125 lines
3.6 KiB
Python
125 lines
3.6 KiB
Python
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import multiprocessing
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import threading
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from queue import Empty
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from typing import Dict, List, Optional
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from platypush.plugins import RunnablePlugin, action
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from platypush.schemas.joystick import JoystickStatusSchema
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from ._inputs import DeviceManager, GamePad
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from ._manager import JoystickManager
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class JoystickPlugin(RunnablePlugin):
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"""
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A plugin to monitor joystick events.
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"""
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def __init__(self, poll_interval: float = 0.025, **kwargs):
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"""
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:param poll_interval: Polling interval in seconds (default: 0.025)
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"""
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super().__init__(poll_interval=poll_interval, **kwargs)
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self._dev_managers: Dict[str, JoystickManager] = {}
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self._state_queue = multiprocessing.Queue()
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self._state_monitor_thread: Optional[threading.Thread] = None
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@staticmethod
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def _key(device: GamePad) -> str:
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return device.get_char_device_path()
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def _start_manager(self, device: GamePad):
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if device in self._dev_managers:
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return
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dev_manager = JoystickManager(
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device=device,
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poll_interval=self.poll_interval,
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state_queue=self._state_queue,
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)
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dev_manager.start()
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self._dev_managers[self._key(device)] = dev_manager
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def _stop_manager(self, device: str):
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dev_manager = self._dev_managers.get(device)
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if not dev_manager:
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return
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dev_manager.stop()
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dev_manager.join(1)
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if dev_manager.is_alive():
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dev_manager.kill()
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del self._dev_managers[device]
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def _state_monitor(self):
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while not self.should_stop():
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try:
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state = self._state_queue.get(timeout=0.5)
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device = state.device
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if device not in self._dev_managers:
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continue
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self._dev_managers[device].state = state.state
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except Empty:
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pass
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except Exception as e:
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self.logger.exception(e)
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def main(self):
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if not self._state_monitor_thread:
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self._state_monitor_thread = threading.Thread(
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target=self._state_monitor, daemon=True
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)
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self._state_monitor_thread.start()
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while not self.should_stop():
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try:
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devices = DeviceManager().gamepads
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missing_devices_keys = set(self._dev_managers.keys()) - {
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self._key(dev) for dev in devices
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}
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new_devices = {
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dev for dev in devices if self._key(dev) not in self._dev_managers
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}
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# Stop managers for devices that are no longer connected
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for dev in missing_devices_keys:
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self._stop_manager(dev)
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# Start managers for new devices
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for dev in new_devices:
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self._start_manager(dev)
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except Exception as e:
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self.logger.exception(e)
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finally:
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self.wait_stop(max(0.5, min(10, (self.poll_interval or 0) * 10)))
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def stop(self):
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for dev in list(self._dev_managers.keys()):
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self._stop_manager(dev)
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super().stop()
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@action
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def status(self) -> List[dict]:
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"""
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:return: .. schema:: joystick.JoystickStatusSchema(many=True)
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"""
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return JoystickStatusSchema().dump(
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[
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{
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'device': dev.device,
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'state': dev.state,
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}
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for dev in self._dev_managers.values()
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],
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many=True,
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)
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# vim:sw=4:ts=4:et:
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