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94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkThreadedImageAlgorithm.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkThreadedImageAlgorithm - Generic filter that has one input..
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// .SECTION Description
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// vtkThreadedImageAlgorithm is a filter superclass that hides much of the
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// pipeline complexity. It handles breaking the pipeline execution
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// into smaller extents so that the vtkImageData limits are observed. It
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// also provides support for multithreading. If you don't need any of this
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// functionality, consider using vtkSimpleImageToImageAlgorithm instead.
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// .SECTION See also
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// vtkSimpleImageToImageAlgorithm
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#ifndef vtkThreadedImageAlgorithm_h
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#define vtkThreadedImageAlgorithm_h
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#include "vtkCommonExecutionModelModule.h" // For export macro
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#include "vtkImageAlgorithm.h"
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class vtkImageData;
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class vtkMultiThreader;
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class VTKCOMMONEXECUTIONMODEL_EXPORT vtkThreadedImageAlgorithm : public vtkImageAlgorithm
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{
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public:
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vtkTypeMacro(vtkThreadedImageAlgorithm,vtkImageAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// If the subclass does not define an Execute method, then the task
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// will be broken up, multiple threads will be spawned, and each thread
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// will call this method. It is public so that the thread functions
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// can call this method.
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virtual void ThreadedRequestData(vtkInformation *request,
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vtkInformationVector **inputVector,
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vtkInformationVector *outputVector,
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vtkImageData ***inData,
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vtkImageData **outData,
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int extent[6], int threadId);
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// also support the old signature
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virtual void ThreadedExecute(vtkImageData *inData,
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vtkImageData *outData,
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int extent[6], int threadId);
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// Description:
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// Get/Set the number of threads to create when rendering
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vtkSetClampMacro( NumberOfThreads, int, 1, VTK_MAX_THREADS );
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vtkGetMacro( NumberOfThreads, int );
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// Description:
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// Putting this here until I merge graphics and imaging streaming.
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virtual int SplitExtent(int splitExt[6], int startExt[6],
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int num, int total);
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protected:
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vtkThreadedImageAlgorithm();
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~vtkThreadedImageAlgorithm();
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vtkMultiThreader *Threader;
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int NumberOfThreads;
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// Description:
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// This is called by the superclass.
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// This is the method you should override.
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virtual int RequestData(vtkInformation* request,
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vtkInformationVector** inputVector,
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vtkInformationVector* outputVector);
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private:
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vtkThreadedImageAlgorithm(const vtkThreadedImageAlgorithm&); // Not implemented.
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void operator=(const vtkThreadedImageAlgorithm&); // Not implemented.
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};
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#endif
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