# HG changeset patch
# User cannam
# Date 1225980333 0
# Node ID 14029eb084723b39dc3ec73d5f37735fa43940be
# Parent  f8b38a017d9a9155e09fe96b72890380bb6331b3
* start moving things about

diff -r f8b38a017d9a -r 14029eb08472 examples/AmplitudeFollower.cpp
--- a/examples/AmplitudeFollower.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,247 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    This file copyright 2006 Dan Stowell.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "AmplitudeFollower.h"
-
-#include <cmath>
-
-#include <string>
-#include <vector>
-#include <iostream>
-
-using std::string;
-using std::vector;
-using std::cerr;
-using std::endl;
-
-/**
- * An implementation of SuperCollider's amplitude-follower algorithm
- * as a simple Vamp plugin.
- */
-
-AmplitudeFollower::AmplitudeFollower(float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_stepSize(0),
-    m_previn(0.0f),
-    m_clampcoef(0.01f),
-    m_relaxcoef(0.01f)
-{
-}
-
-AmplitudeFollower::~AmplitudeFollower()
-{
-}
-
-string
-AmplitudeFollower::getIdentifier() const
-{
-    return "amplitudefollower";
-}
-
-string
-AmplitudeFollower::getName() const
-{
-    return "Amplitude Follower";
-}
-
-string
-AmplitudeFollower::getDescription() const
-{
-    return "Track the amplitude of the audio signal";
-}
-
-string
-AmplitudeFollower::getMaker() const
-{
-    return "Vamp SDK Example Plugins";
-}
-
-int
-AmplitudeFollower::getPluginVersion() const
-{
-    return 1;
-}
-
-string
-AmplitudeFollower::getCopyright() const
-{
-    return "Code copyright 2006 Dan Stowell; method from SuperCollider.  Freely redistributable (BSD license)";
-}
-
-bool
-AmplitudeFollower::initialise(size_t channels, size_t stepSize, size_t blockSize)
-{
-    if (channels < getMinChannelCount() ||
-	channels > getMaxChannelCount()) return false;
-
-    m_stepSize = std::min(stepSize, blockSize);
-	
-    // Translate the coefficients 
-    // from their "convenient" 60dB convergence-time values
-    // to real coefficients
-    m_clampcoef = m_clampcoef==0.0 ? 0.0 : exp(log(0.1)/(m_clampcoef * m_inputSampleRate));
-    m_relaxcoef = m_relaxcoef==0.0 ? 0.0 : exp(log(0.1)/(m_relaxcoef * m_inputSampleRate));
-
-    return true;
-}
-
-void
-AmplitudeFollower::reset()
-{
-    m_previn = 0.0f;
-}
-
-AmplitudeFollower::OutputList
-AmplitudeFollower::getOutputDescriptors() const
-{
-    OutputList list;
-
-    OutputDescriptor sca;
-    sca.identifier = "amplitude";
-    sca.name = "Amplitude";
-    sca.description = "";
-    sca.unit = "V";
-    sca.hasFixedBinCount = true;
-    sca.binCount = 1;
-    sca.hasKnownExtents = false;
-    sca.isQuantized = false;
-    sca.sampleType = OutputDescriptor::OneSamplePerStep;
-    list.push_back(sca);
-
-    return list;
-}
-
-AmplitudeFollower::ParameterList
-AmplitudeFollower::getParameterDescriptors() const
-{
-    ParameterList list;
-	
-    ParameterDescriptor att;
-    att.identifier = "attack";
-    att.name = "Attack time";
-    att.description = "";
-    att.unit = "s";
-    att.minValue = 0.0f;
-    att.maxValue = 1.f;
-    att.defaultValue = 0.01f;
-    att.isQuantized = false;
-    
-    list.push_back(att);
-    
-    ParameterDescriptor dec;
-    dec.identifier = "release";
-    dec.name = "Release time";
-    dec.description = "";
-    dec.unit = "s";
-    dec.minValue = 0.0f;
-    dec.maxValue = 1.f;
-    dec.defaultValue = 0.01f;
-    dec.isQuantized = false;
-    
-    list.push_back(dec);
-    
-    return list;
-}
-
-void AmplitudeFollower::setParameter(std::string paramid, float newval)
-{
-    if (paramid == "attack") {
-        m_clampcoef = newval;
-    } else if (paramid == "release") {
-        m_relaxcoef = newval;
-    }
-}
-
-float AmplitudeFollower::getParameter(std::string paramid) const
-{
-    if (paramid == "attack") {
-        return m_clampcoef;
-    } else if (paramid == "release") {
-        return m_relaxcoef;
-    }
-
-    return 0.0f;
-}
-
-AmplitudeFollower::FeatureSet
-AmplitudeFollower::process(const float *const *inputBuffers,
-                           Vamp::RealTime timestamp)
-{
-    if (m_stepSize == 0) {
-	cerr << "ERROR: AmplitudeFollower::process: "
-	     << "AmplitudeFollower has not been initialised"
-	     << endl;
-	return FeatureSet();
-    }
-
-    float previn = m_previn;
-
-    FeatureSet returnFeatures;
-	
-    float val;
-    float peak = 0.0f;
-
-    for (size_t i = 0; i < m_stepSize; ++i) {
-
-        val = fabs(inputBuffers[0][i]);
-		
-        if (val < previn) {
-            val = val + (previn - val) * m_relaxcoef;
-        } else {
-            val = val + (previn - val) * m_clampcoef;
-        }
-
-        if (val > peak) peak = val;
-        previn = val;
-    }
-
-    m_previn = previn;
-
-    // Now store the "feature" (peak amp) for this sample
-    Feature feature;
-    feature.hasTimestamp = false;
-    feature.values.push_back(peak);
-    returnFeatures[0].push_back(feature);
-
-    return returnFeatures;
-}
-
-AmplitudeFollower::FeatureSet
-AmplitudeFollower::getRemainingFeatures()
-{
-    return FeatureSet();
-}
-
diff -r f8b38a017d9a -r 14029eb08472 examples/FixedTempoEstimator.cpp
--- a/examples/FixedTempoEstimator.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,534 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006-2008 Chris Cannam and QMUL.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "FixedTempoEstimator.h"
-
-using std::string;
-using std::vector;
-using std::cerr;
-using std::endl;
-
-using Vamp::RealTime;
-
-#include <cmath>
-
-
-FixedTempoEstimator::FixedTempoEstimator(float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_stepSize(0),
-    m_blockSize(0),
-    m_priorMagnitudes(0),
-    m_df(0),
-    m_r(0),
-    m_fr(0),
-    m_t(0),
-    m_n(0)
-{
-}
-
-FixedTempoEstimator::~FixedTempoEstimator()
-{
-    delete[] m_priorMagnitudes;
-    delete[] m_df;
-    delete[] m_r;
-    delete[] m_fr;
-    delete[] m_t;
-}
-
-string
-FixedTempoEstimator::getIdentifier() const
-{
-    return "fixedtempo";
-}
-
-string
-FixedTempoEstimator::getName() const
-{
-    return "Simple Fixed Tempo Estimator";
-}
-
-string
-FixedTempoEstimator::getDescription() const
-{
-    return "Study a short section of audio and estimate its tempo, assuming the tempo is constant";
-}
-
-string
-FixedTempoEstimator::getMaker() const
-{
-    return "Vamp SDK Example Plugins";
-}
-
-int
-FixedTempoEstimator::getPluginVersion() const
-{
-    return 1;
-}
-
-string
-FixedTempoEstimator::getCopyright() const
-{
-    return "Code copyright 2008 Queen Mary, University of London.  Freely redistributable (BSD license)";
-}
-
-size_t
-FixedTempoEstimator::getPreferredStepSize() const
-{
-    return 64;
-}
-
-size_t
-FixedTempoEstimator::getPreferredBlockSize() const
-{
-    return 256;
-}
-
-bool
-FixedTempoEstimator::initialise(size_t channels, size_t stepSize, size_t blockSize)
-{
-    if (channels < getMinChannelCount() ||
-	channels > getMaxChannelCount()) return false;
-
-    m_stepSize = stepSize;
-    m_blockSize = blockSize;
-
-    float dfLengthSecs = 10.f;
-    m_dfsize = (dfLengthSecs * m_inputSampleRate) / m_stepSize;
-
-    m_priorMagnitudes = new float[m_blockSize/2];
-    m_df = new float[m_dfsize];
-
-    for (size_t i = 0; i < m_blockSize/2; ++i) {
-        m_priorMagnitudes[i] = 0.f;
-    }
-    for (size_t i = 0; i < m_dfsize; ++i) {
-        m_df[i] = 0.f;
-    }
-
-    m_n = 0;
-
-    return true;
-}
-
-void
-FixedTempoEstimator::reset()
-{
-    cerr << "FixedTempoEstimator: reset called" << endl;
-
-    if (!m_priorMagnitudes) return;
-
-    cerr << "FixedTempoEstimator: resetting" << endl;
-
-    for (size_t i = 0; i < m_blockSize/2; ++i) {
-        m_priorMagnitudes[i] = 0.f;
-    }
-    for (size_t i = 0; i < m_dfsize; ++i) {
-        m_df[i] = 0.f;
-    }
-
-    delete[] m_r;
-    m_r = 0;
-
-    delete[] m_fr; 
-    m_fr = 0;
-
-    delete[] m_t; 
-    m_t = 0;
-
-    m_n = 0;
-
-    m_start = RealTime::zeroTime;
-    m_lasttime = RealTime::zeroTime;
-}
-
-FixedTempoEstimator::ParameterList
-FixedTempoEstimator::getParameterDescriptors() const
-{
-    ParameterList list;
-    return list;
-}
-
-float
-FixedTempoEstimator::getParameter(std::string id) const
-{
-    return 0.f;
-}
-
-void
-FixedTempoEstimator::setParameter(std::string id, float value)
-{
-}
-
-static int TempoOutput = 0;
-static int CandidatesOutput = 1;
-static int DFOutput = 2;
-static int ACFOutput = 3;
-static int FilteredACFOutput = 4;
-
-FixedTempoEstimator::OutputList
-FixedTempoEstimator::getOutputDescriptors() const
-{
-    OutputList list;
-
-    OutputDescriptor d;
-    d.identifier = "tempo";
-    d.name = "Tempo";
-    d.description = "Estimated tempo";
-    d.unit = "bpm";
-    d.hasFixedBinCount = true;
-    d.binCount = 1;
-    d.hasKnownExtents = false;
-    d.isQuantized = false;
-    d.sampleType = OutputDescriptor::VariableSampleRate;
-    d.sampleRate = m_inputSampleRate;
-    d.hasDuration = true; // our returned tempo spans a certain range
-    list.push_back(d);
-
-    d.identifier = "candidates";
-    d.name = "Tempo candidates";
-    d.description = "Possible tempo estimates, one per bin with the most likely in the first bin";
-    d.unit = "bpm";
-    d.hasFixedBinCount = false;
-    list.push_back(d);
-
-    d.identifier = "detectionfunction";
-    d.name = "Detection Function";
-    d.description = "Onset detection function";
-    d.unit = "";
-    d.hasFixedBinCount = 1;
-    d.binCount = 1;
-    d.hasKnownExtents = true;
-    d.minValue = 0.0;
-    d.maxValue = 1.0;
-    d.isQuantized = false;
-    d.quantizeStep = 0.0;
-    d.sampleType = OutputDescriptor::FixedSampleRate;
-    if (m_stepSize) {
-        d.sampleRate = m_inputSampleRate / m_stepSize;
-    } else {
-        d.sampleRate = m_inputSampleRate / (getPreferredBlockSize()/2);
-    }
-    d.hasDuration = false;
-    list.push_back(d);
-
-    d.identifier = "acf";
-    d.name = "Autocorrelation Function";
-    d.description = "Autocorrelation of onset detection function";
-    d.hasKnownExtents = false;
-    d.unit = "r";
-    list.push_back(d);
-
-    d.identifier = "filtered_acf";
-    d.name = "Filtered Autocorrelation";
-    d.description = "Filtered autocorrelation of onset detection function";
-    d.unit = "r";
-    list.push_back(d);
-
-    return list;
-}
-
-FixedTempoEstimator::FeatureSet
-FixedTempoEstimator::process(const float *const *inputBuffers, RealTime ts)
-{
-    FeatureSet fs;
-
-    if (m_stepSize == 0) {
-	cerr << "ERROR: FixedTempoEstimator::process: "
-	     << "FixedTempoEstimator has not been initialised"
-	     << endl;
-	return fs;
-    }
-
-//    if (m_n < m_dfsize) cerr << "m_n = " << m_n << endl;
-
-    if (m_n == 0) m_start = ts;
-    m_lasttime = ts;
-
-    if (m_n == m_dfsize) {
-        calculate();
-        fs = assembleFeatures();
-        ++m_n;
-        return fs;
-    }
-
-    if (m_n > m_dfsize) return FeatureSet();
-
-    float value = 0.f;
-
-    for (size_t i = 1; i < m_blockSize/2; ++i) {
-
-        float real = inputBuffers[0][i*2];
-        float imag = inputBuffers[0][i*2 + 1];
-
-        float sqrmag = real * real + imag * imag;
-        value += fabsf(sqrmag - m_priorMagnitudes[i]);
-
-        m_priorMagnitudes[i] = sqrmag;
-    }
-
-    m_df[m_n] = value;
-
-    ++m_n;
-    return fs;
-}
-
-FixedTempoEstimator::FeatureSet
-FixedTempoEstimator::getRemainingFeatures()
-{
-    FeatureSet fs;
-    if (m_n > m_dfsize) return fs;
-    calculate();
-    fs = assembleFeatures();
-    ++m_n;
-    return fs;
-}
-
-float
-FixedTempoEstimator::lag2tempo(int lag)
-{
-    return 60.f / ((lag * m_stepSize) / m_inputSampleRate);
-}
-
-int
-FixedTempoEstimator::tempo2lag(float tempo)
-{
-    return ((60.f / tempo) * m_inputSampleRate) / m_stepSize;
-}
-
-void
-FixedTempoEstimator::calculate()
-{    
-    cerr << "FixedTempoEstimator::calculate: m_n = " << m_n << endl;
-    
-    if (m_r) {
-        cerr << "FixedTempoEstimator::calculate: calculation already happened?" << endl;
-        return;
-    }
-
-    if (m_n < m_dfsize / 9) {
-        cerr << "FixedTempoEstimator::calculate: Not enough data to go on (have " << m_n << ", want at least " << m_dfsize/4 << ")" << endl;
-        return; // not enough data (perhaps we should return the duration of the input as the "estimated" beat length?)
-    }
-
-    int n = m_n;
-
-    m_r = new float[n/2];
-    m_fr = new float[n/2];
-    m_t = new float[n/2];
-
-    for (int i = 0; i < n/2; ++i) {
-        m_r[i] = 0.f;
-        m_fr[i] = 0.f;
-        m_t[i] = lag2tempo(i);
-    }
-
-    for (int i = 0; i < n/2; ++i) {
-
-        for (int j = i; j < n-1; ++j) {
-            m_r[i] += m_df[j] * m_df[j - i];
-        }
-
-        m_r[i] /= n - i - 1;
-    }
-
-    float related[] = { 0.5, 2, 3, 4 };
-
-    for (int i = 1; i < n/2-1; ++i) {
-
-        float weight = 1.f - fabsf(128.f - lag2tempo(i)) * 0.005;
-        if (weight < 0.f) weight = 0.f;
-        weight = weight * weight * weight;
-
-        m_fr[i] = m_r[i];
-
-        int div = 1;
-
-        for (int j = 0; j < int(sizeof(related)/sizeof(related[0])); ++j) {
-
-            int k0 = int(i * related[j] + 0.5);
-
-            if (k0 >= 0 && k0 < int(n/2)) {
-
-                int kmax = 0, kmin = 0;
-                float kvmax = 0, kvmin = 0;
-                bool have = false;
-
-                for (int k = k0 - 1; k <= k0 + 1; ++k) {
-
-                    if (k < 0 || k >= n/2) continue;
-
-                    if (!have || (m_r[k] > kvmax)) { kmax = k; kvmax = m_r[k]; }
-                    if (!have || (m_r[k] < kvmin)) { kmin = k; kvmin = m_r[k]; }
-                    
-                    have = true;
-                }
-                
-                m_fr[i] += m_r[kmax] / 5;
-
-                if ((kmax == 0 || m_r[kmax] > m_r[kmax-1]) &&
-                    (kmax == n/2-1 || m_r[kmax] > m_r[kmax+1]) &&
-                    kvmax > kvmin * 1.05) {
-                    
-                    m_t[i] = m_t[i] + lag2tempo(kmax) * related[j];
-                    ++div;
-                }
-            }
-        }
-        
-        m_t[i] /= div;
-        
-//        if (div > 1) {
-//            cerr << "adjusting tempo from " << lag2tempo(i) << " to "
-//                 << m_t[i] << " for fr = " << m_fr[i] << " (div = " << div << ")" << endl;
-//        }
-        
-        m_fr[i] += m_fr[i] * (weight / 3);
-    }
-}
-    
-
-FixedTempoEstimator::FeatureSet
-FixedTempoEstimator::assembleFeatures()
-{
-    FeatureSet fs;
-    if (!m_r) return fs; // No results
-
-    Feature feature;
-    feature.hasTimestamp = true;
-    feature.hasDuration = false;
-    feature.label = "";
-    feature.values.clear();
-    feature.values.push_back(0.f);
-
-    char buffer[40];
-
-    int n = m_n;
-
-    for (int i = 0; i < n; ++i) {
-        feature.timestamp = m_start +
-            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
-        feature.values[0] = m_df[i];
-        feature.label = "";
-        fs[DFOutput].push_back(feature);
-    }
-
-    for (int i = 1; i < n/2; ++i) {
-        feature.timestamp = m_start +
-            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
-        feature.values[0] = m_r[i];
-        sprintf(buffer, "%.1f bpm", lag2tempo(i));
-        if (i == n/2-1) feature.label = "";
-        else feature.label = buffer;
-        fs[ACFOutput].push_back(feature);
-    }
-
-    float t0 = 50.f; // our minimum detected tempo (could be a parameter)
-    float t1 = 190.f; // our maximum detected tempo
-
-    //!!! need some way for the host (or at least, the user) to know
-    //!!! that it should only pass a certain amount of
-    //!!! input... e.g. by making the amount configurable
-
-    int p0 = tempo2lag(t1);
-    int p1 = tempo2lag(t0);
-
-    std::map<float, int> candidates;
-
-    for (int i = p0; i <= p1 && i < n/2-1; ++i) {
-
-        if (m_fr[i] > m_fr[i-1] &&
-            m_fr[i] > m_fr[i+1]) {
-            candidates[m_fr[i]] = i;
-        }
-
-        feature.timestamp = m_start +
-            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
-        feature.values[0] = m_fr[i];
-        sprintf(buffer, "%.1f bpm", lag2tempo(i));
-        if (i == p1 || i == n/2-2) feature.label = "";
-        else feature.label = buffer;
-        fs[FilteredACFOutput].push_back(feature);
-    }
-
-//    cerr << "maxpi = " << maxpi << " for tempo " << lag2tempo(maxpi) << " (value = " << maxp << ")" << endl;
-
-    if (candidates.empty()) {
-        cerr << "No tempo candidates!" << endl;
-        return fs;
-    }
-
-    feature.hasTimestamp = true;
-    feature.timestamp = m_start;
-    
-    feature.hasDuration = true;
-    feature.duration = m_lasttime - m_start;
-
-    std::map<float, int>::const_iterator ci = candidates.end();
-    --ci;
-    int maxpi = ci->second;
-
-    if (m_t[maxpi] > 0) {
-        cerr << "*** Using adjusted tempo " << m_t[maxpi] << " instead of lag tempo " << lag2tempo(maxpi) << endl;
-        feature.values[0] = m_t[maxpi];
-    } else {
-        // shouldn't happen -- it would imply that this high value was not a peak!
