have only 1 HDMI. Need 2 for Apple TV & Direct TV- Splitter? Switch?

I have a TV that only has one HDMI. It is currently being used by my Direct TV. I would like to hook up Apple TV but don't have another HDMI on this TV. Is there an adapter such as (splitter,switch) or something..etc. that I can purchase so I can use both? -Thanks!