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74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkZLibDataCompressor.h
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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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/**
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* @class vtkZLibDataCompressor
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* @brief Data compression using zlib.
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*
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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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*/
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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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#include "vtkIOCoreModule.h" // For export macro
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class VTKIOCORE_EXPORT vtkZLibDataCompressor : public vtkDataCompressor
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{
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public:
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vtkTypeMacro(vtkZLibDataCompressor, vtkDataCompressor);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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static vtkZLibDataCompressor* New();
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/**
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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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*/
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size_t GetMaximumCompressionSpace(size_t size) override;
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//@{
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/**
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* Get/Set the compression level.
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*/
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// Compression level getter required by vtkDataCompressor.
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int GetCompressionLevel() override;
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// Compression level setter required by vtkDataCompresor.
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void SetCompressionLevel(int compressionLevel) override;
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//@}
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protected:
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vtkZLibDataCompressor();
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~vtkZLibDataCompressor() override;
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int CompressionLevel;
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// Compression method required by vtkDataCompressor.
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size_t CompressBuffer(unsigned char const* uncompressedData, size_t uncompressedSize,
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unsigned char* compressedData, size_t compressionSpace) override;
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// Decompression method required by vtkDataCompressor.
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size_t UncompressBuffer(unsigned char const* compressedData, size_t compressedSize,
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unsigned char* uncompressedData, size_t uncompressedSize) override;
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private:
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vtkZLibDataCompressor(const vtkZLibDataCompressor&) = delete;
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void operator=(const vtkZLibDataCompressor&) = delete;
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};
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#endif
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