan(y) == -1) |
1013 |
return(-1); |
1014 |
(*f)(scanline+left, right-left, p); |
1015 |
} |
1016 |
return((right-left)*(bottom-top)); |
1017 |
} |
1018 |
|
1019 |
|
1020 |
static void |
1021 |
addfix( /* add fixation points to histogram */ |
1022 |
COLR *scn, |
1023 |
int n, |
1024 |
void *p |
1025 |
) |
1026 |
{ |
1027 |
TMstruct * tms = (TMstruct *)p; |
1028 |
|
1029 |
if (tmCvColrs(tms, lscan, TM_NOCHROM, scn, n)) |
1030 |
goto tmerr; |
1031 |
if (tmAddHisto(tms, lscan, n, FIXWEIGHT)) |
1032 |
goto tmerr; |
1033 |
return; |
1034 |
tmerr: |
1035 |
quiterr("tone mapping error"); |
1036 |
} |
1037 |
|
1038 |
|
1039 |
static void |
1040 |
make_tonemap(void) /* initialize tone mapping */ |
1041 |
{ |
1042 |
int flags, y; |
1043 |
|
1044 |
if (tmflags != TM_F_LINEAR && fname == NULL) { |
1045 |
fprintf(stderr, "%s: cannot adjust tone of standard input\n", |
1046 |
progname); |
1047 |
tmflags = TM_F_LINEAR; |
1048 |
} |
1049 |
if (tmflags == TM_F_LINEAR) { /* linear with clamping */ |
1050 |
setcolrcor(pow, 1.0/gamcor); |
1051 |
return; |
1052 |
} |
1053 |
flags = tmflags; /* histogram adjustment */ |
1054 |
if (greyscale) flags |= TM_F_BW; |
1055 |
if (tmGlobal != NULL) { /* reuse old histogram if one */ |
1056 |
tmDone(tmCurrent); tmCurrent = NULL; |
1057 |
tmGlobal->flags = flags; |
1058 |
} else { /* else initialize */ |
1059 |
if ((lscan = (TMbright *)malloc(xmax*sizeof(TMbright))) == NULL) |
1060 |
goto memerr; |
1061 |
if (greyscale) { |
1062 |
cscan = TM_NOCHROM; |
1063 |
if ((pscan = (BYTE *)malloc(sizeof(BYTE)*xmax)) == NULL) |
1064 |
goto memerr; |
1065 |
} else if ((pscan=cscan = (BYTE *)malloc(3*sizeof(BYTE)*xmax)) |
1066 |
== NULL) |
1067 |
goto memerr; |
1068 |
/* initialize tm library */ |
1069 |
tmGlobal = tmInit(flags, stdprims, gamcor); |
1070 |
if (tmGlobal == NULL) |
1071 |
goto memerr; |
1072 |
if (tmSetSpace(tmGlobal, stdprims, WHTEFFICACY/exposure, NULL)) |
1073 |
goto tmerr; |
1074 |
/* compute picture histogram */ |
1075 |
for (y = 0; y < ymax; y++) { |
1076 |
getscan(y); |
1077 |
if (tmCvColrs(tmGlobal, lscan, TM_NOCHROM, |
1078 |
scanline, xmax)) |
1079 |
goto tmerr; |
1080 |
if (tmAddHisto(tmGlobal, lscan, xmax, 1)) |
1081 |
goto tmerr; |
1082 |
} |
1083 |
} |
1084 |
tmCurrent = tmDup(tmGlobal); /* add fixations to duplicate map */ |
1085 |
dobox(addfix, (void *)tmCurrent); |
1086 |
/* (re)compute tone mapping */ |
1087 |
if (tmComputeMapping(tmCurrent, gamcor, 0., 0.)) |
1088 |
goto tmerr; |
1089 |
return; |
1090 |
memerr: |
1091 |
quiterr("out of memory in make_tonemap"); |
1092 |
tmerr: |
1093 |
quiterr("tone mapping error"); |
1094 |
} |
1095 |
|
1096 |
|
1097 |
static void |
1098 |
tmap_colrs( /* apply tone mapping to scanline */ |
1099 |
register COLR *scn, |
1100 |
int len |
1101 |
) |
1102 |
{ |
1103 |
register BYTE *ps; |
1104 |
|
1105 |
if (tmflags == TM_F_LINEAR) { |
1106 |
if (scale) |
1107 |
shiftcolrs(scn, len, scale); |
1108 |
