ImageLazyStream.hpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2018.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#pragma once

#include "fwDcmtkIO/config.hpp"

#include <fwCore/base.hpp>

#include <fwMedData/DicomSeries.hpp>

#include <fwMemory/stream/in/IFactory.hpp>

#include <fwTools/Type.hpp>

#include <boost/iostreams/stream.hpp>

#include <vector>

namespace fwDcmtkIO
{
namespace reader
{
namespace main
{

//------------------------------------------------------------------------------

class FWDCMTKIO_CLASS_API ImageLazyInformation
{
public:
    typedef SPTR ( ImageLazyInformation ) sptr;

    ::fwMedData::DicomSeries::csptr m_dicomSeries;

    unsigned int m_rows;

    unsigned int m_columns;

    unsigned int m_depth;

    double m_rescaleSlope;

    double m_rescaleIntercept;

    unsigned short m_pixelRepresentation;

    ::fwTools::Type m_imageType;

};

//------------------------------------------------------------------------------

class FWDCMTKIO_CLASS_API ImageLazySource
{
public:
    typedef char char_type;
    typedef ::boost::iostreams::source_tag category;

    ImageLazySource( ImageLazyInformation::sptr dcmInfo );

    std::streamsize read(char* s, std::streamsize n);

private:
    ImageLazyInformation::sptr m_dcmInfo;

    size_t m_frameSize;

    int m_currentFrame;

    size_t m_currentPosition;

    char* m_frame;

    ::fwMedData::DicomSeries::DicomContainerType::const_iterator m_currentDicom;
};

//------------------------------------------------------------------------------

class FWDCMTKIO_CLASS_API ImageLazyStream : public ::fwMemory::stream::in::IFactory
{

public:

    ImageLazyStream( ImageLazyInformation::sptr dcmInfo );

protected:

    SPTR(std::istream) get();

    ImageLazyInformation::sptr m_dcmInfo;
};

//------------------------------------------------------------------------------

} //main
} //reader
} //fwDcmtkIO