def startMain(self):
#set queue size
self.cam_queue = mp.Queue(maxsize=100)
#get all cams
time.sleep(3)
self.stopbit = mp.Event()
self.camProcess = vs.StreamCapture(self.camlink,
self.stopbit,
self.cam_queue,
self.framerate)
self.camProcess.start()
# calculate FPS
lastFTime = time.time()
try:
while True:
if not self.cam_queue.empty():
print('Got frame')
cmd, val = self.cam_queue.get()
'''
#calculate FPS
diffTime = time.time() - lastFTime`
fps = 1 / diffTime
# print(fps)
'''
lastFTime = time.time()
# if cmd == vs.StreamCommands.RESOLUTION:
# pass #print(val)
if cmd == vs.StreamCommands.FRAME:
if val is not None:
# val = cv2.cvtColor(val, cv2.COLOR_BayerBG2BGR)
cv2.imshow('Cam: ' + self.camlink, val)
cv2.waitKey(1)
except KeyboardInterrupt:
print('Caught Keyboard interrupt')
except:
e = sys.exc_info()
print('Caught Main Exception')
print(e)
self.stopCamStream()
cv2.destroyAllWindows()
def startMain(self):
#set queue size
self.cam_queue = mp.Queue(maxsize=7)
self.stopbit = mp.Event()
self.camProcess = vs.StreamCapture(self.camlink, self.stopbit,
self.cam_queue, self.framerate)
self.t = Thread(target=self.camProcess.run)
self.t.setDaemon = True
self.t.start()
context = zmq.Context()
socket = context.socket(zmq.PUB)
socket.connect('tcp://' + self.address + ':' + self.port)
socket.set_hwm(1)
fps = Rate()
fps.start()
lastframecount = 0
frame = Frame()
frame.srcid = self.src
next_time = time.perf_counter() + 1.0
try:
self.fps.start()
while True:
if not self.cam_queue.empty():
# print('Got frame')
cmd, val = self.cam_queue.get()
self.timestamp = datetime.datetime.now()
self.fps.update()
# if cmd == vs.StreamCommands.RESOLUTION:
# pass #print(val)
if cmd == vs.StreamCommands.FRAME:
frame.count += 1
frame.img = val
frame.timestamp = self.timestamp
frame.camfps = self.fps.fps()
if time.perf_counter() > next_time:
next_time += 1.0
if self.verbose:
print(
f'FPS = {frame.camfps:.2f} {frame.streamfps:.2f}'
)
if self.verbose and frame.img is not None:
cv2.imshow(f'CAM {frame.srcid}', frame.img)
cv2.waitKey(1)
if frame.count is not None:
if frame.count != lastframecount:
lastframecount = frame.count
socket.send_pyobj(frame)
fps.update()
frame.streamfps = fps.fps()
else:
time.sleep(1 / self.framerate)
except KeyboardInterrupt:
print('Caught Keyboard interrupt')
except Exception as e:
print('Caught Main Exception')
print(e)
self.stopCamStream()
cv2.destroyAllWindows()