-        feature.values[0] = lag2tempo(maxpi);
-        cerr << "WARNING: No stored tempo for index " << maxpi << endl;
-    }
-
-    sprintf(buffer, "%.1f bpm", feature.values[0]);
-    feature.label = buffer;
-
-    fs[TempoOutput].push_back(feature);
-
-    feature.values.clear();
-    feature.label = "";
-
-    while (feature.values.size() < 8) {
-//        cerr << "adding tempo value from lag " << ci->second << endl;
-        if (m_t[ci->second] > 0) {
-            feature.values.push_back(m_t[ci->second]);
-        } else {
-            feature.values.push_back(lag2tempo(ci->second));
-        }
-        if (ci == candidates.begin()) break;
-        --ci;
-    }
-
-    fs[CandidatesOutput].push_back(feature);
-    
-    return fs;
-}
diff -r f8b38a017d9a -r 14029eb08472 examples/PercussionOnsetDetector.cpp
--- a/examples/PercussionOnsetDetector.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,285 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "PercussionOnsetDetector.h"
-
-using std::string;
-using std::vector;
-using std::cerr;
-using std::endl;
-
-#include <cmath>
-
-
-PercussionOnsetDetector::PercussionOnsetDetector(float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_stepSize(0),
-    m_blockSize(0),
-    m_threshold(3),
-    m_sensitivity(40),
-    m_priorMagnitudes(0),
-    m_dfMinus1(0),
-    m_dfMinus2(0)
-{
-}
-
-PercussionOnsetDetector::~PercussionOnsetDetector()
-{
-    delete[] m_priorMagnitudes;
-}
-
-string
-PercussionOnsetDetector::getIdentifier() const
-{
-    return "percussiononsets";
-}
-
-string
-PercussionOnsetDetector::getName() const
-{
-    return "Simple Percussion Onset Detector";
-}
-
-string
-PercussionOnsetDetector::getDescription() const
-{
-    return "Detect percussive note onsets by identifying broadband energy rises";
-}
-
-string
-PercussionOnsetDetector::getMaker() const
-{
-    return "Vamp SDK Example Plugins";
-}
-
-int
-PercussionOnsetDetector::getPluginVersion() const
-{
-    return 2;
-}
-
-string
-PercussionOnsetDetector::getCopyright() const
-{
-    return "Code copyright 2006 Queen Mary, University of London, after Dan Barry et al 2005.  Freely redistributable (BSD license)";
-}
-
-size_t
-PercussionOnsetDetector::getPreferredStepSize() const
-{
-    return 0;
-}
-
-size_t
-PercussionOnsetDetector::getPreferredBlockSize() const
-{
-    return 1024;
-}
-
-bool
-PercussionOnsetDetector::initialise(size_t channels, size_t stepSize, size_t blockSize)
-{
-    if (channels < getMinChannelCount() ||
-	channels > getMaxChannelCount()) return false;
-
-    m_stepSize = stepSize;
-    m_blockSize = blockSize;
-
-    m_priorMagnitudes = new float[m_blockSize/2];
-
-    for (size_t i = 0; i < m_blockSize/2; ++i) {
-        m_priorMagnitudes[i] = 0.f;
-    }
-
-    m_dfMinus1 = 0.f;
-    m_dfMinus2 = 0.f;
-
-    return true;
-}
-
-void
-PercussionOnsetDetector::reset()
-{
-    for (size_t i = 0; i < m_blockSize/2; ++i) {
-        m_priorMagnitudes[i] = 0.f;
-    }
-
-    m_dfMinus1 = 0.f;
-    m_dfMinus2 = 0.f;
-}
-
-PercussionOnsetDetector::ParameterList
-PercussionOnsetDetector::getParameterDescriptors() const
-{
-    ParameterList list;
-
-    ParameterDescriptor d;
-    d.identifier = "threshold";
-    d.name = "Energy rise threshold";
-    d.description = "Energy rise within a frequency bin necessary to count toward broadband total";
-    d.unit = "dB";
-    d.minValue = 0;
-    d.maxValue = 20;
-    d.defaultValue = 3;
-    d.isQuantized = false;
-    list.push_back(d);
-
-    d.identifier = "sensitivity";
-    d.name = "Sensitivity";
-    d.description = "Sensitivity of peak detector applied to broadband detection function";
-    d.unit = "%";
-    d.minValue = 0;
-    d.maxValue = 100;
-    d.defaultValue = 40;
-    d.isQuantized = false;
-    list.push_back(d);
-
-    return list;
-}
-
-float
-PercussionOnsetDetector::getParameter(std::string id) const
-{
-    if (id == "threshold") return m_threshold;
-    if (id == "sensitivity") return m_sensitivity;
-    return 0.f;
-}
-
-void
-PercussionOnsetDetector::setParameter(std::string id, float value)
-{
-    if (id == "threshold") {
-        if (value < 0) value = 0;
-        if (value > 20) value = 20;
-        m_threshold = value;
-    } else if (id == "sensitivity") {
-        if (value < 0) value = 0;
-        if (value > 100) value = 100;
-        m_sensitivity = value;
-    }
-}
-
-PercussionOnsetDetector::OutputList
-PercussionOnsetDetector::getOutputDescriptors() const
-{
-    OutputList list;
-
-    OutputDescriptor d;
-    d.identifier = "onsets";
-    d.name = "Onsets";
-    d.description = "Percussive note onset locations";
-    d.unit = "";
-    d.hasFixedBinCount = true;
-    d.binCount = 0;
-    d.hasKnownExtents = false;
-    d.isQuantized = false;
-    d.sampleType = OutputDescriptor::VariableSampleRate;
-    d.sampleRate = m_inputSampleRate;
-    list.push_back(d);
-
-    d.identifier = "detectionfunction";
-    d.name = "Detection Function";
-    d.description = "Broadband energy rise detection function";
-    d.binCount = 1;
-    d.isQuantized = true;
-    d.quantizeStep = 1.0;
-    d.sampleType = OutputDescriptor::OneSamplePerStep;
-    list.push_back(d);
-
-    return list;
-}
-
-PercussionOnsetDetector::FeatureSet
-PercussionOnsetDetector::process(const float *const *inputBuffers,
-                                 Vamp::RealTime ts)
-{
-    if (m_stepSize == 0) {
-	cerr << "ERROR: PercussionOnsetDetector::process: "
-	     << "PercussionOnsetDetector has not been initialised"
-	     << endl;
-	return FeatureSet();
-    }
-
-    int count = 0;
-
-    for (size_t i = 1; i < m_blockSize/2; ++i) {
-
-        float real = inputBuffers[0][i*2];
-        float imag = inputBuffers[0][i*2 + 1];
-
-        float sqrmag = real * real + imag * imag;
-
-        if (m_priorMagnitudes[i] > 0.f) {
-            float diff = 10.f * log10f(sqrmag / m_priorMagnitudes[i]);
-
-//        std::cout << "i=" << i << ", mag=" << mag << ", prior=" << m_priorMagnitudes[i] << ", diff=" << diff << ", threshold=" << m_threshold << std::endl;
-
-            if (diff >= m_threshold) ++count;
-        }
-
-        m_priorMagnitudes[i] = sqrmag;
-    }
-
-    FeatureSet returnFeatures;
-
-    Feature detectionFunction;
-    detectionFunction.hasTimestamp = false;
-    detectionFunction.values.push_back(count);
-    returnFeatures[1].push_back(detectionFunction);
-
-    if (m_dfMinus2 < m_dfMinus1 &&
-        m_dfMinus1 >= count &&
-        m_dfMinus1 > ((100 - m_sensitivity) * m_blockSize) / 200) {
-
-        Feature onset;
-        onset.hasTimestamp = true;
-        onset.timestamp = ts - Vamp::RealTime::frame2RealTime
-            (m_stepSize, int(m_inputSampleRate + 0.5));
-        returnFeatures[0].push_back(onset);
-    }
-
-    m_dfMinus2 = m_dfMinus1;
-    m_dfMinus1 = count;
-
-    return returnFeatures;
-}
-
-PercussionOnsetDetector::FeatureSet
-PercussionOnsetDetector::getRemainingFeatures()
-{
-    return FeatureSet();
-}
-
diff -r f8b38a017d9a -r 14029eb08472 examples/SpectralCentroid.cpp
--- a/examples/SpectralCentroid.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,196 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "SpectralCentroid.h"
-
-using std::string;
-using std::vector;
-using std::cerr;
-using std::endl;
-
-#include <math.h>
-
-#ifdef WIN32
-#define isnan(x) false
-#define isinf(x) false
-#endif
-
-SpectralCentroid::SpectralCentroid(float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_stepSize(0),
-    m_blockSize(0)
-{
-}
-
-SpectralCentroid::~SpectralCentroid()
-{
-}
-
-string
-SpectralCentroid::getIdentifier() const
-{
-    return "spectralcentroid";
-}
-
-string
-SpectralCentroid::getName() const
-{
-    return "Spectral Centroid";
-}
-
-string
-SpectralCentroid::getDescription() const
-{
-    return "Calculate the centroid frequency of the spectrum of the input signal";
-}
-
-string
-SpectralCentroid::getMaker() const
-{
-    return "Vamp SDK Example Plugins";
-}
-
-int
-SpectralCentroid::getPluginVersion() const
-{
-    return 2;
-}
-
-string
-SpectralCentroid::getCopyright() const
-{
-    return "Freely redistributable (BSD license)";
-}
-
-bool
-SpectralCentroid::initialise(size_t channels, size_t stepSize, size_t blockSize)
-{
-    if (channels < getMinChannelCount() ||
-	channels > getMaxChannelCount()) return false;
-
-    m_stepSize = stepSize;
-    m_blockSize = blockSize;
-
-    return true;
-}
-
-void
-SpectralCentroid::reset()
-{
-}
-
-SpectralCentroid::OutputList
-SpectralCentroid::getOutputDescriptors() const
-{
-    OutputList list;
-
-    OutputDescriptor d;
-    d.identifier = "logcentroid";
-    d.name = "Log Frequency Centroid";
-    d.description = "Centroid of the log weighted frequency spectrum";
-    d.unit = "Hz";
-    d.hasFixedBinCount = true;
-    d.binCount = 1;
-    d.hasKnownExtents = false;
-    d.isQuantized = false;
-    d.sampleType = OutputDescriptor::OneSamplePerStep;
-    list.push_back(d);
-
-    d.identifier = "linearcentroid";
-    d.name = "Linear Frequency Centroid";
-    d.description = "Centroid of the linear frequency spectrum";
-    list.push_back(d);
-
-    return list;
-}
-
-//static int scount = 0;
-
-SpectralCentroid::FeatureSet
-SpectralCentroid::process(const float *const *inputBuffers, Vamp::RealTime timestamp)
-{
-    if (m_stepSize == 0) {
-	cerr << "ERROR: SpectralCentroid::process: "
-	     << "SpectralCentroid has not been initialised"
-	     << endl;
-	return FeatureSet();
-    }
-
-//    std::cerr << "SpectralCentroid::process: count = " << scount++ << ", timestamp = " << timestamp << ", total power = ";
-
-    double numLin = 0.0, numLog = 0.0, denom = 0.0;
-
-    for (size_t i = 1; i <= m_blockSize/2; ++i) {
-	double freq = (double(i) * m_inputSampleRate) / m_blockSize;
-	double real = inputBuffers[0][i*2];
-	double imag = inputBuffers[0][i*2 + 1];
-	double power = sqrt(real * real + imag * imag) / (m_blockSize/2);
-	numLin += freq * power;
-        numLog += log10f(freq) * power;
-	denom += power;
-    }
-
-//    std::cerr << denom << std::endl;
-
-    FeatureSet returnFeatures;
-
-    if (denom != 0.0) {
-	float centroidLin = float(numLin / denom);
-	float centroidLog = powf(10, float(numLog / denom));
-
-	Feature feature;
-	feature.hasTimestamp = false;
-    if (!isnan(centroidLog) && !isinf(centroidLog)) {
-        feature.values.push_back(centroidLog);
-    }
-	returnFeatures[0].push_back(feature);
-
-    feature.values.clear();
-    if (!isnan(centroidLin) && !isinf(centroidLin)) {
-        feature.values.push_back(centroidLin);
-    }
-	returnFeatures[1].push_back(feature);
-    }
-
-    return returnFeatures;
-}
-
-SpectralCentroid::FeatureSet
-SpectralCentroid::getRemainingFeatures()
-{
-    return FeatureSet();
-}
-
diff -r f8b38a017d9a -r 14029eb08472 examples/ZeroCrossing.cpp
--- a/examples/ZeroCrossing.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,206 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "ZeroCrossing.h"
-
-using std::string;
-using std::vector;
-using std::cerr;
-using std::endl;
-
-#include <cmath>
-
-ZeroCrossing::ZeroCrossing(float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_stepSize(0),
-    m_previousSample(0.0f)
-{
-}
-
-ZeroCrossing::~ZeroCrossing()
-{
-}
-
-string
-ZeroCrossing::getIdentifier() const
-{
-    return "zerocrossing";
-}
-
-string
-ZeroCrossing::getName() const
-{
-    return "Zero Crossings";
-}
-
-string
-ZeroCrossing::getDescription() const
-{
-    return "Detect and count zero crossing points";
-}
-
-string
-ZeroCrossing::getMaker() const
-{
-    return "Vamp SDK Example Plugins";
-}
-
-int
-ZeroCrossing::getPluginVersion() const
-{
-    return 2;
-}
-
-string
-ZeroCrossing::getCopyright() const
-{
-    return "Freely redistributable (BSD license)";
-}
-
-bool
-ZeroCrossing::initialise(size_t channels, size_t stepSize, size_t blockSize)
-{
-    if (channels < getMinChannelCount() ||
-	channels > getMaxChannelCount()) return false;
-
-    m_stepSize = std::min(stepSize, blockSize);
-
-    return true;
-}
-
-void
-ZeroCrossing::reset()
-{
-    m_previousSample = 0.0f;
-}
-
-ZeroCrossing::OutputList
-ZeroCrossing::getOutputDescriptors() const
-{
-    OutputList list;
-
-    OutputDescriptor zc;
-    zc.identifier = "counts";
-    zc.name = "Zero Crossing Counts";
-    zc.description = "The number of zero crossing points per processing block";
-    zc.unit = "crossings";
-    zc.hasFixedBinCount = true;
-    zc.binCount = 1;
-    zc.hasKnownExtents = false;
-    zc.isQuantized = true;
-    zc.quantizeStep = 1.0;
-    zc.sampleType = OutputDescriptor::OneSamplePerStep;
-    list.push_back(zc);
-
-    zc.identifier = "zerocrossings";
-    zc.name = "Zero Crossings";
-    zc.description = "The locations of zero crossing points";
-    zc.unit = "";
-    zc.hasFixedBinCount = true;
-    zc.binCount = 0;
-    zc.sampleType = OutputDescriptor::VariableSampleRate;
-    zc.sampleRate = m_inputSampleRate;
-    list.push_back(zc);
-
-    return list;
-}
-
-//static int scount = 0;
-
-ZeroCrossing::FeatureSet
-ZeroCrossing::process(const float *const *inputBuffers,
-                      Vamp::RealTime timestamp)
-{
-    if (m_stepSize == 0) {
-	cerr << "ERROR: ZeroCrossing::process: "
-	     << "ZeroCrossing has not been initialised"
-	     << endl;
-	return FeatureSet();
-    }
-
-//    std::cerr << "ZeroCrossing::process: count = " << scount++ << ", timestamp = " << timestamp << ", rms = ";
-
-    float prev = m_previousSample;
-    size_t count = 0;
-
-    FeatureSet returnFeatures;
-
-//    double acc = 0.0;
-
-    for (size_t i = 0; i < m_stepSize; ++i) {
-
-	float sample = inputBuffers[0][i];
-	bool crossing = false;
-
-	if (sample <= 0.0) {
-	    if (prev > 0.0) crossing = true;
-	} else if (sample > 0.0) {
-	    if (prev <= 0.0) crossing = true;
-	}
-
-	if (crossing) {
-	    ++count; 
-	    Feature feature;
-	    feature.hasTimestamp = true;
-	    feature.timestamp = timestamp +
-		Vamp::RealTime::frame2RealTime(i, (size_t)m_inputSampleRate);
-	    returnFeatures[1].push_back(feature);
-	}
-
-//        acc += sample * sample;
-
-	prev = sample;
-    }
-
-//    acc /= m_stepSize;
-//    std::cerr << sqrt(acc) << std::endl;
-
-    m_previousSample = prev;
-
-    Feature feature;
-    feature.hasTimestamp = false;
-    feature.values.push_back(count);
-
-    returnFeatures[0].push_back(feature);
-    return returnFeatures;
-}
-
-ZeroCrossing::FeatureSet
-ZeroCrossing::getRemainingFeatures()
-{
-    return FeatureSet();
-}
-
diff -r f8b38a017d9a -r 14029eb08472 examples/plugins.cpp
--- a/examples/plugins.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,66 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "vamp/vamp.h"
-#include "vamp-sdk/PluginAdapter.h"
-
-#include "ZeroCrossing.h"
-#include "SpectralCentroid.h"
-#include "PercussionOnsetDetector.h"
-#include "FixedTempoEstimator.h"
-#include "AmplitudeFollower.h"
-
-static Vamp::PluginAdapter<ZeroCrossing> zeroCrossingAdapter;
-static Vamp::PluginAdapter<SpectralCentroid> spectralCentroidAdapter;
-static Vamp::PluginAdapter<PercussionOnsetDetector> percussionOnsetAdapter;
-static Vamp::PluginAdapter<FixedTempoEstimator> fixedTempoAdapter;
-static Vamp::PluginAdapter<AmplitudeFollower> amplitudeAdapter;
-
-const VampPluginDescriptor *vampGetPluginDescriptor(unsigned int version,
-                                                    unsigned int index)
-{
-    if (version < 1) return 0;
-
-    switch (index) {
-    case  0: return zeroCrossingAdapter.getDescriptor();
-    case  1: return spectralCentroidAdapter.getDescriptor();
-    case  2: return percussionOnsetAdapter.getDescriptor();
-    case  3: return amplitudeAdapter.getDescriptor();
-    case  4: return fixedTempoAdapter.getDescriptor();
-    default: return 0;
-    }
-}
-
diff -r f8b38a017d9a -r 14029eb08472 host/vamp-simple-host.cpp
--- a/host/vamp-simple-host.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,644 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-    FFT code from Don Cross's public domain FFT implementation.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "vamp-sdk/PluginHostAdapter.h"
-#include "vamp-sdk/hostext/PluginInputDomainAdapter.h"
-#include "vamp-sdk/hostext/PluginLoader.h"
-#include "vamp/vamp.h"
-
-#include <iostream>
-#include <fstream>
-#include <set>
-#include <sndfile.h>
-
-#include <cstring>
-#include <cstdlib>
-
-#include "system.h"
-
-#include <cmath>
-
-using namespace std;
-
-using Vamp::Plugin;
-using Vamp::PluginHostAdapter;
-using Vamp::RealTime;
-using Vamp::HostExt::PluginLoader;
-using Vamp::HostExt::PluginWrapper;
-using Vamp::HostExt::PluginInputDomainAdapter;
-
-#define HOST_VERSION "1.3"
-
-enum Verbosity {
-    PluginIds,
-    PluginOutputIds,
-    PluginInformation
-};
-
-void printFeatures(int, int, int, Plugin::FeatureSet, ofstream *, bool frames);
-void transformInput(float *, size_t);
-void fft(unsigned int, bool, double *, double *, double *, double *);
-void printPluginPath(bool verbose);
-void printPluginCategoryList();
-void enumeratePlugins(Verbosity);
-void listPluginsInLibrary(string soname);
-int runPlugin(string myname, string soname, string id, string output,
-              int outputNo, string inputFile, string outfilename, bool frames);
-
-void usage(const char *name)
-{
-    cerr << "\n"
-         << name << ": A simple Vamp plugin host.\n\n"
-        "Centre for Digital Music, Queen Mary, University of London.\n"
-        "Copyright 2006-2007 Chris Cannam and QMUL.\n"
-        "Freely redistributable; published under a BSD-style license.\n\n"
-        "Usage:\n\n"
-        "  " << name << " [-s] pluginlibrary[." << PLUGIN_SUFFIX << "]:plugin[:output] file.wav [-o out.txt]\n"
-        "  " << name << " [-s] pluginlibrary[." << PLUGIN_SUFFIX << "]:plugin file.wav [outputno] [-o out.txt]\n\n"
-        "    -- Load plugin id \"plugin\" from \"pluginlibrary\" and run it on the\n"
-        "       audio data in \"file.wav\", retrieving the named \"output\", or output\n"
-        "       number \"outputno\" (the first output by default) and dumping it to\n"
-        "       standard output, or to \"out.txt\" if the -o option is given.\n\n"
-        "       \"pluginlibrary\" should be a library name, not a file path; the\n"
-        "       standard Vamp library search path will be used to locate it.  If\n"
-        "       a file path is supplied, the directory part(s) will be ignored.\n\n"
-        "       If the -s option is given, results will be labelled with the audio\n"
-        "       sample frame at which they occur. Otherwise, they will be labelled\n"
-        "       with time in seconds.\n\n"
-        "  " << name << " -l\n\n"
-        "    -- List the plugin libraries and Vamp plugins in the library search path\n"
-        "       in a verbose human-readable format.\n\n"
-        "  " << name << " --list-ids\n\n"
-        "    -- List the plugins in the search path in a terse machine-readable format,\n"
-        "       in the form vamp:soname:identifier.\n\n"
-        "  " << name << " --list-outputs\n\n"
-        "    -- List the outputs for plugins in the search path in a machine-readable\n"
-        "       format, in the form vamp:soname:identifier:output.\n\n"
-        "  " << name << " --list-by-category\n\n"
-        "    -- List the plugins as a plugin index by category, in a machine-readable\n"
-        "       format.  The format may change in future releases.\n\n"
-        "  " << name << " -p\n\n"
-        "    -- Print out the Vamp library search path.\n\n"
-        "  " << name << " -v\n\n"
-        "    -- Display version information only.\n"
-         << endl;
-    exit(2);
-}
-
-int main(int argc, char **argv)
-{
-    char *scooter = argv[0];
-    char *name = 0;
-    while (scooter && *scooter) {
-        if (*scooter == '/' || *scooter == '\\') name = ++scooter;
-        else ++scooter;
-    }
-    if (!name || !*name) name = argv[0];
-    
-    if (argc < 2) usage(name);
-
-    if (argc == 2) {
-
-        if (!strcmp(argv[1], "-v")) {
-
-            cout << "Simple Vamp plugin host version: " << HOST_VERSION << endl
-                 << "Vamp API version: " << VAMP_API_VERSION << endl
-                 << "Vamp SDK version: " << VAMP_SDK_VERSION << endl;
-            return 0;
-
-        } else if (!strcmp(argv[1], "-l")) {
-
-            printPluginPath(true);
-            enumeratePlugins(PluginInformation);
-            return 0;
-
-        } else if (!strcmp(argv[1], "-p")) {
-
-            printPluginPath(false);
-            return 0;
-
-        } else if (!strcmp(argv[1], "--list-ids")) {
-
-            enumeratePlugins(PluginIds);
-            return 0;
-
-        } else if (!strcmp(argv[1], "--list-outputs")) {
-
-            enumeratePlugins(PluginOutputIds);
-            return 0;
-
-        } else if (!strcmp(argv[1], "--list-by-category")) {
-
-            printPluginCategoryList();
-            return 0;
-
-        } else usage(name);
-    }
-
-    if (argc < 3) usage(name);
-
-    bool useFrames = false;
-    
-    int base = 1;
-    if (!strcmp(argv[1], "-s")) {
-        useFrames = true;
-        base = 2;
-    }
-
-    string soname = argv[base];
-    string wavname = argv[base+1];
-    string plugid = "";
-    string output = "";
-    int outputNo = -1;
-    string outfilename;
-
-    if (argc >= base+3) {
-
-        int idx = base+2;
-
-        if (isdigit(*argv[idx])) {
-            outputNo = atoi(argv[idx++]);
-        }
-
-        if (argc == idx + 2) {
-            if (!strcmp(argv[idx], "-o")) {
-                outfilename = argv[idx+1];
-            } else usage(name);
-        } else if (argc != idx) {
-            (usage(name));
-        }
-    }
-
-    cerr << endl << name << ": Running..." << endl;
-
-    cerr << "Reading file: \"" << wavname << "\", writing to ";
-    if (outfilename == "") {
-        cerr << "standard output" << endl;
-    } else {
-        cerr << "\"" << outfilename << "\"" << endl;
-    }
-
-    string::size_type sep = soname.find(':');
-
-    if (sep != string::npos) {
-        plugid = soname.substr(sep + 1);
-        soname = soname.substr(0, sep);
-
-        sep = plugid.find(':');
-        if (sep != string::npos) {
-            output = plugid.substr(sep + 1);
-            plugid = plugid.substr(0, sep);
-        }
-    }
-
-    if (plugid == "") {
-        usage(name);
-    }
-
-    if (output != "" && outputNo != -1) {
-        usage(name);
-    }
-
-    if (output == "" && outputNo == -1) {
-        outputNo = 0;
-    }
-
-    return runPlugin(name, soname, plugid, output, outputNo,
-                     wavname, outfilename, useFrames);
-}
-
-
-int runPlugin(string myname, string soname, string id,
-              string output, int outputNo, string wavname,
-              string outfilename, bool useFrames)
-{
-    PluginLoader *loader = PluginLoader::getInstance();
-
-    PluginLoader::PluginKey key = loader->composePluginKey(soname, id);
-    
-    SNDFILE *sndfile;
-    SF_INFO sfinfo;
-    memset(&sfinfo, 0, sizeof(SF_INFO));
-
-    sndfile = sf_open(wavname.c_str(), SFM_READ, &sfinfo);
-    if (!sndfile) {
-	cerr << myname << ": ERROR: Failed to open input file \""
-             << wavname << "\": " << sf_strerror(sndfile) << endl;
-	return 1;
-    }
-
-    ofstream *out = 0;
-    if (outfilename != "") {
-        out = new ofstream(outfilename.c_str(), ios::out);
-        if (!*out) {
-            cerr << myname << ": ERROR: Failed to open output file \""
