函数 av_lfg_init_from_data 

pub unsafe extern "C" fn av_lfg_init_from_data(
    c: *mut AVLFG,
    data: *const u8,
    length: c_uint,
) -> c_int

Seed the state of the ALFG using binary data.

@return 0 on success, negative value (AVERROR) on failure.