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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>VampPluginSDK: PluginInputDomainAdapter.cpp Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.5 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> <li><a href="dirs.html"><span>Directories</span></a></li> </ul> </div> <div class="navpath"><a class="el" href="dir_5b77fce4b90561041d958141b45c7c55.html">vamp-sdk</a> » <a class="el" href="dir_fa454903fff8cd477733ebe28a3468c0.html">hostext</a> </div> </div> </div> <h1>PluginInputDomainAdapter.cpp</h1><a href="PluginInputDomainAdapter_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */</span> <a name="l00002"></a>00002 <a name="l00003"></a>00003 <span class="comment">/*</span> <a name="l00004"></a>00004 <span class="comment"> Vamp</span> <a name="l00005"></a>00005 <span class="comment"></span> <a name="l00006"></a>00006 <span class="comment"> An API for audio analysis and feature extraction plugins.</span> <a name="l00007"></a>00007 <span class="comment"></span> <a name="l00008"></a>00008 <span class="comment"> Centre for Digital Music, Queen Mary, University of London.</span> <a name="l00009"></a>00009 <span class="comment"> Copyright 2006-2007 Chris Cannam and QMUL.</span> <a name="l00010"></a>00010 <span class="comment"> </span> <a name="l00011"></a>00011 <span class="comment"> This file is based in part on Don Cross's public domain FFT</span> <a name="l00012"></a>00012 <span class="comment"> implementation.</span> <a name="l00013"></a>00013 <span class="comment"></span> <a name="l00014"></a>00014 <span class="comment"> Permission is hereby granted, free of charge, to any person</span> <a name="l00015"></a>00015 <span class="comment"> obtaining a copy of this software and associated documentation</span> <a name="l00016"></a>00016 <span class="comment"> files (the "Software"), to deal in the Software without</span> <a name="l00017"></a>00017 <span class="comment"> restriction, including without limitation the rights to use, copy,</span> <a name="l00018"></a>00018 <span class="comment"> modify, merge, publish, distribute, sublicense, and/or sell copies</span> <a name="l00019"></a>00019 <span class="comment"> of the Software, and to permit persons to whom the Software is</span> <a name="l00020"></a>00020 <span class="comment"> furnished to do so, subject to the following conditions:</span> <a name="l00021"></a>00021 <span class="comment"></span> <a name="l00022"></a>00022 <span class="comment"> The above copyright notice and this permission notice shall be</span> <a name="l00023"></a>00023 <span class="comment"> included in all copies or substantial portions of the Software.</span> <a name="l00024"></a>00024 <span class="comment"></span> <a name="l00025"></a>00025 <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span> <a name="l00026"></a>00026 <span class="comment"> EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span> <a name="l00027"></a>00027 <span class="comment"> MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span> <a name="l00028"></a>00028 <span class="comment"> NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR</span> <a name="l00029"></a>00029 <span class="comment"> ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF</span> <a name="l00030"></a>00030 <span class="comment"> CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span> <a name="l00031"></a>00031 <span class="comment"> WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span> <a name="l00032"></a>00032 <span class="comment"></span> <a name="l00033"></a>00033 <span class="comment"> Except as contained in this notice, the names of the Centre for</span> <a name="l00034"></a>00034 <span class="comment"> Digital Music; Queen Mary, University of London; and Chris Cannam</span> <a name="l00035"></a>00035 <span class="comment"> shall not be used in advertising or otherwise to promote the sale,</span> <a name="l00036"></a>00036 <span class="comment"> use or other dealings in this Software without prior written</span> <a name="l00037"></a>00037 <span class="comment"> authorization.</span> <a name="l00038"></a>00038 <span class="comment">*/</span> <a name="l00039"></a>00039 <a name="l00040"></a>00040 <span class="preprocessor">#include "<a class="code" href="PluginInputDomainAdapter_8h.html">PluginInputDomainAdapter.h</a>"</span> <a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="preprocessor">#include <cmath></span> <a name="l00043"></a>00043 <a name="l00044"></a>00044 <a name="l00068"></a>00068 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#include <fftw3.h></span> <a name="l00070"></a>00070 <span class="preprocessor">#endif</span> <a name="l00071"></a>00071 <span class="preprocessor"></span> <a name="l00072"></a>00072 <a name="l00073"></a>00073 <span class="keyword">namespace </span>Vamp { <a name="l00074"></a>00074 <a name="l00075"></a>00075 <span class="keyword">namespace </span>HostExt { <a name="l00076"></a>00076 <a name="l00077"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html">00077</a> <span class="keyword">class </span><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html">PluginInputDomainAdapter::Impl</a> <a name="l00078"></a>00078 { <a name="l00079"></a>00079 <span class="keyword">public</span>: <a name="l00080"></a>00080 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dffa09cc6be98d87cb33c1e92310c9fc">Impl</a>(<a class="code" href="classVamp_1_1Plugin.html" title="Vamp::Plugin is a base class for plugin instance classes that provide feature extraction...">Plugin</a> *plugin, <span class="keywordtype">float</span> inputSampleRate); <a name="l00081"></a>00081 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#2c75fc9191782ee69185c60f9b68cb90">~Impl</a>(); <a name="l00082"></a>00082 <a name="l00083"></a>00083 <span class="keywordtype">bool</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#58c9bcbddcb7c3a1a3791b2a04e7372e">initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize); <a name="l00084"></a>00084 <a name="l00085"></a>00085 <span class="keywordtype">size_t</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4380af577605306d2edab51042c71681">getPreferredStepSize</a>() <span