class G15BrightnessController(object):
    def __init__(self):
        self._libg15 = ctypes.CDLL("libg15.so.1")
        if self._libg15.initLibG15() != 0:
            raise Exception("Unable to contact keyboard")
    def __del__(self):
        self._libg15.exitLibG15()
    def set_brightness(self, level):
        level = max(min(level, 2), 0) # Prevent potential segfaults.
        self._libg15.setLCDBrightness(ctypes.c_uint(level))
        self._libg15.setKBBrightness(ctypes.c_uint(level))