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/*=========================================================================
Program: Visualization Toolkit
Module: vtkZLibDataCompressor.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkZLibDataCompressor
* @brief Data compression using zlib.
*
* vtkZLibDataCompressor provides a concrete vtkDataCompressor class
* using zlib for compressing and uncompressing data.
*/
#ifndef vtkZLibDataCompressor_h
#define vtkZLibDataCompressor_h
#include "vtkIOCoreModule.h" // For export macro
#include "vtkDataCompressor.h"
class VTKIOCORE_EXPORT vtkZLibDataCompressor : public vtkDataCompressor
{
public:
vtkTypeMacro(vtkZLibDataCompressor,vtkDataCompressor);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
static vtkZLibDataCompressor* New();
/**
* Get the maximum space that may be needed to store data of the
* given uncompressed size after compression. This is the minimum
* size of the output buffer that can be passed to the four-argument
* Compress method.
*/
size_t GetMaximumCompressionSpace(size_t size) VTK_OVERRIDE;
//@{
/**
* Get/Set the compression level.
*/
vtkSetClampMacro(CompressionLevel, int, 0, 9);
vtkGetMacro(CompressionLevel, int);
//@}
protected:
vtkZLibDataCompressor();
~vtkZLibDataCompressor() VTK_OVERRIDE;
int CompressionLevel;
// Compression method required by vtkDataCompressor.
size_t CompressBuffer(unsigned char const* uncompressedData,
size_t uncompressedSize,
unsigned char* compressedData,
size_t compressionSpace) VTK_OVERRIDE;
// Decompression method required by vtkDataCompressor.
size_t UncompressBuffer(unsigned char const* compressedData,
size_t compressedSize,
unsigned char* uncompressedData,
size_t uncompressedSize) VTK_OVERRIDE;
private:
vtkZLibDataCompressor(const vtkZLibDataCompressor&) VTK_DELETE_FUNCTION;
void operator=(const vtkZLibDataCompressor&) VTK_DELETE_FUNCTION;
};
#endif
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