class Camera():
def __init__(self,
capture=cv2.VideoCapture,
width=800,
height=600,
label=None,
label_name=None):
# Get the capture object from the MainWindow init.
self.capture = capture
self.capture.set(3, int(width))
self.capture.set(4, int(height))
self.width = width
self.height = height
self.label = label
self.label_name = label_name
self.currentFrame = np.array([])
self.logger = MyLogging(logger_name='user').logger
self.logger.info('Create [Capture]: %s [Label_name]: %s' %
(self.capture, self.label_name))
def getFrame(self):
try:
# Get frame and convert it to PixMap
ret, img = self.capture.read()
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
# Add the hisself Cap object's label name in pic top.
if self.label_name:
cv2.putText(img, self.label_name, (18, 56), 0, 1,
(129, 216, 207), 3)
# Get the height, width, byserPer from this img.
height, width, bytesPer = img.shape
# bytesPerLine = bytesPer*3
# Convert the img to QPixmap type, because the QtLabel just
# accept this type.
img = QImage(img, width, height, QImage.Format_RGB888)
img = QPixmap.fromImage(img)
# Set label show img. And update it.
self.label.setPixmap(img)
except:
self.logger.error('Some error happened in <cameraModule.py | '
'getFrame>.')
sys.exit(0)
def refresh(self):
# 1. Create a new Thread Class and Init it.
self.cap_timer = Camera_Timer()
self.logger.info("Camera_Timer: [%s] has created." % self.cap_timer)
# 2. Connect the thing let signal to do it.
self.cap_timer.update.connect(self.getFrame)
# 3. Start Thread.
try:
self.cap_timer.start()
except BaseException:
self.cap_timer.stop()
self.cap_timer.quit()
def quit(self):
self.cap_timer.stop()
self.cap_timer.quit()
class SelfCheck(BaseCheck):
# This config is reading by Config.out_config Module. <config dict>
def __init__(self, cofig):
super(SelfCheck, self).__init__(config)
self._config = config
self._necessary_check = config['necessary_check']
self.mylogger = MyLogging(logger_name='user').logger
self._show_cam_item = config['operating_mode']['show_cam_item']
self.check_status = False
if int(self.necessary_check['database_check']):
self.databaseCheck()
if int(self.necessary_check['internet_check']):
self._InternetCheck()
if int(self.necessary_check['gpu_check']):
self.gpuCheck()
def cameraCheck(self, cam_object=BaseCamera()):
if not cam_object.isOpen():
self.mylogger.error('%s fails inspection [FAILED].' %
cam_object.cam_name)
def weigherCheck(self, weigher_object=Weigher()):
weigher = weigher_object
self.weigher = weigher.weigher
if self.weigher.open(QIODevice.ReadOnly):
# The QSerial.waitForReadyRead function blocks until new data is available for reading and the readyRead() signal has been emitted.
# This function returns true if the readyRead() signal is emitted and there is new data available for reading;
# Otherwise this function returns false (if an error occurred or the operation timed out).
if self.weigher.waitForReadyRead(8000): # the unit is millisecond;
self.weigher.readAll()
status_data_convert = True
convert_times = 0
can_readline_times = 0
while status_data_convert:
if self.weigher.waitForReadyRead(500):
if self.weigher.canReadLine():
weigher.read()
try:
# This will raise error if the data can not be converted successfully.
status_data_convert = False
except BaseException:
convert_times = convert_times + 1
self.mylogger.warning(
'[Weigher] is trying to '
'convert the data '
'fails with total %s times.' %
convert_times)
if convert_times > 29:
self.mylogger.error(
'[Weigher]: the '
'string data given by weigher can not be converted to the float data successfully.'
)
sys.exit()
else:
can_readline_times = can_readline_times + 1
self.mylogger.warning(
'canReadLine fails with total %s '
'times.' % can_readline_times)
if can_readline_times > 29:
self.mylogger.error(
'Weigher problem: there is no readLine signal too many times.'
)
sys.exit()
else:
convert_times = convert_times + 1
self.mylogger.warning(
'waitForReadyRead fails with total %s '
'times.' % convert_times)
if convert_times > 29:
self.mylogger.error(
'Weigher problem: the string data given by weigher can not be converted to the float data successfully.'
)
sys.exit()
else:
self.mylogger.error(
'Weigher problem: no data received from the weigher.')
sys.exit()
self.weigher.close()
else:
self.mylogger.error(
'Weigher problem: the connection to the specific weigher fails. Please check the port name.'
)
sys.exit()
def databaseCheck(self):
pass
def _InternetCheck(self):
pass
def gpuCheck(self):
pass
# Private parameters.
@property
def config(self):
return self._config
@property
def necessary_check(self):
return self._necessary_check
@property
def show_cam_item(self):
return self._show_cam_item