Function encode_block_pre_cdef

pub fn encode_block_pre_cdef<T: Pixel, W: Writer>(
    seq: &Sequence,
    ts: &TileStateMut<'_, T>,
    cw: &mut ContextWriter<'_>,
    w: &mut W,
    bsize: BlockSize,
    tile_bo: TileBlockOffset,
    skip: bool,
) -> bool