Mercurial > hg > vamp-website

comparison code-doc/SpectralCentroid_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 351c4ebce5f9
children 0976232e353b
comparison
equal deleted inserted replaced
20:34e758355884 21:cc0be37dc9d3
2 <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> 2 <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
3 <title>VampPluginSDK: SpectralCentroid.cpp Source File</title> 3 <title>VampPluginSDK: SpectralCentroid.cpp Source File</title>
4 <link href="doxygen.css" rel="stylesheet" type="text/css"> 4 <link href="doxygen.css" rel="stylesheet" type="text/css">
5 <link href="tabs.css" rel="stylesheet" type="text/css"> 5 <link href="tabs.css" rel="stylesheet" type="text/css">
6 </head><body> 6 </head><body>
7 <!-- Generated by Doxygen 1.5.5 --> 7 <!-- Generated by Doxygen 1.5.6 -->
8 <div class="navigation" id="top"> 8 <div class="navigation" id="top">
9 <div class="tabs"> 9 <div class="tabs">
10 <ul> 10 <ul>
11 <li><a href="main.html"><span>Main&nbsp;Page</span></a></li> 11 <li><a href="main.html"><span>Main&nbsp;Page</span></a></li>
12 <li><a href="namespaces.html"><span>Namespaces</span></a></li> 12 <li><a href="namespaces.html"><span>Namespaces</span></a></li>
16 </ul> 16 </ul>
17 </div> 17 </div>
18 <div class="navpath"><a class="el" href="dir_35887283b966ca996e4ff77f459c38ce.html">examples</a> 18 <div class="navpath"><a class="el" href="dir_35887283b966ca996e4ff77f459c38ce.html">examples</a>
19 </div> 19 </div>
20 </div> 20 </div>
21 </div> 21 <div class="contents">
22 <h1>SpectralCentroid.cpp</h1><a href="SpectralCentroid_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> 22 <h1>SpectralCentroid.cpp</h1><a href="SpectralCentroid_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 23 <a name="l00002"></a>00002
24 <a name="l00003"></a>00003 <span class="comment">/*</span> 24 <a name="l00003"></a>00003 <span class="comment">/*</span>
25 <a name="l00004"></a>00004 <span class="comment"> Vamp</span> 25 <a name="l00004"></a>00004 <span class="comment"> Vamp</span>
26 <a name="l00005"></a>00005 <span class="comment"></span> 26 <a name="l00005"></a>00005 <span class="comment"></span>
60 <a name="l00039"></a>00039 <span class="keyword">using</span> std::string; 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; 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; 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; 63 <a name="l00042"></a>00042 <span class="keyword">using</span> std::endl;
64 <a name="l00043"></a>00043 64 <a name="l00043"></a>00043
65 <a name="l00044"></a>00044 <span class="preprocessor">#include &lt;cmath&gt;</span> 65 <a name="l00044"></a>00044 <span class="preprocessor">#include &lt;math.h&gt;</span>
66 <a name="l00045"></a>00045 66 <a name="l00045"></a>00045
67 <a name="l00046"></a>00046 67 <a name="l00046"></a>00046 <span class="preprocessor">#ifdef WIN32</span>
68 <a name="l00047"></a><a class="code" href="classSpectralCentroid.html#2cd801ad72f262eceb95ab0d22e7dbcd">00047</a> <a class="code" href="classSpectralCentroid.html#2cd801ad72f262eceb95ab0d22e7dbcd">SpectralCentroid::SpectralCentroid</a>(<span class="keywordtype">float</span> inputSampleRate) : 68 <a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#define isnan(x) false</span>
69 <a name="l00048"></a>00048 Plugin(inputSampleRate), 69 <a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#define isinf(x) false</span>
70 <a name="l00049"></a>00049 m_stepSize(0), 70 <a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
71 <a name="l00050"></a>00050 m_blockSize(0) 71 <a name="l00050"></a>00050 <span class="preprocessor"></span>
72 <a name="l00051"></a>00051 { 72 <a name="l00051"></a><a class="code" href="classSpectralCentroid.html#2cd801ad72f262eceb95ab0d22e7dbcd">00051</a> <a class="code" href="classSpectralCentroid.html#2cd801ad72f262eceb95ab0d22e7dbcd">SpectralCentroid::SpectralCentroid</a>(<span class="keywordtype">float</span> inputSampleRate) :
