Here are the data structures with brief descriptions:

apt_content_part_t
apt_header_field_t
apt_header_section_t
apt_message_context_t
apt_message_generator_vtable_t
apt_message_parser_vtable_t
apt_pair_t
apt_str_t
apt_str_table_item_t
apt_task_msg_t
apt_task_vtable_t
apt_test_suite_t
apt_text_stream_t
demo_application_t
mpf_audio_file_descriptor_t
mpf_audio_stream_t
mpf_audio_stream_vtable_t
mpf_codec_attribs_t
mpf_codec_capabilities_t
mpf_codec_descriptor_t
mpf_codec_frame_t
mpf_codec_list_t
mpf_codec_t
mpf_codec_vtable_t
mpf_frame_t
mpf_jb_config_t
mpf_message_container_t
mpf_message_t
mpf_named_event_frame_t
mpf_object_t
mpf_rtp_config_t
mpf_rtp_media_descriptor_t
mpf_rtp_settings_t
mpf_rtp_stream_descriptor_t
mpf_rtp_termination_descriptor_t
mpf_stream_capabilities_t
mpf_termination_factory_t
mpf_termination_t
mpf_termination_vtable_t
mpf_video_stream_t
mrcp_app_message_dispatcher_t
mrcp_app_message_t
mrcp_application_t
mrcp_channel_id
mrcp_channel_t
mrcp_client_profile_t
mrcp_client_session_t
mrcp_connection_event_vtable_t
mrcp_connection_t
mrcp_control_channel_t
mrcp_control_descriptor_t
mrcp_engine_channel_event_vtable_t
mrcp_engine_channel_method_vtable_t
mrcp_engine_channel_t
mrcp_engine_config_t
mrcp_engine_event_vtable_t
mrcp_engine_method_vtable_t
mrcp_engine_t
mrcp_generic_header_t
mrcp_header_accessor_t
mrcp_header_vtable_t
mrcp_message_header_t
mrcp_message_t
mrcp_numeric_speech_length_t
mrcp_prosody_param_t
mrcp_prosody_rate_t
mrcp_prosody_volume_t
mrcp_recog_header_t
mrcp_recorder_header_t
mrcp_request_id_list_t
mrcp_resource_t
mrcp_server_profile_t
mrcp_server_session_t
mrcp_session_descriptor_t
mrcp_session_event_vtable_t
mrcp_session_request_vtable_t
mrcp_session_response_vtable_t
mrcp_session_t
mrcp_sig_agent_t
mrcp_sig_message_t
mrcp_sig_settings_t
mrcp_signaling_message_t
mrcp_sofia_client_config_t
mrcp_sofia_server_config_t
mrcp_speech_length_value_t
mrcp_start_line_t
mrcp_state_machine_t
mrcp_synth_header_t
mrcp_verifier_header_t
mrcp_voice_param_t
rtcp_header_t
rtcp_packet_t
rtcp_rr_stat_t
rtcp_sdes_item_t
rtcp_sr_stat_t
rtp_extension_header_t
rtp_header_t
rtp_receiver_t
rtp_rx_history_t
rtp_rx_periodic_history_t
rtp_rx_stat_t
rtp_termination_slot_t
rtp_transmitter_t
rtsp_client_config_t
rtsp_client_vtable_t
rtsp_header_t
rtsp_message_t
rtsp_port_range_t
rtsp_request_line_t
rtsp_server_config_t
rtsp_server_vtable_t
rtsp_start_line_t
rtsp_status_line_t
rtsp_transport_t