1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>snd_ctl_sync_vmaster</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The ALSA Driver API"><link rel="up" href="ch03s03.html" title="Virtual Master Control API"><link rel="prev" href="API-snd-ctl-add-vmaster-hook.html" title="snd_ctl_add_vmaster_hook"><link rel="next" href="API-snd-ctl-add-slave.html" title="snd_ctl_add_slave"></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">snd_ctl_sync_vmaster</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-snd-ctl-add-vmaster-hook.html">Prev</a>&#160;</td><th width="60%" align="center">Virtual Master Control API</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-snd-ctl-add-slave.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-snd-ctl-sync-vmaster"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>snd_ctl_sync_vmaster &#8212; 
2     Sync the vmaster slaves and hook
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">void <b class="fsfunc">snd_ctl_sync_vmaster </b>(</code></td><td>struct snd_kcontrol * <var class="pdparam">kcontrol</var>, </td></tr><tr><td>&#160;</td><td>bool <var class="pdparam">hook_only</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1094838724"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>kcontrol</code></em></span></dt><dd><p>
4     vmaster kctl element
5    </p></dd><dt><span class="term"><em class="parameter"><code>hook_only</code></em></span></dt><dd><p>
6     sync only the hook
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1094841364"></a><h2>Description</h2><p>
8   Forcibly call the put callback of each slave and call the hook function
9   to synchronize with the current value of the given vmaster element.
10   NOP when NULL is passed to <em class="parameter"><code>kcontrol</code></em>.
11</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-snd-ctl-add-vmaster-hook.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch03s03.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-snd-ctl-add-slave.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">snd_ctl_add_vmaster_hook</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">snd_ctl_add_slave</span></td></tr></table></div></body></html>
12