ossimCcfTileSource.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 CcfTileSource.
//
// A ccf (Chip Chunk Format) is a double tiled format.  Image data is
// arranged in chips and chunks.  Each chip is 32 x 32 pixels.  Each chunk
// is 8 x 8 chips for a single band image.  Bands are interleaved by chip
// so a rgb image has a red chip a green chip, then a blue chip which
// would make the chunk 24 x 8 chips.
//
//*******************************************************************
//  $Id: ossimCcfTileSource.h 16075 2009-12-10 15:46:43Z gpotts $

#ifndef ossimCcfTileSource_HEADER
#define ossimCcfTileSource_HEADER

#include <fstream>

#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimCcfHead.h>

class  ossimImageData;

class OSSIM_DLL ossimCcfTileSource : public ossimImageHandler
{
public:

   ossimCcfTileSource();
   
   virtual ossimString getShortName()const;
   virtual ossimString getLongName()const;

   virtual bool open();
   
   virtual void close();
   
   virtual ossimRefPtr<ossimImageData> getTile(const  ossimIrect& 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 ossim_uint32 getNumberOfDecimationLevels() const;
   
   virtual ossimIrect getImageRectangle(
      ossim_uint32 reduced_res_level = 0) const;
   
   bool setOutputBandList(const vector<ossim_uint32>& outputBandList);

   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;

   virtual bool isOpen()const;

   virtual ossimRefPtr<ossimProperty> getProperty(
      const ossimString& name)const;
   
   virtual void getPropertyNames(std::vector<ossimString>& propertyNames)const;
    
   
protected:
   virtual ~ossimCcfTileSource();

   void initVerticesFromHeader();
   
   // Disallow these...
   ossimCcfTileSource(const ossimCcfTileSource& source);
   ossimCcfTileSource& operator=(const ossimCcfTileSource& source); 
   
   bool fillBuffer(const  ossimIrect& tile_rect,
                   const  ossimIrect& clip_rect,
                   const  ossimIrect& image_rect,
                   ossim_uint32 reduced_res_level,
                   ossimImageData* tile);

   bool fillUshortBuffer(const  ossimIrect& tile_rect,
                         const  ossimIrect& clip_rect,
                         const  ossimIrect& image_rect,
                         ossim_uint32 reduced_res_level,
                         ossimImageData* tile);
   
   bool fillUcharBuffer(const  ossimIrect& tile_rect,
                        const  ossimIrect& clip_rect,
                        const  ossimIrect& image_rect,
                        ossim_uint32 reduced_res_level,
                        ossimImageData* tile);

   void adjustToStartOfChunk(ossimIpt& pt) const;

   void adjustToStartOfChip(ossimIpt& pt) const;

   bool isEcgGeom(const ossimFilename& filename)const;

   ossimCcfHead                theCcfHead;
   ossimRefPtr<ossimImageData> theTile;
   ossim_uint8*                theChipBuffer;
   ifstream*                   theFileStr;
   vector<ossim_uint32>        theOutputBandList;
   ossim_int32                 theByteOrder;


TYPE_DATA
};
   
#endif