ossimPngReaderFactory.h

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//---
//
// License: MIT
//
// Author:  David Burken
//
// Description: Factory for OSSIM Portable Network Graphics plugin (PNG)
// reader.
//---
// $Id$

#ifndef ossimPngReaderFactory_HEADER
#define ossimPngReaderFactory_HEADER 1

#include <ossim/imaging/ossimImageHandlerFactoryBase.h>

class ossimString;
class ossimFilename;
class ossimKeywordlist;

class ossimPngReaderFactory : public ossimImageHandlerFactoryBase
{
public:

   virtual ~ossimPngReaderFactory();

   static ossimPngReaderFactory* instance();

   virtual ossimImageHandler* open(const ossimFilename& fileName,
                                   bool openOverview=true) const;

   virtual ossimImageHandler* open(const ossimKeywordlist& kwl,
                                   const char* prefix=0)const;

   virtual ossimRefPtr<ossimImageHandler> open(
      std::shared_ptr<ossim::istream>& str,
      const ossimString& connectionString,
      bool openOverview ) const;
   
#if 0

   virtual ossimRefPtr<ossimImageHandler> open( std::istream* str,
                                                std::streamoff restartPosition,
                                                bool youOwnit ) const;   
#endif
   
   virtual ossimObject* createObject(const ossimString& typeName)const;
   
   virtual ossimObject* createObject(const ossimKeywordlist& kwl,
                                     const char* prefix=0)const;
   
   virtual void getTypeNameList(std::vector<ossimString>& typeList)const;

   virtual void getSupportedExtensions(
      ossimImageHandlerFactoryBase::UniqueStringList& extensionList)const;
  
   virtual void getImageHandlersBySuffix(ImageHandlerList& result,
                                         const ossimString& ext)const;
   virtual void getImageHandlersByMimeType(ImageHandlerList& result,
                                           const ossimString& mimeType)const;
protected:
   ossimPngReaderFactory();

   ossimPngReaderFactory(const ossimPngReaderFactory&);

   void operator=(const ossimPngReaderFactory&);

   static ossimPngReaderFactory* theInstance;

TYPE_DATA
};

#endif /* end of #ifndef ossimPngReaderFactory_HEADER */