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 / ffmpeg-doc deb
Repository URL to install this package:
|
Version:
7:2.7.1-1ubuntu2 ▾
|
<!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"/>
<title>FFmpeg: libavutil/imgutils.h Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
</head>
<body>
<div id="top"><!-- do not remove this div! -->
<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">2.7.1</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Generated by Doxygen 1.7.6.1 -->
<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>
</div>
<div class="header">
<div class="headertitle">
<div class="title">libavutil/imgutils.h</div> </div>
</div><!--header-->
<div class="contents">
<a href="imgutils_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * This file is part of FFmpeg.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00015"></a>00015 <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span>
<a name="l00016"></a>00016 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00017"></a>00017 <span class="comment"> */</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef AVUTIL_IMGUTILS_H</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_IMGUTILS_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment">/**</span>
<a name="l00023"></a>00023 <span class="comment"> * @file</span>
<a name="l00024"></a>00024 <span class="comment"> * misc image utilities</span>
<a name="l00025"></a>00025 <span class="comment"> *</span>
<a name="l00026"></a>00026 <span class="comment"> * @addtogroup lavu_picture</span>
<a name="l00027"></a>00027 <span class="comment"> * @{</span>
<a name="l00028"></a>00028 <span class="comment"> */</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="avutil_8h.html" title="external API header">avutil.h</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="pixdesc_8h.html">pixdesc.h</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="rational_8h.html" title="rational numbers">rational.h</a>"</span>
<a name="l00033"></a>00033 <span class="comment"></span>
<a name="l00034"></a>00034 <span class="comment">/**</span>
<a name="l00035"></a>00035 <span class="comment"> * Compute the max pixel step for each plane of an image with a</span>
<a name="l00036"></a>00036 <span class="comment"> * format described by pixdesc.</span>
<a name="l00037"></a>00037 <span class="comment"> *</span>
<a name="l00038"></a>00038 <span class="comment"> * The pixel step is the distance in bytes between the first byte of</span>
<a name="l00039"></a>00039 <span class="comment"> * the group of bytes which describe a pixel component and the first</span>
<a name="l00040"></a>00040 <span class="comment"> * byte of the successive group in the same plane for the same</span>
<a name="l00041"></a>00041 <span class="comment"> * component.</span>
<a name="l00042"></a>00042 <span class="comment"> *</span>
<a name="l00043"></a>00043 <span class="comment"> * @param max_pixsteps an array which is filled with the max pixel step</span>
<a name="l00044"></a>00044 <span class="comment"> * for each plane. Since a plane may contain different pixel</span>
<a name="l00045"></a>00045 <span class="comment"> * components, the computed max_pixsteps[plane] is relative to the</span>
<a name="l00046"></a>00046 <span class="comment"> * component in the plane with the max pixel step.</span>
<a name="l00047"></a>00047 <span class="comment"> * @param max_pixstep_comps an array which is filled with the component</span>
<a name="l00048"></a>00048 <span class="comment"> * for each plane which has the max pixel step. May be NULL.</span>
<a name="l00049"></a>00049 <span class="comment"> */</span>
<a name="l00050"></a>00050 <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#gad3af84de3a86a9ebb71715e3c0ebf627" title="Compute the max pixel step for each plane of an image with a format described by pixdesc.">av_image_fill_max_pixsteps</a>(<span class="keywordtype">int</span> max_pixsteps[4], <span class="keywordtype">int</span> max_pixstep_comps[4],
<a name="l00051"></a>00051 <span class="keyword">const</span> <a class="code" href="structAVPixFmtDescriptor.html" title="Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...">AVPixFmtDescriptor</a> *pixdesc);
<a name="l00052"></a>00052 <span class="comment"></span>
<a name="l00053"></a>00053 <span class="comment">/**</span>
