Function gst::ffi::gst_buffer_add_video_region_of_interest_meta

pub unsafe extern "C" fn gst_buffer_add_video_region_of_interest_meta(
    buffer: *mut GstBuffer, 
    roi_type: *const gchar, 
    x: guint, 
    y: guint, 
    w: guint, 
    h: guint
) -> *mut GstVideoRegionOfInterestMeta