-                 << outfilename << "\" for writing" << endl;
-            delete out;
-            return 1;
-        }
-    }
-
-    Plugin *plugin = loader->loadPlugin
-        (key, sfinfo.samplerate, PluginLoader::ADAPT_ALL_SAFE);
-    if (!plugin) {
-        cerr << myname << ": ERROR: Failed to load plugin \"" << id
-             << "\" from library \"" << soname << "\"" << endl;
-        sf_close(sndfile);
-        if (out) {
-            out->close();
-            delete out;
-        }
-        return 1;
-    }
-
-    cerr << "Running plugin: \"" << plugin->getIdentifier() << "\"..." << endl;
-
-    int blockSize = plugin->getPreferredBlockSize();
-    int stepSize = plugin->getPreferredStepSize();
-
-    if (blockSize == 0) {
-        blockSize = 1024;
-    }
-    if (stepSize == 0) {
-        if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
-            stepSize = blockSize/2;
-        } else {
-            stepSize = blockSize;
-        }
-    } else if (stepSize > blockSize) {
-        cerr << "WARNING: stepSize " << stepSize << " > blockSize " << blockSize << ", resetting blockSize to ";
-        if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
-            blockSize = stepSize * 2;
-        } else {
-            blockSize = stepSize;
-        }
-        cerr << blockSize << endl;
-    }
-
-    int channels = sfinfo.channels;
-
-    float *filebuf = new float[blockSize * channels];
-    float **plugbuf = new float*[channels];
-    for (int c = 0; c < channels; ++c) plugbuf[c] = new float[blockSize + 2];
-
-    cerr << "Using block size = " << blockSize << ", step size = "
-              << stepSize << endl;
-
-    int minch = plugin->getMinChannelCount();
-    int maxch = plugin->getMaxChannelCount();
-    cerr << "Plugin accepts " << minch << " -> " << maxch << " channel(s)" << endl;
-    cerr << "Sound file has " << channels << " (will mix/augment if necessary)" << endl;
-
-    Plugin::OutputList outputs = plugin->getOutputDescriptors();
-    Plugin::OutputDescriptor od;
-
-    int returnValue = 1;
-    int progress = 0;
-
-    RealTime rt;
-    PluginWrapper *wrapper = 0;
-    RealTime adjustment = RealTime::zeroTime;
-
-    if (outputs.empty()) {
-	cerr << "ERROR: Plugin has no outputs!" << endl;
-        goto done;
-    }
-
-    if (outputNo < 0) {
-
-        for (size_t oi = 0; oi < outputs.size(); ++oi) {
-            if (outputs[oi].identifier == output) {
-                outputNo = oi;
-                break;
-            }
-        }
-
-        if (outputNo < 0) {
-            cerr << "ERROR: Non-existent output \"" << output << "\" requested" << endl;
-            goto done;
-        }
-
-    } else {
-
-        if (int(outputs.size()) <= outputNo) {
-            cerr << "ERROR: Output " << outputNo << " requested, but plugin has only " << outputs.size() << " output(s)" << endl;
-            goto done;
-        }        
-    }
-
-    od = outputs[outputNo];
-    cerr << "Output is: \"" << od.identifier << "\"" << endl;
-
-    if (!plugin->initialise(channels, stepSize, blockSize)) {
-        cerr << "ERROR: Plugin initialise (channels = " << channels
-             << ", stepSize = " << stepSize << ", blockSize = "
-             << blockSize << ") failed." << endl;
-        goto done;
-    }
-
-    wrapper = dynamic_cast<PluginWrapper *>(plugin);
-    if (wrapper) {
-        PluginInputDomainAdapter *ida =
-            wrapper->getWrapper<PluginInputDomainAdapter>();
-        if (ida) adjustment = ida->getTimestampAdjustment();
-    }
-
-    for (size_t i = 0; i < sfinfo.frames; i += stepSize) {
-
-        int count;
-
-        if (sf_seek(sndfile, i, SEEK_SET) < 0) {
-            cerr << "ERROR: sf_seek failed: " << sf_strerror(sndfile) << endl;
-            break;
-        }
-        
-        if ((count = sf_readf_float(sndfile, filebuf, blockSize)) < 0) {
-            cerr << "ERROR: sf_readf_float failed: " << sf_strerror(sndfile) << endl;
-            break;
-        }
-
-        for (int c = 0; c < channels; ++c) {
-            int j = 0;
-            while (j < count) {
-                plugbuf[c][j] = filebuf[j * sfinfo.channels + c];
-                ++j;
-            }
-            while (j < blockSize) {
-                plugbuf[c][j] = 0.0f;
-                ++j;
-            }
-        }
-
-        rt = RealTime::frame2RealTime(i, sfinfo.samplerate);
-
-        printFeatures
-            (RealTime::realTime2Frame(rt + adjustment, sfinfo.samplerate),
-             sfinfo.samplerate, outputNo, plugin->process(plugbuf, rt),
-             out, useFrames);
-
-        int pp = progress;
-        progress = lrintf((float(i) / sfinfo.frames) * 100.f);
-        if (progress != pp && out) {
-            cerr << "\r" << progress << "%";
-        }
-    }
-    if (out) cerr << "\rDone" << endl;
-
-    rt = RealTime::frame2RealTime(sfinfo.frames, sfinfo.samplerate);
-
-    printFeatures(RealTime::realTime2Frame(rt + adjustment, sfinfo.samplerate),
-                  sfinfo.samplerate, outputNo,
-                  plugin->getRemainingFeatures(), out, useFrames);
-
-    returnValue = 0;
-
-done:
-    delete plugin;
-    if (out) {
-        out->close();
-        delete out;
-    }
-    sf_close(sndfile);
-    return returnValue;
-}
-
-void
-printFeatures(int frame, int sr, int output,
-              Plugin::FeatureSet features, ofstream *out, bool useFrames)
-{
-    for (unsigned int i = 0; i < features[output].size(); ++i) {
-
-        if (useFrames) {
-
-            int displayFrame = frame;
-
-            if (features[output][i].hasTimestamp) {
-                displayFrame = RealTime::realTime2Frame
-                    (features[output][i].timestamp, sr);
-            }
-
-            (out ? *out : cout) << displayFrame;
-
-            if (features[output][i].hasDuration) {
-                displayFrame = RealTime::realTime2Frame
-                    (features[output][i].duration, sr);
-                (out ? *out : cout) << "," << displayFrame;
-            }
-
-            (out ? *out : cout)  << ":";
-
-        } else {
-
-            RealTime rt = RealTime::frame2RealTime(frame, sr);
-
-            if (features[output][i].hasTimestamp) {
-                rt = features[output][i].timestamp;
-            }
-
-            (out ? *out : cout) << rt.toString();
-
-            if (features[output][i].hasDuration) {
-                rt = features[output][i].duration;
-                (out ? *out : cout) << "," << rt.toString();
-            }
-
-            (out ? *out : cout) << ":";
-        }
-
-        for (unsigned int j = 0; j < features[output][i].values.size(); ++j) {
-            (out ? *out : cout) << " " << features[output][i].values[j];
-        }
-
-        (out ? *out : cout) << endl;
-    }
-}
-
-void
-printPluginPath(bool verbose)
-{
-    if (verbose) {
-        cout << "\nVamp plugin search path: ";
-    }
-
-    vector<string> path = PluginHostAdapter::getPluginPath();
-    for (size_t i = 0; i < path.size(); ++i) {
-        if (verbose) {
-            cout << "[" << path[i] << "]";
-        } else {
-            cout << path[i] << endl;
-        }
-    }
-
-    if (verbose) cout << endl;
-}
-
-void
-enumeratePlugins(Verbosity verbosity)
-{
-    PluginLoader *loader = PluginLoader::getInstance();
-
-    if (verbosity == PluginInformation) {
-        cout << "\nVamp plugin libraries found in search path:" << endl;
-    }
-
-    vector<PluginLoader::PluginKey> plugins = loader->listPlugins();
-    typedef multimap<string, PluginLoader::PluginKey>
-        LibraryMap;
-    LibraryMap libraryMap;
-
-    for (size_t i = 0; i < plugins.size(); ++i) {
-        string path = loader->getLibraryPathForPlugin(plugins[i]);
-        libraryMap.insert(LibraryMap::value_type(path, plugins[i]));
-    }
-
-    string prevPath = "";
-    int index = 0;
-
-    for (LibraryMap::iterator i = libraryMap.begin();
-         i != libraryMap.end(); ++i) {
-        
-        string path = i->first;
-        PluginLoader::PluginKey key = i->second;
-
-        if (path != prevPath) {
-            prevPath = path;
-            index = 0;
-            if (verbosity == PluginInformation) {
-                cout << "\n  " << path << ":" << endl;
-            }
-        }
-
-        Plugin *plugin = loader->loadPlugin(key, 48000);
-        if (plugin) {
-
-            char c = char('A' + index);
-            if (c > 'Z') c = char('a' + (index - 26));
-
-            if (verbosity == PluginInformation) {
-
-                cout << "    [" << c << "] [v"
-                     << plugin->getVampApiVersion() << "] "
-                     << plugin->getName() << ", \""
-                     << plugin->getIdentifier() << "\"" << " ["
-                     << plugin->getMaker() << "]" << endl;
-
-                PluginLoader::PluginCategoryHierarchy category =
-                    loader->getPluginCategory(key);
-
-                if (!category.empty()) {
-                    cout << "       ";
-                    for (size_t ci = 0; ci < category.size(); ++ci) {
-                        cout << " > " << category[ci];
-                    }
-                    cout << endl;
-                }
-
-                if (plugin->getDescription() != "") {
-                    cout << "        - " << plugin->getDescription() << endl;
-                }
-
-            } else if (verbosity == PluginIds) {
-                cout << "vamp:" << key << endl;
-            }
-            
-            Plugin::OutputList outputs =
-                plugin->getOutputDescriptors();
-
-            if (outputs.size() > 1 || verbosity == PluginOutputIds) {
-                for (size_t j = 0; j < outputs.size(); ++j) {
-                    if (verbosity == PluginInformation) {
-                        cout << "         (" << j << ") "
-                             << outputs[j].name << ", \""
-                             << outputs[j].identifier << "\"" << endl;
-                        if (outputs[j].description != "") {
-                            cout << "             - " 
-                                 << outputs[j].description << endl;
-                        }
-                    } else if (verbosity == PluginOutputIds) {
-                        cout << "vamp:" << key << ":" << outputs[j].identifier << endl;
-                    }
-                }
-            }
-
-            ++index;
-
-            delete plugin;
-        }
-    }
-
-    if (verbosity == PluginInformation) {
-        cout << endl;
-    }
-}
-
-void
-printPluginCategoryList()
-{
-    PluginLoader *loader = PluginLoader::getInstance();
-
-    vector<PluginLoader::PluginKey> plugins = loader->listPlugins();
-
-    set<string> printedcats;
-
-    for (size_t i = 0; i < plugins.size(); ++i) {
-
-        PluginLoader::PluginKey key = plugins[i];
-        
-        PluginLoader::PluginCategoryHierarchy category =
-            loader->getPluginCategory(key);
-
-        Plugin *plugin = loader->loadPlugin(key, 48000);
-        if (!plugin) continue;
-
-        string catstr = "";
-
-        if (category.empty()) catstr = '|';
-        else {
-            for (size_t j = 0; j < category.size(); ++j) {
-                catstr += category[j];
-                catstr += '|';
-                if (printedcats.find(catstr) == printedcats.end()) {
-                    std::cout << catstr << std::endl;
-                    printedcats.insert(catstr);
-                }
-            }
-        }
-
-        std::cout << catstr << key << ":::" << plugin->getName() << ":::" << plugin->getMaker() << ":::" << plugin->getDescription() << std::endl;
-    }
-}
-
diff -r f8b38a017d9a -r 14029eb08472 src/AmplitudeFollower.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/AmplitudeFollower.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,247 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Dan Stowell.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "AmplitudeFollower.h"
+
+#include <cmath>
+
+#include <string>
+#include <vector>
+#include <iostream>
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+/**
+ * An implementation of SuperCollider's amplitude-follower algorithm
+ * as a simple Vamp plugin.
+ */
+
+AmplitudeFollower::AmplitudeFollower(float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_stepSize(0),
+    m_previn(0.0f),
+    m_clampcoef(0.01f),
+    m_relaxcoef(0.01f)
+{
+}
+
+AmplitudeFollower::~AmplitudeFollower()
+{
+}
+
+string
+AmplitudeFollower::getIdentifier() const
+{
+    return "amplitudefollower";
+}
+
+string
+AmplitudeFollower::getName() const
+{
+    return "Amplitude Follower";
+}
+
+string
+AmplitudeFollower::getDescription() const
+{
+    return "Track the amplitude of the audio signal";
+}
+
+string
+AmplitudeFollower::getMaker() const
+{
+    return "Vamp SDK Example Plugins";
+}
+
+int
+AmplitudeFollower::getPluginVersion() const
+{
+    return 1;
+}
+
+string
+AmplitudeFollower::getCopyright() const
+{
+    return "Code copyright 2006 Dan Stowell; method from SuperCollider.  Freely redistributable (BSD license)";
+}
+
+bool
+AmplitudeFollower::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = std::min(stepSize, blockSize);
+	
+    // Translate the coefficients 
+    // from their "convenient" 60dB convergence-time values
+    // to real coefficients
+    m_clampcoef = m_clampcoef==0.0 ? 0.0 : exp(log(0.1)/(m_clampcoef * m_inputSampleRate));
+    m_relaxcoef = m_relaxcoef==0.0 ? 0.0 : exp(log(0.1)/(m_relaxcoef * m_inputSampleRate));
+
+    return true;
+}
+
+void
+AmplitudeFollower::reset()
+{
+    m_previn = 0.0f;
+}
+
+AmplitudeFollower::OutputList
+AmplitudeFollower::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor sca;
+    sca.identifier = "amplitude";
+    sca.name = "Amplitude";
+    sca.description = "";
+    sca.unit = "V";
+    sca.hasFixedBinCount = true;
+    sca.binCount = 1;
+    sca.hasKnownExtents = false;
+    sca.isQuantized = false;
+    sca.sampleType = OutputDescriptor::OneSamplePerStep;
+    list.push_back(sca);
+
+    return list;
+}
+
+AmplitudeFollower::ParameterList
+AmplitudeFollower::getParameterDescriptors() const
+{
+    ParameterList list;
+	
+    ParameterDescriptor att;
+    att.identifier = "attack";
+    att.name = "Attack time";
+    att.description = "";
+    att.unit = "s";
+    att.minValue = 0.0f;
+    att.maxValue = 1.f;
+    att.defaultValue = 0.01f;
+    att.isQuantized = false;
+    
+    list.push_back(att);
+    
+    ParameterDescriptor dec;
+    dec.identifier = "release";
+    dec.name = "Release time";
+    dec.description = "";
+    dec.unit = "s";
+    dec.minValue = 0.0f;
+    dec.maxValue = 1.f;
+    dec.defaultValue = 0.01f;
+    dec.isQuantized = false;
+    
+    list.push_back(dec);
+    
+    return list;
+}
+
+void AmplitudeFollower::setParameter(std::string paramid, float newval)
+{
+    if (paramid == "attack") {
+        m_clampcoef = newval;
+    } else if (paramid == "release") {
+        m_relaxcoef = newval;
+    }
+}
+
+float AmplitudeFollower::getParameter(std::string paramid) const
+{
+    if (paramid == "attack") {
+        return m_clampcoef;
+    } else if (paramid == "release") {
+        return m_relaxcoef;
+    }
+
+    return 0.0f;
+}
+
+AmplitudeFollower::FeatureSet
+AmplitudeFollower::process(const float *const *inputBuffers,
+                           Vamp::RealTime timestamp)
+{
+    if (m_stepSize == 0) {
+	cerr << "ERROR: AmplitudeFollower::process: "
+	     << "AmplitudeFollower has not been initialised"
+	     << endl;
+	return FeatureSet();
+    }
+
+    float previn = m_previn;
+
+    FeatureSet returnFeatures;
+	
+    float val;
+    float peak = 0.0f;
+
+    for (size_t i = 0; i < m_stepSize; ++i) {
+
+        val = fabs(inputBuffers[0][i]);
+		
+        if (val < previn) {
+            val = val + (previn - val) * m_relaxcoef;
+        } else {
+            val = val + (previn - val) * m_clampcoef;
+        }
+
+        if (val > peak) peak = val;
+        previn = val;
+    }
+
+    m_previn = previn;
+
+    // Now store the "feature" (peak amp) for this sample
+    Feature feature;
+    feature.hasTimestamp = false;
+    feature.values.push_back(peak);
+    returnFeatures[0].push_back(feature);
+
+    return returnFeatures;
+}
+
+AmplitudeFollower::FeatureSet
+AmplitudeFollower::getRemainingFeatures()
+{
+    return FeatureSet();
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/FixedTempoEstimator.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/FixedTempoEstimator.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,534 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006-2008 Chris Cannam and QMUL.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "FixedTempoEstimator.h"
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+using Vamp::RealTime;
+
+#include <cmath>
+
+
+FixedTempoEstimator::FixedTempoEstimator(float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_stepSize(0),
+    m_blockSize(0),
+    m_priorMagnitudes(0),
+    m_df(0),
+    m_r(0),
+    m_fr(0),
+    m_t(0),
+    m_n(0)
+{
+}
+
+FixedTempoEstimator::~FixedTempoEstimator()
+{
+    delete[] m_priorMagnitudes;
+    delete[] m_df;
+    delete[] m_r;
+    delete[] m_fr;
+    delete[] m_t;
+}
+
+string
+FixedTempoEstimator::getIdentifier() const
+{
+    return "fixedtempo";
+}
+
+string
+FixedTempoEstimator::getName() const
+{
+    return "Simple Fixed Tempo Estimator";
+}
+
+string
+FixedTempoEstimator::getDescription() const
+{
+    return "Study a short section of audio and estimate its tempo, assuming the tempo is constant";
+}
+
+string
+FixedTempoEstimator::getMaker() const
+{
+    return "Vamp SDK Example Plugins";
+}
+
+int
+FixedTempoEstimator::getPluginVersion() const
+{
+    return 1;
+}
+
+string
+FixedTempoEstimator::getCopyright() const
+{
+    return "Code copyright 2008 Queen Mary, University of London.  Freely redistributable (BSD license)";
+}
+
+size_t
+FixedTempoEstimator::getPreferredStepSize() const
+{
+    return 64;
+}
+
+size_t
+FixedTempoEstimator::getPreferredBlockSize() const
+{
+    return 256;
+}
+
+bool
+FixedTempoEstimator::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = stepSize;
+    m_blockSize = blockSize;
+
+    float dfLengthSecs = 10.f;
+    m_dfsize = (dfLengthSecs * m_inputSampleRate) / m_stepSize;
+
+    m_priorMagnitudes = new float[m_blockSize/2];
+    m_df = new float[m_dfsize];
+
+    for (size_t i = 0; i < m_blockSize/2; ++i) {
+        m_priorMagnitudes[i] = 0.f;
+    }
+    for (size_t i = 0; i < m_dfsize; ++i) {
+        m_df[i] = 0.f;
+    }
+
+    m_n = 0;
+
+    return true;
+}
+
+void
+FixedTempoEstimator::reset()
+{
+    cerr << "FixedTempoEstimator: reset called" << endl;
+
+    if (!m_priorMagnitudes) return;
+
+    cerr << "FixedTempoEstimator: resetting" << endl;
+
+    for (size_t i = 0; i < m_blockSize/2; ++i) {
+        m_priorMagnitudes[i] = 0.f;
+    }
+    for (size_t i = 0; i < m_dfsize; ++i) {
+        m_df[i] = 0.f;
+    }
+
+    delete[] m_r;
+    m_r = 0;
+
+    delete[] m_fr; 
+    m_fr = 0;
+
+    delete[] m_t; 
+    m_t = 0;
+
+    m_n = 0;
+
+    m_start = RealTime::zeroTime;
+    m_lasttime = RealTime::zeroTime;
+}
+
+FixedTempoEstimator::ParameterList
+FixedTempoEstimator::getParameterDescriptors() const
+{
+    ParameterList list;
+    return list;
+}
+
+float
+FixedTempoEstimator::getParameter(std::string id) const
+{
+    return 0.f;
+}
+
+void
+FixedTempoEstimator::setParameter(std::string id, float value)
+{
+}
+
+static int TempoOutput = 0;
+static int CandidatesOutput = 1;
+static int DFOutput = 2;
+static int ACFOutput = 3;
+static int FilteredACFOutput = 4;
+
+FixedTempoEstimator::OutputList
+FixedTempoEstimator::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor d;
+    d.identifier = "tempo";
+    d.name = "Tempo";
+    d.description = "Estimated tempo";
+    d.unit = "bpm";
+    d.hasFixedBinCount = true;
+    d.binCount = 1;
+    d.hasKnownExtents = false;
+    d.isQuantized = false;
+    d.sampleType = OutputDescriptor::VariableSampleRate;
+    d.sampleRate = m_inputSampleRate;
+    d.hasDuration = true; // our returned tempo spans a certain range
+    list.push_back(d);
+
+    d.identifier = "candidates";
+    d.name = "Tempo candidates";
+    d.description = "Possible tempo estimates, one per bin with the most likely in the first bin";
+    d.unit = "bpm";
+    d.hasFixedBinCount = false;
+    list.push_back(d);
+
+    d.identifier = "detectionfunction";
+    d.name = "Detection Function";
+    d.description = "Onset detection function";
+    d.unit = "";
+    d.hasFixedBinCount = 1;
+    d.binCount = 1;
+    d.hasKnownExtents = true;
+    d.minValue = 0.0;
+    d.maxValue = 1.0;
+    d.isQuantized = false;
+    d.quantizeStep = 0.0;
+    d.sampleType = OutputDescriptor::FixedSampleRate;
+    if (m_stepSize) {
+        d.sampleRate = m_inputSampleRate / m_stepSize;
+    } else {
+        d.sampleRate = m_inputSampleRate / (getPreferredBlockSize()/2);
+    }
+    d.hasDuration = false;
+    list.push_back(d);
+
+    d.identifier = "acf";
+    d.name = "Autocorrelation Function";
+    d.description = "Autocorrelation of onset detection function";
+    d.hasKnownExtents = false;
+    d.unit = "r";
+    list.push_back(d);
+
+    d.identifier = "filtered_acf";
+    d.name = "Filtered Autocorrelation";
+    d.description = "Filtered autocorrelation of onset detection function";
+    d.unit = "r";
+    list.push_back(d);
+
+    return list;
+}
+
+FixedTempoEstimator::FeatureSet
+FixedTempoEstimator::process(const float *const *inputBuffers, RealTime ts)
+{
+    FeatureSet fs;
+
+    if (m_stepSize == 0) {
+	cerr << "ERROR: FixedTempoEstimator::process: "
+	     << "FixedTempoEstimator has not been initialised"
+	     << endl;
+	return fs;
+    }
+
+//    if (m_n < m_dfsize) cerr << "m_n = " << m_n << endl;
+
+    if (m_n == 0) m_start = ts;
+    m_lasttime = ts;
+
+    if (m_n == m_dfsize) {
+        calculate();
+        fs = assembleFeatures();
+        ++m_n;
+        return fs;
+    }
+
+    if (m_n > m_dfsize) return FeatureSet();
+
+    float value = 0.f;
+
+    for (size_t i = 1; i < m_blockSize/2; ++i) {
+
+        float real = inputBuffers[0][i*2];
+        float imag = inputBuffers[0][i*2 + 1];
+
+        float sqrmag = real * real + imag * imag;
+        value += fabsf(sqrmag - m_priorMagnitudes[i]);
+
+        m_priorMagnitudes[i] = sqrmag;
+    }
+
+    m_df[m_n] = value;
+
+    ++m_n;
+    return fs;
+}
+
+FixedTempoEstimator::FeatureSet
+FixedTempoEstimator::getRemainingFeatures()
+{
+    FeatureSet fs;
+    if (m_n > m_dfsize) return fs;
+    calculate();
+    fs = assembleFeatures();
+    ++m_n;
+    return fs;
+}
+
+float
+FixedTempoEstimator::lag2tempo(int lag)
+{
+    return 60.f / ((lag * m_stepSize) / m_inputSampleRate);
+}
+
+int
+FixedTempoEstimator::tempo2lag(float tempo)
+{
+    return ((60.f / tempo) * m_inputSampleRate) / m_stepSize;
+}
+
+void
+FixedTempoEstimator::calculate()
+{    
+    cerr << "FixedTempoEstimator::calculate: m_n = " << m_n << endl;
+    
+    if (m_r) {
+        cerr << "FixedTempoEstimator::calculate: calculation already happened?" << endl;
+        return;
+    }
+
+    if (m_n < m_dfsize / 9) {
+        cerr << "FixedTempoEstimator::calculate: Not enough data to go on (have " << m_n << ", want at least " << m_dfsize/4 << ")" << endl;
+        return; // not enough data (perhaps we should return the duration of the input as the "estimated" beat length?)
