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Add a page about the Vamp Plugin Pack, including links to download mirrors
author Chris Cannam
date Tue, 11 Aug 2020 16:41:11 +0100
parents 8260c0f4e05b
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cannam@50 75 <div class="title">FixedTempoEstimator.cpp</div> </div>
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cannam@50 77 <div class="contents">
cannam@50 78 <a href="FixedTempoEstimator_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>
cannam@50 79 <a name="l00002"></a>00002
cannam@50 80 <a name="l00003"></a>00003 <span class="comment">/*</span>
cannam@50 81 <a name="l00004"></a>00004 <span class="comment"> Vamp</span>
cannam@50 82 <a name="l00005"></a>00005 <span class="comment"></span>
cannam@50 83 <a name="l00006"></a>00006 <span class="comment"> An API for audio analysis and feature extraction plugins.</span>
cannam@50 84 <a name="l00007"></a>00007 <span class="comment"></span>
cannam@50 85 <a name="l00008"></a>00008 <span class="comment"> Centre for Digital Music, Queen Mary, University of London.</span>
cannam@50 86 <a name="l00009"></a>00009 <span class="comment"> Copyright 2006-2009 Chris Cannam and QMUL.</span>
cannam@50 87 <a name="l00010"></a>00010 <span class="comment"> </span>
cannam@50 88 <a name="l00011"></a>00011 <span class="comment"> Permission is hereby granted, free of charge, to any person</span>
cannam@50 89 <a name="l00012"></a>00012 <span class="comment"> obtaining a copy of this software and associated documentation</span>
cannam@50 90 <a name="l00013"></a>00013 <span class="comment"> files (the &quot;Software&quot;), to deal in the Software without</span>
cannam@50 91 <a name="l00014"></a>00014 <span class="comment"> restriction, including without limitation the rights to use, copy,</span>
cannam@50 92 <a name="l00015"></a>00015 <span class="comment"> modify, merge, publish, distribute, sublicense, and/or sell copies</span>
cannam@50 93 <a name="l00016"></a>00016 <span class="comment"> of the Software, and to permit persons to whom the Software is</span>
cannam@50 94 <a name="l00017"></a>00017 <span class="comment"> furnished to do so, subject to the following conditions:</span>
cannam@50 95 <a name="l00018"></a>00018 <span class="comment"></span>
cannam@50 96 <a name="l00019"></a>00019 <span class="comment"> The above copyright notice and this permission notice shall be</span>
cannam@50 97 <a name="l00020"></a>00020 <span class="comment"> included in all copies or substantial portions of the Software.</span>
cannam@50 98 <a name="l00021"></a>00021 <span class="comment"></span>
cannam@50 99 <a name="l00022"></a>00022 <span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND,</span>
cannam@50 100 <a name="l00023"></a>00023 <span class="comment"> EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
cannam@50 101 <a name="l00024"></a>00024 <span class="comment"> MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span>
cannam@50 102 <a name="l00025"></a>00025 <span class="comment"> NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR</span>
cannam@50 103 <a name="l00026"></a>00026 <span class="comment"> ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF</span>
cannam@50 104 <a name="l00027"></a>00027 <span class="comment"> CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span>
cannam@50 105 <a name="l00028"></a>00028 <span class="comment"> WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
cannam@50 106 <a name="l00029"></a>00029 <span class="comment"></span>
cannam@50 107 <a name="l00030"></a>00030 <span class="comment"> Except as contained in this notice, the names of the Centre for</span>
cannam@50 108 <a name="l00031"></a>00031 <span class="comment"> Digital Music; Queen Mary, University of London; and Chris Cannam</span>
cannam@50 109 <a name="l00032"></a>00032 <span class="comment"> shall not be used in advertising or otherwise to promote the sale,</span>
cannam@50 110 <a name="l00033"></a>00033 <span class="comment"> use or other dealings in this Software without prior written</span>
cannam@50 111 <a name="l00034"></a>00034 <span class="comment"> authorization.</span>
cannam@50 112 <a name="l00035"></a>00035 <span class="comment">*/</span>
cannam@50 113 <a name="l00036"></a>00036
cannam@50 114 <a name="l00037"></a>00037 <span class="preprocessor">#include &quot;<a class="code" href="FixedTempoEstimator_8h.html">FixedTempoEstimator.h</a>&quot;</span>
cannam@50 115 <a name="l00038"></a>00038
cannam@50 116 <a name="l00039"></a>00039 <span class="keyword">using</span> std::string;
cannam@50 117 <a name="l00040"></a>00040 <span class="keyword">using</span> std::vector;
cannam@50 118 <a name="l00041"></a>00041 <span class="keyword">using</span> std::cerr;
cannam@50 119 <a name="l00042"></a>00042 <span class="keyword">using</span> std::endl;
cannam@50 120 <a name="l00043"></a>00043
cannam@50 121 <a name="l00044"></a>00044 <span class="keyword">using</span> <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...">Vamp::RealTime</a>;
cannam@50 122 <a name="l00045"></a>00045
cannam@50 123 <a name="l00046"></a>00046 <span class="preprocessor">#include &lt;cmath&gt;</span>
cannam@50 124 <a name="l00047"></a>00047 <span class="preprocessor">#include &lt;cstdio&gt;</span>
cannam@50 125 <a name="l00048"></a>00048
cannam@50 126 <a name="l00049"></a>00049
cannam@50 127 <a name="l00050"></a><a class="code" href="classFixedTempoEstimator_1_1D.html">00050</a> <span class="keyword">class </span><a class="code" href="classFixedTempoEstimator_1_1D.html">FixedTempoEstimator::D</a>
cannam@50 128 <a name="l00051"></a>00051 <span class="comment">// this class just avoids us having to declare any data members in the header</span>
cannam@50 129 <a name="l00052"></a>00052 {
cannam@50 130 <a name="l00053"></a>00053 <span class="keyword">public</span>:
cannam@50 131 <a name="l00054"></a>00054 <a class="code" href="classFixedTempoEstimator_1_1D.html#a104a9b64d47eca678844584f69ca0b9d">D</a>(<span class="keywordtype">float</span> inputSampleRate);
cannam@50 132 <a name="l00055"></a>00055 <a class="code" href="classFixedTempoEstimator_1_1D.html#a78a63ac8bbf342cb0405747871adf4cc">~D</a>();
cannam@50 133 <a name="l00056"></a>00056
cannam@50 134 <a name="l00057"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#add749be18355ab1ae5c1ccbacfd2e192">00057</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#add749be18355ab1ae5c1ccbacfd2e192">getPreferredStepSize</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 64; }
cannam@50 135 <a name="l00058"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ac02826f981736fc2aa5d835fa14e174d">00058</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ac02826f981736fc2aa5d835fa14e174d">getPreferredBlockSize</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 256; }
cannam@50 136 <a name="l00059"></a>00059
cannam@50 137 <a name="l00060"></a>00060 <a class="code" href="classVamp_1_1PluginBase.html#a3b6bb4bbd86affe1ca9deceea1aad4f8">ParameterList</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a06fcf80a9a22c4b90abbc88eb592621a">getParameterDescriptors</a>() <span class="keyword">const</span>;
cannam@50 138 <a name="l00061"></a>00061 <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a968ef2e555c81e4a3bde89d19fafb31a">getParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>) <span class="keyword">const</span>;
cannam@50 139 <a name="l00062"></a>00062 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a6cafa64d4cc8aa3556bc0ce6b0c49bc4">setParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value);
cannam@50 140 <a name="l00063"></a>00063
cannam@50 141 <a name="l00064"></a>00064 <a class="code" href="classVamp_1_1Plugin.html#a30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a7ce98af800f36045a0dae4b1dbed943f">getOutputDescriptors</a>() <span class="keyword">const</span>;
cannam@50 142 <a name="l00065"></a>00065
cannam@50 143 <a name="l00066"></a>00066 <span class="keywordtype">bool</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#af0fcad4493650728babb7e341963c91d">initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize);
cannam@50 144 <a name="l00067"></a>00067 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#af5ac8147bfe79371d00aba8a19c2f8fd">reset</a>();
cannam@50 145 <a name="l00068"></a>00068 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a7fac74fc9fc54f436408705d1e125e20">process</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *<span class="keyword">const</span> *, <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...">RealTime</a>);
cannam@50 146 <a name="l00069"></a>00069 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a7f9c3603bb3374d6936885010dbdd82b">getRemainingFeatures</a>();
cannam@50 147 <a name="l00070"></a>00070
cannam@50 148 <a name="l00071"></a>00071 <span class="keyword">private</span>:
cannam@50 149 <a name="l00072"></a>00072 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a4f2cbc11fba5bc8af3fd2a0078156091">calculate</a>();
cannam@50 150 <a name="l00073"></a>00073 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a20389ba1515f6ce4181d3f41e5c4f347">assembleFeatures</a>();
cannam@50 151 <a name="l00074"></a>00074
cannam@50 152 <a name="l00075"></a>00075 <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(<span class="keywordtype">int</span>);
cannam@50 153 <a name="l00076"></a>00076 <span class="keywordtype">int</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ac6a75212293fc855de6ed0c6581a0fb9">tempo2lag</a>(<span class="keywordtype">float</span>);
cannam@50 154 <a name="l00077"></a>00077
cannam@50 155 <a name="l00078"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a072a0fc30b3912a54858eefdd47f4d4f">00078</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>;
cannam@50 156 <a name="l00079"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a837da9722c63fe3c66c738255990c45f">00079</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a837da9722c63fe3c66c738255990c45f">m_stepSize</a>;
cannam@50 157 <a name="l00080"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a0b9bf37e600f0564b9f305f73a9517c8">00080</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>;
