| dsi_component | Component descriptor |
| dsi_ctrl_header | Control area header |
| dsi_event_client | Event client descriptor |
| dsi_jcp_stream | Jitter constrained periodic stream |
| dsi_packet | Packet descriptor |
| dsi_select_socket | Dsi_event_select socket list |
| dsi_select_thread_arg | Select thread arguments |
| dsi_sg_elem | Scatter gather element |
| dsi_socket | Socket descriptor It is the component-local socket reference |
| dsi_socket_ref | Socket reference It is given to the application by the component to describe a socket |
| dsi_stream | Application stream descriptor Used by in-the-middle-applications to store send- and receive-components. Used by dsi_stream_create(), dsi_stream_start(), dsi_stream_stop() and dsi_stream_close() |
| dsi_stream_cfg | Low level stream configuration for now it is specified explicitly, at some stage it should be calculated from jitter constrained periodic stream definition |
1.5.6