RTSP與RTP(學習筆記)

         最近在學RTSP與RTP:

        RTSP是與HTTP同級的應用層協議, 主要負責數據的連接.它是雙向的,客戶端與服務端可互發請求.RTP是網絡層的協議,主要負責數據的傳輸.

       在傳輸媒體文件時,可採用RTSP+RTP+UDP的方式:媒體文件—》RTSP-》RTP包-》UDP，也可直接採用RTSP+UDP方式。

狀態機如下(轉貼):

                                      EVENT                                          TARGET

   Init                                SETUP                                         Ready
                                         TEARDOWN                               Init

   Ready                          PLAY                                             Playing
                                         RECORD                                     Recording
                                         TEARDOWN                                Init
                                         SETUP                                          Ready

   Playing                        PAUSE                                           Ready
                                        TEARDOWN                                 Init
                                         PLAY                                              Playing
                                         SETUP                                          Playing 

   Recording                   PAUSE                                          Ready
                                        TEARDOWN                                  Init
                                         RECORD                                      Recording
                                         SETUP                                           Recording