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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 itkGPUBinaryThresholdImageFilter_hxx
#define itkGPUBinaryThresholdImageFilter_hxx
namespace itk
{
template <typename TInputImage, typename TOutputImage>
GPUBinaryThresholdImageFilter<TInputImage, TOutputImage>::GPUBinaryThresholdImageFilter()
{
std::ostringstream defines;
if (TInputImage::ImageDimension > 3)
{
itkExceptionMacro("GPUBinaryThresholdImageFilter supports 1/2/3D image.");
}
std::vector<std::string> validTypes;
validTypes.emplace_back("unsigned char");
validTypes.emplace_back("unsigned short");
validTypes.emplace_back("char");
validTypes.emplace_back("int");
validTypes.emplace_back("unsigned int");
validTypes.emplace_back("float");
validTypes.emplace_back("double");
defines << "#define DIM_" << TInputImage::ImageDimension << '\n';
std::string validTypeName;
bool isValid = GetValidTypename(typeid(typename TInputImage::PixelType), validTypes, validTypeName);
if (isValid)
{
defines << "#define InPixelType " << validTypeName << '\n' << "#define OutPixelType " << validTypeName << '\n';
#ifdef __APPLE__
// This is to work around a bug in the OpenCL compiler on Mac OS 10.6 and 10.7 with NVidia drivers
// where the compiler was not handling unsigned char arguments correctly.
// be sure to define the kernel arguments as InArgType and OutArgType in the kernel source
// Using unsigned short instead of unsigned char in the kernel definition
// is a known workaround to this problem.
if (validTypeName == "unsigned char")
{
defines << "#define InArgType unsigned short\n"
<< "#define OutArgType unsigned short\n";
}
else
{
defines << "#define InArgType " << validTypeName << '\n' << "#define OutArgType " << validTypeName << '\n';
}
#else
defines << "#define InArgType " << validTypeName << '\n' << "#define OutArgType " << validTypeName << '\n';
#endif
}
else
{
std::ostringstream excpMsg;
excpMsg << "GPUBinaryThresholdImageFilter supports";
unsigned int sz = validTypes.size();
for (unsigned int ii = 0; ii < sz; ++ii)
{
if (ii < sz - 1)
{
excpMsg << ' ' << validTypes[ii] << ',';
}
else
{
excpMsg << " and " << validTypes[ii] << " input and output images.";
}
}
itkExceptionMacro(<< excpMsg.str().c_str());
}
const char * GPUSource = GPUBinaryThresholdImageFilter::GetOpenCLSource();
// load and build program
this->m_GPUKernelManager->LoadProgramFromString(GPUSource, defines.str().c_str());
// create kernel
this->m_UnaryFunctorImageFilterGPUKernelHandle = this->m_GPUKernelManager->CreateKernel("BinaryThresholdFilter");
}
template <typename TInputImage, typename TOutputImage>
void
GPUBinaryThresholdImageFilter<TInputImage, TOutputImage>::GPUGenerateData()
{
// set up the functor values
typename InputPixelObjectType::Pointer lowerThreshold = this->GetLowerThresholdInput();
typename InputPixelObjectType::Pointer upperThreshold = this->GetUpperThresholdInput();
if (lowerThreshold->Get() > upperThreshold->Get())
{
itkExceptionMacro("Lower threshold cannot be greater than upper threshold.");
}
// Setup up the functor
this->GetFunctor().SetLowerThreshold(lowerThreshold->Get());
this->GetFunctor().SetUpperThreshold(upperThreshold->Get());
this->GetFunctor().SetInsideValue(this->GetInsideValue());
this->GetFunctor().SetOutsideValue(this->GetOutsideValue());
GPUSuperclass::GPUGenerateData();
}
} // end of namespace itk
#endif
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