claw 1.9.0
 
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lzw_decoder.hpp
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1/*
2 CLAW - a C++ Library Absolutely Wonderful
3
4 CLAW is a free library without any particular aim but being useful to
5 anyone.
6
7 Copyright (C) 2005-2011 Julien Jorge
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22
23 contact: julien.jorge@stuff-o-matic.com
24*/
31#ifndef __CLAW_LZW_DECODER_HPP__
32#define __CLAW_LZW_DECODER_HPP__
33
34#include <utility>
35#include <vector>
36
37namespace claw
38{
61 template <typename InputBuffer, typename OutputBuffer>
63 {
64 public:
66 typedef InputBuffer input_buffer_type;
67
69 typedef OutputBuffer output_buffer_type;
70
71 private:
72 typedef std::pair<unsigned int, unsigned int> word_type;
73 typedef std::vector<word_type> table_type;
74
75 public:
76 void decode(input_buffer_type& input, output_buffer_type& output);
77
78 private:
79 unsigned int get_first_symbol(const table_type& table,
80 const unsigned int code,
81 const unsigned int symbols_count) const;
82
83 void decompose(const table_type& table, unsigned int code,
84 const unsigned int symbols_count,
85 output_buffer_type& output) const;
86
87 }; // class lzw_decoder
88}
89
90#include <claw/lzw_decoder.tpp>
91
92#endif // __CLAW_LZW_DECODER_HPP__
A class to help decoding a stream encoded with Lempel-Ziv-Welch (LZW) compression algorithm.
OutputBuffer output_buffer_type
The type of the output buffer.
InputBuffer input_buffer_type
The type of the input buffer.
This is the main namespace.