ossimNBandToIndexFilter.h

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//*******************************************************************
// Copyright (C) 2005 Garrett Potts
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Garrett Potts
//
//*************************************************************************
// $Id: ossimNBandToIndexFilter.h 15766 2009-10-20 12:37:09Z gpotts $
#ifndef ossimNBandToIndexFilter_HEADER
#define ossimNBandToIndexFilter_HEADER
#include <ossim/base/ossimNBandLutDataObject.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/imaging/ossimImageSourceFilter.h>
#include <vector>

class ossimImageData;

class OSSIM_DLL ossimNBandToIndexFilter : public ossimImageSourceFilter
{
public:
   ossimNBandToIndexFilter();
   
   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& origin,
                                               ossim_uint32 resLevel=0);
   
   virtual ossim_uint32 getNumberOfOutputBands() const;
   
   virtual ossimScalarType getOutputScalarType() const;
   
   void setLut(ossimNBandLutDataObject& lut);

   void setLut(const ossimFilename& file);

   virtual bool isSourceEnabled()const;
   virtual void disableSource();
   
   virtual double getNullPixelValue(ossim_uint32 band=0)const;

   virtual double getMinPixelValue(ossim_uint32 band=0)const;

   virtual double getMaxPixelValue(ossim_uint32 band=0)const;
   
   virtual void initialize();

   virtual bool saveState(ossimKeywordlist& kwl, const char* prefix=0)const;

   virtual bool loadState(const ossimKeywordlist& kwl, const char* prefix=0);

   virtual void setProperty(ossimRefPtr<ossimProperty> property);

   virtual ossimRefPtr<ossimProperty> getProperty(const ossimString& name)const;

   virtual void getPropertyNames(std::vector<ossimString>& propertyNames)const;
   
protected:
   virtual ~ossimNBandToIndexFilter();
   void allocate();

   
   virtual ossimRefPtr<ossimImageData> convertInputTile(ossimImageData* inputTile);

   template <class T> ossimRefPtr<ossimImageData> convertOutputTileTemplate(T inputDummy,
                                                                            ossimImageData* inputTile);
   template <class T1, class T2> ossimRefPtr<ossimImageData> convertInputTileToOutputTemplate(T1 inputDummy,
                                                                                              T2 outputDummy,
                                                                                              ossimImageData* inputTile);
   
   ossimRefPtr<ossimNBandLutDataObject> theLut;
   ossimRefPtr<ossimImageData>          theTile;
   ossimFilename                        theLutFilename;
   bool                                 theKeepQuantizedValueFlag;
   std::vector<ossimNBandLutDataObject::LUT_ENTRY_TYPE> theMinValues;
   std::vector<ossimNBandLutDataObject::LUT_ENTRY_TYPE> theMaxValues;
   std::vector<ossimNBandLutDataObject::LUT_ENTRY_TYPE> theNullValues;
TYPE_DATA
};

#endif