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Receiver.cpp

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 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2009
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 5, D-52074 Aachen, Germany
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 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
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#include <COPPER/Receiver.hpp>
#include <COPPER/Wire.hpp>
#include <COPPER/Transmission.hpp>
#include <WNS/events/MemberFunction.hpp>
#include <string>

using namespace copper;

Receiver::Receiver(const wns::pyconfig::View& _pyco, WireInterface* _wire) :
    macAddress(),
    wire(_wire),
    berDist(NULL),
    sensingTime(_pyco.get<simTimeType>("sensingTime")),
    logger(_pyco.get("logger"))
{
    wns::pyconfig::View distConfig = _pyco.get("ber");
    wns::distribution::DistributionCreator* dc =
        wns::distribution::DistributionFactory::creator(distConfig.get<std::string>("__plugin__"));
    this->berDist = dc->create(distConfig);
}

Receiver::~Receiver()
{
}

bool
Receiver::onData(const UnicastTransmissionPtr& transmission)
{
    if (this->macAddress == transmission->target)
    {
        double ber = (*berDist)();
        MESSAGE_SINGLE(NORMAL, this->logger, "Received unicast data with BER: " << ber);
        this->wns::Subject<Handler>::forEachObserver(
            OnData(transmission->pdu, ber, transmission->collision));
        return true;
    }
    else
    {
        return false;
    }
}

bool
Receiver::onData(const BroadcastTransmissionPtr& transmission)
{
    double ber = (*berDist)();
    MESSAGE_SINGLE(NORMAL, this->logger, "Received broadcast data with BER: " << ber);
    this->wns::Subject<Handler>::forEachObserver(
        OnData(transmission->pdu, ber, transmission->collision));
    return true;
}

void
Receiver::onCopperFree()
{
    this->wns::Subject<CarrierSensing>::forEachObserver(
        wns::events::DelayedMemberFunction<CarrierSensing>(
            &CarrierSensing::onCarrierIdle,
            this->sensingTime));
}

void
Receiver::onCopperBusy()
{
    this->wns::Subject<CarrierSensing>::forEachObserver(
        wns::events::DelayedMemberFunction<CarrierSensing>(
            &CarrierSensing::onCarrierBusy,
            this->sensingTime));
}

void
Receiver::onCollision()
{
    this->wns::Subject<CarrierSensing>::forEachObserver(
        wns::events::DelayedMemberFunction<CarrierSensing>(
            &CarrierSensing::onCollision,
            this->sensingTime));
}

void
Receiver::setDLLUnicastAddress(const wns::service::dll::UnicastAddress& _macAddress)
{
    assure(this->macAddress.isValid() == false, "MAC address may only be set once!");
    assure(_macAddress.isValid() == true, "Provided invalid MAC address!");

    this->macAddress = _macAddress;
    this->wire->addReceiver(this, this->macAddress);
}

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