fn get_qidx<T: Pixel>(
fi: &FrameInvariants<T>,
ts: &TileStateMut<'_, T>,
cw: &ContextWriter<'_>,
tile_bo: TileBlockOffset,
) -> u8
fn get_qidx<T: Pixel>(
fi: &FrameInvariants<T>,
ts: &TileStateMut<'_, T>,
cw: &ContextWriter<'_>,
tile_bo: TileBlockOffset,
) -> u8