16 typedef struct Control Control;
33 if(v == nil) sysfatal("malloc: %r");
35 setmalloctag(v, getcallerpc(&n));
42 bg = allocimage(display, Rect(0, 0, 1, 1), screen->chan, 1, 0xCCCCCCFF);
43 scr = allocscreen(screen, bg, 0);
44 disp = allocwindow(scr, screen->r, 0, 0xCCCCCCFF);
45 draw(screen, screen->r, bg, nil, ZP);
46 flushimage(display, 1);
52 fprint(2, "usage: %s cam-device\n", argv0);
53 threadexitsall("usage");
66 bp = Bfdopen(ctlfd, OREAD);
71 for(; s = Brdstr(bp, '\n', 1), s != nil; free(s)){
72 nf = tokenize(s, f, nelem(f));
74 fprint(2, "don't know how to interpret ctl line: %s\n", s);
77 c = emalloc(sizeof(Control));
78 c->unit = strdup(f[0]);
79 c->ctrl = strdup(f[1]);
80 c->value = strdup(f[2]);
81 if(nf >= 4) c->info = strdup(f[3]);
92 for(c = ctls; c != nil; c = d){
104 opencamera(char *dir)
108 s = smprint("%s/ctl", dir);
109 ctlfd = open(s, ORDWR);
110 if(ctlfd < 0) sysfatal("open: %r");
113 videoname = smprint("%s/video", dir);
121 while(recv(mc->resizec, &dummy) > 0){
122 lockdisplay(display);
123 if(getwindow(display, Refnone) < 0)
124 sysfatal("resize failed: %r");
126 unlockdisplay(display);
136 static char *items[] = {
140 static Menu menu = { .item = items };
141 switch(menuhit(3, mc, &menu, scr)){
151 static char buf[512];
153 for(c = ctls; n-- > 0 && c != nil; c = c->next)
157 snprint(buf, sizeof(buf), "%s(%s) = %s", c->ctrl, c->unit, c->value);
165 static char buf[512];
166 static char nval[512];
169 Menu menu = { .gen = ctlgen };
171 n = menuhit(2, mc, &menu, scr);
173 for(c = ctls; n-- > 0 && c != nil; c = c->next)
176 snprint(buf, sizeof(buf), "%s(%s) = %s%c(%s)", c->ctrl, c->unit, c->value, c->info != nil ? ' ' : 0, c->info);
178 if(enter(buf, nval, sizeof(nval), mc, kc, scr) <= 0) return;
179 if(fprint(ctlfd, "%q %q %q", c->unit, c->ctrl, nval) < 0){
180 fprint(2, "fprint: %r\n");
196 fd = open(videoname, OREAD);
197 if(fd < 0) sysfatal("open: %r");
199 i = readimage(display, fd, 1);
201 p = divpt(addpt(screen->r.min, screen->r.max), 2);
202 q = divpt(subpt(i->r.max, i->r.min), 2);
203 r = (Rectangle){subpt(p, q), addpt(p, q)};
204 lockdisplay(display);
205 draw(disp, r, i, nil, i->r.min);
207 flushimage(display, 1);
208 unlockdisplay(display);
210 fprint(2, "readimage: %r\n");
216 threadmain(int argc, char **argv)
223 if(argc != 1) usage();
226 if(initdraw(nil, nil, "camv") < 0)
227 sysfatal("initdraw: %r");
229 kc = initkeyboard(nil);
230 if(kc == nil) sysfatal("initkeyboard: %r");
231 mc = initmouse(nil, screen);
232 if(mc == nil) sysfatal("initmouse: %r");
233 threadcreate(resizethread, nil, mainstacksize);
234 proccreate(videoproc, nil, mainstacksize);
235 display->locking = 1;
236 flushimage(display, 1);
237 unlockdisplay(display);
238 while(recv(mc->c, &mc->Mouse) >= 0){
241 lockdisplay(display);
242 if((mc->buttons & 4) != 0)
244 else if((mc->buttons & 2) != 0)
246 flushimage(display, 1);
247 unlockdisplay(display);