• ack : ack.h
• audio_output_command : output_internal.h
• client_subscribe_result : client_subscribe.h
• command_return : command.h
• db_error : db_error.h
• decoder_command : decoder_command.h
• decoder_state : decoder_control.h
• mixer_type : mixer_type.h
• pipe_event : event_pipe.h
• player_command : player_control.h
• player_error : player_control.h
• player_state : player_control.h
• playlist_result : playlist_error.h
• replay_gain_mode : replay_gain_info.h
• sample_format : audio_format.h
• tag_type : tag.h