Function gstreamer_rtsp_server_sys::gst_rtsp_media_seek_trickmode

pub unsafe extern "C" fn gst_rtsp_media_seek_trickmode(
    media: *mut GstRTSPMedia, 
    range: *mut GstRTSPTimeRange, 
    flags: GstSeekFlags, 
    rate: c_double, 
    trickmode_interval: GstClockTime
) -> gboolean

This is supported on crate feature v1_18 only.