class="keyword">const</span>; <a name="l00086"></a>00086 <span class="keywordtype">size_t</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#b530681a774b29db3fd059149f4c1bf9">getPreferredBlockSize</a>() <span class="keyword">const</span>; <a name="l00087"></a>00087 <a name="l00088"></a>00088 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#1bd8c3ca5ce5d8254d2d4af910cc31f0">process</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *<span class="keyword">const</span> *inputBuffers, <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">RealTime</a> timestamp); <a name="l00089"></a>00089 <a name="l00090"></a>00090 <span class="keyword">protected</span>: <a name="l00091"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">00091</a> <a class="code" href="classVamp_1_1Plugin.html" title="Vamp::Plugin is a base class for plugin instance classes that provide feature extraction...">Plugin</a> *<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>; <a name="l00092"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#bafd656a3bf6d74d6dd38def0c73cc57">00092</a> <span class="keywordtype">float</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#bafd656a3bf6d74d6dd38def0c73cc57">m_inputSampleRate</a>; <a name="l00093"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">00093</a> <span class="keywordtype">int</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>; <a name="l00094"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">00094</a> <span class="keywordtype">int</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a>; <a name="l00095"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">00095</a> <span class="keywordtype">float</span> **<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>; <a name="l00096"></a>00096 <a name="l00097"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">00097</a> <span class="keywordtype">double</span> *<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>; <a name="l00098"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">00098</a> <span class="keywordtype">double</span> *<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a>; <a name="l00099"></a>00099 <a name="l00100"></a>00100 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00101"></a>00101 <span class="preprocessor"></span> fftw_plan m_plan; <a name="l00102"></a>00102 fftw_complex *m_cbuf; <a name="l00103"></a>00103 <span class="preprocessor">#else</span> <a name="l00104"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">00104</a> <span class="preprocessor"></span> <span class="keywordtype">double</span> *<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a>; <a name="l00105"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">00105</a> <span class="keywordtype">double</span> *<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a>; <a name="l00106"></a>00106 <span class="keywordtype">void</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#7ea985ca8cdc45dd156e8d50293c3085">fft</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n, <span class="keywordtype">bool</span> inverse, <a name="l00107"></a>00107 <span class="keywordtype">double</span> *ri, <span class="keywordtype">double</span> *ii, <span class="keywordtype">double</span> *ro, <span class="keywordtype">double</span> *io); <a name="l00108"></a>00108 <span class="preprocessor">#endif</span> <a name="l00109"></a>00109 <span class="preprocessor"></span> <a name="l00110"></a>00110 <span class="keywordtype">size_t</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#76073669d78c0681a3b3a9e71da86ae6">makeBlockSizeAcceptable</a>(<span class="keywordtype">size_t</span>) <span class="keyword">const</span>; <a name="l00111"></a>00111 }; <a name="l00112"></a>00112 <a name="l00113"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#878e7275acdb77efc7a802944305039d">00113</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#878e7275acdb77efc7a802944305039d">PluginInputDomainAdapter::PluginInputDomainAdapter</a>(<a class="code" href="classVamp_1_1Plugin.html" title="Vamp::Plugin is a base class for plugin instance classes that provide feature extraction...">Plugin</a> *plugin) : <a name="l00114"></a>00114 <a class="code" href="classVamp_1_1HostExt_1_1PluginWrapper.html" title="PluginWrapper is a simple base class for adapter plugins.">PluginWrapper</a>(plugin) <a name="l00115"></a>00115 { <a name="l00116"></a>00116 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a> = <span class="keyword">new</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html">Impl</a>(plugin, <a class="code" href="classVamp_1_1Plugin.html#59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>); <a name="l00117"></a>00117 } <a name="l00118"></a>00118 <a name="l00119"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#ec457c952155adf516dd8e3dc7739321">00119</a> PluginInputDomainAdapter::~PluginInputDomainAdapter() <a name="l00120"></a>00120 { <a name="l00121"></a>00121 <span class="keyword">delete</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a>; <a name="l00122"></a>00122 } <a name="l00123"></a>00123 <a name="l00124"></a>00124 <span class="keywordtype">bool</span> <a name="l00125"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#72d201eca10ec73bf16e07984f58f94c">00125</a> PluginInputDomainAdapter::initialise(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize) <a name="l00126"></a>00126 { <a name="l00127"></a>00127 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a>-><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#58c9bcbddcb7c3a1a3791b2a04e7372e">initialise</a>(channels, stepSize, blockSize); <a name="l00128"></a>00128 } <a name="l00129"></a>00129 <a name="l00130"></a>00130 <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bc">Plugin::InputDomain</a> <a name="l00131"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#376fa97a1c721255541fe35d71368976">00131</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#376fa97a1c721255541fe35d71368976" title="Get the plugin&#39;s required input domain.">PluginInputDomainAdapter::getInputDomain</a>()<span