colrs_gambs(scn, len); |
1109 |
return; |
1110 |
} |
1111 |
if (len > xmax) |
1112 |
quiterr("code error 1 in tmap_colrs"); |
1113 |
if (tmCvColrs(tmCurrent, lscan, cscan, scn, len)) |
1114 |
goto tmerr; |
1115 |
if (tmMapPixels(tmCurrent, pscan, lscan, cscan, len)) |
1116 |
goto tmerr; |
1117 |
ps = pscan; |
1118 |
if (greyscale) |
1119 |
while (len--) { |
1120 |
scn[0][RED] = scn[0][GRN] = scn[0][BLU] = *ps++; |
1121 |
scn[0][EXP] = COLXS; |
1122 |
scn++; |
1123 |
} |
1124 |
else |
1125 |
while (len--) { |
1126 |
scn[0][RED] = *ps++; |
1127 |
scn[0][GRN] = *ps++; |
1128 |
scn[0][BLU] = *ps++; |
1129 |
scn[0][EXP] = COLXS; |
1130 |
scn++; |
1131 |
} |
1132 |
return; |
1133 |
tmerr: |
1134 |
quiterr("tone mapping error"); |
1135 |
} |
1136 |
|
1137 |
|
1138 |
static void |
1139 |
getmono(void) /* get monochrome data */ |
1140 |
{ |
1141 |
register unsigned char *dp; |
1142 |
register int x, err; |
1143 |
int y, errp; |
1144 |
short *cerr; |
1145 |
|
1146 |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
1147 |
quiterr("out of memory in getmono"); |
1148 |
dp = ourdata - 1; |
1149 |
for (y = 0; y < ymax; y++) { |
1150 |
getscan(y); |
1151 |
add2icon(y, scanline); |
1152 |
normcolrs(scanline, xmax, scale); |
1153 |
err = 0; |
1154 |
for (x = 0; x < xmax; x++) { |
1155 |
if (!(x&7)) |
1156 |
*++dp = 0; |
1157 |
errp = err; |
1158 |
err += normbright(scanline[x]) + cerr[x]; |
1159 |
if (err > 127) |
1160 |
err -= 255; |
1161 |
else |
1162 |
*dp |= 1<<(7-(x&07)); |
1163 |
err /= 3; |
1164 |
cerr[x] = err + errp; |
1165 |
} |
1166 |
} |
1167 |
free((void *)cerr); |
1168 |
} |
1169 |
|
1170 |
|
1171 |
static void |
1172 |
add2icon( /* add a scanline to our icon data */ |
1173 |
int y, |
1174 |
COLR *scan |
1175 |
) |
1176 |
{ |
1177 |
static short cerr[ICONSIZ]; |
1178 |
static int ynext; |
1179 |
static char *dp; |
1180 |
COLR clr; |
1181 |
register int err; |
1182 |
register int x, ti; |
1183 |
int errp; |
1184 |
|
1185 |
if (iconheight == 0) { /* initialize */ |
1186 |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
1187 |
iconwidth = xmax; |
1188 |
iconheight = ymax; |
1189 |
} else if (xmax > ymax) { |
1190 |
iconwidth = ICONSIZ; |
1191 |
iconheight = ICONSIZ*ymax/xmax; |
1192 |
if (iconheight < 1) |
1193 |
iconheight = 1; |
1194 |
} else { |
1195 |
iconwidth = ICONSIZ*xmax/ymax; |
1196 |
if (iconwidth < 1) |
1197 |
iconwidth = 1; |
1198 |
iconheight = ICONSIZ; |
1199 |
} |
1200 |
ynext = 0; |
1201 |
dp = icondata - 1; |
1202 |
} |
1203 |
if (y < ynext*ymax/iconheight) /* skip this one */ |
1204 |
return; |
1205 |
err = 0; |
1206 |
for (x = 0; x < iconwidth; x++) { |
1207 |
if (!(x&7)) |
1208 |
*++dp = 0; |
1209 |
errp = err; |
1210 |
ti = x*xmax/iconwidth; |
1211 |
copycolr(clr, scan[ti]); |
1212 |
normcolrs(&clr, 1, scale); |
1213 |
err += normbright(clr) + cerr[x]; |
1214 |
if (err > 127) |
1215 |
err -= 255; |
1216 |
else |
1217 |
*dp |= 1<<(x&07); |
1218 |
err /= 3; |
