<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>Audaspace: fx/BaseIIRFilterReader.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">Audaspace  <span id="projectnumber">1.3.0</span> </div> <div id="projectbrief">A high level audio library.</div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ var searchBox = new SearchBox("searchBox", "search",false,'Search'); /* @license-end */ </script> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(function() { initMenu('',true,false,'search.php','Search'); $(document).ready(function() { init_search(); }); }); /* @license-end */</script> <div id="main-nav"></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_49abe4789985cc6a85622e26efb335d2.html">fx</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">BaseIIRFilterReader.h</div> </div> </div><!--header--> <div class="contents"> <a href="BaseIIRFilterReader_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*******************************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright 2009-2016 Jörg Müller</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * You may obtain a copy of the License at</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</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"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * limitations under the License.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ******************************************************************************/</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="EffectReader_8h.html">fx/EffectReader.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <a class="code" href="Audaspace_8h.html#acd7584504197a1397aaf57af797e1813">AUD_NAMESPACE_BEGIN</a></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classBaseIIRFilterReader.html"> 32</a></span> <span class="keyword">class </span><a class="code" href="Audaspace_8h.html#ad9080e3b9907fa3d0f5df561c65aa098">AUD_API</a> <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a> : <span class="keyword">public</span> <a class="code" href="classEffectReader.html">EffectReader</a></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="structSpecs.html">Specs</a> m_specs;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">int</span> m_xlen;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">int</span> m_ylen;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* m_x;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* m_y;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">int</span> m_xpos;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">int</span> m_ypos;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordtype">int</span> m_channel;</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>  <span class="comment">// delete copy constructor and operator=</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>(<span class="keyword">const</span> <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>& operator=(<span class="keyword">const</span> <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>&) = <span class="keyword">delete</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="keyword">protected</span>:</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>(std::shared_ptr<IReader> reader, <span class="keywordtype">int</span> in, <span class="keywordtype">int</span> out);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">void</span> setLengths(<span class="keywordtype">int</span> in, <span class="keywordtype">int</span> out);</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> <span class="keyword">public</span>:</div><div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="classBaseIIRFilterReader.html#a32835ea16af65ef83f12a86b3d86d202"> 101</a></span>  <span class="keyword">inline</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a> <a class="code" href="classBaseIIRFilterReader.html#a32835ea16af65ef83f12a86b3d86d202">x</a>(<span class="keywordtype">int</span> pos)</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>  <span class="keywordflow">return</span> m_x[(m_xpos + pos + m_xlen) % m_xlen * m_specs.<a class="code" href="structSpecs.html#a775da936d619d27ee02d2f3af0dac610">channels</a> + m_channel];</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classBaseIIRFilterReader.html#a8615ea2f0eca503396dc2eba33a939a9"> 111</a></span>  <span class="keyword">inline</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a> <a class="code" href="classBaseIIRFilterReader.html#a8615ea2f0eca503396dc2eba33a939a9">y</a>(<span class="keywordtype">int</span> pos)</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> m_y[(m_ypos + pos + m_ylen) % m_ylen * m_specs.