import cv2
from pyzbar.pyzbar import decode

# Initialize the video capture object
cap = cv2.VideoCapture(0)

if not cap.isOpened():
    print("Failed to open the camera.")
    exit()

while True:
    # Read a frame from the camera
    ret, frame = cap.read()

    if not ret:
        print("Failed to capture a frame.")
        break

    # Decode QR codes in the frame
    qr_codes = decode(frame)

    # Process each detected QR code
    for qr_code in qr_codes:
        # Extract the decoded data
        data = qr_code.data.decode('utf-8')

        # Draw a bounding box around the QR code
        x, y, w, h = qr_code.rect
        cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 255, 0), 2)

        # Display the decoded data
        cv2.putText(frame, data, (x, y - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.9, (0, 255, 0), 2)
        
        # Print the decoded data
        print("QR Code:", data)

        # Release the video capture object and close the windows
        cap.release()
        cv2.destroyAllWindows()
        exit()

    # Display the frame
    cv2.imshow('QR Code Reader', frame)

    # Check for key press to exit
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# Release the video capture object and close the windows
cap.release()
cv2.destroyAllWindows()