SectionFilter.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

This program 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 General Public License version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef SECTIONFILTER_H_
#define SECTIONFILTER_H_

extern "C" {
    #include <sys/stat.h>
    #include <stdio.h>
    #include <stdio.h>
}

#include "util/functions.h"
using namespace ::br::pucrio::telemidia::util;

#include "system/thread/Thread.h"
using namespace ::br::pucrio::telemidia::ginga::core::system::thread;

#include "tsparser/IDemuxer.h"
#include "tsparser/ITSPacket.h"
#include "tsparser/ITransportSection.h"
#include "tsparser/IFilterListener.h"
using namespace ::br::pucrio::telemidia::ginga::core::tsparser;

#include <string>
#include <map>
#include <set>
#include <iostream>
using namespace std;

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace dataprocessing {
    struct SectionHandler {
        // Last section's packet continuityCounter.
        int lastContinuityCounter;
        char sectionHeader[8];
        unsigned int headerSize;
        int recvPack;
        ITransportSection* section;
    };

    class SectionFilter : public ITSFilter {
        private:
            map<unsigned int, SectionHandler*> sectionPidSelector;

            IFilterListener* listener;
            set<string> processedSections;

            int lastPid;
            map<int, ITransportSection*> hFilteredSections;
            pthread_mutex_t stlMutex;

        public:
            SectionFilter();
            virtual ~SectionFilter();

            void addPid(int pid){};

        private:
            string setDestinationUri(string dstUri){return dstUri;};
            void setSourceUri(string srcUri, bool isPipe){};

            void resetHandler(SectionHandler* handler);
            void ignore(unsigned int pid);
            SectionHandler* getSectionHandler(unsigned int pid);
            void process(ITransportSection* section, unsigned int pid);
            void verifyAndAddData(ITSPacket* pack, bool lastPacket);
            bool verifyAndCreateSection(ITSPacket* pack);
            bool setSectionParameters(ITSPacket* pack);

        public:
            void setListener(IFilterListener* listener);
            bool checkProcessedSections(string sectionName);
            void addProcessedSection(string sectionName);
            void removeProcessedSection(string sectionName);
            void clearProcessedSections();
            bool checkSectionVersion(ITransportSection* section);
            void receiveTSPacket(ITSPacket* pack);
            void receiveSection(char* buf, int len, IFrontendFilter* filter);
            void receivePes(char* buf, int len, IFrontendFilter* filter);
    };
}
}
}
}
}
}

#endif /*SECTIONFILTER_H_*/