Changes between Version 4 and Version 5 of media-flow

Timestamp:

Dec 5, 2006 2:04:46 PM (17 years ago)

Author:

bennylp

Comment:

--

media-flow

@@ -7 +7 @@
 == Media Interconnection ==
 
+The main building blocks for above diagram are the following components:
+
+ * a [http://www.pjsip.org/pjmedia/docs/html/group__PJMED__SND__PORT.htm Sound Device Port] which is a thin wrapper for the [http://www.pjsip.org/pjmedia/docs/html/group__PJMED__SND.htm Sound Device Abstraction] to translate sound device's {{{rec_cb()}}}/{{{play_cb()}}} callbacks into call to media port's {{{pjmedia_port_put_frame()}}}/{{{pjmedia_port_get_frame()}}}.
+ * a [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__CONF.htm Conference Bridge],
+ * a [http://www.pjsip.org/pjmedia/docs/html/group__PJMED__STRM.htm Media Stream] that is created for the call,
+ * a [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__TRANSPORT__H.htm Media Transport] that is attached to the Media Stream to receive/transmit RTP/RTCP packets.
+
 
 == Setting up Media Interconnectoin ==
+
+The media interconnection above would be set up as follows:
+
+ * during application initialization, application creates the Sound Device Port and the Conference Bridge. These two objects would normally remain throughout the life time of the application.
+ * when making outgoing call or receiving incoming call, application would create a media transport instance (normally it's an [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__TRANSPORT__UDP.htm UDP Media Transport]). From this media transport, application can put its listening address and port number in the local SDP to be given to the INVITE session.
+ * when the media in the call is established, application creates a [http://www.pjsip.org/pjmedia/docs/html/group__PJMED__SES.htm Media Session Info] from both local and remote SDP found in the INVITE session.
+ * from the Media Session Info above, application creates a [http://www.pjsip.org/pjmedia/docs/html/group__PJMED__SES.htm Media Session], specifying the Media Session Info and the Media Transport created earlier.
+ * application retrieve the Media (Audio) Stream from the Media Session, and register this Media Stream to the conference bridge.
+ * application connects the Media Stream slot in the bridge to other slots such as slot zero which normally is connected to the sound device.
+
+