Function gst::ffi::gst_meta_register

pub unsafe extern "C" fn gst_meta_register(
    api: GType, 
    _impl: *const gchar, 
    size: gsize, 
    init_func: GstMetaInitFunction, 
    free_func: GstMetaFreeFunction, 
    transform_func: GstMetaTransformFunction
) -> *const GstMetaInfo