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 <span id="projectnumber">2.7.1</span>
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<a href="#pub-attribs">Data Fields</a> </div>
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<div class="title">AVOptionRanges Struct Reference<div class="ingroups"><a class="el" href="group__avoptions.html">AVOptions</a></div></div> </div>
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<!-- doxytag: class="AVOptionRanges" -->
<p>List of <a class="el" href="structAVOptionRange.html" title="A single allowed range of values, or a single allowed value.">AVOptionRange</a> structs.
<a href="structAVOptionRanges.html#details">More...</a></p>
<p><code>#include <<a class="el" href="opt_8h_source.html">opt.h</a>></code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVOptionRange.html">AVOptionRange</a> ** </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVOptionRanges.html#a6e081daa7e707607e63165909b0995ce">range</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Array of option ranges. <a href="#a6e081daa7e707607e63165909b0995ce"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVOptionRanges.html#a4cc8d5b5afbb07ae49357a7e0d6a2517">nb_ranges</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Number of ranges per component. <a href="#a4cc8d5b5afbb07ae49357a7e0d6a2517"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVOptionRanges.html#aff53b7303e862ed17b10237ca52ce8a8">nb_components</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Number of componentes. <a href="#aff53b7303e862ed17b10237ca52ce8a8"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>List of <a class="el" href="structAVOptionRange.html" title="A single allowed range of values, or a single allowed value.">AVOptionRange</a> structs. </p>
<p>Definition at line <a class="el" href="opt_8h_source.html#l00339">339</a> of file <a class="el" href="opt_8h_source.html">opt.h</a>.</p>
</div><hr/><h2>Field Documentation</h2>
<a class="anchor" id="a6e081daa7e707607e63165909b0995ce"></a><!-- doxytag: member="AVOptionRanges::range" ref="a6e081daa7e707607e63165909b0995ce" args="" -->
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<td class="memname"><a class="el" href="structAVOptionRange.html">AVOptionRange</a>** <a class="el" href="structAVOptionRanges.html#a6e081daa7e707607e63165909b0995ce">AVOptionRanges::range</a></td>
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<p>Array of option ranges. </p>
<p>Most of option types use just one component. Following describes multi-component option types:</p>
<p>AV_OPT_TYPE_IMAGE_SIZE: component index 0: range of pixel count (width * height). component index 1: range of width. component index 2: range of height.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>To obtain multi-component version of this structure, user must provide AV_OPT_MULTI_COMPONENT_RANGE to av_opt_query_ranges or av_opt_query_ranges_default function.</dd></dl>
<p>Multi-component range can be read as in following example:</p>
<div class="fragment"><pre class="fragment"> <span class="keywordtype">int</span> range_index, component_index;
<a class="code" href="structAVOptionRanges.html" title="List of AVOptionRange structs.">AVOptionRanges</a> *ranges;
<a class="code" href="structAVOptionRange.html" title="A single allowed range of values, or a single allowed value.">AVOptionRange</a> *<a class="code" href="structAVOptionRanges.html#a6e081daa7e707607e63165909b0995ce" title="Array of option ranges.">range</a>[3]; <span class="comment">//may require more than 3 in the future.</span>
<a class="code" href="group__avoptions.html#ga9751db4da3e0facd522f5b345f4001ef" title="Get a list of allowed ranges for the given option.">av_opt_query_ranges</a>(&ranges, obj, key, <a class="code" href="group__avoptions.html#ga1f10d07c79eec8bd1a8e1b91817e1b1a" title="Allows av_opt_query_ranges and av_opt_query_ranges_default to return more than one component for cert...">AV_OPT_MULTI_COMPONENT_RANGE</a>);
<span class="keywordflow">for</span> (range_index = 0; range_index < ranges-><a class="code" href="structAVOptionRanges.html#a4cc8d5b5afbb07ae49357a7e0d6a2517" title="Number of ranges per component.">nb_ranges</a>; range_index++) {
<span class="keywordflow">for</span> (component_index = 0; component_index < ranges-><a class="code" href="structAVOptionRanges.html#aff53b7303e862ed17b10237ca52ce8a8" title="Number of componentes.">nb_components</a>; component_index++)
range[component_index] = ranges-><a class="code" href="structAVOptionRanges.html#a6e081daa7e707607e63165909b0995ce" title="Array of option ranges.">range</a>[ranges-><a class="code" href="structAVOptionRanges.html#a4cc8d5b5afbb07ae49357a7e0d6a2517" title="Number of ranges per component.">nb_ranges</a> * component_index + range_index];
<span class="comment">//do something with range here.</span>
}
<a class="code" href="group__avoptions.html#ga880756f24644ff66c806ed2d9ab3d790" title="Free an AVOptionRanges struct and set it to NULL.">av_opt_freep_ranges</a>(&ranges);
</pre></div>
<p>Definition at line <a class="el" href="opt_8h_source.html#l00370">370</a> of file <a class="el" href="opt_8h_source.html">opt.h</a>.</p>
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<a class="anchor" id="a4cc8d5b5afbb07ae49357a7e0d6a2517"></a><!-- doxytag: member="AVOptionRanges::nb_ranges" ref="a4cc8d5b5afbb07ae49357a7e0d6a2517" args="" -->
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<td class="memname">int <a class="el" href="structAVOptionRanges.html#a4cc8d5b5afbb07ae49357a7e0d6a2517">AVOptionRanges::nb_ranges</a></td>
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<p>Number of ranges per component. </p>
<p>Definition at line <a class="el" href="opt_8h_source.html#l00374">374</a> of file <a class="el" href="opt_8h_source.html">opt.h</a>.</p>
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<a class="anchor" id="aff53b7303e862ed17b10237ca52ce8a8"></a><!-- doxytag: member="AVOptionRanges::nb_components" ref="aff53b7303e862ed17b10237ca52ce8a8" args="" -->
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<td class="memname">int <a class="el" href="structAVOptionRanges.html#aff53b7303e862ed17b10237ca52ce8a8">AVOptionRanges::nb_components</a></td>
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<p>Number of componentes. </p>
<p>Definition at line <a class="el" href="opt_8h_source.html#l00378">378</a> of file <a class="el" href="opt_8h_source.html">opt.h</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>libavutil/<a class="el" href="opt_8h_source.html">opt.h</a></li>
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