/* -*-  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>

 */

#include "qos-wifi-mac-helper.h"

#include "ns3/msdu-aggregator.h"

#include "ns3/wifi-mac.h"

#include "ns3/edca-txop-n.h"

#include "ns3/pointer.h"

#include "ns3/uinteger.h"

namespace ns3 {

QosWifiMacHelper::QosWifiMacHelper ()

{

  m_aggregators.insert (std::make_pair (AC_VO, ObjectFactory ()));

  m_aggregators.insert (std::make_pair (AC_VI, ObjectFactory ()));

  m_aggregators.insert (std::make_pair (AC_BE, ObjectFactory ()));

  m_aggregators.insert (std::make_pair (AC_BK, ObjectFactory ()));

  m_queues.insert (std::make_pair (AC_VO, ObjectFactory ()));

  m_queues.insert (std::make_pair (AC_VI, ObjectFactory ()));

  m_queues.insert (std::make_pair (AC_BE, ObjectFactory ()));

  m_queues.insert (std::make_pair (AC_BK, ObjectFactory ()));

  m_queues[AC_VO].SetTypeId ("ns3::EdcaTxopN");

  m_queues[AC_VI].SetTypeId ("ns3::EdcaTxopN");

  m_queues[AC_BE].SetTypeId ("ns3::EdcaTxopN");

  m_queues[AC_BK].SetTypeId ("ns3::EdcaTxopN");

}

QosWifiMacHelper::~QosWifiMacHelper ()

{}

QosWifiMacHelper

QosWifiMacHelper::Default (void)

{

  QosWifiMacHelper helper;

  helper.SetType ("ns3::QstaWifiMac");

  /* For more details about this default parameters see IEE802.11 section 7.3.2.29 */

  helper.SetEdcaParametersForAc (AC_VO,"MinCw", UintegerValue (3),

                                       "MaxCw", UintegerValue (7),

                                       "Aifsn", UintegerValue (2));

  helper.SetEdcaParametersForAc (AC_VI,"MinCw", UintegerValue (7),

                                       "MaxCw", UintegerValue (15),

                                       "Aifsn", UintegerValue (2));

  helper.SetEdcaParametersForAc (AC_BE,"MinCw", UintegerValue (15),

                                       "MaxCw", UintegerValue (1023),

                                       "Aifsn", UintegerValue (3));

  helper.SetEdcaParametersForAc (AC_BK,"MinCw", UintegerValue (15),

                                       "MaxCw", UintegerValue (1023),

                                       "Aifsn", UintegerValue (7));

  return helper;

}

void

QosWifiMacHelper::SetType (std::string type,

                           std::string n0, const AttributeValue &v0,

                           std::string n1, const AttributeValue &v1,

                           std::string n2, const AttributeValue &v2,

                           std::string n3, const AttributeValue &v3,

                           std::string n4, const AttributeValue &v4,

                           std::string n5, const AttributeValue &v5,

                           std::string n6, const AttributeValue &v6,

                           std::string n7, const AttributeValue &v7)

{

  m_mac.SetTypeId (type);

  m_mac.Set (n0, v0);

  m_mac.Set (n1, v1);

  m_mac.Set (n2, v2);

  m_mac.Set (n3, v3);

  m_mac.Set (n4, v4);

  m_mac.Set (n5, v5);

  m_mac.Set (n6, v6);

  m_mac.Set (n7, v7);

}

void

QosWifiMacHelper::SetMsduAggregatorForAc (AccessClass accessClass, std::string type,

                                          std::string n0, const AttributeValue &v0,

                                          std::string n1, const AttributeValue &v1,

                                          std::string n2, const AttributeValue &v2,

                                          std::string n3, const AttributeValue &v3)

{

  std::map<AccessClass, ObjectFactory>::iterator it;

  it = m_aggregators.find (accessClass);

  if (it != m_aggregators.end ())

    {

      it->second.SetTypeId (type);

      it->second.Set (n0, v0);

      it->second.Set (n1, v1);

      it->second.Set (n2, v2);

      it->second.Set (n3, v3);

    }

}

void

QosWifiMacHelper::SetEdcaParametersForAc (AccessClass accessClass,

                                          std::string n0, const AttributeValue &v0,

                                          std::string n1, const AttributeValue &v1,

                                          std::string n2, const AttributeValue &v2,

                                          std::string n3, const AttributeValue &v3)

{

  std::map<AccessClass, ObjectFactory>::iterator it;

  it = m_queues.find (accessClass);

  if (it != m_queues.end ())

    {

      it->second.Set (n0, v0);

      it->second.Set (n1, v1);

      it->second.Set (n2, v2);

      it->second.Set (n3, v3);

    }

}

Ptr<WifiMac>

QosWifiMacHelper::Create (void) const

{

  Ptr<WifiMac> mac = m_mac.Create<WifiMac> ();

  Ptr<EdcaTxopN> edcaQueue;

  Ptr<MsduAggregator> aggregator;

  std::map<AccessClass, ObjectFactory>::const_iterator itQueue;

  std::map<AccessClass, ObjectFactory>::const_iterator itAggr;

  /* Setting for VO queue */

  itQueue = m_queues.find (AC_VO);

  itAggr = m_aggregators.find (AC_VO);

  edcaQueue = itQueue->second.Create<EdcaTxopN> ();

  if (itAggr->second.GetTypeId ().GetUid () != 0)

    {

      aggregator = itAggr->second.Create<MsduAggregator> ();

      edcaQueue->SetMsduAggregator (aggregator);

    }

  mac->SetAttribute ("VO_EdcaTxopN", PointerValue (edcaQueue));

  /* Setting for VI queue */

  itQueue = m_queues.find (AC_VI);

  itAggr = m_aggregators.find (AC_VI);

  edcaQueue = itQueue->second.Create<EdcaTxopN> ();

  if (itAggr->second.GetTypeId ().GetUid () != 0)

    {

      aggregator = itAggr->second.Create<MsduAggregator> ();

      edcaQueue->SetMsduAggregator (aggregator);

    }

  mac->SetAttribute ("VI_EdcaTxopN", PointerValue (edcaQueue));

  /* Setting for BE queue */

  itQueue = m_queues.find (AC_BE);

  itAggr = m_aggregators.find (AC_BE);

  edcaQueue = itQueue->second.Create<EdcaTxopN> ();

  if (itAggr->second.GetTypeId ().GetUid () != 0)

    {

      aggregator = itAggr->second.Create<MsduAggregator> ();

      edcaQueue->SetMsduAggregator (aggregator);

    }

  mac->SetAttribute ("BE_EdcaTxopN", PointerValue (edcaQueue));

  /* Setting for BK queue */

  itQueue = m_queues.find (AC_BK);

  itAggr = m_aggregators.find (AC_BK);

  edcaQueue = itQueue->second.Create<EdcaTxopN> ();

  if (itAggr->second.GetTypeId ().GetUid () != 0)

    {

      aggregator = itAggr->second.Create<MsduAggregator> ();

      edcaQueue->SetMsduAggregator (aggregator);

    }

  mac->SetAttribute ("BK_EdcaTxopN", PointerValue (edcaQueue));

  return mac;

}

} //namespace ns3