class="keyword"> const</span> <a name="l00132"></a>00132 <span class="keyword"></span>{ <a name="l00133"></a>00133 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bcd4a9f31b958a43a9757af7893aa2e7ff">TimeDomain</a>; <a name="l00134"></a>00134 } <a name="l00135"></a>00135 <a name="l00136"></a>00136 <span class="keywordtype">size_t</span> <a name="l00137"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#d979af9f1cbf2eeb16f4eaedb4a4f565">00137</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#d979af9f1cbf2eeb16f4eaedb4a4f565" title="Get the preferred step size (window increment -- the distance in sample frames between...">PluginInputDomainAdapter::getPreferredStepSize</a>()<span class="keyword"> const</span> <a name="l00138"></a>00138 <span class="keyword"></span>{ <a name="l00139"></a>00139 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a>-><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4380af577605306d2edab51042c71681">getPreferredStepSize</a>(); <a name="l00140"></a>00140 } <a name="l00141"></a>00141 <a name="l00142"></a>00142 <span class="keywordtype">size_t</span> <a name="l00143"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#4cf40d09d02022b1962ff17bb0324ea5">00143</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#4cf40d09d02022b1962ff17bb0324ea5" title="Get the preferred block size (window size -- the number of sample frames passed in...">PluginInputDomainAdapter::getPreferredBlockSize</a>()<span class="keyword"> const</span> <a name="l00144"></a>00144 <span class="keyword"></span>{ <a name="l00145"></a>00145 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a>-><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#b530681a774b29db3fd059149f4c1bf9">getPreferredBlockSize</a>(); <a name="l00146"></a>00146 } <a name="l00147"></a>00147 <a name="l00148"></a>00148 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">Plugin::FeatureSet</a> <a name="l00149"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#0867737693c16801d40a6adbde07ec07">00149</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#0867737693c16801d40a6adbde07ec07" title="Process a single block of input data.">PluginInputDomainAdapter::process</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *<span class="keyword">const</span> *inputBuffers, <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">RealTime</a> timestamp) <a name="l00150"></a>00150 { <a name="l00151"></a>00151 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter.html#9fa8a6b8a4e41b6e3f2fabc0d23678cc">m_impl</a>-><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#1bd8c3ca5ce5d8254d2d4af910cc31f0">process</a>(inputBuffers, timestamp); <a name="l00152"></a>00152 } <a name="l00153"></a>00153 <a name="l00154"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dffa09cc6be98d87cb33c1e92310c9fc">00154</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dffa09cc6be98d87cb33c1e92310c9fc">PluginInputDomainAdapter::Impl::Impl</a>(<a class="code" href="classVamp_1_1Plugin.html" title="Vamp::Plugin is a base class for plugin instance classes that provide feature extraction...">Plugin</a> *plugin, <span class="keywordtype">float</span> inputSampleRate) : <a name="l00155"></a>00155 <a class="code" href="classVamp_1_1HostExt_1_1PluginWrapper.html#b4e40ecd98b445e1a2aa9e7baa280ea2">m_plugin</a>(plugin), <a name="l00156"></a>00156 <a class="code" href="classVamp_1_1Plugin.html#59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>(inputSampleRate), <a name="l00157"></a>00157 m_channels(0), <a name="l00158"></a>00158 m_blockSize(0), <a name="l00159"></a>00159 m_freqbuf(0), <a name="l00160"></a>00160 m_ri(0), <a name="l00161"></a>00161 m_window(0), <a name="l00162"></a>00162 #ifdef HAVE_FFTW3 <a name="l00163"></a>00163 m_plan(0), <a name="l00164"></a>00164 m_cbuf(0) <a name="l00165"></a>00165 #else <a name="l00166"></a>00166 m_ro(0), <a name="l00167"></a>00167 m_io(0) <a name="l00168"></a>00168 #endif <a name="l00169"></a>00169 { <a name="l00170"></a>00170 } <a name="l00171"></a>00171 <a name="l00172"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#2c75fc9191782ee69185c60f9b68cb90">00172</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#2c75fc9191782ee69185c60f9b68cb90">PluginInputDomainAdapter::Impl::~Impl</a>() <a name="l00173"></a>00173 { <a name="l00174"></a>00174 <span class="comment">// the adapter will delete the plugin</span> <a name="l00175"></a>00175 <a name="l00176"></a>00176 <span class="keywordflow">if</span> (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a> > 0) { <a name="l00177"></a>00177 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>; ++c) { <a name="l00178"></a>00178 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c]; <a name="l00179"></a>00179 } <a name="l00180"></a>00180 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>; <a name="l00181"></a>00181 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00182"></a>00182 <span class="preprocessor"></span> <span class="keywordflow">if</span> (m_plan) { <a name="l00183"></a>00183 fftw_destroy_plan(m_plan); <a name="l00184"></a>00184 fftw_free(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>); <a name="l00185"></a>00185 fftw_free(m_cbuf); <a name="l00186"></a>00186 m_plan = 0; <a name="l00187"></a>00187 } <a name="l00188"></a>00188 <span class="preprocessor">#else</span> <a name="l00189"></a>00189 <span class="preprocessor"></span> <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>; <a name="l00190"></a>00190 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a>; <a name="l00191"></a>00191 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a>; <a name="l00192"></a>00192 <span class="preprocessor">#endif</span> <a name="l00193"></a>00193 <span class="preprocessor"></span> <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a>; <a name="l00194"></a>00194 } <a name="l00195"></a>00195 } <a name="l00196"></a>00196 <a name="l00197"></a>00197 <span class="comment">// for some visual studii apparently</span> <a name="l00198"></a>00198 <span class="preprocessor">#ifndef M_PI</span> <a name="l00199"></a><a