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Files</h2></td></tr>
<tr class="memitem:control__ext_8c"><td class="memItemLeft" align="right" valign="top">file  </td><td class="memItemRight" valign="bottom"><a class="el" href="control__ext_8c.html">control_ext.c</a></td></tr>
<tr class="memdesc:control__ext_8c"><td class="mdescLeft"> </td><td class="mdescRight">External Control Plugin SDK. <br /></td></tr>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__ctl__ext.html">snd_ctl_ext_t</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structsnd__ctl__ext__callback.html">snd_ctl_ext_callback_t</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:gac015d294d7ae50614f6991da93893c3b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gac015d294d7ae50614f6991da93893c3b">SND_CTL_PLUGIN_ENTRY</a>(name)   _snd_ctl_##name##_open</td></tr>
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<tr class="memitem:gaa94fc65e8951f16e4b273b0f81e90f7e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gaa94fc65e8951f16e4b273b0f81e90f7e">SND_CTL_PLUGIN_SYMBOL</a>(name)   <a class="el" href="group___global.html#ga355c462c8c5dee0aeadae17d096ba531">SND_DLSYM_BUILD_VERSION</a>(<a class="el" href="group___ctl_plugin___s_d_k.html#gac015d294d7ae50614f6991da93893c3b">SND_CTL_PLUGIN_ENTRY</a>(name), <a class="el" href="group___control.html#ga2dc20c3f1d96252ba1f5563cfede392d">SND_CONTROL_DLSYM_VERSION</a>);</td></tr>
<tr class="separator:gaa94fc65e8951f16e4b273b0f81e90f7e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga13e494fe5c6068d6608a974f5a62a430"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga13e494fe5c6068d6608a974f5a62a430">SND_CTL_PLUGIN_DEFINE_FUNC</a>(plugin)</td></tr>
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<tr class="memitem:ga110bc1818d56d22b89e2773d7c54a115"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga110bc1818d56d22b89e2773d7c54a115">SND_CTL_EXT_VERSION_MAJOR</a>   1</td></tr>
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<tr class="memitem:ga9ace8ce6f67297cba3bb365b600c8bd8"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga9ace8ce6f67297cba3bb365b600c8bd8">SND_CTL_EXT_VERSION_MINOR</a>   0</td></tr>
<tr class="separator:ga9ace8ce6f67297cba3bb365b600c8bd8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae99e1c9ee4d5c9e9afaa0376a2af96eb"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gae99e1c9ee4d5c9e9afaa0376a2af96eb">SND_CTL_EXT_VERSION_TINY</a>   1</td></tr>
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<tr class="memitem:ga65ea29f84b09ee3e640f88b06d05a1a2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga65ea29f84b09ee3e640f88b06d05a1a2">SND_CTL_EXT_VERSION</a></td></tr>
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<tr class="memitem:gac1f0737189a30bbb1e4dcbf681df39fd"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gac1f0737189a30bbb1e4dcbf681df39fd">SND_CTL_EXT_KEY_NOT_FOUND</a>   (<a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a>)(-1)</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gac73a66a3973afb51c4e585177647c693"><td class="memItemLeft" align="right" valign="top">typedef unsigned long </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a></td></tr>
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<tr class="memitem:ga6e8d1fd87ddef00af5a9e2dd6c77b1db"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="structsnd__ctl__ext.html">snd_ctl_ext</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a></td></tr>
<tr class="separator:ga6e8d1fd87ddef00af5a9e2dd6c77b1db"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga8185c9a0e27e9562511a82dda1d20ddf"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="structsnd__ctl__ext__callback.html">snd_ctl_ext_callback</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga8185c9a0e27e9562511a82dda1d20ddf">snd_ctl_ext_callback_t</a></td></tr>
<tr class="separator:ga8185c9a0e27e9562511a82dda1d20ddf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga51b74c20889bc3b81f5abc434a2267d0"><td class="memItemLeft" align="right" valign="top">typedef int() </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga51b74c20889bc3b81f5abc434a2267d0">snd_ctl_ext_tlv_rw_t</a>(<a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> *ext, <a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a> key, int op_flag, unsigned int numid, unsigned int *tlv, unsigned int tlv_size)</td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:gaeedd1d7413b3025e9cede1b27e509de5"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#gaeedd1d7413b3025e9cede1b27e509de5">snd_ctl_ext_access_t</a> { <br />