1219 |
cerr[x] = err + errp; |
1220 |
} |
1221 |
ynext++; |
1222 |
} |
1223 |
|
1224 |
|
1225 |
static void |
1226 |
getfull(void) /* get full (24-bit) data */ |
1227 |
{ |
1228 |
int y; |
1229 |
register uint32 *dp; |
1230 |
register uint16 *dph; |
1231 |
register int x; |
1232 |
/* initialize tone mapping */ |
1233 |
make_tonemap(); |
1234 |
/* read and convert file */ |
1235 |
dp = (uint32 *)ourdata; |
1236 |
dph = (uint16 *)ourdata; |
1237 |
for (y = 0; y < ymax; y++) { |
1238 |
getscan(y); |
1239 |
add2icon(y, scanline); |
1240 |
tmap_colrs(scanline, xmax); |
1241 |
switch (ourras->image->blue_mask) { |
1242 |
case 0xff: /* 24-bit RGB */ |
1243 |
for (x = 0; x < xmax; x++) |
1244 |
*dp++ = (uint32)scanline[x][RED] << 16 | |
1245 |
(uint32)scanline[x][GRN] << 8 | |
1246 |
(uint32)scanline[x][BLU] ; |
1247 |
break; |
1248 |
case 0xff0000: /* 24-bit BGR */ |
1249 |
for (x = 0; x < xmax; x++) |
1250 |
*dp++ = (uint32)scanline[x][RED] | |
1251 |
(uint32)scanline[x][GRN] << 8 | |
1252 |
(uint32)scanline[x][BLU] << 16 ; |
1253 |
break; |
1254 |
#if 0 |
1255 |
case 0x1f: /* 15-bit RGB */ |
1256 |
for (x = 0; x < xmax; x++) |
1257 |
*dph++ = (scanline[x][RED] << 7 & 0x7c00) | |
1258 |
(scanline[x][GRN] << 2 & 0x3e0) | |
1259 |
(unsigned)scanline[x][BLU] >> 3 ; |
1260 |
break; |
1261 |
case 0x7c00: /* 15-bit BGR */ |
1262 |
for (x = 0; x < xmax; x++) |
1263 |
*dph++ = (unsigned)scanline[x][RED] >> 3 | |
1264 |
(scanline[x][GRN] << 2 & 0x3e0) | |
1265 |
(scanline[x][BLU] << 7 & 0x7c00) ; |
1266 |
break; |
1267 |
#endif |
1268 |
default: /* unknown */ |
1269 |
if (ourvis.depth > 16) |
1270 |
for (x = 0; x < xmax; x++) { |
1271 |
*dp = ourras->image->red_mask & |
1272 |
ourras->image->red_mask*scanline[x][RED]/255; |
1273 |
*dp |= ourras->image->green_mask & |
1274 |
ourras->image->green_mask*scanline[x][GRN]/255; |
1275 |
*dp++ |= ourras->image->blue_mask & |
1276 |
ourras->image->blue_mask*scanline[x][BLU]/255; |
1277 |
} |
1278 |
else |
1279 |
for (x = 0; x < xmax; x++) { |
1280 |
*dph = ourras->image->red_mask & |
1281 |
ourras->image->red_mask*scanline[x][RED]/255; |
1282 |
*dph |= ourras->image->green_mask & |
1283 |
ourras->image->green_mask*scanline[x][GRN]/255; |
1284 |
*dph++ |= ourras->image->blue_mask & |
1285 |
ourras->image->blue_mask*scanline[x][BLU]/255; |
1286 |
} |
1287 |
break; |
1288 |
} |
1289 |
} |
1290 |
} |
1291 |
|
1292 |
|
1293 |
static void |
1294 |
getgrey(void) /* get greyscale data */ |
1295 |
{ |
1296 |
int y; |
1297 |
register unsigned char *dp; |
1298 |
register int x; |
1299 |
/* initialize tone mapping */ |
1300 |
make_tonemap(); |
1301 |
/* read and convert file */ |
1302 |
dp = ourdata; |
1303 |
for (y = 0; y < ymax; y++) { |
1304 |
getscan(y); |
1305 |
add2icon(y, scanline); |
1306 |
tmap_colrs(scanline, xmax); |
1307 |
if (maxcolors < 256) |
1308 |
for (x = 0; x < xmax; x++) |
1309 |
*dp++ = ((int32)scanline[x][GRN] * |
1310 |
