Screen Sharing and Audio Video Chat API for iOS

I need help on integrating a "Screen Sharing from iPhone/iPad to PC or Pc to iPhone/iPad, capture screen shot, Audio and Video call" in one of my iOS app. I have tried the following open source for this requirement. But, these are not fit for my requirement.

1. openblox


2. tokbox


3. team viewer


4. scringo

If anyone knows any open source or API for this requirement please help me on this. Looking forward your reply. Thanks in advance.