ossimEpsgProjectionDatabase.h

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//*************************************************************************************************
//                          OSSIM -- Open Source Software Image Map
//
// License:  See top level LICENSE.txt file.
//
// Author: Oscar Kramer
//
//*************************************************************************************************
//  $Id: ossimEpsgProjectionDatabase.h 22924 2014-10-27 16:32:58Z okramer $

#ifndef ossimEpsgProjectionDatabase_HEADER
#define ossimEpsgProjectionDatabase_HEADER 1

#include <ossim/projection/ossimProjectionFactoryBase.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/projection/ossimMapProjection.h>
#include <fstream>
#include <mutex>

class ossimProjection;
class ossimString;
class ossimEpsgProjectionFactory;
class ossimUtmProjection;

//*************************************************************************************************
//*************************************************************************************************
class OSSIMDLLEXPORT ossimEpsgProjectionDatabase : public ossimReferenced
{
   friend class ossimEpsgProjectionFactory;

public:
   static ossimEpsgProjectionDatabase* instance();

   virtual ~ossimEpsgProjectionDatabase();

   ossimProjection* findProjection(const ossimString& proj_spec) const;

   ossimProjection* findProjection(ossim_uint32 epsg_code) const;

   ossim_uint32 findProjectionCode(const ossimString& projection_name) const;

   ossim_uint32 findProjectionCode(const ossimMapProjection& lost_proj) const;

   ossimString findProjectionName(ossim_uint32 epsg_code) const;

   void getProjectionsList(std::vector<ossimString>& typeList) const;

   size_t numRecords() const { return m_projDatabase.size(); }

   ossim_uint32 getCodeFromUtmProj(const ossimUtmProjection* proj) const;

protected:
   enum RecordFormat
   {  
      NOT_ASSIGNED=0,
      FORMAT_A,
      FORMAT_B,
      FORMAT_C,
      CUSTOM
   };

   class ProjDbRecord : public ossimReferenced
   {
   public:
      ProjDbRecord() : 
            code(0), 
            name(""), 
            datumValid(false), 
            csvFormat(NOT_ASSIGNED), 
            proj(0) {}

      ossim_uint32     code;
      ossimString      name;
      bool             datumValid; 
      RecordFormat     csvFormat;
      std::vector<ossimString>        csvRecord;
      ossimRefPtr<ossimMapProjection> proj;
   };

   ossimEpsgProjectionDatabase();

   ossimMapProjection* createProjFromFormatARecord(ProjDbRecord* record) const;

   ossimMapProjection* createProjFromFormatBRecord(ProjDbRecord* record) const;

   ossimMapProjection* createProjFromUtmCode(ossim_uint32 code) const;

   void initialize() const;

   mutable std::multimap<ossim_uint32, ossimRefPtr<ProjDbRecord> > m_projDatabase;
   mutable std::mutex m_mutex;
   //static ossimEpsgProjectionDatabase*  m_instance; //!< Singleton implementation
   
};

#endif