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<a href="#nested-classes">Data Structures</a> |
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<div class="title">Scope Plugin Extension<div class="ingroups"><a class="el" href="group___p_c_m.html">PCM Interface</a></div></div> </div>
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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__pcm__scope__ops__t.html">snd_pcm_scope_ops_t</a></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce">snd_pcm_meter_get_bufsize</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm)</td></tr>
<tr class="memdesc:ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce"><td class="mdescLeft"> </td><td class="mdescRight">Get meter buffer size from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce">More...</a><br /></td></tr>
<tr class="separator:ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaeb0f82c12f8a1e57f4b6b09ad324f3ed"><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gaeb0f82c12f8a1e57f4b6b09ad324f3ed">snd_pcm_meter_get_channels</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm)</td></tr>
<tr class="memdesc:gaeb0f82c12f8a1e57f4b6b09ad324f3ed"><td class="mdescLeft"> </td><td class="mdescRight">Get meter channels from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#gaeb0f82c12f8a1e57f4b6b09ad324f3ed">More...</a><br /></td></tr>
<tr class="separator:gaeb0f82c12f8a1e57f4b6b09ad324f3ed"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga8c95279cba00918b29671205e38f3e78"><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga8c95279cba00918b29671205e38f3e78">snd_pcm_meter_get_rate</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm)</td></tr>
<tr class="memdesc:ga8c95279cba00918b29671205e38f3e78"><td class="mdescLeft"> </td><td class="mdescRight">Get meter rate from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#ga8c95279cba00918b29671205e38f3e78">More...</a><br /></td></tr>
<tr class="separator:ga8c95279cba00918b29671205e38f3e78"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa4929399573ca0e24b71a22b51d7f108"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gaa4929399573ca0e24b71a22b51d7f108">snd_pcm_meter_get_now</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm)</td></tr>
<tr class="memdesc:gaa4929399573ca0e24b71a22b51d7f108"><td class="mdescLeft"> </td><td class="mdescRight">Get meter "now" frame pointer from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#gaa4929399573ca0e24b71a22b51d7f108">More...</a><br /></td></tr>
<tr class="separator:gaa4929399573ca0e24b71a22b51d7f108"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga543fd7565c138f1a408ec55186725908"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga543fd7565c138f1a408ec55186725908">snd_pcm_meter_get_boundary</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm)</td></tr>
<tr class="memdesc:ga543fd7565c138f1a408ec55186725908"><td class="mdescLeft"> </td><td class="mdescRight">Get boundary for frame pointers from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#ga543fd7565c138f1a408ec55186725908">More...</a><br /></td></tr>
<tr class="separator:ga543fd7565c138f1a408ec55186725908"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae37aa1c3ce01063b9047e0bd437ef749"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gae37aa1c3ce01063b9047e0bd437ef749">snd_pcm_meter_add_scope</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm, <a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope)</td></tr>
<tr class="memdesc:gae37aa1c3ce01063b9047e0bd437ef749"><td class="mdescLeft"> </td><td class="mdescRight">Add a scope to a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#gae37aa1c3ce01063b9047e0bd437ef749">More...</a><br /></td></tr>
<tr class="separator:gae37aa1c3ce01063b9047e0bd437ef749"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabb6cacf50cf10cb6e95853dadd19234f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gabb6cacf50cf10cb6e95853dadd19234f">snd_pcm_meter_search_scope</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm, const char *name)</td></tr>
<tr class="memdesc:gabb6cacf50cf10cb6e95853dadd19234f"><td class="mdescLeft"> </td><td class="mdescRight">Search an installed scope inside a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#gabb6cacf50cf10cb6e95853dadd19234f">More...</a><br /></td></tr>
<tr class="separator:gabb6cacf50cf10cb6e95853dadd19234f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga360da60e074bffc146ffee93f8e79aa7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga360da60e074bffc146ffee93f8e79aa7">snd_pcm_scope_malloc</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> **<a class="el" href="seq__event_8h.html#add9af9569af79ec26dd741fb226b38ba">ptr</a>)</td></tr>
<tr class="memdesc:ga360da60e074bffc146ffee93f8e79aa7"><td class="mdescLeft"> </td><td class="mdescRight">allocate an invalid <a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> using standard malloc <a href="#ga360da60e074bffc146ffee93f8e79aa7">More...</a><br /></td></tr>
<tr class="separator:ga360da60e074bffc146ffee93f8e79aa7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabaf2af40ecc689cee2e81b9250823fcd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gabaf2af40ecc689cee2e81b9250823fcd">snd_pcm_scope_set_ops</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope, const <a class="el" href="structsnd__pcm__scope__ops__t.html">snd_pcm_scope_ops_t</a> *val)</td></tr>
<tr class="memdesc:gabaf2af40ecc689cee2e81b9250823fcd"><td class="mdescLeft"> </td><td class="mdescRight">Set callbacks for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. <a href="#gabaf2af40ecc689cee2e81b9250823fcd">More...</a><br /></td></tr>
