ossimImageHandlerMtAdaptor.h

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//**************************************************************************************************
//                          OSSIM -- Open Source Software Image Map
//
// LICENSE: See top level LICENSE.txt file.
//
// AUTHOR: Oscar Kramer
//
//**************************************************************************************************
//  $Id$
#ifndef ossimImageHandlerMtAdaptor_HEADER
#define ossimImageHandlerMtAdaptor_HEADER 1

#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimCacheTileSource.h>
#include <mutex>
//**************************************************************************************************
//**************************************************************************************************
class OSSIMDLLEXPORT ossimImageHandlerMtAdaptor : public ossimImageHandler
{
public:
   static const char* ADAPTEE_ID_KW;

   ossimImageHandlerMtAdaptor(ossimImageHandler* adaptee = 0, bool use_cache=false, ossim_uint32 cache_tile_size=64);

   void setAdaptee(ossimImageHandler* handler);

   virtual bool canConnectMyInputTo(ossim_int32 i, const ossimConnectableObject* obj) const;

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

   virtual bool getTile(ossimImageData* result, ossim_uint32 resLevel=0);
   
   virtual bool saveState(ossimKeywordlist& kwl, const char* prefix=0)const;

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

   // The following are virtuals in the base class. Implemented here as pass-through to adaptee
   virtual ossim_uint32    getNumberOfInputBands() const;
   virtual bool            isOpen() const;
   virtual bool            open();
   virtual ossim_uint32    getNumberOfLines(ossim_uint32 resLevel = 0) const;
   virtual ossim_uint32    getNumberOfSamples(ossim_uint32 resLevel = 0) const;
   virtual ossim_uint32    getImageTileWidth() const;
   virtual ossim_uint32    getImageTileHeight() const;
   virtual ossimString     getLongName()  const;
   virtual ossimString     getShortName() const;
   virtual void            close();
   virtual ossim_uint32    getNumberOfOutputBands() const;
   virtual ossim_uint32    getNumberOfDecimationLevels() const;
   virtual ossimScalarType getOutputScalarType() const;
   virtual ossim_uint32    getTileWidth() const;
   virtual ossim_uint32    getTileHeight() const;
   virtual ossim_float64   getMinPixelValue(ossim_uint32 band=0)const;
   virtual ossim_float64   getMaxPixelValue(ossim_uint32 band=0)const;
   virtual ossim_float64   getNullPixelValue(ossim_uint32 band=0)const;
   void setCacheTileSize(ossim_uint32 cache_tile_size);
   void setUseCache(bool use_cache);
   void writeTime() const;

   double       d_getTileT;
   ossim_uint32 d_cacheTileSize;

protected:
   virtual ~ossimImageHandlerMtAdaptor();

   ossimRefPtr<ossimImageHandler>    m_adaptedHandler;
   ossimRefPtr<ossimCacheTileSource> m_cache;
   mutable std::mutex                m_mutex;   

   bool                        d_useCache;
   bool                        d_useFauxTile;
   ossimRefPtr<ossimImageData> d_fauxTile;
   friend class ossimMtDebug;

TYPE_DATA
};

#endif