gstreamer plugin writing

[Mayank Agarwal]

Hi,
  I am new to the GStreamer framework. Gone through the application
development and plug-in development document.
  Please guide how can i write video encode/decode plugins.soc video
decoders will be used.

Is there any document available.My doubts are:

1.How can i go about writing the simple plugin for doing the video
decoding using SOC video decoder
2.any sample gst plugin which i can refer to do above task
3.any complexity involved in above.


Regards,
Mayank