maxcolors + maxcolors/2) >> 8; |
1311 |
else |
1312 |
for (x = 0; x < xmax; x++) |
1313 |
*dp++ = scanline[x][GRN]; |
1314 |
} |
1315 |
for (x = 0; x < maxcolors; x++) |
1316 |
clrtab[x][RED] = clrtab[x][GRN] = |
1317 |
clrtab[x][BLU] = ((int32)x*256 + 128)/maxcolors; |
1318 |
} |
1319 |
|
1320 |
|
1321 |
static void |
1322 |
getmapped(void) /* get color-mapped data */ |
1323 |
{ |
1324 |
int y; |
1325 |
/* make sure we can do it first */ |
1326 |
if (fname == NULL) |
1327 |
quiterr("cannot map colors from standard input"); |
1328 |
/* initialize tone mapping */ |
1329 |
make_tonemap(); |
1330 |
/* make histogram */ |
1331 |
if (new_histo((int32)xmax*ymax) == -1) |
1332 |
quiterr("cannot initialize histogram"); |
1333 |
for (y = 0; y < ymax; y++) { |
1334 |
if (getscan(y) < 0) |
1335 |
break; |
1336 |
add2icon(y, scanline); |
1337 |
tmap_colrs(scanline, xmax); |
1338 |
cnt_colrs(scanline, xmax); |
1339 |
} |
1340 |
/* map pixels */ |
1341 |
if (!new_clrtab(maxcolors)) |
1342 |
quiterr("cannot create color map"); |
1343 |
for (y = 0; y < ymax; y++) { |
1344 |
getscan(y); |
1345 |
tmap_colrs(scanline, xmax); |
1346 |
if (dither) |
1347 |
dith_colrs(ourdata+y*xmax, scanline, xmax); |
1348 |
else |
1349 |
map_colrs(ourdata+y*xmax, scanline, xmax); |
1350 |
} |
1351 |
} |
1352 |
|
1353 |
|
1354 |
static void |
1355 |
scale_rcolors( /* scale color map */ |
1356 |
register XRASTER *xr, |
1357 |
double sf |
1358 |
) |
1359 |
{ |
1360 |
register int i; |
1361 |
long maxv; |
1362 |
|
1363 |
if (xr->pixels == NULL) |
1364 |
return; |
1365 |
|
1366 |
sf = pow(sf, 1.0/gamcor); |
1367 |
maxv = 65535/sf; |
1368 |
|
1369 |
for (i = xr->ncolors; i--; ) { |
1370 |
xr->cdefs[i].red = xr->cdefs[i].red > maxv ? |
1371 |
65535 : |
1372 |
xr->cdefs[i].red * sf; |
1373 |
xr->cdefs[i].green = xr->cdefs[i].green > maxv ? |
1374 |
65535 : |
1375 |
xr->cdefs[i].green * sf; |
1376 |
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ? |
1377 |
65535 : |
1378 |
xr->cdefs[i].blue * sf; |
1379 |
} |
1380 |
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors); |
1381 |
} |
1382 |
|
1383 |
|
1384 |
static int |
1385 |
getscan( |
1386 |
int y |
1387 |
) |
1388 |
{ |
1389 |
static int trunced = -1; /* truncated file? */ |
1390 |
skipit: |
1391 |
if (trunced >= 0 && y >= trunced) { |
1392 |
memset(scanline, '\0', xmax*sizeof(COLR)); |
1393 |
return(-1); |
1394 |
} |
1395 |
if (y != cury) { |
1396 |
if (scanpos == NULL || scanpos[y] == -1) |
1397 |
return(-1); |
1398 |
if (fseek(fin, scanpos[y], 0) == -1) |
1399 |
quiterr("fseek error"); |
1400 |
cury = y; |
1401 |
} else if (scanpos != NULL && scanpos[y] == -1) |
1402 |
scanpos[y] = ftell(fin); |
1403 |
|
1404 |
if (freadcolrs(scanline, xmax, fin) < 0) { |
1405 |
fprintf(stderr, "%s: %s: unfinished picture\n", |
1406 |
progname, fname==NULL?"<stdin>":fname); |
1407 |
trunced = y; |
1408 |
goto skipit; |
1409 |
} |
1410 |
cury++; |
1411 |
return(0); |
1412 |
} |