fmt.get_chromaton(1).unwrap().get_offset() as usize,
fmt.get_chromaton(2).unwrap().get_offset() as usize];
let stride = buf.get_stride(0);
- let mut data = buf.get_data_mut();
+ let data = buf.get_data_mut().unwrap();
let dst = data.as_mut_slice();
let mut off = 0;