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livetrax/libs/vamp-plugins/Onset.cpp

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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Vamp feature extraction plugins using Paul Brossier's Aubio library.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2006 Chris Cannam.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#include <math.h>
#include "Onset.h"
using std::string;
using std::vector;
using std::cerr;
using std::endl;
Onset::Onset(float inputSampleRate) :
Plugin(inputSampleRate),
m_ibuf(0),
m_fftgrain(0),
m_onset(0),
m_pv(0),
m_peakpick(0),
m_onsetdet(0),
m_onsettype(aubio_onset_complex),
m_threshold(0.3),
m_silence(-90),
m_channelCount(1)
{
}
Onset::~Onset()
{
if (m_onsetdet) aubio_onsetdetection_free(m_onsetdet);
if (m_ibuf) del_fvec(m_ibuf);
if (m_onset) del_fvec(m_onset);
if (m_fftgrain) del_cvec(m_fftgrain);
if (m_pv) del_aubio_pvoc(m_pv);
if (m_peakpick) del_aubio_peakpicker(m_peakpick);
}
string
Onset::getIdentifier() const
{
return "aubioonset";
}
string
Onset::getName() const
{
return "Aubio Onset Detector";
}
string
Onset::getDescription() const
{
return "Estimate note onset times";
}
string
Onset::getMaker() const
{
return "Paul Brossier (plugin by Chris Cannam)";
}
int
Onset::getPluginVersion() const
{
return 1;
}
string
Onset::getCopyright() const
{
return "GPL";
}
bool
Onset::initialise(size_t channels, size_t stepSize, size_t blockSize)
{
m_channelCount = channels;
m_stepSize = stepSize;
m_blockSize = blockSize;
m_ibuf = new_fvec(stepSize, channels);
m_onset = new_fvec(1, channels);
m_fftgrain = new_cvec(blockSize, channels);
m_pv = new_aubio_pvoc(blockSize, stepSize, channels);
m_peakpick = new_aubio_peakpicker(m_threshold);
m_onsetdet = new_aubio_onsetdetection(m_onsettype, blockSize, channels);
m_delay = Vamp::RealTime::frame2RealTime(4 * stepSize,
lrintf(m_inputSampleRate));
m_lastOnset = Vamp::RealTime::zeroTime - m_delay - m_delay;
return true;
}
void
Onset::reset()
{
}
size_t
Onset::getPreferredStepSize() const
{
return 512;
}
size_t
Onset::getPreferredBlockSize() const
{
return 2 * getPreferredStepSize();
}
Onset::ParameterList
Onset::getParameterDescriptors() const
{
ParameterList list;
ParameterDescriptor desc;
desc.identifier = "onsettype";
desc.name = "Onset Detection Function Type";
desc.minValue = 0;
desc.maxValue = 6;
desc.defaultValue = (int)aubio_onset_complex;
desc.isQuantized = true;
desc.quantizeStep = 1;
desc.valueNames.push_back("Energy Based");
desc.valueNames.push_back("Spectral Difference");
desc.valueNames.push_back("High-Frequency Content");
desc.valueNames.push_back("Complex Domain");
desc.valueNames.push_back("Phase Deviation");
desc.valueNames.push_back("Kullback-Liebler");
desc.valueNames.push_back("Modified Kullback-Liebler");
list.push_back(desc);
desc = ParameterDescriptor();
desc.identifier = "peakpickthreshold";
desc.name = "Peak Picker Threshold";
desc.minValue = 0;
desc.maxValue = 1;
desc.defaultValue = 0.3;
desc.isQuantized = false;
list.push_back(desc);
desc = ParameterDescriptor();
desc.identifier = "silencethreshold";
desc.name = "Silence Threshold";
desc.minValue = -120;
desc.maxValue = 0;
desc.defaultValue = -90;
desc.unit = "dB";
desc.isQuantized = false;
list.push_back(desc);
return list;
}
float
Onset::getParameter(std::string param) const
{
if (param == "onsettype") {
return m_onsettype;
} else if (param == "peakpickthreshold") {
return m_threshold;
} else if (param == "silencethreshold") {
return m_silence;
} else {
return 0.0;
}
}
void
Onset::setParameter(std::string param, float value)
{
if (param == "onsettype") {
switch (lrintf(value)) {
case 0: m_onsettype = aubio_onset_energy; break;
case 1: m_onsettype = aubio_onset_specdiff; break;
case 2: m_onsettype = aubio_onset_hfc; break;
case 3: m_onsettype = aubio_onset_complex; break;
case 4: m_onsettype = aubio_onset_phase; break;
case 5: m_onsettype = aubio_onset_kl; break;
case 6: m_onsettype = aubio_onset_mkl; break;
}
} else if (param == "peakpickthreshold") {
m_threshold = value;
} else if (param == "silencethreshold") {
m_silence = value;
}
}
Onset::OutputList
Onset::getOutputDescriptors() const
{
OutputList list;
OutputDescriptor d;
d.identifier = "onsets";
d.name = "Onsets";
d.unit = "";
d.hasFixedBinCount = true;
d.binCount = 0;
d.sampleType = OutputDescriptor::VariableSampleRate;
d.sampleRate = 0;
list.push_back(d);
d = OutputDescriptor();
d.identifier = "detectionfunction";
d.name = "Onset Detection Function";
d.unit = "";
d.hasFixedBinCount = true;
d.binCount = m_channelCount;
d.hasKnownExtents = false;
d.isQuantized = false;
d.sampleType = OutputDescriptor::OneSamplePerStep;
list.push_back(d);
return list;
}
Onset::FeatureSet
Onset::process(const float *const *inputBuffers,
Vamp::RealTime timestamp)
{
for (size_t i = 0; i < m_stepSize; ++i) {
for (size_t j = 0; j < m_channelCount; ++j) {
fvec_write_sample(m_ibuf, inputBuffers[j][i], j, i);
}
}
aubio_pvoc_do(m_pv, m_ibuf, m_fftgrain);
aubio_onsetdetection(m_onsetdet, m_fftgrain, m_onset);
bool isonset = aubio_peakpick_pimrt(m_onset, m_peakpick);
if (isonset) {
if (aubio_silence_detection(m_ibuf, m_silence)) {
isonset = false;
}
}
FeatureSet returnFeatures;
if (isonset) {
if (timestamp - m_lastOnset >= m_delay) {
Feature onsettime;
onsettime.hasTimestamp = true;
if (timestamp < m_delay) timestamp = m_delay;
onsettime.timestamp = timestamp - m_delay;
returnFeatures[0].push_back(onsettime);
m_lastOnset = timestamp;
}
}
Feature feature;
for (size_t j = 0; j < m_channelCount; ++j) {
feature.values.push_back(m_onset->data[j][0]);
}
returnFeatures[1].push_back(feature);
return returnFeatures;
}
Onset::FeatureSet
Onset::getRemainingFeatures()
{
return FeatureSet();
}