// How button press/release events are handled:
//
// button -> interrupt -> input_append_code() -> inputq -> hijack_handle_button() -> playerq -> real_input_append_code()
//
// hijack.c::input_append_code() performs raw IR translations
// hijack.c::inputq[] holds translated buttons with timing information queued for hijack to examine
// hijack.c::hijack_handle_button() interprets buttons for hijack/menu functions
// hijack.c::playerq[] holds translated buttons with timing information queued for the Empeg player software
// empeg_input.c::real_input_append_code() feeds buttons to userland
//