libCEC allows you in combination with the right hardware to control your device
with your TV remote control utilising your existing HDMI cabling. This library
is an enabling platform for the CEC bus in HDMI, it allows developers to
interact with other HDMI devices without having to worry about the communication
overhead, handshaking, and the various ways of sending a message for each
vendor.

WWW: http://libcec.pulse-eight.com/