Function fdk_mps_encode_two_frames_test 

pub unsafe extern "C" fn fdk_mps_encode_two_frames_test(
    sampling_rate: UINT,
    frame_length: UINT,
    left: *const INT_PCM,
    right: *const INT_PCM,
    payload: *mut UCHAR,
    payload_stride: UINT,
    payload_bits: *mut UINT,
) -> INT