Create app.py

app.py

@@ -0,0 +1,52 @@
+from flask import Flask, request, jsonify
+from flask_cors import CORS
+import cv2
+import numpy as np
+
+app = Flask(__name__)
+CORS(app)
+
+# Initialize QRCodeDetector
+qr_detector = cv2.QRCodeDetector()
+
+# Simple in-memory state for previous frame ROI (for change detection)
+prev_timer_roi = None
+CHANGE_THRESHOLD = 500  # You might need to tune this
+
+def is_timer_running(current_roi):
+    global prev_timer_roi
+    if prev_timer_roi is None:
+        prev_timer_roi = current_roi
+        return False
+
+    diff = cv2.absdiff(prev_timer_roi, current_roi)
+    gray = cv2.cvtColor(diff, cv2.COLOR_BGR2GRAY)
+    _, thresh = cv2.threshold(gray, 25, 255, cv2.THRESH_BINARY)
+    changed_pixels = cv2.countNonZero(thresh)
+
+    prev_timer_roi = current_roi
+    return changed_pixels > CHANGE_THRESHOLD
+
+@app.route('/scan', methods=['POST'])
+def scan_qr_when_timer_active():
+    file = request.files.get('image')
+    if not file:
+        return jsonify({'error': 'No image uploaded'}), 400
+
+    img_bytes = file.read()
+    npimg = np.frombuffer(img_bytes, np.uint8)
+    frame = cv2.imdecode(npimg, cv2.IMREAD_COLOR)
+
+    # You may need to fine-tune this ROI for your use case
+    timer_roi = frame[130:160, 360:430]  # adjust based on your timer position
+
+    if is_timer_running(timer_roi):
+        data, points, _ = qr_detector.detectAndDecode(frame)
+        if data:
+            return jsonify({'qr_data': data})
+        return jsonify({'message': 'QR not detected'}), 204
+    else:
+        return jsonify({'message': 'Timer not running'}), 204
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=7860)