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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkZLibDataCompressor.h,v $
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 vtkZLibDataCompressor - Data compression using zlib.
// .SECTION Description
// vtkZLibDataCompressor provides a concrete vtkDataCompressor class
// using zlib for compressing and uncompressing data.
#ifndef __vtkZLibDataCompressor_h
#define __vtkZLibDataCompressor_h
#include "vtkDataCompressor.h"
class VTK_IO_EXPORT vtkZLibDataCompressor : public vtkDataCompressor
{
public:
vtkTypeRevisionMacro(vtkZLibDataCompressor,vtkDataCompressor);
void PrintSelf(ostream& os, vtkIndent indent);
static vtkZLibDataCompressor* 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.
unsigned long GetMaximumCompressionSpace(unsigned long size);
// Description:
// Get/Set the compression level.
vtkSetClampMacro(CompressionLevel, int, 0, 9);
vtkGetMacro(CompressionLevel, int);
protected:
vtkZLibDataCompressor();
~vtkZLibDataCompressor();
int CompressionLevel;
// Compression method required by vtkDataCompressor.
unsigned long CompressBuffer(const unsigned char* uncompressedData,
unsigned long uncompressedSize,
unsigned char* compressedData,
unsigned long compressionSpace);
// Decompression method required by vtkDataCompressor.
unsigned long UncompressBuffer(const unsigned char* compressedData,
unsigned long compressedSize,
unsigned char* uncompressedData,
unsigned long uncompressedSize);
private:
vtkZLibDataCompressor(const vtkZLibDataCompressor&); // Not implemented.
void operator=(const vtkZLibDataCompressor&); // Not implemented.
};
#endif
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