VTK  9.0.3
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;
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:
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
Abstract interface for data compression classes.
a simple class to control print indentation
Definition: vtkIndent.h:34
Data compression using zlib.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
int GetCompressionLevel() override
Get/Set the compression level.
~vtkZLibDataCompressor() override
size_t UncompressBuffer(unsigned char const *compressedData, size_t compressedSize, unsigned char *uncompressedData, size_t uncompressedSize) override
size_t GetMaximumCompressionSpace(size_t size) override
Get the maximum space that may be needed to store data of the given uncompressed size after compressi...
size_t CompressBuffer(unsigned char const *uncompressedData, size_t uncompressedSize, unsigned char *compressedData, size_t compressionSpace) override
static vtkZLibDataCompressor * New()
void SetCompressionLevel(int compressionLevel) override
Compression performance varies greatly with compression level Require level setting from any vtkDataC...
@ size
Definition: vtkX3D.h:259