<a name="l00054"></a>00054 <span class="comment"> * Compute the size of an image line with format pix_fmt and width</span>
<a name="l00055"></a>00055 <span class="comment"> * width for the plane plane.</span>
<a name="l00056"></a>00056 <span class="comment"> *</span>
<a name="l00057"></a>00057 <span class="comment"> * @return the computed size in bytes</span>
<a name="l00058"></a>00058 <span class="comment"> */</span>
<a name="l00059"></a>00059 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga8eddd074d5eb6a235591013675ac1055" title="Compute the size of an image line with format pix_fmt and width width for the plane plane...">av_image_get_linesize</a>(<span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> plane);
<a name="l00060"></a>00060 <span class="comment"></span>
<a name="l00061"></a>00061 <span class="comment">/**</span>
<a name="l00062"></a>00062 <span class="comment"> * Fill plane linesizes for an image with pixel format pix_fmt and</span>
<a name="l00063"></a>00063 <span class="comment"> * width width.</span>
<a name="l00064"></a>00064 <span class="comment"> *</span>
<a name="l00065"></a>00065 <span class="comment"> * @param linesizes array to be filled with the linesize for each plane</span>
<a name="l00066"></a>00066 <span class="comment"> * @return >= 0 in case of success, a negative error code otherwise</span>
<a name="l00067"></a>00067 <span class="comment"> */</span>
<a name="l00068"></a>00068 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#gaccd7fda79188060dadb28408223946ef" title="Fill plane linesizes for an image with pixel format pix_fmt and width width.">av_image_fill_linesizes</a>(<span class="keywordtype">int</span> linesizes[4], <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>);
<a name="l00069"></a>00069 <span class="comment"></span>
<a name="l00070"></a>00070 <span class="comment">/**</span>
<a name="l00071"></a>00071 <span class="comment"> * Fill plane data pointers for an image with pixel format pix_fmt and</span>
<a name="l00072"></a>00072 <span class="comment"> * height height.</span>
<a name="l00073"></a>00073 <span class="comment"> *</span>
<a name="l00074"></a>00074 <span class="comment"> * @param data pointers array to be filled with the pointer for each image plane</span>
<a name="l00075"></a>00075 <span class="comment"> * @param ptr the pointer to a buffer which will contain the image</span>
<a name="l00076"></a>00076 <span class="comment"> * @param linesizes the array containing the linesize for each</span>
<a name="l00077"></a>00077 <span class="comment"> * plane, should be filled by av_image_fill_linesizes()</span>
<a name="l00078"></a>00078 <span class="comment"> * @return the size in bytes required for the image buffer, a negative</span>
<a name="l00079"></a>00079 <span class="comment"> * error code in case of failure</span>
<a name="l00080"></a>00080 <span class="comment"> */</span>
<a name="l00081"></a>00081 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga4513d36f527c1476e89845631d975542" title="Fill plane data pointers for an image with pixel format pix_fmt and height height.">av_image_fill_pointers</a>(uint8_t *data[4], <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>,
<a name="l00082"></a>00082 uint8_t *ptr, <span class="keyword">const</span> <span class="keywordtype">int</span> linesizes[4]);
<a name="l00083"></a>00083 <span class="comment"></span>
<a name="l00084"></a>00084 <span class="comment">/**</span>
<a name="l00085"></a>00085 <span class="comment"> * Allocate an image with size w and h and pixel format pix_fmt, and</span>
<a name="l00086"></a>00086 <span class="comment"> * fill pointers and linesizes accordingly.</span>
<a name="l00087"></a>00087 <span class="comment"> * The allocated image buffer has to be freed by using</span>
<a name="l00088"></a>00088 <span class="comment"> * av_freep(&pointers[0]).</span>
<a name="l00089"></a>00089 <span class="comment"> *</span>
<a name="l00090"></a>00090 <span class="comment"> * @param align the value to use for buffer size alignment</span>
<a name="l00091"></a>00091 <span class="comment"> * @return the size in bytes required for the image buffer, a negative</span>
<a name="l00092"></a>00092 <span class="comment"> * error code in case of failure</span>
<a name="l00093"></a>00093 <span class="comment"> */</span>