class="code" href="PluginInputDomainAdapter_8cpp.html#e71449b1cc6e6250b91f539153a7a0d3">00199</a> <span class="preprocessor"></span><span class="preprocessor">#define M_PI 3.14159265358979232846</span> <a name="l00200"></a>00200 <span class="preprocessor"></span><span class="preprocessor">#endif</span> <a name="l00201"></a>00201 <span class="preprocessor"></span> <a name="l00202"></a>00202 <span class="keywordtype">bool</span> <a name="l00203"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#58c9bcbddcb7c3a1a3791b2a04e7372e">00203</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#58c9bcbddcb7c3a1a3791b2a04e7372e">PluginInputDomainAdapter::Impl::initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize) <a name="l00204"></a>00204 { <a name="l00205"></a>00205 <span class="keywordflow">if</span> (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e1d317a9702cbeda65ddf0ec500c1ff6" title="Get the plugin&#39;s required input domain.">getInputDomain</a>() == <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bcd4a9f31b958a43a9757af7893aa2e7ff">TimeDomain</a>) { <a name="l00206"></a>00206 <a name="l00207"></a>00207 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a> = int(blockSize); <a name="l00208"></a>00208 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a> = int(channels); <a name="l00209"></a>00209 <a name="l00210"></a>00210 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#f26212cf5fc511b603a8b48034247822" title="Initialise a plugin to prepare it for use with the given number of input channels...">initialise</a>(channels, stepSize, blockSize); <a name="l00211"></a>00211 } <a name="l00212"></a>00212 <a name="l00213"></a>00213 <span class="keywordflow">if</span> (blockSize < 2) { <a name="l00214"></a>00214 std::cerr << <span class="stringliteral">"ERROR: Vamp::HostExt::PluginInputDomainAdapter::Impl::initialise: blocksize < 2 not supported"</span> << std::endl; <a name="l00215"></a>00215 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00216"></a>00216 } <a name="l00217"></a>00217 <a name="l00218"></a>00218 <span class="keywordflow">if</span> (blockSize & (blockSize-1)) { <a name="l00219"></a>00219 std::cerr << <span class="stringliteral">"ERROR: Vamp::HostExt::PluginInputDomainAdapter::Impl::initialise: non-power-of-two\nblocksize "</span> << blockSize << <span class="stringliteral">" not supported"</span> << std::endl; <a name="l00220"></a>00220 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00221"></a>00221 } <a name="l00222"></a>00222 <a name="l00223"></a>00223 <span class="keywordflow">if</span> (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a> > 0) { <a name="l00224"></a>00224 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>; ++c) { <a name="l00225"></a>00225 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c]; <a name="l00226"></a>00226 } <a name="l00227"></a>00227 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>; <a name="l00228"></a>00228 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00229"></a>00229 <span class="preprocessor"></span> <span class="keywordflow">if</span> (m_plan) { <a name="l00230"></a>00230 fftw_destroy_plan(m_plan); <a name="l00231"></a>00231 fftw_free(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>); <a name="l00232"></a>00232 fftw_free(m_cbuf); <a name="l00233"></a>00233 m_plan = 0; <a name="l00234"></a>00234 } <a name="l00235"></a>00235 <span class="preprocessor">#else</span> <a name="l00236"></a>00236 <span class="preprocessor"></span> <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>; <a name="l00237"></a>00237 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a>; <a name="l00238"></a>00238 <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a>; <a name="l00239"></a>00239 <span class="preprocessor">#endif</span> <a name="l00240"></a>00240 <span class="preprocessor"></span> <span class="keyword">delete</span>[] <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a>; <a name="l00241"></a>00241 } <a name="l00242"></a>00242 <a name="l00243"></a>00243 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a> = int(blockSize); <a name="l00244"></a>00244 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a> = int(channels); <a name="l00245"></a>00245 <a name="l00246"></a>00246 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a> = <span class="keyword">new</span> <span class="keywordtype">float</span> *[<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>]; <a name="l00247"></a>00247 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>; ++c) { <a name="l00248"></a>00248 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c] = <span class="keyword">new</span> <span class="keywordtype">float</span>[<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a> + 2]; <a name="l00249"></a>00249 } <a name="l00250"></a>00250 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a> = <span class="keyword">new</span> <span class="keywordtype">double</span>[<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a>]; <a name="l00251"></a>00251 <a name="l00252"></a>00252 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a>; ++i) { <a name="l00253"></a>00253 <span class="comment">// Hanning window</span> <a name="l00254"></a>00254 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a>[i] = (0.50 - 0.50 * cos((2.0 * <a class="code" href="PluginInputDomainAdapter_8cpp.html#e71449b1cc6e6250b91f539153a7a0d3">M_PI</a> * i) / m_blockSize)); <a name="l00255"></a>00255 } <a name="l00256"></a>00256 <a name="l00257"></a>00257 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00258"></a>00258 <span class="preprocessor"></span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a> = (<span class="keywordtype">double</span> *)fftw_malloc(blockSize * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>)); <a name="l00259"></a>00259 m_cbuf = (fftw_complex *)fftw_malloc((blockSize/2 + 1) * <span class="keyword">sizeof</span>(fftw_complex)); <a name="l00260"></a>00260 m_plan = fftw_plan_dft_r2c_1d(blockSize, <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>, m_cbuf, FFTW_MEASURE); <a name="l00261"></a>00261 <span class="preprocessor">#else</span> <a name="l00262"></a>00262 <span class="preprocessor"></span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a> = <span class="keyword">new</span> <span class="keywordtype">double</span>[m_blockSize]; <a name="l00263"></a>00263 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a> = <span class="keyword">new</span> <span class="keywordtype">double</span>[m_blockSize]; <a name="l00264"></a>00264 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a> = <span class="keyword">new</span> <span class="keywordtype">double</span>[m_blockSize]; <a name="l00265"></a>00265 <span class="preprocessor">#endif</span> <a name="l00266"></a>00266 <span class="preprocessor"></span> <a name="l00267"></a>00267 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#f26212cf5fc511b603a8b48034247822" title="Initialise a plugin to prepare it for use with the given number of input channels...">initialise</a>(channels, stepSize, blockSize); <a name="l00268"></a>00268 } <a name="l00269"></a>00269 <a name="l00270"></a>00270 <span class="keywordtype">size_t</span> <a name="l00271"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4380af577605306d2edab51042c71681">00271</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4380af577605306d2edab51042c71681">PluginInputDomainAdapter::Impl::getPreferredStepSize</a>()<span class="keyword"> const</span> <a name="l00272"></a>00272 <span class="keyword"></span>{ <a name="l00273"></a>00273 <span class="keywordtype">size_t</span> step = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#514c716c22f81c055f19b56c3f882567" title="Get the preferred step size (window increment -- the distance in sample frames between...">getPreferredStepSize</a>(); <a name="l00274"></a>00274 <a name="l00275"></a>00275 <span class="keywordflow">if</span> (step == 0 && (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e1d317a9702cbeda65ddf0ec500c1ff6" title="Get the plugin&#39;s required input domain.">getInputDomain</a>() == <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bca30e7877ab33f76acbdca28607e6ab53">FrequencyDomain</a>)) { <a name="l00276"></a>00276 step = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#b530681a774b29db3fd059149f4c1bf9">getPreferredBlockSize</a>() / 2; <a name="l00277"></a>00277 } <a name="l00278"></a>00278 <a name="l00279"></a>00279 <span class="keywordflow">return</span> step; <a name="l00280"></a>00280 } <a name="l00281"></a>00281 <a name="l00282"></a>00282 <span class="keywordtype">size_t</span> <a name="l00283"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#b530681a774b29db3fd059149f4c1bf9">00283</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#b530681a774b29db3fd059149f4c1bf9">PluginInputDomainAdapter::Impl::getPreferredBlockSize</a>()<span class="keyword"> const</span> <a name="l00284"></a>00284 <span class="keyword"></span>{ <a name="l00285"></a>00285 <span class="keywordtype">size_t</span> block = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#a529adf83f87a603954eb31407602aac" title="Get the preferred block size (window size -- the number of sample frames passed in...">getPreferredBlockSize</a>(); <a name="l00286"></a>00286 <a name="l00287"></a>00287 <span class="keywordflow">if</span> (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e1d317a9702cbeda65ddf0ec500c1ff6" title="Get the plugin&#39;s required input domain.">getInputDomain</a>() == <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bca30e7877ab33f76acbdca28607e6ab53">FrequencyDomain</a>) { <a name="l00288"></a>00288 <span class="keywordflow">if</span> (block == 0) { <a name="l00289"></a>00289 block = 1024; <a name="l00290"></a>00290 } <span class="keywordflow">else</span> { <a name="l00291"></a>00291 block = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#76073669d78c0681a3b3a9e71da86ae6">makeBlockSizeAcceptable</a>(block); <a name="l00292"></a>00292 } <a name="l00293"></a>00293 } <a name="l00294"></a>00294 <a name="l00295"></a>00295 <span class="keywordflow">return</span> block; <a name="l00296"></a>00296 } <a name="l00297"></a>00297 <a name="l00298"></a>00298 <span class="keywordtype">size_t</span> <a name="l00299"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#76073669d78c0681a3b3a9e71da86ae6">00299</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#76073669d78c0681a3b3a9e71da86ae6">PluginInputDomainAdapter::Impl::makeBlockSizeAcceptable</a>(<span class="keywordtype">size_t</span> blockSize)<span class="keyword"> const</span> <a name="l00300"></a>00300 <span class="keyword"></span>{ <a name="l00301"></a>00301 <span class="keywordflow">if</span> (blockSize < 2) { <a name="l00302"></a>00302 <a name="l00303"></a>00303 std::cerr << <span class="stringliteral">"WARNING: Vamp::HostExt::PluginInputDomainAdapter::Impl::initialise: blocksize < 2 not"</span> << std::endl <a name="l00304"></a>00304 << <span class="stringliteral">"supported, increasing from "</span> << blockSize << <span class="stringliteral">" to 2"</span> << std::endl; <a name="l00305"></a>00305 blockSize = 2; <a name="l00306"></a>00306 <a name="l00307"></a>00307 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (blockSize & (blockSize-1)) { <a name="l00308"></a>00308 <a name="l00309"></a>00309 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00310"></a>00310 <span class="preprocessor"></span> <span class="comment">// not an issue with FFTW</span> <a name="l00311"></a>00311 <span class="preprocessor">#else</span> <a name="l00312"></a>00312 <span class="preprocessor"></span> <a name="l00313"></a>00313 <span class="comment">// not a power of two, can't handle that with our built-in FFT</span> <a name="l00314"></a>00314 <span class="comment">// implementation</span> <a name="l00315"></a>00315 <a name="l00316"></a>00316 <span class="keywordtype">size_t</span> nearest = blockSize; <a name="l00317"></a>00317 <span class="keywordtype">size_t</span> power = 0; <a name="l00318"></a>00318 <span class="keywordflow">while</span> (nearest > 1) { <a name="l00319"></a>00319 nearest >>= 1; <a name="l00320"></a>00320 ++power; <a name="l00321"></a>00321 } <a name="l00322"></a>00322 nearest = 1; <a name="l00323"></a>00323 <span class="keywordflow">while</span> (power) { <a