ossimGeneralRasterTileSource.h

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//*******************************************************************
//
// License: MIT
//
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  David Burken
//
// Description:
//
// Contains class declaration for ossimGeneralRasterTileSource.
// ossimGeneralRasterTileSource is derived from ImageHandler which is
// derived from ossimTileSource.
//*******************************************************************
//  $Id: ossimGeneralRasterTileSource.h 21631 2012-09-06 18:10:55Z dburken $

#ifndef ossimGeneralRasterTileSource_HEADER
#define ossimGeneralRasterTileSource_HEADER 1


#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/base/ossimIoStream.h>
#include <ossim/imaging/ossimGeneralRasterInfo.h>
#include <memory>
#include <vector>

class  ossimImageData;

class OSSIM_DLL ossimGeneralRasterTileSource : public ossimImageHandler
{
public:

   ossimGeneralRasterTileSource();

   virtual ossimString getShortName()const;
   virtual ossimString getLongName()const;
   
   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& tile_rect,
                                               ossim_uint32 resLevel=0);

   virtual bool getTile(ossimImageData* result, ossim_uint32 resLevel=0);   
   
   virtual ossim_uint32 getNumberOfInputBands() const;
   
   virtual ossim_uint32 getNumberOfOutputBands() const;
   
   virtual ossim_uint32 getNumberOfLines(ossim_uint32 reduced_res_level = 0) const;
   
   virtual ossim_uint32 getNumberOfSamples(ossim_uint32 reduced_res_level = 0) const;

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

   virtual ossim_uint32    getTileWidth() const;
   
   virtual ossim_uint32    getTileHeight() const;

   virtual ossim_uint32 getImageTileWidth() const;

   virtual ossim_uint32 getImageTileHeight() const;   
   
   bool isValidRLevel(ossim_uint32 reduced_res_level) const;
   
   virtual void close();
   virtual bool isOpen() const;
   virtual bool open();
   virtual bool open(const ossimGeneralRasterInfo& info);
   
   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 ossimRefPtr<ossimImageGeometry> getImageGeometry();

   virtual bool isBandSelector() const;

   virtual bool setOutputBandList(const std::vector<ossim_uint32>& band_list);

   virtual void getOutputBandList(std::vector<ossim_uint32>& bandList) const;

protected:
   virtual ~ossimGeneralRasterTileSource();
   virtual bool fillBuffer(const ossimIpt& origin, const ossimIpt& size);
   virtual bool fillBIP(const ossimIpt& origin, const ossimIpt& size);
   virtual bool fillBIL(const ossimIpt& origin, const ossimIpt& size);
   virtual bool fillBSQ(const ossimIpt& origin, const ossimIpt& size);
   virtual bool fillBsqMultiFile(const ossimIpt& origin, const ossimIpt& size);

   virtual ossimKeywordlist getHdrInfo(ossimFilename hdrFile);
   virtual ossimKeywordlist getXmlInfo(ossimFilename xmlFile);

   bool initializeHandler();
   
   ossimRefPtr<ossimImageData>              m_tile;
   ossim_uint8*                             m_buffer;
   ossim_uint8*                             m_lineBuffer;
   ossimInterleaveType                      m_bufferInterleave;
   std::vector< std::shared_ptr<ossim::istream> > m_fileStrList;
   // std::vector< std::ifstream* >            m_fileStrList;   
   ossimGeneralRasterInfo                   m_rasterInfo;
   ossimIrect                               m_bufferRect;
   bool                                     m_swapBytesFlag;
   ossim_uint32                             m_bufferSizeInPixels;
   std::vector<ossim_uint32>                m_outputBandList;

private:
   
   void allocateTile();

   void allocateBuffer( const ossimImageData* tile );
   

TYPE_DATA
};

#endif /* #ifndef ossimGeneralRasterTileSource_HEADER */