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<div class="title">ad_base.c</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/* ====================================================================</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (c) 1999-2001 Carnegie Mellon University. All rights</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * are met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer. </span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * distribution.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * This work was supported in part by funding from the Defense Advanced </span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Research Projects Agency and the National Science Foundation of the </span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * United States of America, and the CMU Sphinx Speech Consortium.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND </span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, </span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT </span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, </span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY </span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT </span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE </span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * ====================================================================</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * ad.c -- Wraps a "sphinx-II standard" audio interface around the basic audio</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * utilities.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * HISTORY</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * 11-Jun-96 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * Modified to conform to new A/D API.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * 12-May-96 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * Dummy template created.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#include <config.h></span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#include "<a class="code" href="prim__type_8h.html">prim_type.h</a>"</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#include "<a class="code" href="ad_8h.html">ad.h</a>"</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#define QUIT(x) {fprintf x; exit(-1);}</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <a class="code" href="structad__rec__t.html">ad_rec_t</a> *</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <a class="code" href="ad_8h.html#a43f66257a2457d6c711dc5c694bfc02f">ad_open_dev</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *dev, int32 samples_per_sec)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  fprintf(stderr, <span class="stringliteral">"A/D library not implemented\n"</span>);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <a class="code" href="structad__rec__t.html">ad_rec_t</a> *</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <a class="code" href="ad_8h.html#a71b4eec805fbe5c398ea0897816de6f0">ad_open_sps</a>(int32 samples_per_sec)</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  fprintf(stderr, <span class="stringliteral">"A/D library not implemented\n"</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <a class="code" href="structad__rec__t.html">ad_rec_t</a> *</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <a class="code" href="ad_8h.html#a3def0da951e840fb4c72ef9259540686">ad_open</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> <a class="code" href="ad_8h.html#a71b4eec805fbe5c398ea0897816de6f0">ad_open_sps</a>(DEFAULT_SAMPLES_PER_SEC);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> int32</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> ad_start_rec(<a class="code" href="structad__rec__t.html">ad_rec_t</a> * r)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> int32</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> ad_stop_rec(<a class="code" href="structad__rec__t.html">ad_rec_t</a> * r)</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> int32</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> ad_read(<a class="code" href="structad__rec__t.html">ad_rec_t</a> * r, int16 * buf, int32 max)</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> int32</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> ad_close(<a class="code" href="structad__rec__t.html">ad_rec_t</a> * r)</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div>
<div class="ttc" id="structad__rec__t_html"><div class="ttname"><a href="structad__rec__t.html">ad_rec_t</a></div><div class="ttdef"><b>Definition:</b> <a href="ad_8h_source.html#l00255">ad.h:255</a></div></div>
<div class="ttc" id="prim__type_8h_html"><div class="ttname"><a href="prim__type_8h.html">prim_type.h</a></div><div class="ttdoc">Basic type definitions used in Sphinx. </div></div>
<div class="ttc" id="ad_8h_html_a3def0da951e840fb4c72ef9259540686"><div class="ttname"><a href="ad_8h.html#a3def0da951e840fb4c72ef9259540686">ad_open</a></div><div class="ttdeci">SPHINXBASE_EXPORT ad_rec_t * ad_open(void)</div><div class="ttdoc">Open the default audio device. </div><div class="ttdef"><b>Definition:</b> <a href="ad__alsa_8c_source.html#l00296">ad_alsa.c:296</a></div></div>
<div class="ttc" id="ad_8h_html"><div class="ttname"><a href="ad_8h.html">ad.h</a></div><div class="ttdoc">generic live audio interface for recording and playback </div></div>
<div class="ttc" id="ad_8h_html_a43f66257a2457d6c711dc5c694bfc02f"><div class="ttname"><a href="ad_8h.html#a43f66257a2457d6c711dc5c694bfc02f">ad_open_dev</a></div><div class="ttdeci">SPHINXBASE_EXPORT ad_rec_t * ad_open_dev(const char *dev, int32 samples_per_sec)</div><div class="ttdoc">Open a specific audio device for recording. </div><div class="ttdef"><b>Definition:</b> <a href="ad__alsa_8c_source.html#l00252">ad_alsa.c:252</a></div></div>
<div class="ttc" id="ad_8h_html_a71b4eec805fbe5c398ea0897816de6f0"><div class="ttname"><a href="ad_8h.html#a71b4eec805fbe5c398ea0897816de6f0">ad_open_sps</a></div><div class="ttdeci">SPHINXBASE_EXPORT ad_rec_t * ad_open_sps(int32 samples_per_sec)</div><div class="ttdoc">Open the default audio device with a given sampling rate. </div><div class="ttdef"><b>Definition:</b> <a href="ad__alsa_8c_source.html#l00290">ad_alsa.c:290</a></div></div>
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