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author Chris Cannam
date Sun, 07 Jul 2013 11:25:48 +0200
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   &#160;<span id="projectnumber">2.1</span>
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<a href="PercussionOnsetDetector_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */</span>
<a name="l00002"></a>00002 
<a name="l00003"></a>00003 <span class="comment">/*</span>
<a name="l00004"></a>00004 <span class="comment">    Vamp</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">    An API for audio analysis and feature extraction plugins.</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment">    Centre for Digital Music, Queen Mary, University of London.</span>
<a name="l00009"></a>00009 <span class="comment">    Copyright 2006 Chris Cannam.</span>
<a name="l00010"></a>00010 <span class="comment">  </span>
<a name="l00011"></a>00011 <span class="comment">    Permission is hereby granted, free of charge, to any person</span>
<a name="l00012"></a>00012 <span class="comment">    obtaining a copy of this software and associated documentation</span>
<a name="l00013"></a>00013 <span class="comment">    files (the &quot;Software&quot;), to deal in the Software without</span>
<a name="l00014"></a>00014 <span class="comment">    restriction, including without limitation the rights to use, copy,</span>
<a name="l00015"></a>00015 <span class="comment">    modify, merge, publish, distribute, sublicense, and/or sell copies</span>
<a name="l00016"></a>00016 <span class="comment">    of the Software, and to permit persons to whom the Software is</span>
<a name="l00017"></a>00017 <span class="comment">    furnished to do so, subject to the following conditions:</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">    The above copyright notice and this permission notice shall be</span>
<a name="l00020"></a>00020 <span class="comment">    included in all copies or substantial portions of the Software.</span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment">    THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND,</span>
<a name="l00023"></a>00023 <span class="comment">    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
<a name="l00024"></a>00024 <span class="comment">    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span>
<a name="l00025"></a>00025 <span class="comment">    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR</span>
<a name="l00026"></a>00026 <span class="comment">    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF</span>
<a name="l00027"></a>00027 <span class="comment">    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span>
<a name="l00028"></a>00028 <span class="comment">    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
<a name="l00029"></a>00029 <span class="comment"></span>
<a name="l00030"></a>00030 <span class="comment">    Except as contained in this notice, the names of the Centre for</span>
<a name="l00031"></a>00031 <span class="comment">    Digital Music; Queen Mary, University of London; and Chris Cannam</span>
<a name="l00032"></a>00032 <span class="comment">    shall not be used in advertising or otherwise to promote the sale,</span>
<a name="l00033"></a>00033 <span class="comment">    use or other dealings in this Software without prior written</span>
<a name="l00034"></a>00034 <span class="comment">    authorization.</span>
<a name="l00035"></a>00035 <span class="comment">*/</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef _PERCUSSION_ONSET_DETECTOR_PLUGIN_H_</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define _PERCUSSION_ONSET_DETECTOR_PLUGIN_H_</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include &quot;<a class="code" href="vamp-sdk_2Plugin_8h.html">vamp-sdk/Plugin.h</a>&quot;</span>
<a name="l00041"></a>00041 
<a name="l00046"></a><a class="code" href="classPercussionOnsetDetector.html">00046</a> <span class="keyword">class </span><a class="code" href="classPercussionOnsetDetector.html" title="Example plugin that detects percussive events.">PercussionOnsetDetector</a> : <span class="keyword">public</span> Vamp::<a class="code" href="classVamp_1_1Plugin.html#a1b78c4f46c72ef345ed27f0b9bf20ac9">Plugin</a>
