libs/vamp-plugins/Onset.cpp

   1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
   2
   3 /*
   4     Vamp feature extraction plugins using Paul Brossier's Aubio library.
   5
   6     Centre for Digital Music, Queen Mary, University of London.
   7     This file copyright 2006 Chris Cannam.
   8
   9     This program is free software; you can redistribute it and/or
  10     modify it under the terms of the GNU General Public License as
  11     published by the Free Software Foundation; either version 2 of the
  12     License, or (at your option) any later version.  See the file
  13     COPYING included with this distribution for more information.
  14
  15 */
  16
  17 #include <math.h>
  18 #include "Onset.h"
  19
  20 using std::string;
  21 using std::vector;
  22 using std::cerr;
  23 using std::endl;
  24
  25 Onset::Onset(float inputSampleRate) :
  26     Plugin(inputSampleRate),
  27     m_ibuf(0),
  28     m_fftgrain(0),
  29     m_onset(0),
  30     m_pv(0),
  31     m_peakpick(0),
  32     m_onsetdet(0),
  33     m_onsettype(aubio_onset_complex),
  34     m_threshold(0.3),
  35     m_silence(-90),
  36     m_channelCount(1)
  37 {
  38 }
  39
  40 Onset::~Onset()
  41 {
  42     if (m_onsetdet) aubio_onsetdetection_free(m_onsetdet);
  43     if (m_ibuf) del_fvec(m_ibuf);
  44     if (m_onset) del_fvec(m_onset);
  45     if (m_fftgrain) del_cvec(m_fftgrain);
  46     if (m_pv) del_aubio_pvoc(m_pv);
  47     if (m_peakpick) del_aubio_peakpicker(m_peakpick);
  48 }
  49
  50 string
  51 Onset::getIdentifier() const
  52 {
  53     return "aubioonset";
  54 }
  55
  56 string
  57 Onset::getName() const
  58 {
  59     return "Aubio Onset Detector";
  60 }
  61
  62 string
  63 Onset::getDescription() const
  64 {
  65     return "Estimate note onset times";
  66 }
  67
  68 string
  69 Onset::getMaker() const
  70 {
  71     return "Paul Brossier (plugin by Chris Cannam)";
  72 }
  73
  74 int
  75 Onset::getPluginVersion() const
  76 {
  77     return 1;
  78 }
  79
  80 string
  81 Onset::getCopyright() const
  82 {
  83     return "GPL";
  84 }
  85
  86 bool
  87 Onset::initialise(size_t channels, size_t stepSize, size_t blockSize)
  88 {
  89     m_channelCount = channels;
  90     m_stepSize = stepSize;
  91     m_blockSize = blockSize;
  92
  93     m_ibuf = new_fvec(stepSize, channels);
  94     m_onset = new_fvec(1, channels);
  95     m_fftgrain = new_cvec(blockSize, channels);
  96     m_pv = new_aubio_pvoc(blockSize, stepSize, channels);
  97     m_peakpick = new_aubio_peakpicker(m_threshold);
  98
  99     m_onsetdet = new_aubio_onsetdetection(m_onsettype, blockSize, channels);
 100
 101     m_delay = Vamp::RealTime::frame2RealTime(4 * stepSize,
 102                                              lrintf(m_inputSampleRate));
 103
 104     m_lastOnset = Vamp::RealTime::zeroTime - m_delay - m_delay;
 105
 106     return true;
 107 }
 108
 109 void
 110 Onset::reset()
 111 {
 112 }
 113
 114 size_t
 115 Onset::getPreferredStepSize() const
 116 {
 117     return 512;
 118 }
 119
 120 size_t
 121 Onset::getPreferredBlockSize() const
 122 {
 123     return 2 * getPreferredStepSize();
 124 }
 125
 126 Onset::ParameterList
 127 Onset::getParameterDescriptors() const
 128 {
 129     ParameterList list;
 130
 131     ParameterDescriptor desc;
 132     desc.identifier = "onsettype";
 133     desc.name = "Onset Detection Function Type";
 134     desc.minValue = 0;
 135     desc.maxValue = 6;
 136     desc.defaultValue = (int)aubio_onset_complex;
 137     desc.isQuantized = true;
 138     desc.quantizeStep = 1;
 139     desc.valueNames.push_back("Energy Based");
 140     desc.valueNames.push_back("Spectral Difference");
 141     desc.valueNames.push_back("High-Frequency Content");
 142     desc.valueNames.push_back("Complex Domain");
 143     desc.valueNames.push_back("Phase Deviation");
 144     desc.valueNames.push_back("Kullback-Liebler");
 145     desc.valueNames.push_back("Modified Kullback-Liebler");
 146     list.push_back(desc);
 147
 148     desc = ParameterDescriptor();
