g_string_append_printf(port_name, "%u", muxer_comp->next_port_num);
priv_port = bt_private_component_filter_add_input_private_port(
g_string_append_printf(port_name, "%u", muxer_comp->next_port_num);
priv_port = bt_private_component_filter_add_input_private_port(