def _run_engine(engine_factory, conn):
engine = engine_factory()
logger.info('Cognitive engine started')
while True:
input_frame = gabriel_pb2.InputFrame()
input_frame.ParseFromString(conn.recv_bytes())
result_wrapper = engine.handle(input_frame)
conn.send_bytes(result_wrapper.SerializeToString())
async def producer():
_, frame = capture.read()
cv2.putText(frame, text, ORG, FONT_FACE, FONT_SCALE, COLOR)
_, jpeg_frame=cv2.imencode('.jpg', frame)
input_frame = gabriel_pb2.InputFrame()
input_frame.payload_type = gabriel_pb2.PayloadType.IMAGE
input_frame.payloads.append(jpeg_frame.tobytes())
return input_frame
def send_frames(source):
capture = cv2.VideoCapture(0)
while True:
_, frame = capture.read()
_, jpeg_frame = cv2.imencode('.jpg', frame)
input_frame = gabriel_pb2.InputFrame()
input_frame.payload_type = gabriel_pb2.PayloadType.IMAGE
input_frame.payloads.append(jpeg_frame.tobytes())
source.send(input_frame)
time.sleep(0.1)
async def producer():
_, frame = self._video_capture.read()
if frame is None:
return None
frame = self._preprocess(frame)
_, jpeg_frame = cv2.imencode('.jpg', frame)
input_frame = gabriel_pb2.InputFrame()
input_frame.payload_type = gabriel_pb2.PayloadType.IMAGE
input_frame.payloads.append(jpeg_frame.tobytes())
extras = self._produce_extras()
if extras is not None:
input_frame.extras.Pack(extras)
return input_frame
def run(engine,
source_name,
server_address,
all_responses_required=False,
timeout=TEN_SECONDS,
request_retries=REQUEST_RETRIES):
context = zmq.Context()
while request_retries > 0:
socket = context.socket(zmq.REQ)
socket.connect(server_address)
from_standalone_engine = gabriel_pb2.FromStandaloneEngine()
from_standalone_engine.welcome.source_name = source_name
from_standalone_engine.welcome.all_responses_required = (
all_responses_required)
socket.send(from_standalone_engine.SerializeToString())
logger.info('Sent welcome message to server')
while True:
if socket.poll(timeout) == 0:
logger.warning('No response from server')
socket.setsockopt(zmq.LINGER, 0)
socket.close()
request_retries -= 1
break
message_from_server = socket.recv()
if message_from_server == network_engine.HEARTBEAT:
socket.send(network_engine.HEARTBEAT)
continue
input_frame = gabriel_pb2.InputFrame()
input_frame.ParseFromString(message_from_server)
result_wrapper = engine.handle(input_frame)
from_standalone_engine = gabriel_pb2.FromStandaloneEngine()
from_standalone_engine.result_wrapper.CopyFrom(result_wrapper)
socket.send(from_standalone_engine.SerializeToString())
logger.warning('Ran out of retires. Abandoning server connection.')
async def producer():
frame = self.recv_array()
if frame is None:
return None
frame = self._preprocess(frame)
if self.display_frames:
cv2.imshow("Frames sent to ZmqAdapter", frame)
cv2.waitKey(1)
_, jpeg_frame = cv2.imencode('.jpg', frame)
input_frame = gabriel_pb2.InputFrame()
input_frame.payload_type = gabriel_pb2.PayloadType.IMAGE
input_frame.payloads.append(jpeg_frame.tobytes())
extras = self.produce_extras()
if extras is not None:
input_frame.extras.Pack(extras)
logger.debug(f"Sending frame {self.frames_processed}...")
return input_frame
def reader_callback():
input_frame = gabriel_pb2.InputFrame()
input_frame.ParseFromString(self._read.recv_bytes())
self._latest_input_frame = input_frame
self._frame_available.set()
async def producer():
# Do not use time.sleep. This would stop the event loop.
await asyncio.sleep(1)
return gabriel_pb2.InputFrame()