<!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 1.8.11"/>
<title>FGx: src/utilities/zlib/inftrees.h 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="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { init_search(); });
</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 id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">FGx
 <span id="projectnumber">1</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.11 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<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="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>File Members</span></a></li>
</ul>
</div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_7b5d38f1875f1b693f62ca6a108a1129.html">utilities</a></li><li class="navelem"><a class="el" href="dir_fe6a68eee28cd4c65df4049e5df14c5b.html">zlib</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">inftrees.h</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">/* inftrees.h -- header to use inftrees.c</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (C) 1995-2005, 2010 Mark Adler</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * For conditions of distribution and use, see copyright notice in zlib.h</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> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">/* WARNING: this file should *not* be used by applications. It is</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> part of the implementation of the compression library and is</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> subject to change. Applications should only use zlib.h.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> */</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">/* Structure for decoding tables. Each entry provides either the</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> information needed to do the operation requested by the code that</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> indexed that table entry, or it provides a pointer to another</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> table that indexes more bits of the code. op indicates whether</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> the entry is a pointer to another table, a literal, a length or</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> distance, an end-of-block, or an invalid code. For a table</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> pointer, the low four bits of op is the number of index bits of</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> that table. For a length or distance, the low four bits of op</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> is the number of extra bits to get after the code. bits is</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> the number of bits in this code or part of the code to drop off</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> of the bit buffer. val is the actual byte to output in the case</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> of a literal, the base length or distance, or the offset from</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> the current table to the next table. Each entry is four bytes. */</span></div><div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="structcode.html"> 24</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span>{</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> op; <span class="comment">/* operation, extra bits, table bits */</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> bits; <span class="comment">/* bits in this part of the code */</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> val; <span class="comment">/* offset in table or code value */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> } <a class="code" href="structcode.html">code</a>;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">/* op values as set by inflate_table():</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> 00000000 - literal</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> 0000tttt - table link, tttt != 0 is the number of table index bits</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> 0001eeee - length or distance, eeee is the number of extra bits</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> 01100000 - end of block</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> 01000000 - invalid code</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</span></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> <span class="comment">/* Maximum size of the dynamic table. The maximum number of code structures is</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> 1444, which is the sum of 852 for literal/length codes and 592 for distance</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> codes. These values were found by exhaustive searches using the program</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> examples/enough.c found in the zlib distribtution. The arguments to that</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> program are the number of symbols, the initial root table size, and the</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> maximum bit length of a code. "enough 286 9 15" for literal/length codes</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> returns returns 852, and "enough 30 6 15" for distance codes returns 592.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> The initial root table size (9 or 6) is found in the fifth argument of the</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> inflate_table() calls in inflate.c and infback.c. If the root table size is</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> changed, then these maximum sizes would be need to be recalculated and</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> updated. */</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#define ENOUGH_LENS 852</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#define ENOUGH_DISTS 592</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">/* Type of code to build for inflate_table() */</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">typedef</span> <span class="keyword">enum</span> {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  CODES,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  LENS,</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  DISTS</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> } codetype;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">int</span> ZLIB_INTERNAL inflate_table OF((codetype type, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> FAR *lens,</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">unsigned</span> codes, <a class="code" href="structcode.html">code</a> FAR * FAR *table,</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">unsigned</span> FAR *bits, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> FAR *work));</div><div class="ttc" id="structcode_html"><div class="ttname"><a href="structcode.html">code</a></div><div class="ttdef"><b>Definition:</b> inftrees.h:24</div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu Feb 4 2016 13:59:23 for FGx by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.11
</small></address>
</body>
</html>
distrib
>
Mageia
>
6
>
armv5tl
>
media
>
core-release
>
by-pkgid
>
004fd8e0018ea6f0df74e9703299ee08
>
files
>
284