<a name="l00094"></a>00094 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga841e0a89a642e24141af1918a2c10448" title="Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...">av_image_alloc</a>(uint8_t *pointers[4], <span class="keywordtype">int</span> linesizes[4],
<a name="l00095"></a>00095 <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> align);
<a name="l00096"></a>00096 <span class="comment"></span>
<a name="l00097"></a>00097 <span class="comment">/**</span>
<a name="l00098"></a>00098 <span class="comment"> * Copy image plane from src to dst.</span>
<a name="l00099"></a>00099 <span class="comment"> * That is, copy "height" number of lines of "bytewidth" bytes each.</span>
<a name="l00100"></a>00100 <span class="comment"> * The first byte of each successive line is separated by *_linesize</span>
<a name="l00101"></a>00101 <span class="comment"> * bytes.</span>
<a name="l00102"></a>00102 <span class="comment"> *</span>
<a name="l00103"></a>00103 <span class="comment"> * bytewidth must be contained by both absolute values of dst_linesize</span>
<a name="l00104"></a>00104 <span class="comment"> * and src_linesize, otherwise the function behavior is undefined.</span>
<a name="l00105"></a>00105 <span class="comment"> *</span>
<a name="l00106"></a>00106 <span class="comment"> * @param dst_linesize linesize for the image plane in dst</span>
<a name="l00107"></a>00107 <span class="comment"> * @param src_linesize linesize for the image plane in src</span>
<a name="l00108"></a>00108 <span class="comment"> */</span>
<a name="l00109"></a>00109 <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#ga735cb949320867e9c2fffcb327d0ece2" title="Copy image plane from src to dst.">av_image_copy_plane</a>(uint8_t *dst, <span class="keywordtype">int</span> dst_linesize,
<a name="l00110"></a>00110 <span class="keyword">const</span> uint8_t *src, <span class="keywordtype">int</span> src_linesize,
<a name="l00111"></a>00111 <span class="keywordtype">int</span> bytewidth, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>);
<a name="l00112"></a>00112 <span class="comment"></span>
<a name="l00113"></a>00113 <span class="comment">/**</span>
<a name="l00114"></a>00114 <span class="comment"> * Copy image in src_data to dst_data.</span>
<a name="l00115"></a>00115 <span class="comment"> *</span>
<a name="l00116"></a>00116 <span class="comment"> * @param dst_linesizes linesizes for the image in dst_data</span>
<a name="l00117"></a>00117 <span class="comment"> * @param src_linesizes linesizes for the image in src_data</span>
<a name="l00118"></a>00118 <span class="comment"> */</span>
<a name="l00119"></a>00119 <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#ga6b5a267e202daadf81cbde6584055d1e" title="Copy image in src_data to dst_data.">av_image_copy</a>(uint8_t *dst_data[4], <span class="keywordtype">int</span> dst_linesizes[4],
<a name="l00120"></a>00120 <span class="keyword">const</span> uint8_t *src_data[4], <span class="keyword">const</span> <span class="keywordtype">int</span> src_linesizes[4],
<a name="l00121"></a>00121 <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>);
<a name="l00122"></a>00122 <span class="comment"></span>
<a name="l00123"></a>00123 <span class="comment">/**</span>
<a name="l00124"></a>00124 <span class="comment"> * Setup the data pointers and linesizes based on the specified image</span>
<a name="l00125"></a>00125 <span class="comment"> * parameters and the provided array.</span>
<a name="l00126"></a>00126 <span class="comment"> *</span>
<a name="l00127"></a>00127 <span class="comment"> * The fields of the given image are filled in by using the src</span>
<a name="l00128"></a>00128 <span class="comment"> * address which points to the image data buffer. Depending on the</span>
<a name="l00129"></a>00129 <span class="comment"> * specified pixel format, one or multiple image data pointers and</span>
<a name="l00130"></a>00130 <span class="comment"> * line sizes will be set. If a planar format is specified, several</span>
<a name="l00131"></a>00131 <span class="comment"> * pointers will be set pointing to the different picture planes and</span>
<a name="l00132"></a>00132 <span class="comment"> * the line sizes of the different planes will be stored in the</span>
<a name="l00133"></a>00133 <span class="comment"> * lines_sizes array. Call with src == NULL to get the required</span>
<a name="l00134"></a>00134 <span class="comment"> * size for the src buffer.</span>
