fn decode_frame(&mut self, br: &mut ByteReader, buf: &mut NAVideoBuffer<u8>) -> DecoderResult<bool> {
let paloff = buf.get_offset(1);
let stride = buf.get_stride(0);
fn decode_frame(&mut self, br: &mut ByteReader, buf: &mut NAVideoBuffer<u8>) -> DecoderResult<bool> {
let paloff = buf.get_offset(1);
let stride = buf.get_stride(0);