lumiera_/src/proc/mobject/mobject.hpp

/*
  MOBJECT.hpp  -  Key Abstraction: A Media Object in the Session
 
  Copyright (C)         CinelerraCV
    2007,               Christian Thaeter <ct@pipapo.org>
 
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.
 
  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 for more details.
 
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
*/


#ifndef MOBJECT_MOBJECT_H
#define MOBJECT_MOBJECT_H

#include <list>
#include <tr1/memory>

#include "cinelerra.h"
#include "proc/mobject/buildable.hpp"
#include "proc/asset.hpp"                 // TODO finally not needed?


using std::list;
using std::tr1::shared_ptr;

#include "proc/assetmanager.hpp"                
using proc_interface::IDA;                // TODO finally not needed?
using proc_interface::PAsset;              //TODO: only temporarily
using proc_interface::AssetManager;

namespace mobject
  {

  class Placement;


  /**
   * MObject is the interface class for all "Media Objects".
   * All the contents and elements that can be placed and 
   * manipulated and finally rendered within Cinelerra's EDL 
   * are MObjects.
   */
  class MObject : public Buildable
    {
    protected:
      typedef cinelerra::Time Time;

      // TODO: how to represent time intervals best?
      Time length;
      
      virtual ~MObject() {};
      
    public:
      virtual shared_ptr<Placement>& getPlacement () =0;
      virtual PAsset getMedia () =0; ///< @todo solve the reference/Interface problem concerning Placements, then push down
      virtual Time& getLength() =0; ///< @todo how to deal with the time/length field??

    };
  
  
  typedef shared_ptr<MObject> PMO;



} // namespace mobject
#endif