def invalidate(self):
"""Releases all resources claimed by this instance.
Releases the lock on the vjoy device instance as well as terminating
the keep alive timer.
"""
if self.vjoy_id:
self.reset()
VJoyInterface.RelinquishVJD(self.vjoy_id)
self.vjoy_id = None
self._keep_alive_timer.cancel()
def device_available(vjoy_id):
"""Returns whether or not a device is available, i.e. can be acquired.
:param vjoy_id id of the vjoy device to check
:return True if the device is available, False otherwise
"""
dev_free = VJoyInterface.GetVJDStatus(vjoy_id) == VJoyState.Free.value
dev_acquire = VJoyInterface.AcquireVJD(vjoy_id)
VJoyInterface.RelinquishVJD(vjoy_id)
return dev_free & dev_acquire