<tr class="separator:gabaf2af40ecc689cee2e81b9250823fcd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaae1d6cce40b244180c54b72aee0e00d2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gaae1d6cce40b244180c54b72aee0e00d2">snd_pcm_scope_set_name</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope, const char *val)</td></tr>
<tr class="memdesc:gaae1d6cce40b244180c54b72aee0e00d2"><td class="mdescLeft"> </td><td class="mdescRight">Set name of a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. <a href="#gaae1d6cce40b244180c54b72aee0e00d2">More...</a><br /></td></tr>
<tr class="separator:gaae1d6cce40b244180c54b72aee0e00d2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaff680f85a1f30c83b4b544ead5ff5a2a"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gaff680f85a1f30c83b4b544ead5ff5a2a">snd_pcm_scope_get_name</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope)</td></tr>
<tr class="memdesc:gaff680f85a1f30c83b4b544ead5ff5a2a"><td class="mdescLeft"> </td><td class="mdescRight">Get name of a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. <a href="#gaff680f85a1f30c83b4b544ead5ff5a2a">More...</a><br /></td></tr>
<tr class="separator:gaff680f85a1f30c83b4b544ead5ff5a2a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gada4e9d2bfe2f7dc2b638c6406b9a4b26"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gada4e9d2bfe2f7dc2b638c6406b9a4b26">snd_pcm_scope_get_callback_private</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope)</td></tr>
<tr class="memdesc:gada4e9d2bfe2f7dc2b638c6406b9a4b26"><td class="mdescLeft"> </td><td class="mdescRight">Get callbacks private value for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. <a href="#gada4e9d2bfe2f7dc2b638c6406b9a4b26">More...</a><br /></td></tr>
<tr class="separator:gada4e9d2bfe2f7dc2b638c6406b9a4b26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga683ced3c9344b8f6f8aab4997f74f72d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga683ced3c9344b8f6f8aab4997f74f72d">snd_pcm_scope_set_callback_private</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope, void *val)</td></tr>
<tr class="memdesc:ga683ced3c9344b8f6f8aab4997f74f72d"><td class="mdescLeft"> </td><td class="mdescRight">Get callbacks private value for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. <a href="#ga683ced3c9344b8f6f8aab4997f74f72d">More...</a><br /></td></tr>
<tr class="separator:ga683ced3c9344b8f6f8aab4997f74f72d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga3c1e3e9c3a5a99915de23bbd2635ae26"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#ga3c1e3e9c3a5a99915de23bbd2635ae26">snd_pcm_scope_s16_open</a> (<a class="el" href="group___p_c_m.html#ga919e634deecd855b6e2e15174e70d3ea">snd_pcm_t</a> *pcm, const char *name, <a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> **scopep)</td></tr>
<tr class="memdesc:ga3c1e3e9c3a5a99915de23bbd2635ae26"><td class="mdescLeft"> </td><td class="mdescRight">Add a s16 pseudo scope to a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. <a href="#ga3c1e3e9c3a5a99915de23bbd2635ae26">More...</a><br /></td></tr>
<tr class="separator:ga3c1e3e9c3a5a99915de23bbd2635ae26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac4297c74f130a89992459cbbc5ab029b"><td class="memItemLeft" align="right" valign="top">int16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___scope.html#gac4297c74f130a89992459cbbc5ab029b">snd_pcm_scope_s16_get_channel_buffer</a> (<a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> *scope, unsigned int channel)</td></tr>
<tr class="memdesc:gac4297c74f130a89992459cbbc5ab029b"><td class="mdescLeft"> </td><td class="mdescRight">Get s16 pseudo scope frames buffer for a channel. <a href="#gac4297c74f130a89992459cbbc5ab029b">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>See the <a class="el" href="pcm.html">PCM (digital audio) interface</a> page for more details. </p>
<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">int snd_pcm_meter_add_scope </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>pcm</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Add a scope to a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
<tr><td class="paramname">scope</td><td>Scope handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ga543fd7565c138f1a408ec55186725908"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_meter_get_boundary </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>pcm</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get boundary for frame pointers from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>boundary in frames </dd></dl>
</div>
</div>
<a class="anchor" id="ga39a4a1f88cd8b5e474d3d1d6f8e3a8ce"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_meter_get_bufsize </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>pcm</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get meter buffer size from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>meter buffer size in frames </dd></dl>
</div>
</div>
<a class="anchor" id="gaeb0f82c12f8a1e57f4b6b09ad324f3ed"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_meter_get_channels </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>pcm</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get meter channels from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>meter channels count </dd></dl>
</div>
</div>
<a class="anchor" id="gaa4929399573ca0e24b71a22b51d7f108"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#gab01fcfe9b97382a8d3f2027c664b8b8a">snd_pcm_uframes_t</a> snd_pcm_meter_get_now </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>pcm</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get meter "now" frame pointer from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>"now" frame pointer in frames (0 ... boundary - 1) see <a class="el" href="group___p_c_m___scope.html#ga543fd7565c138f1a408ec55186725908" title="Get boundary for frame pointers from a SND_PCM_TYPE_METER PCM. ">snd_pcm_meter_get_boundary</a> </dd></dl>
