1 #include "lib9.h"
2 #include "draw.h"
3 #include "kernel.h"
4
5 int
cloadimage(Image * i,Rectangle r,uchar * data,int ndata)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 }
50