cap = cv2.VideoCapture('/dev/video10')  
frames, loopTime, initTime = 0, time.time(), time.time()
fps = 0
while True:
    frames += 1
    ret, frame = cap.read()
    if not ret:
        break
        
    # 现在应该可以直接使用frame，不需要reshape
    if frames % 30 == 0:
        print("30帧平均帧率:\t", 30 / (time.time() - loopTime), "帧")
        fps = 30 / (time.time() - loopTime)
        loopTime = time.time()
    
    cv2.putText(frame, "FPS: {:.2f}".format(fps), (10, 30), 
               cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2)
    cv2.imshow("MIPI Camera", frame)
    
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()