1 324891a5 2006-06-25 devnull #include <u.h>
 2 324891a5 2006-06-25 devnull #include <libc.h>
 3 324891a5 2006-06-25 devnull #include <draw.h>
 4 324891a5 2006-06-25 devnull #include <memdraw.h>
 5 324891a5 2006-06-25 devnull 
 6 324891a5 2006-06-25 devnull int
 7 324891a5 2006-06-25 devnull _unloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
 8 324891a5 2006-06-25 devnull {
 9 324891a5 2006-06-25 devnull 	int y, l;
10 324891a5 2006-06-25 devnull 	uchar *q;
11 324891a5 2006-06-25 devnull 
12 324891a5 2006-06-25 devnull 	if(!rectinrect(r, i->r))
13 324891a5 2006-06-25 devnull 		return -1;
14 324891a5 2006-06-25 devnull 	l = bytesperline(r, i->depth);
15 324891a5 2006-06-25 devnull 	if(ndata < l*Dy(r))
16 324891a5 2006-06-25 devnull 		return -1;
17 324891a5 2006-06-25 devnull 	ndata = l*Dy(r);
18 324891a5 2006-06-25 devnull 	q = byteaddr(i, r.min);
19 324891a5 2006-06-25 devnull 	for(y=r.min.y; y<r.max.y; y++){
20 324891a5 2006-06-25 devnull 		memmove(data, q, l);
21 324891a5 2006-06-25 devnull 		q += i->width*sizeof(u32int);
22 324891a5 2006-06-25 devnull 		data += l;
23 324891a5 2006-06-25 devnull 	}
24 324891a5 2006-06-25 devnull 	return ndata;
25 324891a5 2006-06-25 devnull }