VTK  9.0.1
vtkZLibDataCompressor.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkZLibDataCompressor.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
23 #ifndef vtkZLibDataCompressor_h
24 #define vtkZLibDataCompressor_h
25 
26 #include "vtkDataCompressor.h"
27 #include "vtkIOCoreModule.h" // For export macro
28 
29 class VTKIOCORE_EXPORT vtkZLibDataCompressor : public vtkDataCompressor
30 {
31 public:
33  void PrintSelf(ostream& os, vtkIndent indent) override;
34  static vtkZLibDataCompressor* New();
35 
42  size_t GetMaximumCompressionSpace(size_t size) override;
43 
45 
48  // Compression level getter required by vtkDataCompressor.
49  int GetCompressionLevel() override;
50 
51  // Compression level setter required by vtkDataCompresor.
52  void SetCompressionLevel(int compressionLevel) override;
54 
55 protected:
57  ~vtkZLibDataCompressor() override;
58 
60 
61  // Compression method required by vtkDataCompressor.
62  size_t CompressBuffer(unsigned char const* uncompressedData, size_t uncompressedSize,
63  unsigned char* compressedData, size_t compressionSpace) override;
64  // Decompression method required by vtkDataCompressor.
65  size_t UncompressBuffer(unsigned char const* compressedData, size_t compressedSize,
66  unsigned char* uncompressedData, size_t uncompressedSize) override;
67 
68 private:
70  void operator=(const vtkZLibDataCompressor&) = delete;
71 };
72 
73 #endif
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
Abstract interface for data compression classes.
virtual size_t CompressBuffer(unsigned char const *uncompressedData, size_t uncompressedSize, unsigned char *compressedData, size_t compressionSpace)=0
virtual size_t GetMaximumCompressionSpace(size_t size)=0
Get the maximum space that may be needed to store data of the given uncompressed size after compressi...
a simple class to control print indentation
Definition: vtkIndent.h:33
virtual size_t UncompressBuffer(unsigned char const *compressedData, size_t compressedSize, unsigned char *uncompressedData, size_t uncompressedSize)=0
Data compression using zlib.
virtual void SetCompressionLevel(int compressionLevel)=0
Compression performance varies greatly with compression level Require level setting from any vtkDataC...
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on...
virtual int GetCompressionLevel()=0