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Add a page about the Vamp Plugin Pack, including links to download mirrors
author Chris Cannam
date Tue, 11 Aug 2020 16:41:11 +0100
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<h1>PowerSpectrum.h</h1><a href="PowerSpectrum_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 "Software"), 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 "AS IS", 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 _POWER_SPECTRUM_PLUGIN_H_</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define _POWER_SPECTRUM_PLUGIN_H_</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include "<a class="code" href="vamp-sdk_2Plugin_8h.html">vamp-sdk/Plugin.h</a>"</span>
<a name="l00041"></a>00041 
<a name="l00050"></a><a class="code" href="classPowerSpectrum.html">00050</a> <span class="keyword">class </span><a class="code" href="classPowerSpectrum.html" title="Example plugin that returns a power spectrum calculated (trivially) from the frequency...">PowerSpectrum</a> : <span class="keyword">public</span> Vamp::<a class="code" href="classVamp_1_1Plugin.html#1b78c4f46c72ef345ed27f0b9bf20ac9">Plugin</a>
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <span class="keyword">public</span>:
<a name="l00053"></a>00053     <a class="code" href="classPowerSpectrum.html#a2550486513a4abcf7b52869002947e7">PowerSpectrum</a>(<span class="keywordtype">float</span> inputSampleRate);
<a name="l00054"></a>00054     <span class="keyword">virtual</span> <a class="code" href="classPowerSpectrum.html#e7081e159ad1da5da1721b3048075306">~PowerSpectrum</a>();
<a name="l00055"></a>00055 
<a name="l00056"></a>00056     <span class="keywordtype">bool</span> <a class="code" href="classPowerSpectrum.html#e2d046334c4bede5be72a0d97e4dfb29" title="Initialise a plugin to prepare it for use with the given number of input channels...">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="l00057"></a>00057     <span class="keywordtype">void</span> <a class="code" href="classPowerSpectrum.html#091ba21e1697ea4208f42e8295c389d9" title="Reset the plugin after use, to prepare it for another clean run.">reset</a>();
<a name="l00058"></a>00058 
<a name="l00059"></a><a class="code" href="classPowerSpectrum.html#e04e0e34847a93f3444d04c802ee56ef">00059</a>     <a class="code" href="classVamp_1_1Plugin.html#39cb7649d6dcc20e4cb1640cd55907bc">InputDomain</a> <a class="code" href="classPowerSpectrum.html#e04e0e34847a93f3444d04c802ee56ef" title="Get the plugin&amp;#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#39cb7649d6dcc20e4cb1640cd55907bca30e7877ab33f76acbdca28607e6ab53">FrequencyDomain</a>; }
<a name="l00060"></a>00060 
<a name="l00061"></a>00061     std::string <a class="code" href="classPowerSpectrum.html#9e9d8349461cbb88d7565a5e8c51b64e" title="Get the computer-usable name of the plugin.">getIdentifier</a>() <span class="keyword">const</span>;
<a name="l00062"></a>00062     std::string <a class="code" href="classPowerSpectrum.html#c9214f9cafeeed3fca549c90aef57623" title="Get a human-readable name or title of the plugin.">getName</a>() <span class="keyword">const</span>;
<a name="l00063"></a>00063     std::string <a class="code" href="classPowerSpectrum.html#7b48d56dc954f3af344f7e4dcd8993e5" title="Get a human-readable description for the plugin, typically a line of text that may...">getDescription</a>() <span class="keyword">const</span>;
<a name="l00064"></a>00064     std::string <a class="code" href="classPowerSpectrum.html#9f3e3f759e2b67c771a41f1c276984b2" 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="l00065"></a>00065     <span class="keywordtype">int</span> <a class="code" href="classPowerSpectrum.html#d23d27e4e82f10404a37b933f6a72c33" title="Get the version number of the plugin.">getPluginVersion</a>() <span class="keyword">const</span>;
<a name="l00066"></a>00066     std::string <a class="code" href="classPowerSpectrum.html#708b4d335c57643d5ef2b2e1caf43bd9" title="Get the copyright statement or licensing summary for the plugin.">getCopyright</a>() <span class="keyword">const</span>;
<a name="l00067"></a>00067 
<a name="l00068"></a>00068     <a class="code" href="classVamp_1_1Plugin.html#30f531b8fb69fac41a24e3d2a6a08ed9">OutputList</a> <a class="code" href="classPowerSpectrum.html#6aac5f93e3a8c033026d739fed427242" title="Get the outputs of this plugin.">getOutputDescriptors</a>() <span class="keyword">const</span>;
<a name="l00069"></a>00069 
<a name="l00070"></a>00070     <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classPowerSpectrum.html#a5664ffc2b37a16db471fae791c1f55f" 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="l00071"></a>00071                        <a class="code" href="structVamp_1_1RealTime.html" title="RealTime represents time values to nanosecond precision with accurate arithmetic...">Vamp::RealTime</a> timestamp);
<a name="l00072"></a>00072 
<a name="l00073"></a>00073     <a class="code" href="classVamp_1_1Plugin.html#448fb57dc245d47923ec9eeaf9856c5f">FeatureSet</a> <a class="code" href="classPowerSpectrum.html#c8a9661a785d38f4c5ce8ca2d53e69f9" title="After all blocks have been processed, calculate and return any remaining features...">getRemainingFeatures</a>();
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="keyword">protected</span>:
<a name="l00076"></a><a class="code" href="classPowerSpectrum.html#399e997c033f26b07edb7cc83cd5a6d8">00076</a>     <span class="keywordtype">size_t</span> <a class="code" href="classPowerSpectrum.html#399e997c033f26b07edb7cc83cd5a6d8">m_blockSize</a>;
<a name="l00077"></a>00077 };
<a name="l00078"></a>00078 
<a name="l00079"></a>00079 
<a name="l00080"></a>00080 <span class="preprocessor">#endif</span>
</pre></div></div>
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