itkVideoSource.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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
 *
 *         http://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 itkVideoSource_h
#define itkVideoSource_h

#include "itkTemporalProcessObject.h"
#include "itkVideoStream.h"

namespace itk
{

template< typename TOutputVideoStream >
class ITK_TEMPLATE_EXPORT VideoSource : public TemporalProcessObject
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(VideoSource);

  /*-TYPEDEFS----------------------------------------------------------------*/

  using Self = VideoSource;
  using Superclass = TemporalProcessObject;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;
  using ConstWeakPointer = WeakPointer< const Self >;
  using OutputVideoStreamType = TOutputVideoStream;

  using OutputFrameType = typename OutputVideoStreamType::FrameType;
  using OutputFrameSpatialRegionType = typename OutputVideoStreamType::SpatialRegionType;
  using OutputFrameIndexType = typename OutputVideoStreamType::IndexType;
  using OutputFramePixelType = typename OutputVideoStreamType::PixelType;
  using OutputFramePointType = typename OutputVideoStreamType::PointType;
  using OutputFrameSpacingType = typename OutputVideoStreamType::SpacingType;
  using OutputFrameSizeType = typename OutputVideoStreamType::SizeType;
  using OutputFrameDirectionType = typename OutputVideoStreamType::DirectionType;

  itkNewMacro(Self);

  itkTypeMacro(VideoSource, TemporalProcessObject);

  /*-PUBLIC METHODS----------------------------------------------------------*/

  static constexpr unsigned int OutputFrameDimension = OutputFrameType::ImageDimension;
  static unsigned int GetOutputFrameDimension()
  {
    return OutputFrameType::ImageDimension;
  }

  OutputVideoStreamType* GetOutput();

  OutputVideoStreamType* GetOutput(unsigned int idx);

  virtual void GraftNthOutput(unsigned int idx, OutputVideoStreamType* output);

  virtual void GraftOutput(OutputVideoStreamType* output);

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx) override;

protected:

  void GenerateOutputRequestedTemporalRegion(TemporalDataObject* output) override;

  void TemporalStreamingGenerateData() override;

  virtual void ThreadedGenerateData(
    const OutputFrameSpatialRegionType& outputRegionForThread,
    int threadId);

  virtual void AllocateOutputs();

  virtual void BeforeThreadedGenerateData() {
  }

  virtual void AfterThreadedGenerateData() {
  }

  virtual int SplitRequestedSpatialRegion(int i, int num,
                                          OutputFrameSpatialRegionType& splitRegion);

  static ITK_THREAD_RETURN_FUNCTION_CALL_CONVENTION ThreaderCallback(void* arg);

  struct ThreadStruct {
    Pointer Filter;
    };

  VideoSource();
  ~VideoSource() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

private:

};  // end class VideoSource

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVideoSource.hxx"
#endif

#endif