<!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/FFTConvolver.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">FFTConvolver.h</div> </div> </div><!--header--> <div class="contents"> <a href="FFTConvolver_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 2015-2016 Juan Francisco Crespo Galán</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="IReader_8h.html">IReader.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="ISound_8h.html">ISound.h</a>"</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="FFTPlan_8h.html">util/FFTPlan.h</a>"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <a class="code" href="Audaspace_8h.html#acd7584504197a1397aaf57af797e1813">AUD_NAMESPACE_BEGIN</a></div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classFFTConvolver.html"> 36</a></span> <span class="keyword">class </span><a class="code" href="Audaspace_8h.html#ad9080e3b9907fa3d0f5df561c65aa098">AUD_API</a> <a class="code" href="classFFTConvolver.html">FFTConvolver</a></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="keyword">private</span>:</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  std::shared_ptr<FFTPlan> m_plan;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">int</span> m_N;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">int</span> m_M;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">int</span> m_L;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> m_realBufLen;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  std::complex<sample_t>* m_inBuffer;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* m_shiftBuffer;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">float</span>* m_tail;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  std::shared_ptr<std::vector<std::complex<sample_t>>> m_irBuffer;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">int</span> m_tailPos;</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>  <span class="comment">// delete copy constructor and operator=</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="classFFTConvolver.html">FFTConvolver</a>(<span class="keyword">const</span> <a class="code" href="classFFTConvolver.html">FFTConvolver</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="classFFTConvolver.html">FFTConvolver</a>& operator=(<span class="keyword">const</span> <a class="code" href="classFFTConvolver.html">FFTConvolver</a>&) = <span class="keyword">delete</span>;</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="keyword">public</span>:</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="classFFTConvolver.html">FFTConvolver</a>(std::shared_ptr<std::vector<std::complex<sample_t>>> ir, std::shared_ptr<FFTPlan> plan);</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">virtual</span> ~<a class="code" href="classFFTConvolver.html">FFTConvolver</a>();</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">void</span> getNext(<span class="keyword">const</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* inBuffer, <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* outBuffer, <span class="keywordtype">int</span>& length);</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">void</span> getNext(<span class="keyword">const</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* inBuffer, <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* outBuffer, <span class="keywordtype">int</span>& length, fftwf_complex* transformedData);</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">void</span> getNext(<span class="keyword">const</span> fftwf_complex* inBuffer, <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* outBuffer, <span class="keywordtype">int</span>& length);</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordtype">void</span> getTail(<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="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">void</span> clear();</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">void</span> IFFT_FDL(<span class="keyword">const</span> fftwf_complex* inBuffer, <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* outBuffer, <span class="keywordtype">int</span>& length);</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordtype">void</span> getNextFDL(<span class="keyword">const</span> std::complex<sample_t>* inBuffer, std::complex<sample_t>* accBuffer);</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">void</span> getNextFDL(<span class="keyword">const</span> <a class="code" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a>* inBuffer, std::complex<sample_t>* accBuffer, <span class="keywordtype">int</span>& length, fftwf_complex* transformedData);</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordtype">void</span> setImpulseResponse(std::shared_ptr<std::vector<std::complex<sample_t>>> ir);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  std::shared_ptr<std::vector<std::complex<sample_t>>> getImpulseResponse();</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> };</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div><div class="line"><a name="l00196"></a><span class="lineno"> 196</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="ISound_8h_html"><div class="ttname"><a href="ISound_8h.html">ISound.h</a></div><div class="ttdoc">The ISound interface.</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="IReader_8h_html"><div class="ttname"><a href="IReader_8h.html">IReader.h</a></div><div class="ttdoc">The IReader interface.</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="classFFTConvolver_html"><div class="ttname"><a href="classFFTConvolver.html">FFTConvolver</a></div><div class="ttdoc">This class allows to easily convolve a sound using the Fourier transform.</div><div class="ttdef"><b>Definition:</b> FFTConvolver.h:36</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="FFTPlan_8h_html"><div class="ttname"><a href="FFTPlan_8h.html">FFTPlan.h</a></div><div class="ttdoc">The FFTPlan class.</div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a 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