Function gstreamer_sys::gst_clock_get_calibration

pub unsafe extern "C" fn gst_clock_get_calibration(
    clock: *mut GstClock, 
    internal: *mut GstClockTime, 
    external: *mut GstClockTime, 
    rate_num: *mut GstClockTime, 
    rate_denom: *mut GstClockTime
)