Mercurial > hg > vamp-website

comparison code-doc/FixedTempoEstimator_8cpp-source.html @ 21:cc0be37dc9d3 website

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* Updates for 2.0
author cannam
date Tue, 09 Dec 2008 11:02:57 +0000
parents
children 0976232e353b
comparison
equal deleted inserted replaced
20:34e758355884 21:cc0be37dc9d3
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
2 <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
3 <title>VampPluginSDK: FixedTempoEstimator.cpp Source File</title>
4 <link href="doxygen.css" rel="stylesheet" type="text/css">
5 <link href="tabs.css" rel="stylesheet" type="text/css">
6 </head><body>
7 <!-- Generated by Doxygen 1.5.6 -->
8 <div class="navigation" id="top">
9 <div class="tabs">
10 <ul>
11 <li><a href="main.html"><span>Main&nbsp;Page</span></a></li>
12 <li><a href="namespaces.html"><span>Namespaces</span></a></li>
13 <li><a href="annotated.html"><span>Classes</span></a></li>
14 <li class="current"><a href="files.html"><span>Files</span></a></li>
15 <li><a href="dirs.html"><span>Directories</span></a></li>
16 </ul>
17 </div>
18 <div class="navpath"><a class="el" href="dir_35887283b966ca996e4ff77f459c38ce.html">examples</a>
19 </div>
20 </div>
21 <div class="contents">
22 <h1>FixedTempoEstimator.cpp</h1><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>
23 <a name="l00002"></a>00002
24 <a name="l00003"></a>00003 <span class="comment">/*</span>
25 <a name="l00004"></a>00004 <span class="comment"> Vamp</span>
26 <a name="l00005"></a>00005 <span class="comment"></span>
27 <a name="l00006"></a>00006 <span class="comment"> An API for audio analysis and feature extraction plugins.</span>
28 <a name="l00007"></a>00007 <span class="comment"></span>
29 <a name="l00008"></a>00008 <span class="comment"> Centre for Digital Music, Queen Mary, University of London.</span>
30 <a name="l00009"></a>00009 <span class="comment"> Copyright 2006-2008 Chris Cannam and QMUL.</span>
31 <a name="l00010"></a>00010 <span class="comment"> </span>
32 <a name="l00011"></a>00011 <span class="comment"> Permission is hereby granted, free of charge, to any person</span>
33 <a name="l00012"></a>00012 <span class="comment"> obtaining a copy of this software and associated documentation</span>
34 <a name="l00013"></a>00013 <span class="comment"> files (the "Software"), to deal in the Software without</span>
35 <a name="l00014"></a>00014 <span class="comment"> restriction, including without limitation the rights to use, copy,</span>
36 <a name="l00015"></a>00015 <span class="comment"> modify, merge, publish, distribute, sublicense, and/or sell copies</span>
37 <a name="l00016"></a>00016 <span class="comment"> of the Software, and to permit persons to whom the Software is</span>
38 <a name="l00017"></a>00017 <span class="comment"> furnished to do so, subject to the following conditions:</span>
39 <a name="l00018"></a>00018 <span class="comment"></span>
40 <a name="l00019"></a>00019 <span class="comment"> The above copyright notice and this permission notice shall be</span>
41 <a name="l00020"></a>00020 <span class="comment"> included in all copies or substantial portions of the Software.</span>
42 <a name="l00021"></a>00021 <span class="comment"></span>
43 <a name="l00022"></a>00022 <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span>
44 <a name="l00023"></a>00023 <span class="comment"> EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
45 <a name="l00024"></a>00024 <span class="comment"> MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span>
46 <a name="l00025"></a>00025 <span class="comment"> NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR</span>
47 <a name="l00026"></a>00026 <span class="comment"> ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF</span>
48 <a name="l00027"></a>00027 <span class="comment"> CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span>
49 <a name="l00028"></a>00028 <span class="comment"> WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
50 <a name="l00029"></a>00029 <span class="comment"></span>
51 <a name="l00030"></a>00030 <span class="comment"> Except as contained in this notice, the names of the Centre for</span>
52 <a name="l00031"></a>00031 <span class="comment"> Digital Music; Queen Mary, University of London; and Chris Cannam</span>
53 <a name="l00032"></a>00032 <span class="comment"> shall not be used in advertising or otherwise to promote the sale,</span>
54 <a name="l00033"></a>00033 <span class="comment"> use or other dealings in this Software without prior written</span>
55 <a name="l00034"></a>00034 <span class="comment"> authorization.</span>
56 <a name="l00035"></a>00035 <span class="comment">*/</span>
57 <a name="l00036"></a>00036
58 <a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="FixedTempoEstimator_8h.html">FixedTempoEstimator.h</a>"</span>
59 <a name="l00038"></a>00038
60 <a name="l00039"></a>00039 <span class="keyword">using</span> std::string;
61 <a name="l00040"></a>00040 <span class="keyword">using</span> std::vector;
62 <a name="l00041"></a>00041 <span class="keyword">using</span> std::cerr;
63 <a name="l00042"></a>00042 <span class="keyword">using</span> std::endl;
64 <a name="l00043"></a>00043
65 <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...">Vamp::RealTime</a>;
66 <a name="l00045"></a>00045
67 <a name="l00046"></a>00046 <span class="preprocessor">#include &lt;cmath&gt;</span>
68 <a name="l00047"></a>00047
69 <a name="l00048"></a>00048
70 <a name="l00049"></a><a class="code" href="classFixedTempoEstimator_1_1D.html">00049</a> <span class="keyword">class </span><a class="code" href="classFixedTempoEstimator_1_1D.html">FixedTempoEstimator::D</a>
71 <a name="l00050"></a>00050 <span class="comment">// this class just avoids us having to declare any data members in the header</span>
72 <a name="l00051"></a>00051 {
73 <a name="l00052"></a>00052 <span class="keyword">public</span>:
74 <a name="l00053"></a>00053 <a class="code" href="classFixedTempoEstimator_1_1D.html#104a9b64d47eca678844584f69ca0b9d">D</a>(<span class="keywordtype">float</span> inputSampleRate);
75 <a name="l00054"></a>00054 <a class="code" href="classFixedTempoEstimator_1_1D.html#78a63ac8bbf342cb0405747871adf4cc">~D</a>();
76 <a name="l00055"></a>00055
77 <a name="l00056"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#dd749be18355ab1ae5c1ccbacfd2e192">00056</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#dd749be18355ab1ae5c1ccbacfd2e192">getPreferredStepSize</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 64; }
78 <a name="l00057"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#c02826f981736fc2aa5d835fa14e174d">00057</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#c02826f981736fc2aa5d835fa14e174d">getPreferredBlockSize</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 256; }
79 <a name="l00058"></a>00058
80 <a name="l00059"></a>00059 <a class="code" href="classVamp_1_1PluginBase.html#3b6bb4bbd86affe1ca9deceea1aad4f8">ParameterList</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#06fcf80a9a22c4b90abbc88eb592621a">getParameterDescriptors</a>() <span class="keyword">const</span>;
81 <a name="l00060"></a>00060 <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#968ef2e555c81e4a3bde89d19fafb31a">getParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>) <span class="keyword">const</span>;
82 <a name="l00061"></a>00061 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#6cafa64d4cc8aa3556bc0ce6b0c49bc4">setParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value);
83 <a name="l00062"></a>00062
84 <a name="l00063"></a>00063 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7ce98af800f36045a0dae4b1dbed943f">getOutputDescriptors</a>() <span class="keyword">const</span>;
85 <a name="l00064"></a>00064
86 <a name="l00065"></a>00065 <span class="keywordtype">bool</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#f0fcad4493650728babb7e341963c91d">initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize);
87 <a name="l00066"></a>00066 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#f5ac8147bfe79371d00aba8a19c2f8fd">reset</a>();
88 <a name="l00067"></a>00067 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7fac74fc9fc54f436408705d1e125e20">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...">RealTime</a>);
89 <a name="l00068"></a>00068 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7f9c3603bb3374d6936885010dbdd82b">getRemainingFeatures</a>();
90 <a name="l00069"></a>00069
91 <a name="l00070"></a>00070 <span class="keyword">private</span>:
92 <a name="l00071"></a>00071 <span class="keywordtype">void</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#4f2cbc11fba5bc8af3fd2a0078156091">calculate</a>();
93 <a name="l00072"></a>00072 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#20389ba1515f6ce4181d3f41e5c4f347">assembleFeatures</a>();
94 <a name="l00073"></a>00073
95 <a name="l00074"></a>00074 <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(<span class="keywordtype">int</span>);
96 <a name="l00075"></a>00075 <span class="keywordtype">int</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#c6a75212293fc855de6ed0c6581a0fb9">tempo2lag</a>(<span class="keywordtype">float</span>);
97 <a name="l00076"></a>00076
98 <a name="l00077"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">00077</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>;
99 <a name="l00078"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">00078</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>;
100 <a name="l00079"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">00079</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>;
101 <a name="l00080"></a>00080
