Function gstreamer_rtp_sys::gst_rtcp_packet_xr_get_voip_delay_metrics

pub unsafe extern "C" fn gst_rtcp_packet_xr_get_voip_delay_metrics(
    packet: *mut GstRTCPPacket, 
    roundtrip_delay: *mut u16, 
    end_system_delay: *mut u16
) -> gboolean

This is supported on crate feature v1_16 only.