PUType::Full => (mv_size, mv_size),
PUType::N2Hor => (mv_size, mv_size >> 1),
PUType::N2Ver => (mv_size >> 1, mv_size),
PUType::Quarters => (mv_size >> 1, mv_size >> 1),
PUType::N4Hor => {
if part_no == 0 {
PUType::Full => (mv_size, mv_size),
PUType::N2Hor => (mv_size, mv_size >> 1),
PUType::N2Ver => (mv_size >> 1, mv_size),
PUType::Quarters => (mv_size >> 1, mv_size >> 1),
PUType::N4Hor => {
if part_no == 0 {