102 <a name="l00081"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#768fdbb62e4b21a39897963fdbd486ed">00081</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#768fdbb62e4b21a39897963fdbd486ed">m_minbpm</a>;
103 <a name="l00082"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#33e8d045b222addc6173b50df2553ba8">00082</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#33e8d045b222addc6173b50df2553ba8">m_maxbpm</a>;
104 <a name="l00083"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#ca506973452865d436e07462eabdebad">00083</a> <span class="keywordtype">float</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ca506973452865d436e07462eabdebad">m_maxdflen</a>;
105 <a name="l00084"></a>00084
106 <a name="l00085"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">00085</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>;
107 <a name="l00086"></a>00086
108 <a name="l00087"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">00087</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>;
109 <a name="l00088"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">00088</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>;
110 <a name="l00089"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">00089</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>;
111 <a name="l00090"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">00090</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>;
112 <a name="l00091"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">00091</a> <span class="keywordtype">float</span> *<a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>;
113 <a name="l00092"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">00092</a> <span class="keywordtype">size_t</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>;
114 <a name="l00093"></a>00093
115 <a name="l00094"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">00094</a> <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">Vamp::RealTime</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a>;
116 <a name="l00095"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#bacd5ff19c301020efb99c03136b849a">00095</a> <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">Vamp::RealTime</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#bacd5ff19c301020efb99c03136b849a">m_lasttime</a>;
117 <a name="l00096"></a>00096 };
118 <a name="l00097"></a>00097
119 <a name="l00098"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#104a9b64d47eca678844584f69ca0b9d">00098</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#104a9b64d47eca678844584f69ca0b9d">FixedTempoEstimator::D::D</a>(<span class="keywordtype">float</span> inputSampleRate) :
120 <a name="l00099"></a>00099 m_inputSampleRate(inputSampleRate),
121 <a name="l00100"></a>00100 m_stepSize(0),
122 <a name="l00101"></a>00101 m_blockSize(0),
123 <a name="l00102"></a>00102 m_minbpm(50),
124 <a name="l00103"></a>00103 m_maxbpm(190),
125 <a name="l00104"></a>00104 m_maxdflen(10),
126 <a name="l00105"></a>00105 m_priorMagnitudes(0),
127 <a name="l00106"></a>00106 m_df(0),
128 <a name="l00107"></a>00107 m_r(0),
129 <a name="l00108"></a>00108 m_fr(0),
130 <a name="l00109"></a>00109 m_t(0),
131 <a name="l00110"></a>00110 m_n(0)
132 <a name="l00111"></a>00111 {
133 <a name="l00112"></a>00112 }
134 <a name="l00113"></a>00113
135 <a name="l00114"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#78a63ac8bbf342cb0405747871adf4cc">00114</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#78a63ac8bbf342cb0405747871adf4cc">FixedTempoEstimator::D::~D</a>()
136 <a name="l00115"></a>00115 {
137 <a name="l00116"></a>00116 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>;
138 <a name="l00117"></a>00117 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>;
139 <a name="l00118"></a>00118 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>;
140 <a name="l00119"></a>00119 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>;
141 <a name="l00120"></a>00120 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>;
142 <a name="l00121"></a>00121 }
143 <a name="l00122"></a>00122
144 <a name="l00123"></a>00123 <a class="code" href="classVamp_1_1PluginBase.html#3b6bb4bbd86affe1ca9deceea1aad4f8">FixedTempoEstimator::ParameterList</a>
145 <a name="l00124"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#06fcf80a9a22c4b90abbc88eb592621a">00124</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#06fcf80a9a22c4b90abbc88eb592621a">FixedTempoEstimator::D::getParameterDescriptors</a>()<span class="keyword"> const</span>
146 <a name="l00125"></a>00125 <span class="keyword"></span>{
147 <a name="l00126"></a>00126 <a class="code" href="classVamp_1_1PluginBase.html#3b6bb4bbd86affe1ca9deceea1aad4f8">ParameterList</a> list;
148 <a name="l00127"></a>00127
149 <a name="l00128"></a>00128 <a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html">ParameterDescriptor</a> d;
150 <a name="l00129"></a>00129 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">"minbpm"</span>;
151 <a name="l00130"></a>00130 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">"Minimum estimated tempo"</span>;
152 <a name="l00131"></a>00131 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">"Minimum beat-per-minute value which the tempo estimator is able to return"</span>;
153 <a name="l00132"></a>00132 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#3bc3df322e4c02e17e96bc6d44982d7b" title="The unit of the parameter, in human-readable form.">unit</a> = <span class="stringliteral">"bpm"</span>;
154 <a name="l00133"></a>00133 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#b3e4d84f5bc199eea8b642b27e425ec8" title="The minimum value of the parameter.">minValue</a> = 10;
155 <a name="l00134"></a>00134 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#b934b20dd708228a0e3c2811a3e2cec4" title="The maximum value of the parameter.">maxValue</a> = 360;
156 <a name="l00135"></a>00135 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 50;
157 <a name="l00136"></a>00136 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#7c556d58d552f737ee5a34efdf7f9425" title="True if the parameter values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
158 <a name="l00137"></a>00137 list.push_back(d);
159 <a name="l00138"></a>00138
160 <a name="l00139"></a>00139 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">"maxbpm"</span>;
161 <a name="l00140"></a>00140 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">"Maximum estimated tempo"</span>;
162 <a name="l00141"></a>00141 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">"Maximum beat-per-minute value which the tempo estimator is able to return"</span>;
163 <a name="l00142"></a>00142 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 190;
164 <a name="l00143"></a>00143 list.push_back(d);
165 <a name="l00144"></a>00144
166 <a name="l00145"></a>00145 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#116fd9f0dc94c2bc4bbc60b5443c598c" title="The name of the parameter, in computer-usable form.">identifier</a> = <span class="stringliteral">"maxdflen"</span>;
167 <a name="l00146"></a>00146 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#0ecebb94fb4ada4aad2640e20aa57084" title="The human-readable name of the parameter.">name</a> = <span class="stringliteral">"Input duration to study"</span>;
168 <a name="l00147"></a>00147 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#780ddad41e433d85c82f9ea4d959cbaf" title="A human-readable short text describing the parameter.">description</a> = <span class="stringliteral">"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."</span>;
169 <a name="l00148"></a>00148 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#3bc3df322e4c02e17e96bc6d44982d7b" title="The unit of the parameter, in human-readable form.">unit</a> = <span class="stringliteral">"s"</span>;
170 <a name="l00149"></a>00149 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#b3e4d84f5bc199eea8b642b27e425ec8" title="The minimum value of the parameter.">minValue</a> = 2;
171 <a name="l00150"></a>00150 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#b934b20dd708228a0e3c2811a3e2cec4" title="The maximum value of the parameter.">maxValue</a> = 40;
172 <a name="l00151"></a>00151 d.<a class="code" href="structVamp_1_1PluginBase_1_1ParameterDescriptor.html#ec4ef77451ec02193ecc4a0856673fbc" title="The default value of the parameter.">defaultValue</a> = 10;
173 <a name="l00152"></a>00152 list.push_back(d);
174 <a name="l00153"></a>00153
175 <a name="l00154"></a>00154 <span class="keywordflow">return</span> list;
176 <a name="l00155"></a>00155 }
177 <a name="l00156"></a>00156
178 <a name="l00157"></a>00157 <span class="keywordtype">float</span>
179 <a name="l00158"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#968ef2e555c81e4a3bde89d19fafb31a">00158</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#968ef2e555c81e4a3bde89d19fafb31a">FixedTempoEstimator::D::getParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>)<span class="keyword"> const</span>
180 <a name="l00159"></a>00159 <span class="keyword"></span>{
181 <a name="l00160"></a>00160 <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"minbpm"</span>) {
182 <a name="l00161"></a>00161 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#768fdbb62e4b21a39897963fdbd486ed">m_minbpm</a>;
183 <a name="l00162"></a>00162 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"maxbpm"</span>) {
184 <a name="l00163"></a>00163 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#33e8d045b222addc6173b50df2553ba8">m_maxbpm</a>;
185 <a name="l00164"></a>00164 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"maxdflen"</span>) {
186 <a name="l00165"></a>00165 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator_1_1D.html#ca506973452865d436e07462eabdebad">m_maxdflen</a>;
187 <a name="l00166"></a>00166 }
188 <a name="l00167"></a>00167 <span class="keywordflow">return</span> 0.f;
