Why Gemfury?
Push, build, and install
RubyGems
npm packages
Python packages
Maven artifacts
PHP packages
Go Modules
Debian packages
RPM packages
NuGet packages
showbox-public-14
showbox-public-14 / ffmpeg-doc deb
Repository URL to install this package:
|
Version:
8:3.0.2-1ubuntu3 ▾
|
<!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 1.8.6"/>
<title>FFmpeg: libavutil/eval.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/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</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">FFmpeg
 <span id="projectnumber">3.0.2</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.6 -->
<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="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</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>Globals</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)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Pages</a></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_8d855866ba5d436d839c7fc557836cd9.html">libavutil</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">eval.h</div> </div>
</div><!--header-->
<div class="contents">
<a href="eval_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at></span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This file is part of FFmpeg.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> */</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> <span class="comment">/**</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * @file</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * simple arithmetic expression evaluator</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</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="preprocessor">#ifndef AVUTIL_EVAL_H</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_EVAL_H</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="avutil_8h.html">avutil.h</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8"> 31</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a> <a class="code" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a>;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * Parse and evaluate an expression.</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * Note, this is significantly slower than av_expr_eval().</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> <span class="comment"> * @param res a pointer to a double where is put the result value of</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * the expression, or NAN in case of error</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * @param const_values a zero terminated array of values for the identifiers from const_names</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * @param funcs1 NULL terminated array of function pointers for functions which take 1 argument</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * @param opaque a pointer which will be passed to all functions from funcs1 and funcs2</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * @param log_ctx parent logging context</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * @return >= 0 in case of success, a negative value corresponding to an</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * AVERROR code otherwise</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keywordtype">int</span> <a class="code" href="eval_8h.html#a2d19271d518d49f3cb2df8c347856b18">av_expr_parse_and_eval</a>(<span class="keywordtype">double</span> *res, <span class="keyword">const</span> <span class="keywordtype">char</span> *s,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *const_names, <span class="keyword">const</span> <span class="keywordtype">double</span> *const_values,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *func1_names, <span class="keywordtype">double</span> (* <span class="keyword">const</span> *funcs1)(<span class="keywordtype">void</span> *, <span class="keywordtype">double</span>),</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *func2_names, <span class="keywordtype">double</span> (* <span class="keyword">const</span> *funcs2)(<span class="keywordtype">void</span> *, <span class="keywordtype">double</span>, <span class="keywordtype">double</span>),</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> *opaque, <span class="keywordtype">int</span> log_offset, <span class="keywordtype">void</span> *log_ctx);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * Parse an expression.</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * @param expr a pointer where is put an AVExpr containing the parsed</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * value in case of successful parsing, or NULL otherwise.</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * The pointed to AVExpr must be freed with av_expr_free() by the user</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * when it is not needed anymore.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * @param funcs1 NULL terminated array of function pointers for functions which take 1 argument</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * @param log_ctx parent logging context</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * @return >= 0 in case of success, a negative value corresponding to an</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * AVERROR code otherwise</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">int</span> <a class="code" href="eval_8h.html#ad3bf8f3330d1fd139de2ca156c313f34">av_expr_parse</a>(<a class="code" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a> **expr, <span class="keyword">const</span> <span class="keywordtype">char</span> *s,</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *const_names,</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *func1_names, <span class="keywordtype">double</span> (* <span class="keyword">const</span> *funcs1)(<span class="keywordtype">void</span> *, <span class="keywordtype">double</span>),</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> *func2_names, <span class="keywordtype">double</span> (* <span class="keyword">const</span> *funcs2)(<span class="keywordtype">void</span> *, <span class="keywordtype">double</span>, <span class="keywordtype">double</span>),</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">int</span> log_offset, <span class="keywordtype">void</span> *log_ctx);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"></span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> * Evaluate a previously parsed expression.