[Python] How i can use hardware decode h264

I am decoding a H264 stream using python av,but it can not use gpu,so i want to use Deffcode or other to instead.But I can't make the h264 frame as the input of Deffcode.

codec = CodecContext.create("h264", "r")
while self.alive:
try:
raw_h264 = self.__video_socket.recv(0x10000)
if raw_h264 == b"":
raise ConnectionError("Video stream is disconnected")
packets = codec.parse(raw_h264)
for packet in packets:
frames = codec.decode(packet)
for frame in frames:
frame = frame.to_ndarray(format="bgr24")
if self.flip:
frame = frame[:, ::-1, :]
self.last_frame = frame
self.resolution = (frame.shape[1], frame.shape[0])
self.__send_to_listeners(EVENT_FRAME, frame)
except (BlockingIOError, InvalidDataError):
time.sleep(0.01)
if not self.block_frame:
self.__send_to_listeners(EVENT_FRAME, None)
except (ConnectionError, OSError) as e: # Socket Closed
if self.alive:
self.__send_to_listeners(EVENT_DISCONNECT)
self.stop()
raise e

Continue reading...