- enum bt_notification_iterator_status ret_iterator;
- enum bt_component_class_type upstream_comp_class_type;
- struct bt_notification_iterator *iterator = NULL;
- struct bt_port *upstream_port = NULL;
- struct bt_component *upstream_component = NULL;
- struct bt_component_class *upstream_comp_class = NULL;
- struct bt_connection *connection = NULL;
- bt_component_class_notification_iterator_init_method init_method = NULL;
- static const enum bt_notification_type all_notif_types[] = {
- BT_NOTIFICATION_TYPE_ALL,
- BT_NOTIFICATION_TYPE_SENTINEL,
- };
-
- if (!private_connection) {
- goto error;
- }
-
- if (!notification_types) {
- notification_types = all_notif_types;
- }
-
- connection = bt_connection_from_private(private_connection);
- if (!connection->upstream_port || !connection->downstream_port) {
- goto error;
- }
-
- upstream_port = connection->upstream_port;
- assert(upstream_port);
- upstream_component = bt_port_get_component(upstream_port);
- assert(upstream_component);
- upstream_comp_class = upstream_component->class;
-
- if (!upstream_component) {
- goto error;
- }
-
- upstream_comp_class_type =
- bt_component_get_class_type(upstream_component);
- if (upstream_comp_class_type != BT_COMPONENT_CLASS_TYPE_SOURCE &&
- upstream_comp_class_type != BT_COMPONENT_CLASS_TYPE_FILTER) {
- /* Unsupported operation. */
- goto error;
- }
-
- iterator = bt_notification_iterator_create(upstream_component,
- upstream_port, notification_types, connection);
- if (!iterator) {
- goto error;
- }
-
- switch (upstream_comp_class_type) {
- case BT_COMPONENT_CLASS_TYPE_SOURCE:
- {
- struct bt_component_class_source *source_class =
- container_of(upstream_comp_class,
- struct bt_component_class_source, parent);
- init_method = source_class->methods.iterator.init;
- break;
- }
- case BT_COMPONENT_CLASS_TYPE_FILTER:
- {
- struct bt_component_class_filter *filter_class =
- container_of(upstream_comp_class,
- struct bt_component_class_filter, parent);
- init_method = filter_class->methods.iterator.init;
- break;
- }
- default:
- /* Unreachable. */
- assert(0);
- }
-
- if (init_method) {
- enum bt_notification_iterator_status status = init_method(
- bt_private_notification_iterator_from_notification_iterator(iterator),
- bt_private_port_from_port(upstream_port));
- if (status < 0) {
- goto error;
- }
- }
-
- ret_iterator = bt_notification_iterator_validate(iterator);
- if (ret_iterator != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
- goto error;
- }
-
- g_ptr_array_add(connection->iterators, iterator);
- goto end;
-
-error:
- BT_PUT(iterator);
-
-end:
- bt_put(upstream_component);
- return iterator;