1 |
– |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* vgaimage.c - driver for VGA board under DOS |
6 |
|
*/ |
13 |
|
#include <dos.h> |
14 |
|
#include <i86.h> |
15 |
|
|
16 |
< |
#define M_RDOWN 0x8 |
17 |
< |
#define M_RUP 0x10 |
18 |
< |
#define M_LDOWN 0x2 |
19 |
< |
#define M_LUP 0x4 |
20 |
< |
#define M_MOTION 0x1 |
16 |
> |
#define M_RDOWN 0x8 |
17 |
> |
#define M_RUP 0x10 |
18 |
> |
#define M_LDOWN 0x2 |
19 |
> |
#define M_LUP 0x4 |
20 |
> |
#define M_MOTION 0x1 |
21 |
|
|
22 |
|
int crad; |
26 |
– |
#define right_button (mouse_event & M_RIGHTBUTT) |
27 |
– |
#define left_button (mouse_event & M_LEFTBUTT) |
23 |
|
int mouse_event = 0; |
24 |
|
int mouse_xpos = -1; |
25 |
|
int mouse_ypos = -1; |
26 |
|
|
27 |
+ |
#define hide_cursor() move_cursor(-1,-1) |
28 |
+ |
#define show_cursor() move_cursor(mouse_xpos,mouse_ypos) |
29 |
|
|
30 |
< |
#define CTRL(c) ((c)-'@') |
30 |
> |
#define CTRL(c) ((c)-'@') |
31 |
|
|
32 |
< |
#define MAXWIDTH 1024 |
33 |
< |
#define MAXHEIGHT 768 |
32 |
> |
#define MAXWIDTH 1024 |
33 |
> |
#define MAXHEIGHT 768 |
34 |
|
|
35 |
|
short ourblack = 0; ourwhite = 1; |
36 |
|
|
37 |
< |
double gamcor = 2.2; /* gamma correction */ |
37 |
> |
double gamcor = 2.2; /* gamma correction */ |
38 |
|
|
39 |
< |
int dither = 1; /* dither colors? */ |
39 |
> |
int dither = 1; /* dither colors? */ |
40 |
|
|
41 |
< |
int maxcolors = 0; /* maximum colors */ |
42 |
< |
int minpix = 0; /* minimum pixel value */ |
43 |
< |
int greyscale = 0; /* in grey */ |
41 |
> |
int maxcolors = 0; /* maximum colors */ |
42 |
> |
int minpix = 0; /* minimum pixel value */ |
43 |
> |
int greyscale = 0; /* in grey */ |
44 |
|
|
45 |
< |
int scale = 0; /* scalefactor; power of two */ |
45 |
> |
int scale = 0; /* scalefactor; power of two */ |
46 |
|
|
47 |
< |
COLR scanline[MAXWIDTH]; /* scan line buffer */ |
47 |
> |
COLR scanline[MAXWIDTH]; /* scan line buffer */ |
48 |
|
|
49 |
< |
int xmax, ymax; /* picture dimensions */ |
50 |
< |
FILE *fin = stdin; /* input file */ |
51 |
< |
long scanpos[MAXHEIGHT]; /* scan line positions in file */ |
52 |
< |
int cury = 0; /* current scan location */ |
49 |
> |
int xmax, ymax; /* picture dimensions */ |
50 |
> |
FILE *fin = stdin; /* input file */ |
51 |
> |
long scanpos[MAXHEIGHT]; /* scan line positions in file */ |
52 |
> |
int cury = 0; /* current scan location */ |
53 |
|
|
54 |
< |
double exposure = 1.0; /* exposure compensation used */ |
54 |
> |
double exposure = 1.0; /* exposure compensation used */ |
55 |
|
|
56 |
< |
int wrongformat = 0; /* input in another format? */ |
56 |
> |
int wrongformat = 0; /* input in another format? */ |
57 |
|
|
58 |
|
struct { |
59 |
|
int xmin, ymin, xsiz, ysiz; |
60 |
< |
} box = {0, 0, 0, 0}; /* current box */ |
