fn output_frame(&mut self, buf: &mut NAVideoBuffer<u8>) {
let mut offs = [ buf.get_offset(0), buf.get_offset(1), buf.get_offset(2) ];
let strides = [ buf.get_stride(0), buf.get_stride(1), buf.get_stride(2) ];
fn output_frame(&mut self, buf: &mut NAVideoBuffer<u8>) {
let mut offs = [ buf.get_offset(0), buf.get_offset(1), buf.get_offset(2) ];
let strides = [ buf.get_stride(0), buf.get_stride(1), buf.get_stride(2) ];