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

/*

 * Copyright (c) 2006,2007 INRIA

 *

 * 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: Mathieu Lacage, <mathieu.lacage@sophia.inria.fr>

 */

#ifndef WIFI_CHANNEL_H

#define WIFI_CHANNEL_H

#include <vector>

#include <stdint.h>

#include "ns3/packet.h"

#include "ns3/channel.h"

#include "wifi-mode.h"

#include "wifi-preamble.h"

namespace ns3 {

class NetDevice;

class PropagationLossModel;

class PropagationDelayModel;

class WifiChannel : public Channel

{

public:

  typedef Callback<void,Packet,double,WifiMode,WifiPreamble> ReceiveCallback;

  WifiChannel ();

  virtual ~WifiChannel ();

  virtual uint32_t GetNDevices (void) const;

  virtual Ptr<NetDevice> GetDevice (uint32_t i) const ;

  void SetPropationLossModel (Ptr<PropagationLossModel> loss);

  void SetPropagationDelayModel (Ptr<PropagationDelayModel> delay);

  void Add (Ptr<NetDevice> device,  ReceiveCallback callback);

  void Send (Ptr<NetDevice> sender, const Packet &packet, double txPowerDbm,

             WifiMode wifiMode, WifiPreamble preamble) const;

private:

  typedef std::vector<std::pair<Ptr<NetDevice>, ReceiveCallback> > DeviceList;

  struct ReceiveData {

    ReceiveData (const Packet &packet, double rxPowerDbm,

                 WifiMode txMode, WifiPreamble preamble);

    Packet m_packet;

    double m_rxPowerDbm;

    WifiMode m_wifiMode;

    WifiPreamble m_preamble;

  };

  void Receive (uint32_t i, 

                const struct ReceiveData &data) const;

  DeviceList m_deviceList;

  Ptr<PropagationLossModel> m_loss;

  Ptr<PropagationDelayModel> m_delay;

};

} // namespace ns3

#endif /* WIFI_CHANNEL_H */