 149     desc.identifier = "peakpickthreshold";
 150     desc.name = "Peak Picker Threshold";
 151     desc.minValue = 0;
 152     desc.maxValue = 1;
 153     desc.defaultValue = 0.3;
 154     desc.isQuantized = false;
 155     list.push_back(desc);
 156
 157     desc = ParameterDescriptor();
 158     desc.identifier = "silencethreshold";
 159     desc.name = "Silence Threshold";
 160     desc.minValue = -120;
 161     desc.maxValue = 0;
 162     desc.defaultValue = -90;
 163     desc.unit = "dB";
 164     desc.isQuantized = false;
 165     list.push_back(desc);
 166
 167     return list;
 168 }
 169
 170 float
 171 Onset::getParameter(std::string param) const
 172 {
 173     if (param == "onsettype") {
 174         return m_onsettype;
 175     } else if (param == "peakpickthreshold") {
 176         return m_threshold;
 177     } else if (param == "silencethreshold") {
 178         return m_silence;
 179     } else {
 180         return 0.0;
 181     }
 182 }
 183
 184 void
 185 Onset::setParameter(std::string param, float value)
 186 {
 187     if (param == "onsettype") {
 188         switch (lrintf(value)) {
 189         case 0: m_onsettype = aubio_onset_energy; break;
 190         case 1: m_onsettype = aubio_onset_specdiff; break;
 191         case 2: m_onsettype = aubio_onset_hfc; break;
 192         case 3: m_onsettype = aubio_onset_complex; break;
 193         case 4: m_onsettype = aubio_onset_phase; break;
 194         case 5: m_onsettype = aubio_onset_kl; break;
 195         case 6: m_onsettype = aubio_onset_mkl; break;
 196         }
 197     } else if (param == "peakpickthreshold") {
 198         m_threshold = value;
 199     } else if (param == "silencethreshold") {
 200         m_silence = value;
 201     }
 202 }
 203
 204 Onset::OutputList
 205 Onset::getOutputDescriptors() const
 206 {
 207     OutputList list;
 208
 209     OutputDescriptor d;
 210     d.identifier = "onsets";
 211     d.name = "Onsets";
 212     d.unit = "";
 213     d.hasFixedBinCount = true;
 214     d.binCount = 0;
 215     d.sampleType = OutputDescriptor::VariableSampleRate;
 216     d.sampleRate = 0;
 217     list.push_back(d);
 218
 219     d = OutputDescriptor();
 220     d.identifier = "detectionfunction";
 221     d.name = "Onset Detection Function";
 222     d.unit = "";
 223     d.hasFixedBinCount = true;
 224     d.binCount = m_channelCount;
 225     d.hasKnownExtents = false;
 226     d.isQuantized = false;
 227     d.sampleType = OutputDescriptor::OneSamplePerStep;
 228     list.push_back(d);
 229
 230     return list;
 231 }
 232
 233 Onset::FeatureSet
 234 Onset::process(const float *const *inputBuffers,
 235                Vamp::RealTime timestamp)
 236 {
 237     for (size_t i = 0; i < m_stepSize; ++i) {
 238         for (size_t j = 0; j < m_channelCount; ++j) {
 239             fvec_write_sample(m_ibuf, inputBuffers[j][i], j, i);
 240         }
 241     }
 242
 243     aubio_pvoc_do(m_pv, m_ibuf, m_fftgrain);
 244     aubio_onsetdetection(m_onsetdet, m_fftgrain, m_onset);
 245
 246     bool isonset = aubio_peakpick_pimrt(m_onset, m_peakpick);
 247
 248     if (isonset) {
 249         if (aubio_silence_detection(m_ibuf, m_silence)) {
 250             isonset = false;
 251         }
 252     }
 253
 254     FeatureSet returnFeatures;
 255
 256     if (isonset) {
 257         if (timestamp - m_lastOnset >= m_delay) {
 258             Feature onsettime;
 259             onsettime.hasTimestamp = true;
 260             if (timestamp < m_delay) timestamp = m_delay;
 261             onsettime.timestamp = timestamp - m_delay;
 262             returnFeatures[0].push_back(onsettime);
 263             m_lastOnset = timestamp;
 264         }
 265     }
 266     Feature feature;
 267     for (size_t j = 0; j < m_channelCount; ++j) {
 268         feature.values.push_back(m_onset->data[j][0]);
 269     }
 270     returnFeatures[1].push_back(feature);
 271
 272     return returnFeatures;
 273 }
 274
 275 Onset::FeatureSet
 276 Onset::getRemainingFeatures()
 277 {
 278     return FeatureSet();
 279 }
 280