60 |
> |
} box = {0, 0, 0, 0}; /* current box */ |
61 |
|
|
62 |
|
int initialized = 0; |
63 |
|
int cheight, cwidth; |
64 |
|
|
65 |
< |
#define postext(x,y) _settextposition(1+(y)/cheight,1+(x)/cwidth) |
65 |
> |
#define postext(x,y) _settextposition(1+(y)/cheight,1+(x)/cwidth) |
66 |
|
|
67 |
|
char *progname; |
68 |
|
|
69 |
|
char errmsg[128]; |
70 |
|
|
71 |
< |
extern BYTE clrtab[256][3]; /* global color map */ |
71 |
> |
extern BYTE clrtab[256][3]; /* global color map */ |
72 |
|
|
73 |
|
extern long ftell(); |
74 |
|
|
81 |
|
char *gv; |
82 |
|
int headline(); |
83 |
|
int i; |
84 |
< |
|
84 |
> |
|
85 |
|
progname = argv[0] = fixargv0(argv[0]); |
86 |
< |
if ((gv = getenv("GAMMA")) != NULL) |
86 |
> |
if ((gv = getenv("DISPLAY_GAMMA")) != NULL) |
87 |
|
gamcor = atof(gv); |
88 |
|
|
89 |
|
for (i = 1; i < argc; i++) |
115 |
|
else |
116 |
|
break; |
117 |
|
|
118 |
< |
if (i == argc-1) { /* open picture */ |
118 |
> |
if (i == argc-1) { /* open picture */ |
119 |
|
fin = fopen(argv[i], "r"); |
120 |
|
if (fin == NULL) { |
121 |
|
sprintf(errmsg, "cannot open file \"%s\"", argv[i]); |
132 |
|
if (xmax > MAXWIDTH | ymax > MAXHEIGHT) |
133 |
|
quiterr("input picture too large for VGA"); |
134 |
|
|
135 |
< |
init(); /* initialize and display */ |
135 |
> |
init(); /* initialize and display */ |
136 |
|
|
137 |
< |
while (docommand()) /* loop on command */ |
137 |
> |
while (docommand()) /* loop on command */ |
138 |
|
; |
139 |
|
quiterr(NULL); |
140 |
|
userr: |
144 |
|
} |
145 |
|
|
146 |
|
|
147 |
< |
headline(s) /* get relevant info from header */ |
147 |
> |
int |
148 |
> |
headline(s) /* get relevant info from header */ |
149 |
|
char *s; |
150 |
|
{ |
151 |
|
char fmt[32]; |
156 |
|
formatval(fmt, s); |
157 |
|
wrongformat = strcmp(fmt, COLRFMT); |
158 |
|
} |
159 |
+ |
return(0); |
160 |
|
} |
161 |
|
|
162 |
|
|
163 |
< |
init() /* initialize and load display */ |
163 |
> |
init() /* initialize and load display */ |
164 |
|
{ |
165 |
|
static struct { |
166 |
< |
short mode; |
167 |
< |
short xsiz, ysiz; |
168 |
< |
} video[] = { |
166 |
> |
short mode; |
167 |
> |
short xsiz, ysiz; |
168 |
> |
} video[] = { |
169 |
|
{_MRES256COLOR, 320, 200}, |
170 |
< |
{_VRES256COLOR, 640, 400}, |
170 |
> |
{_VRES256COLOR, 640, 480}, |
171 |
|
{_SVRES256COLOR, 800, 600}, |
172 |
|
{_XRES256COLOR, 1024, 768}, |
173 |
< |
-1 |
173 |
> |
{-1, 0, 0} |
174 |
|
}; |
175 |
< |
struct videoconfig config; |
176 |
< |
register int i; |
175 |
> |
struct videoconfig config; |
176 |
> |
register int i; |
177 |
|
/* pick a card... */ |
178 |
|
for (i = 0; video[i].mode != -1; i++) |
179 |
|
if (video[i].xsiz >= xmax && video[i].ysiz >= ymax) |
182 |
|
quiterr("input picture too large"); |
183 |
|