<a class="code" href="structSpecs.html#a775da936d619d27ee02d2f3af0dac610">channels</a> + m_channel];</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">virtual</span> ~<a class="code" href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a>();</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classEffectReader.html#a2c0a347337dc390caec08acb8fde95ba">read</a>(<span class="keywordtype">int</span>& length, <span class="keywordtype">bool</span>& eos, <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* buffer);</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">virtual</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a> filter()=0;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> sampleRateChanged(<a class="code" href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a> rate);</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> };</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <a class="code" href="Audaspace_8h.html#a4cf7088a9bb0256563f28fd13c80b066">AUD_NAMESPACE_END</a></div><div class="ttc" id="Audaspace_8h_html_acd7584504197a1397aaf57af797e1813"><div class="ttname"><a href="Audaspace_8h.html#acd7584504197a1397aaf57af797e1813">AUD_NAMESPACE_BEGIN</a></div><div class="ttdeci">#define AUD_NAMESPACE_BEGIN</div><div class="ttdoc">Opens the audaspace namespace aud.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:116</div></div> <div class="ttc" id="classBaseIIRFilterReader_html_a8615ea2f0eca503396dc2eba33a939a9"><div class="ttname"><a href="classBaseIIRFilterReader.html#a8615ea2f0eca503396dc2eba33a939a9">BaseIIRFilterReader::y</a></div><div class="ttdeci">sample_t y(int pos)</div><div class="ttdoc">Retrieves the last output samples.</div><div class="ttdef"><b>Definition:</b> BaseIIRFilterReader.h:111</div></div> <div class="ttc" id="Audaspace_8h_html_ad9080e3b9907fa3d0f5df561c65aa098"><div class="ttname"><a href="Audaspace_8h.html#ad9080e3b9907fa3d0f5df561c65aa098">AUD_API</a></div><div class="ttdeci">#define AUD_API</div><div class="ttdoc">Used for exporting symbols in the shared library.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:93</div></div> <div class="ttc" id="structSpecs_html"><div class="ttname"><a href="structSpecs.html">Specs</a></div><div class="ttdoc">Specification of a sound source.</div><div class="ttdef"><b>Definition:</b> Specification.h:109</div></div> <div class="ttc" id="Specification_8h_html_a11249ca544d179e7fa61b2200a092407"><div class="ttname"><a href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a></div><div class="ttdeci">double SampleRate</div><div class="ttdoc">Sample rate type.</div><div class="ttdef"><b>Definition:</b> Specification.h:106</div></div> <div class="ttc" id="classBaseIIRFilterReader_html_a32835ea16af65ef83f12a86b3d86d202"><div class="ttname"><a href="classBaseIIRFilterReader.html#a32835ea16af65ef83f12a86b3d86d202">BaseIIRFilterReader::x</a></div><div class="ttdeci">sample_t x(int pos)</div><div class="ttdoc">Retrieves the last input samples.</div><div class="ttdef"><b>Definition:</b> BaseIIRFilterReader.h:101</div></div> <div class="ttc" id="classEffectReader_html"><div class="ttname"><a href="classEffectReader.html">EffectReader</a></div><div class="ttdoc">This reader is a base class for all effect readers that take one other reader as input.</div><div class="ttdef"><b>Definition:</b> EffectReader.h:35</div></div> <div class="ttc" id="EffectReader_8h_html"><div class="ttname"><a href="EffectReader_8h.html">EffectReader.h</a></div><div class="ttdoc">The EffectReader class.</div></div> <div class="ttc" id="classBaseIIRFilterReader_html"><div class="ttname"><a href="classBaseIIRFilterReader.html">BaseIIRFilterReader</a></div><div class="ttdoc">This class is a base class for infinite impulse response filters.</div><div class="ttdef"><b>Definition:</b> BaseIIRFilterReader.h:32</div></div> <div class="ttc" id="structSpecs_html_a775da936d619d27ee02d2f3af0dac610"><div class="ttname"><a href="structSpecs.html#a775da936d619d27ee02d2f3af0dac610">Specs::channels</a></div><div class="ttdeci">Channels channels</div><div class="ttdoc">Channel count.</div><div class="ttdef"><b>Definition:</b> Specification.h:115</div></div> <div class="ttc" id="Audaspace_8h_html_aa0798f7ea0975b143a1d9deac8c05d43"><div class="ttname"><a href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a></div><div class="ttdeci">float sample_t</div><div class="ttdoc">Sample type.(float samples)</div><div class="ttdef"><b>Definition:</b> Audaspace.h:126</div></div> <div class="ttc" id="Audaspace_8h_html_a4cf7088a9bb0256563f28fd13c80b066"><div class="ttname"><a href="Audaspace_8h.html#a4cf7088a9bb0256563f28fd13c80b066">AUD_NAMESPACE_END</a></div><div class="ttdeci">#define AUD_NAMESPACE_END</div><div class="ttdoc">Closes the audaspace namespace aud.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:119</div></div> <div class="ttc" id="classEffectReader_html_a2c0a347337dc390caec08acb8fde95ba"><div class="ttname"><a href="classEffectReader.html#a2c0a347337dc390caec08acb8fde95ba">EffectReader::read</a></div><div class="ttdeci">virtual void read(int &length, bool &eos, sample_t *buffer)</div><div class="ttdoc">Request to read the next length samples out of the source.</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.15 </small></address> </body> </html>