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * @param const_values a zero terminated array of values for the identifiers from av_expr_parse() const_names</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * @param opaque a pointer which will be passed to all functions from funcs1 and funcs2</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * @return the value of the expression</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">double</span> <a class="code" href="eval_8h.html#a569b6171b99e02f899d9ba8b5545cc27">av_expr_eval</a>(<a class="code" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a> *e, <span class="keyword">const</span> <span class="keywordtype">double</span> *const_values, <span class="keywordtype">void</span> *opaque);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * Free a parsed expression previously created with av_expr_parse().</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keywordtype">void</span> <a class="code" href="eval_8h.html#a01c05d7049a9208c2b22147a3f16c58c">av_expr_free</a>(<a class="code" href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a> *e);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * Parse the string in numstr and return its value as a double. If</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * the string is empty, contains only whitespaces, or does not contain</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * an initial substring that has the expected syntax for a</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * floating-point number, no conversion is performed. In this case,</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * returns a value of zero and the value returned in tail is the value</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * of numstr.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> * @param numstr a string representing a number, may contain one of</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> * the International System number postfixes, for example 'K', 'M',</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * 'G'. If 'i' is appended after the postfix, powers of 2 are used</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * instead of powers of 10. The 'B' postfix multiplies the value by</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * 8, and can be appended after another postfix or used alone. This</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> * allows using for example 'KB', 'MiB', 'G' and 'B' as postfix.</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> * @param tail if non-NULL puts here the pointer to the char next</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> * after the last parsed character</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">double</span> <a class="code" href="eval_8h.html#a7d21905c92ee5af0bb529d2daf8cb7c3">av_strtod</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *numstr, <span class="keywordtype">char</span> **tail);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_EVAL_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="avutil_8h_html"><div class="ttname"><a href="avutil_8h.html">avutil.h</a></div><div class="ttdoc">external API header </div></div>
<div class="ttc" id="eval_8h_html_a01c05d7049a9208c2b22147a3f16c58c"><div class="ttname"><a href="eval_8h.html#a01c05d7049a9208c2b22147a3f16c58c">av_expr_free</a></div><div class="ttdeci">void av_expr_free(AVExpr *e)</div><div class="ttdoc">Free a parsed expression previously created with av_expr_parse(). </div></div>
<div class="ttc" id="eval_8h_html_ad3bf8f3330d1fd139de2ca156c313f34"><div class="ttname"><a href="eval_8h.html#ad3bf8f3330d1fd139de2ca156c313f34">av_expr_parse</a></div><div class="ttdeci">int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)</div><div class="ttdoc">Parse an expression. </div></div>
<div class="ttc" id="eval_8h_html_a2d19271d518d49f3cb2df8c347856b18"><div class="ttname"><a href="eval_8h.html#a2d19271d518d49f3cb2df8c347856b18">av_expr_parse_and_eval</a></div><div class="ttdeci">int av_expr_parse_and_eval(double *res, const char *s, const char *const *const_names, const double *const_values, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), void *opaque, int log_offset, void *log_ctx)</div><div class="ttdoc">Parse and evaluate an expression. </div></div>
<div class="ttc" id="eval_8h_html_a569b6171b99e02f899d9ba8b5545cc27"><div class="ttname"><a href="eval_8h.html#a569b6171b99e02f899d9ba8b5545cc27">av_expr_eval</a></div><div class="ttdeci">double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)</div><div class="ttdoc">Evaluate a previously parsed expression. </div></div>
<div class="ttc" id="eval_8h_html_a7d21905c92ee5af0bb529d2daf8cb7c3"><div class="ttname"><a href="eval_8h.html#a7d21905c92ee5af0bb529d2daf8cb7c3">av_strtod</a></div><div class="ttdeci">double av_strtod(const char *numstr, char **tail)</div><div class="ttdoc">Parse the string in numstr and return its value as a double. </div></div>
<div class="ttc" id="eval_8h_html_ac09a495d176de152a38347ca8ba069a8"><div class="ttname"><a href="eval_8h.html#ac09a495d176de152a38347ca8ba069a8">AVExpr</a></div><div class="ttdeci">struct AVExpr AVExpr</div><div class="ttdef"><b>Definition:</b> <a href="eval_8h_source.html#l00031">eval.h:31</a></div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.6
</small></address>
</body>
</html>