73 <a name="l00052"></a>00052 } 73 <a name="l00052"></a>00052 Plugin(inputSampleRate),
74 <a name="l00053"></a>00053 74 <a name="l00053"></a>00053 m_stepSize(0),
75 <a name="l00054"></a><a class="code" href="classSpectralCentroid.html#483e0d6757bc3dcf61e8066f764f45c6">00054</a> <a class="code" href="classSpectralCentroid.html#483e0d6757bc3dcf61e8066f764f45c6">SpectralCentroid::~SpectralCentroid</a>() 75 <a name="l00054"></a>00054 m_blockSize(0)
76 <a name="l00055"></a>00055 { 76 <a name="l00055"></a>00055 {
77 <a name="l00056"></a>00056 } 77 <a name="l00056"></a>00056 }
78 <a name="l00057"></a>00057 78 <a name="l00057"></a>00057
79 <a name="l00058"></a>00058 <span class="keywordtype">string</span> 79 <a name="l00058"></a><a class="code" href="classSpectralCentroid.html#483e0d6757bc3dcf61e8066f764f45c6">00058</a> <a class="code" href="classSpectralCentroid.html#483e0d6757bc3dcf61e8066f764f45c6">SpectralCentroid::~SpectralCentroid</a>()
80 <a name="l00059"></a><a class="code" href="classSpectralCentroid.html#1b2c4c8440c024c4c635fcef5697949f">00059</a> <a class="code" href="classSpectralCentroid.html#1b2c4c8440c024c4c635fcef5697949f" title="Get the computer-usable name of the plugin.">SpectralCentroid::getIdentifier</a>()<span class="keyword"> const</span> 80 <a name="l00059"></a>00059 {
81 <a name="l00060"></a>00060 <span class="keyword"></span>{ 81 <a name="l00060"></a>00060 }
82 <a name="l00061"></a>00061 <span class="keywordflow">return</span> <span class="stringliteral">"spectralcentroid"</span>; 82 <a name="l00061"></a>00061
83 <a name="l00062"></a>00062 } 83 <a name="l00062"></a>00062 <span class="keywordtype">string</span>
84 <a name="l00063"></a>00063 84 <a name="l00063"></a><a class="code" href="classSpectralCentroid.html#1b2c4c8440c024c4c635fcef5697949f">00063</a> <a class="code" href="classSpectralCentroid.html#1b2c4c8440c024c4c635fcef5697949f" title="Get the computer-usable name of the plugin.">SpectralCentroid::getIdentifier</a>()<span class="keyword"> const</span>
85 <a name="l00064"></a>00064 <span class="keywordtype">string</span> 85 <a name="l00064"></a>00064 <span class="keyword"></span>{
86 <a name="l00065"></a><a class="code" href="classSpectralCentroid.html#b7e6a620fea568af431be3cfd9dd5a41">00065</a> <a class="code" href="classSpectralCentroid.html#b7e6a620fea568af431be3cfd9dd5a41" title="Get a human-readable name or title of the plugin.">SpectralCentroid::getName</a>()<span class="keyword"> const</span> 86 <a name="l00065"></a>00065 <span class="keywordflow">return</span> <span class="stringliteral">"spectralcentroid"</span>;
87 <a name="l00066"></a>00066 <span class="keyword"></span>{ 87 <a name="l00066"></a>00066 }
88 <a name="l00067"></a>00067 <span class="keywordflow">return</span> <span class="stringliteral">"Spectral Centroid"</span>; 88 <a name="l00067"></a>00067
89 <a name="l00068"></a>00068 } 89 <a name="l00068"></a>00068 <span class="keywordtype">string</span>
90 <a name="l00069"></a>00069 90 <a name="l00069"></a><a class="code" href="classSpectralCentroid.html#b7e6a620fea568af431be3cfd9dd5a41">00069</a> <a class="code" href="classSpectralCentroid.html#b7e6a620fea568af431be3cfd9dd5a41" title="Get a human-readable name or title of the plugin.">SpectralCentroid::getName</a>()<span class="keyword"> const</span>
91 <a name="l00070"></a>00070 <span class="keywordtype">string</span> 91 <a name="l00070"></a>00070 <span class="keyword"></span>{
92 <a name="l00071"></a><a class="code" href="classSpectralCentroid.html#8fbb74a46283057d9a0b0e4718ee943c">00071</a> <a class="code" href="classSpectralCentroid.html#8fbb74a46283057d9a0b0e4718ee943c" title="Get a human-readable description for the plugin, typically a line of text that may...">SpectralCentroid::getDescription</a>()<span class="keyword"> const</span> 92 <a name="l00071"></a>00071 <span class="keywordflow">return</span> <span class="stringliteral">"Spectral Centroid"</span>;