189 <a name="l00168"></a>00168 }
190 <a name="l00169"></a>00169
191 <a name="l00170"></a>00170 <span class="keywordtype">void</span>
192 <a name="l00171"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#6cafa64d4cc8aa3556bc0ce6b0c49bc4">00171</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#6cafa64d4cc8aa3556bc0ce6b0c49bc4">FixedTempoEstimator::D::setParameter</a>(<span class="keywordtype">string</span> <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value)
193 <a name="l00172"></a>00172 {
194 <a name="l00173"></a>00173 <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"minbpm"</span>) {
195 <a name="l00174"></a>00174 <a class="code" href="classFixedTempoEstimator_1_1D.html#768fdbb62e4b21a39897963fdbd486ed">m_minbpm</a> = value;
196 <a name="l00175"></a>00175 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"maxbpm"</span>) {
197 <a name="l00176"></a>00176 <a class="code" href="classFixedTempoEstimator_1_1D.html#33e8d045b222addc6173b50df2553ba8">m_maxbpm</a> = value;
198 <a name="l00177"></a>00177 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == <span class="stringliteral">"maxdflen"</span>) {
199 <a name="l00178"></a>00178 <a class="code" href="classFixedTempoEstimator_1_1D.html#ca506973452865d436e07462eabdebad">m_maxdflen</a> = value;
200 <a name="l00179"></a>00179 }
201 <a name="l00180"></a>00180 }
202 <a name="l00181"></a>00181
203 <a name="l00182"></a><a class="code" href="FixedTempoEstimator_8cpp.html#7a8511e62dffb5334ad3b70d57b2fcee">00182</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#7a8511e62dffb5334ad3b70d57b2fcee">TempoOutput</a> = 0;
204 <a name="l00183"></a><a class="code" href="FixedTempoEstimator_8cpp.html#554b16c6b7516530e52c65318bfe08eb">00183</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#554b16c6b7516530e52c65318bfe08eb">CandidatesOutput</a> = 1;
205 <a name="l00184"></a><a class="code" href="FixedTempoEstimator_8cpp.html#caa4524f29afce03c812a88ff31159c1">00184</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#caa4524f29afce03c812a88ff31159c1">DFOutput</a> = 2;
206 <a name="l00185"></a><a class="code" href="FixedTempoEstimator_8cpp.html#382c1fe740ac8911c6078cfbceffc870">00185</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#382c1fe740ac8911c6078cfbceffc870">ACFOutput</a> = 3;
207 <a name="l00186"></a><a class="code" href="FixedTempoEstimator_8cpp.html#5b284021783d79785d46b043b458368d">00186</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="FixedTempoEstimator_8cpp.html#5b284021783d79785d46b043b458368d">FilteredACFOutput</a> = 4;
208 <a name="l00187"></a>00187
209 <a name="l00188"></a>00188 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">FixedTempoEstimator::OutputList</a>
210 <a name="l00189"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#7ce98af800f36045a0dae4b1dbed943f">00189</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7ce98af800f36045a0dae4b1dbed943f">FixedTempoEstimator::D::getOutputDescriptors</a>()<span class="keyword"> const</span>
211 <a name="l00190"></a>00190 <span class="keyword"></span>{
212 <a name="l00191"></a>00191 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> list;
213 <a name="l00192"></a>00192
214 <a name="l00193"></a>00193 <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html">OutputDescriptor</a> d;
215 <a name="l00194"></a>00194 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">"tempo"</span>;
216 <a name="l00195"></a>00195 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">"Tempo"</span>;
217 <a name="l00196"></a>00196 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">"Estimated tempo"</span>;
218 <a name="l00197"></a>00197 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">"bpm"</span>;
219 <a name="l00198"></a>00198 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample...">hasFixedBinCount</a> = <span class="keyword">true</span>;
220 <a name="l00199"></a>00199 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#fdd006959a995e40ef7d565a3a4df6dc" title="The number of values per result of the output.">binCount</a> = 1;
221 <a name="l00200"></a>00200 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum...">hasKnownExtents</a> = <span class="keyword">false</span>;
222 <a name="l00201"></a>00201 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#1b4858928d23bfd7d5bc557c82a83fb4" title="True if the output values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
223 <a name="l00202"></a>00202 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#0d1194980d44e31b25ef3b4b070d6b5d" title="Positioning in time of the output results.">sampleType</a> = <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#bffa9ed50cd756df70fd51f0355f448cdea995a737867f7b22b52f1c43c5432e" title="Results are unevenly spaced and have individual timestamps.">OutputDescriptor::VariableSampleRate</a>;
224 <a name="l00203"></a>00203 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#dd0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>;
225 <a name="l00204"></a>00204 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b0d7cc6ab19e53b5bd12ee234f549ea3" 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>
226 <a name="l00205"></a>00205 list.push_back(d);
227 <a name="l00206"></a>00206
228 <a name="l00207"></a>00207 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">"candidates"</span>;
229 <a name="l00208"></a>00208 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">"Tempo candidates"</span>;
230 <a name="l00209"></a>00209 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">"Possible tempo estimates, one per bin with the most likely in the first bin"</span>;
231 <a name="l00210"></a>00210 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">"bpm"</span>;
232 <a name="l00211"></a>00211 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample...">hasFixedBinCount</a> = <span class="keyword">false</span>;
233 <a name="l00212"></a>00212 list.push_back(d);
234 <a name="l00213"></a>00213
235 <a name="l00214"></a>00214 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">"detectionfunction"</span>;
236 <a name="l00215"></a>00215 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">"Detection Function"</span>;
237 <a name="l00216"></a>00216 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">"Onset detection function"</span>;
238 <a name="l00217"></a>00217 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">""</span>;
239 <a name="l00218"></a>00218 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f0e577e1a256ff6eed6ea42133fec77d" title="True if the output has the same number of values per sample for every output sample...">hasFixedBinCount</a> = 1;
240 <a name="l00219"></a>00219 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#fdd006959a995e40ef7d565a3a4df6dc" title="The number of values per result of the output.">binCount</a> = 1;
241 <a name="l00220"></a>00220 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum...">hasKnownExtents</a> = <span class="keyword">true</span>;
242 <a name="l00221"></a>00221 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#c9f5924c0be7571bba8e7ae7e7a921f4" title="Minimum value of the results in the output.">minValue</a> = 0.0;
243 <a name="l00222"></a>00222 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#907b4e8fbb48a46ac5a05f880d72719f" title="Maximum value of the results in the output.">maxValue</a> = 1.0;
244 <a name="l00223"></a>00223 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#1b4858928d23bfd7d5bc557c82a83fb4" title="True if the output values are quantized to a particular resolution.">isQuantized</a> = <span class="keyword">false</span>;
245 <a name="l00224"></a>00224 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#3bed37153067b625b95acb40b60dbf0b" title="Quantization resolution of the output values (e.g.">quantizeStep</a> = 0.0;
246 <a name="l00225"></a>00225 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#0d1194980d44e31b25ef3b4b070d6b5d" title="Positioning in time of the output results.">sampleType</a> = <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#bffa9ed50cd756df70fd51f0355f448c4c74bd2fc96dfe2815623f94b40e5629" title="Results are evenly spaced in time (sampleRate specified below).">OutputDescriptor::FixedSampleRate</a>;
247 <a name="l00226"></a>00226 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>) {
248 <a name="l00227"></a>00227 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#dd0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a> / <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>;
249 <a name="l00228"></a>00228 } <span class="keywordflow">else</span> {
250 <a name="l00229"></a>00229 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#dd0cbbdfa9c91764037c39365b1d42af" title="Sample rate of the output results, as samples per second.">sampleRate</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a> / (<a class="code" href="classFixedTempoEstimator_1_1D.html#c02826f981736fc2aa5d835fa14e174d">getPreferredBlockSize</a>()/2);
251 <a name="l00230"></a>00230 }
252 <a name="l00231"></a>00231 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b0d7cc6ab19e53b5bd12ee234f549ea3" title="True if the returned results for this output are known to have a duration field.">hasDuration</a> = <span class="keyword">false</span>;
253 <a name="l00232"></a>00232 list.push_back(d);
254 <a name="l00233"></a>00233
255 <a name="l00234"></a>00234 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">"acf"</span>;
256 <a name="l00235"></a>00235 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">"Autocorrelation Function"</span>;
257 <a name="l00236"></a>00236 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">"Autocorrelation of onset detection function"</span>;
