packet.cpp

来自「RFID reader 语 tag 模拟器」· C++ 代码 · 共 118 行

 #include "packet.hpp"

 const t_uint Packet::m_DEFAULT_SIZE_IN_BYTES = 512;
 const double Packet::m_DEFAULT_DATA_RATE = 1e6;
 const t_uint Packet::m_DEFAULT_DESTINATION = 0;

 t_ulong Packet::m_nextUniqueId = 1;

 Packet::Packet()
    : m_dataRate(m_DEFAULT_DATA_RATE),
    m_txPower(0.0), m_doMaxTxPower(false), m_hasError(false),
    m_destination(m_DEFAULT_DESTINATION), m_uniqueId(0)
 {

 }

 Packet::~Packet()
 {

 }

 Packet::Packet(const Packet& rhs)
    : m_dataRate(rhs.m_dataRate), m_txPower(rhs.m_txPower),
    m_hasError(rhs.m_hasError),
    m_destination(rhs.m_destination), m_uniqueId(rhs.m_uniqueId)
 {
    // Create a deep copy of the packet's data
    if(rhs.m_data.begin() != rhs.m_data.end()) {
       DataTypeMap::const_iterator p;
       for(p = rhs.m_data.begin(); p != rhs.m_data.end(); ++p) {
          m_data[p->first] = PacketData::create(*(p->second));
       }
    }
 }

 PacketPtr Packet::clone() const
 {
    PacketPtr p(new Packet(*this));
    return p;
 }

 void Packet::addData(Packet::DataTypes dataType, const PacketData& data)
 {
    PacketDataPtr deepCopy = PacketData::create(data);
    m_data[dataType] = deepCopy;
 }

 PacketDataPtr Packet::getData(Packet::DataTypes dataType)
 {
    DataTypeMap::iterator dataIterator = m_data.find(dataType);
    bool dataFound = (dataIterator != m_data.end());

    PacketDataPtr dataPtr;
    if(dataFound) {
       dataPtr = dataIterator->second;
    }

    return dataPtr;

 }

 bool Packet::removeData(Packet::DataTypes dataType)
 {
    int numRemoved = m_data.erase(dataType);
    bool wasSuccessful = (numRemoved > 0);
    return wasSuccessful;
 }

 bool Packet::hasUpperLayerData(Packet::DataTypes dataType)
 {

    bool hasUpperData = false;

    if(dataType == Packet::DataTypes_Transport ||
          dataType == Packet::DataTypes_Network ||
          dataType == Packet::DataTypes_Link ||
          dataType == Packet::DataTypes_Physical) {
       bool hasApplicationData =
          (getData(Packet::DataTypes_Application).get() != 0);
       hasUpperData |= hasApplicationData;
    }

    if(!hasUpperData && (dataType == Packet::DataTypes_Network ||
          dataType == Packet::DataTypes_Link ||
          dataType == Packet::DataTypes_Physical)) {
       bool hasTransportData =
          (getData(Packet::DataTypes_Transport).get() != 0);
       hasUpperData |= hasTransportData;
    }

    if(!hasUpperData && (dataType == Packet::DataTypes_Link ||
          dataType == Packet::DataTypes_Physical)) {
       bool hasNetworkData =
          (getData(Packet::DataTypes_Network).get() != 0);
       hasUpperData |= hasNetworkData;
    }

    if(!hasUpperData && (dataType == Packet::DataTypes_Physical)) {
       bool hasLinkData =
          (getData(Packet::DataTypes_Link).get() != 0);
       hasUpperData |= hasLinkData;
    }

    return hasUpperData;

 }

 SimTime Packet::getDuration() const
 {
    double seconds = getSizeInBits() / getDataRate();
    SimTime packetDuration(seconds);
    return packetDuration;
 }