fn vp40_unpack_coeffs(&mut self, br: &mut BitReader, dc_table_y: usize, dc_table_c: usize, ac_table_y: usize, ac_table_c: usize) -> DecoderResult<()> {
const VP40_PRED_MASKS: [usize; 16] = [ // top, bottom, left, right
0b1010, 0b1010, 0b1000, 0b1011,
fn vp40_unpack_coeffs(&mut self, br: &mut BitReader, dc_table_y: usize, dc_table_c: usize, ac_table_y: usize, ac_table_c: usize) -> DecoderResult<()> {
const VP40_PRED_MASKS: [usize; 16] = [ // top, bottom, left, right
0b1010, 0b1010, 0b1000, 0b1011,