Function gstreamer_rtp_sys::gst_rtcp_packet_xr_get_dlrr_block

pub unsafe extern "C" fn gst_rtcp_packet_xr_get_dlrr_block(
    packet: *mut GstRTCPPacket, 
    nth: c_uint, 
    ssrc: *mut u32, 
    last_rr: *mut u32, 
    delay: *mut u32
) -> gboolean

This is supported on crate feature v1_16 only.