258 <a name="l00237"></a>00237 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e9ccb65f99f477096b65dd031f4c5e31" title="True if the results in each output bin fall within a fixed numeric range (minimum...">hasKnownExtents</a> = <span class="keyword">false</span>;
259 <a name="l00238"></a>00238 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">"r"</span>;
260 <a name="l00239"></a>00239 list.push_back(d);
261 <a name="l00240"></a>00240
262 <a name="l00241"></a>00241 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#e2c893ddb1860589517ab7eaa989a18b" title="The name of the output, in computer-usable form.">identifier</a> = <span class="stringliteral">"filtered_acf"</span>;
263 <a name="l00242"></a>00242 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#b824b2b34ee50f897a30901c620e8d87" title="The human-readable name of the output.">name</a> = <span class="stringliteral">"Filtered Autocorrelation"</span>;
264 <a name="l00243"></a>00243 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#f9b4fe8f78e7126ead820ba5dc55efd1" title="A human-readable short text describing the output.">description</a> = <span class="stringliteral">"Filtered autocorrelation of onset detection function"</span>;
265 <a name="l00244"></a>00244 d.<a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html#a057a8833fa037f06ac9f7b85b85d5e4" title="The unit of the output, in human-readable form.">unit</a> = <span class="stringliteral">"r"</span>;
266 <a name="l00245"></a>00245 list.push_back(d);
267 <a name="l00246"></a>00246
268 <a name="l00247"></a>00247 <span class="keywordflow">return</span> list;
269 <a name="l00248"></a>00248 }
270 <a name="l00249"></a>00249
271 <a name="l00250"></a>00250 <span class="keywordtype">bool</span>
272 <a name="l00251"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#f0fcad4493650728babb7e341963c91d">00251</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#f0fcad4493650728babb7e341963c91d">FixedTempoEstimator::D::initialise</a>(<span class="keywordtype">size_t</span>, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize)
273 <a name="l00252"></a>00252 {
274 <a name="l00253"></a>00253 <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a> = stepSize;
275 <a name="l00254"></a>00254 <a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a> = blockSize;
276 <a name="l00255"></a>00255
277 <a name="l00256"></a>00256 <span class="keywordtype">float</span> dfLengthSecs = <a class="code" href="classFixedTempoEstimator_1_1D.html#ca506973452865d436e07462eabdebad">m_maxdflen</a>;
278 <a name="l00257"></a>00257 <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a> = (dfLengthSecs * <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>) / <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>;
279 <a name="l00258"></a>00258
280 <a name="l00259"></a>00259 <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[<a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>/2];
281 <a name="l00260"></a>00260 <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[<a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>];
282 <a name="l00261"></a>00261
283 <a name="l00262"></a>00262 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>/2; ++i) {
284 <a name="l00263"></a>00263 <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>[i] = 0.f;
285 <a name="l00264"></a>00264 }
286 <a name="l00265"></a>00265 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>; ++i) {
287 <a name="l00266"></a>00266 <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[i] = 0.f;
288 <a name="l00267"></a>00267 }
289 <a name="l00268"></a>00268
290 <a name="l00269"></a>00269 <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> = 0;
291 <a name="l00270"></a>00270
292 <a name="l00271"></a>00271 <span class="keywordflow">return</span> <span class="keyword">true</span>;
293 <a name="l00272"></a>00272 }
294 <a name="l00273"></a>00273
295 <a name="l00274"></a>00274 <span class="keywordtype">void</span>
296 <a name="l00275"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#f5ac8147bfe79371d00aba8a19c2f8fd">00275</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#f5ac8147bfe79371d00aba8a19c2f8fd">FixedTempoEstimator::D::reset</a>()
297 <a name="l00276"></a>00276 {
298 <a name="l00277"></a>00277 <span class="keywordflow">if</span> (!<a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>) <span class="keywordflow">return</span>;
299 <a name="l00278"></a>00278
300 <a name="l00279"></a>00279 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>/2; ++i) {
301 <a name="l00280"></a>00280 <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>[i] = 0.f;
302 <a name="l00281"></a>00281 }
303 <a name="l00282"></a>00282 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>; ++i) {
304 <a name="l00283"></a>00283 <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[i] = 0.f;
305 <a name="l00284"></a>00284 }
306 <a name="l00285"></a>00285
307 <a name="l00286"></a>00286 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>;
308 <a name="l00287"></a>00287 <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a> = 0;
309 <a name="l00288"></a>00288
310 <a name="l00289"></a>00289 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>;
311 <a name="l00290"></a>00290 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a> = 0;
312 <a name="l00291"></a>00291
313 <a name="l00292"></a>00292 <span class="keyword">delete</span>[] <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>;
314 <a name="l00293"></a>00293 <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a> = 0;
315 <a name="l00294"></a>00294
316 <a name="l00295"></a>00295 <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> = 0;
317 <a name="l00296"></a>00296
318 <a name="l00297"></a>00297 <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a> = RealTime::zeroTime;
319 <a name="l00298"></a>00298 <a class="code" href="classFixedTempoEstimator_1_1D.html#bacd5ff19c301020efb99c03136b849a">m_lasttime</a> = RealTime::zeroTime;
320 <a name="l00299"></a>00299 }
321 <a name="l00300"></a>00300
322 <a name="l00301"></a>00301 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
323 <a name="l00302"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#7fac74fc9fc54f436408705d1e125e20">00302</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7fac74fc9fc54f436408705d1e125e20">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...">RealTime</a> ts)
324 <a name="l00303"></a>00303 {
325 <a name="l00304"></a>00304 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
326 <a name="l00305"></a>00305
327 <a name="l00306"></a>00306 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a> == 0) {
328 <a name="l00307"></a>00307 cerr &lt;&lt; <span class="stringliteral">"ERROR: FixedTempoEstimator::process: "</span>
329 <a name="l00308"></a>00308 &lt;&lt; <span class="stringliteral">"FixedTempoEstimator has not been initialised"</span>
330 <a name="l00309"></a>00309 &lt;&lt; endl;
331 <a name="l00310"></a>00310 <span class="keywordflow">return</span> fs;
332 <a name="l00311"></a>00311 }
333 <a name="l00312"></a>00312
334 <a name="l00313"></a>00313 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> == 0) <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a> = ts;
335 <a name="l00314"></a>00314 <a class="code" href="classFixedTempoEstimator_1_1D.html#bacd5ff19c301020efb99c03136b849a">m_lasttime</a> = ts;
336 <a name="l00315"></a>00315
337 <a name="l00316"></a>00316 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> == <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>) {
338 <a name="l00317"></a>00317 <span class="comment">// If we have seen enough input, do the estimation and return</span>
339 <a name="l00318"></a>00318 <a class="code" href="classFixedTempoEstimator_1_1D.html#4f2cbc11fba5bc8af3fd2a0078156091">calculate</a>();
340 <a name="l00319"></a>00319 fs = <a class="code" href="classFixedTempoEstimator_1_1D.html#20389ba1515f6ce4181d3f41e5c4f347">assembleFeatures</a>();
341 <a name="l00320"></a>00320 ++<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>;
342 <a name="l00321"></a>00321 <span class="keywordflow">return</span> fs;
343 <a name="l00322"></a>00322 }
344 <a name="l00323"></a>00323
345 <a name="l00324"></a>00324 <span class="comment">// If we have seen more than enough, just discard and return!</span>
346 <a name="l00325"></a>00325 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>) <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>();
347 <a name="l00326"></a>00326
348 <a name="l00327"></a>00327 <span class="keywordtype">float</span> value = 0.f;
349 <a name="l00328"></a>00328
350 <a name="l00329"></a>00329 <span class="comment">// m_df will contain an onset detection function based on the rise</span>
351 <a name="l00330"></a>00330 <span class="comment">// in overall power from one spectral frame to the next --</span>
352 <a name="l00331"></a>00331 <span class="comment">// simplistic but reasonably effective for our purposes.</span>
353 <a name="l00332"></a>00332
354 <a name="l00333"></a>00333 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 1; i &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#0b9bf37e600f0564b9f305f73a9517c8">m_blockSize</a>/2; ++i) {
355 <a name="l00334"></a>00334
356 <a name="l00335"></a>00335 <span class="keywordtype">float</span> real = inputBuffers[0][i*2];
357 <a name="l00336"></a>00336 <span class="keywordtype">float</span> imag = inputBuffers[0][i*2 + 1];
358 <a name="l00337"></a>00337
359 <a name="l00338"></a>00338 <span class="keywordtype">float</span> sqrmag = real * real + imag * imag;
360 <a name="l00339"></a>00339 value += fabsf(sqrmag - <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>[i]);
361 <a name="l00340"></a>00340
362 <a name="l00341"></a>00341 <a class="code" href="classFixedTempoEstimator_1_1D.html#a59cf1cb5640a910c70884579e5d99ad">m_priorMagnitudes</a>[i] = sqrmag;
