pub unsafe extern "C" fn gst_rtsp_stream_recv_rtcp(
stream: *mut GstRTSPStream,
buffer: *mut GstBuffer,
) -> GstFlowReturn
pub unsafe extern "C" fn gst_rtsp_stream_recv_rtcp(
stream: *mut GstRTSPStream,
buffer: *mut GstBuffer,
) -> GstFlowReturn