ossimImageSourceSequencer.h

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//*******************************************************************
// Copyright (C) 2000 ImageLinks Inc.
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  Garrett Potts
//
//*******************************************************************
//  $Id: ossimImageSourceSequencer.h 23081 2015-01-14 21:38:42Z dburken $
#ifndef ossimImageSourceSequencer_HEADER
#define ossimImageSourceSequencer_HEADER 1

#include <ossim/imaging/ossimImageSource.h>
#include <ossim/base/ossimIpt.h>
#include <ossim/base/ossimConnectableObjectListener.h>
#include <ossim/base/ossimHistogramSource.h>
#include <ossim/base/ossimMultiResLevelHistogram.h>


class OSSIMDLLEXPORT ossimImageSourceSequencer
   :
      public ossimImageSource,
      public ossimConnectableObjectListener
{
public:
   ossimImageSourceSequencer(ossimImageSource* inputSource=NULL,
                             ossimObject* owner=NULL);

   virtual ~ossimImageSourceSequencer();
   ossim_int64 getNumberOfTiles()const;

   ossim_int64 getNumberOfTilesHorizontal()const;

   ossim_int64 getNumberOfTilesVertical()const;

   virtual void initialize();

   virtual void setAreaOfInterest(const ossimIrect& areaOfInterest);

   const ossimIrect& getAreaOfInterest()const;

   virtual void setToStartOfSequence();

   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& rect,
                                               ossim_uint32 resLevel=0);

   virtual ossimRefPtr<ossimImageData> getNextTile(ossim_uint32 resLevel=0);
   virtual bool getNextTileStream(std::ostream& bos);

   virtual bool getTileOrigin(ossim_int64 id, ossimIpt& origin)const;

   bool getTileRect(ossim_int64 tile_id, ossimIrect& rect) const;

   virtual ossimRefPtr<ossimImageData> getTile(ossim_int64 id,
                                               ossim_uint32 resLevel=0);

   virtual ossimIrect getBoundingRect(ossim_uint32 resLevel=0)const;
   virtual void getDecimationFactor(ossim_uint32 resLevel,
                                    ossimDpt& result) const;
   virtual void getDecimationFactors(vector<ossimDpt>& decimations) const;
   virtual ossim_uint32 getNumberOfDecimationLevels()const;
   
   virtual ossim_uint32 getNumberOfInputBands()const;   

   virtual ossimScalarType getOutputScalarType() const;
      
   virtual ossim_uint32 getTileWidth() const;
   virtual ossim_uint32 getTileHeight() const;
   
   virtual void slaveProcessTiles();
   virtual bool isMaster()const;

   virtual ossimIpt getTileSize()const;
   virtual void setTileSize(const ossimIpt& tileSize);
   virtual void setTileSize(ossim_int32 width, ossim_int32 height);
   
   virtual void connectInputEvent(ossimConnectionEvent& event);
   virtual void disconnectInputEvent(ossimConnectionEvent& event);
   
   virtual bool canConnectMyInputTo(ossim_int32 inputIndex,
                                    const ossimConnectableObject* object)const;
   
   virtual double getNullPixelValue(ossim_uint32 band=0)const;
   virtual double getMinPixelValue(ossim_uint32 band=0)const;
   virtual double getMaxPixelValue(ossim_uint32 band=0)const;

   void setCreateHistogram(bool create_histogram);
   bool loadState(const ossimKeywordlist& kwl, const char* prefix);

   void getBinInformation(ossim_uint32& numberOfBins,
                          ossim_float64& minValue,
                          ossim_float64& maxValue, ossimScalarType stype)const;
   
protected:
   ossimImageSource*  theInputConnection;
   ossimRefPtr<ossimImageData> theBlankTile;
   ossimRefPtr<ossimMultiResLevelHistogram> theHistogram;
   ossimIrect theAreaOfInterest;

   ossimIpt theTileSize;

   //---
   // These need to be big(64 bit) for high resolution tile servers. Made
   // signed for ease of going to/from ipt and irect which are both signed.
   //---
   ossim_int64 theNumberOfTilesHorizontal;
   ossim_int64 theNumberOfTilesVertical;
   ossim_int64 theCurrentTileNumber;
   bool theCreateHistogram;

   virtual void updateTileDimensions();

TYPE_DATA
};

#endif