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<html>
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<title>libao - function - ao_plugin_open</title>
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<td><p class=tiny>libao documentation</p></td>
<td align=right><p class=tiny>libao version 0.8.5 - 20040312</p></td>
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<h1>ao_plugin_open</h1>
<p><i>declared in "ao/plugin.h";</i></p>
<p>Open the device for playback. All of the device options will have
already been set by previous calls to <a
href="ao_plugin_set_option.html">ao_plugin_set_option()</a>. If this is a
file output driver, the file itself will have be already opened and a
pointer to a <tt>FILE</tt> structure stored in <tt>device->file</tt>.
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<pre><b>
int ao_plugin_open(<a href="ao_device.html">ao_device</a> *device, <a href="ao_sample_format.html">ao_sample_format</a> *format);
</b></pre>
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<h3>Parameters</h3>
<dl>
<dt><i>device</i></dt>
<dd>Pointer to pre-allocated device structure. The plugin should
set its desired byte format in <tt>device->driver_byte_format</tt>.</dd>
<dt><i>format</i></dt>
<dd>Output device sample format. <tt>format->byte_format</tt> should be
ignored as it is relevant only to the library core.</dd>
</dl>
<h3>Return Values</h3>
<blockquote>
<li>1 indicates success.</li>
<li>0 indicates failure to open the device.
<a href="ao_plugin_device_clear.html">ao_plugin_device_clear()</a> should be
called to ensure the deallocate of all private data structures.</li>
</blockquote>
<p>
<br><br>
<hr noshade>
<table border=0 width=100%>
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<td><p class=tiny>copyright © 2001-2003 Stan Seibert</p></td>
<td align=right><p class=tiny><a href="http://www.xiph.org/">xiph.org</a><br><a href="mailto:volsung@xiph.org">volsung@xiph.org</a></p></td>
</tr><tr>
<td><p class=tiny>libao documentation</p></td>
<td align=right><p class=tiny>libao version 0.8.5 - 20040312</p></td>
</tr>
</table>
</body>
</html>
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