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="keyword">public</span>:
<a name="l00049"></a>00049     <a class="code" href="classPercussionOnsetDetector.html#a9f700579805ee5105758d847baab3511">PercussionOnsetDetector</a>(<span class="keywordtype">float</span> inputSampleRate);
<a name="l00050"></a>00050     <span class="keyword">virtual</span> <a class="code" href="classPercussionOnsetDetector.html#a99f833667cf8185e879d735216c7642b">~PercussionOnsetDetector</a>();
<a name="l00051"></a>00051 
<a name="l00052"></a>00052     <span class="keywordtype">bool</span> <a class="code" href="classPercussionOnsetDetector.html#a349c528260622308f3850bcda8a448ab" title="Initialise a plugin to prepare it for use with the given number of input channels, step size (window increment, in sample frames) and block size (window size, in sample frames).">initialise</a>(<span class="keywordtype">size_t</span> channels, <span class="keywordtype">size_t</span> stepSize, <span class="keywordtype">size_t</span> blockSize);
<a name="l00053"></a>00053     <span class="keywordtype">void</span> <a class="code" href="classPercussionOnsetDetector.html#a9b1075e992cd9599764ef3881fb91d1a" title="Reset the plugin after use, to prepare it for another clean run.">reset</a>();
<a name="l00054"></a>00054 
<a name="l00055"></a><a class="code" href="classPercussionOnsetDetector.html#a4f6954267696ee5bfa7dd1c4a6cfa92a">00055</a>     <a class="code" href="classVamp_1_1Plugin.html#a39cb7649d6dcc20e4cb1640cd55907bc">InputDomain</a> <a class="code" href="classPercussionOnsetDetector.html#a4f6954267696ee5bfa7dd1c4a6cfa92a" title="Get the plugin&#39;s required input domain.">getInputDomain</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classVamp_1_1Plugin.html#a39cb7649d6dcc20e4cb1640cd55907bcaa30e7877ab33f76acbdca28607e6ab53">FrequencyDomain</a>; }
<a name="l00056"></a>00056 
<a name="l00057"></a>00057     std::string <a class="code" href="classPercussionOnsetDetector.html#a267c83a7533146c127e2c3be310e0154" title="Get the computer-usable name of the plugin.">getIdentifier</a>() <span class="keyword">const</span>;
<a name="l00058"></a>00058     std::string <a class="code" href="classPercussionOnsetDetector.html#aa98f1ad061a11af98c054011a8844e6f" title="Get a human-readable name or title of the plugin.">getName</a>() <span class="keyword">const</span>;
<a name="l00059"></a>00059     std::string <a class="code" href="classPercussionOnsetDetector.html#a9061d189705802a48973a7ccab6360db" title="Get a human-readable description for the plugin, typically a line of text that may optionally be disp...">getDescription</a>() <span class="keyword">const</span>;
<a name="l00060"></a>00060     std::string <a class="code" href="classPercussionOnsetDetector.html#a63d63f2cb7ea8d8b09d58cc13b541375" title="Get the name of the author or vendor of the plugin in human-readable form.">getMaker</a>() <span class="keyword">const</span>;
<a name="l00061"></a>00061     <span class="keywordtype">int</span> <a class="code" href="classPercussionOnsetDetector.html#ad6b818dbd81867ce7be71c99cae861be" title="Get the version number of the plugin.">getPluginVersion</a>() <span class="keyword">const</span>;
<a name="l00062"></a>00062     std::string <a class="code" href="classPercussionOnsetDetector.html#a1a22ece271330c94cc08798a77416351" title="Get the copyright statement or licensing summary for the plugin.">getCopyright</a>() <span class="keyword">const</span>;
<a name="l00063"></a>00063 
<a name="l00064"></a>00064     <span class="keywordtype">size_t</span> <a class="code" href="classPercussionOnsetDetector.html#a733824891e11c306a7a678534b89b968" title="Get the preferred step size (window increment -- the distance in sample frames between the start fram...">getPreferredStepSize</a>() <span class="keyword">const</span>;
<a name="l00065"></a>00065     <span class="keywordtype">size_t</span> <a class="code" href="classPercussionOnsetDetector.html#a410c0b47c6c849d7ed9b726b84402ad0" title="Get the preferred block size (window size -- the number of sample frames passed in each block to the ...">getPreferredBlockSize</a>() <span class="keyword">const</span>;
<a name="l00066"></a>00066 