</div>
</div>
<a class="anchor" id="ga8c95279cba00918b29671205e38f3e78"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">unsigned int snd_pcm_meter_get_rate </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>pcm</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get meter rate from a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>approximate rate </dd></dl>
</div>
</div>
<a class="anchor" id="gabb6cacf50cf10cb6e95853dadd19234f"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a>* snd_pcm_meter_search_scope </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>pcm</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></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Search an installed scope inside a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>PCM handle </td></tr>
<tr><td class="paramname">name</td><td>scope name </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>pointer to found scope or NULL if none is found </dd></dl>
</div>
</div>
<a class="anchor" id="gada4e9d2bfe2f7dc2b638c6406b9a4b26"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void* snd_pcm_scope_get_callback_private </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get callbacks private value for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>PCM meter scope </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Private data value </dd></dl>
</div>
</div>
<a class="anchor" id="gaff680f85a1f30c83b4b544ead5ff5a2a"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const char* snd_pcm_scope_get_name </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get name of a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>PCM meter scope </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>scope name </dd></dl>
</div>
</div>
<a class="anchor" id="ga360da60e074bffc146ffee93f8e79aa7"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int snd_pcm_scope_malloc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> ** </td>
<td class="paramname"><em>ptr</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>allocate an invalid <a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> using standard malloc </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td>returned pointer </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success otherwise negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="gac4297c74f130a89992459cbbc5ab029b"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int16_t* snd_pcm_scope_s16_get_channel_buffer </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>channel</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get s16 pseudo scope frames buffer for a channel. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>s16 pseudo scope handle </td></tr>
<tr><td class="paramname">channel</td><td>Channel </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Pointer to channel buffer </dd></dl>
</div>
</div>
<a class="anchor" id="ga3c1e3e9c3a5a99915de23bbd2635ae26"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int snd_pcm_scope_s16_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>pcm</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#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> ** </td>
<td class="paramname"><em>scopep</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Add a s16 pseudo scope to a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pcm</td><td>The pcm handle </td></tr>
<tr><td class="paramname">name</td><td>Scope name </td></tr>
<tr><td class="paramname">scopep</td><td>Pointer to newly created and added scope </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success otherwise a negative error code</dd></dl>
<p>s16 pseudo scope convert <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM frames in CPU endian 16 bit frames for use with other scopes. Don't forget to insert it before and to not insert it more time (see <a class="el" href="group___p_c_m___scope.html#gabb6cacf50cf10cb6e95853dadd19234f" title="Search an installed scope inside a SND_PCM_TYPE_METER PCM. ">snd_pcm_meter_search_scope</a>) </p>
</div>
</div>
<a class="anchor" id="ga683ced3c9344b8f6f8aab4997f74f72d"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void snd_pcm_scope_set_callback_private </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Get callbacks private value for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>PCM meter scope </td></tr>
<tr><td class="paramname">val</td><td>Private data value </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaae1d6cce40b244180c54b72aee0e00d2"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void snd_pcm_scope_set_name </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Set name of a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>PCM meter scope </td></tr>
<tr><td class="paramname">val</td><td>scope name </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gabaf2af40ecc689cee2e81b9250823fcd"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void snd_pcm_scope_set_ops </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#ga3cd150b8aa57e634e1e1dd914940c765">snd_pcm_scope_t</a> * </td>
<td class="paramname"><em>scope</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="structsnd__pcm__scope__ops__t.html">snd_pcm_scope_ops_t</a> * </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Set callbacks for a <a class="el" href="group___p_c_m.html#gga060d5b81f2fc8efcc35ff3e1de6e9fa4a415afb5482d35b38837035a6dd82b39d">SND_PCM_TYPE_METER</a> PCM scope. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">scope</td><td>PCM meter scope </td></tr>
<tr><td class="paramname">val</td><td>callbacks </td></tr>
</table>
</dd>
</dl>
</div>
</div>
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