Function pred_cfl_128

pub(crate) fn pred_cfl_128<T: Pixel>(
    output: &mut PlaneRegionMut<'_, T>,
    ac: &[i16],
    alpha: i16,
    above: &[T],
    left: &[T],
    width: usize,
    height: usize,
    bit_depth: usize,
)