Initial import.
diff --git a/src/libdraw/cloadimage.c b/src/libdraw/cloadimage.c
new file mode 100644
index 0000000..eb30466
--- /dev/null
+++ b/src/libdraw/cloadimage.c
@@ -0,0 +1,49 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+int
+cloadimage(Image *i, Rectangle r, uchar *data, int ndata)
+{
+ int m, nb, miny, maxy, ncblock;
+ uchar *a;
+
+ if(!rectinrect(r, i->r)){
+ werrstr("cloadimage: bad rectangle");
+ return -1;
+ }
+
+ miny = r.min.y;
+ m = 0;
+ ncblock = _compblocksize(r, i->depth);
+ while(miny != r.max.y){
+ maxy = atoi((char*)data+0*12);
+ nb = atoi((char*)data+1*12);
+ if(maxy<=miny || r.max.y<maxy){
+ werrstr("creadimage: bad maxy %d", maxy);
+ return -1;
+ }
+ data += 2*12;
+ ndata -= 2*12;
+ m += 2*12;
+ if(nb<=0 || ncblock<nb || nb>ndata){
+ werrstr("creadimage: bad count %d", nb);
+ return -1;
+ }
+ a = bufimage(i->display, 21+nb);
+ if(a == nil)
+ return -1;
+ a[0] = 'Y';
+ BPLONG(a+1, i->id);
+ BPLONG(a+5, r.min.x);
+ BPLONG(a+9, miny);
+ BPLONG(a+13, r.max.x);
+ BPLONG(a+17, maxy);
+ memmove(a+21, data, nb);
+ miny = maxy;
+ data += nb;
+ ndata += nb;
+ m += nb;
+ }
+ return m;
+}
