1<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>v4l2_enum_dv_timings_cap</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Device Drivers"><link rel="up" href="mediadev.html#id-1.8.2" title="Video2Linux devices"><link rel="prev" href="API-v4l2-valid-dv-timings.html" title="v4l2_valid_dv_timings"><link rel="next" href="API-v4l2-find-dv-timings-cap.html" title="v4l2_find_dv_timings_cap"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">v4l2_enum_dv_timings_cap</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-v4l2-valid-dv-timings.html">Prev</a> </td><th width="60%" align="center">Video2Linux devices</th><td width="20%" align="right"> <a accesskey="n" href="API-v4l2-find-dv-timings-cap.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-v4l2-enum-dv-timings-cap"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>v4l2_enum_dv_timings_cap — 
2     Helper function to enumerate possible DV timings based on capabilities
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">v4l2_enum_dv_timings_cap </b>(</code></td><td>struct v4l2_enum_dv_timings * <var class="pdparam">t</var>, </td></tr><tr><td> </td><td>const struct v4l2_dv_timings_cap * <var class="pdparam">cap</var>, </td></tr><tr><td> </td><td><a class="link" href="API-v4l2-check-dv-timings-fnc.html" title="v4l2_check_dv_timings_fnc">v4l2_check_dv_timings_fnc </a><var class="pdparam">fnc</var>, </td></tr><tr><td> </td><td>void * <var class="pdparam">fnc_handle</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="id-1.8.2.51.5"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>t</code></em></span></dt><dd><p>
4     the v4l2_enum_dv_timings struct.
5    </p></dd><dt><span class="term"><em class="parameter"><code>cap</code></em></span></dt><dd><p>
6     the v4l2_dv_timings_cap capabilities.
7    </p></dd><dt><span class="term"><em class="parameter"><code>fnc</code></em></span></dt><dd><p>
8     callback to check if this timing is OK. May be NULL.
9    </p></dd><dt><span class="term"><em class="parameter"><code>fnc_handle</code></em></span></dt><dd><p>
10     a handle that is passed on to <em class="parameter"><code>fnc</code></em>.
11    </p></dd></dl></div></div><div class="refsect1"><a name="id-1.8.2.51.6"></a><h2>Description</h2><p>
12   This enumerates dv_timings using the full list of possible CEA-861 and DMT
13   timings, filtering out any timings that are not supported based on the
14   hardware capabilities and the callback function (if non-NULL).
15   </p><p>
16
17   If a valid timing for the given index is found, it will fill in <em class="parameter"><code>t</code></em> and
18   return 0, otherwise it returns -EINVAL.
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