comparison base/FFTCache.h @ 108:0c19e50bad7c

* add a column bitmap to the matrix file object to record which columns
  are available (optimisation for refreshing during fft creation)

 	
     virtual float getMagnitudeAt(size_t x, size_t y) const = 0;
     virtual float getNormalizedMagnitudeAt(size_t x, size_t y) const = 0;
     virtual float getPhaseAt(size_t x, size_t y) const = 0;
 
-    virtual void setNormalizationFactor(size_t x, float factor) = 0;
-    virtual void setMagnitudeAt(size_t x, size_t y, float mag) = 0;
-    virtual void setNormalizedMagnitudeAt(size_t x, size_t y, float norm) = 0;
-    virtual void setPhaseAt(size_t x, size_t y, float phase) = 0;
-
+    virtual bool haveColumnAt(size_t x) const = 0;
     virtual void setColumnAt(size_t x, float *mags, float *phases, float factor) = 0;
 
     bool isLocalPeak(size_t x, size_t y) const {
         float mag = getMagnitudeAt(x, y);
         if (y > 0 && mag < getMagnitudeAt(x, y - 1)) return false;

         if (x < m_width && y < m_height) {
             m_phase[x][y] = uint16_t(int16_t((phase * 32767) / M_PI));
         }
     }
     
+    virtual bool haveColumnAt(size_t x) const {
+        return true;
+    }
+
     virtual void setColumnAt(size_t x, float *mags, float *phases, float factor) {
         setNormalizationFactor(x, factor);
         for (size_t y = 0; y < m_height; ++y) {
             setMagnitudeAt(x, y, mags[y]);
             setPhaseAt(x, y, phases[y]);