  <b>SND_CTL_EXT_ACCESS_READ</b> = (1<<0)
, <b>SND_CTL_EXT_ACCESS_WRITE</b> = (1<<1)
, <b>SND_CTL_EXT_ACCESS_READWRITE</b> = (3<<0)
, <b>SND_CTL_EXT_ACCESS_VOLATILE</b> = (1<<2)
, <br />
  <b>SND_CTL_EXT_ACCESS_TLV_READ</b> = (1<<4)
, <b>SND_CTL_EXT_ACCESS_TLV_WRITE</b> = (1<<5)
, <b>SND_CTL_EXT_ACCESS_TLV_READWRITE</b> = (3<<4)
, <b>SND_CTL_EXT_ACCESS_TLV_COMMAND</b> = (1<<6)
, <br />
  <b>SND_CTL_EXT_ACCESS_INACTIVE</b> = (1<<8)
, <b>SND_CTL_EXT_ACCESS_TLV_CALLBACK</b> = (1<<28)
<br />
}</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga317775f9c5e239781e71735ca5ba1ca6"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga317775f9c5e239781e71735ca5ba1ca6">snd_ctl_ext_create</a> (<a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> *ext, const char *name, int mode)</td></tr>
<tr class="memdesc:ga317775f9c5e239781e71735ca5ba1ca6"><td class="mdescLeft"> </td><td class="mdescRight">Create an external control plugin instance. <a href="group___ctl_plugin___s_d_k.html#ga317775f9c5e239781e71735ca5ba1ca6">More...</a><br /></td></tr>
<tr class="separator:ga317775f9c5e239781e71735ca5ba1ca6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga33fadf68f6414722876f21201214f76e"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___ctl_plugin___s_d_k.html#ga33fadf68f6414722876f21201214f76e">snd_ctl_ext_delete</a> (<a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> *ext)</td></tr>
<tr class="memdesc:ga33fadf68f6414722876f21201214f76e"><td class="mdescLeft"> </td><td class="mdescRight">Delete the external control plugin. <a href="group___ctl_plugin___s_d_k.html#ga33fadf68f6414722876f21201214f76e">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="gac1f0737189a30bbb1e4dcbf681df39fd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac1f0737189a30bbb1e4dcbf681df39fd">◆ </a></span>SND_CTL_EXT_KEY_NOT_FOUND</h2>
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<td class="memname">#define SND_CTL_EXT_KEY_NOT_FOUND   (<a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a>)(-1)</td>
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<p>find_elem callback returns this if no matching control element is found </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga65ea29f84b09ee3e640f88b06d05a1a2">◆ </a></span>SND_CTL_EXT_VERSION</h2>
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<td class="memname">#define SND_CTL_EXT_VERSION</td>
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<b>Value:</b><div class="fragment"><div class="line"> ((<a class="code" href="group___ctl_plugin___s_d_k.html#ga110bc1818d56d22b89e2773d7c54a115">SND_CTL_EXT_VERSION_MAJOR</a><<16) |\</div>
<div class="line"> (<a class="code" href="group___ctl_plugin___s_d_k.html#ga9ace8ce6f67297cba3bb365b600c8bd8">SND_CTL_EXT_VERSION_MINOR</a><<8) |\</div>
<div class="line"> (<a class="code" href="group___ctl_plugin___s_d_k.html#gae99e1c9ee4d5c9e9afaa0376a2af96eb">SND_CTL_EXT_VERSION_TINY</a>))</div>
<div class="ttc" id="agroup___ctl_plugin___s_d_k_html_ga110bc1818d56d22b89e2773d7c54a115"><div class="ttname"><a href="group___ctl_plugin___s_d_k.html#ga110bc1818d56d22b89e2773d7c54a115">SND_CTL_EXT_VERSION_MAJOR</a></div><div class="ttdeci">#define SND_CTL_EXT_VERSION_MAJOR</div><div class="ttdef"><b>Definition:</b> control_external.h:75</div></div>
<div class="ttc" id="agroup___ctl_plugin___s_d_k_html_ga9ace8ce6f67297cba3bb365b600c8bd8"><div class="ttname"><a href="group___ctl_plugin___s_d_k.html#ga9ace8ce6f67297cba3bb365b600c8bd8">SND_CTL_EXT_VERSION_MINOR</a></div><div class="ttdeci">#define SND_CTL_EXT_VERSION_MINOR</div><div class="ttdef"><b>Definition:</b> control_external.h:76</div></div>
<div class="ttc" id="agroup___ctl_plugin___s_d_k_html_gae99e1c9ee4d5c9e9afaa0376a2af96eb"><div class="ttname"><a href="group___ctl_plugin___s_d_k.html#gae99e1c9ee4d5c9e9afaa0376a2af96eb">SND_CTL_EXT_VERSION_TINY</a></div><div class="ttdeci">#define SND_CTL_EXT_VERSION_TINY</div><div class="ttdef"><b>Definition:</b> control_external.h:77</div></div>
</div><!-- fragment --><p>external plugin protocol version </p>
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<a id="ga110bc1818d56d22b89e2773d7c54a115"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga110bc1818d56d22b89e2773d7c54a115">◆ </a></span>SND_CTL_EXT_VERSION_MAJOR</h2>
