miprtpvideodecoder.h

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/*
    
  This file is a part of EMIPLIB, the EDM Media over IP Library.
  
  Copyright (C) 2006-2011  Hasselt University - Expertise Centre for
                      Digital Media (EDM) (http://www.edm.uhasselt.be)

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  
  USA

*/

#ifndef MIPRTPVIDEODECODER_H

#define MIPRTPVIDEODECODER_H

#include "mipconfig.h"
#include "miprtppacketdecoder.h"
#include "miprtppacketgrouper.h"
#include "miptime.h"
#if defined(WIN32) || defined(_WIN32_WCE)
        #include <hash_map>
#else
        #include <ext/hash_map>
#endif // Win32

class EMIPLIB_IMPORTEXPORT MIPRTPVideoDecoder : public MIPRTPPacketDecoder
{
public:
        MIPRTPVideoDecoder();
        ~MIPRTPVideoDecoder();
private:
        bool validatePacket(const jrtplib::RTPPacket *pRTPPack, real_t &timestampUnit, real_t timestampUnitEstimate);
        void createNewMessages(const jrtplib::RTPPacket *pRTPPack, std::list<MIPMediaMessage *> &messages, std::list<uint32_t> &timestamps);

        void expireGroupers();

        class PacketGrouper
        {
        public:
                PacketGrouper(MIPRTPPacketGrouper *pPacketGrouper)
                {
                        m_pGrouper = pPacketGrouper;
                        m_lastAccesstime = MIPTime::getCurrentTime();
                }

                ~PacketGrouper()
                {
                        delete m_pGrouper;
                }

                MIPRTPPacketGrouper *getGrouper()
                {
                        m_lastAccesstime = MIPTime::getCurrentTime();
                        return m_pGrouper;
                }

                MIPTime getLastAccessTime() const
                {
                        return m_lastAccesstime;
                }
        private:
                MIPTime m_lastAccesstime;
                MIPRTPPacketGrouper *m_pGrouper;
        };

#if defined(WIN32) || defined(_WIN32_WCE)
        stdext::hash_map<uint32_t, PacketGrouper *> m_packetGroupers;
#else
        __gnu_cxx::hash_map<uint32_t, PacketGrouper * > m_packetGroupers;
#endif // Win32
        MIPTime m_lastCheckTime;
};

#endif // MIPRTPVIDEODECODER_H