<a name="l00067"></a>00067     <a class="code" href="classVamp_1_1PluginBase.html#a3b6bb4bbd86affe1ca9deceea1aad4f8">ParameterList</a> <a class="code" href="classPercussionOnsetDetector.html#abceae88cc9762b0ea310d7aad71de815" title="Get the controllable parameters of this plugin.">getParameterDescriptors</a>() <span class="keyword">const</span>;
<a name="l00068"></a>00068     <span class="keywordtype">float</span> <a class="code" href="classPercussionOnsetDetector.html#a9b28da8315fcde46ce7644d6592ba527" title="Get the value of a named parameter.">getParameter</a>(std::string <span class="keywordtype">id</span>) <span class="keyword">const</span>;
<a name="l00069"></a>00069     <span class="keywordtype">void</span> <a class="code" href="classPercussionOnsetDetector.html#aa097d72488e1211f05fc661ff5c6dc01" title="Set a named parameter.">setParameter</a>(std::string <span class="keywordtype">id</span>, <span class="keywordtype">float</span> value);
<a name="l00070"></a>00070 
<a name="l00071"></a>00071     <a class="code" href="classVamp_1_1Plugin.html#a30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> <a class="code" href="classPercussionOnsetDetector.html#aa4537aa0eb58a67d6e824d46924cf782" title="Get the outputs of this plugin.">getOutputDescriptors</a>() <span class="keyword">const</span>;
<a name="l00072"></a>00072 
<a name="l00073"></a>00073     <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classPercussionOnsetDetector.html#adfd989812b3e0cb8f4b498f56a5a9614" title="Process a single block of input data.">process</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *<span class="keyword">const</span> *inputBuffers,
<a name="l00074"></a>00074                        <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...">Vamp::RealTime</a> timestamp);
<a name="l00075"></a>00075 
<a name="l00076"></a>00076     <a class="code" href="classVamp_1_1Plugin.html#a448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classPercussionOnsetDetector.html#ad3d6767ed137783e84f842b4d4732ffa" title="After all blocks have been processed, calculate and return any remaining features derived from the co...">getRemainingFeatures</a>();
<a name="l00077"></a>00077 
<a name="l00078"></a>00078 <span class="keyword">protected</span>:
<a name="l00079"></a><a class="code" href="classPercussionOnsetDetector.html#aabac0cf7e961482b075777e5f0686e6c">00079</a>     <span class="keywordtype">size_t</span> <a class="code" href="classPercussionOnsetDetector.html#aabac0cf7e961482b075777e5f0686e6c">m_stepSize</a>;
<a name="l00080"></a><a class="code" href="classPercussionOnsetDetector.html#a920de543dbcf70a2edd80b5b31313285">00080</a>     <span class="keywordtype">size_t</span> <a class="code" href="classPercussionOnsetDetector.html#a920de543dbcf70a2edd80b5b31313285">m_blockSize</a>;
<a name="l00081"></a>00081 
<a name="l00082"></a><a class="code" href="classPercussionOnsetDetector.html#ab04119adad56d87f2e633de289aab507">00082</a>     <span class="keywordtype">float</span>  <a class="code" href="classPercussionOnsetDetector.html#ab04119adad56d87f2e633de289aab507">m_threshold</a>;
<a name="l00083"></a><a class="code" href="classPercussionOnsetDetector.html#a4e9770f246ba3bc75e7fc2cb8f9010af">00083</a>     <span class="keywordtype">float</span>  <a class="code" href="classPercussionOnsetDetector.html#a4e9770f246ba3bc75e7fc2cb8f9010af">m_sensitivity</a>;
<a name="l00084"></a><a class="code" href="classPercussionOnsetDetector.html#a30daa717267251a9d49afe57c328e989">00084</a>     <span class="keywordtype">float</span> *<a class="code" href="classPercussionOnsetDetector.html#a30daa717267251a9d49afe57c328e989">m_priorMagnitudes</a>;
<a name="l00085"></a><a class="code" href="classPercussionOnsetDetector.html#acd80162c65212be7fa91251263fb9c3d">00085</a>     <span class="keywordtype">float</span>  <a class="code" href="classPercussionOnsetDetector.html#acd80162c65212be7fa91251263fb9c3d">m_dfMinus1</a>;
<a name="l00086"></a><a class="code" href="classPercussionOnsetDetector.html#a6ad7d8353cc681ff42a63b127cca5779">00086</a>     <span class="keywordtype">float</span>  <a class="code" href="classPercussionOnsetDetector.html#a6ad7d8353cc681ff42a63b127cca5779">m_dfMinus2</a>;
<a name="l00087"></a>00087 };
<a name="l00088"></a>00088 
<a name="l00089"></a>00089 
<a name="l00090"></a>00090 <span class="preprocessor">#endif</span>
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