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<td class="memname">#define SND_CTL_EXT_VERSION_MAJOR   1</td>
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<p>Protocol major version </p>
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<a id="ga9ace8ce6f67297cba3bb365b600c8bd8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga9ace8ce6f67297cba3bb365b600c8bd8">◆ </a></span>SND_CTL_EXT_VERSION_MINOR</h2>
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<td class="memname">#define SND_CTL_EXT_VERSION_MINOR   0</td>
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<p>Protocol minor version </p>
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<a id="gae99e1c9ee4d5c9e9afaa0376a2af96eb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae99e1c9ee4d5c9e9afaa0376a2af96eb">◆ </a></span>SND_CTL_EXT_VERSION_TINY</h2>
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<td class="memname">#define SND_CTL_EXT_VERSION_TINY   1</td>
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<p>Protocol tiny version </p>
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<a id="ga13e494fe5c6068d6608a974f5a62a430"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga13e494fe5c6068d6608a974f5a62a430">◆ </a></span>SND_CTL_PLUGIN_DEFINE_FUNC</h2>
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<td class="memname">#define SND_CTL_PLUGIN_DEFINE_FUNC</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">plugin</td><td>)</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="keywordtype">int</span> <a class="code" href="group___ctl_plugin___s_d_k.html#gac015d294d7ae50614f6991da93893c3b">SND_CTL_PLUGIN_ENTRY</a>(plugin) (<a class="code" href="group___control.html#ga06628f38def84a0fe3da74041db9d51f">snd_ctl_t</a> **handlep, <span class="keyword">const</span> <span class="keywordtype">char</span> *name,\</div>
<div class="line"> snd_config_t *root, <a class="code" href="group___configuration.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a> *conf, <span class="keywordtype">int</span> mode)</div>
<div class="ttc" id="agroup___configuration_html_ga1c20905af775ae77d04d1a5696f67985"><div class="ttname"><a href="group___configuration.html#ga1c20905af775ae77d04d1a5696f67985">snd_config_t</a></div><div class="ttdeci">struct _snd_config snd_config_t</div><div class="ttdoc">Internal structure for a configuration node object.</div><div class="ttdef"><b>Definition:</b> conf.h:69</div></div>
<div class="ttc" id="agroup___control_html_ga06628f38def84a0fe3da74041db9d51f"><div class="ttname"><a href="group___control.html#ga06628f38def84a0fe3da74041db9d51f">snd_ctl_t</a></div><div class="ttdeci">struct _snd_ctl snd_ctl_t</div><div class="ttdef"><b>Definition:</b> control.h:363</div></div>
<div class="ttc" id="agroup___ctl_plugin___s_d_k_html_gac015d294d7ae50614f6991da93893c3b"><div class="ttname"><a href="group___ctl_plugin___s_d_k.html#gac015d294d7ae50614f6991da93893c3b">SND_CTL_PLUGIN_ENTRY</a></div><div class="ttdeci">#define SND_CTL_PLUGIN_ENTRY(name)</div><div class="ttdef"><b>Definition:</b> control_external.h:43</div></div>
</div><!-- fragment --><p>Define the control plugin </p>
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<a id="gac015d294d7ae50614f6991da93893c3b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac015d294d7ae50614f6991da93893c3b">◆ </a></span>SND_CTL_PLUGIN_ENTRY</h2>
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<td class="memname">#define SND_CTL_PLUGIN_ENTRY</td>
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<td class="paramname">name</td><td>)</td>
<td>   _snd_ctl_##name##_open</td>
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<p>Define the object entry for external control plugins </p>
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<a id="gaa94fc65e8951f16e4b273b0f81e90f7e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa94fc65e8951f16e4b273b0f81e90f7e">◆ </a></span>SND_CTL_PLUGIN_SYMBOL</h2>
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<td class="memname">#define SND_CTL_PLUGIN_SYMBOL</td>
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<td class="paramname">name</td><td>)</td>
<td>   <a class="el" href="group___global.html#ga355c462c8c5dee0aeadae17d096ba531">SND_DLSYM_BUILD_VERSION</a>(<a class="el" href="group___ctl_plugin___s_d_k.html#gac015d294d7ae50614f6991da93893c3b">SND_CTL_PLUGIN_ENTRY</a>(name), <a class="el" href="group___control.html#ga2dc20c3f1d96252ba1f5563cfede392d">SND_CONTROL_DLSYM_VERSION</a>);</td>
