Function hip_decode1_headers 

pub unsafe extern "C" fn hip_decode1_headers(
    gfp: hip_t,
    mp3buf: *mut c_uchar,
    len: usize,
    pcm_l: *mut c_short,
    pcm_r: *mut c_short,
    mp3data: *mut mp3data_struct,
) -> c_int