|
VTK
|
00001 /*========================================================================= 00002 00003 Program: Visualization Toolkit 00004 Module: vtkDataCompressor.h 00005 00006 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen 00007 All rights reserved. 00008 See Copyright.txt or http://www.kitware.com/Copyright.htm for details. 00009 00010 This software is distributed WITHOUT ANY WARRANTY; without even 00011 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00012 PURPOSE. See the above copyright notice for more information. 00013 00014 =========================================================================*/ 00024 #ifndef __vtkDataCompressor_h 00025 #define __vtkDataCompressor_h 00026 00027 #include "vtkObject.h" 00028 00029 class vtkUnsignedCharArray; 00030 00031 class VTK_IO_EXPORT vtkDataCompressor : public vtkObject 00032 { 00033 public: 00034 vtkTypeMacro(vtkDataCompressor,vtkObject); 00035 void PrintSelf(ostream& os, vtkIndent indent); 00036 00041 virtual unsigned long GetMaximumCompressionSpace(unsigned long size)=0; 00042 00044 00047 unsigned long Compress(const unsigned char* uncompressedData, 00048 unsigned long uncompressedSize, 00049 unsigned char* compressedData, 00050 unsigned long compressionSpace); 00052 00054 00057 unsigned long Uncompress(const unsigned char* compressedData, 00058 unsigned long compressedSize, 00059 unsigned char* uncompressedData, 00060 unsigned long uncompressedSize); 00062 00064 00066 vtkUnsignedCharArray* Compress(const unsigned char* uncompressedData, 00067 unsigned long uncompressedSize); 00069 00071 00075 vtkUnsignedCharArray* Uncompress(const unsigned char* compressedData, 00076 unsigned long compressedSize, 00077 unsigned long uncompressedSize); 00078 protected: 00079 vtkDataCompressor(); 00080 ~vtkDataCompressor(); 00082 00083 // Actual compression method. This must be provided by a subclass. 00084 // Must return the size of the compressed data, or zero on error. 00085 virtual unsigned long CompressBuffer(const unsigned char* uncompressedData, 00086 unsigned long uncompressedSize, 00087 unsigned char* compressedData, 00088 unsigned long compressionSpace)=0; 00089 // Actual decompression method. This must be provided by a subclass. 00090 // Must return the size of the uncompressed data, or zero on error. 00091 virtual unsigned long UncompressBuffer(const unsigned char* compressedData, 00092 unsigned long compressedSize, 00093 unsigned char* uncompressedData, 00094 unsigned long uncompressedSize)=0; 00095 private: 00096 vtkDataCompressor(const vtkDataCompressor&); // Not implemented. 00097 void operator=(const vtkDataCompressor&); // Not implemented. 00098 }; 00099 00100 #endif
1.7.5.1