forked from InsightSoftwareConsortium/itk-wasm
/
itkOutputImage.h
126 lines (113 loc) · 3.77 KB
/
itkOutputImage.h
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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkOutputImage_h
#define itkOutputImage_h
#include "itkPipeline.h"
#ifndef ITK_WASM_NO_MEMORY_IO
#include "itkWASMExports.h"
#include "itkWASMImage.h"
#include "itkImageToWASMImageFilter.h"
#endif
#ifndef ITK_WASM_NO_FILESYSTEM_IO
#include "itkImageFileWriter.h"
#endif
namespace itk
{
namespace wasm
{
/**
*\class OutputImage
* \brief Output image for an itk::wasm::Pipeline
*
* This image is written to the filesystem or memory when it goes out of scope.
*
* Call `GetImage()` to get the TImage * to use an input to a pipeline.
*
* \ingroup WebAssemblyInterface
*/
template <typename TImage>
class ITK_TEMPLATE_EXPORT OutputImage
{
public:
using ImageType = TImage;
void Set(const ImageType * image) {
this->m_Image = image;
}
const ImageType * Get() const {
return this->m_Image.GetPointer();
}
/** FileName or output index. */
void SetIdentifier(const std::string & identifier)
{
this->m_Identifier = identifier;
}
const std::string & GetIdentifier() const
{
return this->m_Identifier;
}
OutputImage() = default;
~OutputImage() {
if(wasm::Pipeline::GetUseMemoryIO())
{
#ifndef ITK_WASM_NO_MEMORY_IO
if (!this->m_Image.IsNull() && !this->m_Identifier.empty())
{
using ImageToWASMImageFilterType = ImageToWASMImageFilter<ImageType>;
auto imageToWASMImageFilter = ImageToWASMImageFilterType::New();
imageToWASMImageFilter->SetInput(this->m_Image);
imageToWASMImageFilter->Update();
auto wasmImage = imageToWASMImageFilter->GetOutput();
const auto index = std::stoi(this->m_Identifier);
setMemoryStoreOutputDataObject(0, index, wasmImage);
const auto dataAddress = reinterpret_cast< size_t >( wasmImage->GetImage()->GetBufferPointer() );
using ConvertPixelTraits = DefaultConvertPixelTraits<typename ImageType::PixelType>;
const auto dataSize = wasmImage->GetImage()->GetPixelContainer()->Size() * sizeof(typename ConvertPixelTraits::ComponentType) * ConvertPixelTraits::GetNumberOfComponents();
setMemoryStoreOutputArray(0, index, 0, dataAddress, dataSize);
const auto directionAddress = reinterpret_cast< size_t >( wasmImage->GetImage()->GetDirection().GetVnlMatrix().begin() );
const auto directionSize = wasmImage->GetImage()->GetDirection().GetVnlMatrix().size() * sizeof(double);
setMemoryStoreOutputArray(0, index, 1, directionAddress, directionSize);
}
#else
throw std::logic_error("Memory IO not supported");
#endif
}
else
{
#ifndef ITK_WASM_NO_FILESYSTEM_IO
if (!this->m_Image.IsNull() && !this->m_Identifier.empty())
{
itk::WriteImage(this->m_Image, this->m_Identifier);
}
#else
throw std::logic_error("Filesystem IO not supported");
#endif
}
}
protected:
typename TImage::ConstPointer m_Image;
std::string m_Identifier;
};
template <typename TImage>
bool lexical_cast(const std::string &input, OutputImage<TImage> &outputImage)
{
outputImage.SetIdentifier(input);
return true;
}
} // namespace wasm
} // namespace itk
#endif