<!-- This comment will put IE 6, 7 and 8 in quirks mode -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>ALSA project - the C library reference: snd_pcm_ioplug_t Struct Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javaScript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body onload='searchBox.OnSelectItem(0);'>
<!-- Generated by Doxygen 1.6.3 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li class="current"><a href="annotated.html"><span>Data Structures</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<img id="MSearchSelect" src="search/search.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</div>
</li>
</ul>
</div>
<div class="tabs">
<ul>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li><a href="functions.html"><span>Data Fields</span></a></li>
</ul>
</div>
</div>
<div class="contents">
<h1>snd_pcm_ioplug_t Struct Reference<br/>
<small>
[<a class="el" href="group___p_c_m___i_o_plug.html">External I/O plugin SDK</a>]</small>
</h1><!-- doxytag: class="snd_pcm_ioplug" --><table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a82212f3b4b3faf86e4cd94f73f3709f7">version</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a26cb709f26f0a27b431c4f8ac8a8432e">name</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#aeeaec19c1ebc6c7f495e63f1dbb44077">flags</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#ab5ec9a953c48eb2497320ca29fa70ccc">poll_fd</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#aa6d9e1a0e624deb63327949ec0993ded">poll_events</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#adbd5412219daee8f2c79e971d1f53222">mmap_rw</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const snd_pcm_ioplug_callback_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a4343b66b90eb1c0d1f80ff32405d11eb">callback</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#ac311b3a612c0d95b91cc16b9fe964cc8">private_data</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a937fbef4311a361f4564d27a9ba4578b">pcm</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gac23b43ff55add78638e503b9cc892c24">snd_pcm_stream_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a8e67308342c0c6eab702016a402b4647">stream</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#ga61ac499cb3701ce536d4d83725908860">snd_pcm_state_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a9a25a295689632b4de8e7e673f57e94c">state</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">volatile <a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a66cf297ebbce9453b4bbd961f081c730">appl_ptr</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">volatile <a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#aa314200db67b8cc9ad89cd53f6102f26">hw_ptr</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a5186222a90004912d0895ba47631423d">nonblock</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#ga661221ba5e8f1d6eaf4ab8e2da57cc1a">snd_pcm_access_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#ac49bda6dd5d2e530d50478be89365ddc">access</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gaa14b7f26877a812acbb39811364177f8">snd_pcm_format_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a23dd3c4e4a032e35a4cc9a4ca83a07ec">format</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#ad25aba6588312a3a8921971fb12bf789">channels</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#ab7cb56b9d1ade3b984fa96bd392b2c9e">rate</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#aecac0c1343109c8b913b867ad7701f90">period_size</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__pcm__ioplug.html#a6138fb3dabf4c87a321c3e894021ff16">buffer_size</a></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Handle of ioplug</p>
<p>I/O plugin handle </p>
<hr/><h2>Field Documentation</h2>
<a class="anchor" id="ac49bda6dd5d2e530d50478be89365ddc"></a><!-- doxytag: member="snd_pcm_ioplug::access" ref="ac49bda6dd5d2e530d50478be89365ddc" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#ga661221ba5e8f1d6eaf4ab8e2da57cc1a">snd_pcm_access_t</a> snd_pcm_ioplug_t::access</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>access type; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="a66cf297ebbce9453b4bbd961f081c730"></a><!-- doxytag: member="snd_pcm_ioplug::appl_ptr" ref="a66cf297ebbce9453b4bbd961f081c730" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">volatile <a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_ioplug_t::appl_ptr</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>application pointer; read-only </p>
</div>
</div>
<a class="anchor" id="a6138fb3dabf4c87a321c3e894021ff16"></a><!-- doxytag: member="snd_pcm_ioplug::buffer_size" ref="a6138fb3dabf4c87a321c3e894021ff16" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_ioplug_t::buffer_size</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>buffer size; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="a4343b66b90eb1c0d1f80ff32405d11eb"></a><!-- doxytag: member="snd_pcm_ioplug::callback" ref="a4343b66b90eb1c0d1f80ff32405d11eb" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const snd_pcm_ioplug_callback_t* snd_pcm_ioplug_t::callback</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>callbacks of this plugin; must be filled before calling <a class="el" href="group___p_c_m___i_o_plug.html#ga7fb5213a5e776246e2b4dc53ec8d7604" title="Create an ioplug instance.">snd_pcm_ioplug_create()</a> </p>
</div>
</div>
<a class="anchor" id="ad25aba6588312a3a8921971fb12bf789"></a><!-- doxytag: member="snd_pcm_ioplug::channels" ref="ad25aba6588312a3a8921971fb12bf789" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::channels</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>number of channels; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="aeeaec19c1ebc6c7f495e63f1dbb44077"></a><!-- doxytag: member="snd_pcm_ioplug::flags" ref="aeeaec19c1ebc6c7f495e63f1dbb44077" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::flags</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>SND_PCM_IOPLUG_FLAG_XXX </p>
