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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.
=========================================================================*/
// .NAME vtkLZ4DataCompressor - Data compression using zlib.
// .SECTION Description
// vtkLZ4DataCompressor provides a concrete vtkDataCompressor class
// using LZ4 for compressing and uncompressing data.
#ifndef vtkLZ4DataCompressor_h
#define vtkLZ4DataCompressor_h
#include "vtkIOCoreModule.h" // For export macro
#include "vtkDataCompressor.h"
class VTKIOCORE_EXPORT vtkLZ4DataCompressor : public vtkDataCompressor
{
public:
vtkTypeMacro(vtkLZ4DataCompressor,vtkDataCompressor);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
static vtkLZ4DataCompressor* New();
// Description:
// 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;
// Description:
// Get/Set the compression level.
vtkSetClampMacro(AccelerationLevel, int, 1, VTK_INT_MAX);
vtkGetMacro(AccelerationLevel, int);
protected:
vtkLZ4DataCompressor();
~vtkLZ4DataCompressor() VTK_OVERRIDE;
int AccelerationLevel;
// 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:
vtkLZ4DataCompressor(const vtkLZ4DataCompressor&) VTK_DELETE_FUNCTION;
void operator=(const vtkLZ4DataCompressor&) VTK_DELETE_FUNCTION;
};
#endif
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