93 <a name="l00072"></a>00072 <span class="keyword"></span>{ 93 <a name="l00072"></a>00072 }
94 <a name="l00073"></a>00073 <span class="keywordflow">return</span> <span class="stringliteral">"Calculate the centroid frequency of the spectrum of the input signal"</span>; 94 <a name="l00073"></a>00073
95 <a name="l00074"></a>00074 } 95 <a name="l00074"></a>00074 <span class="keywordtype">string</span>
96 <a name="l00075"></a>00075 96 <a name="l00075"></a><a class="code" href="classSpectralCentroid.html#8fbb74a46283057d9a0b0e4718ee943c">00075</a> <a class="code" href="classSpectralCentroid.html#8fbb74a46283057d9a0b0e4718ee943c" title="Get a human-readable description for the plugin, typically a line of text that may...">SpectralCentroid::getDescription</a>()<span class="keyword"> const</span>
97 <a name="l00076"></a>00076 <span class="keywordtype">string</span> 97 <a name="l00076"></a>00076 <span class="keyword"></span>{
98 <a name="l00077"></a><a class="code" href="classSpectralCentroid.html#c01ff858bf67e2e93ad5d24a6ba8c8c8">00077</a> <a class="code" href="classSpectralCentroid.html#c01ff858bf67e2e93ad5d24a6ba8c8c8" title="Get the name of the author or vendor of the plugin in human-readable form.">SpectralCentroid::getMaker</a>()<span class="keyword"> const</span> 98 <a name="l00077"></a>00077 <span class="keywordflow">return</span> <span class="stringliteral">"Calculate the centroid frequency of the spectrum of the input signal"</span>;
99 <a name="l00078"></a>00078 <span class="keyword"></span>{ 99 <a name="l00078"></a>00078 }
100 <a name="l00079"></a>00079 <span class="keywordflow">return</span> <span class="stringliteral">"Vamp SDK Example Plugins"</span>; 100 <a name="l00079"></a>00079
101 <a name="l00080"></a>00080 } 101 <a name="l00080"></a>00080 <span class="keywordtype">string</span>
102 <a name="l00081"></a>00081 102 <a name="l00081"></a><a class="code" href="classSpectralCentroid.html#c01ff858bf67e2e93ad5d24a6ba8c8c8">00081</a> <a class="code" href="classSpectralCentroid.html#c01ff858bf67e2e93ad5d24a6ba8c8c8" title="Get the name of the author or vendor of the plugin in human-readable form.">SpectralCentroid::getMaker</a>()<span class="keyword"> const</span>
103 <a name="l00082"></a>00082 <span class="keywordtype">int</span> 103 <a name="l00082"></a>00082 <span class="keyword"></span>{
104 <a name="l00083"></a><a class="code" href="classSpectralCentroid.html#f64622e66bf678ac2b0b58aa832ca2b3">00083</a> <a class="code" href="classSpectralCentroid.html#f64622e66bf678ac2b0b58aa832ca2b3" title="Get the version number of the plugin.">SpectralCentroid::getPluginVersion</a>()<span class="keyword"> const</span> 104 <a name="l00083"></a>00083 <span class="keywordflow">return</span> <span class="stringliteral">"Vamp SDK Example Plugins"</span>;
105 <a name="l00084"></a>00084 <span class="keyword"></span>{ 105 <a name="l00084"></a>00084 }
106 <a name="l00085"></a>00085 <span class="keywordflow">return</span> 2; 106 <a name="l00085"></a>00085
107 <a name="l00086"></a>00086 } 107 <a name="l00086"></a>00086 <span class="keywordtype">int</span>
108 <a name="l00087"></a>00087 108 <a name="l00087"></a><a class="code" href="classSpectralCentroid.html#f64622e66bf678ac2b0b58aa832ca2b3">00087</a> <a class="code" href="classSpectralCentroid.html#f64622e66bf678ac2b0b58aa832ca2b3" title="Get the version number of the plugin.">SpectralCentroid::getPluginVersion</a>()<span class="keyword"> const</span>
109 <a name="l00088"></a>00088 <span class="keywordtype">string</span> 109 <a name="l00088"></a>00088 <span class="keyword"></span>{
110 <a name="l00089"></a><a class="code" href="classSpectralCentroid.html#925747d513d598e0fa21ed0ed6520980">00089</a> <a class="code" href="classSpectralCentroid.html#925747d513d598e0fa21ed0ed6520980" title="Get the copyright statement or licensing summary for the plugin.">SpectralCentroid::getCopyright</a>()<span class="keyword"> const</span> 110 <a name="l00089"></a>00089 <span class="keywordflow">return</span> 2;
