+ void set_fader_volume(unsigned card_index, float level_db) { cards[card_index].fader_volume_db = level_db; }
+ std::vector<std::string> get_names() const;
+ void set_name(unsigned card_index, const std::string &name);
+
+ void set_input_mapping(const InputMapping &input_mapping);
+ InputMapping get_input_mapping() const;
+