merge with dev - I hope no error

rtengine/rawimage.h

@@ -124,10 +124,10 @@ public:
     float** compress_image(unsigned int frameNum, bool freeImage = true); // revert to compressed pixels format and release image data
     float** data;             // holds pixel values, data[i][j] corresponds to the ith row and jth column
     unsigned prefilters;               // original filters saved ( used for 4 color processing )
-    unsigned int getFrameCount() const
-    {
-        return is_raw;
-    }
+    unsigned int getFrameCount() const { return is_raw; }
+
+    double getBaselineExposure() const { return RT_baseline_exposure; }
+ 
 protected:
     Glib::ustring filename; // complete filename
     int rotate_deg; // 0,90,180,270 degree of rotation: info taken by dcraw from exif