+    }
+
+    int n = m_n;
+
+    m_r = new float[n/2];
+    m_fr = new float[n/2];
+    m_t = new float[n/2];
+
+    for (int i = 0; i < n/2; ++i) {
+        m_r[i] = 0.f;
+        m_fr[i] = 0.f;
+        m_t[i] = lag2tempo(i);
+    }
+
+    for (int i = 0; i < n/2; ++i) {
+
+        for (int j = i; j < n-1; ++j) {
+            m_r[i] += m_df[j] * m_df[j - i];
+        }
+
+        m_r[i] /= n - i - 1;
+    }
+
+    float related[] = { 0.5, 2, 3, 4 };
+
+    for (int i = 1; i < n/2-1; ++i) {
+
+        float weight = 1.f - fabsf(128.f - lag2tempo(i)) * 0.005;
+        if (weight < 0.f) weight = 0.f;
+        weight = weight * weight * weight;
+
+        m_fr[i] = m_r[i];
+
+        int div = 1;
+
+        for (int j = 0; j < int(sizeof(related)/sizeof(related[0])); ++j) {
+
+            int k0 = int(i * related[j] + 0.5);
+
+            if (k0 >= 0 && k0 < int(n/2)) {
+
+                int kmax = 0, kmin = 0;
+                float kvmax = 0, kvmin = 0;
+                bool have = false;
+
+                for (int k = k0 - 1; k <= k0 + 1; ++k) {
+
+                    if (k < 0 || k >= n/2) continue;
+
+                    if (!have || (m_r[k] > kvmax)) { kmax = k; kvmax = m_r[k]; }
+                    if (!have || (m_r[k] < kvmin)) { kmin = k; kvmin = m_r[k]; }
+                    
+                    have = true;
+                }
+                
+                m_fr[i] += m_r[kmax] / 5;
+
+                if ((kmax == 0 || m_r[kmax] > m_r[kmax-1]) &&
+                    (kmax == n/2-1 || m_r[kmax] > m_r[kmax+1]) &&
+                    kvmax > kvmin * 1.05) {
+                    
+                    m_t[i] = m_t[i] + lag2tempo(kmax) * related[j];
+                    ++div;
+                }
+            }
+        }
+        
+        m_t[i] /= div;
+        
+//        if (div > 1) {
+//            cerr << "adjusting tempo from " << lag2tempo(i) << " to "
+//                 << m_t[i] << " for fr = " << m_fr[i] << " (div = " << div << ")" << endl;
+//        }
+        
+        m_fr[i] += m_fr[i] * (weight / 3);
+    }
+}
+    
+
+FixedTempoEstimator::FeatureSet
+FixedTempoEstimator::assembleFeatures()
+{
+    FeatureSet fs;
+    if (!m_r) return fs; // No results
+
+    Feature feature;
+    feature.hasTimestamp = true;
+    feature.hasDuration = false;
+    feature.label = "";
+    feature.values.clear();
+    feature.values.push_back(0.f);
+
+    char buffer[40];
+
+    int n = m_n;
+
+    for (int i = 0; i < n; ++i) {
+        feature.timestamp = m_start +
+            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
+        feature.values[0] = m_df[i];
+        feature.label = "";
+        fs[DFOutput].push_back(feature);
+    }
+
+    for (int i = 1; i < n/2; ++i) {
+        feature.timestamp = m_start +
+            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
+        feature.values[0] = m_r[i];
+        sprintf(buffer, "%.1f bpm", lag2tempo(i));
+        if (i == n/2-1) feature.label = "";
+        else feature.label = buffer;
+        fs[ACFOutput].push_back(feature);
+    }
+
+    float t0 = 50.f; // our minimum detected tempo (could be a parameter)
+    float t1 = 190.f; // our maximum detected tempo
+
+    //!!! need some way for the host (or at least, the user) to know
+    //!!! that it should only pass a certain amount of
+    //!!! input... e.g. by making the amount configurable
+
+    int p0 = tempo2lag(t1);
+    int p1 = tempo2lag(t0);
+
+    std::map<float, int> candidates;
+
+    for (int i = p0; i <= p1 && i < n/2-1; ++i) {
+
+        if (m_fr[i] > m_fr[i-1] &&
+            m_fr[i] > m_fr[i+1]) {
+            candidates[m_fr[i]] = i;
+        }
+
+        feature.timestamp = m_start +
+            RealTime::frame2RealTime(i * m_stepSize, m_inputSampleRate);
+        feature.values[0] = m_fr[i];
+        sprintf(buffer, "%.1f bpm", lag2tempo(i));
+        if (i == p1 || i == n/2-2) feature.label = "";
+        else feature.label = buffer;
+        fs[FilteredACFOutput].push_back(feature);
+    }
+
+//    cerr << "maxpi = " << maxpi << " for tempo " << lag2tempo(maxpi) << " (value = " << maxp << ")" << endl;
+
+    if (candidates.empty()) {
+        cerr << "No tempo candidates!" << endl;
+        return fs;
+    }
+
+    feature.hasTimestamp = true;
+    feature.timestamp = m_start;
+    
+    feature.hasDuration = true;
+    feature.duration = m_lasttime - m_start;
+
+    std::map<float, int>::const_iterator ci = candidates.end();
+    --ci;
+    int maxpi = ci->second;
+
+    if (m_t[maxpi] > 0) {
+        cerr << "*** Using adjusted tempo " << m_t[maxpi] << " instead of lag tempo " << lag2tempo(maxpi) << endl;
+        feature.values[0] = m_t[maxpi];
+    } else {
+        // shouldn't happen -- it would imply that this high value was not a peak!
+        feature.values[0] = lag2tempo(maxpi);
+        cerr << "WARNING: No stored tempo for index " << maxpi << endl;
+    }
+
+    sprintf(buffer, "%.1f bpm", feature.values[0]);
+    feature.label = buffer;
+
+    fs[TempoOutput].push_back(feature);
+
+    feature.values.clear();
+    feature.label = "";
+
+    while (feature.values.size() < 8) {
+//        cerr << "adding tempo value from lag " << ci->second << endl;
+        if (m_t[ci->second] > 0) {
+            feature.values.push_back(m_t[ci->second]);
+        } else {
+            feature.values.push_back(lag2tempo(ci->second));
+        }
+        if (ci == candidates.begin()) break;
+        --ci;
+    }
+
+    fs[CandidatesOutput].push_back(feature);
+    
+    return fs;
+}
diff -r f8b38a017d9a -r 14029eb08472 src/PercussionOnsetDetector.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/PercussionOnsetDetector.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,285 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "PercussionOnsetDetector.h"
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+#include <cmath>
+
+
+PercussionOnsetDetector::PercussionOnsetDetector(float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_stepSize(0),
+    m_blockSize(0),
+    m_threshold(3),
+    m_sensitivity(40),
+    m_priorMagnitudes(0),
+    m_dfMinus1(0),
+    m_dfMinus2(0)
+{
+}
+
+PercussionOnsetDetector::~PercussionOnsetDetector()
+{
+    delete[] m_priorMagnitudes;
+}
+
+string
+PercussionOnsetDetector::getIdentifier() const
+{
+    return "percussiononsets";
+}
+
+string
+PercussionOnsetDetector::getName() const
+{
+    return "Simple Percussion Onset Detector";
+}
+
+string
+PercussionOnsetDetector::getDescription() const
+{
+    return "Detect percussive note onsets by identifying broadband energy rises";
+}
+
+string
+PercussionOnsetDetector::getMaker() const
+{
+    return "Vamp SDK Example Plugins";
+}
+
+int
+PercussionOnsetDetector::getPluginVersion() const
+{
+    return 2;
+}
+
+string
+PercussionOnsetDetector::getCopyright() const
+{
+    return "Code copyright 2006 Queen Mary, University of London, after Dan Barry et al 2005.  Freely redistributable (BSD license)";
+}
+
+size_t
+PercussionOnsetDetector::getPreferredStepSize() const
+{
+    return 0;
+}
+
+size_t
+PercussionOnsetDetector::getPreferredBlockSize() const
+{
+    return 1024;
+}
+
+bool
+PercussionOnsetDetector::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = stepSize;
+    m_blockSize = blockSize;
+
+    m_priorMagnitudes = new float[m_blockSize/2];
+
+    for (size_t i = 0; i < m_blockSize/2; ++i) {
+        m_priorMagnitudes[i] = 0.f;
+    }
+
+    m_dfMinus1 = 0.f;
+    m_dfMinus2 = 0.f;
+
+    return true;
+}
+
+void
+PercussionOnsetDetector::reset()
+{
+    for (size_t i = 0; i < m_blockSize/2; ++i) {
+        m_priorMagnitudes[i] = 0.f;
+    }
+
+    m_dfMinus1 = 0.f;
+    m_dfMinus2 = 0.f;
+}
+
+PercussionOnsetDetector::ParameterList
+PercussionOnsetDetector::getParameterDescriptors() const
+{
+    ParameterList list;
+
+    ParameterDescriptor d;
+    d.identifier = "threshold";
+    d.name = "Energy rise threshold";
+    d.description = "Energy rise within a frequency bin necessary to count toward broadband total";
+    d.unit = "dB";
+    d.minValue = 0;
+    d.maxValue = 20;
+    d.defaultValue = 3;
+    d.isQuantized = false;
+    list.push_back(d);
+
+    d.identifier = "sensitivity";
+    d.name = "Sensitivity";
+    d.description = "Sensitivity of peak detector applied to broadband detection function";
+    d.unit = "%";
+    d.minValue = 0;
+    d.maxValue = 100;
+    d.defaultValue = 40;
+    d.isQuantized = false;
+    list.push_back(d);
+
+    return list;
+}
+
+float
+PercussionOnsetDetector::getParameter(std::string id) const
+{
+    if (id == "threshold") return m_threshold;
+    if (id == "sensitivity") return m_sensitivity;
+    return 0.f;
+}
+
+void
+PercussionOnsetDetector::setParameter(std::string id, float value)
+{
+    if (id == "threshold") {
+        if (value < 0) value = 0;
+        if (value > 20) value = 20;
+        m_threshold = value;
+    } else if (id == "sensitivity") {
+        if (value < 0) value = 0;
+        if (value > 100) value = 100;
+        m_sensitivity = value;
+    }
+}
+
+PercussionOnsetDetector::OutputList
+PercussionOnsetDetector::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor d;
+    d.identifier = "onsets";
+    d.name = "Onsets";
+    d.description = "Percussive note onset locations";
+    d.unit = "";
+    d.hasFixedBinCount = true;
+    d.binCount = 0;
+    d.hasKnownExtents = false;
+    d.isQuantized = false;
+    d.sampleType = OutputDescriptor::VariableSampleRate;
+    d.sampleRate = m_inputSampleRate;
+    list.push_back(d);
+
+    d.identifier = "detectionfunction";
+    d.name = "Detection Function";
+    d.description = "Broadband energy rise detection function";
+    d.binCount = 1;
+    d.isQuantized = true;
+    d.quantizeStep = 1.0;
+    d.sampleType = OutputDescriptor::OneSamplePerStep;
+    list.push_back(d);
+
+    return list;
+}
+
+PercussionOnsetDetector::FeatureSet
+PercussionOnsetDetector::process(const float *const *inputBuffers,
+                                 Vamp::RealTime ts)
+{
+    if (m_stepSize == 0) {
+	cerr << "ERROR: PercussionOnsetDetector::process: "
+	     << "PercussionOnsetDetector has not been initialised"
+	     << endl;
+	return FeatureSet();
+    }
+
+    int count = 0;
+
+    for (size_t i = 1; i < m_blockSize/2; ++i) {
+
+        float real = inputBuffers[0][i*2];
+        float imag = inputBuffers[0][i*2 + 1];
+
+        float sqrmag = real * real + imag * imag;
+
+        if (m_priorMagnitudes[i] > 0.f) {
+            float diff = 10.f * log10f(sqrmag / m_priorMagnitudes[i]);
+
+//        std::cout << "i=" << i << ", mag=" << mag << ", prior=" << m_priorMagnitudes[i] << ", diff=" << diff << ", threshold=" << m_threshold << std::endl;
+
+            if (diff >= m_threshold) ++count;
+        }
+
+        m_priorMagnitudes[i] = sqrmag;
+    }
+
+    FeatureSet returnFeatures;
+
+    Feature detectionFunction;
+    detectionFunction.hasTimestamp = false;
+    detectionFunction.values.push_back(count);
+    returnFeatures[1].push_back(detectionFunction);
+
+    if (m_dfMinus2 < m_dfMinus1 &&
+        m_dfMinus1 >= count &&
+        m_dfMinus1 > ((100 - m_sensitivity) * m_blockSize) / 200) {
+
+        Feature onset;
+        onset.hasTimestamp = true;
+        onset.timestamp = ts - Vamp::RealTime::frame2RealTime
+            (m_stepSize, int(m_inputSampleRate + 0.5));
+        returnFeatures[0].push_back(onset);
+    }
+
+    m_dfMinus2 = m_dfMinus1;
+    m_dfMinus1 = count;
+
+    return returnFeatures;
+}
+
+PercussionOnsetDetector::FeatureSet
+PercussionOnsetDetector::getRemainingFeatures()
+{
+    return FeatureSet();
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/PluginAdapter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/PluginAdapter.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,873 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "PluginAdapter.h"
+
+#include <cstring>
+#include <cstdlib>
+
+//#define DEBUG_PLUGIN_ADAPTER 1
+
+namespace Vamp {
+
+class PluginAdapterBase::Impl
+{
+public:
+    Impl(PluginAdapterBase *);
+    ~Impl();
+
+    const VampPluginDescriptor *getDescriptor();
+
+protected:
+    PluginAdapterBase *m_base;
+
+    static VampPluginHandle vampInstantiate(const VampPluginDescriptor *desc,
+                                            float inputSampleRate);
+
+    static void vampCleanup(VampPluginHandle handle);
+
+    static int vampInitialise(VampPluginHandle handle, unsigned int channels,
+                             unsigned int stepSize, unsigned int blockSize);
+
+    static void vampReset(VampPluginHandle handle);
+
+    static float vampGetParameter(VampPluginHandle handle, int param);
+    static void vampSetParameter(VampPluginHandle handle, int param, float value);
+
+    static unsigned int vampGetCurrentProgram(VampPluginHandle handle);
+    static void vampSelectProgram(VampPluginHandle handle, unsigned int program);
+
+    static unsigned int vampGetPreferredStepSize(VampPluginHandle handle);
+    static unsigned int vampGetPreferredBlockSize(VampPluginHandle handle);
+    static unsigned int vampGetMinChannelCount(VampPluginHandle handle);
+    static unsigned int vampGetMaxChannelCount(VampPluginHandle handle);
+
+    static unsigned int vampGetOutputCount(VampPluginHandle handle);
+
+    static VampOutputDescriptor *vampGetOutputDescriptor(VampPluginHandle handle,
+                                                       unsigned int i);
+
+    static void vampReleaseOutputDescriptor(VampOutputDescriptor *desc);
+
+    static VampFeatureList *vampProcess(VampPluginHandle handle,
+                                        const float *const *inputBuffers,
+                                        int sec,
+                                        int nsec);
+
+    static VampFeatureList *vampGetRemainingFeatures(VampPluginHandle handle);
+
+    static void vampReleaseFeatureSet(VampFeatureList *fs);
+
+    void cleanup(Plugin *plugin);
+    void checkOutputMap(Plugin *plugin);
+    unsigned int getOutputCount(Plugin *plugin);
+    VampOutputDescriptor *getOutputDescriptor(Plugin *plugin,
+                                             unsigned int i);
+    VampFeatureList *process(Plugin *plugin,
+                             const float *const *inputBuffers,
+                             int sec, int nsec);
+    VampFeatureList *getRemainingFeatures(Plugin *plugin);
+    VampFeatureList *convertFeatures(Plugin *plugin,
+                                     const Plugin::FeatureSet &features);
+    
+    // maps both plugins and descriptors to adapters
+    typedef std::map<const void *, Impl *> AdapterMap;
+    static AdapterMap *m_adapterMap;
+    static Impl *lookupAdapter(VampPluginHandle);
+
+    bool m_populated;
+    VampPluginDescriptor m_descriptor;
+    Plugin::ParameterList m_parameters;
+    Plugin::ProgramList m_programs;
+    
+    typedef std::map<Plugin *, Plugin::OutputList *> OutputMap;
+    OutputMap m_pluginOutputs;
+
+    std::map<Plugin *, VampFeatureList *> m_fs;
+    std::map<Plugin *, std::vector<size_t> > m_fsizes;
+    std::map<Plugin *, std::vector<std::vector<size_t> > > m_fvsizes;
+    void resizeFS(Plugin *plugin, int n);
+    void resizeFL(Plugin *plugin, int n, size_t sz);
+    void resizeFV(Plugin *plugin, int n, int j, size_t sz);
+};
+
+PluginAdapterBase::PluginAdapterBase()
+{
+    m_impl = new Impl(this);
+}
+
+PluginAdapterBase::~PluginAdapterBase()
+{
+    delete m_impl;
+}
+
+const VampPluginDescriptor *
+PluginAdapterBase::getDescriptor()
+{
+    return m_impl->getDescriptor();
+}
+
+PluginAdapterBase::Impl::Impl(PluginAdapterBase *base) :
+    m_base(base),
+    m_populated(false)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl[" << this << "]::Impl" << std::endl;
+#endif
+}
+
+const VampPluginDescriptor *
+PluginAdapterBase::Impl::getDescriptor()
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl[" << this << "]::getDescriptor" << std::endl;
+#endif
+
+    if (m_populated) return &m_descriptor;
+
+    Plugin *plugin = m_base->createPlugin(48000);
+
+    if (plugin->getVampApiVersion() != VAMP_API_VERSION) {
+        std::cerr << "Vamp::PluginAdapterBase::Impl::getDescriptor: ERROR: "
+                  << "API version " << plugin->getVampApiVersion()
+                  << " for\nplugin \"" << plugin->getIdentifier() << "\" "
+                  << "differs from version "
+                  << VAMP_API_VERSION << " for adapter.\n"
+                  << "This plugin is probably linked against a different version of the Vamp SDK\n"
+                  << "from the version it was compiled with.  It will need to be re-linked correctly\n"
+                  << "before it can be used." << std::endl;
+        delete plugin;
+        return 0;
+    }
+
+    m_parameters = plugin->getParameterDescriptors();
+    m_programs = plugin->getPrograms();
+
+    m_descriptor.vampApiVersion = plugin->getVampApiVersion();
+    m_descriptor.identifier = strdup(plugin->getIdentifier().c_str());
+    m_descriptor.name = strdup(plugin->getName().c_str());
+    m_descriptor.description = strdup(plugin->getDescription().c_str());
+    m_descriptor.maker = strdup(plugin->getMaker().c_str());
+    m_descriptor.pluginVersion = plugin->getPluginVersion();
+    m_descriptor.copyright = strdup(plugin->getCopyright().c_str());
+    
+    m_descriptor.parameterCount = m_parameters.size();
+    m_descriptor.parameters = (const VampParameterDescriptor **)
+        malloc(m_parameters.size() * sizeof(VampParameterDescriptor));
+
+    unsigned int i;
+    
+    for (i = 0; i < m_parameters.size(); ++i) {
+        VampParameterDescriptor *desc = (VampParameterDescriptor *)
+            malloc(sizeof(VampParameterDescriptor));
+        desc->identifier = strdup(m_parameters[i].identifier.c_str());
+        desc->name = strdup(m_parameters[i].name.c_str());
+        desc->description = strdup(m_parameters[i].description.c_str());
+        desc->unit = strdup(m_parameters[i].unit.c_str());
+        desc->minValue = m_parameters[i].minValue;
+        desc->maxValue = m_parameters[i].maxValue;
+        desc->defaultValue = m_parameters[i].defaultValue;
+        desc->isQuantized = m_parameters[i].isQuantized;
+        desc->quantizeStep = m_parameters[i].quantizeStep;
+        desc->valueNames = 0;
+        if (desc->isQuantized && !m_parameters[i].valueNames.empty()) {
+            desc->valueNames = (const char **)
+                malloc((m_parameters[i].valueNames.size()+1) * sizeof(char *));
+            for (unsigned int j = 0; j < m_parameters[i].valueNames.size(); ++j) {
+                desc->valueNames[j] = strdup(m_parameters[i].valueNames[j].c_str());
+            }
+            desc->valueNames[m_parameters[i].valueNames.size()] = 0;
+        }
+        m_descriptor.parameters[i] = desc;
+    }
+    
+    m_descriptor.programCount = m_programs.size();
+    m_descriptor.programs = (const char **)
+        malloc(m_programs.size() * sizeof(const char *));
+    
+    for (i = 0; i < m_programs.size(); ++i) {
+        m_descriptor.programs[i] = strdup(m_programs[i].c_str());
+    }
+    
+    if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
+        m_descriptor.inputDomain = vampFrequencyDomain;
+    } else {
+        m_descriptor.inputDomain = vampTimeDomain;
+    }
+
+    m_descriptor.instantiate = vampInstantiate;
+    m_descriptor.cleanup = vampCleanup;
+    m_descriptor.initialise = vampInitialise;
+    m_descriptor.reset = vampReset;
+    m_descriptor.getParameter = vampGetParameter;
+    m_descriptor.setParameter = vampSetParameter;
+    m_descriptor.getCurrentProgram = vampGetCurrentProgram;
+    m_descriptor.selectProgram = vampSelectProgram;
+    m_descriptor.getPreferredStepSize = vampGetPreferredStepSize;
+    m_descriptor.getPreferredBlockSize = vampGetPreferredBlockSize;
+    m_descriptor.getMinChannelCount = vampGetMinChannelCount;
+    m_descriptor.getMaxChannelCount = vampGetMaxChannelCount;
+    m_descriptor.getOutputCount = vampGetOutputCount;
+    m_descriptor.getOutputDescriptor = vampGetOutputDescriptor;
+    m_descriptor.releaseOutputDescriptor = vampReleaseOutputDescriptor;
+    m_descriptor.process = vampProcess;
+    m_descriptor.getRemainingFeatures = vampGetRemainingFeatures;
+    m_descriptor.releaseFeatureSet = vampReleaseFeatureSet;
+    
+    if (!m_adapterMap) {
+        m_adapterMap = new AdapterMap;
+    }
+    (*m_adapterMap)[&m_descriptor] = this;
+
+    delete plugin;
+
+    m_populated = true;
+    return &m_descriptor;
+}
+
+PluginAdapterBase::Impl::~Impl()
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl[" << this << "]::~Impl" << std::endl;
+#endif
+
+    if (!m_populated) return;
+
+    free((void *)m_descriptor.identifier);
+    free((void *)m_descriptor.name);
+    free((void *)m_descriptor.description);
+    free((void *)m_descriptor.maker);
+    free((void *)m_descriptor.copyright);
+        
+    for (unsigned int i = 0; i < m_descriptor.parameterCount; ++i) {
+        const VampParameterDescriptor *desc = m_descriptor.parameters[i];
+        free((void *)desc->identifier);
+        free((void *)desc->name);
+        free((void *)desc->description);
+        free((void *)desc->unit);
+        if (desc->valueNames) {
