You can do augmented reality provide you have access to camera and image context of the camera.
Since camera is accessible on all devices. Then that means you only need to access to the image context. I don't know if C2 gives access to the context or not. If C2 doesn't then you can make your own plugin to forceibly access the context. Worse case make your own camera plugin to access the image.
So I would say yes. Yes you can do augmented reality. But probably more work than most users would put in.