<a name="l00135"></a>00135 <span class="comment"> *</span>
<a name="l00136"></a>00136 <span class="comment"> * To allocate the buffer and fill in the dst_data and dst_linesize in</span>
<a name="l00137"></a>00137 <span class="comment"> * one call, use av_image_alloc().</span>
<a name="l00138"></a>00138 <span class="comment"> *</span>
<a name="l00139"></a>00139 <span class="comment"> * @param dst_data data pointers to be filled in</span>
<a name="l00140"></a>00140 <span class="comment"> * @param dst_linesizes linesizes for the image in dst_data to be filled in</span>
<a name="l00141"></a>00141 <span class="comment"> * @param src buffer which will contain or contains the actual image data, can be NULL</span>
<a name="l00142"></a>00142 <span class="comment"> * @param pix_fmt the pixel format of the image</span>
<a name="l00143"></a>00143 <span class="comment"> * @param width the width of the image in pixels</span>
<a name="l00144"></a>00144 <span class="comment"> * @param height the height of the image in pixels</span>
<a name="l00145"></a>00145 <span class="comment"> * @param align the value used in src for linesize alignment</span>
<a name="l00146"></a>00146 <span class="comment"> * @return the size in bytes required for src, a negative error code</span>
<a name="l00147"></a>00147 <span class="comment"> * in case of failure</span>
<a name="l00148"></a>00148 <span class="comment"> */</span>
<a name="l00149"></a>00149 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga5b6ead346a70342ae8a303c16d2b3629" title="Setup the data pointers and linesizes based on the specified image parameters and the provided array...">av_image_fill_arrays</a>(uint8_t *dst_data[4], <span class="keywordtype">int</span> dst_linesize[4],
<a name="l00150"></a>00150 <span class="keyword">const</span> uint8_t *src,
<a name="l00151"></a>00151 <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);
<a name="l00152"></a>00152 <span class="comment"></span>
<a name="l00153"></a>00153 <span class="comment">/**</span>
<a name="l00154"></a>00154 <span class="comment"> * Return the size in bytes of the amount of data required to store an</span>
<a name="l00155"></a>00155 <span class="comment"> * image with the given parameters.</span>
<a name="l00156"></a>00156 <span class="comment"> *</span>
<a name="l00157"></a>00157 <span class="comment"> * @param[in] align the assumed linesize alignment</span>
<a name="l00158"></a>00158 <span class="comment"> */</span>
<a name="l00159"></a>00159 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga24a67963c3ae0054a2a4bab35930e694" title="Return the size in bytes of the amount of data required to store an image with the given parameters...">av_image_get_buffer_size</a>(<span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);
<a name="l00160"></a>00160 <span class="comment"></span>
<a name="l00161"></a>00161 <span class="comment">/**</span>
<a name="l00162"></a>00162 <span class="comment"> * Copy image data from an image into a buffer.</span>
<a name="l00163"></a>00163 <span class="comment"> *</span>
<a name="l00164"></a>00164 <span class="comment"> * av_image_get_buffer_size() can be used to compute the required size</span>
<a name="l00165"></a>00165 <span class="comment"> * for the buffer to fill.</span>
<a name="l00166"></a>00166 <span class="comment"> *</span>
<a name="l00167"></a>00167 <span class="comment"> * @param dst a buffer into which picture data will be copied</span>
<a name="l00168"></a>00168 <span class="comment"> * @param dst_size the size in bytes of dst</span>
<a name="l00169"></a>00169 <span class="comment"> * @param src_data pointers containing the source image data</span>
<a name="l00170"></a>00170 <span class="comment"> * @param src_linesizes linesizes for the image in src_data</span>
<a name="l00171"></a>00171 <span class="comment"> * @param pix_fmt the pixel format of the source image</span>
<a name="l00172"></a>00172 <span class="comment"> * @param width the width of the source image in pixels</span>
<a name="l00173"></a>00173 <span class="comment"> * @param height the height of the source image in pixels</span>
<a name="l00174"></a>00174 <span class="comment"> * @param align the assumed linesize alignment for dst</span>
<a name="l00175"></a>00175 <span class="comment"> * @return the number of bytes written to dst, or a negative value</span>
