<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.8"/> <title>libopenraw: lib/huffman.cpp Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">libopenraw </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.8 --> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_97aefd0d527b934f1d99a682da8fe6a9.html">lib</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">huffman.cpp</div> </div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* -*- tab-width:4; c-basic-offset:4 -*- */</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * libopenraw - huffman.cpp</span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Copyright (C) 2008 Rafael Avila de Espindola.</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * This library is free software: you can redistribute it and/or</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public License</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * as published by the Free Software Foundation, either version 3 of</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * the License, or (at your option) any later version.</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * This library is distributed in the hope that it will be useful,</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * Lesser General Public License for more details.</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * License along with this library. If not, see</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * <http://www.gnu.org/licenses/>.</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <string></span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <iostream></span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "huffman.h"</span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span><a class="code" href="namespaceOpenRaw.html">OpenRaw</a> {</div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>Internals {</div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keywordtype">void</span> HuffmanDecoder::printTable_(std::string prefix, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pos)<span class="keyword"> const</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword"></span>{</div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">const</span> HuffmanNode &cur = m_p[pos];</div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">if</span> (cur.isLeaf) {</div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  std::cerr << prefix << <span class="stringliteral">" "</span> << cur.data << <span class="stringliteral">"\n"</span>;</div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  } <span class="keywordflow">else</span> {</div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  printTable_(prefix + <span class="stringliteral">"0"</span>, pos + 1);</div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  printTable_(prefix + <span class="stringliteral">"1"</span>, cur.data);</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  }</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> }</div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> HuffmanDecoder::HuffmanDecoder(<span class="keyword">const</span> HuffmanNode* <span class="keyword">const</span> p) : m_p(p)</div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {</div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">void</span> HuffmanDecoder::printTable()<span class="keyword"> const</span></div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword"></span>{</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  printTable_(<span class="stringliteral">""</span>, 0);</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> }</div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> HuffmanDecoder::decode(BitIterator& i)</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">int</span> cur = 0;</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">while</span> (!m_p[cur].isLeaf) {</div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bit = i.get(1);</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (bit)</div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  cur = m_p[cur].data;</div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">else</span></div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  cur = cur + 1;</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> m_p[cur].data;</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> }</div> <div class="ttc" id="namespaceOpenRaw_html"><div class="ttname"><a href="namespaceOpenRaw.html">OpenRaw</a></div><div class="ttdoc">CIFF is the container for CRW files. It is an attempt from Canon to make this a standard. I guess it failed. </div><div class="ttdef"><b>Definition:</b> <a href="arwfile_8cpp_source.html#l00033">arwfile.cpp:33</a></div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated on Fri Oct 17 2014 20:21:10 for libopenraw by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.8 </small></address> </body> </html>