mipmediabuffer.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 MIPMEDIABUFFER_H

#define MIPMEDIABUFFER_H

#include "mipconfig.h"
#include "mipcomponent.h"
#include "miptime.h"
#include <list>

class MIPMediaMessage;

class EMIPLIB_IMPORTEXPORT MIPMediaBuffer : public MIPComponent
{
public:
        MIPMediaBuffer();
        ~MIPMediaBuffer();

        bool init(MIPTime interval);

        bool destroy();
        
        bool push(const MIPComponentChain &chain, int64_t iteration, MIPMessage *pMsg);
        bool pull(const MIPComponentChain &chain, int64_t iteration, MIPMessage **pMsg);
        bool processFeedback(const MIPComponentChain &chain, int64_t feedbackChainID, MIPFeedback *feedback);
private:
        void clearMessages();
        void clearBuffers();
        void buildOutputMessages();
        void insertInOutput(MIPMediaMessage *pMsg);

        bool m_init;
        std::list<MIPMediaMessage *> m_messages;
        std::list<MIPMediaMessage *> m_buffers;
        std::list<MIPMediaMessage *>::const_iterator m_msgIt;
        int64_t m_prevIteration;
        MIPTime m_interval, m_playbackTime;
        bool m_gotPlaybackTime;
};

#endif // MIPMEDIABUFFER_H