cannam@50 158 <a name="l00081"></a>00081
cannam@50 159 <a name="l00082"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a768fdbb62e4b21a39897963fdbd486ed">00082</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a768fdbb62e4b21a39897963fdbd486ed">m_minbpm</a>;
cannam@50 160 <a name="l00083"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a33e8d045b222addc6173b50df2553ba8">00083</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#a33e8d045b222addc6173b50df2553ba8">m_maxbpm</a>;
cannam@50 161 <a name="l00084"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#aca506973452865d436e07462eabdebad">00084</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#aca506973452865d436e07462eabdebad">m_maxdflen</a>;
cannam@50 162 <a name="l00085"></a>00085
cannam@50 163 <a name="l00086"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#aa59cf1cb5640a910c70884579e5d99ad">00086</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#aa59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>;
cannam@50 164 <a name="l00087"></a>00087
cannam@50 165 <a name="l00088"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ae739e006f2d10ef2b13677770b23e663">00088</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ae739e006f2d10ef2b13677770b23e663">m_dfsize</a>;
cannam@50 166 <a name="l00089"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a8e2312120e87ad9a48fedeebbaefa396">00089</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#a8e2312120e87ad9a48fedeebbaefa396">m_df</a>;
cannam@50 167 <a name="l00090"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a7a8c8658ecfeec98962078df89fcd538">00090</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#a7a8c8658ecfeec98962078df89fcd538">m_r</a>;
cannam@50 168 <a name="l00091"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ab255006072672653e645fc315eea6167">00091</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#ab255006072672653e645fc315eea6167">m_fr</a>;
cannam@50 169 <a name="l00092"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a698446aad2c0f737732a392fb86a612c">00092</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#a698446aad2c0f737732a392fb86a612c">m_t</a>;
cannam@50 170 <a name="l00093"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ab73af7f1943b76388de04cbb4696a983">00093</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ab73af7f1943b76388de04cbb4696a983">m_n</a>;
cannam@50 171 <a name="l00094"></a>00094
cannam@50 172 <a name="l00095"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a3a3a0b4a4c259087f02d0046241674d0">00095</a> <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...">Vamp::RealTime</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a3a3a0b4a4c259087f02d0046241674d0">m_start</a>;
cannam@50 173 <a name="l00096"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#abacd5ff19c301020efb99c03136b849a">00096</a> <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...">Vamp::RealTime</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#abacd5ff19c301020efb99c03136b849a">m_lasttime</a>;
cannam@50 174 <a name="l00097"></a>00097 };
cannam@50 175 <a name="l00098"></a>00098
cannam@50 176 <a name="l00099"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a104a9b64d47eca678844584f69ca0b9d">00099</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a104a9b64d47eca678844584f69ca0b9d">FixedTempoEstimator::D::D</a>(<span class="keywordtype">float</span> inputSampleRate) :
cannam@50 177 <a name="l00100"></a>00100 m_inputSampleRate(inputSampleRate),
cannam@50 178 <a name="l00101"></a>00101 m_stepSize(0),
cannam@50 179 <a name="l00102"></a>00102 m_blockSize(0),
cannam@50 180 <a name="l00103"></a>00103 m_minbpm(50),
cannam@50 181 <a name="l00104"></a>00104 m_maxbpm(190),
cannam@50 182 <a name="l00105"></a>00105 m_maxdflen(10),
cannam@50 183 <a name="l00106"></a>00106 m_priorMagnitudes(0),
cannam@50 184 <a name="l00107"></a>00107 m_df(0),
cannam@50 185 <a name="l00108"></a>00108 m_r(0),
cannam@50 186 <a name="l00109"></a>00109 m_fr(0),
cannam@50 187 <a name="l00110"></a>00110 m_t(0),
cannam@50 188 <a name="l00111"></a>00111 m_n(0)
cannam@50 189 <a name="l00112"></a>00112 {
cannam@50 190 <a name="l00113"></a>00113 }
cannam@50 191 <a name="l00114"></a>00114
cannam@50 192 <a name="l00115"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a78a63ac8bbf342cb0405747871adf4cc">00115</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a78a63ac8bbf342cb0405747871adf4cc">FixedTempoEstimator::D::~D</a>()
cannam@50 193 <a name="l00116"></a>00116 {
cannam@50 194 <a name="l00117"></a>00117 <span class="keyword">delete</span>[] m_priorMagnitudes;
cannam@50 195 <a name="l00118"></a>00118 <span class="keyword">delete</span>[] m_df;
cannam@50 196 <a name="l00119"></a>00119 <span class="keyword">delete</span>[] m_r;
cannam@50 197 <a name="l00120"></a>00120 <span class="keyword">delete</span>[] m_fr;
cannam@50 198 <a name="l00121"></a>00121 <span class="keyword">delete</span>[] m_t;
cannam@50 199 <a name="l00122"></a>00122 }
cannam@50 200 <a name="l00123"></a>00123
cannam@50 201 <a name="l00124"></a>00124 <a class="code" href="classVamp_1_1PluginBase.html#a3b6bb4bbd86affe1ca9deceea1aad4f8">FixedTempoEstimator::ParameterList</a>
cannam@50 202 <a name="l00125"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a06fcf80a9a22c4b90abbc88eb592621a">00125</a> <a class="code" href="classFixedTempoEstimator.html#ae157465a4e07d180bab05b5c3a4d8987" title="Get the controllable parameters of this plugin.">FixedTempoEstimator::D::getParameterDescriptors</a>()<span class="keyword"> const</span>
cannam@50 203 <a name="l00126"></a>00126 <span class="keyword"></span>{
cannam@50 204 <a name="l00127"></a>00127 <a class="code" href="classVamp_1_1PluginBase.html#a3b6bb4bbd86affe1ca9deceea1aad4f8">ParameterList</a> list;
cannam@50 205 <a name="l00128"></a>00128
cannam@50 206 <a name="l00129"></a>00129 <a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html">ParameterDescriptor</a> d;
cannam@50 207 <a name="l00130"></a>00130 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;minbpm&quot;</span>;
cannam@50 208 <a name="l00131"></a>00131 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">&quot;Minimum estimated tempo&quot;</span>;
cannam@50 209 <a name="l00132"></a>00132 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">&quot;Minimum beat-per-minute value which the tempo estimator is able to return&quot;</span>;
cannam@50 210 <a name="l00133"></a>00133 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a3bc3df322e4c02e17e96bc6d44982d7b" title="The unit of the parameter, in human-readable form.">unit</a> = <span class="stringliteral">&quot;bpm&quot;</span>;
cannam@50 211 <a name="l00134"></a>00134 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ab3e4d84f5bc199eea8b642b27e425ec8" title="The minimum value of the parameter.">minValue</a> = 10;
cannam@50 212 <a name="l00135"></a>00135 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ab934b20dd708228a0e3c2811a3e2cec4" title="The maximum value of the parameter.">maxValue</a> = 360;
cannam@50 213 <a name="l00136"></a>00136 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#aec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 50;
cannam@50 214 <a name="l00137"></a>00137 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a7c556d58d552f737ee5a34efdf7f9425" title="True if the parameter values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
cannam@50 215 <a name="l00138"></a>00138 list.push_back(d);
cannam@50 216 <a name="l00139"></a>00139
cannam@50 217 <a name="l00140"></a>00140 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;maxbpm&quot;</span>;
cannam@50 218 <a name="l00141"></a>00141 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">&quot;Maximum estimated tempo&quot;</span>;
cannam@50 219 <a name="l00142"></a>00142 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">&quot;Maximum beat-per-minute value which the tempo estimator is able to return&quot;</span>;
cannam@50 220 <a name="l00143"></a>00143 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#aec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 190;
cannam@50 221 <a name="l00144"></a>00144 list.push_back(d);
cannam@50 222 <a name="l00145"></a>00145
cannam@50 223 <a name="l00146"></a>00146 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;maxdflen&quot;</span>;
cannam@50 224 <a name="l00147"></a>00147 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">&quot;Input duration to study&quot;</span>;
cannam@50 225 <a name="l00148"></a>00148 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">&quot;Length of audio input, in seconds, which should be taken into account when estimating tempo. There is no need to supply the plugin with any further input once this time has elapsed since the start of the audio. The tempo estimator may use only the first part of this, up to eight times the slowest beat duration: increasing this value further than that is unlikely to improve results.&quot;</span>;
cannam@50 226 <a name="l00149"></a>00149 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#a3bc3df322e4c02e17e96bc6d44982d7b" title="The unit of the parameter, in human-readable form.">unit</a> = <span class="stringliteral">&quot;s&quot;</span>;
cannam@50 227 <a name="l00150"></a>00150 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ab3e4d84f5bc199eea8b642b27e425ec8" title="The minimum value of the parameter.">minValue</a> = 2;
cannam@50 228 <a name="l00151"></a>00151 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ab934b20dd708228a0e3c2811a3e2cec4" title="The maximum value of the parameter.">maxValue</a> = 40;
cannam@50 229 <a name="l00152"></a>00152 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#aec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 10;
cannam@50 230 <a name="l00153"></a>00153 list.push_back(d);
cannam@50 231 <a name="l00154"></a>00154
cannam@50 232 <a name="l00155"></a>00155 <span class="keywordflow">return</span> list;
cannam@50 233 <a name="l00156"></a>00156 }
cannam@50 234 <a name="l00157"></a>00157
cannam@50 235 <a name="l00158"></a>00158 <span class="keywordtype">float</span>
