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

/*

 * Copyright (c) 2010 TELEMATICS LAB, DEE - Politecnico di Bari

 *

 * 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: Giuseppe Piro  <g.piro@poliba.it>

 *         Marco Miozzo <mmiozzo@cttc.es>

 */

#include <ns3/waveform-generator.h>

#include <ns3/object-factory.h>

#include <ns3/log.h>

#include <math.h>

#include <ns3/simulator.h>

#include "ns3/spectrum-error-model.h"

#include "lte-phy.h"

#include "lte-net-device.h"

NS_LOG_COMPONENT_DEFINE ("LtePhy");

namespace ns3 {

NS_OBJECT_ENSURE_REGISTERED (LtePhy);

LtePhy::LtePhy ()

{

  NS_LOG_FUNCTION (this);

  NS_FATAL_ERROR ("This constructor should not be called");

}

LtePhy::LtePhy (Ptr<LteSpectrumPhy> dlPhy, Ptr<LteSpectrumPhy> ulPhy)

  : m_downlinkSpectrumPhy (dlPhy),

    m_uplinkSpectrumPhy (ulPhy),

    m_tti (0.001),

    m_ulBandwidth (0),

    m_dlBandwidth (0),

    m_rbgSize (0),

    m_macChTtiDelay (1) // 1 TTI delay between MAC and CH

{

  NS_LOG_FUNCTION (this);

  for (int i = 0; i < m_macChTtiDelay; i++)

    {

      Ptr<PacketBurst> pb = CreateObject <PacketBurst> ();

      m_packetBurstQueue.push_back (pb);

    }

  for (int i = 0; i < m_macChTtiDelay; i++)

    {

      std::list<Ptr<IdealControlMessage> > l;

      m_controlMessagesQueue.push_back (l);

    }

}

TypeId

LtePhy::GetTypeId (void)

{

  static TypeId tid = TypeId ("ns3::LtePhy")

    .SetParent<Object> ()

  ;

  return tid;

}

LtePhy::~LtePhy ()

{

  NS_LOG_FUNCTION (this);

}

void

LtePhy::DoDispose ()

{

  NS_LOG_FUNCTION (this);

  m_packetBurstQueue.clear ();

  m_controlMessagesQueue.clear ();

  m_downlinkSpectrumPhy->Dispose ();

  m_downlinkSpectrumPhy = 0;

  m_uplinkSpectrumPhy->Dispose ();

  m_uplinkSpectrumPhy = 0;

  m_netDevice = 0;

  Object::DoDispose ();

}

void

LtePhy::SetDevice (Ptr<LteNetDevice> d)

{

  NS_LOG_FUNCTION (this << d);

  m_netDevice = d;

}

Ptr<LteNetDevice>

LtePhy::GetDevice ()

{

  NS_LOG_FUNCTION (this);

  return m_netDevice;

}

Ptr<LteSpectrumPhy> 

LtePhy::GetDownlinkSpectrumPhy ()

{

  return m_downlinkSpectrumPhy;

}

Ptr<LteSpectrumPhy> 

LtePhy::GetUplinkSpectrumPhy ()

{

  return m_uplinkSpectrumPhy;

}

void

LtePhy::SetDownlinkChannel (Ptr<SpectrumChannel> c)

{

  NS_LOG_FUNCTION (this << c);

  m_downlinkSpectrumPhy->SetChannel (c);

}

void

LtePhy::SetUplinkChannel (Ptr<SpectrumChannel> c)

{

  NS_LOG_FUNCTION (this << c);

  m_uplinkSpectrumPhy->SetChannel (c);

}

void

LtePhy::SetDownlinkSubChannels (std::vector<int> mask )

{

  NS_LOG_FUNCTION (this);

  m_listOfDownlinkSubchannel = mask;

  DoSetDownlinkSubChannels ();

}

void

LtePhy::DoSetDownlinkSubChannels ()

{

  NS_LOG_FUNCTION (this);

}

void

LtePhy::SetUplinkSubChannels (std::vector<int> mask )

{

  NS_LOG_FUNCTION (this);

  m_listOfUplinkSubchannel = mask;

