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61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/// \file
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/// \brief \b [Internal] Creates instances of the class HuffmanEncodingTree
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///
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/// This file is part of RakNet Copyright 2003 Kevin Jenkins.
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///
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/// Usage of RakNet is subject to the appropriate license agreement.
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/// Creative Commons Licensees are subject to the
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/// license found at
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/// http://creativecommons.org/licenses/by-nc/2.5/
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/// Single application licensees are subject to the license found at
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/// http://www.rakkarsoft.com/SingleApplicationLicense.html
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/// Custom license users are subject to the terms therein.
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/// GPL license users are subject to the GNU General Public
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/// License as published by the Free
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/// Software Foundation; either version 2 of the License, or (at your
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/// option) any later version.
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#ifndef __HUFFMAN_ENCODING_TREE_FACTORY
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#define __HUFFMAN_ENCODING_TREE_FACTORY
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class HuffmanEncodingTree;
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/// \brief Creates instances of the class HuffmanEncodingTree
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///
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/// This class takes a frequency table and given that frequence table, will generate an instance of HuffmanEncodingTree
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class HuffmanEncodingTreeFactory
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{
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public:
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/// Default constructor
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HuffmanEncodingTreeFactory();
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/// Reset the frequency table. You don't need to call this unless you want to reuse the class for a new tree
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void Reset( void );
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/// Pass an array of bytes to this to add those elements to the frequency table
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/// \param[in] array the data to insert into the frequency table
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/// \param[in] size the size of the data to insert
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void AddToFrequencyTable( unsigned char *array, int size );
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/// Copies the frequency table to the array passed
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/// Retrieve the frequency table
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/// \param[in] _frequency The frequency table used currently
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void GetFrequencyTable( unsigned int _frequency[ 256 ] );
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/// Returns the frequency table as a pointer
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/// \return the address of the frenquency table
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unsigned int * GetFrequencyTable( void );
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/// Generate a HuffmanEncodingTree.
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/// You can also use GetFrequencyTable and GenerateFromFrequencyTable in the tree itself
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/// \return The generated instance of HuffmanEncodingTree
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HuffmanEncodingTree * GenerateTree( void );
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private:
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/// Frequency table
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unsigned int frequency[ 256 ];
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};
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#endif
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