| |
| ************************************************** |
| * RTSP messages during WFD session establishment * |
| ************************************************** |
| |
| |
| There are five different states: |
| 1. capability negotiation A |
| 2. capability negotiation B |
| 3. RTSP session establishment |
| 4. WFD session establishment |
| 5. WFD session |
| |
| I'm listing the possible exchanges below, per state (except for the |
| last state: that's a lot more work and mostly not required for POC). |
| * = message |
| *** = message, valid start point for a message exchange in this state |
| |
| |
| SOURCE SINK |
| MESSAGES MESSAGES |
| ------------------------------------------------------------- |
| |
| |
| STATE 1 capability negotiation A |
| ------------------------------------------------------------- |
| *** M1 OPTIONS --------> |
| if M1 response == 200 |
| send M2 |
| |
| |
| <-------- * M2 OPTIONS |
| if M2 response = 200 |
| send M3 |
| |
| |
| * M3 GET_PARAMETER --------> |
| if M3 response == 200 |
| move to state 2, send M4 |
| |
| |
| STATE 2 capability negotiation B |
| ------------------------------------------------------------- |
| |
| *** M3 GET_PARAMETER --------> |
| |
| * M4 SET_PARAMETER --------> |
| (mandatory and optional parameters below) |
| if M4 response == 200 |
| send M5 |
| |
| |
| STATE 3 RTSP session establishment |
| ------------------------------------------------------------- |
| |
| *** M3 GET_PARAMETER --------> |
| |
| |
| *** M4 SET_PARAMETER --------> |
| |
| |
| * M5 SET_PARAMETER --------> |
| (trigger SETUP) if M5 response == 200 |
| send M6 |
| |
| |
| <-------- * M6 SETUP |
| if M6 response == 200 |
| move to state 4, send M7 |
| |
| |
| STATE 4 WFD session establishment |
| ------------------------------------------------------------- |
| |
| *** M3 GET_PARAMETER --------> |
| |
| |
| *** M5 SET_PARAMETER --------> |
| (trigger TEARDOWN) if M5 response = 200 |
| send M8 |
| |
| |
| *** M5 SET_PARAMETER --------> |
| (trigger PLAY) if M5 response == 200 |
| send M7 |
| |
| |
| <-------- * M7 PLAY |
| if M7 response == 200 |
| move to state 5, start streaming |
| |
| |
| *** M8 TEARDOWN |
| if M8 response == 200 |
| move to state 1 |
| |
| |
| |
| |
| STATE 5 WFD Session |
| --------------------------------------------------------------- |
| TODO ... |
| |
| |
| |
| |
| |
| ***************************** |
| * GET/SET Method parameters * |
| ***************************** |
| |
| |
| M = mandatory |
| O = optional |
| |
| These rules apply _before_ the WFD sessions is established |
| (in other words states 1-4): |
| |
| request reply |
| * M3 GET_PARAMETER |
| ----------------------------------------------------------------- |
| audio-codecs M M |
| video-formats M M |
| 3d-video-formats O M (if in request) |
| content-protection O M (if in request) |
| display-edid O M (if in request) |
| coupled-sink O M (if in request) |
| client-rtp-ports M M |
| I2C O M (if in request) |
| uibc-capability O M (if in request) |
| connector-type O M (if in request) |
| standby-resume-- O M (if in request) |
| |
| |
| * M4 SET_PARAMETER |
| audio-codecs M (if stream contains audio) |
| video-formats M (if no preferred-display and stream contains video) |
| 3d-video-formats M (if no preferred-display and stream includes 3d) |
| presentation-url M |
| client-rtp-ports M |
| preferred-display-- O (spec error on p 111?) |
| uibc-capability O |
| uibc-setting O |
| |
| |
| * M5 SET_PARAMETER |
| trigger-method M |
| |
