vtkZLibDataCompressor.h

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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.

=========================================================================*/
#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);
  static vtkZLibDataCompressor* New();

  size_t GetMaximumCompressionSpace(size_t size);


  vtkSetClampMacro(CompressionLevel, int, 0, 9);
  vtkGetMacro(CompressionLevel, int);

protected:
  vtkZLibDataCompressor();
  ~vtkZLibDataCompressor();

  int CompressionLevel;

  // Compression method required by vtkDataCompressor.
  size_t CompressBuffer(unsigned char const* uncompressedData,
                        size_t uncompressedSize,
                        unsigned char* compressedData,
                        size_t compressionSpace);
  // Decompression method required by vtkDataCompressor.
  size_t UncompressBuffer(unsigned char const* compressedData,
                          size_t compressedSize,
                          unsigned char* uncompressedData,
                          size_t uncompressedSize);
private:
  vtkZLibDataCompressor(const vtkZLibDataCompressor&);  // Not implemented.
  void operator=(const vtkZLibDataCompressor&);  // Not implemented.
};

#endif