GstRTSPServer *gst_rtsp_onvif_server_new (void);
#define GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT "www.onvif.org/ver20/backchannel"
GstRTSPServer *gst_rtsp_onvif_server_new (void);
#define GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT "www.onvif.org/ver20/backchannel"