pub unsafe extern "C" fn gst_discoverer_discover_uri(
discoverer: *mut GstDiscoverer,
uri: *const c_char,
error: *mut *mut GError,
) -> *mut GstDiscovererInfo
pub unsafe extern "C" fn gst_discoverer_discover_uri(
discoverer: *mut GstDiscoverer,
uri: *const c_char,
error: *mut *mut GError,
) -> *mut GstDiscovererInfo