Mediastreamer2 (http://www.linphone.org/eng/documentation/dev/mediastreamer2.html) is a library much like GStreamer (http://gstreamer.freedesktop.org). It is about modular processing of continuous data flow.

Mediastreamer2 is used for the Linphone (http://www.linphone.org) software.

In case that anybody is intersted, here are the very first and partial bindings for Mediastreamer2:

https://github.com/axeoth/mediastreamer2_layer