forked from InsightSoftwareConsortium/itk-wasm
/
itkInputImageIO.h
127 lines (109 loc) · 3.79 KB
/
itkInputImageIO.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 itkInputImageIO_h
#define itkInputImageIO_h
#include "itkPipeline.h"
#include "itkWasmImageIOBase.h"
#include "itkWasmImageIO.h"
#ifndef ITK_WASM_NO_MEMORY_IO
#include "itkWasmExports.h"
#endif
#ifndef ITK_WASM_NO_FILESYSTEM_IO
#endif
namespace itk
{
namespace wasm
{
/**
*\class InputImageIO
* \brief Input image for an itk::wasm::Pipeline from an itk::ImageIOBase
*
* This image is read from the filesystem or memory when ITK_WASM_PARSE_ARGS is called.
*
* This class is for the WriteImage itk-wasm pipeline. Most pipelines will use itk::wasm::InputImage.
*
* \ingroup WebAssemblyInterface
*/
class InputImageIO
{
public:
void Set(const WasmImageIOBase * imageIO) {
this->m_WasmImageIOBase = imageIO;
}
const WasmImageIOBase * Get() const {
return this->m_WasmImageIOBase.GetPointer();
}
InputImageIO() = default;
~InputImageIO() = default;
protected:
typename WasmImageIOBase::ConstPointer m_WasmImageIOBase;
};
bool lexical_cast(const std::string &input, InputImageIO &inputImageIO)
{
if (input.empty())
{
return false;
}
if (wasm::Pipeline::get_use_memory_io())
{
#ifndef ITK_WASM_NO_MEMORY_IO
const unsigned int index = std::stoi(input);
auto json = getMemoryStoreInputJSON(0, index);
rapidjson::Document document;
document.Parse(json.c_str());
auto wasmImageIO = itk::WasmImageIO::New();
wasmImageIO->SetJSON(document);
const unsigned int dimension = wasmImageIO->GetNumberOfDimensions();
auto wasmImageIOBase = itk::WasmImageIOBase::New();
const rapidjson::Value & directionJson = document["direction"];
const std::string directionString( directionJson.GetString() );
const double * directionPtr = reinterpret_cast< double * >( std::strtoull(directionString.substr(35).c_str(), nullptr, 10) );
WasmImageIOBase::DirectionContainerType * directionContainer = wasmImageIOBase->GetDirectionContainer();
directionContainer->resize(dimension*dimension);
directionContainer->assign(directionPtr, directionPtr + dimension*dimension);
const rapidjson::Value & dataJson = document["data"];
const std::string dataString( dataJson.GetString() );
const char * dataPtr = reinterpret_cast< char * >( std::strtoull(dataString.substr(35).c_str(), nullptr, 10) );
WasmImageIOBase::PixelDataContainerType * pixelDataContainer = wasmImageIOBase->GetPixelDataContainer();
const size_t pixelDataBytes = wasmImageIO->GetImageSizeInBytes();
pixelDataContainer->resize(pixelDataBytes);
pixelDataContainer->assign(dataPtr, dataPtr + pixelDataBytes);
wasmImageIOBase->SetImageIO(wasmImageIO, false);
wasmImageIOBase->SetJSON(json);
inputImageIO.Set(wasmImageIOBase);
#else
return false;
#endif
}
else
{
#ifndef ITK_WASM_NO_FILESYSTEM_IO
auto wasmImageIO = itk::WasmImageIO::New();
wasmImageIO->SetFileName(input);
auto wasmImageIOBase = itk::WasmImageIOBase::New();
wasmImageIOBase->SetImageIO(wasmImageIO);
inputImageIO.Set(wasmImageIOBase);
#else
return false;
#endif
}
return true;
}
} // end namespace wasm
} // end namespace itk
#endif