111 <a name="l00090"></a>00090 <span class="keyword"></span>{ 111 <a name="l00090"></a>00090 }
112 <a name="l00091"></a>00091 <span class="keywordflow">return</span> <span class="stringliteral">"Freely redistributable (BSD license)"</span>; 112 <a name="l00091"></a>00091
113 <a name="l00092"></a>00092 } 113 <a name="l00092"></a>00092 <span class="keywordtype">string</span>
114 <a name="l00093"></a>00093 114 <a name="l00093"></a><a class="code" href="classSpectralCentroid.html#925747d513d598e0fa21ed0ed6520980">00093</a> <a class="code" href="classSpectralCentroid.html#925747d513d598e0fa21ed0ed6520980" title="Get the copyright statement or licensing summary for the plugin.">SpectralCentroid::getCopyright</a>()<span class="keyword"> const</span>
115 <a name="l00094"></a>00094 <span class="keywordtype">bool</span> 115 <a name="l00094"></a>00094 <span class="keyword"></span>{
116 <a name="l00095"></a><a class="code" href="classSpectralCentroid.html#ab1ae16f5c68e2b319668f447908cedb">00095</a> <a class="code" href="classSpectralCentroid.html#ab1ae16f5c68e2b319668f447908cedb" title="Initialise a plugin to prepare it for use with the given number of input channels...">SpectralCentroid::initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize) 116 <a name="l00095"></a>00095 <span class="keywordflow">return</span> <span class="stringliteral">"Freely redistributable (BSD license)"</span>;
117 <a name="l00096"></a>00096 { 117 <a name="l00096"></a>00096 }
118 <a name="l00097"></a>00097 <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>() || 118 <a name="l00097"></a>00097
119 <a name="l00098"></a>00098 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>; 119 <a name="l00098"></a>00098 <span class="keywordtype">bool</span>
120 <a name="l00099"></a>00099 120 <a name="l00099"></a><a class="code" href="classSpectralCentroid.html#ab1ae16f5c68e2b319668f447908cedb">00099</a> <a class="code" href="classSpectralCentroid.html#ab1ae16f5c68e2b319668f447908cedb" title="Initialise a plugin to prepare it for use with the given number of input channels...">SpectralCentroid::initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize)
121 <a name="l00100"></a>00100 <a class="code" href="classSpectralCentroid.html#49805a090ba58477da4adbefea4392a7">m_stepSize</a> = stepSize; 121 <a name="l00100"></a>00100 {
122 <a name="l00101"></a>00101 <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a> = blockSize; 122 <a name="l00101"></a>00101 <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>() ||
123 <a name="l00102"></a>00102 123 <a name="l00102"></a>00102 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>;
124 <a name="l00103"></a>00103 <span class="keywordflow">return</span> <span class="keyword">true</span>; 124 <a name="l00103"></a>00103
125 <a name="l00104"></a>00104 } 125 <a name="l00104"></a>00104 <a class="code" href="classSpectralCentroid.html#49805a090ba58477da4adbefea4392a7">m_stepSize</a> = stepSize;
126 <a name="l00105"></a>00105 126 <a name="l00105"></a>00105 <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a> = blockSize;
127 <a name="l00106"></a>00106 <span class="keywordtype">void</span> 127 <a name="l00106"></a>00106
128 <a name="l00107"></a><a class="code" href="classSpectralCentroid.html#9b5f5581691ff8f46bb7674d8d74395c">00107</a> <a class="code" href="classSpectralCentroid.html#9b5f5581691ff8f46bb7674d8d74395c" title="Reset the plugin after use, to prepare it for another clean run.">SpectralCentroid::reset</a>() 128 <a name="l00107"></a>00107 <span class="keywordflow">return</span> <span class="keyword">true</span>;
129 <a name="l00108"></a>00108 { 129 <a name="l00108"></a>00108 }
130 <a name="l00109"></a>00109 } 130 <a name="l00109"></a>00109
131 <a name="l00110"></a>00110 131 <a name="l00110"></a>00110 <span class="keywordtype">void</span>
