Here are the data structures with brief descriptions:

C_locale_t
C_lscp_buffer_fill_t
C_lscp_channel_info_t
C_lscp_device_info_t
C_lscp_device_port_info_t
C_lscp_driver_info_t
C_lscp_engine_info_t
C_lscp_fxsend_info_t
C_lscp_midi_instrument_info_t
C_lscp_midi_instrument_t
C_lscp_param_info_t
C_lscp_param_t
C_lscp_server_info_t
C_lscp_socket_agent_t
C_lscp_thread_t