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65 lines
2.4 KiB
65 lines
2.4 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkZLibDataCompressor.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkZLibDataCompressor - Data compression using zlib.
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// .SECTION Description
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// vtkZLibDataCompressor provides a concrete vtkDataCompressor class
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// using zlib for compressing and uncompressing data.
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#ifndef __vtkZLibDataCompressor_h
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#define __vtkZLibDataCompressor_h
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#include "vtkDataCompressor.h"
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class VTK_IO_EXPORT vtkZLibDataCompressor : public vtkDataCompressor
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{
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public:
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vtkTypeRevisionMacro(vtkZLibDataCompressor,vtkDataCompressor);
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void PrintSelf(ostream& os, vtkIndent indent);
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static vtkZLibDataCompressor* New();
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// Description:
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// Get the maximum space that may be needed to store data of the
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// given uncompressed size after compression. This is the minimum
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// size of the output buffer that can be passed to the four-argument
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// Compress method.
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unsigned long GetMaximumCompressionSpace(unsigned long size);
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// Description:
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// Get/Set the compression level.
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vtkSetClampMacro(CompressionLevel, int, 0, 9);
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vtkGetMacro(CompressionLevel, int);
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protected:
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vtkZLibDataCompressor();
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~vtkZLibDataCompressor();
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int CompressionLevel;
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// Compression method required by vtkDataCompressor.
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unsigned long CompressBuffer(const unsigned char* uncompressedData,
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unsigned long uncompressedSize,
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unsigned char* compressedData,
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unsigned long compressionSpace);
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// Decompression method required by vtkDataCompressor.
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unsigned long UncompressBuffer(const unsigned char* compressedData,
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unsigned long compressedSize,
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unsigned char* uncompressedData,
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unsigned long uncompressedSize);
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private:
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vtkZLibDataCompressor(const vtkZLibDataCompressor&); // Not implemented.
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void operator=(const vtkZLibDataCompressor&); // Not implemented.
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};
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#endif
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