1 more

source/modules/lilv/lilv-0.21.3/src/ui.c

@@ -160,3 +160,54 @@ lilv_ui_get_extension_data(const LilvUI* ui)
        assert(ui->world);
        return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_extensionData);
 }
+
+static LilvNodes*
+lilv_ui_get_value_internal(const LilvUI* ui, const SordNode* predicate)
+{
+       assert(ui);
+       return lilv_world_find_nodes_internal(ui->world, ui->uri->node, predicate, NULL);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_supported_features(const LilvUI* ui)
+{
+       assert(ui);
+       LilvNodes* optional = lilv_ui_get_optional_features(ui);
+       LilvNodes* required = lilv_ui_get_required_features(ui);
+       LilvNodes* result   = lilv_nodes_new();
+
+       LILV_FOREACH(nodes, i, optional)
+               zix_tree_insert((ZixTree*)result, lilv_node_duplicate(lilv_nodes_get(optional, i)), NULL);
+
+       LILV_FOREACH(nodes, i, required)
+               zix_tree_insert((ZixTree*)result, lilv_node_duplicate(lilv_nodes_get(required, i)), NULL);
+
+       lilv_nodes_free(optional);
+       lilv_nodes_free(required);
+
+       return result;
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_required_features(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_requiredFeature);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_optional_features(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_optionalFeature);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_extension_data(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_extensionData);
+}