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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 itkDecimateFramesVideoFilter_h
#define itkDecimateFramesVideoFilter_h
#include "itkVideoToVideoFilter.h"
namespace itk
{
/**
* \class DecimateFramesVideoFilter
* \brief Reduce a video's frame-rate by keeping every Nth frame
*
* This filter simply takes an input video and passes every Nth frame through
* to the output.
*
* \ingroup ITKVideoFiltering
*/
template <typename TVideoStream>
class ITK_TEMPLATE_EXPORT DecimateFramesVideoFilter : public VideoToVideoFilter<TVideoStream, TVideoStream>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DecimateFramesVideoFilter);
/** Standard class type aliases */
using VideoStreamType = TVideoStream;
using InputVideoStreamType = TVideoStream;
using OutputVideoStreamType = TVideoStream;
using Self = DecimateFramesVideoFilter<VideoStreamType>;
using Superclass = VideoToVideoFilter<VideoStreamType, VideoStreamType>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using ConstWeakPointer = WeakPointer<const Self>;
using FrameType = typename TVideoStream::FrameType;
using PixelType = typename FrameType::PixelType;
using FrameSpatialRegionType = typename FrameType::RegionType;
itkNewMacro(Self);
itkOverrideGetNameOfClassMacro(DecimateFramesVideoFilter);
/** Get/Set the spacing of the preserved frames */
void
SetPreservedFrameSpacing(SizeValueType numFrames);
SizeValueType
GetPreservedFrameSpacing();
protected:
/** Constructor and Destructor */
DecimateFramesVideoFilter();
~DecimateFramesVideoFilter() override = default;
/** PrintSelf */
void
PrintSelf(std::ostream & os, Indent indent) const override;
/** DecimateFramesVideoFilter is implemented as a temporal streaming and
* spatially multithreaded filter, so we override ThreadedGenerateData */
void
ThreadedGenerateData(const FrameSpatialRegionType & outputRegionForThread, int threadId) override;
private:
}; // end class DecimateFramesVideoFilter
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkDecimateFramesVideoFilter.hxx"
#endif
#endif
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