363 <a name="l00342"></a>00342 }
364 <a name="l00343"></a>00343
365 <a name="l00344"></a>00344 <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>] = value;
366 <a name="l00345"></a>00345
367 <a name="l00346"></a>00346 ++<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>;
368 <a name="l00347"></a>00347 <span class="keywordflow">return</span> fs;
369 <a name="l00348"></a>00348 }
370 <a name="l00349"></a>00349
371 <a name="l00350"></a>00350 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
372 <a name="l00351"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#7f9c3603bb3374d6936885010dbdd82b">00351</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#7f9c3603bb3374d6936885010dbdd82b">FixedTempoEstimator::D::getRemainingFeatures</a>()
373 <a name="l00352"></a>00352 {
374 <a name="l00353"></a>00353 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
375 <a name="l00354"></a>00354 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a>) <span class="keywordflow">return</span> fs;
376 <a name="l00355"></a>00355 <a class="code" href="classFixedTempoEstimator_1_1D.html#4f2cbc11fba5bc8af3fd2a0078156091">calculate</a>();
377 <a name="l00356"></a>00356 fs = <a class="code" href="classFixedTempoEstimator_1_1D.html#20389ba1515f6ce4181d3f41e5c4f347">assembleFeatures</a>();
378 <a name="l00357"></a>00357 ++<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>;
379 <a name="l00358"></a>00358 <span class="keywordflow">return</span> fs;
380 <a name="l00359"></a>00359 }
381 <a name="l00360"></a>00360
382 <a name="l00361"></a>00361 <span class="keywordtype">float</span>
383 <a name="l00362"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">00362</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">FixedTempoEstimator::D::lag2tempo</a>(<span class="keywordtype">int</span> lag)
384 <a name="l00363"></a>00363 {
385 <a name="l00364"></a>00364 <span class="keywordflow">return</span> 60.f / ((lag * <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>) / <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>);
386 <a name="l00365"></a>00365 }
387 <a name="l00366"></a>00366
388 <a name="l00367"></a>00367 <span class="keywordtype">int</span>
389 <a name="l00368"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#c6a75212293fc855de6ed0c6581a0fb9">00368</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#c6a75212293fc855de6ed0c6581a0fb9">FixedTempoEstimator::D::tempo2lag</a>(<span class="keywordtype">float</span> tempo)
390 <a name="l00369"></a>00369 {
391 <a name="l00370"></a>00370 <span class="keywordflow">return</span> ((60.f / tempo) * <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>) / <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>;
392 <a name="l00371"></a>00371 }
393 <a name="l00372"></a>00372
394 <a name="l00373"></a>00373 <span class="keywordtype">void</span>
395 <a name="l00374"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#4f2cbc11fba5bc8af3fd2a0078156091">00374</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#4f2cbc11fba5bc8af3fd2a0078156091">FixedTempoEstimator::D::calculate</a>()
396 <a name="l00375"></a>00375 {
397 <a name="l00376"></a>00376 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>) {
398 <a name="l00377"></a>00377 cerr &lt;&lt; <span class="stringliteral">"FixedTempoEstimator::calculate: calculation already happened?"</span> &lt;&lt; endl;
399 <a name="l00378"></a>00378 <span class="keywordflow">return</span>;
400 <a name="l00379"></a>00379 }
401 <a name="l00380"></a>00380
402 <a name="l00381"></a>00381 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> &lt; <a class="code" href="classFixedTempoEstimator_1_1D.html#e739e006f2d10ef2b13677770b23e663">m_dfsize</a> / 9 &amp;&amp;
403 <a name="l00382"></a>00382 <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a> &lt; (1.0 * <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>) / <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>) { <span class="comment">// 1 second</span>
404 <a name="l00383"></a>00383 cerr &lt;&lt; <span class="stringliteral">"FixedTempoEstimator::calculate: Input is too short"</span> &lt;&lt; endl;
405 <a name="l00384"></a>00384 <span class="keywordflow">return</span>;
406 <a name="l00385"></a>00385 }
407 <a name="l00386"></a>00386
408 <a name="l00387"></a>00387 <span class="comment">// This function takes m_df (the detection function array filled</span>
409 <a name="l00388"></a>00388 <span class="comment">// out in process()) and calculates m_r (the raw autocorrelation)</span>
410 <a name="l00389"></a>00389 <span class="comment">// and m_fr (the filtered autocorrelation from whose peaks tempo</span>
411 <a name="l00390"></a>00390 <span class="comment">// estimates will be taken).</span>
412 <a name="l00391"></a>00391
413 <a name="l00392"></a>00392 <span class="keywordtype">int</span> n = <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>; <span class="comment">// length of actual df array (m_dfsize is the theoretical max)</span>
414 <a name="l00393"></a>00393
415 <a name="l00394"></a>00394 <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// raw autocorrelation</span>
416 <a name="l00395"></a>00395 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// filtered autocorrelation</span>
417 <a name="l00396"></a>00396 <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[n/2]; <span class="comment">// averaged tempo estimate for each lag value</span>
418 <a name="l00397"></a>00397
419 <a name="l00398"></a>00398 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n/2; ++i) {
420 <a name="l00399"></a>00399 <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[i] = 0.f;
421 <a name="l00400"></a>00400 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] = 0.f;
422 <a name="l00401"></a>00401 <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[i] = <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(i);
423 <a name="l00402"></a>00402 }
424 <a name="l00403"></a>00403
425 <a name="l00404"></a>00404 <span class="comment">// Calculate the raw autocorrelation of the detection function</span>
426 <a name="l00405"></a>00405
427 <a name="l00406"></a>00406 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n/2; ++i) {
428 <a name="l00407"></a>00407
429 <a name="l00408"></a>00408 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = i; j &lt; n; ++j) {
430 <a name="l00409"></a>00409 <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[i] += <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[j] * <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[j - i];
431 <a name="l00410"></a>00410 }
432 <a name="l00411"></a>00411
433 <a name="l00412"></a>00412 <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[i] /= n - i - 1;
434 <a name="l00413"></a>00413 }
435 <a name="l00414"></a>00414
436 <a name="l00415"></a>00415 <span class="comment">// Filter the autocorrelation and average out the tempo estimates</span>
437 <a name="l00416"></a>00416
438 <a name="l00417"></a>00417 <span class="keywordtype">float</span> related[] = { 0.5, 2, 4, 8 };
439 <a name="l00418"></a>00418
440 <a name="l00419"></a>00419 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; n/2-1; ++i) {
441 <a name="l00420"></a>00420
442 <a name="l00421"></a>00421 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] = <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[i];
443 <a name="l00422"></a>00422
444 <a name="l00423"></a>00423 <span class="keywordtype">int</span> div = 1;
445 <a name="l00424"></a>00424
446 <a name="l00425"></a>00425 <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) {
447 <a name="l00426"></a>00426
448 <a name="l00427"></a>00427 <span class="comment">// Check for an obvious peak at each metrically related lag</span>
449 <a name="l00428"></a>00428
450 <a name="l00429"></a>00429 <span class="keywordtype">int</span> k0 = int(i * related[j] + 0.5);
451 <a name="l00430"></a>00430
452 <a name="l00431"></a>00431 <span class="keywordflow">if</span> (k0 &gt;= 0 &amp;&amp; k0 &lt; <span class="keywordtype">int</span>(n/2)) {
453 <a name="l00432"></a>00432
454 <a name="l00433"></a>00433 <span class="keywordtype">int</span> kmax = 0, kmin = 0;
455 <a name="l00434"></a>00434 <span class="keywordtype">float</span> kvmax = 0, kvmin = 0;
456 <a name="l00435"></a>00435 <span class="keywordtype">bool</span> have = <span class="keyword">false</span>;
457 <a name="l00436"></a>00436
458 <a name="l00437"></a>00437 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> k = k0 - 1; k &lt;= k0 + 1; ++k) {
459 <a name="l00438"></a>00438
460 <a name="l00439"></a>00439 <span class="keywordflow">if</span> (k &lt; 0 || k &gt;= n/2) <span class="keywordflow">continue</span>;
461 <a name="l00440"></a>00440
462 <a name="l00441"></a>00441 <span class="keywordflow">if</span> (!have || (<a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[k] &gt; kvmax)) { kmax = k; kvmax = <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[k]; }
463 <a name="l00442"></a>00442 <span class="keywordflow">if</span> (!have || (<a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[k] &lt; kvmin)) { kmin = k; kvmin = <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[k]; }
464 <a name="l00443"></a>00443
465 <a name="l00444"></a>00444 have = <span class="keyword">true</span>;
466 <a name="l00445"></a>00445 }
467 <a name="l00446"></a>00446
468 <a name="l00447"></a>00447 <span class="comment">// Boost the original lag according to the strongest</span>
469 <a name="l00448"></a>00448 <span class="comment">// value found close to this related lag</span>
470 <a name="l00449"></a>00449
471 <a name="l00450"></a>00450 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] += <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[kmax] / 5;
472 <a name="l00451"></a>00451