  DoSetUplinkSubChannels ();

}

void

LtePhy::DoSetUplinkSubChannels ()

{

  NS_LOG_FUNCTION (this);

}

std::vector<int>

LtePhy::GetDownlinkSubChannels (void)

{

  NS_LOG_FUNCTION (this);

  return m_listOfDownlinkSubchannel;

}

std::vector<int>

LtePhy::GetUplinkSubChannels (void)

{

  NS_LOG_FUNCTION (this);

  return m_listOfUplinkSubchannel;

}

void

LtePhy::SetTti (double tti)

{

  NS_LOG_FUNCTION (this << tti);

  m_tti = tti;

}

double

LtePhy::GetTti (void) const

{

  NS_LOG_FUNCTION (this << m_tti);

  return m_tti;

}

void

LtePhy::DoSetBandwidth (uint8_t ulBandwidth, uint8_t dlBandwidth)

{

  m_ulBandwidth = ulBandwidth;

  m_dlBandwidth = dlBandwidth;

  int Type0AllocationRbg[4] = {

    10,     // RGB size 1

    26,     // RGB size 2

    63,     // RGB size 3

    110     // RGB size 4

  };  // see table 7.1.6.1-1 of 36.213

  for (int i = 0; i < 4; i++)

    {

      if (dlBandwidth < Type0AllocationRbg[i])

        {

          m_rbgSize = i + 1;

          break;

        }

    }

}

void 

LtePhy::DoSetEarfcn (uint16_t dlEarfcn, uint16_t ulEarfcn)

{

  m_dlEarfcn = dlEarfcn;

  m_ulEarfcn = ulEarfcn;

}

uint8_t

LtePhy::GetRbgSize (void) const

{

  return m_rbgSize;

}

void

LtePhy::SetMacChDelay (uint8_t delay)

{

  m_macChTtiDelay = delay;

  m_packetBurstQueue.resize (delay);

}

uint8_t

LtePhy::GetMacChDelay (void)

{

  return (m_macChTtiDelay);

}

void

LtePhy::SetMacPdu (Ptr<Packet> p)

{

  m_packetBurstQueue.at (m_macChTtiDelay - 1)->AddPacket (p);

}

Ptr<PacketBurst>

LtePhy::GetPacketBurst (void)

{

  if (m_packetBurstQueue.at (0)->GetSize () > 0)

    {

      Ptr<PacketBurst> ret = m_packetBurstQueue.at (0)->Copy ();

      m_packetBurstQueue.erase (m_packetBurstQueue.begin ());

      m_packetBurstQueue.push_back (CreateObject <PacketBurst> ());

      return (ret);

    }

  else

    {

      m_packetBurstQueue.erase (m_packetBurstQueue.begin ());

      m_packetBurstQueue.push_back (CreateObject <PacketBurst> ());

      return (0);

    }

}

void

LtePhy::SetControlMessages (Ptr<IdealControlMessage> m)

{

  m_controlMessagesQueue.at (m_macChTtiDelay - 1).push_back (m);

}

std::list<Ptr<IdealControlMessage> >

LtePhy::GetControlMessages (void)

{

  if (m_controlMessagesQueue.at (0).size () > 0)

    {

      std::list<Ptr<IdealControlMessage> > ret = m_controlMessagesQueue.at (0);

      m_controlMessagesQueue.erase (m_controlMessagesQueue.begin ());

      std::list<Ptr<IdealControlMessage> > newlist;

      m_controlMessagesQueue.push_back (newlist);

      return (ret);

    }

  else

    {

      m_controlMessagesQueue.erase (m_controlMessagesQueue.begin ());

      std::list<Ptr<IdealControlMessage> > newlist;

      m_controlMessagesQueue.push_back (newlist);

      std::list<Ptr<IdealControlMessage> > emptylist;

      return (emptylist);

    }

}

void

LtePhy::DoSetCellId (uint16_t cellId)

{

  m_cellId = cellId;

  m_downlinkSpectrumPhy->SetCellId (cellId);

  m_uplinkSpectrumPhy->SetCellId (cellId);

}

} // namespace ns3