132 <a name="l00111"></a>00111 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">SpectralCentroid::OutputList</a> 132 <a name="l00111"></a><a class="code" href="classSpectralCentroid.html#9b5f5581691ff8f46bb7674d8d74395c">00111</a> <a class="code" href="classSpectralCentroid.html#9b5f5581691ff8f46bb7674d8d74395c" title="Reset the plugin after use, to prepare it for another clean run.">SpectralCentroid::reset</a>()
133 <a name="l00112"></a><a class="code" href="classSpectralCentroid.html#894ca9740927102bb80b56b5e9e95877">00112</a> <a class="code" href="classSpectralCentroid.html#894ca9740927102bb80b56b5e9e95877" title="Get the outputs of this plugin.">SpectralCentroid::getOutputDescriptors</a>()<span class="keyword"> const</span> 133 <a name="l00112"></a>00112 {
134 <a name="l00113"></a>00113 <span class="keyword"></span>{ 134 <a name="l00113"></a>00113 }
135 <a name="l00114"></a>00114 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> list; 135 <a name="l00114"></a>00114
136 <a name="l00115"></a>00115 136 <a name="l00115"></a>00115 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">SpectralCentroid::OutputList</a>
137 <a name="l00116"></a>00116 <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html">OutputDescriptor</a> d; 137 <a name="l00116"></a><a class="code" href="classSpectralCentroid.html#894ca9740927102bb80b56b5e9e95877">00116</a> <a class="code" href="classSpectralCentroid.html#894ca9740927102bb80b56b5e9e95877" title="Get the outputs of this plugin.">SpectralCentroid::getOutputDescriptors</a>()<span class="keyword"> const</span>
138 <a name="l00117"></a>00117 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">"logcentroid"</span>; 138 <a name="l00117"></a>00117 <span class="keyword"></span>{
139 <a name="l00118"></a>00118 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">"Log Frequency Centroid"</span>; 139 <a name="l00118"></a>00118 <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> list;
140 <a name="l00119"></a>00119 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">"Centroid of the log weighted frequency spectrum"</span>; 140 <a name="l00119"></a>00119
141 <a name="l00120"></a>00120 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">"Hz"</span>; 141 <a name="l00120"></a>00120 <a class="code" href="structVamp_1_1Plugin_1_1OutputDescriptor.html">OutputDescriptor</a> d;
142 <a name="l00121"></a>00121 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>; 142 <a name="l00121"></a>00121 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">"logcentroid"</span>;
143 <a name="l00122"></a>00122 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; 143 <a name="l00122"></a>00122 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">"Log Frequency Centroid"</span>;
144 <a name="l00123"></a>00123 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>; 144 <a name="l00123"></a>00123 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">"Centroid of the log weighted frequency spectrum"</span>;
145 <a name="l00124"></a>00124 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>; 145 <a name="l00124"></a>00124 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">"Hz"</span>;
146 <a name="l00125"></a>00125 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#bffa9ed50cd756df70fd51f0355f448c0459d5d0d2198d21e8bc90abe4fdccca" title="Results from each process() align with that call&amp;#39;s block start.">OutputDescriptor::OneSamplePerStep</a>; 146 <a name="l00125"></a>00125 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>;
147 <a name="l00126"></a>00126 list.push_back(d); 147 <a name="l00126"></a>00126 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;
148 <a name="l00127"></a>00127 148 <a name="l00127"></a>00127 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>;
149 <a name="l00128"></a>00128 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">"linearcentroid"</span>; 149 <a name="l00128"></a>00128 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>;
