Function ff_vlc_init_sparse 

pub fn ff_vlc_init_sparse(
    vlc: &mut Vlc,
    nb_bits: i32,
    nb_codes: usize,
    bits: &[u8],
    bits_wrap: i32,
    bits_size: i32,
    codes: &[u8],
    codes_wrap: i32,
    codes_size: i32,
    symbols: Option<&[u8]>,
    symbols_wrap: i32,
    symbols_size: i32,
    flags: i32,
) -> Result<()>

Equivalent to upstream ff_vlc_init_sparse().