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<p>Define the symbols of the given control plugin with versions </p>
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<h2 class="groupheader">Typedef Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8185c9a0e27e9562511a82dda1d20ddf">◆ </a></span>snd_ctl_ext_callback_t</h2>
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<td class="memname">typedef struct <a class="el" href="structsnd__ctl__ext__callback.html">snd_ctl_ext_callback</a> <a class="el" href="group___ctl_plugin___s_d_k.html#ga8185c9a0e27e9562511a82dda1d20ddf">snd_ctl_ext_callback_t</a></td>
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<p>Callback table of control ext </p>
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<a id="gac73a66a3973afb51c4e585177647c693"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac73a66a3973afb51c4e585177647c693">◆ </a></span>snd_ctl_ext_key_t</h2>
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<td class="memname">typedef unsigned long <a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a></td>
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<p>Key to access a control pointer </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">◆ </a></span>snd_ctl_ext_t</h2>
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<td class="memname">typedef struct <a class="el" href="structsnd__ctl__ext.html">snd_ctl_ext</a> <a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a></td>
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<p>External control plugin handle </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga51b74c20889bc3b81f5abc434a2267d0">◆ </a></span>snd_ctl_ext_tlv_rw_t</h2>
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<td class="memname">typedef int() snd_ctl_ext_tlv_rw_t(<a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> *ext, <a class="el" href="group___ctl_plugin___s_d_k.html#gac73a66a3973afb51c4e585177647c693">snd_ctl_ext_key_t</a> key, int op_flag, unsigned int numid, unsigned int *tlv, unsigned int tlv_size)</td>
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<p>Callback to handle TLV commands. </p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gaeedd1d7413b3025e9cede1b27e509de5">◆ </a></span>snd_ctl_ext_access_t</h2>
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<td class="memname">enum <a class="el" href="group___ctl_plugin___s_d_k.html#gaeedd1d7413b3025e9cede1b27e509de5">snd_ctl_ext_access_t</a></td>
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<p>The access type bits stored in get_attribute callback </p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga317775f9c5e239781e71735ca5ba1ca6">◆ </a></span>snd_ctl_ext_create()</h2>
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<td class="memname">int snd_ctl_ext_create </td>
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<td class="paramtype"><a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> * </td>
<td class="paramname"><em>ext</em>, </td>
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<td class="paramtype">const char * </td>
<td class="paramname"><em>name</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>mode</em> </td>
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<p>Create an external control plugin instance. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">ext</td><td>the plugin handle </td></tr>
<tr><td class="paramname">name</td><td>name of control </td></tr>
<tr><td class="paramname">mode</td><td>control open mode </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>0 if successful, or a negative error code</dd></dl>
<p>Creates the external control instance. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga33fadf68f6414722876f21201214f76e">◆ </a></span>snd_ctl_ext_delete()</h2>
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<td class="memname">int snd_ctl_ext_delete </td>
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<td class="paramtype"><a class="el" href="group___ctl_plugin___s_d_k.html#ga6e8d1fd87ddef00af5a9e2dd6c77b1db">snd_ctl_ext_t</a> * </td>
<td class="paramname"><em>ext</em></td><td>)</td>
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<p>Delete the external control plugin. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">ext</td><td>the plugin handle </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>0 if successful, or a negative error code </dd></dl>
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