pub unsafe extern "C" fn cuvidGetSourceAudioFormat(
obj: CUvideosource,
paudfmt: *mut CUAUDIOFORMAT,
flags: c_uint,
) -> CUresult
pub unsafe extern "C" fn cuvidGetSourceAudioFormat(
obj: CUvideosource,
paudfmt: *mut CUAUDIOFORMAT,
flags: c_uint,
) -> CUresult