cannam@50 236 <a name="l00159"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a968ef2e555c81e4a3bde89d19fafb31a">00159</a> <a class="code" href="classFixedTempoEstimator.html#a2030b05fb1228b30ace16200780c9152" title="Get the value of a named parameter.">FixedTempoEstimator::D::getParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>)<span class="keyword"> const</span>
cannam@50 237 <a name="l00160"></a>00160 <span class="keyword"></span>{
cannam@50 238 <a name="l00161"></a>00161 <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;minbpm&quot;</span>) {
cannam@50 239 <a name="l00162"></a>00162 <span class="keywordflow">return</span> m_minbpm;
cannam@50 240 <a name="l00163"></a>00163 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;maxbpm&quot;</span>) {
cannam@50 241 <a name="l00164"></a>00164 <span class="keywordflow">return</span> m_maxbpm;
cannam@50 242 <a name="l00165"></a>00165 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;maxdflen&quot;</span>) {
cannam@50 243 <a name="l00166"></a>00166 <span class="keywordflow">return</span> m_maxdflen;
cannam@50 244 <a name="l00167"></a>00167 }
cannam@50 245 <a name="l00168"></a>00168 <span class="keywordflow">return</span> 0.f;
cannam@50 246 <a name="l00169"></a>00169 }
cannam@50 247 <a name="l00170"></a>00170
cannam@50 248 <a name="l00171"></a>00171 <span class="keywordtype">void</span>
cannam@50 249 <a name="l00172"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a6cafa64d4cc8aa3556bc0ce6b0c49bc4">00172</a> <a class="code" href="classFixedTempoEstimator.html#a8a5a413025384cf451c64d2c2ce13a75" title="Set a named parameter.">FixedTempoEstimator::D::setParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value)
cannam@50 250 <a name="l00173"></a>00173 {
cannam@50 251 <a name="l00174"></a>00174 <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;minbpm&quot;</span>) {
cannam@50 252 <a name="l00175"></a>00175 m_minbpm = value;
cannam@50 253 <a name="l00176"></a>00176 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;maxbpm&quot;</span>) {
cannam@50 254 <a name="l00177"></a>00177 m_maxbpm = value;
cannam@50 255 <a name="l00178"></a>00178 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">&quot;maxdflen&quot;</span>) {
cannam@50 256 <a name="l00179"></a>00179 m_maxdflen = value;
cannam@50 257 <a name="l00180"></a>00180 }
cannam@50 258 <a name="l00181"></a>00181 }
cannam@50 259 <a name="l00182"></a>00182
cannam@50 260 <a name="l00183"></a><a class="code" href="FixedTempoEstimator_8cpp.html#a7a8511e62dffb5334ad3b70d57b2fcee">00183</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#a7a8511e62dffb5334ad3b70d57b2fcee">TempoOutput</a> = 0;
cannam@50 261 <a name="l00184"></a><a class="code" href="FixedTempoEstimator_8cpp.html#a554b16c6b7516530e52c65318bfe08eb">00184</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#a554b16c6b7516530e52c65318bfe08eb">CandidatesOutput</a> = 1;
cannam@50 262 <a name="l00185"></a><a class="code" href="FixedTempoEstimator_8cpp.html#acaa4524f29afce03c812a88ff31159c1">00185</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#acaa4524f29afce03c812a88ff31159c1">DFOutput</a> = 2;
cannam@50 263 <a name="l00186"></a><a class="code" href="FixedTempoEstimator_8cpp.html#a382c1fe740ac8911c6078cfbceffc870">00186</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#a382c1fe740ac8911c6078cfbceffc870">ACFOutput</a> = 3;
cannam@50 264 <a name="l00187"></a><a class="code" href="FixedTempoEstimator_8cpp.html#a5b284021783d79785d46b043b458368d">00187</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#a5b284021783d79785d46b043b458368d">FilteredACFOutput</a> = 4;
cannam@50 265 <a name="l00188"></a>00188
cannam@50 266 <a name="l00189"></a>00189 <a class="code" href="classVamp_1_1Plugin.html#a30f531b8fb69fac41a24e3d2a6a08ed9">FixedTempoEstimator::OutputList</a>
cannam@50 267 <a name="l00190"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a7ce98af800f36045a0dae4b1dbed943f">00190</a> <a class="code" href="classFixedTempoEstimator.html#a83121c205a723fe6297e2bf8870622a4" title="Get the outputs of this plugin.">FixedTempoEstimator::D::getOutputDescriptors</a>()<span class="keyword"> const</span>
cannam@50 268 <a name="l00191"></a>00191 <span class="keyword"></span>{
cannam@50 269 <a name="l00192"></a>00192 <a class="code" href="classVamp_1_1Plugin.html#a30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> list;
cannam@50 270 <a name="l00193"></a>00193
cannam@50 271 <a name="l00194"></a>00194 <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html">OutputDescriptor</a> d;
cannam@50 272 <a name="l00195"></a>00195 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;tempo&quot;</span>;
cannam@50 273 <a name="l00196"></a>00196 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">&quot;Tempo&quot;</span>;
cannam@50 274 <a name="l00197"></a>00197 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">&quot;Estimated tempo&quot;</span>;
cannam@50 275 <a name="l00198"></a>00198 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#aa057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">&quot;bpm&quot;</span>;
cannam@50 276 <a name="l00199"></a>00199 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample.">hasFixedBinCount</a> = <span class="keyword">true</span>;
cannam@50 277 <a name="l00200"></a>00200 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#afdd006959a995e40ef7d565a3a4df6dc" title="The number of values per result of the output.">binCount</a> = 1;
cannam@50 278 <a name="l00201"></a>00201 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum and maximum values)...">hasKnownExtents</a> = <span class="keyword">false</span>;
cannam@50 279 <a name="l00202"></a>00202 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a1b4858928d23bfd7d5bc557c82a83fb4" title="True if the output values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
cannam@50 280 <a name="l00203"></a>00203 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a0d1194980d44e31b25ef3b4b070d6b5d" title="Positioning in time of the output results.">sampleType</a> = <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#abffa9ed50cd756df70fd51f0355f448cadea995a737867f7b22b52f1c43c5432e" title="Results are unevenly spaced and have individual timestamps.">OutputDescriptor::VariableSampleRate</a>;
cannam@50 281 <a name="l00204"></a>00204 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#add0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>;
cannam@50 282 <a name="l00205"></a>00205 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab0d7cc6ab19e53b5bd12ee234f549ea3" title="True if the returned results for this output are known to have a duration field.">hasDuration</a> = <span class="keyword">true</span>; <span class="comment">// our returned tempo spans a certain range</span>
cannam@50 283 <a name="l00206"></a>00206 list.push_back(d);
cannam@50 284 <a name="l00207"></a>00207
cannam@50 285 <a name="l00208"></a>00208 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;candidates&quot;</span>;
cannam@50 286 <a name="l00209"></a>00209 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">&quot;Tempo candidates&quot;</span>;
cannam@50 287 <a name="l00210"></a>00210 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">&quot;Possible tempo estimates, one per bin with the most likely in the first bin&quot;</span>;
cannam@50 288 <a name="l00211"></a>00211 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#aa057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">&quot;bpm&quot;</span>;
cannam@50 289 <a name="l00212"></a>00212 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample.">hasFixedBinCount</a> = <span class="keyword">false</span>;
cannam@50 290 <a name="l00213"></a>00213 list.push_back(d);
cannam@50 291 <a name="l00214"></a>00214
cannam@50 292 <a name="l00215"></a>00215 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;detectionfunction&quot;</span>;
cannam@50 293 <a name="l00216"></a>00216 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">&quot;Detection Function&quot;</span>;
cannam@50 294 <a name="l00217"></a>00217 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">&quot;Onset detection function&quot;</span>;
cannam@50 295 <a name="l00218"></a>00218 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#aa057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 296 <a name="l00219"></a>00219 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample.">hasFixedBinCount</a> = 1;
cannam@50 297 <a name="l00220"></a>00220 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#afdd006959a995e40ef7d565a3a4df6dc" title="The number of values per result of the output.">binCount</a> = 1;
cannam@50 298 <a name="l00221"></a>00221 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum and maximum values)...">hasKnownExtents</a> = <span class="keyword">true</span>;
cannam@50 299 <a name="l00222"></a>00222 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ac9f5924c0be7571bba8e7ae7e7a921f4" title="Minimum value of the results in the output.">minValue</a> = 0.0;
cannam@50 300 <a name="l00223"></a>00223 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a907b4e8fbb48a46ac5a05f880d72719f" title="Maximum value of the results in the output.">maxValue</a> = 1.0;
cannam@50 301 <a name="l00224"></a>00224 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a1b4858928d23bfd7d5bc557c82a83fb4" title="True if the output values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
cannam@50 302 <a name="l00225"></a>00225 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a3bed37153067b625b95acb40b60dbf0b" title="Quantization resolution of the output values (e.g.">quantizeStep</a> = 0.0;
cannam@50 303 <a name="l00226"></a>00226 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a0d1194980d44e31b25ef3b4b070d6b5d" title="Positioning in time of the output results.">sampleType</a> = <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#abffa9ed50cd756df70fd51f0355f448ca4c74bd2fc96dfe2815623f94b40e5629" title="Results are evenly spaced in time (sampleRate specified below)">OutputDescriptor::FixedSampleRate</a>;
cannam@50 304 <a name="l00227"></a>00227 <span class="keywordflow">if</span> (m_stepSize) {
