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<div id="projectname">PulseAudio
 <span id="projectnumber">2.1</span>
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<div class="title">parec-simple.c</div> </div>
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<p>A simple recording tool using the simple API</p>
<div class="fragment"><div class="line"><span class="comment">/***</span></div>
<div class="line"><span class="comment"> This file is part of PulseAudio.</span></div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment"> PulseAudio is free software; you can redistribute it and/or modify</span></div>
<div class="line"><span class="comment"> it under the terms of the GNU Lesser General Public License as published</span></div>
<div class="line"><span class="comment"> by the Free Software Foundation; either version 2.1 of the License,</span></div>
<div class="line"><span class="comment"> or (at your option) any later version.</span></div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment"> PulseAudio is distributed in the hope that it will be useful, but</span></div>
<div class="line"><span class="comment"> WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><span class="comment"> General Public License for more details.</span></div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment"> You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><span class="comment"> along with PulseAudio; if not, write to the Free Software</span></div>
<div class="line"><span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307</span></div>
<div class="line"><span class="comment"> USA.</span></div>
<div class="line"><span class="comment">***/</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#ifdef HAVE_CONFIG_H</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#include <config.h></span></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><span class="preprocessor">#include <unistd.h></span></div>
<div class="line"><span class="preprocessor">#include <string.h></span></div>
<div class="line"><span class="preprocessor">#include <errno.h></span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="simple_8h.html" title="A simple but limited synchronous playback and recording API.">pulse/simple.h</a>></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="error_8h.html" title="Error management.">pulse/error.h</a>></span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#define BUFSIZE 1024</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="comment">/* A simple routine calling UNIX write() in a loop */</span></div>
<div class="line"><span class="keyword">static</span> ssize_t loop_write(<span class="keywordtype">int</span> fd, <span class="keyword">const</span> <span class="keywordtype">void</span>*data, <span class="keywordtype">size_t</span> size) {</div>
<div class="line"> ssize_t ret = 0;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">while</span> (size > 0) {</div>
<div class="line"> ssize_t r;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> ((r = write(fd, data, size)) < 0)</div>
<div class="line"> <span class="keywordflow">return</span> r;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (r == 0)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"></div>
<div class="line"> ret += r;</div>
<div class="line"> data = (<span class="keyword">const</span> uint8_t*) data + r;</div>
<div class="line"> size -= (size_t) r;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>*argv[]) {</div>
<div class="line"> <span class="comment">/* The sample type to use */</span></div>
<div class="line"> <span class="keyword">static</span> <span class="keyword">const</span> <a name="_a0"></a><a class="code" href="structpa__sample__spec.html" title="A sample format and attribute specification.">pa_sample_spec</a> ss = {</div>
<div class="line"> .<a name="a1"></a><a class="code" href="structpa__sample__spec.html#a6f37954f1b7ac9d9bff4683171a10a99" title="The sample format.">format</a> = <a name="a2"></a><a class="code" href="sample_8h.html#a3c622fc51f4fc6ebfdcc7b454ac9c05fa50e4a2b43c258e559fa9d252275131ce" title="Signed 16 Bit PCM, little endian (PC)">PA_SAMPLE_S16LE</a>,</div>
<div class="line"> .rate = 44100,</div>
<div class="line"> .channels = 2</div>
<div class="line"> };</div>
<div class="line"> <a name="_a3"></a><a class="code" href="structpa__simple.html" title="An opaque simple connection object.">pa_simple</a> *s = NULL;</div>
<div class="line"> <span class="keywordtype">int</span> ret = 1;</div>
<div class="line"> <span class="keywordtype">int</span> error;</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Create the recording stream */</span></div>
<div class="line"> <span class="keywordflow">if</span> (!(s = <a name="a4"></a><a class="code" href="simple_8h.html#add9a7dce4e15955d4296726c26206689" title="Create a new connection to the server.">pa_simple_new</a>(NULL, argv[0], <a name="a5"></a><a class="code" href="def_8h.html#a7311932553b3f7962a092906576bc347a68e8f73b865d14e172cc45db4ad3aaf7" title="Record stream.">PA_STREAM_RECORD</a>, NULL, <span class="stringliteral">"record"</span>, &ss, NULL, NULL, &error))) {</div>
<div class="line"> fprintf(stderr, __FILE__<span class="stringliteral">": pa_simple_new() failed: %s\n"</span>, <a name="a6"></a><a class="code" href="error_8h.html#a593deb681fba75fad4b3a2d65d0ac2b2" title="Return a human readable error message for the specified numeric error code.">pa_strerror</a>(error));</div>
<div class="line"> <span class="keywordflow">goto</span> finish;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">for</span> (;;) {</div>
<div class="line"> uint8_t buf[BUFSIZE];</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Record some data ... */</span></div>
<div class="line"> <span class="keywordflow">if</span> (<a name="a7"></a><a class="code" href="simple_8h.html#a7d4d4e332b03f6525969241def7f822f" title="Read some data from the server.">pa_simple_read</a>(s, buf, <span class="keyword">sizeof</span>(buf), &error) < 0) {</div>
<div class="line"> fprintf(stderr, __FILE__<span class="stringliteral">": pa_simple_read() failed: %s\n"</span>, <a class="code" href="error_8h.html#a593deb681fba75fad4b3a2d65d0ac2b2" title="Return a human readable error message for the specified numeric error code.">pa_strerror</a>(error));</div>
<div class="line"> <span class="keywordflow">goto</span> finish;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* And write it to STDOUT */</span></div>
<div class="line"> <span class="keywordflow">if</span> (loop_write(STDOUT_FILENO, buf, <span class="keyword">sizeof</span>(buf)) != <span class="keyword">sizeof</span>(buf)) {</div>
<div class="line"> fprintf(stderr, __FILE__<span class="stringliteral">": write() failed: %s\n"</span>, strerror(errno));</div>
<div class="line"> <span class="keywordflow">goto</span> finish;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> ret = 0;</div>
<div class="line"></div>
<div class="line">finish:</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (s)</div>
<div class="line"> <a name="a8"></a><a class="code" href="simple_8h.html#ad66a88bc23d2a54542df441ff472c389" title="Close and free the connection to the server.">pa_simple_free</a>(s);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line">}</div>
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