make camera global

raspberry/roberto/__init__.py

@@ -12,7 +12,8 @@ from flask_login import LoginManager
 # to the application at this point.
 login = LoginManager()
 login.login_view = "users.login"
-#from roberto.camera.camera_opencv import Camera
+from roberto.camera.camera_opencv import Camera
+camera = Camera()
 
 ######################################
 #### Application Factory Function ####

raspberry/roberto/views/frontend/routes.py

@@ -22,6 +22,7 @@ def gen(camera):
 @frontend_blueprint.route('/video_feed')
 def video_feed():
     """Video streaming route. Put this in the src attribute of an img tag."""
-    from roberto.camera.camera_opencv import Camera
-    return Response(gen(Camera()),
+    from roberto import camera
+    camera.__init__()
+    return Response(gen(camera),
                     mimetype='multipart/x-mixed-replace; boundary=frame')