fn get_subset_predictors(
tile_bo: TileBlockOffset,
tile_me_stats: &TileMEStats<'_>,
frame_ref_opt: Option<RwLockReadGuard<'_, [FrameMEStats; 8]>>,
ref_frame_id: usize,
pix_w: usize,
pix_h: usize,
mvx_min: isize,
mvx_max: isize,
mvy_min: isize,
mvy_max: isize,
corner: MVSamplingMode,
ssdec: u8,
) -> MotionEstimationSubsets