1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 
5 int
6 cloadimage(Image *i, Rectangle r, uchar *data, int ndata)
7 {
8 	int m, nb, miny, maxy, ncblock;
9 	uchar *a;
10 
11 	if(!rectinrect(r, i->r)){
12 		werrstr("cloadimage: bad rectangle");
13 		return -1;
14 	}
15 
16 	miny = r.min.y;
17 	m = 0;
18 	ncblock = _compblocksize(r, i->depth);
19 	while(miny != r.max.y){
20 		maxy = atoi((char*)data+0*12);
21 		nb = atoi((char*)data+1*12);
22 		if(maxy<=miny || r.max.y<maxy){
23 			werrstr("creadimage: bad maxy %d", maxy);
24 			return -1;
25 		}
26 		data += 2*12;
27 		ndata -= 2*12;
28 		m += 2*12;
29 		if(nb<=0 || ncblock<nb || nb>ndata){
30 			werrstr("creadimage: bad count %d", nb);
31 			return -1;
32 		}
33 		a = bufimage(i->display, 21+nb);
34 		if(a == nil)
35 			return -1;
36 		a[0] = 'Y';
37 		BPLONG(a+1, i->id);
38 		BPLONG(a+5, r.min.x);
39 		BPLONG(a+9, miny);
40 		BPLONG(a+13, r.max.x);
41 		BPLONG(a+17, maxy);
42 		memmove(a+21, data, nb);
43 		miny = maxy;
44 		data += nb;
45 		ndata += nb;
46 		m += nb;
47 	}
48 	return m;
49 }