cannam@50 305 <a name="l00228"></a>00228 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#add0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a> / m_stepSize;
cannam@50 306 <a name="l00229"></a>00229 } <span class="keywordflow">else</span> {
cannam@50 307 <a name="l00230"></a>00230 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#add0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a> / (<a class="code" href="classFixedTempoEstimator.html#a68b8569b71504a0478caf990dbe30683" title="Get the preferred block size (window size -- the number of sample frames passed in each block to the ...">getPreferredBlockSize</a>()/2);
cannam@50 308 <a name="l00231"></a>00231 }
cannam@50 309 <a name="l00232"></a>00232 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab0d7cc6ab19e53b5bd12ee234f549ea3" title="True if the returned results for this output are known to have a duration field.">hasDuration</a> = <span class="keyword">false</span>;
cannam@50 310 <a name="l00233"></a>00233 list.push_back(d);
cannam@50 311 <a name="l00234"></a>00234
cannam@50 312 <a name="l00235"></a>00235 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;acf&quot;</span>;
cannam@50 313 <a name="l00236"></a>00236 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">&quot;Autocorrelation Function&quot;</span>;
cannam@50 314 <a name="l00237"></a>00237 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">&quot;Autocorrelation of onset detection function&quot;</span>;
cannam@50 315 <a name="l00238"></a>00238 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum and maximum values)...">hasKnownExtents</a> = <span class="keyword">false</span>;
cannam@50 316 <a name="l00239"></a>00239 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#aa057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">&quot;r&quot;</span>;
cannam@50 317 <a name="l00240"></a>00240 list.push_back(d);
cannam@50 318 <a name="l00241"></a>00241
cannam@50 319 <a name="l00242"></a>00242 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ae2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">&quot;filtered_acf&quot;</span>;
cannam@50 320 <a name="l00243"></a>00243 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#ab824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">&quot;Filtered Autocorrelation&quot;</span>;
cannam@50 321 <a name="l00244"></a>00244 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#af9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">&quot;Filtered autocorrelation of onset detection function&quot;</span>;
cannam@50 322 <a name="l00245"></a>00245 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#aa057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">&quot;r&quot;</span>;
cannam@50 323 <a name="l00246"></a>00246 list.push_back(d);
cannam@50 324 <a name="l00247"></a>00247
cannam@50 325 <a name="l00248"></a>00248 <span class="keywordflow">return</span> list;
cannam@50 326 <a name="l00249"></a>00249 }
cannam@50 327 <a name="l00250"></a>00250
cannam@50 328 <a name="l00251"></a>00251 <span class="keywordtype">bool</span>
cannam@50 329 <a name="l00252"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#af0fcad4493650728babb7e341963c91d">00252</a> <a class="code" href="classFixedTempoEstimator.html#aa7500a4ffbc4653baaf5101defdb37f5" title="Initialise a plugin to prepare it for use with the given number of input channels, step size (window increment, in sample frames) and block size (window size, in sample frames).">FixedTempoEstimator::D::initialise</a>(<span class="keywordtype">size_t</span>, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize)
cannam@50 330 <a name="l00253"></a>00253 {
cannam@50 331 <a name="l00254"></a>00254 m_stepSize = stepSize;
cannam@50 332 <a name="l00255"></a>00255 m_blockSize = blockSize;
cannam@50 333 <a name="l00256"></a>00256
cannam@50 334 <a name="l00257"></a>00257 <span class="keywordtype">float</span> dfLengthSecs = m_maxdflen;
cannam@50 335 <a name="l00258"></a>00258 m_dfsize = (dfLengthSecs * <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>) / m_stepSize;
cannam@50 336 <a name="l00259"></a>00259
cannam@50 337 <a name="l00260"></a>00260 m_priorMagnitudes = <span class="keyword">new</span> <span class="keywordtype">float</span>[m_blockSize/2];
cannam@50 338 <a name="l00261"></a>00261 m_df = <span class="keyword">new</span> <span class="keywordtype">float</span>[m_dfsize];
cannam@50 339 <a name="l00262"></a>00262
cannam@50 340 <a name="l00263"></a>00263 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; m_blockSize/2; ++i) {
cannam@50 341 <a name="l00264"></a>00264 m_priorMagnitudes[i] = 0.f;
cannam@50 342 <a name="l00265"></a>00265 }
cannam@50 343 <a name="l00266"></a>00266 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; m_dfsize; ++i) {
cannam@50 344 <a name="l00267"></a>00267 m_df[i] = 0.f;
cannam@50 345 <a name="l00268"></a>00268 }
cannam@50 346 <a name="l00269"></a>00269
cannam@50 347 <a name="l00270"></a>00270 m_n = 0;
cannam@50 348 <a name="l00271"></a>00271
cannam@50 349 <a name="l00272"></a>00272 <span class="keywordflow">return</span> <span class="keyword">true</span>;
cannam@50 350 <a name="l00273"></a>00273 }
cannam@50 351 <a name="l00274"></a>00274
cannam@50 352 <a name="l00275"></a>00275 <span class="keywordtype">void</span>
cannam@50 353 <a name="l00276"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#af5ac8147bfe79371d00aba8a19c2f8fd">00276</a> <a class="code" href="classFixedTempoEstimator.html#ac41708397255400c6682fee6c1b3d45f" title="Reset the plugin after use, to prepare it for another clean run.">FixedTempoEstimator::D::reset</a>()
cannam@50 354 <a name="l00277"></a>00277 {
cannam@50 355 <a name="l00278"></a>00278 <span class="keywordflow">if</span> (!m_priorMagnitudes) <span class="keywordflow">return</span>;
cannam@50 356 <a name="l00279"></a>00279
cannam@50 357 <a name="l00280"></a>00280 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; m_blockSize/2; ++i) {
cannam@50 358 <a name="l00281"></a>00281 m_priorMagnitudes[i] = 0.f;
cannam@50 359 <a name="l00282"></a>00282 }
cannam@50 360 <a name="l00283"></a>00283 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; m_dfsize; ++i) {
cannam@50 361 <a name="l00284"></a>00284 m_df[i] = 0.f;
cannam@50 362 <a name="l00285"></a>00285 }
cannam@50 363 <a name="l00286"></a>00286
cannam@50 364 <a name="l00287"></a>00287 <span class="keyword">delete</span>[] m_r;
cannam@50 365 <a name="l00288"></a>00288 m_r = 0;
cannam@50 366 <a name="l00289"></a>00289
cannam@50 367 <a name="l00290"></a>00290 <span class="keyword">delete</span>[] m_fr;
cannam@50 368 <a name="l00291"></a>00291 m_fr = 0;
cannam@50 369 <a name="l00292"></a>00292
cannam@50 370 <a name="l00293"></a>00293 <span class="keyword">delete</span>[] m_t;
cannam@50 371 <a name="l00294"></a>00294 m_t = 0;
cannam@50 372 <a name="l00295"></a>00295
cannam@50 373 <a name="l00296"></a>00296 m_n = 0;
cannam@50 374 <a name="l00297"></a>00297
cannam@50 375 <a name="l00298"></a>00298 m_start = RealTime::zeroTime;
cannam@50 376 <a name="l00299"></a>00299 m_lasttime = RealTime::zeroTime;
cannam@50 377 <a name="l00300"></a>00300 }
cannam@50 378 <a name="l00301"></a>00301
cannam@50 379 <a name="l00302"></a>00302 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
cannam@50 380 <a name="l00303"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a7fac74fc9fc54f436408705d1e125e20">00303</a> <a class="code" href="classFixedTempoEstimator.html#a1cf76b0e55cf4ed3da095cffcdeaec3c" title="Process a single block of input data.">FixedTempoEstimator::D::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 and frame-rate conve...">RealTime</a> ts)
cannam@50 381 <a name="l00304"></a>00304 {
cannam@50 382 <a name="l00305"></a>00305 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
cannam@50 383 <a name="l00306"></a>00306
cannam@50 384 <a name="l00307"></a>00307 <span class="keywordflow">if</span> (m_stepSize == 0) {
cannam@50 385 <a name="l00308"></a>00308 cerr &lt;&lt; <span class="stringliteral">&quot;ERROR: FixedTempoEstimator::process: &quot;</span>
cannam@50 386 <a name="l00309"></a>00309 &lt;&lt; <span class="stringliteral">&quot;FixedTempoEstimator has not been initialised&quot;</span>
cannam@50 387 <a name="l00310"></a>00310 &lt;&lt; endl;
cannam@50 388 <a name="l00311"></a>00311 <span class="keywordflow">return</span> fs;
cannam@50 389 <a name="l00312"></a>00312 }
cannam@50 390 <a name="l00313"></a>00313
cannam@50 391 <a name="l00314"></a>00314 <span class="keywordflow">if</span> (m_n == 0) m_start = ts;
cannam@50 392 <a name="l00315"></a>00315 m_lasttime = ts;
cannam@50 393 <a name="l00316"></a>00316
cannam@50 394 <a name="l00317"></a>00317 <span class="keywordflow">if</span> (m_n == m_dfsize) {
cannam@50 395 <a name="l00318"></a>00318 <span class="comment">// If we have seen enough input, do the estimation and return</span>
cannam@50 396 <a name="l00319"></a>00319 calculate();
cannam@50 397 <a name="l00320"></a>00320 fs = assembleFeatures();
cannam@50 398 <a name="l00321"></a>00321 ++m_n;
cannam@50 399 <a name="l00322"></a>00322 <span class="keywordflow">return</span> fs;
cannam@50 400 <a name="l00323"></a>00323 }
cannam@50 401 <a name="l00324"></a>00324
cannam@50 402 <a name="l00325"></a>00325 <span class="comment">// If we have seen more than enough, just discard and return!</span>
cannam@50 403 <a name="l00326"></a>00326 <span class="keywordflow">if</span> (m_n &gt; m_dfsize) <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>();
cannam@50 404 <a name="l00327"></a>00327
cannam@50 405 <a name="l00328"></a>00328 <span class="keywordtype">float</span> value = 0.f;
cannam@50 406 <a name="l00329"></a>00329
cannam@50 407 <a name="l00330"></a>00330 <span class="comment">// m_df will contain an onset detection function based on the rise</span>
cannam@50 408 <a name="l00331"></a>00331 <span class="comment">// in overall power from one spectral frame to the next --</span>
cannam@50 409 <a name="l00332"></a>00332 <span class="comment">// simplistic but reasonably effective for our purposes.</span>
cannam@50 410 <a name="l00333"></a>00333
