VTK  9.3.20240329
vtkPNrrdReader.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
3 // SPDX-License-Identifier: BSD-3-Clause
4 
27 #ifndef vtkPNrrdReader_h
28 #define vtkPNrrdReader_h
29 
30 #include "vtkIOMPIImageModule.h" // For export macro
31 #include "vtkNrrdReader.h"
32 
33 VTK_ABI_NAMESPACE_BEGIN
34 class vtkCharArray;
36 class vtkMPIOpaqueFileHandle;
37 
38 class VTKIOMPIIMAGE_EXPORT vtkPNrrdReader : public vtkNrrdReader
39 {
40 public:
41  vtkTypeMacro(vtkPNrrdReader, vtkNrrdReader);
42  static vtkPNrrdReader* New();
43  void PrintSelf(ostream& os, vtkIndent indent) override;
44 
46 
50  vtkGetObjectMacro(Controller, vtkMultiProcessController);
53 
54 protected:
56  ~vtkPNrrdReader() override;
57 
58  int ReadHeader() override;
59  int ReadHeader(vtkCharArray* headerBuffer) override;
60 
65 
71  virtual void PartitionController(const int extent[6]);
72 
77  virtual unsigned long GetHeaderSize(vtkMPIOpaqueFileHandle& file);
78 
85  virtual void SetupFileView(vtkMPIOpaqueFileHandle& file, const int extent[6]);
86 
93  virtual void ReadSlice(int slice, const int extent[6], void* buffer);
94 
100 
102 
109 
111 
113 
114 private:
115  vtkPNrrdReader(const vtkPNrrdReader&) = delete;
116  void operator=(const vtkPNrrdReader&) = delete;
117 };
118 
119 VTK_ABI_NAMESPACE_END
120 #endif // vtkPNrrdReader_h
dynamic, self-adjusting array of char
Definition: vtkCharArray.h:60
general representation of visualization data
topologically and geometrically regular array of data
Definition: vtkImageData.h:156
a simple class to control print indentation
Definition: vtkIndent.h:108
Store vtkAlgorithm input/output information.
Multiprocessing communication superclass.
Read nrrd files file system.
Definition: vtkNrrdReader.h:36
Read nrrd files efficiently from parallel file systems (and reasonably well elsewhere).
virtual unsigned long GetHeaderSize(vtkMPIOpaqueFileHandle &file)
Get the header size of the given open file.
vtkMultiProcessController * Controller
int ReadHeader(vtkCharArray *headerBuffer) override
int ReadHeader() override
virtual void ReadSlice(int slice, const int extent[6], void *buffer)
Given a slice of the data, open the appropriate file, read the data into given buffer,...
~vtkPNrrdReader() override
virtual void PartitionController(const int extent[6])
Break up the controller based on the files each process reads.
virtual void SetupFileView(vtkMPIOpaqueFileHandle &file, const int extent[6])
Set up a "view" on the open file that will allow you to read the 2D or 3D subarray from the file in o...
virtual void TransformData(vtkImageData *data)
Transform the data from the order read from a file to the order to place in the output data (as defin...
static vtkPNrrdReader * New()
int GetDataScalarTypeSize()
Returns the size, in bytes of the scalar data type (GetDataScalarType).
void SetGroupedController(vtkMultiProcessController *)
A group of processes that are reading the same file (as determined by PartitionController.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkMultiProcessController * GroupedController
A group of processes that are reading the same file (as determined by PartitionController.
virtual void SetController(vtkMultiProcessController *)
Get/set the multi process controller to use for coordinated reads.
void ExecuteDataWithInformation(vtkDataObject *data, vtkInformation *outInfo) override
This is a convenience method that is implemented in many subclasses instead of RequestData.
@ extent
Definition: vtkX3D.h:345
@ data
Definition: vtkX3D.h:315