<a name="l00176"></a>00176 <span class="comment"> * (error code) on error</span>
<a name="l00177"></a>00177 <span class="comment"> */</span>
<a name="l00178"></a>00178 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga6f8576f1ef0c2d9a9f7c5ac7f9a28c52" title="Copy image data from an image into a buffer.">av_image_copy_to_buffer</a>(uint8_t *dst, <span class="keywordtype">int</span> dst_size,
<a name="l00179"></a>00179 <span class="keyword">const</span> uint8_t * <span class="keyword">const</span> src_data[4], <span class="keyword">const</span> <span class="keywordtype">int</span> src_linesize[4],
<a name="l00180"></a>00180 <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5" title="Pixel format.">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);
<a name="l00181"></a>00181 <span class="comment"></span>
<a name="l00182"></a>00182 <span class="comment">/**</span>
<a name="l00183"></a>00183 <span class="comment"> * Check if the given dimension of an image is valid, meaning that all</span>
<a name="l00184"></a>00184 <span class="comment"> * bytes of the image can be addressed with a signed int.</span>
<a name="l00185"></a>00185 <span class="comment"> *</span>
<a name="l00186"></a>00186 <span class="comment"> * @param w the width of the picture</span>
<a name="l00187"></a>00187 <span class="comment"> * @param h the height of the picture</span>
<a name="l00188"></a>00188 <span class="comment"> * @param log_offset the offset to sum to the log level for logging with log_ctx</span>
<a name="l00189"></a>00189 <span class="comment"> * @param log_ctx the parent logging context, it may be NULL</span>
<a name="l00190"></a>00190 <span class="comment"> * @return >= 0 if valid, a negative error code otherwise</span>
<a name="l00191"></a>00191 <span class="comment"> */</span>
<a name="l00192"></a>00192 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga3a867b6180ddad1e0c382ef0c5940b8e" title="Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...">av_image_check_size</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> w, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> log_offset, <span class="keywordtype">void</span> *log_ctx);
<a name="l00193"></a>00193 <span class="comment"></span>
<a name="l00194"></a>00194 <span class="comment">/**</span>
<a name="l00195"></a>00195 <span class="comment"> * Check if the given sample aspect ratio of an image is valid.</span>
<a name="l00196"></a>00196 <span class="comment"> *</span>
<a name="l00197"></a>00197 <span class="comment"> * It is considered invalid if the denominator is 0 or if applying the ratio</span>
<a name="l00198"></a>00198 <span class="comment"> * to the image size would make the smaller dimension less than 1. If the</span>
<a name="l00199"></a>00199 <span class="comment"> * sar numerator is 0, it is considered unknown and will return as valid.</span>
<a name="l00200"></a>00200 <span class="comment"> *</span>
<a name="l00201"></a>00201 <span class="comment"> * @param w width of the image</span>
<a name="l00202"></a>00202 <span class="comment"> * @param h height of the image</span>
<a name="l00203"></a>00203 <span class="comment"> * @param sar sample aspect ratio of the image</span>
<a name="l00204"></a>00204 <span class="comment"> * @return 0 if valid, a negative AVERROR code otherwise</span>
<a name="l00205"></a>00205 <span class="comment"> */</span>
<a name="l00206"></a>00206 <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#gada0f86cd0051ff8b9eef214e83e7ad1f" title="Check if the given sample aspect ratio of an image is valid.">av_image_check_sar</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> w, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> h, <a class="code" href="structAVRational.html" title="rational number numerator/denominator">AVRational</a> sar);
<a name="l00207"></a>00207 <span class="comment"></span>
<a name="l00208"></a>00208 <span class="comment">/**</span>
<a name="l00209"></a>00209 <span class="comment"> * @}</span>
<a name="l00210"></a>00210 <span class="comment"> */</span>
<a name="l00211"></a>00211
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_IMGUTILS_H */</span>
</pre></div></div><!-- contents -->
<!-- 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>Defines</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>
<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> 1.7.6.1
</small></address>
</body>
</html>