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/************************************************************************
*
* Copyright (C) 2021-2022 IRCAD France
* Copyright (C) 2017 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight 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 along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include "io/dicom/config.hpp"
#include "io/dicom/container/DicomCodedAttribute.hpp"
#include <gdcmAttribute.h>
#include <gdcmDataSet.h>
#include <gdcmElement.h>
#include <gdcmSequenceOfItems.h>
namespace sight::io::dicom
{
namespace helper
{
/**
* @brief This class contains helpers to write information into GDCM datasets.
*/
class IO_DICOM_CLASS_API DicomDataWriter
{
public:
/**
* @brief Insert an empty tag in a data set. Useful for empty type 2 tags.
* @param[in] dataset Data set of tags
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setEmptyTagValue(gdcm::DataSet& dataset)
{
gdcm::Attribute<GROUP, ELEMENT> attribute;
dataset.Insert(attribute.GetAsDataElement());
}
/**
* @brief Insert the value of a tag in a data set.
* @param[in] value Value to set
* @param[in] dataset Data set of tags
* @tparam T Type of value
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<typename T, std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setTagValue(const T& value, gdcm::DataSet& dataset)
{
gdcm::Attribute<GROUP, ELEMENT> attribute;
attribute.SetValue(value);
dataset.Insert(attribute.GetAsDataElement());
}
/**
* @brief Insert the string value of a tag in a data set.
* @param[in] value Value to set
* @param[in] dataset Data set of tags
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setTagValue(const std::string& value, gdcm::DataSet& dataset)
{
setTagValue<std::string, GROUP, ELEMENT>(value, dataset);
}
/**
* @brief Insert multiple values of a tag in a data set.
* @param[in] array An Array.
* @param[in] size Size of the array.
* @param[in] dataset Data set of tags.
* @tparam T Type of pointer.
* @tparam GROUP Group of the tag.
* @tparam ELEMENT Element of the tag.
*/
template<typename T, std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setTagValues(const T* array, const std::size_t size, gdcm::DataSet& dataset)
{
gdcm::Attribute<GROUP, ELEMENT> attribute;
if(array)
{
attribute.SetValues(array, static_cast<unsigned int>(size));
}
dataset.Insert(attribute.GetAsDataElement());
}
/**
* @brief Set and insert a sequence of items with a tag in the specified data set.
* @param[in] sequence Sequence of items to insert
* @param[in] dataset Data set
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setSequenceTagValue(
gdcm::SmartPointer<gdcm::SequenceOfItems> sequence,
gdcm::DataSet& dataset
)
{
// Create the sequence of items
gdcm::DataElement dataElement(gdcm::Attribute<GROUP, ELEMENT>::GetTag());
dataElement.SetVR(gdcm::VR::SQ);
dataElement.SetValue(*sequence);
dataElement.SetVL(sequence->GetLength());
// Insert the sequence of items
dataset.Insert(dataElement);
}
/**
* @brief Create and set a sequence of items with a tag in the specified data set.
* @param[in] dataset Data set
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static gdcm::SmartPointer<gdcm::SequenceOfItems> createAndSetSequenceTagValue(gdcm::DataSet& dataset)
{
gdcm::SmartPointer<gdcm::SequenceOfItems> sequence = new gdcm::SequenceOfItems();
sequence->SetLengthToUndefined();
setSequenceTagValue<GROUP, ELEMENT>(sequence, dataset);
return sequence;
}
/**
* @brief Insert a sequence of items with a tag in the specified data set.
* If the tag already exists, items of the old and new sequences are added in a new one.
* @param[in] sequence Sequence of items to insert
* @param[in] dataset Data set
*
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setAndMergeSequenceTagValue(
gdcm::SmartPointer<gdcm::SequenceOfItems> sequence,
gdcm::DataSet& dataset
)
{
// Set or add the SQ
if(!dataset.FindDataElement(gdcm::Attribute<GROUP, ELEMENT>::GetTag()))
{
setSequenceTagValue<GROUP, ELEMENT>(sequence, dataset);
}
else
{
// Get old SQ
const gdcm::DataElement& dataElement =
dataset.GetDataElement(gdcm::Attribute<GROUP, ELEMENT>::GetTag());
gdcm::SmartPointer<gdcm::SequenceOfItems> oldSequence = dataElement.GetValueAsSQ();
// Add items of the new SQ to the old SQ
auto nbItem = sequence->GetNumberOfItems();
for(decltype(nbItem) i = 1 ; i <= nbItem ; ++i) // WARN : item start at 1
{
oldSequence->AddItem(sequence->GetItem(i));
}
}
}
/**
* @brief Set tag value for the code sequence.
* @param[in] attribute attribute to set
* @param[in] dataset Data set
*
* @tparam GROUP Group of the tag
* @tparam ELEMENT Element of the tag
*/
template<std::uint16_t GROUP, std::uint16_t ELEMENT>
static void setCodeSequenceTagValue(
io::dicom::container::DicomCodedAttribute attribute,
gdcm::DataSet& dataset
)
{
auto sequence = createAndSetSequenceTagValue<GROUP, ELEMENT>(dataset);
gdcm::Item item;
item.SetVLToUndefined();
gdcm::DataSet& itemDataset = item.GetNestedDataSet();
// Code Value - Type 1C
setTagValue<0x0008, 0x0100>(attribute.getCodeValue(), itemDataset);
// Coding Scheme Designator - Type 1C
setTagValue<0x0008, 0x0102>(attribute.getCodingSchemeDesignator(), itemDataset);
// Coding Scheme Version - Type 1C
if(!attribute.getCodingSchemeVersion().empty())
{
setTagValue<0x0008, 0x0103>(attribute.getCodingSchemeVersion(), itemDataset);
}
// Code Meaning - Type 1
setTagValue<0x0008, 0x0104>(attribute.getCodeMeaning(), itemDataset);
sequence->AddItem(item);
}
};
} // namespace helper
} // namespace sight::io::dicom
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