if (_setvideomode(video[i].mode) == 0) |
184 |
|
quiterr("inadequate display card for picture"); |
185 |
+ |
ms_init(); |
186 |
|
initialized = 1; |
187 |
|
_getvideoconfig(&config); |
188 |
< |
if (maxcolors == 0) |
189 |
< |
maxcolors = config.numcolors; |
190 |
< |
if (maxcolors > 4) { |
191 |
< |
maxcolors -= minpix = 2; |
192 |
< |
_settextcolor(ourwhite); |
193 |
< |
} |
188 |
> |
if (maxcolors == 0 | maxcolors > config.numcolors) |
189 |
> |
maxcolors = config.numcolors-2; |
190 |
> |
if (maxcolors <= config.numcolors-2) |
191 |
> |
minpix = 2; |
192 |
> |
else |
193 |
> |
ourwhite = maxcolors-1; |
194 |
> |
_settextcolor(ourwhite); |
195 |
|
cheight = config.numypixels/config.numtextrows; |
196 |
|
cwidth = config.numxpixels/config.numtextcols; |
197 |
|
/* clear scan position array */ |
205 |
|
} |
206 |
|
|
207 |
|
|
208 |
< |
quiterr(err) /* print message and exit */ |
208 |
> |
quiterr(err) /* print message and exit */ |
209 |
|
char *err; |
210 |
|
{ |
211 |
< |
if (initialized) |
211 |
> |
if (initialized) { |
212 |
> |
ms_done(); |
213 |
|
_setvideomode(_DEFAULTMODE); |
214 |
+ |
} |
215 |
|
if (err != NULL) { |
216 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
217 |
|
exit(1); |
221 |
|
|
222 |
|
|
223 |
|
int |
224 |
< |
docommand() /* execute command */ |
224 |
> |
docommand() /* execute command */ |
225 |
|
{ |
226 |
|
char buf[64]; |
227 |
|
COLOR cval; |
228 |
|
int com; |
229 |
< |
double comp; |
229 |
> |
double comp; |
230 |
|
|
231 |
|
while (!kbhit()) |
232 |
|
watch_mouse(); |
233 |
|
com = getch(); |
234 |
< |
switch (com) { /* interpret command */ |
234 |
> |
switch (com) { /* interpret command */ |
235 |
|
case 'q': |
236 |
< |
case CTRL('Z'): /* quit */ |
236 |
> |
case CTRL('Z'): /* quit */ |
237 |
|
return(0); |
238 |
|
case '\n': |
239 |
|
case '\r': |
240 |
|
case 'l': |
241 |
< |
case 'c': /* value */ |
241 |
> |
case 'c': /* value */ |
242 |
|
if (avgbox(cval) == -1) |
243 |
|
return(-1); |
244 |
|
switch (com) { |
245 |
|
case '\n': |
246 |
< |
case '\r': /* radiance */ |
246 |
> |
case '\r': /* radiance */ |
247 |
|
sprintf(buf, "%.3f", intens(cval)/exposure); |
248 |
|
break; |
249 |
< |
case 'l': /* luminance */ |
249 |
> |
case 'l': /* luminance */ |
250 |
|
sprintf(buf, "%.0fL", luminance(cval)/exposure); |
251 |
|
break; |
252 |
< |
case 'c': /* color */ |
252 |
> |
case 'c': /* color */ |
253 |
|
comp = pow(2.0, (double)scale); |
254 |
|
sprintf(buf, "(%.2f,%.2f,%.2f)", |
255 |
|
colval(cval,RED)*comp, |
258 |
|
break; |
259 |
|
} |
260 |
|
postext(box.xmin+box.xsiz/2, box.ymin+box.ysiz/2); |
261 |
+ |
hide_cursor(); |
262 |
|
_outtext(buf); |
263 |
+ |
show_cursor(); |
264 |
|
return(1); |
265 |
|
default: |
266 |
|
return(-1); |
268 |
|
} |
269 |
|
|
270 |
|