150 <a name="l00129"></a>00129 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">"Linear Frequency Centroid"</span>; 150 <a name="l00129"></a>00129 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#bffa9ed50cd756df70fd51f0355f448c0459d5d0d2198d21e8bc90abe4fdccca" title="Results from each process() align with that call&amp;#39;s block start.">OutputDescriptor::OneSamplePerStep</a>;
151 <a name="l00130"></a>00130 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">"Centroid of the linear frequency spectrum"</span>; 151 <a name="l00130"></a>00130 list.push_back(d);
152 <a name="l00131"></a>00131 list.push_back(d); 152 <a name="l00131"></a>00131
153 <a name="l00132"></a>00132 153 <a name="l00132"></a>00132 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">"linearcentroid"</span>;
154 <a name="l00133"></a>00133 <span class="keywordflow">return</span> list; 154 <a name="l00133"></a>00133 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">"Linear Frequency Centroid"</span>;
155 <a name="l00134"></a>00134 } 155 <a name="l00134"></a>00134 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">"Centroid of the linear frequency spectrum"</span>;
156 <a name="l00135"></a>00135 156 <a name="l00135"></a>00135 list.push_back(d);
157 <a name="l00136"></a>00136 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">SpectralCentroid::FeatureSet</a> 157 <a name="l00136"></a>00136
158 <a name="l00137"></a><a class="code" href="classSpectralCentroid.html#ca96c70e7e75c9e4a7db38485018914c">00137</a> <a class="code" href="classSpectralCentroid.html#ca96c70e7e75c9e4a7db38485018914c" title="Process a single block of input data.">SpectralCentroid::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...">Vamp::RealTime</a>) 158 <a name="l00137"></a>00137 <span class="keywordflow">return</span> list;
159 <a name="l00138"></a>00138 { 159 <a name="l00138"></a>00138 }
160 <a name="l00139"></a>00139 <span class="keywordflow">if</span> (<a class="code" href="classSpectralCentroid.html#49805a090ba58477da4adbefea4392a7">m_stepSize</a> == 0) { 160 <a name="l00139"></a>00139
161 <a name="l00140"></a>00140 cerr &lt;&lt; <span class="stringliteral">"ERROR: SpectralCentroid::process: "</span> 161 <a name="l00140"></a>00140 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">SpectralCentroid::FeatureSet</a>
162 <a name="l00141"></a>00141 &lt;&lt; <span class="stringliteral">"SpectralCentroid has not been initialised"</span> 162 <a name="l00141"></a><a class="code" href="classSpectralCentroid.html#ca96c70e7e75c9e4a7db38485018914c">00141</a> <a class="code" href="classSpectralCentroid.html#ca96c70e7e75c9e4a7db38485018914c" title="Process a single block of input data.">SpectralCentroid::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...">Vamp::RealTime</a> timestamp)
163 <a name="l00142"></a>00142 &lt;&lt; endl; 163 <a name="l00142"></a>00142 {
164 <a name="l00143"></a>00143 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>(); 164 <a name="l00143"></a>00143 <span class="keywordflow">if</span> (<a class="code" href="classSpectralCentroid.html#49805a090ba58477da4adbefea4392a7">m_stepSize</a> == 0) {
165 <a name="l00144"></a>00144 } 165 <a name="l00144"></a>00144 cerr &lt;&lt; <span class="stringliteral">"ERROR: SpectralCentroid::process: "</span>
166 <a name="l00145"></a>00145 166 <a name="l00145"></a>00145 &lt;&lt; <span class="stringliteral">"SpectralCentroid has not been initialised"</span>
167 <a name="l00146"></a>00146 <span class="keywordtype">double</span> numLin = 0.0, numLog = 0.0, denom = 0.0; 167 <a name="l00146"></a>00146 &lt;&lt; endl;
168 <a name="l00147"></a>00147 168 <a name="l00147"></a>00147 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>();
169 <a name="l00148"></a>00148 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 1; i &lt;= <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>/2; ++i) { 169 <a name="l00148"></a>00148 }
