lib: Add functions to borrow specialized component classes from specialized components

[babeltrace.git] / lib / graph / component-filter.c

diff --git a/lib/graph/component-filter.c b/lib/graph/component-filter.c
index 32a12924737f7af43569dafecdaf0cc2c8dfa5e7..c1c730ca3bbb15f0a4335588fdc77348cb2d1e58 100644 (file)
--- a/lib/graph/component-filter.c
+++ b/lib/graph/component-filter.c
@@ -56,6 +56,22 @@ end:
        return (void *) filter;
 }
 
+const bt_component_class_filter *
+bt_component_filter_borrow_class_const(
+               const bt_component_filter *component)
+{
+       struct bt_component_class *cls;
+
+       BT_ASSERT_PRE_NON_NULL(component, "Component");
+
+       cls = component->parent.class;
+
+       BT_ASSERT(cls);
+       BT_ASSERT(cls->type == BT_COMPONENT_CLASS_TYPE_FILTER);
+
+       return (bt_component_class_filter *) cls;
+}
+
 uint64_t bt_component_filter_get_output_port_count(
                const struct bt_component_filter *comp)
 {