cannam@50 411 <a name="l00334"></a>00334 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 1; i &lt; m_blockSize/2; ++i) {
cannam@50 412 <a name="l00335"></a>00335
cannam@50 413 <a name="l00336"></a>00336 <span class="keywordtype">float</span> real = inputBuffers[0][i*2];
cannam@50 414 <a name="l00337"></a>00337 <span class="keywordtype">float</span> imag = inputBuffers[0][i*2 + 1];
cannam@50 415 <a name="l00338"></a>00338
cannam@50 416 <a name="l00339"></a>00339 <span class="keywordtype">float</span> sqrmag = real * real + imag * imag;
cannam@50 417 <a name="l00340"></a>00340 value += fabsf(sqrmag - m_priorMagnitudes[i]);
cannam@50 418 <a name="l00341"></a>00341
cannam@50 419 <a name="l00342"></a>00342 m_priorMagnitudes[i] = sqrmag;
cannam@50 420 <a name="l00343"></a>00343 }
cannam@50 421 <a name="l00344"></a>00344
cannam@50 422 <a name="l00345"></a>00345 m_df[m_n] = value;
cannam@50 423 <a name="l00346"></a>00346
cannam@50 424 <a name="l00347"></a>00347 ++m_n;
cannam@50 425 <a name="l00348"></a>00348 <span class="keywordflow">return</span> fs;
cannam@50 426 <a name="l00349"></a>00349 }
cannam@50 427 <a name="l00350"></a>00350
cannam@50 428 <a name="l00351"></a>00351 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
cannam@50 429 <a name="l00352"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a7f9c3603bb3374d6936885010dbdd82b">00352</a> <a class="code" href="classFixedTempoEstimator.html#a4965cf99be77fc4d1de51e11d83936b0" title="After all blocks have been processed, calculate and return any remaining features derived from the co...">FixedTempoEstimator::D::getRemainingFeatures</a>()
cannam@50 430 <a name="l00353"></a>00353 {
cannam@50 431 <a name="l00354"></a>00354 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
cannam@50 432 <a name="l00355"></a>00355 <span class="keywordflow">if</span> (m_n &gt; m_dfsize) <span class="keywordflow">return</span> fs;
cannam@50 433 <a name="l00356"></a>00356 calculate();
cannam@50 434 <a name="l00357"></a>00357 fs = assembleFeatures();
cannam@50 435 <a name="l00358"></a>00358 ++m_n;
cannam@50 436 <a name="l00359"></a>00359 <span class="keywordflow">return</span> fs;
cannam@50 437 <a name="l00360"></a>00360 }
cannam@50 438 <a name="l00361"></a>00361
cannam@50 439 <a name="l00362"></a>00362 <span class="keywordtype">float</span>
cannam@50 440 <a name="l00363"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a0a7cb0705938097ab23a6f9187e6bae5">00363</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a0a7cb0705938097ab23a6f9187e6bae5">FixedTempoEstimator::D::lag2tempo</a>(<span class="keywordtype">int</span> lag)
cannam@50 441 <a name="l00364"></a>00364 {
cannam@50 442 <a name="l00365"></a>00365 <span class="keywordflow">return</span> 60.f / ((lag * m_stepSize) / <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>);
cannam@50 443 <a name="l00366"></a>00366 }
cannam@50 444 <a name="l00367"></a>00367
cannam@50 445 <a name="l00368"></a>00368 <span class="keywordtype">int</span>
cannam@50 446 <a name="l00369"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ac6a75212293fc855de6ed0c6581a0fb9">00369</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#ac6a75212293fc855de6ed0c6581a0fb9">FixedTempoEstimator::D::tempo2lag</a>(<span class="keywordtype">float</span> tempo)
cannam@50 447 <a name="l00370"></a>00370 {
cannam@50 448 <a name="l00371"></a>00371 <span class="keywordflow">return</span> ((60.f / tempo) * <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>) / m_stepSize;
cannam@50 449 <a name="l00372"></a>00372 }
cannam@50 450 <a name="l00373"></a>00373
cannam@50 451 <a name="l00374"></a>00374 <span class="keywordtype">void</span>
cannam@50 452 <a name="l00375"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a4f2cbc11fba5bc8af3fd2a0078156091">00375</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a4f2cbc11fba5bc8af3fd2a0078156091">FixedTempoEstimator::D::calculate</a>()
cannam@50 453 <a name="l00376"></a>00376 {
cannam@50 454 <a name="l00377"></a>00377 <span class="keywordflow">if</span> (m_r) {
cannam@50 455 <a name="l00378"></a>00378 cerr &lt;&lt; <span class="stringliteral">&quot;FixedTempoEstimator::calculate: calculation already happened?&quot;</span> &lt;&lt; endl;
cannam@50 456 <a name="l00379"></a>00379 <span class="keywordflow">return</span>;
cannam@50 457 <a name="l00380"></a>00380 }
cannam@50 458 <a name="l00381"></a>00381
cannam@50 459 <a name="l00382"></a>00382 <span class="keywordflow">if</span> (m_n &lt; m_dfsize / 9 &amp;&amp;
cannam@50 460 <a name="l00383"></a>00383 m_n &lt; (1.0 * <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>) / m_stepSize) { <span class="comment">// 1 second</span>
cannam@50 461 <a name="l00384"></a>00384 cerr &lt;&lt; <span class="stringliteral">&quot;FixedTempoEstimator::calculate: Input is too short&quot;</span> &lt;&lt; endl;
cannam@50 462 <a name="l00385"></a>00385 <span class="keywordflow">return</span>;
cannam@50 463 <a name="l00386"></a>00386 }
cannam@50 464 <a name="l00387"></a>00387
cannam@50 465 <a name="l00388"></a>00388 <span class="comment">// This function takes m_df (the detection function array filled</span>
cannam@50 466 <a name="l00389"></a>00389 <span class="comment">// out in process()) and calculates m_r (the raw autocorrelation)</span>
cannam@50 467 <a name="l00390"></a>00390 <span class="comment">// and m_fr (the filtered autocorrelation from whose peaks tempo</span>
cannam@50 468 <a name="l00391"></a>00391 <span class="comment">// estimates will be taken).</span>
cannam@50 469 <a name="l00392"></a>00392
cannam@50 470 <a name="l00393"></a>00393 <span class="keywordtype">int</span> n = m_n; <span class="comment">// length of actual df array (m_dfsize is the theoretical max)</span>
cannam@50 471 <a name="l00394"></a>00394
cannam@50 472 <a name="l00395"></a>00395 m_r = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// raw autocorrelation</span>
cannam@50 473 <a name="l00396"></a>00396 m_fr = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// filtered autocorrelation</span>
cannam@50 474 <a name="l00397"></a>00397 m_t = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// averaged tempo estimate for each lag value</span>
cannam@50 475 <a name="l00398"></a>00398
cannam@50 476 <a name="l00399"></a>00399 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n/2; ++i) {
cannam@50 477 <a name="l00400"></a>00400 m_r[i] = 0.f;
cannam@50 478 <a name="l00401"></a>00401 m_fr[i] = 0.f;
cannam@50 479 <a name="l00402"></a>00402 m_t[i] = lag2tempo(i);
cannam@50 480 <a name="l00403"></a>00403 }
cannam@50 481 <a name="l00404"></a>00404
cannam@50 482 <a name="l00405"></a>00405 <span class="comment">// Calculate the raw autocorrelation of the detection function</span>
cannam@50 483 <a name="l00406"></a>00406
cannam@50 484 <a name="l00407"></a>00407 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n/2; ++i) {
cannam@50 485 <a name="l00408"></a>00408
cannam@50 486 <a name="l00409"></a>00409 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = i; j &lt; n; ++j) {
cannam@50 487 <a name="l00410"></a>00410 m_r[i] += m_df[j] * m_df[j - i];
cannam@50 488 <a name="l00411"></a>00411 }
cannam@50 489 <a name="l00412"></a>00412
cannam@50 490 <a name="l00413"></a>00413 m_r[i] /= n - i - 1;
cannam@50 491 <a name="l00414"></a>00414 }
cannam@50 492 <a name="l00415"></a>00415
cannam@50 493 <a name="l00416"></a>00416 <span class="comment">// Filter the autocorrelation and average out the tempo estimates</span>
cannam@50 494 <a name="l00417"></a>00417
cannam@50 495 <a name="l00418"></a>00418 <span class="keywordtype">float</span> related[] = { 0.5, 2, 4, 8 };
cannam@50 496 <a name="l00419"></a>00419
cannam@50 497 <a name="l00420"></a>00420 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; n/2-1; ++i) {
cannam@50 498 <a name="l00421"></a>00421
cannam@50 499 <a name="l00422"></a>00422 m_fr[i] = m_r[i];
cannam@50 500 <a name="l00423"></a>00423
cannam@50 501 <a name="l00424"></a>00424 <span class="keywordtype">int</span> div = 1;
cannam@50 502 <a name="l00425"></a>00425
cannam@50 503 <a name="l00426"></a>00426 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; int(<span class="keyword">sizeof</span>(related)/<span class="keyword">sizeof</span>(related[0])); ++j) {
cannam@50 504 <a name="l00427"></a>00427
cannam@50 505 <a name="l00428"></a>00428 <span class="comment">// Check for an obvious peak at each metrically related lag</span>
cannam@50 506 <a name="l00429"></a>00429
cannam@50 507 <a name="l00430"></a>00430 <span class="keywordtype">int</span> k0 = int(i * related[j] + 0.5);
cannam@50 508 <a name="l00431"></a>00431
cannam@50 509 <a name="l00432"></a>00432 <span class="keywordflow">if</span> (k0 &gt;= 0 &amp;&amp; k0 &lt; <span class="keywordtype">int</span>(n/2)) {
cannam@50 510 <a name="l00433"></a>00433
cannam@50 511 <a name="l00434"></a>00434 <span class="keywordtype">int</span> kmax = 0, kmin = 0;
cannam@50 512 <a name="l00435"></a>00435 <span class="keywordtype">float</span> kvmax = 0, kvmin = 0;
cannam@50 513 <a name="l00436"></a>00436 <span class="keywordtype">bool</span> have = <span class="keyword">false</span>;
cannam@50 514 <a name="l00437"></a>00437
cannam@50 515 <a name="l00438"></a>00438 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> k = k0 - 1; k &lt;= k0 + 1; ++k) {
cannam@50 516 <a name="l00439"></a>00439
cannam@50 517 <a name="l00440"></a>00440 <span class="keywordflow">if</span> (k &lt; 0 || k &gt;= n/2) <span class="keywordflow">continue</span>;
cannam@50 518 <a name="l00441"></a>00441
cannam@50 519 <a name="l00442"></a>00442 <span class="keywordflow">if</span> (!have || (m_r[k] &gt; kvmax)) { kmax = k; kvmax = m_r[k]; }
cannam@50 520 <a name="l00443"></a>00443 <span class="keywordflow">if</span> (!have || (m_r[k] &lt; kvmin)) { kmin = k; kvmin = m_r[k]; }
cannam@50 521 <a name="l00444"></a>00444
cannam@50 522 <a name="l00445"></a>00445 have = <span class="keyword">true</span>;
cannam@50 523 <a name="l00446"></a>00446 }
cannam@50 524 <a name="l00447"></a>00447
cannam@50 525 <a name="l00448"></a>00448 <span class="comment">// Boost the original lag according to the strongest</span>
cannam@50 526 <a name="l00449"></a>00449 <span class="comment">// value found close to this related lag</span>
