1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>hdmi_infoframe_pack</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="ch02s05.html#idp1126875156" title="HDMI Infoframes Helper Reference"><link rel="prev" href="API-hdmi-vendor-infoframe-pack.html" title="hdmi_vendor_infoframe_pack"><link rel="next" href="API-hdmi-infoframe-log.html" title="hdmi_infoframe_log"></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">hdmi_infoframe_pack</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-hdmi-vendor-infoframe-pack.html">Prev</a>&#160;</td><th width="60%" align="center">HDMI Infoframes Helper Reference</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-hdmi-infoframe-log.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-hdmi-infoframe-pack"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>hdmi_infoframe_pack &#8212; 
2     write a HDMI infoframe to binary buffer
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">ssize_t <b class="fsfunc">hdmi_infoframe_pack </b>(</code></td><td>union hdmi_infoframe * <var class="pdparam">frame</var>, </td></tr><tr><td>&#160;</td><td>void * <var class="pdparam">buffer</var>, </td></tr><tr><td>&#160;</td><td>size_t <var class="pdparam">size</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1126965484"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>frame</code></em></span></dt><dd><p>
4     HDMI infoframe
5    </p></dd><dt><span class="term"><em class="parameter"><code>buffer</code></em></span></dt><dd><p>
6     destination buffer
7    </p></dd><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
8     size of buffer
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1126969132"></a><h2>Description</h2><p>
10   Packs the information contained in the <em class="parameter"><code>frame</code></em> structure into a binary
11   representation that can be written into the corresponding controller
12   registers. Also computes the checksum as required by section 5.3.5 of
13   the HDMI 1.4 specification.
14   </p><p>
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16   Returns the number of bytes packed into the binary buffer or a negative
17   error code on failure.
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