<!-- 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: /home/qateam/rpm/BUILD/alsa-lib-1.0.23/src/pcm/pcm_route.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 1.6.3 --> <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> 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href="globals.html"><span>Globals</span></a></li> </ul> </div> </div> <div class="contents"> <h1>/home/qateam/rpm/BUILD/alsa-lib-1.0.23/src/pcm/pcm_route.c File Reference</h1> <p>PCM Route & Volume 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">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__route_8c.html#ae19a77e8ec26dc93b8be5a93e7391550">snd_pcm_route_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, int schannels, snd_pcm_route_ttable_entry_t *ttable, unsigned int tt_ssize, unsigned int tt_cused, unsigned int tt_sused, <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 Route & Volume PCM. <a href="#ae19a77e8ec26dc93b8be5a93e7391550"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__route_8c.html#a759ab4e9f1a853e97094e4dc1b835776">snd_pcm_route_determine_ttable</a> (<a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *tt, unsigned int *tt_csize, unsigned int *tt_ssize)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Determine route matrix sizes. <a href="#a759ab4e9f1a853e97094e4dc1b835776"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__route_8c.html#aba572e5937822f4fc3feab834cdf9348">snd_pcm_route_load_ttable</a> (<a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *tt, snd_pcm_route_ttable_entry_t *ttable, unsigned int tt_csize, unsigned int tt_ssize, unsigned int *tt_cused, unsigned int *tt_sused, int schannels)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Load route matrix. <a href="#aba572e5937822f4fc3feab834cdf9348"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="pcm__route_8c.html#abee47f3c05e74d83bf2a96559de9a262">_snd_pcm_route_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 Route & Volume PCM. <a href="#abee47f3c05e74d83bf2a96559de9a262"></a><br/></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <p>PCM Route & Volume 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></dl> <dl class="date"><dt><b>Date:</b></dt><dd>2000-2001 </dd></dl> <hr/><h2>Function Documentation</h2> <a class="anchor" id="abee47f3c05e74d83bf2a96559de9a262"></a><!-- doxytag: member="pcm_route.c::_snd_pcm_route_open" ref="abee47f3c05e74d83bf2a96559de9a262" 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_route_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 Route & Volume 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 Route & Volume 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="a759ab4e9f1a853e97094e4dc1b835776"></a><!-- doxytag: member="pcm_route.c::snd_pcm_route_determine_ttable" ref="a759ab4e9f1a853e97094e4dc1b835776" args="(snd_config_t *tt, unsigned int *tt_csize, unsigned int *tt_ssize)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_pcm_route_determine_ttable </td> <td>(</td> <td class="paramtype"><a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>tt</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int * </td> <td class="paramname"> <em>tt_csize</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int * </td> <td class="paramname"> <em>tt_ssize</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Determine route matrix sizes. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>tt</em> </td><td>Configuration root describing route matrix </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_csize</em> </td><td>Returned client size in elements </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_ssize</em> </td><td>Returned slave size in elements </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> </div> </div> <a class="anchor" id="aba572e5937822f4fc3feab834cdf9348"></a><!-- doxytag: member="pcm_route.c::snd_pcm_route_load_ttable" ref="aba572e5937822f4fc3feab834cdf9348" args="(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable, unsigned int tt_csize, unsigned int tt_ssize, unsigned int *tt_cused, unsigned int *tt_sused, int schannels)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_pcm_route_load_ttable </td> <td>(</td> <td class="paramtype"><a class="el" href="group___config.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> * </td> <td class="paramname"> <em>tt</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">snd_pcm_route_ttable_entry_t * </td> <td class="paramname"> <em>ttable</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>tt_csize</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>tt_ssize</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int * </td> <td class="paramname"> <em>tt_cused</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int * </td> <td class="paramname"> <em>tt_sused</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"> <em>schannels</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Load route matrix. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>tt</em> </td><td>Configuration root describing route matrix </td></tr> <tr><td valign="top"></td><td valign="top"><em>ttable</em> </td><td>Returned route matrix </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_csize</em> </td><td>Client size in elements </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_ssize</em> </td><td>Slave size in elements </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_cused</em> </td><td>Used client elements </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_sused</em> </td><td>Used slave elements </td></tr> <tr><td valign="top"></td><td valign="top"><em>schannels</em> </td><td>Slave channels </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> </div> </div> <a class="anchor" id="ae19a77e8ec26dc93b8be5a93e7391550"></a><!-- doxytag: member="pcm_route.c::snd_pcm_route_open" ref="ae19a77e8ec26dc93b8be5a93e7391550" args="(snd_pcm_t **pcmp, const char *name, snd_pcm_format_t sformat, int schannels, snd_pcm_route_ttable_entry_t *ttable, unsigned int tt_ssize, unsigned int tt_cused, unsigned int tt_sused, snd_pcm_t *slave, int close_slave)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_pcm_route_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">int </td> <td class="paramname"> <em>schannels</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">snd_pcm_route_ttable_entry_t * </td> <td class="paramname"> <em>ttable</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>tt_ssize</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>tt_cused</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"> <em>tt_sused</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 Route & Volume 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>schannels</em> </td><td>Slave channels </td></tr> <tr><td valign="top"></td><td valign="top"><em>ttable</em> </td><td>Attenuation table </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_ssize</em> </td><td>Attenuation table - slave size </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_cused</em> </td><td>Attenuation table - client used count </td></tr> <tr><td valign="top"></td><td valign="top"><em>tt_sused</em> </td><td>Attenuation table - slave used count </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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