+            for (unsigned int j = 0; desc->valueNames[j]; ++j) {
+                free((void *)desc->valueNames[j]);
+            }
+            free((void *)desc->valueNames);
+        }
+    }
+    free((void *)m_descriptor.parameters);
+
+    for (unsigned int i = 0; i < m_descriptor.programCount; ++i) {
+        free((void *)m_descriptor.programs[i]);
+    }
+    free((void *)m_descriptor.programs);
+
+    if (m_adapterMap) {
+        
+        m_adapterMap->erase(&m_descriptor);
+
+        if (m_adapterMap->empty()) {
+            delete m_adapterMap;
+            m_adapterMap = 0;
+        }
+    }
+}
+
+PluginAdapterBase::Impl *
+PluginAdapterBase::Impl::lookupAdapter(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::lookupAdapter(" << handle << ")" << std::endl;
+#endif
+
+    if (!m_adapterMap) return 0;
+    AdapterMap::const_iterator i = m_adapterMap->find(handle);
+    if (i == m_adapterMap->end()) return 0;
+    return i->second;
+}
+
+VampPluginHandle
+PluginAdapterBase::Impl::vampInstantiate(const VampPluginDescriptor *desc,
+                                   float inputSampleRate)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampInstantiate(" << desc << ")" << std::endl;
+#endif
+
+    if (!m_adapterMap) {
+        m_adapterMap = new AdapterMap();
+    }
+
+    if (m_adapterMap->find(desc) == m_adapterMap->end()) {
+        std::cerr << "WARNING: PluginAdapterBase::Impl::vampInstantiate: Descriptor " << desc << " not in adapter map" << std::endl;
+        return 0;
+    }
+
+    Impl *adapter = (*m_adapterMap)[desc];
+    if (desc != &adapter->m_descriptor) return 0;
+
+    Plugin *plugin = adapter->m_base->createPlugin(inputSampleRate);
+    if (plugin) {
+        (*m_adapterMap)[plugin] = adapter;
+    }
+
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampInstantiate(" << desc << "): returning handle " << plugin << std::endl;
+#endif
+
+    return plugin;
+}
+
+void
+PluginAdapterBase::Impl::vampCleanup(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampCleanup(" << handle << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) {
+        delete ((Plugin *)handle);
+        return;
+    }
+    adapter->cleanup(((Plugin *)handle));
+}
+
+int
+PluginAdapterBase::Impl::vampInitialise(VampPluginHandle handle,
+                                  unsigned int channels,
+                                  unsigned int stepSize,
+                                  unsigned int blockSize)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampInitialise(" << handle << ", " << channels << ", " << stepSize << ", " << blockSize << ")" << std::endl;
+#endif
+
+    bool result = ((Plugin *)handle)->initialise
+        (channels, stepSize, blockSize);
+    return result ? 1 : 0;
+}
+
+void
+PluginAdapterBase::Impl::vampReset(VampPluginHandle handle) 
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampReset(" << handle << ")" << std::endl;
+#endif
+
+    ((Plugin *)handle)->reset();
+}
+
+float
+PluginAdapterBase::Impl::vampGetParameter(VampPluginHandle handle,
+                                    int param) 
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetParameter(" << handle << ", " << param << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return 0.0;
+    Plugin::ParameterList &list = adapter->m_parameters;
+    return ((Plugin *)handle)->getParameter(list[param].identifier);
+}
+
+void
+PluginAdapterBase::Impl::vampSetParameter(VampPluginHandle handle,
+                                    int param, float value)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampSetParameter(" << handle << ", " << param << ", " << value << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return;
+    Plugin::ParameterList &list = adapter->m_parameters;
+    ((Plugin *)handle)->setParameter(list[param].identifier, value);
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetCurrentProgram(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetCurrentProgram(" << handle << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return 0;
+    Plugin::ProgramList &list = adapter->m_programs;
+    std::string program = ((Plugin *)handle)->getCurrentProgram();
+    for (unsigned int i = 0; i < list.size(); ++i) {
+        if (list[i] == program) return i;
+    }
+    return 0;
+}
+
+void
+PluginAdapterBase::Impl::vampSelectProgram(VampPluginHandle handle,
+                                     unsigned int program)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampSelectProgram(" << handle << ", " << program << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return;
+    Plugin::ProgramList &list = adapter->m_programs;
+    ((Plugin *)handle)->selectProgram(list[program]);
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetPreferredStepSize(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetPreferredStepSize(" << handle << ")" << std::endl;
+#endif
+
+    return ((Plugin *)handle)->getPreferredStepSize();
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetPreferredBlockSize(VampPluginHandle handle) 
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetPreferredBlockSize(" << handle << ")" << std::endl;
+#endif
+
+    return ((Plugin *)handle)->getPreferredBlockSize();
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetMinChannelCount(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetMinChannelCount(" << handle << ")" << std::endl;
+#endif
+
+    return ((Plugin *)handle)->getMinChannelCount();
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetMaxChannelCount(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetMaxChannelCount(" << handle << ")" << std::endl;
+#endif
+
+    return ((Plugin *)handle)->getMaxChannelCount();
+}
+
+unsigned int
+PluginAdapterBase::Impl::vampGetOutputCount(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetOutputCount(" << handle << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+
+//    std::cerr << "vampGetOutputCount: handle " << handle << " -> adapter "<< adapter << std::endl;
+
+    if (!adapter) return 0;
+    return adapter->getOutputCount((Plugin *)handle);
+}
+
+VampOutputDescriptor *
+PluginAdapterBase::Impl::vampGetOutputDescriptor(VampPluginHandle handle,
+                                           unsigned int i)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetOutputDescriptor(" << handle << ", " << i << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+
+//    std::cerr << "vampGetOutputDescriptor: handle " << handle << " -> adapter "<< adapter << std::endl;
+
+    if (!adapter) return 0;
+    return adapter->getOutputDescriptor((Plugin *)handle, i);
+}
+
+void
+PluginAdapterBase::Impl::vampReleaseOutputDescriptor(VampOutputDescriptor *desc)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampReleaseOutputDescriptor(" << desc << ")" << std::endl;
+#endif
+
+    if (desc->identifier) free((void *)desc->identifier);
+    if (desc->name) free((void *)desc->name);
+    if (desc->description) free((void *)desc->description);
+    if (desc->unit) free((void *)desc->unit);
+    if (desc->hasFixedBinCount && desc->binNames) {
+        for (unsigned int i = 0; i < desc->binCount; ++i) {
+            if (desc->binNames[i]) {
+                free((void *)desc->binNames[i]);
+            }
+        }
+    }
+    if (desc->binNames) free((void *)desc->binNames);
+    free((void *)desc);
+}
+
+VampFeatureList *
+PluginAdapterBase::Impl::vampProcess(VampPluginHandle handle,
+                                     const float *const *inputBuffers,
+                                     int sec,
+                                     int nsec)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampProcess(" << handle << ", " << sec << ", " << nsec << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return 0;
+    return adapter->process((Plugin *)handle,
+                            inputBuffers, sec, nsec);
+}
+
+VampFeatureList *
+PluginAdapterBase::Impl::vampGetRemainingFeatures(VampPluginHandle handle)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampGetRemainingFeatures(" << handle << ")" << std::endl;
+#endif
+
+    Impl *adapter = lookupAdapter(handle);
+    if (!adapter) return 0;
+    return adapter->getRemainingFeatures((Plugin *)handle);
+}
+
+void
+PluginAdapterBase::Impl::vampReleaseFeatureSet(VampFeatureList *fs)
+{
+#ifdef DEBUG_PLUGIN_ADAPTER
+    std::cerr << "PluginAdapterBase::Impl::vampReleaseFeatureSet" << std::endl;
+#endif
+}
+
+void 
+PluginAdapterBase::Impl::cleanup(Plugin *plugin)
+{
+    if (m_fs.find(plugin) != m_fs.end()) {
+        size_t outputCount = 0;
+        if (m_pluginOutputs[plugin]) {
+            outputCount = m_pluginOutputs[plugin]->size();
+        }
+        VampFeatureList *list = m_fs[plugin];
+        for (unsigned int i = 0; i < outputCount; ++i) {
+            for (unsigned int j = 0; j < m_fsizes[plugin][i]; ++j) {
+                if (list[i].features[j].v1.label) {
+                    free(list[i].features[j].v1.label);
+                }
+                if (list[i].features[j].v1.values) {
+                    free(list[i].features[j].v1.values);
+                }
+            }
+            if (list[i].features) free(list[i].features);
+        }
+        m_fs.erase(plugin);
+        m_fsizes.erase(plugin);
+        m_fvsizes.erase(plugin);
+    }
+
+    if (m_pluginOutputs.find(plugin) != m_pluginOutputs.end()) {
+        delete m_pluginOutputs[plugin];
+        m_pluginOutputs.erase(plugin);
+    }
+
+    if (m_adapterMap) {
+        m_adapterMap->erase(plugin);
+
+        if (m_adapterMap->empty()) {
+            delete m_adapterMap;
+            m_adapterMap = 0;
+        }
+    }
+
+    delete ((Plugin *)plugin);
+}
+
+void 
+PluginAdapterBase::Impl::checkOutputMap(Plugin *plugin)
+{
+    if (m_pluginOutputs.find(plugin) == m_pluginOutputs.end() ||
+        !m_pluginOutputs[plugin]) {
+        m_pluginOutputs[plugin] = new Plugin::OutputList
+            (plugin->getOutputDescriptors());
+//        std::cerr << "PluginAdapterBase::Impl::checkOutputMap: Have " << m_pluginOutputs[plugin]->size() << " outputs for plugin " << plugin->getIdentifier() << std::endl;
+    }
+}
+
+unsigned int 
+PluginAdapterBase::Impl::getOutputCount(Plugin *plugin)
+{
+    checkOutputMap(plugin);
+    return m_pluginOutputs[plugin]->size();
+}
+
+VampOutputDescriptor *
+PluginAdapterBase::Impl::getOutputDescriptor(Plugin *plugin,
+                                       unsigned int i)
+{
+    checkOutputMap(plugin);
+    Plugin::OutputDescriptor &od =
+        (*m_pluginOutputs[plugin])[i];
+
+    VampOutputDescriptor *desc = (VampOutputDescriptor *)
+        malloc(sizeof(VampOutputDescriptor));
+
+    desc->identifier = strdup(od.identifier.c_str());
+    desc->name = strdup(od.name.c_str());
+    desc->description = strdup(od.description.c_str());
+    desc->unit = strdup(od.unit.c_str());
+    desc->hasFixedBinCount = od.hasFixedBinCount;
+    desc->binCount = od.binCount;
+
+    if (od.hasFixedBinCount && od.binCount > 0) {
+        desc->binNames = (const char **)
+            malloc(od.binCount * sizeof(const char *));
+        
+        for (unsigned int i = 0; i < od.binCount; ++i) {
+            if (i < od.binNames.size()) {
+                desc->binNames[i] = strdup(od.binNames[i].c_str());
+            } else {
+                desc->binNames[i] = 0;
+            }
+        }
+    } else {
+        desc->binNames = 0;
+    }
+
+    desc->hasKnownExtents = od.hasKnownExtents;
+    desc->minValue = od.minValue;
+    desc->maxValue = od.maxValue;
+    desc->isQuantized = od.isQuantized;
+    desc->quantizeStep = od.quantizeStep;
+
+    switch (od.sampleType) {
+    case Plugin::OutputDescriptor::OneSamplePerStep:
+        desc->sampleType = vampOneSamplePerStep; break;
+    case Plugin::OutputDescriptor::FixedSampleRate:
+        desc->sampleType = vampFixedSampleRate; break;
+    case Plugin::OutputDescriptor::VariableSampleRate:
+        desc->sampleType = vampVariableSampleRate; break;
+    }
+
+    desc->sampleRate = od.sampleRate;
+    desc->hasDuration = od.hasDuration;
+
+    return desc;
+}
+    
+VampFeatureList *
+PluginAdapterBase::Impl::process(Plugin *plugin,
+                                 const float *const *inputBuffers,
+                                 int sec, int nsec)
+{
+//    std::cerr << "PluginAdapterBase::Impl::process" << std::endl;
+    RealTime rt(sec, nsec);
+    checkOutputMap(plugin);
+    return convertFeatures(plugin, plugin->process(inputBuffers, rt));
+}
+    
+VampFeatureList *
+PluginAdapterBase::Impl::getRemainingFeatures(Plugin *plugin)
+{
+//    std::cerr << "PluginAdapterBase::Impl::getRemainingFeatures" << std::endl;
+    checkOutputMap(plugin);
+    return convertFeatures(plugin, plugin->getRemainingFeatures());
+}
+
+VampFeatureList *
+PluginAdapterBase::Impl::convertFeatures(Plugin *plugin,
+                                         const Plugin::FeatureSet &features)
+{
+    int lastN = -1;
+
+    int outputCount = 0;
+    if (m_pluginOutputs[plugin]) outputCount = m_pluginOutputs[plugin]->size();
+    
+    resizeFS(plugin, outputCount);
+    VampFeatureList *fs = m_fs[plugin];
+
+//    std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: sizeof(Feature) == " << sizeof(Plugin::Feature) << ", sizeof(VampFeature) == " << sizeof(VampFeature) << ", sizeof(VampFeatureList) == " << sizeof(VampFeatureList) << std::endl;
+
+    for (Plugin::FeatureSet::const_iterator fi = features.begin();
+         fi != features.end(); ++fi) {
+
+        int n = fi->first;
+        
+//        std::cerr << "PluginAdapterBase::Impl::convertFeatures: n = " << n << std::endl;
+
+        if (n >= int(outputCount)) {
+            std::cerr << "WARNING: PluginAdapterBase::Impl::convertFeatures: Too many outputs from plugin (" << n+1 << ", only should be " << outputCount << ")" << std::endl;
+            continue;
+        }
+
+        if (n > lastN + 1) {
+            for (int i = lastN + 1; i < n; ++i) {
+                fs[i].featureCount = 0;
+            }
+        }
+
+        const Plugin::FeatureList &fl = fi->second;
+
+        size_t sz = fl.size();
+        if (sz > m_fsizes[plugin][n]) resizeFL(plugin, n, sz);
+        fs[n].featureCount = sz;
+        
+        for (size_t j = 0; j < sz; ++j) {
+
+//            std::cerr << "PluginAdapterBase::Impl::convertFeatures: j = " << j << std::endl;
+
+            VampFeature *feature = &fs[n].features[j].v1;
+
+            feature->hasTimestamp = fl[j].hasTimestamp;
+            feature->sec = fl[j].timestamp.sec;
+            feature->nsec = fl[j].timestamp.nsec;
+            feature->valueCount = fl[j].values.size();
+
+            VampFeatureV2 *v2 = &fs[n].features[j + sz].v2;
+            
+            v2->hasDuration = fl[j].hasDuration;
+            v2->durationSec = fl[j].duration.sec;
+            v2->durationNsec = fl[j].duration.nsec;
+
+            if (feature->label) free(feature->label);
+
+            if (fl[j].label.empty()) {
+                feature->label = 0;
+            } else {
+                feature->label = strdup(fl[j].label.c_str());
+            }
+
+            if (feature->valueCount > m_fvsizes[plugin][n][j]) {
+                resizeFV(plugin, n, j, feature->valueCount);
+            }
+
+            for (unsigned int k = 0; k < feature->valueCount; ++k) {
+//                std::cerr << "PluginAdapterBase::Impl::convertFeatures: k = " << k << std::endl;
+                feature->values[k] = fl[j].values[k];
+            }
+        }
+
+        lastN = n;
+    }
+
+    if (lastN == -1) return 0;
+
+    if (int(outputCount) > lastN + 1) {
+        for (int i = lastN + 1; i < int(outputCount); ++i) {
+            fs[i].featureCount = 0;
+        }
+    }
+
+//    std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: have " << outputCount << " outputs" << std::endl;
+//    for (int i = 0; i < outputCount; ++i) {
+//        std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: output " << i << " has " << fs[i].featureCount << " features" << std::endl;
+//    }
+
+
+    return fs;
+}
+
+void
+PluginAdapterBase::Impl::resizeFS(Plugin *plugin, int n)
+{
+//    std::cerr << "PluginAdapterBase::Impl::resizeFS(" << plugin << ", " << n << ")" << std::endl;
+
+    int i = m_fsizes[plugin].size();
+    if (i >= n) return;
+
+//    std::cerr << "resizing from " << i << std::endl;
+
+    m_fs[plugin] = (VampFeatureList *)realloc
+        (m_fs[plugin], n * sizeof(VampFeatureList));
+
+    while (i < n) {
+        m_fs[plugin][i].featureCount = 0;
+        m_fs[plugin][i].features = 0;
+        m_fsizes[plugin].push_back(0);
+        m_fvsizes[plugin].push_back(std::vector<size_t>());
+        i++;
+    }
+}
+
+void
+PluginAdapterBase::Impl::resizeFL(Plugin *plugin, int n, size_t sz)
+{
+//    std::cerr << "PluginAdapterBase::Impl::resizeFL(" << plugin << ", " << n << ", "
+//              << sz << ")" << std::endl;
+
+    size_t i = m_fsizes[plugin][n];
+    if (i >= sz) return;
+
+//    std::cerr << "resizing from " << i << std::endl;
+
+    m_fs[plugin][n].features = (VampFeatureUnion *)realloc
+        (m_fs[plugin][n].features, 2 * sz * sizeof(VampFeatureUnion));
+
+    while (m_fsizes[plugin][n] < sz) {
+        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.hasTimestamp = 0;
+        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.valueCount = 0;
+        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.values = 0;
+        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.label = 0;
+        m_fs[plugin][n].features[m_fsizes[plugin][n] + sz].v2.hasDuration = 0;
+        m_fvsizes[plugin][n].push_back(0);
+        m_fsizes[plugin][n]++;
+    }
+}
+
+void
+PluginAdapterBase::Impl::resizeFV(Plugin *plugin, int n, int j, size_t sz)
+{
+//    std::cerr << "PluginAdapterBase::Impl::resizeFV(" << plugin << ", " << n << ", "
+//              << j << ", " << sz << ")" << std::endl;
+
+    size_t i = m_fvsizes[plugin][n][j];
+    if (i >= sz) return;
+
+//    std::cerr << "resizing from " << i << std::endl;
+
+    m_fs[plugin][n].features[j].v1.values = (float *)realloc
+        (m_fs[plugin][n].features[j].v1.values, sz * sizeof(float));
+
+    m_fvsizes[plugin][n][j] = sz;
+}
+  
+PluginAdapterBase::Impl::AdapterMap *
+PluginAdapterBase::Impl::m_adapterMap = 0;
+
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/PluginHostAdapter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/PluginHostAdapter.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,447 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "PluginHostAdapter.h"
+#include <cstdlib>
+
+namespace Vamp
+{
+
+PluginHostAdapter::PluginHostAdapter(const VampPluginDescriptor *descriptor,
+                                     float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_descriptor(descriptor)
+{
+//    std::cerr << "PluginHostAdapter::PluginHostAdapter (plugin = " << descriptor->name << ")" << std::endl;
+    m_handle = m_descriptor->instantiate(m_descriptor, inputSampleRate);
+    if (!m_handle) {
+//        std::cerr << "WARNING: PluginHostAdapter: Plugin instantiation failed for plugin " << m_descriptor->name << std::endl;
+    }
+}
+
+PluginHostAdapter::~PluginHostAdapter()
+{
+//    std::cerr << "PluginHostAdapter::~PluginHostAdapter (plugin = " << m_descriptor->name << ")" << std::endl;
+    if (m_handle) m_descriptor->cleanup(m_handle);
+}
+
+std::vector<std::string>
+PluginHostAdapter::getPluginPath()
+{
+    std::vector<std::string> path;
+    std::string envPath;
+
+    char *cpath = getenv("VAMP_PATH");
+    if (cpath) envPath = cpath;
+
+#ifdef _WIN32
+#define PATH_SEPARATOR ';'
+#define DEFAULT_VAMP_PATH "%ProgramFiles%\\Vamp Plugins"
+#else
+#define PATH_SEPARATOR ':'
+#ifdef __APPLE__
+#define DEFAULT_VAMP_PATH "$HOME/Library/Audio/Plug-Ins/Vamp:/Library/Audio/Plug-Ins/Vamp"
+#else
+#define DEFAULT_VAMP_PATH "$HOME/vamp:$HOME/.vamp:/usr/local/lib/vamp:/usr/lib/vamp"
+#endif
+#endif
+
+    if (envPath == "") {
+        envPath = DEFAULT_VAMP_PATH;
+        char *chome = getenv("HOME");
+        if (chome) {
+            std::string home(chome);
+            std::string::size_type f;
+            while ((f = envPath.find("$HOME")) != std::string::npos &&
+                    f < envPath.length()) {
+                envPath.replace(f, 5, home);
+            }
+        }
+#ifdef _WIN32
+        char *cpfiles = getenv("ProgramFiles");
+        if (!cpfiles) cpfiles = "C:\\Program Files";
+        std::string pfiles(cpfiles);
+        std::string::size_type f;
+        while ((f = envPath.find("%ProgramFiles%")) != std::string::npos &&
+               f < envPath.length()) {
+            envPath.replace(f, 14, pfiles);
+        }
+#endif
+    }
+
+    std::string::size_type index = 0, newindex = 0;
+
+    while ((newindex = envPath.find(PATH_SEPARATOR, index)) < envPath.size()) {
+	path.push_back(envPath.substr(index, newindex - index));
+	index = newindex + 1;
+    }
+    
+    path.push_back(envPath.substr(index));
+
+    return path;
+}
+
+bool
+PluginHostAdapter::initialise(size_t channels,
+                              size_t stepSize,
+                              size_t blockSize)
+{
+    if (!m_handle) return false;
+    return m_descriptor->initialise(m_handle, channels, stepSize, blockSize) ?
