Function lame_encode_buffer_float 

pub unsafe extern "C" fn lame_encode_buffer_float(
    gfp: *mut lame_global_flags,
    pcm_l: *mut f32,
    pcm_r: *mut f32,
    nsamples: c_int,
    mp3buf: *mut c_uchar,
    mp3buf_size: c_int,
) -> c_int