<!-- 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: /builddir/build/BUILD/alsa-lib-1.0.23/src/pcm/pcm_rate.c File 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 1.6.2-20100208 --> <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 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List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul> </div> </div> <div class="contents"> <h1>/builddir/build/BUILD/alsa-lib-1.0.23/src/pcm/pcm_rate.c File Reference</h1> <p>PCM Rate Plugin Interface. <a href="#_details">More...</a></p> <table border="0" cellpadding="0" cellspacing="0"> <tr><td colspan="2"><h2>Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__rate_8c.html#a8afd72938400c618c93f46ebf4ffe995">snd_pcm_rate_get_default_converter</a> (<a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *root)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Get a default converter string. <a href="#a8afd72938400c618c93f46ebf4ffe995"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__rate_8c.html#acbc33a01e5c38505fb8777e8a3cb808f">snd_pcm_rate_open</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> **pcmp, const char *name, <a class="el" href="group___p_c_m.html#gaa14b7f26877a812acbb39811364177f8">snd_pcm_format_t</a> sformat, unsigned int srate, const <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *converter, <a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *slave, int close_slave)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a new rate PCM. <a href="#acbc33a01e5c38505fb8777e8a3cb808f"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__rate_8c.html#aa2b39b0460f63d709b2244be669c479b">_snd_pcm_rate_open</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> **pcmp, const char *name, <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *root, <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *conf, <a class="el" href="group___p_c_m.html#gac23b43ff55add78638e503b9cc892c24">snd_pcm_stream_t</a> stream, int mode)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a new rate PCM. <a href="#aa2b39b0460f63d709b2244be669c479b"></a><br/></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <p>PCM Rate Plugin Interface. </p> <dl class="author"><dt><b>Author:</b></dt><dd>Abramo Bagnara <<a href="mailto:abramo@alsa-project.org">abramo@alsa-project.org</a>> </dd> <dd> Jaroslav Kysela <<a href="mailto:perex@perex.cz">perex@perex.cz</a>> </dd></dl> <dl class="date"><dt><b>Date:</b></dt><dd>2000-2004 </dd></dl> <hr/><h2>Function Documentation</h2> <a class="anchor" id="aa2b39b0460f63d709b2244be669c479b"></a><!-- doxytag: member="pcm_rate.c::_snd_pcm_rate_open" ref="aa2b39b0460f63d709b2244be669c479b" args="(snd_pcm_t **pcmp, const char *name, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int _snd_pcm_rate_open </td> <td>(</td> <td class="paramtype"><a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> ** </td> <td class="paramname"> <em>pcmp</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"> <em>name</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>root</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>conf</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group___p_c_m.html#gac23b43ff55add78638e503b9cc892c24">snd_pcm_stream_t</a> </td> <td class="paramname"> <em>stream</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"> <em>mode</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Creates a new rate PCM. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>pcmp</em> </td><td>Returns created PCM handle </td></tr> <tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>Name of PCM </td></tr> <tr><td valign="top"></td><td valign="top"><em>root</em> </td><td>Root configuration node </td></tr> <tr><td valign="top"></td><td valign="top"><em>conf</em> </td><td>Configuration node with rate PCM description </td></tr> <tr><td valign="top"></td><td valign="top"><em>stream</em> </td><td>Stream type </td></tr> <tr><td valign="top"></td><td valign="top"><em>mode</em> </td><td>Stream mode </td></tr> </table> </dd> </dl> <dl><dt><b>Return values:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>zero</em> </td><td>on success otherwise a negative error code </td></tr> </table> </dd> </dl> <dl class="warning"><dt><b>Warning:</b></dt><dd>Using of this function might be dangerous in the sense of compatibility reasons. The prototype might be freely changed in future. </dd></dl> </div> </div> <a class="anchor" id="a8afd72938400c618c93f46ebf4ffe995"></a><!-- doxytag: member="pcm_rate.c::snd_pcm_rate_get_default_converter" ref="a8afd72938400c618c93f46ebf4ffe995" args="(snd_config_t *root)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a>* snd_pcm_rate_get_default_converter </td> <td>(</td> <td class="paramtype"><a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>root</em></td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Get a default converter string. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>root</em> </td><td>Root configuration node </td></tr> </table> </dd> </dl> <dl><dt><b>Return values:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>A</em> </td><td>const config item if found, or NULL </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="acbc33a01e5c38505fb8777e8a3cb808f"></a><!-- doxytag: member="pcm_rate.c::snd_pcm_rate_open" ref="acbc33a01e5c38505fb8777e8a3cb808f" args="(snd_pcm_t **pcmp, const char *name, snd_pcm_format_t sformat, unsigned int srate, const snd_config_t *converter, snd_pcm_t *slave, int close_slave)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_pcm_rate_open </td> <td>(</td> <td class="paramtype"><a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> ** </td> <td class="paramname"> <em>pcmp</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"> <em>name</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group___p_c_m.html#gaa14b7f26877a812acbb39811364177f8">snd_pcm_format_t</a> </td> <td class="paramname"> <em>sformat</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>srate</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>converter</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> * </td> <td class="paramname"> <em>slave</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"> <em>close_slave</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Creates a new rate PCM. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>pcmp</em> </td><td>Returns created PCM handle </td></tr> <tr><td valign="top"></td><td valign="top"><em>name</em> </td><td>Name of PCM </td></tr> <tr><td valign="top"></td><td valign="top"><em>sformat</em> </td><td>Slave format </td></tr> <tr><td valign="top"></td><td valign="top"><em>srate</em> </td><td>Slave rate </td></tr> <tr><td valign="top"></td><td valign="top"><em>converter</em> </td><td>SRC type string node </td></tr> <tr><td valign="top"></td><td valign="top"><em>slave</em> </td><td>Slave PCM handle </td></tr> <tr><td valign="top"></td><td valign="top"><em>close_slave</em> </td><td>When set, the slave PCM handle is closed with copy PCM </td></tr> </table> </dd> </dl> <dl><dt><b>Return values:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>zero</em> </td><td>on success otherwise a negative error code </td></tr> </table> </dd> </dl> <dl class="warning"><dt><b>Warning:</b></dt><dd>Using of this function might be dangerous in the sense of compatibility reasons. 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