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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>ALSA project - the C library reference: Debug Functions</title>
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<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
</ul></div>
<h1>Debug Functions<br>
<small>
[<a class="el" href="group___p_c_m.html">PCM Interface</a>]</small>
</h1><table border="0" cellpadding="0" cellspacing="0">
<tbody><tr><td><br>
</td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#gb7eb3d2a4aa6f3e47ebd1e3833aeb8b7">snd_pcm_dump</a> (<a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> *pcm, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump PCM info. <a href="#gb7eb3d2a4aa6f3e47ebd1e3833aeb8b7"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#g701b888b6d87820db0a22c8c5a2dd82d">snd_pcm_dump_hw_setup</a> (<a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> *pcm, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump current hardware setup for PCM. <a href="#g701b888b6d87820db0a22c8c5a2dd82d"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#g9286c0977f1dbf7444b843e823d4206b">snd_pcm_dump_sw_setup</a> (<a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> *pcm, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump current software setup for PCM. <a href="#g9286c0977f1dbf7444b843e823d4206b"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#gae2eeeb3df99a6d8d35c51c6d02995ef">snd_pcm_dump_setup</a> (<a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> *pcm, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump current setup (hardware and software) for PCM. <a href="#gae2eeeb3df99a6d8d35c51c6d02995ef"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#g8d808218d13b78178748e152d724e4da">snd_pcm_hw_params_dump</a> (<a class="el" href="group___p_c_m.html#g232a2e2b6bb7bb2dca2885eec2e095b3">snd_pcm_hw_params_t</a> *params, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump a PCM hardware configuration space. <a href="#g8d808218d13b78178748e152d724e4da"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#g0566466e58d13cae7dafa266979cb237">snd_pcm_sw_params_dump</a> (<a class="el" href="group___p_c_m.html#g999c8c52d8a8d521f1f2cfcd902d7098">snd_pcm_sw_params_t</a> *params, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump a software configuration. <a href="#g0566466e58d13cae7dafa266979cb237"></a><br></td></tr>
<tr><td class="memItemLeft" align="right" nowrap="nowrap" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_c_m___dump.html#gf369962e048f072363e411cdf9bb27d7">snd_pcm_status_dump</a> (<a class="el" href="group___p_c_m.html#g1f281a9476a599d4f320297e3a07ec79">snd_pcm_status_t</a> *status, <a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> *out)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dump status. <a href="#gf369962e048f072363e411cdf9bb27d7"></a><br></td></tr>
</tbody></table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
See the <a class="el" href="pcm.html">PCM (digital audio) interface</a> page for more details. <hr><h2>Function Documentation</h2>
<a class="anchor" name="gb7eb3d2a4aa6f3e47ebd1e3833aeb8b7"></a><!-- doxytag: member="pcm.h::snd_pcm_dump" ref="gb7eb3d2a4aa6f3e47ebd1e3833aeb8b7" args="(snd_pcm_t *pcm, snd_output_t *out)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_dump </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> * </td>
<td class="paramname"> <em>pcm</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump PCM info.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>pcm</em> </td><td>PCM handle </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
<dl compact="compact"><dt><b>Examples: </b></dt><dd>
<a class="el" href="_2test_2latency_8c-example.html#a29">/test/latency.c</a>, and <a class="el" href="_2test_2pcm_8c-example.html#a67">/test/pcm.c</a>.</dd></dl>
</div>
</div><p>
<a class="anchor" name="g701b888b6d87820db0a22c8c5a2dd82d"></a><!-- doxytag: member="pcm.h::snd_pcm_dump_hw_setup" ref="g701b888b6d87820db0a22c8c5a2dd82d" args="(snd_pcm_t *pcm, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_dump_hw_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> * </td>