473 <a name="l00452"></a>00452 <span class="keywordflow">if</span> ((kmax == 0 || <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[kmax] &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[kmax-1]) &amp;&amp;
474 <a name="l00453"></a>00453 (kmax == n/2-1 || <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[kmax] &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[kmax+1]) &amp;&amp;
475 <a name="l00454"></a>00454 kvmax &gt; kvmin * 1.05) {
476 <a name="l00455"></a>00455
477 <a name="l00456"></a>00456 <span class="comment">// The strongest value close to the related lag is</span>
478 <a name="l00457"></a>00457 <span class="comment">// also a pretty good looking peak, so use it to</span>
479 <a name="l00458"></a>00458 <span class="comment">// improve our tempo estimate for the original lag</span>
480 <a name="l00459"></a>00459
481 <a name="l00460"></a>00460 <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[i] = <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[i] + <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(kmax) * related[j];
482 <a name="l00461"></a>00461 ++div;
483 <a name="l00462"></a>00462 }
484 <a name="l00463"></a>00463 }
485 <a name="l00464"></a>00464 }
486 <a name="l00465"></a>00465
487 <a name="l00466"></a>00466 <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[i] /= div;
488 <a name="l00467"></a>00467
489 <a name="l00468"></a>00468 <span class="comment">// Finally apply a primitive perceptual weighting (to prefer</span>
490 <a name="l00469"></a>00469 <span class="comment">// tempi of around 120-130)</span>
491 <a name="l00470"></a>00470
492 <a name="l00471"></a>00471 <span class="keywordtype">float</span> weight = 1.f - fabsf(128.f - <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(i)) * 0.005;
493 <a name="l00472"></a>00472 <span class="keywordflow">if</span> (weight &lt; 0.f) weight = 0.f;
494 <a name="l00473"></a>00473 weight = weight * weight * weight;
495 <a name="l00474"></a>00474
496 <a name="l00475"></a>00475 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] += <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] * (weight / 3);
497 <a name="l00476"></a>00476 }
498 <a name="l00477"></a>00477 }
499 <a name="l00478"></a>00478
500 <a name="l00479"></a>00479 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
501 <a name="l00480"></a><a class="code" href="classFixedTempoEstimator_1_1D.html#20389ba1515f6ce4181d3f41e5c4f347">00480</a> <a class="code" href="classFixedTempoEstimator_1_1D.html#20389ba1515f6ce4181d3f41e5c4f347">FixedTempoEstimator::D::assembleFeatures</a>()
502 <a name="l00481"></a>00481 {
503 <a name="l00482"></a>00482 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> fs;
504 <a name="l00483"></a>00483 <span class="keywordflow">if</span> (!<a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>) <span class="keywordflow">return</span> fs; <span class="comment">// No autocorrelation: no results</span>
505 <a name="l00484"></a>00484
506 <a name="l00485"></a>00485 <a class="code" href="structVamp_1_1Plugin_1_1Feature.html">Feature</a> feature;
507 <a name="l00486"></a>00486 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#98907091d0b6a589720ae35ae588a82b" title="True if an output feature has its own timestamp.">hasTimestamp</a> = <span class="keyword">true</span>;
508 <a name="l00487"></a>00487 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#33686757bd4481c72494122e9bfb9fba" title="True if an output feature has a specified duration.">hasDuration</a> = <span class="keyword">false</span>;
509 <a name="l00488"></a>00488 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">""</span>;
510 <a name="l00489"></a>00489 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear();
511 <a name="l00490"></a>00490 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(0.f);
512 <a name="l00491"></a>00491
513 <a name="l00492"></a>00492 <span class="keywordtype">char</span> buffer[40];
514 <a name="l00493"></a>00493
515 <a name="l00494"></a>00494 <span class="keywordtype">int</span> n = <a class="code" href="classFixedTempoEstimator_1_1D.html#b73af7f1943b76388de04cbb4696a983">m_n</a>;
516 <a name="l00495"></a>00495
517 <a name="l00496"></a>00496 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; n; ++i) {
518 <a name="l00497"></a>00497
519 <a name="l00498"></a>00498 <span class="comment">// Return the detection function in the DF output</span>
520 <a name="l00499"></a>00499
521 <a name="l00500"></a>00500 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#caa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a> +
522 <a name="l00501"></a>00501 RealTime::frame2RealTime(i * <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>, <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>);
523 <a name="l00502"></a>00502 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = <a class="code" href="classFixedTempoEstimator_1_1D.html#8e2312120e87ad9a48fedeebbaefa396">m_df</a>[i];
524 <a name="l00503"></a>00503 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">""</span>;
525 <a name="l00504"></a>00504 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#caa4524f29afce03c812a88ff31159c1">DFOutput</a>].push_back(feature);
526 <a name="l00505"></a>00505 }
527 <a name="l00506"></a>00506
528 <a name="l00507"></a>00507 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; n/2; ++i) {
529 <a name="l00508"></a>00508
530 <a name="l00509"></a>00509 <span class="comment">// Return the raw autocorrelation in the ACF output, each</span>
531 <a name="l00510"></a>00510 <span class="comment">// value labelled according to its corresponding tempo</span>
532 <a name="l00511"></a>00511
533 <a name="l00512"></a>00512 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#caa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a> +
534 <a name="l00513"></a>00513 RealTime::frame2RealTime(i * <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>, <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>);
535 <a name="l00514"></a>00514 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = <a class="code" href="classFixedTempoEstimator_1_1D.html#7a8c8658ecfeec98962078df89fcd538">m_r</a>[i];
536 <a name="l00515"></a>00515 sprintf(buffer, <span class="stringliteral">"%.1f bpm"</span>, <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(i));
537 <a name="l00516"></a>00516 <span class="keywordflow">if</span> (i == n/2-1) feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">""</span>;
538 <a name="l00517"></a>00517 <span class="keywordflow">else</span> feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
539 <a name="l00518"></a>00518 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#382c1fe740ac8911c6078cfbceffc870">ACFOutput</a>].push_back(feature);
540 <a name="l00519"></a>00519 }
541 <a name="l00520"></a>00520
542 <a name="l00521"></a>00521 <span class="keywordtype">float</span> t0 = <a class="code" href="classFixedTempoEstimator_1_1D.html#768fdbb62e4b21a39897963fdbd486ed">m_minbpm</a>; <span class="comment">// our minimum detected tempo</span>
543 <a name="l00522"></a>00522 <span class="keywordtype">float</span> t1 = <a class="code" href="classFixedTempoEstimator_1_1D.html#33e8d045b222addc6173b50df2553ba8">m_maxbpm</a>; <span class="comment">// our maximum detected tempo</span>
544 <a name="l00523"></a>00523
545 <a name="l00524"></a>00524 <span class="keywordtype">int</span> p0 = <a class="code" href="classFixedTempoEstimator_1_1D.html#c6a75212293fc855de6ed0c6581a0fb9">tempo2lag</a>(t1);
546 <a name="l00525"></a>00525 <span class="keywordtype">int</span> p1 = <a class="code" href="classFixedTempoEstimator_1_1D.html#c6a75212293fc855de6ed0c6581a0fb9">tempo2lag</a>(t0);
547 <a name="l00526"></a>00526
548 <a name="l00527"></a>00527 std::map&lt;float, int&gt; candidates;
549 <a name="l00528"></a>00528
550 <a name="l00529"></a>00529 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = p0; i &lt;= p1 &amp;&amp; i+1 &lt; n/2; ++i) {
551 <a name="l00530"></a>00530
552 <a name="l00531"></a>00531 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i-1] &amp;&amp;
553 <a name="l00532"></a>00532 <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i] &gt; <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i+1]) {
554 <a name="l00533"></a>00533
555 <a name="l00534"></a>00534 <span class="comment">// This is a peak in the filtered autocorrelation: stick</span>
556 <a name="l00535"></a>00535 <span class="comment">// it into the map from filtered autocorrelation to lag</span>
557 <a name="l00536"></a>00536 <span class="comment">// index -- this sorts our peaks by filtered acf value</span>
558 <a name="l00537"></a>00537
559 <a name="l00538"></a>00538 candidates[<a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i]] = i;
560 <a name="l00539"></a>00539 }
561 <a name="l00540"></a>00540
562 <a name="l00541"></a>00541 <span class="comment">// Also return the filtered autocorrelation in its own output</span>
563 <a name="l00542"></a>00542
564 <a name="l00543"></a>00543 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#caa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a> +
565 <a name="l00544"></a>00544 RealTime::frame2RealTime(i * <a class="code" href="classFixedTempoEstimator_1_1D.html#837da9722c63fe3c66c738255990c45f">m_stepSize</a>, <a class="code" href="classFixedTempoEstimator_1_1D.html#072a0fc30b3912a54858eefdd47f4d4f">m_inputSampleRate</a>);
566 <a name="l00545"></a>00545 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = <a class="code" href="classFixedTempoEstimator_1_1D.html#b255006072672653e645fc315eea6167">m_fr</a>[i];
567 <a name="l00546"></a>00546 sprintf(buffer, <span class="stringliteral">"%.1f bpm"</span>, <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(i));
568 <a name="l00547"></a>00547 <span class="keywordflow">if</span> (i == p1 || i == n/2-2) feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">""</span>;
