lgrPacketIndexer.h

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/******************************************************************************
** Copyright (c) 1992-2010 VT MAK
** All rights reserved.
******************************************************************************/


#ifndef lgrPacketIndexer_H_
#define lgrPacketIndexer_H_

#include "lgrCore.h"
#include "filePosition.h"

#include <vector>
#include <vlutil/vlNetTypes.h>

namespace MAKLogger
{
   class DtPacket;

   class DT_DLL_LGRCORE DtLgrPacketIndexer
   {
   public:
      DtLgrPacketIndexer();

      ~DtLgrPacketIndexer();

      private:
         DtLgrPacketIndexer(const DtLgrPacketIndexer&);
         DtLgrPacketIndexer& operator=(const DtLgrPacketIndexer&);
      public:

      int addEntry(double time,DtFilePosition position,int size);

      void removeEntry(int index);

      void clearEntries();

      int firstIndex();

      int lastIndex();

      int indexCount() const;

      int getIndexAtOrBeforeTime(double time);

      int getIndexAtOrAfterTime(double time);

      DtFilePosition getPositionOfIndex(int index);

      double getTimeOfIndex(int index);

      int getSizeOfIndex(int index);

      DtPacket* encodePacket() const;

      void decodePacket(const DtPacket* packet);

   protected:

      struct IndexEntry
      {
         double time;
         DtFilePosition filePosition;
         DtU32 packetSize;
      };

      struct NetIndexEntry
      {
         DtNetFloat64 time;
         DtNetU64     filePosition;
         DtNetU32     packetSize;
      };

      struct NetIndexTable
      {
         DtNetU32 numEntries;
         DtNetU32 unused;
      };

      typedef std::vector<IndexEntry> CheckpointEntryList;
      CheckpointEntryList myCheckpointEntries;
   };
}

#endif