added capture card

cvStreamer.py

@@ -0,0 +1,52 @@
+import cv2
+from pywt.version import release
+
+
+class cvStreamer():
+    def __init__(self, idx):
+        self.cap = cv2.VideoCapture(idx)
+        self.idx = idx
+
+    def isOpened(self):
+        isOpen = self.cap.isOpened()
+
+        if not isOpen:
+            self.release()
+        else:
+            print(f"usb cam open at {self.idx}")
+
+
+        return isOpen
+
+    def release(self):
+        self.cap.release()
+
+    def get_frame(self):
+        _, frame = self.cap.read()
+
+        # Get the original dimensions of the frame
+        height, width = frame.shape[:2]
+
+        # Define the maximum dimensions
+        max_width = 1920
+        max_height = 1080
+
+        # Calculate the aspect ratio
+        aspect_ratio = width / height
+
+        # Resize the frame if it exceeds the maximum dimensions
+        if width > max_width or height > max_height:
+            if aspect_ratio > 1:  # Landscape orientation
+                new_width = max_width
+                new_height = int(new_width / aspect_ratio)
+            else:  # Portrait orientation
+                new_height = max_height
+                new_width = int(new_height * aspect_ratio)
+
+            # Resize the frame
+            frame = cv2.resize(frame, (new_width, new_height))
+
+        return frame
+
+    def __del__(self):
+        self.release()