feat: overlay résolution et FPS réel sur le flux vidéo

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

camera_server.py

@@ -47,13 +47,28 @@ def capture_loop():
         return
 
     print("Caméra initialisée")
+    fps_counter = 0
+    fps_display = 0.0
+    fps_timer = time.time()
     while True:
         ok, frame = cam.read()
         if ok:
+            fps_counter += 1
+            now = time.time()
+            if now - fps_timer >= 1.0:
+                fps_display = fps_counter / (now - fps_timer)
+                fps_counter = 0
+                fps_timer = now
+
             frame = apply_settings(frame)
+            h, w = frame.shape[:2]
+            label = f"{w}x{h} | {fps_display:.1f} fps"
+            cv2.putText(frame, label, (8, h - 8),
+                        cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 0), 2)
+            cv2.putText(frame, label, (8, h - 8),
+                        cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 1)
             with frame_lock:
                 current_frame = frame.copy()
-        time.sleep(0.066)  # ~15fps
 
 def generate_mjpeg():
     while True: