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<!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"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.5"/> <title>ALSA project - the C library reference: Use Case Interface</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">ALSA project - the C library reference </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <script type="text/javascript"> var searchBox = new SearchBox("searchBox", "search",false,'Search'); </script> <div id="navrow1" class="tabs"> <ul class="tablist"> <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><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"> <span class="left"> <img id="MSearchSelect" src="search/mag_sel.png" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return 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class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Pages</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div class="header"> <div class="summary"> <a href="#define-members">Macros</a> | <a href="#typedef-members">Typedefs</a> | <a href="#func-members">Functions</a> </div> <div class="headertitle"> <div class="title">Use Case Interface</div> </div> </div><!--header--> <div class="contents"> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a> Macros</h2></td></tr> <tr class="memitem:gaedcdfd09f499b753d8652772ef1a248f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaedcdfd09f499b753d8652772ef1a248f">SND_USE_CASE_VERB_INACTIVE</a>   "Inactive"</td></tr> <tr class="separator:gaedcdfd09f499b753d8652772ef1a248f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga71b24a1fcc4ce2cee555520ca546b348"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga71b24a1fcc4ce2cee555520ca546b348">SND_USE_CASE_VERB_HIFI</a>   "HiFi"</td></tr> <tr class="separator:ga71b24a1fcc4ce2cee555520ca546b348"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga9a0739ade4ac574b31b4728c22280861"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga9a0739ade4ac574b31b4728c22280861">SND_USE_CASE_VERB_HIFI_LOW_POWER</a>   "HiFi Low Power"</td></tr> <tr class="separator:ga9a0739ade4ac574b31b4728c22280861"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae496d33ac019caffae8dca584b04d09f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gae496d33ac019caffae8dca584b04d09f">SND_USE_CASE_VERB_VOICE</a>   "Voice"</td></tr> <tr class="separator:gae496d33ac019caffae8dca584b04d09f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga64b61825903d5ce88d3f4cfb12c7bd00"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga64b61825903d5ce88d3f4cfb12c7bd00">SND_USE_CASE_VERB_VOICE_LOW_POWER</a>   "Voice Low Power"</td></tr> <tr class="separator:ga64b61825903d5ce88d3f4cfb12c7bd00"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaaa4aed51667887d194caae91362e8428"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaaa4aed51667887d194caae91362e8428">SND_USE_CASE_VERB_VOICECALL</a>   "Voice Call"</td></tr> <tr class="separator:gaaa4aed51667887d194caae91362e8428"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga938754af309628dfc8bafe28018b8aab"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga938754af309628dfc8bafe28018b8aab">SND_USE_CASE_VERB_IP_VOICECALL</a>   "Voice Call IP"</td></tr> <tr class="separator:ga938754af309628dfc8bafe28018b8aab"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab08fad02c1e8641016be957fc5ce3705"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gab08fad02c1e8641016be957fc5ce3705">SND_USE_CASE_VERB_ANALOG_RADIO</a>   "FM Analog Radio"</td></tr> <tr class="separator:gab08fad02c1e8641016be957fc5ce3705"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac1fc6fc3c4f08b4de9e622d05b591cb2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gac1fc6fc3c4f08b4de9e622d05b591cb2">SND_USE_CASE_VERB_DIGITAL_RADIO</a>   "FM Digital Radio"</td></tr> <tr class="separator:gac1fc6fc3c4f08b4de9e622d05b591cb2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa7abb8ce3d21b584c621869f7ebed3e6"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaa7abb8ce3d21b584c621869f7ebed3e6">SND_USE_CASE_DEV_NONE</a>   "None"</td></tr> <tr class="separator:gaa7abb8ce3d21b584c621869f7ebed3e6"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga515b2956d58485b27fb982965d067c55"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga515b2956d58485b27fb982965d067c55">SND_USE_CASE_DEV_SPEAKER</a>   "Speaker"</td></tr> <tr class="separator:ga515b2956d58485b27fb982965d067c55"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa5d03312d1990c0bd5c162f61fbfa4a0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaa5d03312d1990c0bd5c162f61fbfa4a0">SND_USE_CASE_DEV_LINE</a>   "Line"</td></tr> <tr class="separator:gaa5d03312d1990c0bd5c162f61fbfa4a0"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaf2c22989c5315abcee46713cde8693d2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaf2c22989c5315abcee46713cde8693d2">SND_USE_CASE_DEV_HEADPHONES</a>   "Headphones"</td></tr> <tr class="separator:gaf2c22989c5315abcee46713cde8693d2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga72c3300fac357a2e22b52afc13547ce0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga72c3300fac357a2e22b52afc13547ce0">SND_USE_CASE_DEV_HEADSET</a>   "Headset"</td></tr> <tr class="separator:ga72c3300fac357a2e22b52afc13547ce0"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga315d29bfbdf84cff8b7a593c34f6393b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga315d29bfbdf84cff8b7a593c34f6393b">SND_USE_CASE_DEV_HANDSET</a>   "Handset"</td></tr> <tr class="separator:ga315d29bfbdf84cff8b7a593c34f6393b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4992d89d4ec8be51f19bec0a69ba1984"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga4992d89d4ec8be51f19bec0a69ba1984">SND_USE_CASE_DEV_BLUETOOTH</a>   "Bluetooth"</td></tr> <tr class="separator:ga4992d89d4ec8be51f19bec0a69ba1984"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga6ca86620d080360f6e2a240efb334dec"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga6ca86620d080360f6e2a240efb334dec">SND_USE_CASE_DEV_EARPIECE</a>   "Earpiece"</td></tr> <tr class="separator:ga6ca86620d080360f6e2a240efb334dec"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga7f7f45feb440a49be3be9e52da98b242"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga7f7f45feb440a49be3be9e52da98b242">SND_USE_CASE_DEV_SPDIF</a>   "SPDIF"</td></tr> <tr class="separator:ga7f7f45feb440a49be3be9e52da98b242"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab4e4a2b3d44883b1ffb5406529746faf"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gab4e4a2b3d44883b1ffb5406529746faf">SND_USE_CASE_DEV_HDMI</a>   "HDMI"</td></tr> <tr class="separator:gab4e4a2b3d44883b1ffb5406529746faf"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaec6b78d147824af1474fc914770a834c"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaec6b78d147824af1474fc914770a834c">SND_USE_CASE_MOD_CAPTURE_VOICE</a>   "Capture Voice"</td></tr> <tr class="separator:gaec6b78d147824af1474fc914770a834c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad685f6b4dcb9e37f0b5a1160425aec23"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gad685f6b4dcb9e37f0b5a1160425aec23">SND_USE_CASE_MOD_CAPTURE_MUSIC</a>   "Capture Music"</td></tr> <tr class="separator:gad685f6b4dcb9e37f0b5a1160425aec23"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gadee4d4dce15624e282ab1960113caf8b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gadee4d4dce15624e282ab1960113caf8b">SND_USE_CASE_MOD_PLAY_MUSIC</a>   "Play Music"</td></tr> <tr class="separator:gadee4d4dce15624e282ab1960113caf8b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga61c217f060e616d61a294ac5d5d2fac0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga61c217f060e616d61a294ac5d5d2fac0">SND_USE_CASE_MOD_PLAY_VOICE</a>   "Play Voice"</td></tr> <tr class="separator:ga61c217f060e616d61a294ac5d5d2fac0"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaacc8e06e0c8fc0de5e26df6f20462484"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaacc8e06e0c8fc0de5e26df6f20462484">SND_USE_CASE_MOD_PLAY_TONE</a>   "Play Tone"</td></tr> <tr class="separator:gaacc8e06e0c8fc0de5e26df6f20462484"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae2a230a913142c17f30d7dc2ae416866"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gae2a230a913142c17f30d7dc2ae416866">SND_USE_CASE_MOD_ECHO_REF</a>   "Echo Reference"</td></tr> <tr class="separator:gae2a230a913142c17f30d7dc2ae416866"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga64dd2e9f8e4e800effc02d895e1bfdbb"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga64dd2e9f8e4e800effc02d895e1bfdbb">SND_USE_CASE_TQ_MUSIC</a>   "Music"</td></tr> <tr class="separator:ga64dd2e9f8e4e800effc02d895e1bfdbb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa822e565021887e26c0eaec2cee97bbd"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaa822e565021887e26c0eaec2cee97bbd">SND_USE_CASE_TQ_VOICE</a>   "Voice"</td></tr> <tr class="separator:gaa822e565021887e26c0eaec2cee97bbd"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga022328b4bb0b0b14d358cb2155e5d184"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga022328b4bb0b0b14d358cb2155e5d184">SND_USE_CASE_TQ_TONES</a>   "Tones"</td></tr> <tr class="separator:ga022328b4bb0b0b14d358cb2155e5d184"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a> Typedefs</h2></td></tr> <tr class="memitem:gace35ebd33e632cba9441762f6633a20e"><td class="memItemLeft" align="right" valign="top">typedef struct snd_use_case_mgr </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a></td></tr> <tr class="separator:gace35ebd33e632cba9441762f6633a20e"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:ga530159363360c3cae3c9816c034fbcc5"><td class="memItemLeft" align="right" valign="top">char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga530159363360c3cae3c9816c034fbcc5">snd_use_case_identifier</a> (const char *fmt,...)</td></tr> <tr class="memdesc:ga530159363360c3cae3c9816c034fbcc5"><td class="mdescLeft"> </td><td class="mdescRight">Create an identifier. <a href="#ga530159363360c3cae3c9816c034fbcc5">More...</a><br/></td></tr> <tr class="separator:ga530159363360c3cae3c9816c034fbcc5"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga003553ee6fd13119fc9e08ffcdd959f9"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga003553ee6fd13119fc9e08ffcdd959f9">snd_use_case_free_list</a> (const char *list[], int items)</td></tr> <tr class="memdesc:ga003553ee6fd13119fc9e08ffcdd959f9"><td class="mdescLeft"> </td><td class="mdescRight">Free a string list. <a href="#ga003553ee6fd13119fc9e08ffcdd959f9">More...</a><br/></td></tr> <tr class="separator:ga003553ee6fd13119fc9e08ffcdd959f9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa128bcb412f42247e561b81ec342c2e1"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaa128bcb412f42247e561b81ec342c2e1">snd_use_case_get_list</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr, const char *identifier, const char **list[])</td></tr> <tr class="memdesc:gaa128bcb412f42247e561b81ec342c2e1"><td class="mdescLeft"> </td><td class="mdescRight">Obtain a list of entries. <a href="#gaa128bcb412f42247e561b81ec342c2e1">More...</a><br/></td></tr> <tr class="separator:gaa128bcb412f42247e561b81ec342c2e1"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga9c13ae514eeebf918adcec0e4534aca5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga9c13ae514eeebf918adcec0e4534aca5">snd_use_case_get</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr, const char *identifier, const char **value)</td></tr> <tr class="memdesc:ga9c13ae514eeebf918adcec0e4534aca5"><td class="mdescLeft"> </td><td class="mdescRight">Get current - string. <a href="#ga9c13ae514eeebf918adcec0e4534aca5">More...</a><br/></td></tr> <tr class="separator:ga9c13ae514eeebf918adcec0e4534aca5"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga66311429dfd62743089be3eb79f1d1f5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga66311429dfd62743089be3eb79f1d1f5">snd_use_case_geti</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr, const char *identifier, long *value)</td></tr> <tr class="memdesc:ga66311429dfd62743089be3eb79f1d1f5"><td class="mdescLeft"> </td><td class="mdescRight">Get current - integer. <a href="#ga66311429dfd62743089be3eb79f1d1f5">More...</a><br/></td></tr> <tr class="separator:ga66311429dfd62743089be3eb79f1d1f5"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae9ff2a06c955d40ad0204f21f8352831"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gae9ff2a06c955d40ad0204f21f8352831">snd_use_case_set</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr, const char *identifier, const char *value)</td></tr> <tr class="memdesc:gae9ff2a06c955d40ad0204f21f8352831"><td class="mdescLeft"> </td><td class="mdescRight">Set new. <a href="#gae9ff2a06c955d40ad0204f21f8352831">More...</a><br/></td></tr> <tr class="separator:gae9ff2a06c955d40ad0204f21f8352831"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga74f0ef0116590fe8eec1edeaf1d88847"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga74f0ef0116590fe8eec1edeaf1d88847">snd_use_case_mgr_open</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> **uc_mgr, const char *card_name)</td></tr> <tr class="memdesc:ga74f0ef0116590fe8eec1edeaf1d88847"><td class="mdescLeft"> </td><td class="mdescRight">Open and initialise use case core for sound card. <a href="#ga74f0ef0116590fe8eec1edeaf1d88847">More...</a><br/></td></tr> <tr class="separator:ga74f0ef0116590fe8eec1edeaf1d88847"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gafedd1fc74ce9086033f6f668348321b4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gafedd1fc74ce9086033f6f668348321b4">snd_use_case_mgr_reload</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr)</td></tr> <tr class="memdesc:gafedd1fc74ce9086033f6f668348321b4"><td class="mdescLeft"> </td><td class="mdescRight">Reload and re-parse use case configuration files for sound card. <a href="#gafedd1fc74ce9086033f6f668348321b4">More...</a><br/></td></tr> <tr class="separator:gafedd1fc74ce9086033f6f668348321b4"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaac2bf25d233230d2d6a9e422795d716c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#gaac2bf25d233230d2d6a9e422795d716c">snd_use_case_mgr_close</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr)</td></tr> <tr class="memdesc:gaac2bf25d233230d2d6a9e422795d716c"><td class="mdescLeft"> </td><td class="mdescRight">Close use case manager. <a href="#gaac2bf25d233230d2d6a9e422795d716c">More...</a><br/></td></tr> <tr class="separator:gaac2bf25d233230d2d6a9e422795d716c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga1364dba503c216b2e46085a3f4abd20a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ucm.html#ga1364dba503c216b2e46085a3f4abd20a">snd_use_case_mgr_reset</a> (<a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> *uc_mgr)</td></tr> <tr class="memdesc:ga1364dba503c216b2e46085a3f4abd20a"><td class="mdescLeft"> </td><td class="mdescRight">Reset use case manager verb, device, modifier to deafult settings. <a href="#ga1364dba503c216b2e46085a3f4abd20a">More...</a><br/></td></tr> <tr class="separator:ga1364dba503c216b2e46085a3f4abd20a"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <p>The ALSA Use Case manager interface. See <a class="el" href="group__ucm.html">ALSA Use Case Interface</a> page for more details. </p> <h3><a class="anchor" id="Usecase"></a>ALSA Use Case Interface</h3><div class="textblock">The use case manager works by configuring the sound card ALSA kcontrols to change the hardware digital and analog audio routing to match the requested device use case. The use case manager kcontrol configurations are stored in easy to modify text files.An audio use case can be defined by a verb and device parameter. The verb describes the use case action i.e. a phone call, listening to music, recording a conversation etc. The device describes the physical audio capture and playback hardware i.e. headphones, phone handset, bluetooth headset, etc.It's intended clients will mostly only need to set the use case verb and device for each system use case change (as the verb and device parameters cover most audio use cases).However there are times when a use case has to be modified at runtime. e.g.<ul> <li>Incoming phone call when the device is playing music</li> <li>Recording sections of a phone call</li> <li>Playing tones during a call.</li> </ul> In order to allow asynchronous runtime use case adaptations, we have a third optional modifier parameter that can be used to further configure the use case during live audio runtime.This interface allows clients to :-<ul> <li>Query the supported use case verbs, devices and modifiers for the machine.</li> <li>Set and Get use case verbs, devices and modifiers for the machine.</li> <li>Get the ALSA PCM playback and capture device PCMs for use case verb, use case device and modifier.</li> <li>Get the TQ parameter for each use case verb, use case device and modifier.</li> <li>Get the ALSA master playback and capture volume/switch kcontrols for each use case. </li> </ul> </div><h2 class="groupheader">Macro Definition Documentation</h2> <a class="anchor" id="ga4992d89d4ec8be51f19bec0a69ba1984"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_BLUETOOTH   "Bluetooth"</td> </tr> </table> </div><div class="memdoc"> <p>Bluetooth Device </p> </div> </div> <a class="anchor" id="ga6ca86620d080360f6e2a240efb334dec"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_EARPIECE   "Earpiece"</td> </tr> </table> </div><div class="memdoc"> <p>Earpiece Device </p> </div> </div> <a class="anchor" id="ga315d29bfbdf84cff8b7a593c34f6393b"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_HANDSET   "Handset"</td> </tr> </table> </div><div class="memdoc"> <p>Handset Device </p> </div> </div> <a class="anchor" id="gab4e4a2b3d44883b1ffb5406529746faf"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_HDMI   "HDMI"</td> </tr> </table> </div><div class="memdoc"> <p>HDMI Device </p> </div> </div> <a class="anchor" id="gaf2c22989c5315abcee46713cde8693d2"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_HEADPHONES   "Headphones"</td> </tr> </table> </div><div class="memdoc"> <p>Headphones Device </p> </div> </div> <a class="anchor" id="ga72c3300fac357a2e22b52afc13547ce0"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_HEADSET   "Headset"</td> </tr> </table> </div><div class="memdoc"> <p>Headset Device </p> </div> </div> <a class="anchor" id="gaa5d03312d1990c0bd5c162f61fbfa4a0"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_LINE   "Line"</td> </tr> </table> </div><div class="memdoc"> <p>Line Device </p> </div> </div> <a class="anchor" id="gaa7abb8ce3d21b584c621869f7ebed3e6"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_NONE   "None"</td> </tr> </table> </div><div class="memdoc"> <p>None Device </p> </div> </div> <a class="anchor" id="ga7f7f45feb440a49be3be9e52da98b242"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_SPDIF   "SPDIF"</td> </tr> </table> </div><div class="memdoc"> <p>SPDIF Device </p> </div> </div> <a class="anchor" id="ga515b2956d58485b27fb982965d067c55"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_DEV_SPEAKER   "Speaker"</td> </tr> </table> </div><div class="memdoc"> <p>Speaker Device </p> </div> </div> <a class="anchor" id="gad685f6b4dcb9e37f0b5a1160425aec23"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_CAPTURE_MUSIC   "Capture Music"</td> </tr> </table> </div><div class="memdoc"> <p>Capture Music Modifier </p> </div> </div> <a class="anchor" id="gaec6b78d147824af1474fc914770a834c"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_CAPTURE_VOICE   "Capture Voice"</td> </tr> </table> </div><div class="memdoc"> <p>Capture Voice Modifier </p> </div> </div> <a class="anchor" id="gae2a230a913142c17f30d7dc2ae416866"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_ECHO_REF   "Echo Reference"</td> </tr> </table> </div><div class="memdoc"> <p>Echo Reference Modifier </p> </div> </div> <a class="anchor" id="gadee4d4dce15624e282ab1960113caf8b"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_PLAY_MUSIC   "Play Music"</td> </tr> </table> </div><div class="memdoc"> <p>Play Music Modifier </p> </div> </div> <a class="anchor" id="gaacc8e06e0c8fc0de5e26df6f20462484"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_PLAY_TONE   "Play Tone"</td> </tr> </table> </div><div class="memdoc"> <p>Play Tone Modifier </p> </div> </div> <a class="anchor" id="ga61c217f060e616d61a294ac5d5d2fac0"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_MOD_PLAY_VOICE   "Play Voice"</td> </tr> </table> </div><div class="memdoc"> <p>Play Voice Modifier </p> </div> </div> <a class="anchor" id="ga64dd2e9f8e4e800effc02d895e1bfdbb"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_TQ_MUSIC   "Music"</td> </tr> </table> </div><div class="memdoc"> <p>TQ - Tone Quality</p> <p>The interface allows clients to determine the audio TQ required for each use case verb and modifier. It's intended as an optional hint to the audio driver in order to lower power consumption.Music Tone Quality </p> </div> </div> <a class="anchor" id="ga022328b4bb0b0b14d358cb2155e5d184"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_TQ_TONES   "Tones"</td> </tr> </table> </div><div class="memdoc"> <p>Tones Tone Quality </p> </div> </div> <a class="anchor" id="gaa822e565021887e26c0eaec2cee97bbd"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_TQ_VOICE   "Voice"</td> </tr> </table> </div><div class="memdoc"> <p>Voice Tone Quality </p> </div> </div> <a class="anchor" id="gab08fad02c1e8641016be957fc5ce3705"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_ANALOG_RADIO   "FM Analog Radio"</td> </tr> </table> </div><div class="memdoc"> <p>FM Analog Radio Verb </p> </div> </div> <a class="anchor" id="gac1fc6fc3c4f08b4de9e622d05b591cb2"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_DIGITAL_RADIO   "FM Digital Radio"</td> </tr> </table> </div><div class="memdoc"> <p>FM Digital Radio Verb </p> </div> </div> <a class="anchor" id="ga71b24a1fcc4ce2cee555520ca546b348"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_HIFI   "HiFi"</td> </tr> </table> </div><div class="memdoc"> <p>HiFi Verb </p> </div> </div> <a class="anchor" id="ga9a0739ade4ac574b31b4728c22280861"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_HIFI_LOW_POWER   "HiFi Low Power"</td> </tr> </table> </div><div class="memdoc"> <p>HiFi Low Power Verb </p> </div> </div> <a class="anchor" id="gaedcdfd09f499b753d8652772ef1a248f"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_INACTIVE   "Inactive"</td> </tr> </table> </div><div class="memdoc"> <p>Inactive Verb </p> </div> </div> <a class="anchor" id="ga938754af309628dfc8bafe28018b8aab"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_IP_VOICECALL   "Voice Call IP"</td> </tr> </table> </div><div class="memdoc"> <p>Voice Call IP Verb </p> </div> </div> <a class="anchor" id="gae496d33ac019caffae8dca584b04d09f"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_VOICE   "Voice"</td> </tr> </table> </div><div class="memdoc"> <p>Voice Verb </p> </div> </div> <a class="anchor" id="ga64b61825903d5ce88d3f4cfb12c7bd00"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_VOICE_LOW_POWER   "Voice Low Power"</td> </tr> </table> </div><div class="memdoc"> <p>Voice Low Power Verb </p> </div> </div> <a class="anchor" id="gaaa4aed51667887d194caae91362e8428"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define SND_USE_CASE_VERB_VOICECALL   "Voice Call"</td> </tr> </table> </div><div class="memdoc"> <p>Voice Call Verb </p> </div> </div> <h2 class="groupheader">Typedef Documentation</h2> <a class="anchor" id="gace35ebd33e632cba9441762f6633a20e"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef struct snd_use_case_mgr <a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a></td> </tr> </table> </div><div class="memdoc"> <p>use case container </p> </div> </div> <h2 class="groupheader">Function Documentation</h2> <a class="anchor" id="ga003553ee6fd13119fc9e08ffcdd959f9"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_free_list </td> <td>(</td> <td class="paramtype">const char * </td> <td class="paramname"><em>list</em>[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>items</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Free a string list. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">list</td><td>The string list to free </td></tr> <tr><td class="paramname">items</td><td>Count of strings </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="ga9c13ae514eeebf918adcec0e4534aca5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_get </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>identifier</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char ** </td> <td class="paramname"><em>value</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Get current - string. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> <tr><td class="paramname">value</td><td>Value pointer </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code</dd></dl> <p>Note: The returned string is dynamically allocated, use free() to deallocate this string. (Yes, the value parameter shouldn't be marked as "const", but it's too late to fix it, sorry about that.)</p> <p>Known identifiers:</p> <ul> <li>NULL - return current card</li> <li>_verb - return current verb</li> <li>_file - return configuration file loaded for current card</li> <li>[=]{NAME}[/[{modifier}|{/device}][/{verb}]]<ul> <li>value identifier {NAME}</li> <li>Search starts at given modifier or device if any, else at a verb</li> <li>Search starts at given verb if any, else current verb</li> <li>Searches modifier/device, then verb, then defaults</li> <li>Specify a leading "=" to search only the exact device/modifier/verb specified, and not search through each object in turn.</li> <li>Examples:<ul> <li>"PlaybackPCM/Play Music"</li> <li>"CapturePCM/SPDIF"</li> <li>From ValueDefaults only: "=Variable"</li> <li>From current active verb: "=Variable//"</li> <li>From verb "Verb": "=Variable//Verb"</li> <li>From "Modifier" in current active verb: "=Variable/Modifier/"</li> <li>From "Modifier" in "Verb": "=Variable/Modifier/Verb"</li> </ul> </li> </ul> </li> </ul> <p>Recommended names for values:</p> <ul> <li>TQ<ul> <li>Tone Quality</li> </ul> </li> <li>PlaybackPCM<ul> <li>full PCM playback device name</li> </ul> </li> <li>PlaybackPCMIsDummy<ul> <li>Valid values: "yes" and "no". If set to "yes", the PCM named by the PlaybackPCM value is a dummy device, meaning that opening it enables an audio path in the hardware, but writing to the PCM device has no effect.</li> </ul> </li> <li>CapturePCM<ul> <li>full PCM capture device name</li> </ul> </li> <li>CapturePCMIsDummy<ul> <li>Valid values: "yes" and "no". If set to "yes", the PCM named by the CapturePCM value is a dummy device, meaning that opening it enables an audio path in the hardware, but reading from the PCM device has no effect.</li> </ul> </li> <li>PlaybackRate<ul> <li>playback device sample rate</li> </ul> </li> <li>PlaybackChannels<ul> <li>playback device channel count</li> </ul> </li> <li>PlaybackCTL<ul> <li>playback control device name</li> </ul> </li> <li>PlaybackVolume<ul> <li>playback control volume ID string</li> </ul> </li> <li>PlaybackSwitch<ul> <li>playback control switch ID string</li> </ul> </li> <li>CaptureRate<ul> <li>capture device sample rate</li> </ul> </li> <li>CaptureChannels<ul> <li>capture device channel count</li> </ul> </li> <li>CaptureCTL<ul> <li>capture control device name</li> </ul> </li> <li>CaptureVolume<ul> <li>capture control volume ID string</li> </ul> </li> <li>CaptureSwitch<ul> <li>capture control switch ID string</li> </ul> </li> <li>PlaybackMixer<ul> <li>name of playback mixer</li> </ul> </li> <li>PlaybackMixerID<ul> <li>mixer playback ID</li> </ul> </li> <li>CaptureMixer<ul> <li>name of capture mixer</li> </ul> </li> <li>CaptureMixerID<ul> <li>mixer capture ID</li> </ul> </li> <li>JackControl, JackDev, JackHWMute<ul> <li><p class="startli">Jack information for a device. The jack status can be reported via a kcontrol and/or via an input device. <b>JackControl</b> is the kcontrol name of the jack, and <b>JackDev</b> is the input device id of the jack (if the full input device path is /dev/input/by-id/foo, the JackDev value should be "foo"). UCM configuration files should contain both JackControl and JackDev when possible, because applications are likely to support only one or the other.</p> <p class="startli">If <b>JackHWMute</b> is set, it indicates that when the jack is plugged in, the hardware automatically mutes some other device(s). The JackHWMute value is a space-separated list of device names (this isn't compatible with device names with spaces in them, so don't use such device names!). Note that JackHWMute should be used only when the hardware enforces the automatic muting. If the hardware doesn't enforce any muting, it may still be tempting to set JackHWMute to trick upper software layers to e.g. automatically mute speakers when headphones are plugged in, but that's application policy configuration that doesn't belong to UCM configuration files.</p> </li> </ul> </li> </ul> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> <tr><td class="paramname">value</td><td>Value pointer </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code</dd></dl> <p>Note: String is dynamically allocated, use free() to deallocate this string. </p> </div> </div> <a class="anchor" id="gaa128bcb412f42247e561b81ec342c2e1"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_get_list </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>identifier</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char ** </td> <td class="paramname"><em>list</em>[] </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Obtain a list of entries. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager (may be NULL - card list) </td></tr> <tr><td class="paramname">identifier</td><td>(may be NULL - card list) </td></tr> <tr><td class="paramname">list</td><td>Returned allocated list </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Number of list entries if success, otherwise a negative error code</dd></dl> <p>Defined identifiers:</p> <ul> <li>NULL - get card list (in pair cardname+comment)</li> <li>_verbs - get verb list (in pair verb+comment)</li> <li>_devices[/{verb}] - get list of supported devices (in pair device+comment)</li> <li>_modifiers[/{verb}] - get list of supported modifiers (in pair modifier+comment)</li> <li>TQ[/{verb}] - get list of TQ identifiers</li> <li>_enadevs - get list of enabled devices</li> <li>_enamods - get list of enabled modifiers</li> <li>_supporteddevs/{modifier}|{device}[/{verb}] - list of supported devices</li> <li>_conflictingdevs/{modifier}|{device}[/{verb}] - list of conflicting devices</li> </ul> <p>Note that at most one of the supported/conflicting devs lists has any entries, and when neither is present, all devices are supported.</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager (may be NULL - card list) </td></tr> <tr><td class="paramname">identifier</td><td>(may be NULL - card list) </td></tr> <tr><td class="paramname">list</td><td>Returned allocated list </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Number of list entries if success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="ga66311429dfd62743089be3eb79f1d1f5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_geti </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>identifier</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">long * </td> <td class="paramname"><em>value</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Get current - integer. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> <tr><td class="paramname">value</td><td>result </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code</dd></dl> <p>Known identifiers:</p> <ul> <li>_devstatus/{device} - return status for given device</li> <li>_modstatus/{modifier} - return status for given modifier</li> </ul> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Value if success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="ga530159363360c3cae3c9816c034fbcc5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">char* snd_use_case_identifier </td> <td>(</td> <td class="paramtype">const char * </td> <td class="paramname"><em>fmt</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"> </td> <td class="paramname"><em>...</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Create an identifier. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">fmt</td><td>Format (sprintf like) </td></tr> <tr><td class="paramname">...</td><td>Optional arguments for sprintf like format </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Allocated string identifier or NULL on error </dd></dl> </div> </div> <a class="anchor" id="gaac2bf25d233230d2d6a9e422795d716c"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_mgr_close </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Close use case manager. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if success, otherwise a negative error code</dd></dl> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero on success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="ga74f0ef0116590fe8eec1edeaf1d88847"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_mgr_open </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> ** </td> <td class="paramname"><em>uc_mgr</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>card_name</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Open and initialise use case core for sound card. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Returned use case manager pointer </td></tr> <tr><td class="paramname">card_name</td><td>Sound card name. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if success, otherwise a negative error code</dd></dl> <p>Open and initialise use case core for sound card.</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Returned use case manager pointer </td></tr> <tr><td class="paramname">card_name</td><td>name of card to open </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero on success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="gafedd1fc74ce9086033f6f668348321b4"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_mgr_reload </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Reload and re-parse use case configuration files for sound card. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if success, otherwise a negative error code</dd></dl> <p>Reload and re-parse use case configuration files for sound card.</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero on success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="ga1364dba503c216b2e46085a3f4abd20a"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_mgr_reset </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Reset use case manager verb, device, modifier to deafult settings. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero if success, otherwise a negative error code</dd></dl> <p>Reset use case manager verb, device, modifier to deafult settings.</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>zero on success, otherwise a negative error code </dd></dl> </div> </div> <a class="anchor" id="gae9ff2a06c955d40ad0204f21f8352831"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int snd_use_case_set </td> <td>(</td> <td class="paramtype"><a class="el" href="group__ucm.html#gace35ebd33e632cba9441762f6633a20e">snd_use_case_mgr_t</a> * </td> <td class="paramname"><em>uc_mgr</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>identifier</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"><em>value</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Set new. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> <tr><td class="paramname">value</td><td>Value </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code</dd></dl> <p>Known identifiers:</p> <ul> <li>_verb - set current verb = value</li> <li>_enadev - enable given device = value</li> <li>_disdev - disable given device = value</li> <li>_swdev/{old_device} - new_device = value<ul> <li>disable old_device and then enable new_device</li> <li>if old_device is not enabled just return</li> <li>check transmit sequence firstly</li> </ul> </li> <li>_enamod - enable given modifier = value</li> <li>_dismod - disable given modifier = value</li> <li>_swmod/{old_modifier} - new_modifier = value<ul> <li>disable old_modifier and then enable new_modifier</li> <li>if old_modifier is not enabled just return</li> <li>check transmit sequence firstly</li> </ul> </li> </ul> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">uc_mgr</td><td>Use case manager </td></tr> <tr><td class="paramname">identifier</td><td></td></tr> <tr><td class="paramname">value</td><td>Value </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Zero if success, otherwise a negative error code </dd></dl> </div> </div> </div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" 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