name="l00324"></a>00324 nearest <<= 1; <a name="l00325"></a>00325 --power; <a name="l00326"></a>00326 } <a name="l00327"></a>00327 <a name="l00328"></a>00328 <span class="keywordflow">if</span> (blockSize - nearest > (nearest*2) - blockSize) { <a name="l00329"></a>00329 nearest = nearest*2; <a name="l00330"></a>00330 } <a name="l00331"></a>00331 <a name="l00332"></a>00332 std::cerr << <span class="stringliteral">"WARNING: Vamp::HostExt::PluginInputDomainAdapter::Impl::initialise: non-power-of-two\nblocksize "</span> << blockSize << <span class="stringliteral">" not supported, using blocksize "</span> << nearest << <span class="stringliteral">" instead"</span> << std::endl; <a name="l00333"></a>00333 blockSize = nearest; <a name="l00334"></a>00334 <a name="l00335"></a>00335 <span class="preprocessor">#endif</span> <a name="l00336"></a>00336 <span class="preprocessor"></span> } <a name="l00337"></a>00337 <a name="l00338"></a>00338 <span class="keywordflow">return</span> blockSize; <a name="l00339"></a>00339 } <a name="l00340"></a>00340 <a name="l00341"></a>00341 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">Plugin::FeatureSet</a> <a name="l00342"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#1bd8c3ca5ce5d8254d2d4af910cc31f0">00342</a> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#1bd8c3ca5ce5d8254d2d4af910cc31f0">PluginInputDomainAdapter::Impl::process</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *<span class="keyword">const</span> *inputBuffers, <a name="l00343"></a>00343 <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">RealTime</a> timestamp) <a name="l00344"></a>00344 { <a name="l00345"></a>00345 <span class="keywordflow">if</span> (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e1d317a9702cbeda65ddf0ec500c1ff6" title="Get the plugin&#39;s required input domain.">getInputDomain</a>() == <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bcd4a9f31b958a43a9757af7893aa2e7ff">TimeDomain</a>) { <a name="l00346"></a>00346 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e4aed3bebfe80a2e2fccd3d37af26996" title="Process a single block of input data.">process</a>(inputBuffers, timestamp); <a name="l00347"></a>00347 } <a name="l00348"></a>00348 <a name="l00349"></a>00349 <span class="comment">// The timestamp supplied should be (according to the Vamp::Plugin</span> <a name="l00350"></a>00350 <span class="comment">// spec) the time of the start of the time-domain input block.</span> <a name="l00351"></a>00351 <span class="comment">// However, we want to pass to the plugin an FFT output calculated</span> <a name="l00352"></a>00352 <span class="comment">// from the block of samples _centred_ on that timestamp.</span> <a name="l00353"></a>00353 <span class="comment">// </span> <a name="l00354"></a>00354 <span class="comment">// We have two options:</span> <a name="l00355"></a>00355 <span class="comment">// </span> <a name="l00356"></a>00356 <span class="comment">// 1. Buffer the input, calculating the fft of the values at the</span> <a name="l00357"></a>00357 <span class="comment">// passed-in block minus blockSize/2 rather than starting at the</span> <a name="l00358"></a>00358 <span class="comment">// passed-in block. So each time we call process on the plugin,</span> <a name="l00359"></a>00359 <span class="comment">// we are passing in the same timestamp as was passed to our own</span> <a name="l00360"></a>00360 <span class="comment">// process plugin, but not (the frequency domain representation</span> <a name="l00361"></a>00361 <span class="comment">// of) the same set of samples. Advantages: avoids confusion in</span> <a name="l00362"></a>00362 <span class="comment">// the host by ensuring the returned values have timestamps</span> <a name="l00363"></a>00363 <span class="comment">// comparable with that passed in to this function (in fact this</span> <a name="l00364"></a>00364 <span class="comment">// is pretty much essential for one-value-per-block outputs);</span> <a name="l00365"></a>00365 <span class="comment">// consistent with hosts such as SV that deal with the</span> <a name="l00366"></a>00366 <span class="comment">// frequency-domain transform themselves. Disadvantages: means</span> <a name="l00367"></a>00367 <span class="comment">// making the not necessarily correct assumption that the samples</span> <a name="l00368"></a>00368 <span class="comment">// preceding the first official block are all zero (or some other</span> <a name="l00369"></a>00369 <span class="comment">// known value).</span> <a name="l00370"></a>00370 <span class="comment">//</span> <a name="l00371"></a>00371 <span class="comment">// 2. Increase the passed-in timestamps by half the blocksize. So</span> <a name="l00372"></a>00372 <span class="comment">// when we call process, we are passing in the frequency domain</span> <a name="l00373"></a>00373 <span class="comment">// representation of the same set of samples as passed to us, but</span> <a name="l00374"></a>00374 <span class="comment">// with a different timestamp. Advantages: simplicity; avoids</span> <a name="l00375"></a>00375 <span class="comment">// iffy assumption mentioned above. Disadvantages: inconsistency</span> <a name="l00376"></a>00376 <span class="comment">// with SV in cases where stepSize != blockSize/2; potential</span> <a name="l00377"></a>00377 <span class="comment">// confusion arising from returned timestamps being calculated</span> <a name="l00378"></a>00378 <span class="comment">// from the adjusted input timestamps rather than the original</span> <a name="l00379"></a>00379 <span class="comment">// ones (and inaccuracy where the returned timestamp is implied,</span> <a name="l00380"></a>00380 <span class="comment">// as in one-value-per-block).</span> <a name="l00381"></a>00381 <span class="comment">//</span> <a name="l00382"></a>00382 <span class="comment">// Neither way is ideal, but I don't think either is strictly</span> <a name="l00383"></a>00383 <span class="comment">// incorrect either. I think this is just a case where the same</span> <a name="l00384"></a>00384 <span class="comment">// plugin can legitimately produce differing results from the same</span> <a name="l00385"></a>00385 <span class="comment">// input data, depending on how that data is packaged.