|
271 |
< |
watch_mouse() /* look after mousie */ |
271 |
> |
watch_mouse() /* look after mousie */ |
272 |
|
{ |
273 |
< |
static int mouse_installed = 0; |
269 |
< |
int a_x, a_y, l_x, l_y; |
273 |
> |
int a_x, a_y, l_x, l_y; |
274 |
|
|
271 |
– |
if (!mouse_installed) { |
272 |
– |
ms_init(); |
273 |
– |
mouse_installed = 1; |
274 |
– |
} |
275 |
|
if (mouse_event & M_MOTION) |
276 |
|
move_cursor(mouse_xpos, mouse_ypos); |
277 |
|
if (!(mouse_event & M_LDOWN)) |
278 |
|
return; |
279 |
|
l_x = a_x = mouse_xpos; l_y = a_y = mouse_ypos; |
280 |
< |
move_cursor(-1, -1); /* hide cursor */ |
281 |
< |
revbox(a_x, a_y, l_x, l_y); /* show box */ |
280 |
> |
hide_cursor(); |
281 |
> |
revbox(a_x, a_y, l_x, l_y); /* show box */ |
282 |
|
do { |
283 |
|
mouse_event = 0; |
284 |
|
while (!mouse_event) |
288 |
|
revbox(a_x, a_y, l_x=mouse_xpos, l_y=mouse_ypos); |
289 |
|
} |
290 |
|
} while (!(mouse_event & M_LUP)); |
291 |
< |
revbox(a_x, a_y, l_x, l_y); /* hide box */ |
292 |
< |
move_cursor(mouse_xpos, mouse_ypos); /* show cursor */ |
291 |
> |
revbox(a_x, a_y, l_x, l_y); /* hide box */ |
292 |
> |
show_cursor(); |
293 |
|
box.xmin = mouse_xpos; |
294 |
|
box.ymin = mouse_ypos; |
295 |
|
if (box.xmin > a_x) { |
308 |
|
} |
309 |
|
|
310 |
|
|
311 |
< |
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
311 |
> |
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
312 |
|
int x0, y0, x1, y1; |
313 |
|
{ |
314 |
|
_setplotaction(_GXOR); |
322 |
|
|
323 |
|
|
324 |
|
int |
325 |
< |
avgbox(clr) /* average color over current box */ |
325 |
> |
avgbox(clr) /* average color over current box */ |
326 |
|
COLOR clr; |
327 |
|
{ |
328 |
|
static COLOR lc; |
329 |
|
static int ll, lr, lt, lb; |
330 |
|
int left, right, top, bottom; |
331 |
|
int y; |
332 |
< |
double d; |
332 |
> |
double d; |
333 |
|
COLOR ctmp; |
334 |
|
register int x; |
335 |
|
|
370 |
|
} |
371 |
|
|
372 |
|
|
373 |
< |
setpalette() /* set our palette using clrtab */ |
373 |
> |
setpalette() /* set our palette using clrtab */ |
374 |
|
{ |
375 |
< |
long cvals[256]; |
376 |
< |
register int i; |
375 |
> |
long cvals[256]; |
376 |
> |
register int i; |
377 |
|
|
378 |
< |
if (minpix >= 2) { |
379 |
< |
cvals[ourblack] = _BLACK; cvals[ourwhite] = _BRIGHTWHITE; |
380 |
< |
} |
378 |
> |
cvals[ourblack] = _BLACK; |
379 |
> |
cvals[ourwhite] = _BRIGHTWHITE; |
380 |
|
for (i = 0; i < maxcolors; i++) |
381 |
< |
cvals[i+minpix] = clrtab[i][BLU]<<14 & 0x3f0000L | |
381 |
> |
cvals[i+minpix] = (long)clrtab[i][BLU]<<14 & 0x3f0000L | |
382 |
|
clrtab[i][GRN]<<6 & 0x3f00 | |
383 |
|
clrtab[i][RED]>>2; |
384 |
|
_remapallpalette(cvals); |
385 |
|
} |
386 |
|
|
387 |
|
|
388 |
< |
greyimage() /* display greyscale image */ |
388 |
> |