+        true : false;
+}
+
+void
+PluginHostAdapter::reset()
+{
+    if (!m_handle) {
+//        std::cerr << "PluginHostAdapter::reset: no handle" << std::endl;
+        return;
+    }
+//    std::cerr << "PluginHostAdapter::reset(" << m_handle << ")" << std::endl;
+    m_descriptor->reset(m_handle);
+}
+
+PluginHostAdapter::InputDomain
+PluginHostAdapter::getInputDomain() const
+{
+    if (m_descriptor->inputDomain == vampFrequencyDomain) {
+        return FrequencyDomain;
+    } else {
+        return TimeDomain;
+    }
+}
+
+unsigned int
+PluginHostAdapter::getVampApiVersion() const
+{
+    return m_descriptor->vampApiVersion;
+}
+
+std::string
+PluginHostAdapter::getIdentifier() const
+{
+    return m_descriptor->identifier;
+}
+
+std::string
+PluginHostAdapter::getName() const
+{
+    return m_descriptor->name;
+}
+
+std::string
+PluginHostAdapter::getDescription() const
+{
+    return m_descriptor->description;
+}
+
+std::string
+PluginHostAdapter::getMaker() const
+{
+    return m_descriptor->maker;
+}
+
+int
+PluginHostAdapter::getPluginVersion() const
+{
+    return m_descriptor->pluginVersion;
+}
+
+std::string
+PluginHostAdapter::getCopyright() const
+{
+    return m_descriptor->copyright;
+}
+
+PluginHostAdapter::ParameterList
+PluginHostAdapter::getParameterDescriptors() const
+{
+    ParameterList list;
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        const VampParameterDescriptor *spd = m_descriptor->parameters[i];
+        ParameterDescriptor pd;
+        pd.identifier = spd->identifier;
+        pd.name = spd->name;
+        pd.description = spd->description;
+        pd.unit = spd->unit;
+        pd.minValue = spd->minValue;
+        pd.maxValue = spd->maxValue;
+        pd.defaultValue = spd->defaultValue;
+        pd.isQuantized = spd->isQuantized;
+        pd.quantizeStep = spd->quantizeStep;
+        if (pd.isQuantized && spd->valueNames) {
+            for (unsigned int j = 0; spd->valueNames[j]; ++j) {
+                pd.valueNames.push_back(spd->valueNames[j]);
+            }
+        }
+        list.push_back(pd);
+    }
+    return list;
+}
+
+float
+PluginHostAdapter::getParameter(std::string param) const
+{
+    if (!m_handle) return 0.0;
+
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        if (param == m_descriptor->parameters[i]->identifier) {
+            return m_descriptor->getParameter(m_handle, i);
+        }
+    }
+
+    return 0.0;
+}
+
+void
+PluginHostAdapter::setParameter(std::string param, 
+                                float value)
+{
+    if (!m_handle) return;
+
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        if (param == m_descriptor->parameters[i]->identifier) {
+            m_descriptor->setParameter(m_handle, i, value);
+            return;
+        }
+    }
+}
+
+PluginHostAdapter::ProgramList
+PluginHostAdapter::getPrograms() const
+{
+    ProgramList list;
+    
+    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
+        list.push_back(m_descriptor->programs[i]);
+    }
+    
+    return list;
+}
+
+std::string
+PluginHostAdapter::getCurrentProgram() const
+{
+    if (!m_handle) return "";
+
+    int pn = m_descriptor->getCurrentProgram(m_handle);
+    return m_descriptor->programs[pn];
+}
+
+void
+PluginHostAdapter::selectProgram(std::string program)
+{
+    if (!m_handle) return;
+
+    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
+        if (program == m_descriptor->programs[i]) {
+            m_descriptor->selectProgram(m_handle, i);
+            return;
+        }
+    }
+}
+
+size_t
+PluginHostAdapter::getPreferredStepSize() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getPreferredStepSize(m_handle);
+}
+
+size_t
+PluginHostAdapter::getPreferredBlockSize() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getPreferredBlockSize(m_handle);
+}
+
+size_t
+PluginHostAdapter::getMinChannelCount() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getMinChannelCount(m_handle);
+}
+
+size_t
+PluginHostAdapter::getMaxChannelCount() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getMaxChannelCount(m_handle);
+}
+
+PluginHostAdapter::OutputList
+PluginHostAdapter::getOutputDescriptors() const
+{
+    OutputList list;
+    if (!m_handle) {
+//        std::cerr << "PluginHostAdapter::getOutputDescriptors: no handle " << std::endl;
+        return list;
+    }
+
+    unsigned int count = m_descriptor->getOutputCount(m_handle);
+
+    for (unsigned int i = 0; i < count; ++i) {
+        VampOutputDescriptor *sd = m_descriptor->getOutputDescriptor(m_handle, i);
+        OutputDescriptor d;
+        d.identifier = sd->identifier;
+        d.name = sd->name;
+        d.description = sd->description;
+        d.unit = sd->unit;
+        d.hasFixedBinCount = sd->hasFixedBinCount;
+        d.binCount = sd->binCount;
+        if (d.hasFixedBinCount) {
+            for (unsigned int j = 0; j < sd->binCount; ++j) {
+                d.binNames.push_back(sd->binNames[j] ? sd->binNames[j] : "");
+            }
+        }
+        d.hasKnownExtents = sd->hasKnownExtents;
+        d.minValue = sd->minValue;
+        d.maxValue = sd->maxValue;
+        d.isQuantized = sd->isQuantized;
+        d.quantizeStep = sd->quantizeStep;
+
+        switch (sd->sampleType) {
+        case vampOneSamplePerStep:
+            d.sampleType = OutputDescriptor::OneSamplePerStep; break;
+        case vampFixedSampleRate:
+            d.sampleType = OutputDescriptor::FixedSampleRate; break;
+        case vampVariableSampleRate:
+            d.sampleType = OutputDescriptor::VariableSampleRate; break;
+        }
+
+        d.sampleRate = sd->sampleRate;
+
+        if (m_descriptor->vampApiVersion >= 2) {
+            d.hasDuration = sd->hasDuration;
+        } else {
+            d.hasDuration = false;
+        }
+
+        list.push_back(d);
+
+        m_descriptor->releaseOutputDescriptor(sd);
+    }
+
+    return list;
+}
+
+PluginHostAdapter::FeatureSet
+PluginHostAdapter::process(const float *const *inputBuffers,
+                           RealTime timestamp)
+{
+    FeatureSet fs;
+    if (!m_handle) return fs;
+
+    int sec = timestamp.sec;
+    int nsec = timestamp.nsec;
+    
+    VampFeatureList *features = m_descriptor->process(m_handle,
+                                                      inputBuffers,
+                                                      sec, nsec);
+    
+    convertFeatures(features, fs);
+    m_descriptor->releaseFeatureSet(features);
+    return fs;
+}
+
+PluginHostAdapter::FeatureSet
+PluginHostAdapter::getRemainingFeatures()
+{
+    FeatureSet fs;
+    if (!m_handle) return fs;
+    
+    VampFeatureList *features = m_descriptor->getRemainingFeatures(m_handle); 
+
+    convertFeatures(features, fs);
+    m_descriptor->releaseFeatureSet(features);
+    return fs;
+}
+
+void
+PluginHostAdapter::convertFeatures(VampFeatureList *features,
+                                   FeatureSet &fs)
+{
+    if (!features) return;
+
+    unsigned int outputs = m_descriptor->getOutputCount(m_handle);
+
+    for (unsigned int i = 0; i < outputs; ++i) {
+        
+        VampFeatureList &list = features[i];
+
+        if (list.featureCount > 0) {
+
+            Feature feature;
+            feature.values.reserve(list.features[0].v1.valueCount);
+
+            for (unsigned int j = 0; j < list.featureCount; ++j) {
+
+                feature.hasTimestamp = list.features[j].v1.hasTimestamp;
+                feature.timestamp = RealTime(list.features[j].v1.sec,
+                                             list.features[j].v1.nsec);
+                feature.hasDuration = false;
+
+                if (m_descriptor->vampApiVersion >= 2) {
+                    unsigned int j2 = j + list.featureCount;
+                    feature.hasDuration = list.features[j2].v2.hasDuration;
+                    feature.duration = RealTime(list.features[j2].v2.durationSec,
+                                                list.features[j2].v2.durationNsec);
+                }
+
+                for (unsigned int k = 0; k < list.features[j].v1.valueCount; ++k) {
+                    feature.values.push_back(list.features[j].v1.values[k]);
+                }
+
+                if (list.features[j].v1.label) {
+                    feature.label = list.features[j].v1.label;
+                }
+
+                fs[i].push_back(feature);
+
+                if (list.features[j].v1.valueCount > 0) {
+                    feature.values.clear();
+                }
+
+                if (list.features[j].v1.label) {
+                    feature.label = "";
+                }
+            }
+        }
+    }
+}
+
+}
diff -r f8b38a017d9a -r 14029eb08472 src/RealTime.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/RealTime.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,245 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+/*
+   This is a modified version of a source file from the 
+   Rosegarden MIDI and audio sequencer and notation editor.
+   This file copyright 2000-2006 Chris Cannam.
+   Relicensed by the author as detailed above.
+*/
+
+#include <iostream>
+
+#if (__GNUC__ < 3)
+#include <strstream>
+#define stringstream strstream
+#else
+#include <sstream>
+#endif
+
+using std::cerr;
+using std::endl;
+
+#include "RealTime.h"
+
+#ifndef _WIN32
+#include <sys/time.h>
+#endif
+
+namespace Vamp {
+
+// A RealTime consists of two ints that must be at least 32 bits each.
+// A signed 32-bit int can store values exceeding +/- 2 billion.  This
+// means we can safely use our lower int for nanoseconds, as there are
+// 1 billion nanoseconds in a second and we need to handle double that
+// because of the implementations of addition etc that we use.
+//
+// The maximum valid RealTime on a 32-bit system is somewhere around
+// 68 years: 999999999 nanoseconds longer than the classic Unix epoch.
+
+#define ONE_BILLION 1000000000
+
+RealTime::RealTime(int s, int n) :
+    sec(s), nsec(n)
+{
+    if (sec == 0) {
+	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
+	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
+    } else if (sec < 0) {
+	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
+	while (nsec > 0)             { nsec -= ONE_BILLION; ++sec; }
+    } else { 
+	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
+	while (nsec < 0)             { nsec += ONE_BILLION; --sec; }
+    }
+}
+
+RealTime
+RealTime::fromSeconds(double sec)
+{
+    return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5));
+}
+
+RealTime
+RealTime::fromMilliseconds(int msec)
+{
+    return RealTime(msec / 1000, (msec % 1000) * 1000000);
+}
+
+#ifndef _WIN32
+RealTime
+RealTime::fromTimeval(const struct timeval &tv)
+{
+    return RealTime(tv.tv_sec, tv.tv_usec * 1000);
+}
+#endif
+
+std::ostream &operator<<(std::ostream &out, const RealTime &rt)
+{
+    if (rt < RealTime::zeroTime) {
+	out << "-";
+    } else {
+	out << " ";
+    }
+
+    int s = (rt.sec < 0 ? -rt.sec : rt.sec);
+    int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec);
+
+    out << s << ".";
+
+    int nn(n);
+    if (nn == 0) out << "00000000";
+    else while (nn < (ONE_BILLION / 10)) {
+	out << "0";
+	nn *= 10;
+    }
+    
+    out << n << "R";
+    return out;
+}
+
+std::string
+RealTime::toString() const
+{
+    std::stringstream out;
+    out << *this;
+    
+#if (__GNUC__ < 3)
+    out << std::ends;
+#endif
+
+    std::string s = out.str();
+
+    // remove trailing R
+    return s.substr(0, s.length() - 1);
+}
+
+std::string
+RealTime::toText(bool fixedDp) const
+{
+    if (*this < RealTime::zeroTime) return "-" + (-*this).toText();
+
+    std::stringstream out;
+
+    if (sec >= 3600) {
+	out << (sec / 3600) << ":";
+    }
+
+    if (sec >= 60) {
+	out << (sec % 3600) / 60 << ":";
+    }
+
+    if (sec >= 10) {
+	out << ((sec % 60) / 10);
+    }
+
+    out << (sec % 10);
+    
+    int ms = msec();
+
+    if (ms != 0) {
+	out << ".";
+	out << (ms / 100);
+	ms = ms % 100;
+	if (ms != 0) {
+	    out << (ms / 10);
+	    ms = ms % 10;
+	} else if (fixedDp) {
+	    out << "0";
+	}
+	if (ms != 0) {
+	    out << ms;
+	} else if (fixedDp) {
+	    out << "0";
+	}
+    } else if (fixedDp) {
+	out << ".000";
+    }
+	
+#if (__GNUC__ < 3)
+    out << std::ends;
+#endif
+
+    std::string s = out.str();
+
+    return s;
+}
+
+
+RealTime
+RealTime::operator/(int d) const
+{
+    int secdiv = sec / d;
+    int secrem = sec % d;
+
+    double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d;
+    
+    return RealTime(secdiv, int(nsecdiv + 0.5));
+}
+
+double 
+RealTime::operator/(const RealTime &r) const
+{
+    double lTotal = double(sec) * ONE_BILLION + double(nsec);
+    double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec);
+    
+    if (rTotal == 0) return 0.0;
+    else return lTotal/rTotal;
+}
+
+long
+RealTime::realTime2Frame(const RealTime &time, unsigned int sampleRate)
+{
+    if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
+    double s = time.sec + double(time.nsec + 1) / 1000000000.0;
+    return long(s * sampleRate);
+}
+
+RealTime
+RealTime::frame2RealTime(long frame, unsigned int sampleRate)
+{
+    if (frame < 0) return -frame2RealTime(-frame, sampleRate);
+
+    RealTime rt;
+    rt.sec = frame / long(sampleRate);
+    frame -= rt.sec * long(sampleRate);
+    rt.nsec = (int)(((double(frame) * 1000000.0) / sampleRate) * 1000.0);
+    return rt;
+}
+
+const RealTime RealTime::zeroTime(0,0);
+
+}
diff -r f8b38a017d9a -r 14029eb08472 src/SpectralCentroid.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/SpectralCentroid.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,196 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "SpectralCentroid.h"
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+#include <math.h>
+
+#ifdef WIN32
+#define isnan(x) false
+#define isinf(x) false
+#endif
+
+SpectralCentroid::SpectralCentroid(float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_stepSize(0),
+    m_blockSize(0)
+{
+}
+
+SpectralCentroid::~SpectralCentroid()
+{
+}
+
+string
+SpectralCentroid::getIdentifier() const
+{
+    return "spectralcentroid";
+}
+
+string
+SpectralCentroid::getName() const
+{
+    return "Spectral Centroid";
+}
+
+string
+SpectralCentroid::getDescription() const
+{
+    return "Calculate the centroid frequency of the spectrum of the input signal";
+}
+
+string
+SpectralCentroid::getMaker() const
+{
+    return "Vamp SDK Example Plugins";
+}
+
+int
+SpectralCentroid::getPluginVersion() const
+{
+    return 2;
+}
+
+string
+SpectralCentroid::getCopyright() const
+{
+    return "Freely redistributable (BSD license)";
+}
+
+bool
+SpectralCentroid::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = stepSize;
+    m_blockSize = blockSize;
+
+    return true;
+}
+
+void
+SpectralCentroid::reset()
+{
+}
+
+SpectralCentroid::OutputList
+SpectralCentroid::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor d;
+    d.identifier = "logcentroid";
+    d.name = "Log Frequency Centroid";
+    d.description = "Centroid of the log weighted frequency spectrum";
+    d.unit = "Hz";
+    d.hasFixedBinCount = true;
+    d.binCount = 1;
+    d.hasKnownExtents = false;
+    d.isQuantized = false;
+    d.sampleType = OutputDescriptor::OneSamplePerStep;
+    list.push_back(d);
+
+    d.identifier = "linearcentroid";
+    d.name = "Linear Frequency Centroid";
+    d.description = "Centroid of the linear frequency spectrum";
+    list.push_back(d);
+
+    return list;
+}
+
+//static int scount = 0;
+
+SpectralCentroid::FeatureSet
+SpectralCentroid::process(const float *const *inputBuffers, Vamp::RealTime timestamp)
+{
+    if (m_stepSize == 0) {
+	cerr << "ERROR: SpectralCentroid::process: "
+	     << "SpectralCentroid has not been initialised"
+	     << endl;
+	return FeatureSet();
+    }
+
+//    std::cerr << "SpectralCentroid::process: count = " << scount++ << ", timestamp = " << timestamp << ", total power = ";
+
+    double numLin = 0.0, numLog = 0.0, denom = 0.0;
+
+    for (size_t i = 1; i <= m_blockSize/2; ++i) {
+	double freq = (double(i) * m_inputSampleRate) / m_blockSize;
+	double real = inputBuffers[0][i*2];
+	double imag = inputBuffers[0][i*2 + 1];
+	double power = sqrt(real * real + imag * imag) / (m_blockSize/2);
+	numLin += freq * power;
+        numLog += log10f(freq) * power;
+	denom += power;
+    }
+
+//    std::cerr << denom << std::endl;
+
+    FeatureSet returnFeatures;
+
+    if (denom != 0.0) {
+	float centroidLin = float(numLin / denom);
+	float centroidLog = powf(10, float(numLog / denom));
+
+	Feature feature;
+	feature.hasTimestamp = false;
+    if (!isnan(centroidLog) && !isinf(centroidLog)) {
+        feature.values.push_back(centroidLog);
+    }
+	returnFeatures[0].push_back(feature);
+
+    feature.values.clear();
+    if (!isnan(centroidLin) && !isinf(centroidLin)) {
+        feature.values.push_back(centroidLin);
+    }
+	returnFeatures[1].push_back(feature);
+    }
+
+    return returnFeatures;
+}
+
+SpectralCentroid::FeatureSet
+SpectralCentroid::getRemainingFeatures()
+{
+    return FeatureSet();
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/ZeroCrossing.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ZeroCrossing.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,206 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "ZeroCrossing.h"
+
+using std::string;
+using std::vector;
+using std::cerr;
+using std::endl;
+
+#include <cmath>
+
+ZeroCrossing::ZeroCrossing(float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_stepSize(0),
+    m_previousSample(0.0f)
+{
+}
+
+ZeroCrossing::~ZeroCrossing()
+{
+}
+
+string
+ZeroCrossing::getIdentifier() const
+{
+    return "zerocrossing";
+}
+
+string
+ZeroCrossing::getName() const
+{
+    return "Zero Crossings";
+}
+
+string
+ZeroCrossing::getDescription() const
+{
+    return "Detect and count zero crossing points";
+}
+
+string
+ZeroCrossing::getMaker() const
+{
+    return "Vamp SDK Example Plugins";
+}
+
+int
+ZeroCrossing::getPluginVersion() const
+{
+    return 2;
+}
+
+string
+ZeroCrossing::getCopyright() const
+{
+    return "Freely redistributable (BSD license)";
+}
+
+bool
+ZeroCrossing::initialise(size_t channels, size_t stepSize, size_t blockSize)
+{
+    if (channels < getMinChannelCount() ||
+	channels > getMaxChannelCount()) return false;
+
+    m_stepSize = std::min(stepSize, blockSize);
+
+    return true;
+}
+
+void
+ZeroCrossing::reset()
+{
+    m_previousSample = 0.0f;
+}
+
+ZeroCrossing::OutputList
+ZeroCrossing::getOutputDescriptors() const
+{
+    OutputList list;
+
+    OutputDescriptor zc;
+    zc.identifier = "counts";
+    zc.name = "Zero Crossing Counts";
+    zc.description = "The number of zero crossing points per processing block";
+    zc.unit = "crossings";
+    zc.hasFixedBinCount = true;
+    zc.binCount = 1;
+    zc.hasKnownExtents = false;
+    zc.isQuantized = true;
+    zc.quantizeStep = 1.0;
+    zc.sampleType = OutputDescriptor::OneSamplePerStep;
+    list.push_back(zc);
+
+    zc.identifier = "zerocrossings";
+    zc.name = "Zero Crossings";
+    zc.description = "The locations of zero crossing points";
+    zc.unit = "";
+    zc.hasFixedBinCount = true;
+    zc.binCount = 0;
+    zc.sampleType = OutputDescriptor::VariableSampleRate;
+    zc.sampleRate = m_inputSampleRate;
+    list.push_back(zc);
+
+    return list;
+}
+
+//static int scount = 0;
+
+ZeroCrossing::FeatureSet
+ZeroCrossing::process(const float *const *inputBuffers,
+                      Vamp::RealTime timestamp)
+{
+    if (m_stepSize == 0) {
+	cerr << "ERROR: ZeroCrossing::process: "
+	     << "ZeroCrossing has not been initialised"
+	     << endl;
+	return FeatureSet();
+    }
+
+//    std::cerr << "ZeroCrossing::process: count = " << scount++ << ", timestamp = " << timestamp << ", rms = ";
+
+    float prev = m_previousSample;
+    size_t count = 0;
+
+    FeatureSet returnFeatures;
+
+//    double acc = 0.0;
+
+    for (size_t i = 0; i < m_stepSize; ++i) {
+
+	float sample = inputBuffers[0][i];
+	bool crossing = false;
+
+	if (sample <= 0.0) {
+	    if (prev > 0.0) crossing = true;
+	} else if (sample > 0.0) {
+	    if (prev <= 0.0) crossing = true;
+	}
+
+	if (crossing) {
+	    ++count; 
+	    Feature feature;
+	    feature.hasTimestamp = true;
+	    feature.timestamp = timestamp +
+		Vamp::RealTime::frame2RealTime(i, (size_t)m_inputSampleRate);
+	    returnFeatures[1].push_back(feature);
+	}
+
+//        acc += sample * sample;
+
+	prev = sample;
+    }
+
+//    acc /= m_stepSize;
+//    std::cerr << sqrt(acc) << std::endl;
+
+    m_previousSample = prev;
+
+    Feature feature;
+    feature.hasTimestamp = false;
+    feature.values.push_back(count);
+
+    returnFeatures[0].push_back(feature);
+    return returnFeatures;
+}
+
+ZeroCrossing::FeatureSet
+ZeroCrossing::getRemainingFeatures()
+{
+    return FeatureSet();
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/plugins.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/plugins.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,66 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "vamp/vamp.h"
+#include "vamp-sdk/PluginAdapter.h"
+
+#include "ZeroCrossing.h"
+#include "SpectralCentroid.h"
+#include "PercussionOnsetDetector.h"
+#include "FixedTempoEstimator.h"
+#include "AmplitudeFollower.h"
+
+static Vamp::PluginAdapter<ZeroCrossing> zeroCrossingAdapter;
+static Vamp::PluginAdapter<SpectralCentroid> spectralCentroidAdapter;
+static Vamp::PluginAdapter<PercussionOnsetDetector> percussionOnsetAdapter;
+static Vamp::PluginAdapter<FixedTempoEstimator> fixedTempoAdapter;
+static Vamp::PluginAdapter<AmplitudeFollower> amplitudeAdapter;
+
+const VampPluginDescriptor *vampGetPluginDescriptor(unsigned int version,
+                                                    unsigned int index)
+{
+    if (version < 1) return 0;
+
+    switch (index) {
+    case  0: return zeroCrossingAdapter.getDescriptor();
+    case  1: return spectralCentroidAdapter.getDescriptor();
+    case  2: return percussionOnsetAdapter.getDescriptor();
+    case  3: return amplitudeAdapter.getDescriptor();
+    case  4: return fixedTempoAdapter.getDescriptor();
+    default: return 0;
+    }
+}
+
diff -r f8b38a017d9a -r 14029eb08472 src/vamp-simple-host.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/vamp-simple-host.cpp	Thu Nov 06 14:05:33 2008 +0000
@@ -0,0 +1,644 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006 Chris Cannam.
