def test_brightness(self):
camera = webcam.Camera(0)
camera.open()
brightness = camera.getBrightness()
self.assertGreaterEqual(brightness, 0)
self.assertLessEqual(brightness, 255)
camera.close()
def test_strings(self):
camera = webcam.Camera(0)
camera.open()
if camera.deviceOpened():
self.assertIsInstance(camera.backendName(), str)
self.assertIsInstance(camera.cv_buildInformation(), str)
self.assertIsInstance(camera.properties(), dict)
camera.close()
def test_image(self):
camera = webcam.Camera(0)
camera.open()
ret, frame = camera.getFrame()
if ret:
self.assertGreater(len(camera.hsvColor(frame)), 0)
self.assertGreater(len(camera.rgbColor(frame)), 0)
camera.showImage(frame)
else:
self.assertIsNone(frame)
camera.close()
def test_property(self):
camera = webcam.Camera(0)
camera.open()
if camera.deviceOpened(
) and "CAP_PROP_FRAME_WIDTH" in camera.properties():
camera.setProp(cv2.CAP_PROP_FRAME_WIDTH, 320)
camera.setProp(cv2.CAP_PROP_FRAME_HEIGHT, 240)
self.assertEqual(camera.getProp(cv2.CAP_PROP_FRAME_HEIGHT), 240)
ret, frame = camera.getFrame()
if ret:
self.assertEqual(len(frame), 240)
camera.close()
def _cameraButtonClick(self):
"""
Camera test button click event
"""
try:
camLoc = int(self._view.cameraEdit.text())
except ValueError:
camLoc = self._view.cameraEdit.text()
camera = webcam.Camera(camLoc)
camera.open()
if camera.deviceOpened():
details = dict()
details["backendName"] = camera.backendName()
details["bInfo"] = camera.cv_buildInformation()
details["properties"] = camera.properties()
camera.disable_autoExposure()
ret, frame = camera.getFrame()
if ret:
self.camera_view = camerawindow.CameraWindow(self.lang)
rgb = camera.rgbColor(frame)
hsv = camera.hsvColor(frame)
self.camera_view.createImages(rgb, hsv)
if camera._oldval_autoExposure != float(
0) and camera._oldval_autoExposure == camera.getProp(
cv2.CAP_PROP_AUTO_EXPOSURE):
details["exposure_available"] = False
else:
details["exposure_available"] = True
details["brightness"] = round(100 * camera.getBrightness() /
255)
self.camera_view.createDetails(details)
self.camera_view.setWindowModality(Qt.ApplicationModal)
self.camera_view.showMaximized()
else:
QMessageBox().warning(self._view, "",
_("Can't get frame from camera."))
camera.enable_autoExposure()
else:
QMessageBox().warning(self._view, "", _("Can't open device."))
camera.close()
def __init__(self, settings, lang):
global _
_ = lang.gettext
self.camera = webcam.Camera( settings.camera )
self.screen = screen.Screen(settings, lang)
self.gain = settings.gain