ossimGdalDataset.h

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//----------------------------------------------------------------------------
//
// License:  See top level LICENSE.txt file
//
// Author:  David Burken
//
// Description: A gdal data set from an ossim image handler.
//
//----------------------------------------------------------------------------
// $Id: ossimGdalDataset.h 15766 2009-10-20 12:37:09Z gpotts $
#ifndef ossimGdalDataset_HEADER
#define ossimGdalDataset_HEADER


#include <gdal_pam.h>
#include <cpl_string.h>
#include <ossim/base/ossimRefPtr.h>
#include <ossim/imaging/ossimImageHandler.h>

class ossimGdalDatasetRasterBand;
class ossimFilename;

class ossimGdalDataset : public GDALPamDataset
{
public:

   ossimGdalDataset();

   virtual ~ossimGdalDataset();

   bool open(const ossimFilename& file);

   static GDALDataset *Open( GDALOpenInfo * );

   void setImageHandler(ossimImageHandler* ih);

   const ossimImageHandler* getImageHandler() const;

   ossimImageHandler*       getImageHandler();

   void initGdalOverviewManager();

   void setGdalAcces(GDALAccess access);

private:
   
   void init();
   
   friend class ossimGdalDatasetRasterBand;

   ossimRefPtr<ossimImageHandler>  theImageHandler;
};

class ossimGdalDatasetRasterBand : public GDALPamRasterBand
{
   friend class ossimGdalDataset;
   
public:

   ossimGdalDatasetRasterBand( ossimGdalDataset* ds,
                               int band,
                               ossimImageHandler* ih);

   virtual ~ossimGdalDatasetRasterBand();

   virtual double GetNoDataValue( int *pbSuccess = 0 );
   
protected:

   virtual CPLErr IReadBlock(int nBlockXOff,
                             int nBlockYOff,
                             void* pImage);

private:
   ossimRefPtr<ossimImageHandler> theImageHandler;
};

#endif /* End of "#ifndef ossimGdalDataset_HEADER" */