ossimImageHistogramSource.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
//
// Author: Garrett Potts
//
//*************************************************************************
// $Id: ossimImageHistogramSource.h 22737 2014-04-16 18:53:57Z gpotts $
#ifndef ossimImageHistogramSource_HEADER
#define ossimImageHistogramSource_HEADER
#include <ossim/base/ossimHistogramSource.h>
#include <ossim/imaging/ossimImageSource.h>
#include <ossim/base/ossimProcessInterface.h>
#include <ossim/base/ossimConnectableObjectListener.h>
#include <ossim/base/ossimObjectEvents.h>
#include <ossim/base/ossimIrect.h>

class OSSIMDLLEXPORT ossimImageHistogramSource : public ossimHistogramSource,
                                                 public ossimConnectableObjectListener,
                                                 public ossimProcessInterface
{
public:

   ossimImageHistogramSource(ossimObject* owner = 0);
   
   virtual ossimObject* getObject();
   virtual const ossimObject* getObject()const;

   void setAreaOfInterest(const ossimIrect& rect);

   ossimIrect getAreaOfInterest()const;

   void getAreaOfInterest(ossimIrect& rect)const;

   virtual ossim_uint32 getMaxNumberOfRLevels()const;

   virtual void setMaxNumberOfRLevels(ossim_uint32 number);

   virtual ossimRefPtr<ossimMultiResLevelHistogram> getHistogram(const ossimIrect& rect);

   virtual ossimRefPtr<ossimMultiResLevelHistogram> getHistogram();
   virtual bool execute();
   
   virtual bool canConnectMyInputTo(ossim_int32 myInputIndex,
                                    const ossimConnectableObject* object)const;

   void setNumberOfBinsOverride(ossim_int32 numberOfBinsOverride);

   void setMinValueOverride(ossim_float32 minValueOverride);

   void setMaxValueOverride(ossim_float32 maxValueOverride);
   void setNumberOfTiles(ossim_uint32 numberOfTiles);

   ossimHistogramMode getComputationMode()const;
   void setComputationMode(ossimHistogramMode mode);
    
   virtual void propertyEvent(ossimPropertyEvent& event);
   
   virtual void connectInputEvent(ossimConnectionEvent& event);
   
   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0)const;
    
protected:
   virtual ~ossimImageHistogramSource();

   void getBinInformation(ossim_uint32& numberOfBins,
                          ossim_float64& minValue,
                          ossim_float64& maxValue,
                          ossim_uint32 band)const;
   virtual void computeNormalModeHistogram();
   virtual void computeFastModeHistogram();
   
   ossimIrect theAreaOfInterest;
   bool       theHistogramRecomputeFlag;
   
   ossim_uint32       theMaxNumberOfResLevels; 
   ossim_float64      theMinValueOverride;
   ossim_float64      theMaxValueOverride;
   ossim_int32        theNumberOfBinsOverride;
   ossimHistogramMode theComputationMode;
   // ossim_uint32       theNumberOfTilesToUseInFastMode;
TYPE_DATA
};

#endif