/usr/include/claw/rle_decoder.hpp is in libclaw-dev 1.7.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | /*
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
*/
/**
* \file rle_decoder.hpp
* \brief A class to help decoding run-length encoded (RLE) streams.
* \author Julien Jorge
*/
#ifndef __CLAW_RLE_DECODER_HPP__
#define __CLAW_RLE_DECODER_HPP__
namespace claw
{
/**
* \brief A class to help decoding run-length encoded (RLE) streams.
*
*\b Template \b parameters :
* - \a Pattern The type of the patterns in the coded stream,
* - \a InputBuffer The type of the input buffer,
* - \a OutputBuffer The type of the output buffer.
*
* The \a Pattern and \a InputBuffer parameters don't have any type
* requirement.
*
* The \a OutputBuffer type must have the following methods :
* - fill( unsigned int n, Pattern pattern ), copy n times the pattern,
* - copy( unsigned int n, InputBuffer input ), copy n patterns directly from
* the input buffer.
*
* \author Julien Jorge
*/
template< typename Pattern, typename InputBuffer, typename OutputBuffer >
class rle_decoder
{
public:
/** \brief The type of the patterns we will read in the input buffer. */
typedef Pattern pattern_type;
/** \brief The type of the input buffer. */
typedef InputBuffer input_buffer_type;
/** \brief The type of the output buffer. */
typedef OutputBuffer output_buffer_type;
protected:
/**
* \brief State of the decompression.
*/
enum mode
{
/** \brief Stop the decoding. */
stop,
/** \brief Next bytes represent raw data. */
raw,
/** \brief Next bytes represent compressed data. */
compressed
}; // enum mode
public:
rle_decoder();
virtual ~rle_decoder();
void decode( input_buffer_type& input, output_buffer_type& output );
protected:
virtual void read_mode( input_buffer_type& input,
output_buffer_type& output ) = 0;
protected:
/** \brief Current mode of the decompression. */
mode m_mode;
/**
* \brief Case of m_mode :
* - m_mode == raw : The number of the next raw patterns,
* - m_mode == compressed : How many times the pattern is repeated.
*/
unsigned int m_count;
/** \brief The pattern to repeat. */
pattern_type m_pattern;
}; // class rle_decoder
} // namespace claw
#include <claw/impl/rle_decoder.tpp>
#endif // __CLAW_RLE_DECODER_HPP__
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