</div>
</div>
<a class="anchor" id="a23dd3c4e4a032e35a4cc9a4ca83a07ec"></a><!-- doxytag: member="snd_pcm_ioplug::format" ref="a23dd3c4e4a032e35a4cc9a4ca83a07ec" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gaa14b7f26877a812acbb39811364177f8">snd_pcm_format_t</a> snd_pcm_ioplug_t::format</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>PCM format; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="aa314200db67b8cc9ad89cd53f6102f26"></a><!-- doxytag: member="snd_pcm_ioplug::hw_ptr" ref="aa314200db67b8cc9ad89cd53f6102f26" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">volatile <a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_ioplug_t::hw_ptr</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>hw pointer; read-only </p>
</div>
</div>
<a class="anchor" id="adbd5412219daee8f2c79e971d1f53222"></a><!-- doxytag: member="snd_pcm_ioplug::mmap_rw" ref="adbd5412219daee8f2c79e971d1f53222" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::mmap_rw</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>pseudo mmap mode </p>
</div>
</div>
<a class="anchor" id="a26cb709f26f0a27b431c4f8ac8a8432e"></a><!-- doxytag: member="snd_pcm_ioplug::name" ref="a26cb709f26f0a27b431c4f8ac8a8432e" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const char* snd_pcm_ioplug_t::name</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>name of this plugin; must be filled before calling <a class="el" href="group___p_c_m___i_o_plug.html#ga7fb5213a5e776246e2b4dc53ec8d7604" title="Create an ioplug instance.">snd_pcm_ioplug_create()</a> </p>
</div>
</div>
<a class="anchor" id="a5186222a90004912d0895ba47631423d"></a><!-- doxytag: member="snd_pcm_ioplug::nonblock" ref="a5186222a90004912d0895ba47631423d" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int snd_pcm_ioplug_t::nonblock</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>non-block mode; read-only </p>
</div>
</div>
<a class="anchor" id="a937fbef4311a361f4564d27a9ba4578b"></a><!-- doxytag: member="snd_pcm_ioplug::pcm" ref="a937fbef4311a361f4564d27a9ba4578b" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a>* snd_pcm_ioplug_t::pcm</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>PCM handle filled by <a class="el" href="group___p_c_m___ext_plug.html#gab0b27889f74c83cd033062981320fd62" title="Create an extplug instance.">snd_pcm_extplug_create()</a> </p>
</div>
</div>
<a class="anchor" id="aecac0c1343109c8b913b867ad7701f90"></a><!-- doxytag: member="snd_pcm_ioplug::period_size" ref="aecac0c1343109c8b913b867ad7701f90" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_ioplug_t::period_size</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>period size; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="aa6d9e1a0e624deb63327949ec0993ded"></a><!-- doxytag: member="snd_pcm_ioplug::poll_events" ref="aa6d9e1a0e624deb63327949ec0993ded" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::poll_events</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>poll events </p>
</div>
</div>
<a class="anchor" id="ab5ec9a953c48eb2497320ca29fa70ccc"></a><!-- doxytag: member="snd_pcm_ioplug::poll_fd" ref="ab5ec9a953c48eb2497320ca29fa70ccc" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int snd_pcm_ioplug_t::poll_fd</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>poll file descriptor </p>
</div>
</div>
<a class="anchor" id="ac311b3a612c0d95b91cc16b9fe964cc8"></a><!-- doxytag: member="snd_pcm_ioplug::private_data" ref="ac311b3a612c0d95b91cc16b9fe964cc8" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void* snd_pcm_ioplug_t::private_data</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>private data, which can be used freely in the driver callbacks </p>
</div>
</div>
<a class="anchor" id="ab7cb56b9d1ade3b984fa96bd392b2c9e"></a><!-- doxytag: member="snd_pcm_ioplug::rate" ref="ab7cb56b9d1ade3b984fa96bd392b2c9e" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::rate</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>rate; filled after hw_params is called </p>
</div>
</div>
<a class="anchor" id="a9a25a295689632b4de8e7e673f57e94c"></a><!-- doxytag: member="snd_pcm_ioplug::state" ref="a9a25a295689632b4de8e7e673f57e94c" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#ga61ac499cb3701ce536d4d83725908860">snd_pcm_state_t</a> snd_pcm_ioplug_t::state</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>current PCM state; read-only </p>
</div>
</div>
<a class="anchor" id="a8e67308342c0c6eab702016a402b4647"></a><!-- doxytag: member="snd_pcm_ioplug::stream" ref="a8e67308342c0c6eab702016a402b4647" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gac23b43ff55add78638e503b9cc892c24">snd_pcm_stream_t</a> snd_pcm_ioplug_t::stream</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>stream direcion; read-only </p>
</div>
</div>
<a class="anchor" id="a82212f3b4b3faf86e4cd94f73f3709f7"></a><!-- doxytag: member="snd_pcm_ioplug::version" ref="a82212f3b4b3faf86e4cd94f73f3709f7" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_ioplug_t::version</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>protocol version; <a class="el" href="group___p_c_m___i_o_plug.html#ga81a2273c4df9be29d91e6e2a0860d991">SND_PCM_IOPLUG_VERSION</a> must be filled here before calling <a class="el" href="group___p_c_m___i_o_plug.html#ga7fb5213a5e776246e2b4dc53ec8d7604" title="Create an ioplug instance.">snd_pcm_ioplug_create()</a> </p>
</div>
</div>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li>/home/qateam/rpm/BUILD/alsa-lib-1.0.23/include/<a class="el" href="pcm__ioplug_8h_source.html">pcm_ioplug.h</a></li>
</ul>
</div>
<!--- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Defines</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<hr class="footer"/><address style="text-align: right;"><small>Generated on Sat Nov 20 07:42:24 2010 for ALSA project - the C library reference by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.3 </small></address>
</body>
</html>