greyimage() /* display greyscale image */ |
389 |
|
{ |
390 |
< |
short thiscolor, lastcolor = -1; |
391 |
< |
int y; |
392 |
< |
register int x; |
390 |
> |
short thiscolor, lastcolor = -1; |
391 |
> |
int y; |
392 |
> |
register int x; |
393 |
|
/* set gamma correction */ |
394 |
|
setcolrgam(gamcor); |
395 |
|
/* set up color map */ |
396 |
|
for (x = 0; x < maxcolors; x++) |
397 |
< |
clrtab[x][RED] = clrtab[x][GRN] = |
398 |
< |
clrtab[x][BLU] = ((long)x*256+maxcolors/2)/maxcolors; |
397 |
> |
clrtab[x][RED] = clrtab[x][GRN] = clrtab[x][BLU] = |
398 |
> |
((long)x*256 + 128)/maxcolors; |
399 |
|
setpalette(); |
400 |
|
_setplotaction(_GPSET); |
401 |
|
/* read and display file */ |
403 |
|
getscan(y); |
404 |
|
if (scale) |
405 |
|
shiftcolrs(scanline, xmax, scale); |
406 |
+ |
for (x = 0; x < xmax; x++) |
407 |
+ |
scanline[x][GRN] = normbright(scanline[x]); |
408 |
|
colrs_gambs(scanline, xmax); |
409 |
|
if (maxcolors < 256) |
410 |
< |
for (x = 0; x < xmax; x++) { |
411 |
< |
thiscolor = ((long)normbright(scanline[x]) * |
412 |
< |
maxcolors + 128) >> 8; |
410 |
> |
for (x = 0; x < xmax; x++) { |
411 |
> |
thiscolor = ((long)scanline[x][GRN] * |
412 |
> |
maxcolors + maxcolors/2) / 256; |
413 |
|
if (thiscolor != lastcolor) |
414 |
|
_setcolor((lastcolor=thiscolor)+minpix); |
415 |
|
_setpixel(x, y); |
416 |
|
} |
417 |
|
else |
418 |
|
for (x = 0; x < xmax; x++) { |
419 |
< |
thiscolor = normbright(scanline[x]); |
419 |
> |
thiscolor = scanline[x][GRN]; |
420 |
|
if (thiscolor != lastcolor) |
421 |
|
_setcolor((lastcolor=thiscolor)+minpix); |
422 |
|
_setpixel(x, y); |
425 |
|
} |
426 |
|
|
427 |
|
|
428 |
< |
mappedimage() /* display color-mapped image */ |
428 |
> |
mappedimage() /* display color-mapped image */ |
429 |
|
{ |
430 |
< |
BYTE bscan[MAXWIDTH]; |
431 |
< |
int y; |
432 |
< |
register int x; |
430 |
> |
BYTE bscan[MAXWIDTH]; |
431 |
> |
int y; |
432 |
> |
register int x; |
433 |
|
/* set gamma correction */ |
434 |
|
setcolrgam(gamcor); |
435 |
|
/* make histogram */ |
436 |
+ |
_outtext("Quantizing image -- Please wait..."); |
437 |
|
new_histo(); |
438 |
|
for (y = 0; y < ymax; y++) { |
439 |
|
if (getscan(y) < 0) |
477 |
|
if (fseek(fin, scanpos[y], 0) == -1) |
478 |
|
quiterr("fseek error"); |
479 |
|
cury = y; |
480 |
< |
} else if (scanpos != NULL && scanpos[y] == -1) |
480 |
> |
} else if (fin != stdin && scanpos[y] == -1) |
481 |
|
scanpos[y] = ftell(fin); |
482 |
|
|
483 |
|
if (freadcolrs(scanline, xmax, fin) < 0) |
499 |
|
#pragma aux mouse_handler parm [EAX] [ECX] [EDX] |
500 |
|
mouse_event = max; |
501 |
|
mouse_xpos = mcx; |
502 |
< |
mouse_ypos = mdx * (long)ymax / 200; /* kludge */ |
501 |
< |
if (mouse_xpos >= xmax) mouse_xpos = xmax-1; |
502 |
< |
if (mouse_ypos >= ymax) mouse_ypos = ymax-1; |