170 <a name="l00149"></a>00149 <span class="keywordtype">double</span> freq = (double(i) * <a class="code" href="classVamp_1_1Plugin.html#59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>) / <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>; 170 <a name="l00149"></a>00149
171 <a name="l00150"></a>00150 <span class="keywordtype">double</span> real = inputBuffers[0][i*2]; 171 <a name="l00150"></a>00150 <span class="keywordtype">double</span> numLin = 0.0, numLog = 0.0, denom = 0.0;
172 <a name="l00151"></a>00151 <span class="keywordtype">double</span> imag = inputBuffers[0][i*2 + 1]; 172 <a name="l00151"></a>00151
173 <a name="l00152"></a>00152 <span class="keywordtype">double</span> power = sqrt(real * real + imag * imag) / (<a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>/2); 173 <a name="l00152"></a>00152 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 1; i &lt;= <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>/2; ++i) {
174 <a name="l00153"></a>00153 numLin += freq * power; 174 <a name="l00153"></a>00153 <span class="keywordtype">double</span> freq = (double(i) * <a class="code" href="classVamp_1_1Plugin.html#59b9dd82a4f4eb946cd0474cc81abc23">m_inputSampleRate</a>) / <a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>;
175 <a name="l00154"></a>00154 numLog += log10f(freq) * power; 175 <a name="l00154"></a>00154 <span class="keywordtype">double</span> real = inputBuffers[0][i*2];
176 <a name="l00155"></a>00155 denom += power; 176 <a name="l00155"></a>00155 <span class="keywordtype">double</span> imag = inputBuffers[0][i*2 + 1];
177 <a name="l00156"></a>00156 } 177 <a name="l00156"></a>00156 <span class="keywordtype">double</span> scalemag = sqrt(real * real + imag * imag) / (<a class="code" href="classSpectralCentroid.html#262f583d71b442bb2d80023e7c85aa4e">m_blockSize</a>/2);
178 <a name="l00157"></a>00157 178 <a name="l00157"></a>00157 numLin += freq * scalemag;
179 <a name="l00158"></a>00158 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> returnFeatures; 179 <a name="l00158"></a>00158 numLog += log10f(freq) * scalemag;
180 <a name="l00159"></a>00159 180 <a name="l00159"></a>00159 denom += scalemag;
181 <a name="l00160"></a>00160 <span class="comment">// std::cerr &lt;&lt; "power " &lt;&lt; denom &lt;&lt; ", block size " &lt;&lt; m_blockSize &lt;&lt; std::endl;</span> 181 <a name="l00160"></a>00160 }
182 <a name="l00161"></a>00161 182 <a name="l00161"></a>00161
183 <a name="l00162"></a>00162 <span class="keywordflow">if</span> (denom != 0.0) { 183 <a name="l00162"></a>00162 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> returnFeatures;
184 <a name="l00163"></a>00163 <span class="keywordtype">float</span> centroidLin = float(numLin / denom); 184 <a name="l00163"></a>00163
185 <a name="l00164"></a>00164 <span class="keywordtype">float</span> centroidLog = powf(10, <span class="keywordtype">float</span>(numLog / denom)); 185 <a name="l00164"></a>00164 <span class="keywordflow">if</span> (denom != 0.0) {
186 <a name="l00165"></a>00165 186 <a name="l00165"></a>00165 <span class="keywordtype">float</span> centroidLin = float(numLin / denom);
187 <a name="l00166"></a>00166 <a class="code" href="structVamp_1_1Plugin_1_1Feature.html">Feature</a> feature; 187 <a name="l00166"></a>00166 <span class="keywordtype">float</span> centroidLog = powf(10, <span class="keywordtype">float</span>(numLog / denom));
188 <a name="l00167"></a>00167 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">false</span>; 188 <a name="l00167"></a>00167
189 <a name="l00168"></a>00168 <span class="keywordflow">if</span> (!std::isnan(centroidLog) &amp;&amp; !std::isinf(centroidLog)) { 189 <a name="l00168"></a>00168 <a class="code" href="structVamp_1_1Plugin_1_1Feature.html">Feature</a> feature;
