[Q] Porting "Screen Mirroring" (aka. GroupCast) to s2 i9100 topic

Hi xda, I recently bought a Samsung Smart Tv, which have in the "sources" menu, the option "screen mirroring".
This works by going to the settings of your galaxy s3 or greater, and under display, toggling the GroupCast...
I have tried it with my father's note3, and it is really awsome playing games and see them in your full HD TV!!!

I have searched allmost everywhere in the internet for someone ported this feature somehow to tw-based Roms for our s2, i9100, but found nothing... :(

So, if someone have it somehow, please share the way to do it, or, developers, please port this really awsome feature to our beloved s2...


Thanks in advance,
Spyros