/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2009 MIRKO BANCHI

 *

 * 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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mirko Banchi <mk.banchi@gmail.com>

 */

#ifndef MSDU_AGGREGATOR_H

#define MSDU_AGGREGATOR_H

#include "ns3/ptr.h"

#include "ns3/packet.h"

#include "ns3/object.h"

#include "amsdu-subframe-header.h"

#include <list>

namespace ns3 {

class WifiMacHeader;

/**

 * \brief Abstract class that concrete msdu aggregators have to implement

 */

class MsduAggregator : public Object

{

public:

  typedef std::list<std::pair<Ptr<Packet>, AmsduSubframeHeader> > DeaggregatedMsdus;

  static TypeId GetTypeId (void);

  /* Adds <i>packet</i> to <i>aggregatedPacket</i>. In concrete aggregator's implementation is 

   * specified how and if <i>packet</i> can be added to <i>aggregatedPacket</i>. If <i>packet</i>

   * can be added returns true, false otherwise.

   */

  virtual bool Aggregate (Ptr<const Packet> packet, Ptr<Packet> aggregatedPacket,

                          Mac48Address src, Mac48Address dest) = 0;

  static DeaggregatedMsdus Deaggregate (Ptr<Packet> aggregatedPacket);

};

}  //namespace ns3

#endif /* MSDU_AGGREGATOR_H */