</span> <a name="l00386"></a>00386 <span class="comment">// </span> <a name="l00387"></a>00387 <span class="comment">// We'll go for option 2, adjusting the timestamps. Note in</span> <a name="l00388"></a>00388 <span class="comment">// particular that this means some results can differ from those</span> <a name="l00389"></a>00389 <span class="comment">// produced by SV.</span> <a name="l00390"></a>00390 <a name="l00391"></a>00391 <span class="comment">// std::cerr << "PluginInputDomainAdapter: sampleRate " << m_inputSampleRate << ", blocksize " << m_blockSize << ", adjusting time from " << timestamp;</span> <a name="l00392"></a>00392 <a name="l00393"></a>00393 timestamp = timestamp + <a class="code" href="structVamp_1_1RealTime.html#3a5ecc8888b559aad3b7d96911786b3a" title="Convert a sample frame at the given sample rate into a RealTime.">RealTime::frame2RealTime</a> <a name="l00394"></a>00394 (<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a>/2, <span class="keywordtype">int</span>(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#bafd656a3bf6d74d6dd38def0c73cc57">m_inputSampleRate</a> + 0.5)); <a name="l00395"></a>00395 <a name="l00396"></a>00396 <span class="comment">// std::cerr << " to " << timestamp << std::endl;</span> <a name="l00397"></a>00397 <a name="l00398"></a>00398 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#dc38e78c7bf4375516c1d2466bc349e9">m_channels</a>; ++c) { <a name="l00399"></a>00399 <a name="l00400"></a>00400 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#efcb8c5e8d65003eaf96d2bfefc83fe5">m_blockSize</a>; ++i) { <a name="l00401"></a>00401 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>[i] = double(inputBuffers[c][i]) * <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a43f6ea4727b9bb29d6d66869886d15e">m_window</a>[i]; <a name="l00402"></a>00402 } <a name="l00403"></a>00403 <a name="l00404"></a>00404 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < m_blockSize/2; ++i) { <a name="l00405"></a>00405 <span class="comment">// FFT shift</span> <a name="l00406"></a>00406 <span class="keywordtype">double</span> value = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>[i]; <a name="l00407"></a>00407 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>[i] = <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>[i + m_blockSize/2]; <a name="l00408"></a>00408 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>[i + m_blockSize/2] = value; <a name="l00409"></a>00409 } <a name="l00410"></a>00410 <a name="l00411"></a>00411 <span class="preprocessor">#ifdef HAVE_FFTW3</span> <a name="l00412"></a>00412 <span class="preprocessor"></span> <a name="l00413"></a>00413 fftw_execute(m_plan); <a name="l00414"></a>00414 <a name="l00415"></a>00415 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= m_blockSize/2; ++i) { <a name="l00416"></a>00416 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c][i * 2] = float(m_cbuf[i][0]); <a name="l00417"></a>00417 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c][i * 2 + 1] = float(m_cbuf[i][1]); <a name="l00418"></a>00418 } <a name="l00419"></a>00419 <a name="l00420"></a>00420 <span class="preprocessor">#else</span> <a name="l00421"></a>00421 <span class="preprocessor"></span> <a name="l00422"></a>00422 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#7ea985ca8cdc45dd156e8d50293c3085">fft</a>(m_blockSize, <span class="keyword">false</span>, <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#0c379b5bf280b6db1cf8fe782c1a94bb">m_ri</a>, 0, <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a>, <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a>); <a name="l00423"></a>00423 <a name="l00424"></a>00424 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= m_blockSize/2; ++i) { <a name="l00425"></a>00425 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c][i * 2] = float(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#6407b3c17dc96ba7036f2161b1aa30cb">m_ro</a>[i]); <a name="l00426"></a>00426 <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>[c][i * 2 + 1] = float(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#4d73b85b9ba00c10b55be4febc56dfc4">m_io</a>[i]); <a name="l00427"></a>00427 } <a name="l00428"></a>00428 <a name="l00429"></a>00429 <span class="preprocessor">#endif</span> <a name="l00430"></a>00430 <span class="preprocessor"></span> } <a name="l00431"></a>00431 <a name="l00432"></a>00432 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#a85961dc001c031beb0382a883f0738c">m_plugin</a>-><a class="code" href="classVamp_1_1Plugin.html#e4aed3bebfe80a2e2fccd3d37af26996" title="Process a single block of input data.">process</a>(<a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#24b96bba51fec82383a5413c63f27a57">m_freqbuf</a>, timestamp); <a name="l00433"></a>00433 } <a name="l00434"></a>00434 <a name="l00435"></a>00435 <span class="preprocessor">#ifndef HAVE_FFTW3</span> <a name="l00436"></a>00436 <span class="preprocessor"></span> <a name="l00437"></a>00437 <span class="keywordtype">void</span> <a name="l00438"></a><a class="code" href="classVamp_1_1HostExt_1_1PluginInputDomainAdapter_1_1Impl.html#7ea985ca8cdc45dd156e8d50293c3085">00438</a> <a class="code" href="vamp-simple-host_8cpp.html#b40a86a032d0cf473d15fed3616ccc57">PluginInputDomainAdapter::Impl::fft</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n, <span class="keywordtype">bool</span> inverse, <a name="l00439"></a>00439 <span class="keywordtype">double</span> *ri, <span class="keywordtype">double</span> *ii, <span class="keywordtype">double</span> *ro, <span class="keywordtype">double</span> *io) <a name="l00440"></a>00440 { <a name="l00441"></a>00441 <span class="keywordflow">if</span> (!ri || !ro || !io) <span class="keywordflow">return</span>; <a name="l00442"></a>00442 <a name="l00443"></a>00443 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bits; <a name="l00444"></a>00444 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i, j, k, m; <a