BarcoderAPI.py

import cv2
from pyzbar import pyzbar
def read_barcodes(frame):
    barcodes = pyzbar.decode(frame)
    for barcode in barcodes:
        x, y , w, h = barcode.rect
        global barcode_info
        barcode_info = barcode.data.decode('utf-8')
        cv2.rectangle(frame, (x, y),(x+w, y+h), (0, 255, 0), 2)
        global detected
        detected = True
        print(barcode_info)
        
        font = cv2.FONT_HERSHEY_DUPLEX
        cv2.putText(frame, barcode_info, (x + 6, y - 6), font, 2.0, (255, 255, 255), 1)
        # with open("barcode_result.txt", mode ='w') as file:
        #     file.write("Recognized Barcode:" + barcode_info)
    return frame

def main():
    # Change the value 0 to 1 depending on the device.
    camera = cv2.VideoCapture(0)
    ret, frame = camera.read()
    while ret:
        ret, frame = camera.read()
        frame = read_barcodes(frame)
        cv2.imshow('Barcode/QR code reader', frame)
        if cv2.waitKey(1) & 0xFF == 27 or detected:
            break
    camera.release()
    cv2.destroyAllWindows()
    try:
        return barcode_info
    except:
        pass

detected = False
if __name__ == '__main__':  
    main()