DXR3 - Abadoned?

[Jaroslav Tulach]

Hi.
Recently I've got an idea to turn my DXR3 card to DLNA device - a DMR that I 
could control from my tablet. Things looked simple. There is Cling[1] 
project reusing gstreamer-java and working fine. The whole problem was to 
adopt it to output to DXR3. 

I knew there was DXR3 support in GStreamer few years ago, so I thought I'll 
make it in a day. But alas, dxr3videosink is not installed on my Ubuntu 
10.04!

I started to dig the sources, and found out that in-spite the sources exist 
in sys/dxr3 directory of the gst-plugins-bad repository, they are not 
included in configure.ac. Looks like the reference to them has been removed 
in 2005:

$ git show 646e2af

+ Christian Schaller <uraeus at gnome.org>
+
+       * Update configure.ac and Makefiles to only build what is actually
+       ported and not moved into gst-plugins-base

But then I found out that there are commits in sys/dxr3 even from 2011! 
Maybe it is not completely abandoned.

What is the status? Is DXR3 still supported? If so, what is the right way to 
compile it?

Thanks in advance for spending your time and helping me understand.
Jaroslav Tulach

PS: To adjust level of answers: I can read and modify C code. I have little 
experience with autoconf, automake & co. beyond executing them.

[1] http://4thline.org/projects/cling/