clang optimizations and cleanup

videoviewerwidget.h

@@ -18,7 +18,7 @@ class VideoViewerWidget : public QWidget
 
 public:
     explicit VideoViewerWidget(QWidget *parent = nullptr);
-    ~VideoViewerWidget();
+    ~VideoViewerWidget() override;
 
 signals:
     void newFrameAvailable(const QImage& frame);
@@ -36,12 +36,12 @@ private:
     void cleanupGStreamer();
     void startPipeline();
     void stopPipeline();
-    QString buildPipelineString();
+    QString buildPipelineString() const;
 
     static gboolean busCallback(GstBus* bus, GstMessage* msg, gpointer data);
     static GstFlowReturn newSampleCallback(GstAppSink* appsink, gpointer user_data);
 
-    // UI elements
+    // UI elements (8-byte pointers)
     QScrollArea* m_scrollArea;
     QLabel* m_videoDisplay;
     QPushButton* m_startBtn;
@@ -53,14 +53,18 @@ private:
     QSlider* m_zoomSlider;
     QLabel* m_zoomLabel;
 
-    // GStreamer elements
+    // GStreamer elements (8-byte pointers)
     GstElement* m_pipeline;
     GstElement* m_appSink;
+
+    // Zoom factor (8-byte double)
+    double m_zoomFactor;
+
+    // Bus watch ID (4-byte unsigned int)
     guint m_busWatchId;
 
-    // Video state
+    // Video state (large object at end)
     QImage m_currentFrame;
-    double m_zoomFactor;
 };
 
 #endif // VIDEOVIEWERWIDGET_H