cannam@50 527 <a name="l00450"></a>00450
cannam@50 528 <a name="l00451"></a>00451 m_fr[i] += m_r[kmax] / 5;
cannam@50 529 <a name="l00452"></a>00452
cannam@50 530 <a name="l00453"></a>00453 <span class="keywordflow">if</span> ((kmax == 0 || m_r[kmax] &gt; m_r[kmax-1]) &amp;&amp;
cannam@50 531 <a name="l00454"></a>00454 (kmax == n/2-1 || m_r[kmax] &gt; m_r[kmax+1]) &amp;&amp;
cannam@50 532 <a name="l00455"></a>00455 kvmax &gt; kvmin * 1.05) {
cannam@50 533 <a name="l00456"></a>00456
cannam@50 534 <a name="l00457"></a>00457 <span class="comment">// The strongest value close to the related lag is</span>
cannam@50 535 <a name="l00458"></a>00458 <span class="comment">// also a pretty good looking peak, so use it to</span>
cannam@50 536 <a name="l00459"></a>00459 <span class="comment">// improve our tempo estimate for the original lag</span>
cannam@50 537 <a name="l00460"></a>00460
cannam@50 538 <a name="l00461"></a>00461 m_t[i] = m_t[i] + lag2tempo(kmax) * related[j];
cannam@50 539 <a name="l00462"></a>00462 ++div;
cannam@50 540 <a name="l00463"></a>00463 }
cannam@50 541 <a name="l00464"></a>00464 }
cannam@50 542 <a name="l00465"></a>00465 }
cannam@50 543 <a name="l00466"></a>00466
cannam@50 544 <a name="l00467"></a>00467 m_t[i] /= div;
cannam@50 545 <a name="l00468"></a>00468
cannam@50 546 <a name="l00469"></a>00469 <span class="comment">// Finally apply a primitive perceptual weighting (to prefer</span>
cannam@50 547 <a name="l00470"></a>00470 <span class="comment">// tempi of around 120-130)</span>
cannam@50 548 <a name="l00471"></a>00471
cannam@50 549 <a name="l00472"></a>00472 <span class="keywordtype">float</span> weight = 1.f - fabsf(128.f - lag2tempo(i)) * 0.005;
cannam@50 550 <a name="l00473"></a>00473 <span class="keywordflow">if</span> (weight &lt; 0.f) weight = 0.f;
cannam@50 551 <a name="l00474"></a>00474 weight = weight * weight * weight;
cannam@50 552 <a name="l00475"></a>00475
cannam@50 553 <a name="l00476"></a>00476 m_fr[i] += m_fr[i] * (weight / 3);
cannam@50 554 <a name="l00477"></a>00477 }
cannam@50 555 <a name="l00478"></a>00478 }
cannam@50 556 <a name="l00479"></a>00479
cannam@50 557 <a name="l00480"></a>00480 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
cannam@50 558 <a name="l00481"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a20389ba1515f6ce4181d3f41e5c4f347">00481</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#a20389ba1515f6ce4181d3f41e5c4f347">FixedTempoEstimator::D::assembleFeatures</a>()
cannam@50 559 <a name="l00482"></a>00482 {
cannam@50 560 <a name="l00483"></a>00483 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
cannam@50 561 <a name="l00484"></a>00484 <span class="keywordflow">if</span> (!m_r) <span class="keywordflow">return</span> fs; <span class="comment">// No autocorrelation: no results</span>
cannam@50 562 <a name="l00485"></a>00485
cannam@50 563 <a name="l00486"></a>00486 <a class="code" href="structVamp_1_1Plugin_1_1Feature.html">Feature</a> feature;
cannam@50 564 <a name="l00487"></a>00487 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a98907091d0b6a589720ae35ae588a82b" title="True if an output feature has its own timestamp.">hasTimestamp</a> = <span class="keyword">true</span>;
cannam@50 565 <a name="l00488"></a>00488 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a33686757bd4481c72494122e9bfb9fba" title="True if an output feature has a specified duration.">hasDuration</a> = <span class="keyword">false</span>;
cannam@50 566 <a name="l00489"></a>00489 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 567 <a name="l00490"></a>00490 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear();
cannam@50 568 <a name="l00491"></a>00491 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(0.f);
cannam@50 569 <a name="l00492"></a>00492
cannam@50 570 <a name="l00493"></a>00493 <span class="keywordtype">char</span> buffer[40];
cannam@50 571 <a name="l00494"></a>00494
cannam@50 572 <a name="l00495"></a>00495 <span class="keywordtype">int</span> n = m_n;
cannam@50 573 <a name="l00496"></a>00496
cannam@50 574 <a name="l00497"></a>00497 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n; ++i) {
cannam@50 575 <a name="l00498"></a>00498
cannam@50 576 <a name="l00499"></a>00499 <span class="comment">// Return the detection function in the DF output</span>
cannam@50 577 <a name="l00500"></a>00500
cannam@50 578 <a name="l00501"></a>00501 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#acaa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = m_start +
cannam@50 579 <a name="l00502"></a>00502 RealTime::frame2RealTime(i * m_stepSize, <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>);
cannam@50 580 <a name="l00503"></a>00503 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = m_df[i];
cannam@50 581 <a name="l00504"></a>00504 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 582 <a name="l00505"></a>00505 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#acaa4524f29afce03c812a88ff31159c1">DFOutput</a>].push_back(feature);
cannam@50 583 <a name="l00506"></a>00506 }
cannam@50 584 <a name="l00507"></a>00507
cannam@50 585 <a name="l00508"></a>00508 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; n/2; ++i) {
cannam@50 586 <a name="l00509"></a>00509
cannam@50 587 <a name="l00510"></a>00510 <span class="comment">// Return the raw autocorrelation in the ACF output, each</span>
cannam@50 588 <a name="l00511"></a>00511 <span class="comment">// value labelled according to its corresponding tempo</span>
cannam@50 589 <a name="l00512"></a>00512
cannam@50 590 <a name="l00513"></a>00513 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#acaa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = m_start +
cannam@50 591 <a name="l00514"></a>00514 RealTime::frame2RealTime(i * m_stepSize, <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>);
cannam@50 592 <a name="l00515"></a>00515 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = m_r[i];
cannam@50 593 <a name="l00516"></a>00516 sprintf(buffer, <span class="stringliteral">&quot;%.1f bpm&quot;</span>, lag2tempo(i));
cannam@50 594 <a name="l00517"></a>00517 <span class="keywordflow">if</span> (i == n/2-1) feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 595 <a name="l00518"></a>00518 <span class="keywordflow">else</span> feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
cannam@50 596 <a name="l00519"></a>00519 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#a382c1fe740ac8911c6078cfbceffc870">ACFOutput</a>].push_back(feature);
cannam@50 597 <a name="l00520"></a>00520 }
cannam@50 598 <a name="l00521"></a>00521
cannam@50 599 <a name="l00522"></a>00522 <span class="keywordtype">float</span> t0 = m_minbpm; <span class="comment">// our minimum detected tempo</span>
cannam@50 600 <a name="l00523"></a>00523 <span class="keywordtype">float</span> t1 = m_maxbpm; <span class="comment">// our maximum detected tempo</span>
cannam@50 601 <a name="l00524"></a>00524
cannam@50 602 <a name="l00525"></a>00525 <span class="keywordtype">int</span> p0 = tempo2lag(t1);
cannam@50 603 <a name="l00526"></a>00526 <span class="keywordtype">int</span> p1 = tempo2lag(t0);
cannam@50 604 <a name="l00527"></a>00527
cannam@50 605 <a name="l00528"></a>00528 std::map&lt;float, int&gt; candidates;
cannam@50 606 <a name="l00529"></a>00529
cannam@50 607 <a name="l00530"></a>00530 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = p0; i &lt;= p1 &amp;&amp; i+1 &lt; n/2; ++i) {
cannam@50 608 <a name="l00531"></a>00531
cannam@50 609 <a name="l00532"></a>00532 <span class="keywordflow">if</span> (m_fr[i] &gt; m_fr[i-1] &amp;&amp;
cannam@50 610 <a name="l00533"></a>00533 m_fr[i] &gt; m_fr[i+1]) {
cannam@50 611 <a name="l00534"></a>00534
cannam@50 612 <a name="l00535"></a>00535 <span class="comment">// This is a peak in the filtered autocorrelation: stick</span>
cannam@50 613 <a name="l00536"></a>00536 <span class="comment">// it into the map from filtered autocorrelation to lag</span>
cannam@50 614 <a name="l00537"></a>00537 <span class="comment">// index -- this sorts our peaks by filtered acf value</span>
cannam@50 615 <a name="l00538"></a>00538
cannam@50 616 <a name="l00539"></a>00539 candidates[m_fr[i]] = i;
cannam@50 617 <a name="l00540"></a>00540 }
cannam@50 618 <a name="l00541"></a>00541
cannam@50 619 <a name="l00542"></a>00542 <span class="comment">// Also return the filtered autocorrelation in its own output</span>
cannam@50 620 <a name="l00543"></a>00543
cannam@50 621 <a name="l00544"></a>00544 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#acaa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = m_start +
cannam@50 622 <a name="l00545"></a>00545 RealTime::frame2RealTime(i * m_stepSize, <a class="code" href="classVamp_1_1Plugin.html#a59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>);
cannam@50 623 <a name="l00546"></a>00546 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = m_fr[i];
cannam@50 624 <a name="l00547"></a>00547 sprintf(buffer, <span class="stringliteral">&quot;%.1f bpm&quot;</span>, lag2tempo(i));
cannam@50 625 <a name="l00548"></a>00548 <span class="keywordflow">if</span> (i == p1 || i == n/2-2) feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 626 <a name="l00549"></a>00549 <span class="keywordflow">else</span> feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
cannam@50 627 <a name="l00550"></a>00550 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#a5b284021783d79785d46b043b458368d">FilteredACFOutput</a>].push_back(feature);
cannam@50 628 <a name="l00551"></a>00551 }
cannam@50 629 <a name="l00552"></a>00552
cannam@50 630 <a name="l00553"></a>00553 <span class="keywordflow">if</span> (candidates.empty()) {
cannam@50 631 <a name="l00554"></a>00554 cerr &lt;&lt; <span class="stringliteral">&quot;No tempo candidates!&quot;</span> &lt;&lt; endl;
cannam@50 632 <a name="l00555"></a>00555 <span class="keywordflow">return</span> fs;
cannam@50 633 <a name="l00556"></a>00556 }
cannam@50 634 <a name="l00557"></a>00557
cannam@50 635 <a name="l00558"></a>00558 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a98907091d0b6a589720ae35ae588a82b" title="True if an output feature has its own timestamp.">hasTimestamp</a> = <span class="keyword">true</span>;
