Well Airplay mirroring with the open source version of Airplay is impossible, it's protected by Apples Fairplay DRM system.
Someone is working on the same kind of system both Apple/Intel use, it's called Android Transporter
however for it to work the phone/tablet must have a H.264 encoder present in the chipset and be running a custom ROM.
If there's anything needed on the box side the Xios could probably run it, the Android Transporter guys demo it running on a Raspberry Pi so it's just a H.264 video stream.They say
there are going to release the source code so it's up to Google to add support for the feature globally & to make it all seamless.