569 <a name="l00548"></a>00548 <span class="keywordflow">else</span> feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
570 <a name="l00549"></a>00549 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#5b284021783d79785d46b043b458368d">FilteredACFOutput</a>].push_back(feature);
571 <a name="l00550"></a>00550 }
572 <a name="l00551"></a>00551
573 <a name="l00552"></a>00552 <span class="keywordflow">if</span> (candidates.empty()) {
574 <a name="l00553"></a>00553 cerr &lt;&lt; <span class="stringliteral">"No tempo candidates!"</span> &lt;&lt; endl;
575 <a name="l00554"></a>00554 <span class="keywordflow">return</span> fs;
576 <a name="l00555"></a>00555 }
577 <a name="l00556"></a>00556
578 <a name="l00557"></a>00557 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#98907091d0b6a589720ae35ae588a82b" title="True if an output feature has its own timestamp.">hasTimestamp</a> = <span class="keyword">true</span>;
579 <a name="l00558"></a>00558 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#caa605f36839c07e76f4882f5e22d8d7" title="Timestamp of the output feature.">timestamp</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a>;
580 <a name="l00559"></a>00559
581 <a name="l00560"></a>00560 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#33686757bd4481c72494122e9bfb9fba" title="True if an output feature has a specified duration.">hasDuration</a> = <span class="keyword">true</span>;
582 <a name="l00561"></a>00561 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#f687c0a7fe041757e922ec296862b115" title="Duration of the output feature.">duration</a> = <a class="code" href="classFixedTempoEstimator_1_1D.html#bacd5ff19c301020efb99c03136b849a">m_lasttime</a> - <a class="code" href="classFixedTempoEstimator_1_1D.html#3a3a0b4a4c259087f02d0046241674d0">m_start</a>;
583 <a name="l00562"></a>00562
584 <a name="l00563"></a>00563 <span class="comment">// The map contains only peaks and is sorted by filtered acf</span>
585 <a name="l00564"></a>00564 <span class="comment">// value, so the final element in it is our "best" tempo guess</span>
586 <a name="l00565"></a>00565
587 <a name="l00566"></a>00566 std::map&lt;float, int&gt;::const_iterator ci = candidates.end();
588 <a name="l00567"></a>00567 --ci;
589 <a name="l00568"></a>00568 <span class="keywordtype">int</span> maxpi = ci-&gt;second;
590 <a name="l00569"></a>00569
591 <a name="l00570"></a>00570 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[maxpi] &gt; 0) {
592 <a name="l00571"></a>00571
593 <a name="l00572"></a>00572 <span class="comment">// This lag has an adjusted tempo from the averaging process:</span>
594 <a name="l00573"></a>00573 <span class="comment">// use it</span>
595 <a name="l00574"></a>00574
596 <a name="l00575"></a>00575 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = <a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[maxpi];
597 <a name="l00576"></a>00576
598 <a name="l00577"></a>00577 } <span class="keywordflow">else</span> {
599 <a name="l00578"></a>00578
600 <a name="l00579"></a>00579 <span class="comment">// shouldn't happen -- it would imply that this high value was</span>
601 <a name="l00580"></a>00580 <span class="comment">// not a peak!</span>
602 <a name="l00581"></a>00581
603 <a name="l00582"></a>00582 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0] = <a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(maxpi);
604 <a name="l00583"></a>00583 cerr &lt;&lt; <span class="stringliteral">"WARNING: No stored tempo for index "</span> &lt;&lt; maxpi &lt;&lt; endl;
605 <a name="l00584"></a>00584 }
606 <a name="l00585"></a>00585
607 <a name="l00586"></a>00586 sprintf(buffer, <span class="stringliteral">"%.1f bpm"</span>, feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>[0]);
608 <a name="l00587"></a>00587 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = buffer;
609 <a name="l00588"></a>00588
610 <a name="l00589"></a>00589 <span class="comment">// Return the best tempo in the main output</span>
611 <a name="l00590"></a>00590
612 <a name="l00591"></a>00591 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#7a8511e62dffb5334ad3b70d57b2fcee">TempoOutput</a>].push_back(feature);
613 <a name="l00592"></a>00592
614 <a name="l00593"></a>00593 <span class="comment">// And return the other estimates (up to the arbitrarily chosen</span>
615 <a name="l00594"></a>00594 <span class="comment">// number of 10 of them) in the candidates output</span>
616 <a name="l00595"></a>00595
617 <a name="l00596"></a>00596 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear();
618 <a name="l00597"></a>00597 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#8eb1fb35f73b247ed13de9527c18f036" title="Label for the sample of this feature.">label</a> = <span class="stringliteral">""</span>;
619 <a name="l00598"></a>00598
620 <a name="l00599"></a>00599 <span class="keywordflow">while</span> (feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.size() &lt; 10) {
621 <a name="l00600"></a>00600 <span class="keywordflow">if</span> (<a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[ci-&gt;second] &gt; 0) {
622 <a name="l00601"></a>00601 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(<a class="code" href="classFixedTempoEstimator_1_1D.html#698446aad2c0f737732a392fb86a612c">m_t</a>[ci-&gt;second]);
623 <a name="l00602"></a>00602 } <span class="keywordflow">else</span> {
624 <a name="l00603"></a>00603 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.push_back(<a class="code" href="classFixedTempoEstimator_1_1D.html#0a7cb0705938097ab23a6f9187e6bae5">lag2tempo</a>(ci-&gt;second));
625 <a name="l00604"></a>00604 }
626 <a name="l00605"></a>00605 <span class="keywordflow">if</span> (ci == candidates.begin()) <span class="keywordflow">break</span>;
627 <a name="l00606"></a>00606 --ci;
628 <a name="l00607"></a>00607 }
629 <a name="l00608"></a>00608
630 <a name="l00609"></a>00609 fs[<a class="code" href="FixedTempoEstimator_8cpp.html#554b16c6b7516530e52c65318bfe08eb">CandidatesOutput</a>].push_back(feature);
631 <a name="l00610"></a>00610
632 <a name="l00611"></a>00611 <span class="keywordflow">return</span> fs;
633 <a name="l00612"></a>00612 }
634 <a name="l00613"></a>00613
635 <a name="l00614"></a>00614
636 <a name="l00615"></a>00615
637 <a name="l00616"></a><a class="code" href="classFixedTempoEstimator.html#3967c189f054f864639837c2519bd64d">00616</a> <a class="code" href="classFixedTempoEstimator.html#3967c189f054f864639837c2519bd64d">FixedTempoEstimator::FixedTempoEstimator</a>(<span class="keywordtype">float</span> inputSampleRate) :
638 <a name="l00617"></a>00617 <a class="code" href="classVamp_1_1Plugin.html#1b78c4f46c72ef345ed27f0b9bf20ac9">Plugin</a>(inputSampleRate),
639 <a name="l00618"></a>00618 <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>(new <a class="code" href="classFixedTempoEstimator_1_1D.html">D</a>(inputSampleRate))
640 <a name="l00619"></a>00619 {
641 <a name="l00620"></a>00620 }
642 <a name="l00621"></a>00621
643 <a name="l00622"></a><a class="code" href="classFixedTempoEstimator.html#0302c4bfdc163a3d34478cde93c96a53">00622</a> <a class="code" href="classFixedTempoEstimator.html#0302c4bfdc163a3d34478cde93c96a53">FixedTempoEstimator::~FixedTempoEstimator</a>()
644 <a name="l00623"></a>00623 {
645 <a name="l00624"></a>00624 <span class="keyword">delete</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>;
646 <a name="l00625"></a>00625 }
647 <a name="l00626"></a>00626
648 <a name="l00627"></a>00627 <span class="keywordtype">string</span>
649 <a name="l00628"></a><a class="code" href="classFixedTempoEstimator.html#b818edcf1555177d10260e197e3a5e7a">00628</a> <a class="code" href="classFixedTempoEstimator.html#b818edcf1555177d10260e197e3a5e7a" title="Get the computer-usable name of the plugin.">FixedTempoEstimator::getIdentifier</a>()<span class="keyword"> const</span>
650 <a name="l00629"></a>00629 <span class="keyword"></span>{
651 <a name="l00630"></a>00630 <span class="keywordflow">return</span> <span class="stringliteral">"fixedtempo"</span>;
652 <a name="l00631"></a>00631 }
653 <a name="l00632"></a>00632
654 <a name="l00633"></a>00633 <span class="keywordtype">string</span>
655 <a name="l00634"></a><a class="code" href="classFixedTempoEstimator.html#f9eb6fa8a98aa66b55e64e1795f9405f">00634</a> <a class="code" href="classFixedTempoEstimator.html#f9eb6fa8a98aa66b55e64e1795f9405f" title="Get a human-readable name or title of the plugin.">FixedTempoEstimator::getName</a>()<span class="keyword"> const</span>
656 <a name="l00635"></a>00635 <span class="keyword"></span>{
657 <a name="l00636"></a>00636 <span class="keywordflow">return</span> <span class="stringliteral">"Simple Fixed Tempo Estimator"</span>;
658 <a name="l00637"></a>00637 }
659 <a name="l00638"></a>00638
660 <a name="l00639"></a>00639 <span class="keywordtype">string</span>
661 <a name="l00640"></a><a class="code" href="classFixedTempoEstimator.html#06b00853f00c2e78d490697fcd7d1920">00640</a> <a class="code" href="classFixedTempoEstimator.html#06b00853f00c2e78d490697fcd7d1920" title="Get a human-readable description for the plugin, typically a line of text that may...">FixedTempoEstimator::getDescription</a>()<span class="keyword"> const</span>
662 <a name="l00641"></a>00641 <span class="keyword"></span>{
663 <a name="l00642"></a>00642 <span class="keywordflow">return</span> <span class="stringliteral">"Study a short section of audio and estimate its tempo, assuming the tempo is constant"</span>;
664 <a name="l00643"></a>00643 }
665 <a name="l00644"></a>00644
666 <a name="l00645"></a>00645 <span class="keywordtype">string</span>