<td class="paramname"> <em>pcm</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump current hardware setup for PCM.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>pcm</em> </td><td>PCM handle </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div><p>
<a class="anchor" name="gae2eeeb3df99a6d8d35c51c6d02995ef"></a><!-- doxytag: member="pcm.h::snd_pcm_dump_setup" ref="gae2eeeb3df99a6d8d35c51c6d02995ef" args="(snd_pcm_t *pcm, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_dump_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> * </td>
<td class="paramname"> <em>pcm</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump current setup (hardware and software) for PCM.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>pcm</em> </td><td>PCM handle </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div><p>
<a class="anchor" name="g9286c0977f1dbf7444b843e823d4206b"></a><!-- doxytag: member="pcm.h::snd_pcm_dump_sw_setup" ref="g9286c0977f1dbf7444b843e823d4206b" args="(snd_pcm_t *pcm, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_dump_sw_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#gb5676348e7618b444e28907607660cef">snd_pcm_t</a> * </td>
<td class="paramname"> <em>pcm</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump current software setup for PCM.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>pcm</em> </td><td>PCM handle </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div><p>
<a class="anchor" name="g8d808218d13b78178748e152d724e4da"></a><!-- doxytag: member="pcm.h::snd_pcm_hw_params_dump" ref="g8d808218d13b78178748e152d724e4da" args="(snd_pcm_hw_params_t *params, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_hw_params_dump </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#g232a2e2b6bb7bb2dca2885eec2e095b3">snd_pcm_hw_params_t</a> * </td>
<td class="paramname"> <em>params</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump a PCM hardware configuration space.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>params</em> </td><td>Configuration space </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div><p>
<a class="anchor" name="gf369962e048f072363e411cdf9bb27d7"></a><!-- doxytag: member="pcm.h::snd_pcm_status_dump" ref="gf369962e048f072363e411cdf9bb27d7" args="(snd_pcm_status_t *status, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_status_dump </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#g1f281a9476a599d4f320297e3a07ec79">snd_pcm_status_t</a> * </td>
<td class="paramname"> <em>status</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump status.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>status</em> </td><td>Status container </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
<dl compact="compact"><dt><b>Examples: </b></dt><dd>
<a class="el" href="_2test_2latency_8c-example.html#a33">/test/latency.c</a>.</dd></dl>
</div>
</div><p>
<a class="anchor" name="g0566466e58d13cae7dafa266979cb237"></a><!-- doxytag: member="pcm.h::snd_pcm_sw_params_dump" ref="g0566466e58d13cae7dafa266979cb237" args="(snd_pcm_sw_params_t *params, snd_output_t *out)" -->
</p><div class="memitem">
<div class="memproto">
<table class="memname">
<tbody><tr>
<td class="memname">int snd_pcm_sw_params_dump </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group___p_c_m.html#g999c8c52d8a8d521f1f2cfcd902d7098">snd_pcm_sw_params_t</a> * </td>
<td class="paramname"> <em>params</em>, </td>
</tr>
<tr>
<td class="paramkey"><br>
</td>
<td><br>
</td>
<td class="paramtype"><a class="el" href="group___output.html#gfcb4f6ed600e8daf18d5d5d8623dda50">snd_output_t</a> * </td>
<td class="paramname"> <em>out</em></td><td> </td>
</tr>
<tr>
<td><br>
</td>
<td>)</td>
<td><br>
</td><td><br>
</td><td width="100%"><br>
</td>
</tr>
</tbody></table>
</div>
<div class="memdoc">
<p>
Dump a software configuration.
</p><p>
</p><dl compact="compact"><dt><b>Parameters:</b></dt><dd>
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="top"><br>
</td><td valign="top"><em>params</em> </td><td>Software configuration container </td></tr>
<tr><td valign="top"><br>
</td><td valign="top"><em>out</em> </td><td>Output handle </td></tr>
</tbody></table>
</dd></dl>
<dl class="return" compact="compact"><dt><b>Returns:</b></dt><dd>0 on success otherwise a negative error code </dd></dl>
</div>
</div><p>
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