FIilter usb devices

backend/app/classes/CamerasHandler.py

@@ -0,0 +1,19 @@
+import cscore
+import cv2
+
+
+class CamerasHandler:
+
+    @staticmethod
+    def get_cameras():
+        arr = []
+
+        usb_devices = cscore.UsbCamera.enumerateUsbCameras()
+
+        for index in range(len(usb_devices)):
+            cap = cv2.VideoCapture(index)
+            if cap.isOpened():
+                arr.append(index)
+            cap.release()
+            index += 1
+        return [usb_devices[i] for i in arr]