cannam@50 636 <a name="l00559"></a>00559 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#acaa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = m_start;
cannam@50 637 <a name="l00560"></a>00560
cannam@50 638 <a name="l00561"></a>00561 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a33686757bd4481c72494122e9bfb9fba" title="True if an output feature has a specified duration.">hasDuration</a> = <span class="keyword">true</span>;
cannam@50 639 <a name="l00562"></a>00562 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#af687c0a7fe041757e922ec296862b115" title="Duration of the output feature.">duration</a> = m_lasttime - m_start;
cannam@50 640 <a name="l00563"></a>00563
cannam@50 641 <a name="l00564"></a>00564 <span class="comment">// The map contains only peaks and is sorted by filtered acf</span>
cannam@50 642 <a name="l00565"></a>00565 <span class="comment">// value, so the final element in it is our &quot;best&quot; tempo guess</span>
cannam@50 643 <a name="l00566"></a>00566
cannam@50 644 <a name="l00567"></a>00567 std::map&lt;float, int&gt;::const_iterator ci = candidates.end();
cannam@50 645 <a name="l00568"></a>00568 --ci;
cannam@50 646 <a name="l00569"></a>00569 <span class="keywordtype">int</span> maxpi = ci-&gt;second;
cannam@50 647 <a name="l00570"></a>00570
cannam@50 648 <a name="l00571"></a>00571 <span class="keywordflow">if</span> (m_t[maxpi] &gt; 0) {
cannam@50 649 <a name="l00572"></a>00572
cannam@50 650 <a name="l00573"></a>00573 <span class="comment">// This lag has an adjusted tempo from the averaging process:</span>
cannam@50 651 <a name="l00574"></a>00574 <span class="comment">// use it</span>
cannam@50 652 <a name="l00575"></a>00575
cannam@50 653 <a name="l00576"></a>00576 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = m_t[maxpi];
cannam@50 654 <a name="l00577"></a>00577
cannam@50 655 <a name="l00578"></a>00578 } <span class="keywordflow">else</span> {
cannam@50 656 <a name="l00579"></a>00579
cannam@50 657 <a name="l00580"></a>00580 <span class="comment">// shouldn&#39;t happen -- it would imply that this high value was</span>
cannam@50 658 <a name="l00581"></a>00581 <span class="comment">// not a peak!</span>
cannam@50 659 <a name="l00582"></a>00582
cannam@50 660 <a name="l00583"></a>00583 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = lag2tempo(maxpi);
cannam@50 661 <a name="l00584"></a>00584 cerr &lt;&lt; <span class="stringliteral">&quot;WARNING: No stored tempo for index &quot;</span> &lt;&lt; maxpi &lt;&lt; endl;
cannam@50 662 <a name="l00585"></a>00585 }
cannam@50 663 <a name="l00586"></a>00586
cannam@50 664 <a name="l00587"></a>00587 sprintf(buffer, <span class="stringliteral">&quot;%.1f bpm&quot;</span>, feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0]);
cannam@50 665 <a name="l00588"></a>00588 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
cannam@50 666 <a name="l00589"></a>00589
cannam@50 667 <a name="l00590"></a>00590 <span class="comment">// Return the best tempo in the main output</span>
cannam@50 668 <a name="l00591"></a>00591
cannam@50 669 <a name="l00592"></a>00592 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#a7a8511e62dffb5334ad3b70d57b2fcee">TempoOutput</a>].push_back(feature);
cannam@50 670 <a name="l00593"></a>00593
cannam@50 671 <a name="l00594"></a>00594 <span class="comment">// And return the other estimates (up to the arbitrarily chosen</span>
cannam@50 672 <a name="l00595"></a>00595 <span class="comment">// number of 10 of them) in the candidates output</span>
cannam@50 673 <a name="l00596"></a>00596
cannam@50 674 <a name="l00597"></a>00597 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear();
cannam@50 675 <a name="l00598"></a>00598 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">&quot;&quot;</span>;
cannam@50 676 <a name="l00599"></a>00599
cannam@50 677 <a name="l00600"></a>00600 <span class="keywordflow">while</span> (feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.size() &lt; 10) {
cannam@50 678 <a name="l00601"></a>00601 <span class="keywordflow">if</span> (m_t[ci-&gt;second] &gt; 0) {
cannam@50 679 <a name="l00602"></a>00602 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(m_t[ci-&gt;second]);
cannam@50 680 <a name="l00603"></a>00603 } <span class="keywordflow">else</span> {
cannam@50 681 <a name="l00604"></a>00604 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#a60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(lag2tempo(ci-&gt;second));
cannam@50 682 <a name="l00605"></a>00605 }
cannam@50 683 <a name="l00606"></a>00606 <span class="keywordflow">if</span> (ci == candidates.begin()) <span class="keywordflow">break</span>;
cannam@50 684 <a name="l00607"></a>00607 --ci;
cannam@50 685 <a name="l00608"></a>00608 }
cannam@50 686 <a name="l00609"></a>00609
cannam@50 687 <a name="l00610"></a>00610 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#a554b16c6b7516530e52c65318bfe08eb">CandidatesOutput</a>].push_back(feature);
cannam@50 688 <a name="l00611"></a>00611
cannam@50 689 <a name="l00612"></a>00612 <span class="keywordflow">return</span> fs;
cannam@50 690 <a name="l00613"></a>00613 }
cannam@50 691 <a name="l00614"></a>00614
cannam@50 692 <a name="l00615"></a>00615
cannam@50 693 <a name="l00616"></a>00616
cannam@50 694 <a name="l00617"></a><a class="code" href="classFixedTempoEstimator.html#a3967c189f054f864639837c2519bd64d">00617</a> <a class="code" href="classFixedTempoEstimator.html#a3967c189f054f864639837c2519bd64d">FixedTempoEstimator::FixedTempoEstimator</a>(<span class="keywordtype">float</span> inputSampleRate) :
cannam@50 695 <a name="l00618"></a>00618 <a class="code" href="classVamp_1_1Plugin.html#a1b78c4f46c72ef345ed27f0b9bf20ac9">Plugin</a>(inputSampleRate),
cannam@50 696 <a name="l00619"></a>00619 <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>(new <a class="code" href="classFixedTempoEstimator_1_1D.html">D</a>(inputSampleRate))
cannam@50 697 <a name="l00620"></a>00620 {
cannam@50 698 <a name="l00621"></a>00621 }
cannam@50 699 <a name="l00622"></a>00622
cannam@50 700 <a name="l00623"></a><a class="code" href="classFixedTempoEstimator.html#a0302c4bfdc163a3d34478cde93c96a53">00623</a> <a class="code" href="classFixedTempoEstimator.html#a0302c4bfdc163a3d34478cde93c96a53">FixedTempoEstimator::~FixedTempoEstimator</a>()
cannam@50 701 <a name="l00624"></a>00624 {
cannam@50 702 <a name="l00625"></a>00625 <span class="keyword">delete</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>;
cannam@50 703 <a name="l00626"></a>00626 }
cannam@50 704 <a name="l00627"></a>00627
cannam@50 705 <a name="l00628"></a>00628 <span class="keywordtype">string</span>
cannam@50 706 <a name="l00629"></a><a class="code" href="classFixedTempoEstimator.html#ab818edcf1555177d10260e197e3a5e7a">00629</a> <a class="code" href="classFixedTempoEstimator.html#ab818edcf1555177d10260e197e3a5e7a" title="Get the computer-usable name of the plugin.">FixedTempoEstimator::getIdentifier</a>()<span class="keyword"> const</span>
cannam@50 707 <a name="l00630"></a>00630 <span class="keyword"></span>{
cannam@50 708 <a name="l00631"></a>00631 <span class="keywordflow">return</span> <span class="stringliteral">&quot;fixedtempo&quot;</span>;
cannam@50 709 <a name="l00632"></a>00632 }
cannam@50 710 <a name="l00633"></a>00633
cannam@50 711 <a name="l00634"></a>00634 <span class="keywordtype">string</span>
cannam@50 712 <a name="l00635"></a><a class="code" href="classFixedTempoEstimator.html#af9eb6fa8a98aa66b55e64e1795f9405f">00635</a> <a class="code" href="classFixedTempoEstimator.html#af9eb6fa8a98aa66b55e64e1795f9405f" title="Get a human-readable name or title of the plugin.">FixedTempoEstimator::getName</a>()<span class="keyword"> const</span>
cannam@50 713 <a name="l00636"></a>00636 <span class="keyword"></span>{
cannam@50 714 <a name="l00637"></a>00637 <span class="keywordflow">return</span> <span class="stringliteral">&quot;Simple Fixed Tempo Estimator&quot;</span>;
cannam@50 715 <a name="l00638"></a>00638 }
cannam@50 716 <a name="l00639"></a>00639
cannam@50 717 <a name="l00640"></a>00640 <span class="keywordtype">string</span>
cannam@50 718 <a name="l00641"></a><a class="code" href="classFixedTempoEstimator.html#a06b00853f00c2e78d490697fcd7d1920">00641</a> <a class="code" href="classFixedTempoEstimator.html#a06b00853f00c2e78d490697fcd7d1920" title="Get a human-readable description for the plugin, typically a line of text that may optionally be disp...">FixedTempoEstimator::getDescription</a>()<span class="keyword"> const</span>
cannam@50 719 <a name="l00642"></a>00642 <span class="keyword"></span>{
cannam@50 720 <a name="l00643"></a>00643 <span class="keywordflow">return</span> <span class="stringliteral">&quot;Study a short section of audio and estimate its tempo, assuming the tempo is constant&quot;</span>;
cannam@50 721 <a name="l00644"></a>00644 }
cannam@50 722 <a name="l00645"></a>00645
cannam@50 723 <a name="l00646"></a>00646 <span class="keywordtype">string</span>
cannam@50 724 <a name="l00647"></a><a class="code" href="classFixedTempoEstimator.html#ae910d1b9250b11097fd6b51cd8285b68">00647</a> <a class="code" href="classFixedTempoEstimator.html#ae910d1b9250b11097fd6b51cd8285b68" title="Get the name of the author or vendor of the plugin in human-readable form.">FixedTempoEstimator::getMaker</a>()<span class="keyword"> const</span>
cannam@50 725 <a name="l00648"></a>00648 <span class="keyword"></span>{
cannam@50 726 <a name="l00649"></a>00649 <span class="keywordflow">return</span> <span class="stringliteral">&quot;Vamp SDK Example Plugins&quot;</span>;
cannam@50 727 <a name="l00650"></a>00650 }
cannam@50 728 <a name="l00651"></a>00651
cannam@50 729 <a name="l00652"></a>00652 <span class="keywordtype">int</span>
cannam@50 730 <a name="l00653"></a><a class="code" href="classFixedTempoEstimator.html#ad002fddb3735c2dd7e31e6a9def9949f">00653</a> <a class="code" href="classFixedTempoEstimator.html#ad002fddb3735c2dd7e31e6a9def9949f" title="Get the version number of the plugin.">FixedTempoEstimator::getPluginVersion</a>()<span class="keyword"> const</span>
