Function subblock_filter_vertical

pub(crate) fn subblock_filter_vertical(
    hev_threshold: u8,
    interior_limit: u8,
    edge_limit: u8,
    pixels: &mut [u8],
    point: usize,
    stride: usize,
)

Part of the normal filter described in 15.3 in the specification

Filters on the 8 pixels on the edges between subblocks inside a macroblock