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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 itkImageFilterToVideoFilterWrapper_hxx
#define itkImageFilterToVideoFilterWrapper_hxx
namespace itk
{
template <typename TImageToImageFilter>
ImageFilterToVideoFilterWrapper<TImageToImageFilter>::ImageFilterToVideoFilterWrapper()
{
// Always a 1-to-1 filter
this->TemporalProcessObject::m_UnitInputNumberOfFrames = 1;
this->TemporalProcessObject::m_UnitOutputNumberOfFrames = 1;
this->TemporalProcessObject::m_InputStencilCurrentFrameIndex = 0;
this->TemporalProcessObject::m_FrameSkipPerOutput = 1;
// Initialize image filter to nullptr
m_ImageFilter = nullptr;
}
template <typename TImageToImageFilter>
void
ImageFilterToVideoFilterWrapper<TImageToImageFilter>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
itkPrintSelfObjectMacro(ImageFilter);
}
template <typename TImageToImageFilter>
void
ImageFilterToVideoFilterWrapper<TImageToImageFilter>::TemporalStreamingGenerateData()
{
// Make sure ImageFilter is not null
if (m_ImageFilter.IsNull())
{
itkExceptionMacro("ImageFilter has not been set");
}
// Get the input and output video streams
const InputVideoStreamType * input = this->GetInput();
OutputVideoStreamType * output = this->GetOutput();
// Get input and output frame numbers
typename OutputVideoStreamType::TemporalRegionType outReqTempRegion = output->GetRequestedTemporalRegion();
SizeValueType outFrameNum = outReqTempRegion.GetFrameStart();
typename InputVideoStreamType::TemporalRegionType inReqTempRegion = input->GetRequestedTemporalRegion();
SizeValueType inFrameNum = inReqTempRegion.GetFrameStart();
// Set up the internal image pipeline
m_ImageFilter->SetInput(input->GetFrame(inFrameNum));
// Update the filter
m_ImageFilter->Update();
// Set the output frame
output->SetFrame(outFrameNum, m_ImageFilter->GetOutput());
// Make a new output for the filter so this output doesn't get destroyed
m_ImageFilter->GetOutput()->DisconnectPipeline();
m_ImageFilter->MakeOutput(0);
}
} // end namespace itk
#endif
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