comparison layer/SpectrogramLayer.h @ 330:846746e4e865 spectrogram-cache-rejig

* cache bits & bobs (wholly broken at the moment)

     Palette m_palette;
 
     struct PixmapCache
     {
         QMutex mutex;
-        QImage pixmap;
+        QImage *pixmap;
         QRect validArea;
         long startFrame;
-        size_t zoomLevel;
     };
     typedef std::map<const View *, PixmapCache *> ViewPixmapCache;
     void invalidatePixmapCaches();
     void invalidatePixmapCaches(size_t startFrame, size_t endFrame);
     mutable ViewPixmapCache m_pixmapCaches;