ossimMrSidReader.h

Go to the documentation of this file.

//----------------------------------------------------------------------------
//
// License:  LGPL
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Description:  Class declaration MrSID reader.
//
// Specification: ISO/IEC 15444
//
//----------------------------------------------------------------------------
// $Id: ossimMrSidReader.h 2645 2011-05-26 15:21:34Z oscar.kramer $

#ifndef ossimMrSidReader_HEADER
#define ossimMrSidReader_HEADER 1

#include <iosfwd>
#include <fstream>
#include <vector>
#include <ossim/plugin/ossimPluginConstants.h>
#include <ossim/base/ossimIpt.h>
#include <ossim/base/ossimIrect.h>
#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/support_data/ossimJ2kSizRecord.h>
#include <ossim/imaging/ossimAppFixedTileCache.h>

//LizardTech Includes
#include <MrSIDImageReader.h>
#include <lti_navigator.h>
#include <lti_metadataTypes.h>

LT_USE_NAMESPACE(LizardTech);

// Forward class declarations.
class ossimImageData;
class ossimDpt;

class OSSIM_PLUGINS_DLL ossimMrSidReader : public ossimImageHandler
{
public:

   ossimMrSidReader();
   
   virtual ~ossimMrSidReader();

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

   virtual ossimString getClassName() const;

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

   virtual ossim_uint32 getNumberOfInputBands() const;

   virtual ossim_uint32 getNumberOfOutputBands()const; 
   virtual ossim_uint32 getImageTileWidth() const;

   virtual ossim_uint32 getImageTileHeight() const;

   virtual ossimScalarType getOutputScalarType() 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 getNumberOfLines(ossim_uint32 resLevel = 0) const;

   virtual ossim_uint32 getNumberOfSamples(ossim_uint32 resLevel = 0) const;

   virtual bool open();

   virtual bool isOpen()const;

   virtual void closeEntry();

   virtual ossimRefPtr<ossimImageGeometry> getImageGeometry();

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

protected:

   virtual ossimRefPtr<ossimImageGeometry> getExternalImageGeometry() const;
   
   virtual ossimRefPtr<ossimImageGeometry> getInternalImageGeometry() const;
  
   
private:

  bool computeDecimationFactors(std::vector<ossimDpt>& decimations) const;

  bool getImageDimensions(std::vector<ossimIrect>& tileDims) const;

  ossimProjection* getGeoProjection();

  void getDataType();

  void computeMinMax();

  bool getMetadataElement(LTIMetadataDatabase metaDb, const char* tagName, void *pValue, int iLength=0);
   
  MrSIDImageReader*            theReader;
  LTINavigator*                theImageNavigator;

  ossim_uint32                 theMinDwtLevels;
  ossimIrect                   theImageRect; 
  std::vector<ossimIrect>      theMrSidDims;
  
  ossim_uint32                 theNumberOfBands;
  ossimScalarType              theScalarType;
  ossimRefPtr<ossimImageData>  theTile;
TYPE_DATA
};

#endif /* #ifndef ossimMrSidReader_HEADER */