+    FFT code from Don Cross's public domain FFT implementation.
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#include "vamp-sdk/PluginHostAdapter.h"
+#include "vamp-sdk/hostext/PluginInputDomainAdapter.h"
+#include "vamp-sdk/hostext/PluginLoader.h"
+#include "vamp/vamp.h"
+
+#include <iostream>
+#include <fstream>
+#include <set>
+#include <sndfile.h>
+
+#include <cstring>
+#include <cstdlib>
+
+#include "system.h"
+
+#include <cmath>
+
+using namespace std;
+
+using Vamp::Plugin;
+using Vamp::PluginHostAdapter;
+using Vamp::RealTime;
+using Vamp::HostExt::PluginLoader;
+using Vamp::HostExt::PluginWrapper;
+using Vamp::HostExt::PluginInputDomainAdapter;
+
+#define HOST_VERSION "1.3"
+
+enum Verbosity {
+    PluginIds,
+    PluginOutputIds,
+    PluginInformation
+};
+
+void printFeatures(int, int, int, Plugin::FeatureSet, ofstream *, bool frames);
+void transformInput(float *, size_t);
+void fft(unsigned int, bool, double *, double *, double *, double *);
+void printPluginPath(bool verbose);
+void printPluginCategoryList();
+void enumeratePlugins(Verbosity);
+void listPluginsInLibrary(string soname);
+int runPlugin(string myname, string soname, string id, string output,
+              int outputNo, string inputFile, string outfilename, bool frames);
+
+void usage(const char *name)
+{
+    cerr << "\n"
+         << name << ": A simple Vamp plugin host.\n\n"
+        "Centre for Digital Music, Queen Mary, University of London.\n"
+        "Copyright 2006-2007 Chris Cannam and QMUL.\n"
+        "Freely redistributable; published under a BSD-style license.\n\n"
+        "Usage:\n\n"
+        "  " << name << " [-s] pluginlibrary[." << PLUGIN_SUFFIX << "]:plugin[:output] file.wav [-o out.txt]\n"
+        "  " << name << " [-s] pluginlibrary[." << PLUGIN_SUFFIX << "]:plugin file.wav [outputno] [-o out.txt]\n\n"
+        "    -- Load plugin id \"plugin\" from \"pluginlibrary\" and run it on the\n"
+        "       audio data in \"file.wav\", retrieving the named \"output\", or output\n"
+        "       number \"outputno\" (the first output by default) and dumping it to\n"
+        "       standard output, or to \"out.txt\" if the -o option is given.\n\n"
+        "       \"pluginlibrary\" should be a library name, not a file path; the\n"
+        "       standard Vamp library search path will be used to locate it.  If\n"
+        "       a file path is supplied, the directory part(s) will be ignored.\n\n"
+        "       If the -s option is given, results will be labelled with the audio\n"
+        "       sample frame at which they occur. Otherwise, they will be labelled\n"
+        "       with time in seconds.\n\n"
+        "  " << name << " -l\n\n"
+        "    -- List the plugin libraries and Vamp plugins in the library search path\n"
+        "       in a verbose human-readable format.\n\n"
+        "  " << name << " --list-ids\n\n"
+        "    -- List the plugins in the search path in a terse machine-readable format,\n"
+        "       in the form vamp:soname:identifier.\n\n"
+        "  " << name << " --list-outputs\n\n"
+        "    -- List the outputs for plugins in the search path in a machine-readable\n"
+        "       format, in the form vamp:soname:identifier:output.\n\n"
+        "  " << name << " --list-by-category\n\n"
+        "    -- List the plugins as a plugin index by category, in a machine-readable\n"
+        "       format.  The format may change in future releases.\n\n"
+        "  " << name << " -p\n\n"
+        "    -- Print out the Vamp library search path.\n\n"
+        "  " << name << " -v\n\n"
+        "    -- Display version information only.\n"
+         << endl;
+    exit(2);
+}
+
+int main(int argc, char **argv)
+{
+    char *scooter = argv[0];
+    char *name = 0;
+    while (scooter && *scooter) {
+        if (*scooter == '/' || *scooter == '\\') name = ++scooter;
+        else ++scooter;
+    }
+    if (!name || !*name) name = argv[0];
+    
+    if (argc < 2) usage(name);
+
+    if (argc == 2) {
+
+        if (!strcmp(argv[1], "-v")) {
+
+            cout << "Simple Vamp plugin host version: " << HOST_VERSION << endl
+                 << "Vamp API version: " << VAMP_API_VERSION << endl
+                 << "Vamp SDK version: " << VAMP_SDK_VERSION << endl;
+            return 0;
+
+        } else if (!strcmp(argv[1], "-l")) {
+
+            printPluginPath(true);
+            enumeratePlugins(PluginInformation);
+            return 0;
+
+        } else if (!strcmp(argv[1], "-p")) {
+
+            printPluginPath(false);
+            return 0;
+
+        } else if (!strcmp(argv[1], "--list-ids")) {
+
+            enumeratePlugins(PluginIds);
+            return 0;
+
+        } else if (!strcmp(argv[1], "--list-outputs")) {
+
+            enumeratePlugins(PluginOutputIds);
+            return 0;
+
+        } else if (!strcmp(argv[1], "--list-by-category")) {
+
+            printPluginCategoryList();
+            return 0;
+
+        } else usage(name);
+    }
+
+    if (argc < 3) usage(name);
+
+    bool useFrames = false;
+    
+    int base = 1;
+    if (!strcmp(argv[1], "-s")) {
+        useFrames = true;
+        base = 2;
+    }
+
+    string soname = argv[base];
+    string wavname = argv[base+1];
+    string plugid = "";
+    string output = "";
+    int outputNo = -1;
+    string outfilename;
+
+    if (argc >= base+3) {
+
+        int idx = base+2;
+
+        if (isdigit(*argv[idx])) {
+            outputNo = atoi(argv[idx++]);
+        }
+
+        if (argc == idx + 2) {
+            if (!strcmp(argv[idx], "-o")) {
+                outfilename = argv[idx+1];
+            } else usage(name);
+        } else if (argc != idx) {
+            (usage(name));
+        }
+    }
+
+    cerr << endl << name << ": Running..." << endl;
+
+    cerr << "Reading file: \"" << wavname << "\", writing to ";
+    if (outfilename == "") {
+        cerr << "standard output" << endl;
+    } else {
+        cerr << "\"" << outfilename << "\"" << endl;
+    }
+
+    string::size_type sep = soname.find(':');
+
+    if (sep != string::npos) {
+        plugid = soname.substr(sep + 1);
+        soname = soname.substr(0, sep);
+
+        sep = plugid.find(':');
+        if (sep != string::npos) {
+            output = plugid.substr(sep + 1);
+            plugid = plugid.substr(0, sep);
+        }
+    }
+
+    if (plugid == "") {
+        usage(name);
+    }
+
+    if (output != "" && outputNo != -1) {
+        usage(name);
+    }
+
+    if (output == "" && outputNo == -1) {
+        outputNo = 0;
+    }
+
+    return runPlugin(name, soname, plugid, output, outputNo,
+                     wavname, outfilename, useFrames);
+}
+
+
+int runPlugin(string myname, string soname, string id,
+              string output, int outputNo, string wavname,
+              string outfilename, bool useFrames)
+{
+    PluginLoader *loader = PluginLoader::getInstance();
+
+    PluginLoader::PluginKey key = loader->composePluginKey(soname, id);
+    
+    SNDFILE *sndfile;
+    SF_INFO sfinfo;
+    memset(&sfinfo, 0, sizeof(SF_INFO));
+
+    sndfile = sf_open(wavname.c_str(), SFM_READ, &sfinfo);
+    if (!sndfile) {
+	cerr << myname << ": ERROR: Failed to open input file \""
+             << wavname << "\": " << sf_strerror(sndfile) << endl;
+	return 1;
+    }
+
+    ofstream *out = 0;
+    if (outfilename != "") {
+        out = new ofstream(outfilename.c_str(), ios::out);
+        if (!*out) {
+            cerr << myname << ": ERROR: Failed to open output file \""
+                 << outfilename << "\" for writing" << endl;
+            delete out;
+            return 1;
+        }
+    }
+
+    Plugin *plugin = loader->loadPlugin
+        (key, sfinfo.samplerate, PluginLoader::ADAPT_ALL_SAFE);
+    if (!plugin) {
+        cerr << myname << ": ERROR: Failed to load plugin \"" << id
+             << "\" from library \"" << soname << "\"" << endl;
+        sf_close(sndfile);
+        if (out) {
+            out->close();
+            delete out;
+        }
+        return 1;
+    }
+
+    cerr << "Running plugin: \"" << plugin->getIdentifier() << "\"..." << endl;
+
+    int blockSize = plugin->getPreferredBlockSize();
+    int stepSize = plugin->getPreferredStepSize();
+
+    if (blockSize == 0) {
+        blockSize = 1024;
+    }
+    if (stepSize == 0) {
+        if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
+            stepSize = blockSize/2;
+        } else {
+            stepSize = blockSize;
+        }
+    } else if (stepSize > blockSize) {
+        cerr << "WARNING: stepSize " << stepSize << " > blockSize " << blockSize << ", resetting blockSize to ";
+        if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
+            blockSize = stepSize * 2;
+        } else {
+            blockSize = stepSize;
+        }
+        cerr << blockSize << endl;
+    }
+
+    int channels = sfinfo.channels;
+
+    float *filebuf = new float[blockSize * channels];
+    float **plugbuf = new float*[channels];
+    for (int c = 0; c < channels; ++c) plugbuf[c] = new float[blockSize + 2];
+
+    cerr << "Using block size = " << blockSize << ", step size = "
+              << stepSize << endl;
+
+    int minch = plugin->getMinChannelCount();
+    int maxch = plugin->getMaxChannelCount();
+    cerr << "Plugin accepts " << minch << " -> " << maxch << " channel(s)" << endl;
+    cerr << "Sound file has " << channels << " (will mix/augment if necessary)" << endl;
+
+    Plugin::OutputList outputs = plugin->getOutputDescriptors();
+    Plugin::OutputDescriptor od;
+
+    int returnValue = 1;
+    int progress = 0;
+
+    RealTime rt;
+    PluginWrapper *wrapper = 0;
+    RealTime adjustment = RealTime::zeroTime;
+
+    if (outputs.empty()) {
+	cerr << "ERROR: Plugin has no outputs!" << endl;
+        goto done;
+    }
+
+    if (outputNo < 0) {
+
+        for (size_t oi = 0; oi < outputs.size(); ++oi) {
+            if (outputs[oi].identifier == output) {
+                outputNo = oi;
+                break;
+            }
+        }
+
+        if (outputNo < 0) {
+            cerr << "ERROR: Non-existent output \"" << output << "\" requested" << endl;
+            goto done;
+        }
+
+    } else {
+
+        if (int(outputs.size()) <= outputNo) {
+            cerr << "ERROR: Output " << outputNo << " requested, but plugin has only " << outputs.size() << " output(s)" << endl;
+            goto done;
+        }        
+    }
+
+    od = outputs[outputNo];
+    cerr << "Output is: \"" << od.identifier << "\"" << endl;
+
+    if (!plugin->initialise(channels, stepSize, blockSize)) {
+        cerr << "ERROR: Plugin initialise (channels = " << channels
+             << ", stepSize = " << stepSize << ", blockSize = "
+             << blockSize << ") failed." << endl;
+        goto done;
+    }
+
+    wrapper = dynamic_cast<PluginWrapper *>(plugin);
+    if (wrapper) {
+        PluginInputDomainAdapter *ida =
+            wrapper->getWrapper<PluginInputDomainAdapter>();
+        if (ida) adjustment = ida->getTimestampAdjustment();
+    }
+
+    for (size_t i = 0; i < sfinfo.frames; i += stepSize) {
+
+        int count;
+
+        if (sf_seek(sndfile, i, SEEK_SET) < 0) {
+            cerr << "ERROR: sf_seek failed: " << sf_strerror(sndfile) << endl;
+            break;
+        }
+        
+        if ((count = sf_readf_float(sndfile, filebuf, blockSize)) < 0) {
+            cerr << "ERROR: sf_readf_float failed: " << sf_strerror(sndfile) << endl;
+            break;
+        }
+
+        for (int c = 0; c < channels; ++c) {
+            int j = 0;
+            while (j < count) {
+                plugbuf[c][j] = filebuf[j * sfinfo.channels + c];
+                ++j;
+            }
+            while (j < blockSize) {
+                plugbuf[c][j] = 0.0f;
+                ++j;
+            }
+        }
+
+        rt = RealTime::frame2RealTime(i, sfinfo.samplerate);
+
+        printFeatures
+            (RealTime::realTime2Frame(rt + adjustment, sfinfo.samplerate),
+             sfinfo.samplerate, outputNo, plugin->process(plugbuf, rt),
+             out, useFrames);
+
+        int pp = progress;
+        progress = lrintf((float(i) / sfinfo.frames) * 100.f);
+        if (progress != pp && out) {
+            cerr << "\r" << progress << "%";
+        }
+    }
+    if (out) cerr << "\rDone" << endl;
+
+    rt = RealTime::frame2RealTime(sfinfo.frames, sfinfo.samplerate);
+
+    printFeatures(RealTime::realTime2Frame(rt + adjustment, sfinfo.samplerate),
+                  sfinfo.samplerate, outputNo,
+                  plugin->getRemainingFeatures(), out, useFrames);
+
+    returnValue = 0;
+
+done:
+    delete plugin;
+    if (out) {
+        out->close();
+        delete out;
+    }
+    sf_close(sndfile);
+    return returnValue;
+}
+
+void
+printFeatures(int frame, int sr, int output,
+              Plugin::FeatureSet features, ofstream *out, bool useFrames)
+{
+    for (unsigned int i = 0; i < features[output].size(); ++i) {
+
+        if (useFrames) {
+
+            int displayFrame = frame;
+
+            if (features[output][i].hasTimestamp) {
+                displayFrame = RealTime::realTime2Frame
+                    (features[output][i].timestamp, sr);
+            }
+
+            (out ? *out : cout) << displayFrame;
+
+            if (features[output][i].hasDuration) {
+                displayFrame = RealTime::realTime2Frame
+                    (features[output][i].duration, sr);
+                (out ? *out : cout) << "," << displayFrame;
+            }
+
+            (out ? *out : cout)  << ":";
+
+        } else {
+
+            RealTime rt = RealTime::frame2RealTime(frame, sr);
+
+            if (features[output][i].hasTimestamp) {
+                rt = features[output][i].timestamp;
+            }
+
+            (out ? *out : cout) << rt.toString();
+
+            if (features[output][i].hasDuration) {
+                rt = features[output][i].duration;
+                (out ? *out : cout) << "," << rt.toString();
+            }
+
+            (out ? *out : cout) << ":";
+        }
+
+        for (unsigned int j = 0; j < features[output][i].values.size(); ++j) {
+            (out ? *out : cout) << " " << features[output][i].values[j];
+        }
+
+        (out ? *out : cout) << endl;
+    }
+}
+
+void
+printPluginPath(bool verbose)
+{
+    if (verbose) {
+        cout << "\nVamp plugin search path: ";
+    }
+
+    vector<string> path = PluginHostAdapter::getPluginPath();
+    for (size_t i = 0; i < path.size(); ++i) {
+        if (verbose) {
+            cout << "[" << path[i] << "]";
+        } else {
+            cout << path[i] << endl;
+        }
+    }
+
+    if (verbose) cout << endl;
+}
+
+void
+enumeratePlugins(Verbosity verbosity)
+{
+    PluginLoader *loader = PluginLoader::getInstance();
+
+    if (verbosity == PluginInformation) {
+        cout << "\nVamp plugin libraries found in search path:" << endl;
+    }
+
+    vector<PluginLoader::PluginKey> plugins = loader->listPlugins();
+    typedef multimap<string, PluginLoader::PluginKey>
+        LibraryMap;
+    LibraryMap libraryMap;
+
+    for (size_t i = 0; i < plugins.size(); ++i) {
+        string path = loader->getLibraryPathForPlugin(plugins[i]);
+        libraryMap.insert(LibraryMap::value_type(path, plugins[i]));
+    }
+
+    string prevPath = "";
+    int index = 0;
+
+    for (LibraryMap::iterator i = libraryMap.begin();
+         i != libraryMap.end(); ++i) {
+        
+        string path = i->first;
+        PluginLoader::PluginKey key = i->second;
+
+        if (path != prevPath) {
+            prevPath = path;
+            index = 0;
+            if (verbosity == PluginInformation) {
+                cout << "\n  " << path << ":" << endl;
+            }
+        }
+
+        Plugin *plugin = loader->loadPlugin(key, 48000);
+        if (plugin) {
+
+            char c = char('A' + index);
+            if (c > 'Z') c = char('a' + (index - 26));
+
+            if (verbosity == PluginInformation) {
+
+                cout << "    [" << c << "] [v"
+                     << plugin->getVampApiVersion() << "] "
+                     << plugin->getName() << ", \""
+                     << plugin->getIdentifier() << "\"" << " ["
+                     << plugin->getMaker() << "]" << endl;
+
+                PluginLoader::PluginCategoryHierarchy category =
+                    loader->getPluginCategory(key);
+
+                if (!category.empty()) {
+                    cout << "       ";
+                    for (size_t ci = 0; ci < category.size(); ++ci) {
+                        cout << " > " << category[ci];
+                    }
+                    cout << endl;
+                }
+
+                if (plugin->getDescription() != "") {
+                    cout << "        - " << plugin->getDescription() << endl;
+                }
+
+            } else if (verbosity == PluginIds) {
+                cout << "vamp:" << key << endl;
+            }
+            
+            Plugin::OutputList outputs =
+                plugin->getOutputDescriptors();
+
+            if (outputs.size() > 1 || verbosity == PluginOutputIds) {
+                for (size_t j = 0; j < outputs.size(); ++j) {
+                    if (verbosity == PluginInformation) {
+                        cout << "         (" << j << ") "
+                             << outputs[j].name << ", \""
+                             << outputs[j].identifier << "\"" << endl;
+                        if (outputs[j].description != "") {
+                            cout << "             - " 
+                                 << outputs[j].description << endl;
+                        }
+                    } else if (verbosity == PluginOutputIds) {
+                        cout << "vamp:" << key << ":" << outputs[j].identifier << endl;
+                    }
+                }
+            }
+
+            ++index;
+
+            delete plugin;
+        }
+    }
+
+    if (verbosity == PluginInformation) {
+        cout << endl;
+    }
+}
+
+void
+printPluginCategoryList()
+{
+    PluginLoader *loader = PluginLoader::getInstance();
+
+    vector<PluginLoader::PluginKey> plugins = loader->listPlugins();
+
+    set<string> printedcats;
+
+    for (size_t i = 0; i < plugins.size(); ++i) {
+
+        PluginLoader::PluginKey key = plugins[i];
+        
+        PluginLoader::PluginCategoryHierarchy category =
+            loader->getPluginCategory(key);
+
+        Plugin *plugin = loader->loadPlugin(key, 48000);
+        if (!plugin) continue;
+
+        string catstr = "";
+
+        if (category.empty()) catstr = '|';
+        else {
+            for (size_t j = 0; j < category.size(); ++j) {
+                catstr += category[j];
+                catstr += '|';
+                if (printedcats.find(catstr) == printedcats.end()) {
+                    std::cout << catstr << std::endl;
+                    printedcats.insert(catstr);
+                }
+            }
+        }
+
+        std::cout << catstr << key << ":::" << plugin->getName() << ":::" << plugin->getMaker() << ":::" << plugin->getDescription() << std::endl;
+    }
+}
+
diff -r f8b38a017d9a -r 14029eb08472 vamp-sdk/PluginAdapter.cpp
--- a/vamp-sdk/PluginAdapter.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,873 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "PluginAdapter.h"
