From 673cc64169b6fc5db2b6501ef337409eb4b3de99 Mon Sep 17 00:00:00 2001
From: bartool <bartoolina@gmail.com>
Date: Thu, 7 May 2026 00:39:18 +0200
Subject: [PATCH] Add camera rotation feature with configurable degrees

---
 README.md       |  1 +
 app/camera.py   | 16 ++++++++++++++++
 app/config.py   |  1 +
 app_config.json |  1 +
 4 files changed, 19 insertions(+)

diff --git a/README.md b/README.md
index e70e9d8..1f573a2 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,7 @@ Glowny plik konfiguracji: `app_config.json`.
 Istotne ustawienia:
 
 - `camera.width`, `camera.height`, `camera.fps` - rozdzielczosc i FPS kamery.
+- `camera.rotation_degrees` - obrot obrazu z kamery: `0`, `90`, `180` albo `270`.
 - `camera.properties` - parametry OpenCV ustawiane na kamerze, np. jasnosc, kontrast, ekspozycja. `null` oznacza brak wymuszania wartosci.
 - `detection.mode` - `best` rysuje najlepsza etykiete, `all` rysuje wszystkie wykrycia.
 - `detection.frame_stride` - YOLO uruchamiany co N klatek podczas aktywnego wykrywania.
diff --git a/app/camera.py b/app/camera.py
index e7e0700..cf56954 100644
--- a/app/camera.py
+++ b/app/camera.py
@@ -35,6 +35,19 @@ def backend_for_name(name: str) -> int:
     return cv2.CAP_ANY
 
 
+def rotate_frame(frame: np.ndarray, degrees: int) -> np.ndarray:
+    normalized = degrees % 360
+    if normalized == 0:
+        return frame
+    if normalized == 90:
+        return cv2.rotate(frame, cv2.ROTATE_90_CLOCKWISE)
+    if normalized == 180:
+        return cv2.rotate(frame, cv2.ROTATE_180)
+    if normalized == 270:
+        return cv2.rotate(frame, cv2.ROTATE_90_COUNTERCLOCKWISE)
+    return frame
+
+
 class CameraWorker(QThread):
     frame_ready = Signal(object)
     detection_ready = Signal(object)
@@ -98,6 +111,9 @@ class CameraWorker(QThread):
                     time.sleep(0.2)
                     continue
 
+                with self._lock:
+                    rotation_degrees = int(self.config["camera"].get("rotation_degrees", 0))
+                frame = rotate_frame(frame, rotation_degrees)
                 self.frame_ready.emit(frame)
                 self._maybe_detect(frame)
         finally:
diff --git a/app/config.py b/app/config.py
index 25bee96..7dd74d1 100644
--- a/app/config.py
+++ b/app/config.py
@@ -17,6 +17,7 @@ DEFAULT_CONFIG: dict[str, Any] = {
         "height": 1080,
         "fps": 30,
         "backend": "auto",
+        "rotation_degrees": 0,
         "properties": {
             "brightness": None,
             "contrast": None,
diff --git a/app_config.json b/app_config.json
index ac8d937..956d52b 100644
--- a/app_config.json
+++ b/app_config.json
@@ -5,6 +5,7 @@
     "height": 1080,
     "fps": 30,
     "backend": "auto",
+    "rotation_degrees": 0,
     "properties": {
       "brightness": null,
       "contrast": null,