190 <a name="l00169"></a>00169 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(centroidLog); 190 <a name="l00169"></a>00169 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">false</span>;
191 <a name="l00170"></a>00170 } 191 <a name="l00170"></a>00170
192 <a name="l00171"></a>00171 returnFeatures[0].push_back(feature); 192 <a name="l00171"></a>00171 <span class="keywordflow">if</span> (!isnan(centroidLog) &amp;&amp; !isinf(centroidLog)) {
193 <a name="l00172"></a>00172 193 <a name="l00172"></a>00172 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(centroidLog);
194 <a name="l00173"></a>00173 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear(); 194 <a name="l00173"></a>00173 }
195 <a name="l00174"></a>00174 <span class="keywordflow">if</span> (!std::isnan(centroidLin) &amp;&amp; !std::isinf(centroidLin)) { 195 <a name="l00174"></a>00174 returnFeatures[0].push_back(feature);
196 <a name="l00175"></a>00175 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(centroidLin); 196 <a name="l00175"></a>00175
197 <a name="l00176"></a>00176 } 197 <a name="l00176"></a>00176 feature.<a class="code" href="structVamp_1_1Plugin_1_1Feature.html#60b9f3057386820dbcaec0eb1189ce71" title="Results for a single sample of this feature.">values</a>.clear();
198 <a name="l00177"></a>00177 returnFeatures[1].push_back(feature); 198 <a name="l00177"></a>00177 <span class="keywordflow">if</span> (!isnan(centroidLin) &amp;&amp; !isinf(centroidLin)) {
199 <a name="l00178"></a>00178 } 199 <a name="l00178"></a>00178 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(centroidLin);
200 <a name="l00179"></a>00179 200 <a name="l00179"></a>00179 }
201 <a name="l00180"></a>00180 <span class="keywordflow">return</span> returnFeatures; 201 <a name="l00180"></a>00180 returnFeatures[1].push_back(feature);
202 <a name="l00181"></a>00181 } 202 <a name="l00181"></a>00181 }
203 <a name="l00182"></a>00182 203 <a name="l00182"></a>00182
204 <a name="l00183"></a>00183 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">SpectralCentroid::FeatureSet</a> 204 <a name="l00183"></a>00183 <span class="keywordflow">return</span> returnFeatures;
205 <a name="l00184"></a><a class="code" href="classSpectralCentroid.html#83ba39f0870a2f86837605a958dfab1a">00184</a> <a class="code" href="classSpectralCentroid.html#83ba39f0870a2f86837605a958dfab1a" title="After all blocks have been processed, calculate and return any remaining features...">SpectralCentroid::getRemainingFeatures</a>() 205 <a name="l00184"></a>00184 }
206 <a name="l00185"></a>00185 { 206 <a name="l00185"></a>00185
207 <a name="l00186"></a>00186 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>(); 207 <a name="l00186"></a>00186 <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">SpectralCentroid::FeatureSet</a>
208 <a name="l00187"></a>00187 } 208 <a name="l00187"></a><a class="code" href="classSpectralCentroid.html#83ba39f0870a2f86837605a958dfab1a">00187</a> <a class="code" href="classSpectralCentroid.html#83ba39f0870a2f86837605a958dfab1a" title="After all blocks have been processed, calculate and return any remaining features...">SpectralCentroid::getRemainingFeatures</a>()
209 <a name="l00188"></a>00188 209 <a name="l00188"></a>00188 {
210 <a name="l00189"></a>00189 <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a>();
211 <a name="l00190"></a>00190 }
212 <a name="l00191"></a>00191
210 </pre></div></div> 213 </pre></div></div>
211 <hr size="1"><address style="text-align: right;"><small>Generated on Wed Jul 9 11:36:07 2008 for VampPluginSDK by&nbsp; 214 <hr size="1"><address style="text-align: right;"><small>Generated on Mon Dec 8 14:37:18 2008 for VampPluginSDK by&nbsp;
212 <a href="http://www.doxygen.org/index.html"> 215 <a href="http://www.doxygen.org/index.html">
213 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.5 </small></address> 216 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
214 </body> 217 </body>
215 </html> 218 </html>