def __init__(self, device):
"""Initializes the device data based on the given device.
:param device pyGame joystick object
"""
self._hardware_id = get_device_guid(device)
self._windows_id = sdl2.SDL_JoystickInstanceID(device)
self._vendor_id = sdl2.SDL_JoystickGetVendor(device)
self._product_id = sdl2.SDL_JoystickGetProduct(device)
name_object = sdl2.SDL_JoystickName(device)
if name_object is None:
self._name = "Unknown device"
logging.getLogger("system").error(
"Encountered an invalid device name for device {:d}".format(
self._windows_id))
else:
self._name = name_object.decode("utf-8")
self._is_virtual = self._name == "vJoy Device"
# Default mapping from axis id to physical axis number. This defaults
# to a linear 1:1 mapping but for vJoy devices can change
self._axes = []
for i in range(sdl2.SDL_JoystickNumAxes(device)):
self._axes.append((i + 1, i + 1))
self._buttons = sdl2.SDL_JoystickNumButtons(device)
self._hats = sdl2.SDL_JoystickNumHats(device)
self._vjoy_id = 0
self._device_id = common.DeviceIdentifier(self._hardware_id,
self._windows_id)
def get_device_guid(device):
"""Returns the GUID of the provided device.
:param device SDL2 joystick device for which to get the GUID
:return GUID for the provided device
"""
vendor_id = sdl2.SDL_JoystickGetVendor(device)
product_id = sdl2.SDL_JoystickGetProduct(device)
return (vendor_id << 16) + product_id