let width = if planeno == 0 { self.width } else { self.width >> 2 };
let height = if planeno == 0 { self.height } else { self.height >> 2 };
let src = if self.fbuf { &self.buf1[0..] } else { &self.buf2[0..] };
- let mut dst = fbuf.get_data_mut();
+ let dst = fbuf.get_data_mut().unwrap();
for _ in 0..height {
for x in 0..width {
dst[doff + x] = src[soff + x] * 2;