diff vamp/CQVamp.cpp @ 35:75d528478feb

Add Vamp plugin for testing with

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vamp/CQVamp.cpp	Wed Nov 06 14:30:42 2013 +0000
@@ -0,0 +1,237 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+#include "CQVamp.h"
+
+#include "../cpp-qm-dsp/ConstantQ.h"
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+CQVamp::CQVamp(float inputSampleRate) :
+    Vamp::Plugin(inputSampleRate),
+    m_cq(0),
+    m_maxFrequency(inputSampleRate/2),
+    m_minFrequency(46),
+    m_bpo(24)
+{
+}
+
+CQVamp::~CQVamp()
+{
+    delete m_cq;
+}
+
+string
+CQVamp::getIdentifier() const
+{
+    return "cqvamp";
+}
+
+string
+CQVamp::getName() const
+{
+    return "Constant-Q Spectrogram";
+}
+
+string
+CQVamp::getDescription() const
+{
+    return "Extract a spectrogram with constant ratio of centre frequency to resolution from the input audio";
+}
+
+string
+CQVamp::getMaker() const
+{
+    return "Queen Mary, University of London";
+}
+
+int
+CQVamp::getPluginVersion() const
+{
+    return 1;
+}
+
+string
+CQVamp::getCopyright() const
+{
+    return "Plugin by Chris Cannam. Method by Christian Schörkhuber and Anssi Klapuri. Copyright (c) 2013 QMUL";
+}
+
+CQVamp::ParameterList
+CQVamp::getParameterDescriptors() const
+{
+    ParameterList list;
+
+    ParameterDescriptor desc;
+    desc.identifier = "minfreq";
+    desc.name = "Minimum Frequency";
+    desc.unit = "Hz";
+    desc.description = "Hint for the lowest frequency to be included in the constant-Q transform. The actual frequency range will be an integral number of octaves ending at the highest frequency specified";
+    desc.minValue = 10;
+    desc.maxValue = m_inputSampleRate/2;
+    desc.defaultValue = 46;
+    desc.isQuantized = false;
+    list.push_back(desc);
+
+    desc.identifier = "maxfreq";
+    desc.name = "Maximum Frequency";
+    desc.unit = "Hz";
+    desc.description = "Highest frequency to be included in the constant-Q transform";
+    desc.minValue = 10;
+    desc.maxValue = m_inputSampleRate/2;
+    desc.defaultValue = m_inputSampleRate/2;
+    desc.isQuantized = false;
+    list.push_back(desc);
+    
+    desc.identifier = "bpo";
+    desc.name = "Bins per Octave";
+    desc.unit = "bins";
+    desc.description = "Number of constant-Q transform bins per octave";
+    desc.minValue = 2;
+    desc.maxValue = 480;
+    desc.defaultValue = 24;
+    desc.isQuantized = true;
+    desc.quantizeStep = 1;
+    list.push_back(desc);
+
+    return list;
+}
+
+float
+CQVamp::getParameter(std::string param) const
+{
+    if (param == "minfreq") {
+        return m_minFrequency;
+    }
+    if (param == "maxfreq") {
+        return m_maxFrequency;
+    }
+    if (param == "bpo") {
+        return m_bpo;
+    }
+    std::cerr << "WARNING: CQVamp::getParameter: unknown parameter \""
+              << param << "\"" << std::endl;
+    return 0.0;
+}
+
+void
+CQVamp::setParameter(std::string param, float value)
+{
+    if (param == "minfreq") {
+        m_minFrequency = value;
+    } else if (param == "maxfreq") {
+        m_maxFrequency = value;
+    } else if (param == "bpo") {
+        m_bpo = lrintf(value);
+    } else {
+        std::cerr << "WARNING: CQVamp::setParameter: unknown parameter \""
+                  << param << "\"" << std::endl;
+    }
+}
+
+bool
+CQVamp::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (m_cq) {
+	delete m_cq;
+	m_cq = 0;
+    }
+
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = stepSize;
+    m_blockSize = blockSize;
+
+    m_cq = new ConstantQ
+	(m_inputSampleRate, m_minFrequency, m_maxFrequency, m_bpo);
+
+    return true;
+}
+
+void
+CQVamp::reset()
+{
+    if (m_cq) {
+	delete m_cq;
+	m_cq = new ConstantQ
+	    (m_inputSampleRate, m_minFrequency, m_maxFrequency, m_bpo);
+    }
+}
+
+size_t
+CQVamp::getPreferredStepSize() const
+{
+    return 0;
+}
+
+size_t
+CQVamp::getPreferredBlockSize() const
+{
+    return 0;
+}
+
+CQVamp::OutputList
+CQVamp::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor d;
+    d.identifier = "constantq";
+    d.name = "Constant-Q Spectrogram";
+    d.unit = "";
+    d.description = "Output of constant-Q transform, as a single vector per process block";
+    d.hasFixedBinCount = true;
+    d.binCount = (m_cq ? m_cq->getTotalBins() : (9 * 24));
+    d.hasKnownExtents = false;
+    d.isQuantized = false;
+    d.sampleType = OutputDescriptor::FixedSampleRate;
+    d.sampleRate = m_inputSampleRate / (m_cq ? m_cq->getColumnHop() : 256);
+    list.push_back(d);
+
+    return list;
+}
+
+CQVamp::FeatureSet
+CQVamp::process(const float *const *inputBuffers,
+		Vamp::RealTime /* timestamp */)
+{
+    if (!m_cq) {
+	cerr << "ERROR: CQVamp::process: "
+	     << "Plugin has not been initialised"
+	     << endl;
+	return FeatureSet();
+    }
+
+    vector<double> data;
+    for (int i = 0; i < m_blockSize; ++i) data.push_back(inputBuffers[0][i]);
+    
+    vector<vector<double> > cqout = m_cq->process(data);
+
+    FeatureSet returnFeatures;
+
+    for (int i = 0; i < cqout.size(); ++i) {
+
+	vector<float> column(m_cq->getTotalBins(), 0.f);
+	for (int j = 0; j < cqout[i].size(); ++j) {
+	    column[j] = cqout[i][j];
+	}
+
+	Feature feature;
+	feature.hasTimestamp = false;
+	feature.values = column;
+	feature.label = "";
+	returnFeatures[0].push_back(feature);
+    }
+
+    return returnFeatures;
+}
+
+CQVamp::FeatureSet
+CQVamp::getRemainingFeatures()
+{
+    return FeatureSet();
+}
+