cxEncodedPackage.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software
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#ifndef ENCODEDPACKAGE_H
#define ENCODEDPACKAGE_H

#include <iostream>
#include <boost/shared_ptr.hpp>
//#include <QByteArray>
#include <QObject>

#include "igtlMessageHeader.h"

namespace cx
{

class EncodedPackage : public QObject
{
Q_OBJECT

public:
    struct ByteArray
    {
                char* pointer;
        int size;
    };
    typedef boost::shared_ptr<ByteArray> ByteArrayPtr;

public:
        EncodedPackage(char* pointer=NULL, int size=0);
    virtual ~EncodedPackage() {}
    virtual const ByteArrayPtr data() const = 0;
    //TODO rename these two...
    virtual void notifyDataArrived() = 0;
    virtual bool isFinishedWith() = 0;

signals:
    void dataArrived();

protected:
    ByteArrayPtr mData;

};
typedef boost::shared_ptr<EncodedPackage> EncodedPackagePtr;


//--------------------------------------------------------------
template<class TYPE>
class igtlEncodedPackage : public EncodedPackage
{
public:
    static EncodedPackagePtr create(typename TYPE::Pointer msg)
    {
        return EncodedPackagePtr(new igtlEncodedPackage<TYPE>(msg));
    }
    explicit igtlEncodedPackage(typename TYPE::Pointer msg) :
           EncodedPackage(reinterpret_cast<char*>(msg->GetPackPointer()), msg->GetPackSize()),
       mMsg(msg),
       mCanBeOverWritten(true)
    {}
    virtual ~igtlEncodedPackage() {}

    const ByteArrayPtr data() const
    {
        return mData;
    }

    virtual void notifyDataArrived()
    {
        std::cout << "dataArrived()" << std::endl;
        mCanBeOverWritten = false;
        emit dataArrived();
    }

    virtual bool isFinishedWith()
    {
        return mCanBeOverWritten;
    }

    //private???
    typename TYPE::Pointer mMsg;
protected:
    bool mCanBeOverWritten;
};

class igtlEncodedBodyPackage : public igtlEncodedPackage<igtl::MessageBase>
{
public:
    static EncodedPackagePtr create(igtl::MessageBase::Pointer msg)
    {
        return EncodedPackagePtr(new igtlEncodedBodyPackage(msg));
    }
    explicit igtlEncodedBodyPackage(igtl::MessageBase::Pointer msg) :
        igtlEncodedPackage(msg)
    {
        mMsg = msg;
        mCanBeOverWritten = true;
                mData->pointer = reinterpret_cast<char*>(msg->GetPackBodyPointer());
        mData->size = msg->GetPackBodySize();
    }
    virtual ~igtlEncodedBodyPackage() {}
};


//--------------------------------------------------------------
template<class TYPE>
static EncodedPackagePtr createEncodedPackage(typename TYPE::Pointer msg)
{
    return EncodedPackagePtr(new igtlEncodedPackage<TYPE>(msg));
}

} //namespace cx
#endif // ENCODEDPACKAGE_H