cannam@50 731 <a name="l00654"></a>00654 <span class="keyword"></span>{
cannam@50 732 <a name="l00655"></a>00655 <span class="keywordflow">return</span> 1;
cannam@50 733 <a name="l00656"></a>00656 }
cannam@50 734 <a name="l00657"></a>00657
cannam@50 735 <a name="l00658"></a>00658 <span class="keywordtype">string</span>
cannam@50 736 <a name="l00659"></a><a class="code" href="classFixedTempoEstimator.html#a50c6b64530c84c0707ba3936c5022a48">00659</a> <a class="code" href="classFixedTempoEstimator.html#a50c6b64530c84c0707ba3936c5022a48" title="Get the copyright statement or licensing summary for the plugin.">FixedTempoEstimator::getCopyright</a>()<span class="keyword"> const</span>
cannam@50 737 <a name="l00660"></a>00660 <span class="keyword"></span>{
cannam@50 738 <a name="l00661"></a>00661 <span class="keywordflow">return</span> <span class="stringliteral">&quot;Code copyright 2008 Queen Mary, University of London. Freely redistributable (BSD license)&quot;</span>;
cannam@50 739 <a name="l00662"></a>00662 }
cannam@50 740 <a name="l00663"></a>00663
cannam@50 741 <a name="l00664"></a>00664 <span class="keywordtype">size_t</span>
cannam@50 742 <a name="l00665"></a><a class="code" href="classFixedTempoEstimator.html#ad450bb7e7df559ae3d68dfbfb085676f">00665</a> <a class="code" href="classFixedTempoEstimator.html#ad450bb7e7df559ae3d68dfbfb085676f" title="Get the preferred step size (window increment -- the distance in sample frames between the start fram...">FixedTempoEstimator::getPreferredStepSize</a>()<span class="keyword"> const</span>
cannam@50 743 <a name="l00666"></a>00666 <span class="keyword"></span>{
cannam@50 744 <a name="l00667"></a>00667 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#add749be18355ab1ae5c1ccbacfd2e192">getPreferredStepSize</a>();
cannam@50 745 <a name="l00668"></a>00668 }
cannam@50 746 <a name="l00669"></a>00669
cannam@50 747 <a name="l00670"></a>00670 <span class="keywordtype">size_t</span>
cannam@50 748 <a name="l00671"></a><a class="code" href="classFixedTempoEstimator.html#a68b8569b71504a0478caf990dbe30683">00671</a> <a class="code" href="classFixedTempoEstimator.html#a68b8569b71504a0478caf990dbe30683" title="Get the preferred block size (window size -- the number of sample frames passed in each block to the ...">FixedTempoEstimator::getPreferredBlockSize</a>()<span class="keyword"> const</span>
cannam@50 749 <a name="l00672"></a>00672 <span class="keyword"></span>{
cannam@50 750 <a name="l00673"></a>00673 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#ac02826f981736fc2aa5d835fa14e174d">getPreferredBlockSize</a>();
cannam@50 751 <a name="l00674"></a>00674 }
cannam@50 752 <a name="l00675"></a>00675
cannam@50 753 <a name="l00676"></a>00676 <span class="keywordtype">bool</span>
cannam@50 754 <a name="l00677"></a><a class="code" href="classFixedTempoEstimator.html#aa7500a4ffbc4653baaf5101defdb37f5">00677</a> <a class="code" href="classFixedTempoEstimator.html#aa7500a4ffbc4653baaf5101defdb37f5" title="Initialise a plugin to prepare it for use with the given number of input channels, step size (window increment, in sample frames) and block size (window size, in sample frames).">FixedTempoEstimator::initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize)
cannam@50 755 <a name="l00678"></a>00678 {
cannam@50 756 <a name="l00679"></a>00679 <span class="keywordflow">if</span> (channels &lt; <a class="code" href="classVamp_1_1Plugin.html#a267b42e866df3cf0d190893e8096f525" title="Get the minimum supported number of input channels.">getMinChannelCount</a>() ||
cannam@50 757 <a name="l00680"></a>00680 channels &gt; <a class="code" href="classVamp_1_1Plugin.html#a2c5ab12b6fa4847cb244bd1e9cb3ae5e" title="Get the maximum supported number of input channels.">getMaxChannelCount</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;
cannam@50 758 <a name="l00681"></a>00681
cannam@50 759 <a name="l00682"></a>00682 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#af0fcad4493650728babb7e341963c91d">initialise</a>(channels, stepSize, blockSize);
cannam@50 760 <a name="l00683"></a>00683 }
cannam@50 761 <a name="l00684"></a>00684
cannam@50 762 <a name="l00685"></a>00685 <span class="keywordtype">void</span>
cannam@50 763 <a name="l00686"></a><a class="code" href="classFixedTempoEstimator.html#ac41708397255400c6682fee6c1b3d45f">00686</a> <a class="code" href="classFixedTempoEstimator.html#ac41708397255400c6682fee6c1b3d45f" title="Reset the plugin after use, to prepare it for another clean run.">FixedTempoEstimator::reset</a>()
cannam@50 764 <a name="l00687"></a>00687 {
cannam@50 765 <a name="l00688"></a>00688 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#af5ac8147bfe79371d00aba8a19c2f8fd">reset</a>();
cannam@50 766 <a name="l00689"></a>00689 }
cannam@50 767 <a name="l00690"></a>00690
cannam@50 768 <a name="l00691"></a>00691 <a class="code" href="classVamp_1_1PluginBase.html#a3b6bb4bbd86affe1ca9deceea1aad4f8">FixedTempoEstimator::ParameterList</a>
cannam@50 769 <a name="l00692"></a><a class="code" href="classFixedTempoEstimator.html#ae157465a4e07d180bab05b5c3a4d8987">00692</a> <a class="code" href="classFixedTempoEstimator.html#ae157465a4e07d180bab05b5c3a4d8987" title="Get the controllable parameters of this plugin.">FixedTempoEstimator::getParameterDescriptors</a>()<span class="keyword"> const</span>
cannam@50 770 <a name="l00693"></a>00693 <span class="keyword"></span>{
cannam@50 771 <a name="l00694"></a>00694 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a06fcf80a9a22c4b90abbc88eb592621a">getParameterDescriptors</a>();
cannam@50 772 <a name="l00695"></a>00695 }
cannam@50 773 <a name="l00696"></a>00696
cannam@50 774 <a name="l00697"></a>00697 <span class="keywordtype">float</span>
cannam@50 775 <a name="l00698"></a><a class="code" href="classFixedTempoEstimator.html#a2030b05fb1228b30ace16200780c9152">00698</a> <a class="code" href="classFixedTempoEstimator.html#a2030b05fb1228b30ace16200780c9152" title="Get the value of a named parameter.">FixedTempoEstimator::getParameter</a>(std::string <span class="keywordtype">id</span>)<span class="keyword"> const</span>
cannam@50 776 <a name="l00699"></a>00699 <span class="keyword"></span>{
cannam@50 777 <a name="l00700"></a>00700 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a968ef2e555c81e4a3bde89d19fafb31a">getParameter</a>(<span class="keywordtype">id</span>);
cannam@50 778 <a name="l00701"></a>00701 }
cannam@50 779 <a name="l00702"></a>00702
cannam@50 780 <a name="l00703"></a>00703 <span class="keywordtype">void</span>
cannam@50 781 <a name="l00704"></a><a class="code" href="classFixedTempoEstimator.html#a8a5a413025384cf451c64d2c2ce13a75">00704</a> <a class="code" href="classFixedTempoEstimator.html#a8a5a413025384cf451c64d2c2ce13a75" title="Set a named parameter.">FixedTempoEstimator::setParameter</a>(std::string <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value)
cannam@50 782 <a name="l00705"></a>00705 {
cannam@50 783 <a name="l00706"></a>00706 <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a6cafa64d4cc8aa3556bc0ce6b0c49bc4">setParameter</a>(<span class="keywordtype">id</span>, value);
cannam@50 784 <a name="l00707"></a>00707 }
cannam@50 785 <a name="l00708"></a>00708
cannam@50 786 <a name="l00709"></a>00709 <a class="code" href="classVamp_1_1Plugin.html#a30f531b8fb69fac41a24e3d2a6a08ed9">FixedTempoEstimator::OutputList</a>
cannam@50 787 <a name="l00710"></a><a class="code" href="classFixedTempoEstimator.html#a83121c205a723fe6297e2bf8870622a4">00710</a> <a class="code" href="classFixedTempoEstimator.html#a83121c205a723fe6297e2bf8870622a4" title="Get the outputs of this plugin.">FixedTempoEstimator::getOutputDescriptors</a>()<span class="keyword"> const</span>
cannam@50 788 <a name="l00711"></a>00711 <span class="keyword"></span>{
cannam@50 789 <a name="l00712"></a>00712 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a7ce98af800f36045a0dae4b1dbed943f">getOutputDescriptors</a>();
cannam@50 790 <a name="l00713"></a>00713 }
cannam@50 791 <a name="l00714"></a>00714
cannam@50 792 <a name="l00715"></a>00715 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
cannam@50 793 <a name="l00716"></a><a class="code" href="classFixedTempoEstimator.html#a1cf76b0e55cf4ed3da095cffcdeaec3c">00716</a> <a class="code" href="classFixedTempoEstimator.html#a1cf76b0e55cf4ed3da095cffcdeaec3c" title="Process a single block of input data.">FixedTempoEstimator::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 and frame-rate conve...">RealTime</a> ts)
cannam@50 794 <a name="l00717"></a>00717 {
cannam@50 795 <a name="l00718"></a>00718 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a7fac74fc9fc54f436408705d1e125e20">process</a>(inputBuffers, ts);
cannam@50 796 <a name="l00719"></a>00719 }
cannam@50 797 <a name="l00720"></a>00720
cannam@50 798 <a name="l00721"></a>00721 <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
cannam@50 799 <a name="l00722"></a><a class="code" href="classFixedTempoEstimator.html#a4965cf99be77fc4d1de51e11d83936b0">00722</a> <a class="code" href="classFixedTempoEstimator.html#a4965cf99be77fc4d1de51e11d83936b0" title="After all blocks have been processed, calculate and return any remaining features derived from the co...">FixedTempoEstimator::getRemainingFeatures</a>()
cannam@50 800 <a name="l00723"></a>00723 {
cannam@50 801 <a name="l00724"></a>00724 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#a5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#a7f9c3603bb3374d6936885010dbdd82b">getRemainingFeatures</a>();
cannam@50 802 <a name="l00725"></a>00725 }
cannam@50 803 </pre></div></div>
cannam@50 804 </div>
cannam@50 805 <div id="nav-path" class="navpath">
cannam@50 806 <ul>
cannam@50 807 <li class="navelem"><a class="el" href="FixedTempoEstimator_8cpp.html">FixedTempoEstimator.cpp</a> </li>
cannam@50 808
cannam@50 809 <li class="footer">Generated on Tue Oct 4 2011 14:38:48 for VampPluginSDK by
cannam@50 810 <a href="http://www.doxygen.org/index.html">
cannam@50 811 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.5.1 </li>
cannam@50 812 </ul>
cannam@50 813 </div>
cannam@50 814
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