lzw_decoder.hpp
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/*
CLAW - a C++ Library Absolutely Wonderful
CLAW is a free library without any particular aim but being useful to
anyone.
Copyright (C) 2005-2011 Julien Jorge
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
contact: julien.jorge@gamned.org
*/
#ifndef __CLAW_LZW_DECODER_HPP__
#define __CLAW_LZW_DECODER_HPP__
#include <vector>
#include <utility>
namespace claw
{
template<typename InputBuffer, typename OutputBuffer>
class lzw_decoder
{
public:
typedef InputBuffer input_buffer_type;
typedef OutputBuffer output_buffer_type;
private:
typedef std::pair<unsigned int, unsigned int> word_type;
typedef std::vector<word_type> table_type;
public:
void decode( input_buffer_type& input, output_buffer_type& output );
private:
unsigned int get_first_symbol
( const table_type& table, const unsigned int code,
const unsigned int symbols_count ) const;
void decompose
( const table_type& table, unsigned int code,
const unsigned int symbols_count, output_buffer_type& output ) const;
}; // class lzw_decoder
} // namespace claw
#include <claw/impl/lzw_decoder.tpp>
#endif // __CLAW_LZW_DECODER_HPP__
claw::lzw_decoder
A class to help decoding a stream encoded with Lempel-Ziv-Welch (LZW) compression algorithm.
Definition lzw_decoder.hpp:62
claw::lzw_decoder< input_buffer, output_buffer >::output_buffer_type
output_buffer output_buffer_type
Definition lzw_decoder.hpp:68
claw::lzw_decoder< input_buffer, output_buffer >::input_buffer_type
input_buffer input_buffer_type
Definition lzw_decoder.hpp:65
claw
This is the main namespace.
Definition algorithm.hpp:34