667 <a name="l00646"></a><a class="code" href="classFixedTempoEstimator.html#e910d1b9250b11097fd6b51cd8285b68">00646</a> <a class="code" href="classFixedTempoEstimator.html#e910d1b9250b11097fd6b51cd8285b68" title="Get the name of the author or vendor of the plugin in human-readable form.">FixedTempoEstimator::getMaker</a>()<span class="keyword"> const</span>
668 <a name="l00647"></a>00647 <span class="keyword"></span>{
669 <a name="l00648"></a>00648 <span class="keywordflow">return</span> <span class="stringliteral">"Vamp SDK Example Plugins"</span>;
670 <a name="l00649"></a>00649 }
671 <a name="l00650"></a>00650
672 <a name="l00651"></a>00651 <span class="keywordtype">int</span>
673 <a name="l00652"></a><a class="code" href="classFixedTempoEstimator.html#d002fddb3735c2dd7e31e6a9def9949f">00652</a> <a class="code" href="classFixedTempoEstimator.html#d002fddb3735c2dd7e31e6a9def9949f" title="Get the version number of the plugin.">FixedTempoEstimator::getPluginVersion</a>()<span class="keyword"> const</span>
674 <a name="l00653"></a>00653 <span class="keyword"></span>{
675 <a name="l00654"></a>00654 <span class="keywordflow">return</span> 1;
676 <a name="l00655"></a>00655 }
677 <a name="l00656"></a>00656
678 <a name="l00657"></a>00657 <span class="keywordtype">string</span>
679 <a name="l00658"></a><a class="code" href="classFixedTempoEstimator.html#50c6b64530c84c0707ba3936c5022a48">00658</a> <a class="code" href="classFixedTempoEstimator.html#50c6b64530c84c0707ba3936c5022a48" title="Get the copyright statement or licensing summary for the plugin.">FixedTempoEstimator::getCopyright</a>()<span class="keyword"> const</span>
680 <a name="l00659"></a>00659 <span class="keyword"></span>{
681 <a name="l00660"></a>00660 <span class="keywordflow">return</span> <span class="stringliteral">"Code copyright 2008 Queen Mary, University of London. Freely redistributable (BSD license)"</span>;
682 <a name="l00661"></a>00661 }
683 <a name="l00662"></a>00662
684 <a name="l00663"></a>00663 <span class="keywordtype">size_t</span>
685 <a name="l00664"></a><a class="code" href="classFixedTempoEstimator.html#d450bb7e7df559ae3d68dfbfb085676f">00664</a> <a class="code" href="classFixedTempoEstimator.html#d450bb7e7df559ae3d68dfbfb085676f" title="Get the preferred step size (window increment -- the distance in sample frames between...">FixedTempoEstimator::getPreferredStepSize</a>()<span class="keyword"> const</span>
686 <a name="l00665"></a>00665 <span class="keyword"></span>{
687 <a name="l00666"></a>00666 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#dd749be18355ab1ae5c1ccbacfd2e192">getPreferredStepSize</a>();
688 <a name="l00667"></a>00667 }
689 <a name="l00668"></a>00668
690 <a name="l00669"></a>00669 <span class="keywordtype">size_t</span>
691 <a name="l00670"></a><a class="code" href="classFixedTempoEstimator.html#68b8569b71504a0478caf990dbe30683">00670</a> <a class="code" href="classFixedTempoEstimator.html#68b8569b71504a0478caf990dbe30683" title="Get the preferred block size (window size -- the number of sample frames passed in...">FixedTempoEstimator::getPreferredBlockSize</a>()<span class="keyword"> const</span>
692 <a name="l00671"></a>00671 <span class="keyword"></span>{
693 <a name="l00672"></a>00672 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#c02826f981736fc2aa5d835fa14e174d">getPreferredBlockSize</a>();
694 <a name="l00673"></a>00673 }
695 <a name="l00674"></a>00674
696 <a name="l00675"></a>00675 <span class="keywordtype">bool</span>
697 <a name="l00676"></a><a class="code" href="classFixedTempoEstimator.html#a7500a4ffbc4653baaf5101defdb37f5">00676</a> <a class="code" href="classFixedTempoEstimator.html#a7500a4ffbc4653baaf5101defdb37f5" title="Initialise a plugin to prepare it for use with the given number of input channels...">FixedTempoEstimator::initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize)
698 <a name="l00677"></a>00677 {
699 <a name="l00678"></a>00678 <span class="keywordflow">if</span> (channels &lt; <a class="code" href="classVamp_1_1Plugin.html#267b42e866df3cf0d190893e8096f525" title="Get the minimum supported number of input channels.">getMinChannelCount</a>() ||
700 <a name="l00679"></a>00679 channels &gt; <a class="code" href="classVamp_1_1Plugin.html#2c5ab12b6fa4847cb244bd1e9cb3ae5e" title="Get the maximum supported number of input channels.">getMaxChannelCount</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;
701 <a name="l00680"></a>00680
702 <a name="l00681"></a>00681 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#f0fcad4493650728babb7e341963c91d">initialise</a>(channels, stepSize, blockSize);
703 <a name="l00682"></a>00682 }
704 <a name="l00683"></a>00683
705 <a name="l00684"></a>00684 <span class="keywordtype">void</span>
706 <a name="l00685"></a><a class="code" href="classFixedTempoEstimator.html#c41708397255400c6682fee6c1b3d45f">00685</a> <a class="code" href="classFixedTempoEstimator.html#c41708397255400c6682fee6c1b3d45f" title="Reset the plugin after use, to prepare it for another clean run.">FixedTempoEstimator::reset</a>()
707 <a name="l00686"></a>00686 {
708 <a name="l00687"></a>00687 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#f5ac8147bfe79371d00aba8a19c2f8fd">reset</a>();
709 <a name="l00688"></a>00688 }
710 <a name="l00689"></a>00689
711 <a name="l00690"></a>00690 <a class="code" href="classVamp_1_1PluginBase.html#3b6bb4bbd86affe1ca9deceea1aad4f8">FixedTempoEstimator::ParameterList</a>
712 <a name="l00691"></a><a class="code" href="classFixedTempoEstimator.html#e157465a4e07d180bab05b5c3a4d8987">00691</a> <a class="code" href="classFixedTempoEstimator.html#e157465a4e07d180bab05b5c3a4d8987" title="Get the controllable parameters of this plugin.">FixedTempoEstimator::getParameterDescriptors</a>()<span class="keyword"> const</span>
713 <a name="l00692"></a>00692 <span class="keyword"></span>{
714 <a name="l00693"></a>00693 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#06fcf80a9a22c4b90abbc88eb592621a">getParameterDescriptors</a>();
715 <a name="l00694"></a>00694 }
716 <a name="l00695"></a>00695
717 <a name="l00696"></a>00696 <span class="keywordtype">float</span>
718 <a name="l00697"></a><a class="code" href="classFixedTempoEstimator.html#2030b05fb1228b30ace16200780c9152">00697</a> <a class="code" href="classFixedTempoEstimator.html#2030b05fb1228b30ace16200780c9152" title="Get the value of a named parameter.">FixedTempoEstimator::getParameter</a>(std::string <span class="keywordtype">id</span>)<span class="keyword"> const</span>
719 <a name="l00698"></a>00698 <span class="keyword"></span>{
720 <a name="l00699"></a>00699 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#968ef2e555c81e4a3bde89d19fafb31a">getParameter</a>(<span class="keywordtype">id</span>);
721 <a name="l00700"></a>00700 }
722 <a name="l00701"></a>00701
723 <a name="l00702"></a>00702 <span class="keywordtype">void</span>
724 <a name="l00703"></a><a class="code" href="classFixedTempoEstimator.html#8a5a413025384cf451c64d2c2ce13a75">00703</a> <a class="code" href="classFixedTempoEstimator.html#8a5a413025384cf451c64d2c2ce13a75" title="Set a named parameter.">FixedTempoEstimator::setParameter</a>(std::string <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value)
725 <a name="l00704"></a>00704 {
726 <a name="l00705"></a>00705 <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#6cafa64d4cc8aa3556bc0ce6b0c49bc4">setParameter</a>(<span class="keywordtype">id</span>, value);
727 <a name="l00706"></a>00706 }
728 <a name="l00707"></a>00707
729 <a name="l00708"></a>00708 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">FixedTempoEstimator::OutputList</a>
730 <a name="l00709"></a><a class="code" href="classFixedTempoEstimator.html#83121c205a723fe6297e2bf8870622a4">00709</a> <a class="code" href="classFixedTempoEstimator.html#83121c205a723fe6297e2bf8870622a4" title="Get the outputs of this plugin.">FixedTempoEstimator::getOutputDescriptors</a>()<span class="keyword"> const</span>
731 <a name="l00710"></a>00710 <span class="keyword"></span>{
732 <a name="l00711"></a>00711 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#7ce98af800f36045a0dae4b1dbed943f">getOutputDescriptors</a>();
733 <a name="l00712"></a>00712 }
734 <a name="l00713"></a>00713
735 <a name="l00714"></a>00714 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
736 <a name="l00715"></a><a class="code" href="classFixedTempoEstimator.html#1cf76b0e55cf4ed3da095cffcdeaec3c">00715</a> <a class="code" href="classFixedTempoEstimator.html#1cf76b0e55cf4ed3da095cffcdeaec3c" 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...">RealTime</a> ts)
737 <a name="l00716"></a>00716 {
738 <a name="l00717"></a>00717 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#7fac74fc9fc54f436408705d1e125e20">process</a>(inputBuffers, ts);
739 <a name="l00718"></a>00718 }
740 <a name="l00719"></a>00719
741 <a name="l00720"></a>00720 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FixedTempoEstimator::FeatureSet</a>
742 <a name="l00721"></a><a class="code" href="classFixedTempoEstimator.html#4965cf99be77fc4d1de51e11d83936b0">00721</a> <a class="code" href="classFixedTempoEstimator.html#4965cf99be77fc4d1de51e11d83936b0" title="After all blocks have been processed, calculate and return any remaining features...">FixedTempoEstimator::getRemainingFeatures</a>()
743 <a name="l00722"></a>00722 {
744 <a name="l00723"></a>00723 <span class="keywordflow">return</span> <a class="code" href="classFixedTempoEstimator.html#5e1c9abaf33e9f48eb7d3b48f8af3308">m_d</a>-&gt;<a class="code" href="classFixedTempoEstimator_1_1D.html#7f9c3603bb3374d6936885010dbdd82b">getRemainingFeatures</a>();
745 <a name="l00724"></a>00724 }
746 </pre></div></div>
747 <hr size="1"><address style="text-align: right;"><small>Generated on Mon Dec 8 14:37:18 2008 for VampPluginSDK by&nbsp;
748 <a href="http://www.doxygen.org/index.html">
749 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
750 </body>
751 </html>