502 |
> |
mouse_ypos = mdx; |
503 |
|
} |
504 |
|
#pragma on (check_stack) |
505 |
|
|
506 |
|
|
507 |
|
void |
508 |
< |
move_cursor(newx, newy) /* move cursor to new position */ |
508 |
> |
move_cursor(newx, newy) /* move cursor to new position */ |
509 |
|
int newx, newy; |
510 |
|
{ |
511 |
|
static char *imp = NULL; |
512 |
|
static int curx = -1, cury = -1; |
513 |
< |
#define xcmin (curx-crad<0 ? 0 : curx-crad) |
514 |
< |
#define ycmin (cury-crad<0 ? 0 : cury-crad) |
515 |
< |
#define xcmax (curx+crad>=xmax ? xmax-1 : curx+crad) |
516 |
< |
#define ycmax (cury+crad>=ymax ? ymax-1 : cury+crad) |
513 |
> |
#define xcmin (curx-crad<0 ? 0 : curx-crad) |
514 |
> |
#define ycmin (cury-crad<0 ? 0 : cury-crad) |
515 |
> |
#define xcmax (curx+crad>=xmax ? xmax-1 : curx+crad) |
516 |
> |
#define ycmax (cury+crad>=ymax ? ymax-1 : cury+crad) |
517 |
|
|
518 |
|
if (newx == curx & newy == cury) |
519 |
|
return; |
520 |
< |
if (imp == NULL && |
520 |
> |
if (imp == NULL && |
521 |
|
(imp = bmalloc(_imagesize(0,0,2*crad+1,2*crad+1))) == NULL) { |
522 |
|
quiterr("out of memory in move_cursor"); |
523 |
|
} |
524 |
< |
if (curx >= 0 & cury >= 0) /* clear old cursor */ |
524 |
> |
if (curx >= 0 & cury >= 0) /* clear old cursor */ |
525 |
|
_putimage(xcmin, ycmin, imp, _GPSET); |
526 |
|
/* record new position */ |
527 |
|
curx = newx; cury = newy; |
528 |
|
if (curx < 0 | cury < 0) |
529 |
< |
return; /* no cursor */ |
529 |
> |
return; /* no cursor */ |
530 |
|
/* save under new cursor */ |
531 |
|
_getimage(xcmin, ycmin, xcmax, ycmax, imp); |
532 |
|
/* draw new cursor */ |
565 |
|
} |
566 |
|
|
567 |
|
crad = ymax/40; |
568 |
< |
|
568 |
> |
|
569 |
> |
/* set screen limits */ |
570 |
> |
|
571 |
> |
inregs.w.ax = 0x7; /* horizontal resolution */ |
572 |
> |
inregs.w.cx = 0; |
573 |
> |
inregs.w.dx = xmax-1; |
574 |
> |
int386x( 0x33, &inregs, &outregs, &sregs ); |
575 |
> |
inregs.w.ax = 0x8; /* vertical resolution */ |
576 |
> |
inregs.w.cx = 0; |
577 |
> |
inregs.w.dx = ymax-1; |
578 |
> |
int386x( 0x33, &inregs, &outregs, &sregs ); |
579 |
> |
|
580 |
|
/* install watcher */ |
581 |
|
|
582 |
|
inregs.w.ax = 0xC; |
583 |
|
inregs.w.cx = M_LDOWN | M_LUP | M_MOTION; |
584 |
|
function_ptr = mouse_handler; |
585 |
|
inregs.x.edx = FP_OFF( function_ptr ); |
586 |
< |
sregs.es = FP_SEG( function_ptr ); |
586 |
> |
sregs.es = FP_SEG( function_ptr ); |
587 |
|
int386x( 0x33, &inregs, &outregs, &sregs ); |
588 |
< |
|
588 |
> |
|
589 |
|
return(1); |
590 |
+ |
} |
591 |
+ |
|
592 |
+ |
ms_done() |
593 |
+ |
{ |
594 |
+ |
union REGS inregs, outregs; |
595 |
+ |
|
596 |
+ |
/* uninstall watcher */ |
597 |
+ |
|
598 |
+ |
inregs.w.ax = 0; |
599 |
+ |
int386 (0x33, &inregs, &outregs); |
600 |
|
} |