name="l00445"></a>00445 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> blockSize, blockEnd; <a name="l00446"></a>00446 <a name="l00447"></a>00447 <span class="keywordtype">double</span> tr, ti; <a name="l00448"></a>00448 <a name="l00449"></a>00449 <span class="keywordflow">if</span> (n < 2) <span class="keywordflow">return</span>; <a name="l00450"></a>00450 <span class="keywordflow">if</span> (n & (n-1)) <span class="keywordflow">return</span>; <a name="l00451"></a>00451 <a name="l00452"></a>00452 <span class="keywordtype">double</span> angle = 2.0 * <a class="code" href="PluginInputDomainAdapter_8cpp.html#e71449b1cc6e6250b91f539153a7a0d3">M_PI</a>; <a name="l00453"></a>00453 <span class="keywordflow">if</span> (inverse) angle = -angle; <a name="l00454"></a>00454 <a name="l00455"></a>00455 <span class="keywordflow">for</span> (i = 0; ; ++i) { <a name="l00456"></a>00456 <span class="keywordflow">if</span> (n & (1 << i)) { <a name="l00457"></a>00457 bits = i; <a name="l00458"></a>00458 <span class="keywordflow">break</span>; <a name="l00459"></a>00459 } <a name="l00460"></a>00460 } <a name="l00461"></a>00461 <a name="l00462"></a>00462 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> tableSize = 0; <a name="l00463"></a>00463 <span class="keyword">static</span> <span class="keywordtype">int</span> *table = 0; <a name="l00464"></a>00464 <a name="l00465"></a>00465 <span class="keywordflow">if</span> (tableSize != n) { <a name="l00466"></a>00466 <a name="l00467"></a>00467 <span class="keyword">delete</span>[] table; <a name="l00468"></a>00468 <a name="l00469"></a>00469 table = <span class="keyword">new</span> <span class="keywordtype">int</span>[n]; <a name="l00470"></a>00470 <a name="l00471"></a>00471 <span class="keywordflow">for</span> (i = 0; i < n; ++i) { <a name="l00472"></a>00472 <a name="l00473"></a>00473 m = i; <a name="l00474"></a>00474 <a name="l00475"></a>00475 <span class="keywordflow">for</span> (j = k = 0; j < bits; ++j) { <a name="l00476"></a>00476 k = (k << 1) | (m & 1); <a name="l00477"></a>00477 m >>= 1; <a name="l00478"></a>00478 } <a name="l00479"></a>00479 <a name="l00480"></a>00480 table[i] = k; <a name="l00481"></a>00481 } <a name="l00482"></a>00482 <a name="l00483"></a>00483 tableSize = n; <a name="l00484"></a>00484 } <a name="l00485"></a>00485 <a name="l00486"></a>00486 <span class="keywordflow">if</span> (ii) { <a name="l00487"></a>00487 <span class="keywordflow">for</span> (i = 0; i < n; ++i) { <a name="l00488"></a>00488 ro[table[i]] = ri[i]; <a name="l00489"></a>00489 io[table[i]] = ii[i]; <a name="l00490"></a>00490 } <a name="l00491"></a>00491 } <span class="keywordflow">else</span> { <a name="l00492"></a>00492 <span class="keywordflow">for</span> (i = 0; i < n; ++i) { <a name="l00493"></a>00493 ro[table[i]] = ri[i]; <a name="l00494"></a>00494 io[table[i]] = 0.0; <a name="l00495"></a>00495 } <a name="l00496"></a>00496 } <a name="l00497"></a>00497 <a name="l00498"></a>00498 blockEnd = 1; <a name="l00499"></a>00499 <a name="l00500"></a>00500 <span class="keywordflow">for</span> (blockSize = 2; blockSize <= n; blockSize <<= 1) { <a name="l00501"></a>00501 <a name="l00502"></a>00502 <span class="keywordtype">double</span> delta = angle / (double)blockSize; <a name="l00503"></a>00503 <span class="keywordtype">double</span> sm2 = -sin(-2 * delta); <a name="l00504"></a>00504 <span class="keywordtype">double</span> sm1 = -sin(-delta); <a name="l00505"></a>00505 <span class="keywordtype">double</span> cm2 = cos(-2 * delta); <a name="l00506"></a>00506 <span class="keywordtype">double</span> cm1 = cos(-delta); <a name="l00507"></a>00507 <span class="keywordtype">double</span> w = 2 * cm1; <a name="l00508"></a>00508 <span class="keywordtype">double</span> ar[3], ai[3]; <a name="l00509"></a>00509 <a name="l00510"></a>00510 <span class="keywordflow">for</span> (i = 0; i < n; i += blockSize) { <a name="l00511"></a>00511 <a name="l00512"></a>00512 ar[2] = cm2; <a name="l00513"></a>00513 ar[1] = cm1; <a name="l00514"></a>00514 <a name="l00515"></a>00515 ai[2] = sm2; <a name="l00516"></a>00516 ai[1] = sm1; <a name="l00517"></a>00517 <a name="l00518"></a>00518 <span class="keywordflow">for</span> (j = i, m = 0; m < blockEnd; j++, m++) { <a name="l00519"></a>00519 <a name="l00520"></a>00520 ar[0] = w * ar[1] - ar[2]; <a name="l00521"></a>00521 ar[2] = ar[1]; <a name="l00522"></a>00522 ar[1] = ar[0]; <a name="l00523"></a>00523 <a name="l00524"></a>00524 ai[0] = w * ai[1] - ai[2]; <a name="l00525"></a>00525 ai[2] = ai[1]; <a name="l00526"></a>00526 ai[1] = ai[0]; <a name="l00527"></a>00527 <a name="l00528"></a>00528 k = j + blockEnd; <a name="l00529"></a>00529 tr = ar[0] * ro[k] - ai[0] * io[k]; <a name="l00530"></a>00530 ti = ar[0] * io[k] + ai[0] * ro[k]; <a name="l00531"></a>00531 <a name="l00532"></a>00532 ro[k] = ro[j] - tr; <a name="l00533"></a>00533 io[k] = io[j] - ti; <a name="l00534"></a>00534 <a name="l00535"></a>00535 ro[j] += tr; <a name="l00536"></a>00536 io[j] += ti; <a name="l00537"></a>00537 } <a name="l00538"></a>00538 } <a name="l00539"></a>00539 <a name="l00540"></a>00540 blockEnd = blockSize; <a name="l00541"></a>00541 } <a name="l00542"></a>00542 <a name="l00543"></a>00543 <span class="keywordflow">if</span> (inverse) { <a name="l00544"></a>00544 <a name="l00545"></a>00545 <span class="keywordtype">double</span> denom = (double)n; <a name="l00546"></a>00546 <a name="l00547"></a>00547 <span class="keywordflow">for</span> (i = 0; i < n; i++) { <a name="l00548"></a>00548 ro[i] /= denom; <a name="l00549"></a>00549 io[i] /= denom; <a name="l00550"></a>00550 } <a name="l00551"></a>00551 } <a name="l00552"></a>00552 } <a name="l00553"></a>00553 <a name="l00554"></a>00554 <span class="preprocessor">#endif</span> <a name="l00555"></a>00555 <span class="preprocessor"></span> <a name="l00556"></a>00556 } <a name="l00557"></a>00557 <a name="l00558"></a>00558 } <a name="l00559"></a>00559 </pre></div></div> <hr size="1"><address style="text-align: right;"><small>Generated on Wed Jul 9 11:36:07 2008 for VampPluginSDK by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.5 </small></address> </body> </html>