-
-#include <cstring>
-#include <cstdlib>
-
-//#define DEBUG_PLUGIN_ADAPTER 1
-
-namespace Vamp {
-
-class PluginAdapterBase::Impl
-{
-public:
-    Impl(PluginAdapterBase *);
-    ~Impl();
-
-    const VampPluginDescriptor *getDescriptor();
-
-protected:
-    PluginAdapterBase *m_base;
-
-    static VampPluginHandle vampInstantiate(const VampPluginDescriptor *desc,
-                                            float inputSampleRate);
-
-    static void vampCleanup(VampPluginHandle handle);
-
-    static int vampInitialise(VampPluginHandle handle, unsigned int channels,
-                             unsigned int stepSize, unsigned int blockSize);
-
-    static void vampReset(VampPluginHandle handle);
-
-    static float vampGetParameter(VampPluginHandle handle, int param);
-    static void vampSetParameter(VampPluginHandle handle, int param, float value);
-
-    static unsigned int vampGetCurrentProgram(VampPluginHandle handle);
-    static void vampSelectProgram(VampPluginHandle handle, unsigned int program);
-
-    static unsigned int vampGetPreferredStepSize(VampPluginHandle handle);
-    static unsigned int vampGetPreferredBlockSize(VampPluginHandle handle);
-    static unsigned int vampGetMinChannelCount(VampPluginHandle handle);
-    static unsigned int vampGetMaxChannelCount(VampPluginHandle handle);
-
-    static unsigned int vampGetOutputCount(VampPluginHandle handle);
-
-    static VampOutputDescriptor *vampGetOutputDescriptor(VampPluginHandle handle,
-                                                       unsigned int i);
-
-    static void vampReleaseOutputDescriptor(VampOutputDescriptor *desc);
-
-    static VampFeatureList *vampProcess(VampPluginHandle handle,
-                                        const float *const *inputBuffers,
-                                        int sec,
-                                        int nsec);
-
-    static VampFeatureList *vampGetRemainingFeatures(VampPluginHandle handle);
-
-    static void vampReleaseFeatureSet(VampFeatureList *fs);
-
-    void cleanup(Plugin *plugin);
-    void checkOutputMap(Plugin *plugin);
-    unsigned int getOutputCount(Plugin *plugin);
-    VampOutputDescriptor *getOutputDescriptor(Plugin *plugin,
-                                             unsigned int i);
-    VampFeatureList *process(Plugin *plugin,
-                             const float *const *inputBuffers,
-                             int sec, int nsec);
-    VampFeatureList *getRemainingFeatures(Plugin *plugin);
-    VampFeatureList *convertFeatures(Plugin *plugin,
-                                     const Plugin::FeatureSet &features);
-    
-    // maps both plugins and descriptors to adapters
-    typedef std::map<const void *, Impl *> AdapterMap;
-    static AdapterMap *m_adapterMap;
-    static Impl *lookupAdapter(VampPluginHandle);
-
-    bool m_populated;
-    VampPluginDescriptor m_descriptor;
-    Plugin::ParameterList m_parameters;
-    Plugin::ProgramList m_programs;
-    
-    typedef std::map<Plugin *, Plugin::OutputList *> OutputMap;
-    OutputMap m_pluginOutputs;
-
-    std::map<Plugin *, VampFeatureList *> m_fs;
-    std::map<Plugin *, std::vector<size_t> > m_fsizes;
-    std::map<Plugin *, std::vector<std::vector<size_t> > > m_fvsizes;
-    void resizeFS(Plugin *plugin, int n);
-    void resizeFL(Plugin *plugin, int n, size_t sz);
-    void resizeFV(Plugin *plugin, int n, int j, size_t sz);
-};
-
-PluginAdapterBase::PluginAdapterBase()
-{
-    m_impl = new Impl(this);
-}
-
-PluginAdapterBase::~PluginAdapterBase()
-{
-    delete m_impl;
-}
-
-const VampPluginDescriptor *
-PluginAdapterBase::getDescriptor()
-{
-    return m_impl->getDescriptor();
-}
-
-PluginAdapterBase::Impl::Impl(PluginAdapterBase *base) :
-    m_base(base),
-    m_populated(false)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl[" << this << "]::Impl" << std::endl;
-#endif
-}
-
-const VampPluginDescriptor *
-PluginAdapterBase::Impl::getDescriptor()
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl[" << this << "]::getDescriptor" << std::endl;
-#endif
-
-    if (m_populated) return &m_descriptor;
-
-    Plugin *plugin = m_base->createPlugin(48000);
-
-    if (plugin->getVampApiVersion() != VAMP_API_VERSION) {
-        std::cerr << "Vamp::PluginAdapterBase::Impl::getDescriptor: ERROR: "
-                  << "API version " << plugin->getVampApiVersion()
-                  << " for\nplugin \"" << plugin->getIdentifier() << "\" "
-                  << "differs from version "
-                  << VAMP_API_VERSION << " for adapter.\n"
-                  << "This plugin is probably linked against a different version of the Vamp SDK\n"
-                  << "from the version it was compiled with.  It will need to be re-linked correctly\n"
-                  << "before it can be used." << std::endl;
-        delete plugin;
-        return 0;
-    }
-
-    m_parameters = plugin->getParameterDescriptors();
-    m_programs = plugin->getPrograms();
-
-    m_descriptor.vampApiVersion = plugin->getVampApiVersion();
-    m_descriptor.identifier = strdup(plugin->getIdentifier().c_str());
-    m_descriptor.name = strdup(plugin->getName().c_str());
-    m_descriptor.description = strdup(plugin->getDescription().c_str());
-    m_descriptor.maker = strdup(plugin->getMaker().c_str());
-    m_descriptor.pluginVersion = plugin->getPluginVersion();
-    m_descriptor.copyright = strdup(plugin->getCopyright().c_str());
-    
-    m_descriptor.parameterCount = m_parameters.size();
-    m_descriptor.parameters = (const VampParameterDescriptor **)
-        malloc(m_parameters.size() * sizeof(VampParameterDescriptor));
-
-    unsigned int i;
-    
-    for (i = 0; i < m_parameters.size(); ++i) {
-        VampParameterDescriptor *desc = (VampParameterDescriptor *)
-            malloc(sizeof(VampParameterDescriptor));
-        desc->identifier = strdup(m_parameters[i].identifier.c_str());
-        desc->name = strdup(m_parameters[i].name.c_str());
-        desc->description = strdup(m_parameters[i].description.c_str());
-        desc->unit = strdup(m_parameters[i].unit.c_str());
-        desc->minValue = m_parameters[i].minValue;
-        desc->maxValue = m_parameters[i].maxValue;
-        desc->defaultValue = m_parameters[i].defaultValue;
-        desc->isQuantized = m_parameters[i].isQuantized;
-        desc->quantizeStep = m_parameters[i].quantizeStep;
-        desc->valueNames = 0;
-        if (desc->isQuantized && !m_parameters[i].valueNames.empty()) {
-            desc->valueNames = (const char **)
-                malloc((m_parameters[i].valueNames.size()+1) * sizeof(char *));
-            for (unsigned int j = 0; j < m_parameters[i].valueNames.size(); ++j) {
-                desc->valueNames[j] = strdup(m_parameters[i].valueNames[j].c_str());
-            }
-            desc->valueNames[m_parameters[i].valueNames.size()] = 0;
-        }
-        m_descriptor.parameters[i] = desc;
-    }
-    
-    m_descriptor.programCount = m_programs.size();
-    m_descriptor.programs = (const char **)
-        malloc(m_programs.size() * sizeof(const char *));
-    
-    for (i = 0; i < m_programs.size(); ++i) {
-        m_descriptor.programs[i] = strdup(m_programs[i].c_str());
-    }
-    
-    if (plugin->getInputDomain() == Plugin::FrequencyDomain) {
-        m_descriptor.inputDomain = vampFrequencyDomain;
-    } else {
-        m_descriptor.inputDomain = vampTimeDomain;
-    }
-
-    m_descriptor.instantiate = vampInstantiate;
-    m_descriptor.cleanup = vampCleanup;
-    m_descriptor.initialise = vampInitialise;
-    m_descriptor.reset = vampReset;
-    m_descriptor.getParameter = vampGetParameter;
-    m_descriptor.setParameter = vampSetParameter;
-    m_descriptor.getCurrentProgram = vampGetCurrentProgram;
-    m_descriptor.selectProgram = vampSelectProgram;
-    m_descriptor.getPreferredStepSize = vampGetPreferredStepSize;
-    m_descriptor.getPreferredBlockSize = vampGetPreferredBlockSize;
-    m_descriptor.getMinChannelCount = vampGetMinChannelCount;
-    m_descriptor.getMaxChannelCount = vampGetMaxChannelCount;
-    m_descriptor.getOutputCount = vampGetOutputCount;
-    m_descriptor.getOutputDescriptor = vampGetOutputDescriptor;
-    m_descriptor.releaseOutputDescriptor = vampReleaseOutputDescriptor;
-    m_descriptor.process = vampProcess;
-    m_descriptor.getRemainingFeatures = vampGetRemainingFeatures;
-    m_descriptor.releaseFeatureSet = vampReleaseFeatureSet;
-    
-    if (!m_adapterMap) {
-        m_adapterMap = new AdapterMap;
-    }
-    (*m_adapterMap)[&m_descriptor] = this;
-
-    delete plugin;
-
-    m_populated = true;
-    return &m_descriptor;
-}
-
-PluginAdapterBase::Impl::~Impl()
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl[" << this << "]::~Impl" << std::endl;
-#endif
-
-    if (!m_populated) return;
-
-    free((void *)m_descriptor.identifier);
-    free((void *)m_descriptor.name);
-    free((void *)m_descriptor.description);
-    free((void *)m_descriptor.maker);
-    free((void *)m_descriptor.copyright);
-        
-    for (unsigned int i = 0; i < m_descriptor.parameterCount; ++i) {
-        const VampParameterDescriptor *desc = m_descriptor.parameters[i];
-        free((void *)desc->identifier);
-        free((void *)desc->name);
-        free((void *)desc->description);
-        free((void *)desc->unit);
-        if (desc->valueNames) {
-            for (unsigned int j = 0; desc->valueNames[j]; ++j) {
-                free((void *)desc->valueNames[j]);
-            }
-            free((void *)desc->valueNames);
-        }
-    }
-    free((void *)m_descriptor.parameters);
-
-    for (unsigned int i = 0; i < m_descriptor.programCount; ++i) {
-        free((void *)m_descriptor.programs[i]);
-    }
-    free((void *)m_descriptor.programs);
-
-    if (m_adapterMap) {
-        
-        m_adapterMap->erase(&m_descriptor);
-
-        if (m_adapterMap->empty()) {
-            delete m_adapterMap;
-            m_adapterMap = 0;
-        }
-    }
-}
-
-PluginAdapterBase::Impl *
-PluginAdapterBase::Impl::lookupAdapter(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::lookupAdapter(" << handle << ")" << std::endl;
-#endif
-
-    if (!m_adapterMap) return 0;
-    AdapterMap::const_iterator i = m_adapterMap->find(handle);
-    if (i == m_adapterMap->end()) return 0;
-    return i->second;
-}
-
-VampPluginHandle
-PluginAdapterBase::Impl::vampInstantiate(const VampPluginDescriptor *desc,
-                                   float inputSampleRate)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampInstantiate(" << desc << ")" << std::endl;
-#endif
-
-    if (!m_adapterMap) {
-        m_adapterMap = new AdapterMap();
-    }
-
-    if (m_adapterMap->find(desc) == m_adapterMap->end()) {
-        std::cerr << "WARNING: PluginAdapterBase::Impl::vampInstantiate: Descriptor " << desc << " not in adapter map" << std::endl;
-        return 0;
-    }
-
-    Impl *adapter = (*m_adapterMap)[desc];
-    if (desc != &adapter->m_descriptor) return 0;
-
-    Plugin *plugin = adapter->m_base->createPlugin(inputSampleRate);
-    if (plugin) {
-        (*m_adapterMap)[plugin] = adapter;
-    }
-
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampInstantiate(" << desc << "): returning handle " << plugin << std::endl;
-#endif
-
-    return plugin;
-}
-
-void
-PluginAdapterBase::Impl::vampCleanup(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampCleanup(" << handle << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) {
-        delete ((Plugin *)handle);
-        return;
-    }
-    adapter->cleanup(((Plugin *)handle));
-}
-
-int
-PluginAdapterBase::Impl::vampInitialise(VampPluginHandle handle,
-                                  unsigned int channels,
-                                  unsigned int stepSize,
-                                  unsigned int blockSize)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampInitialise(" << handle << ", " << channels << ", " << stepSize << ", " << blockSize << ")" << std::endl;
-#endif
-
-    bool result = ((Plugin *)handle)->initialise
-        (channels, stepSize, blockSize);
-    return result ? 1 : 0;
-}
-
-void
-PluginAdapterBase::Impl::vampReset(VampPluginHandle handle) 
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampReset(" << handle << ")" << std::endl;
-#endif
-
-    ((Plugin *)handle)->reset();
-}
-
-float
-PluginAdapterBase::Impl::vampGetParameter(VampPluginHandle handle,
-                                    int param) 
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetParameter(" << handle << ", " << param << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return 0.0;
-    Plugin::ParameterList &list = adapter->m_parameters;
-    return ((Plugin *)handle)->getParameter(list[param].identifier);
-}
-
-void
-PluginAdapterBase::Impl::vampSetParameter(VampPluginHandle handle,
-                                    int param, float value)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampSetParameter(" << handle << ", " << param << ", " << value << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return;
-    Plugin::ParameterList &list = adapter->m_parameters;
-    ((Plugin *)handle)->setParameter(list[param].identifier, value);
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetCurrentProgram(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetCurrentProgram(" << handle << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return 0;
-    Plugin::ProgramList &list = adapter->m_programs;
-    std::string program = ((Plugin *)handle)->getCurrentProgram();
-    for (unsigned int i = 0; i < list.size(); ++i) {
-        if (list[i] == program) return i;
-    }
-    return 0;
-}
-
-void
-PluginAdapterBase::Impl::vampSelectProgram(VampPluginHandle handle,
-                                     unsigned int program)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampSelectProgram(" << handle << ", " << program << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return;
-    Plugin::ProgramList &list = adapter->m_programs;
-    ((Plugin *)handle)->selectProgram(list[program]);
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetPreferredStepSize(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetPreferredStepSize(" << handle << ")" << std::endl;
-#endif
-
-    return ((Plugin *)handle)->getPreferredStepSize();
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetPreferredBlockSize(VampPluginHandle handle) 
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetPreferredBlockSize(" << handle << ")" << std::endl;
-#endif
-
-    return ((Plugin *)handle)->getPreferredBlockSize();
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetMinChannelCount(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetMinChannelCount(" << handle << ")" << std::endl;
-#endif
-
-    return ((Plugin *)handle)->getMinChannelCount();
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetMaxChannelCount(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetMaxChannelCount(" << handle << ")" << std::endl;
-#endif
-
-    return ((Plugin *)handle)->getMaxChannelCount();
-}
-
-unsigned int
-PluginAdapterBase::Impl::vampGetOutputCount(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetOutputCount(" << handle << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-
-//    std::cerr << "vampGetOutputCount: handle " << handle << " -> adapter "<< adapter << std::endl;
-
-    if (!adapter) return 0;
-    return adapter->getOutputCount((Plugin *)handle);
-}
-
-VampOutputDescriptor *
-PluginAdapterBase::Impl::vampGetOutputDescriptor(VampPluginHandle handle,
-                                           unsigned int i)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetOutputDescriptor(" << handle << ", " << i << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-
-//    std::cerr << "vampGetOutputDescriptor: handle " << handle << " -> adapter "<< adapter << std::endl;
-
-    if (!adapter) return 0;
-    return adapter->getOutputDescriptor((Plugin *)handle, i);
-}
-
-void
-PluginAdapterBase::Impl::vampReleaseOutputDescriptor(VampOutputDescriptor *desc)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampReleaseOutputDescriptor(" << desc << ")" << std::endl;
-#endif
-
-    if (desc->identifier) free((void *)desc->identifier);
-    if (desc->name) free((void *)desc->name);
-    if (desc->description) free((void *)desc->description);
-    if (desc->unit) free((void *)desc->unit);
-    if (desc->hasFixedBinCount && desc->binNames) {
-        for (unsigned int i = 0; i < desc->binCount; ++i) {
-            if (desc->binNames[i]) {
-                free((void *)desc->binNames[i]);
-            }
-        }
-    }
-    if (desc->binNames) free((void *)desc->binNames);
-    free((void *)desc);
-}
-
-VampFeatureList *
-PluginAdapterBase::Impl::vampProcess(VampPluginHandle handle,
-                                     const float *const *inputBuffers,
-                                     int sec,
-                                     int nsec)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampProcess(" << handle << ", " << sec << ", " << nsec << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return 0;
-    return adapter->process((Plugin *)handle,
-                            inputBuffers, sec, nsec);
-}
-
-VampFeatureList *
-PluginAdapterBase::Impl::vampGetRemainingFeatures(VampPluginHandle handle)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampGetRemainingFeatures(" << handle << ")" << std::endl;
-#endif
-
-    Impl *adapter = lookupAdapter(handle);
-    if (!adapter) return 0;
-    return adapter->getRemainingFeatures((Plugin *)handle);
-}
-
-void
-PluginAdapterBase::Impl::vampReleaseFeatureSet(VampFeatureList *fs)
-{
-#ifdef DEBUG_PLUGIN_ADAPTER
-    std::cerr << "PluginAdapterBase::Impl::vampReleaseFeatureSet" << std::endl;
-#endif
-}
-
-void 
-PluginAdapterBase::Impl::cleanup(Plugin *plugin)
-{
-    if (m_fs.find(plugin) != m_fs.end()) {
-        size_t outputCount = 0;
-        if (m_pluginOutputs[plugin]) {
-            outputCount = m_pluginOutputs[plugin]->size();
-        }
-        VampFeatureList *list = m_fs[plugin];
-        for (unsigned int i = 0; i < outputCount; ++i) {
-            for (unsigned int j = 0; j < m_fsizes[plugin][i]; ++j) {
-                if (list[i].features[j].v1.label) {
-                    free(list[i].features[j].v1.label);
-                }
-                if (list[i].features[j].v1.values) {
-                    free(list[i].features[j].v1.values);
-                }
-            }
-            if (list[i].features) free(list[i].features);
-        }
-        m_fs.erase(plugin);
-        m_fsizes.erase(plugin);
-        m_fvsizes.erase(plugin);
-    }
-
-    if (m_pluginOutputs.find(plugin) != m_pluginOutputs.end()) {
-        delete m_pluginOutputs[plugin];
-        m_pluginOutputs.erase(plugin);
-    }
-
-    if (m_adapterMap) {
-        m_adapterMap->erase(plugin);
-
-        if (m_adapterMap->empty()) {
-            delete m_adapterMap;
-            m_adapterMap = 0;
-        }
-    }
-
-    delete ((Plugin *)plugin);
-}
-
-void 
-PluginAdapterBase::Impl::checkOutputMap(Plugin *plugin)
-{
-    if (m_pluginOutputs.find(plugin) == m_pluginOutputs.end() ||
-        !m_pluginOutputs[plugin]) {
-        m_pluginOutputs[plugin] = new Plugin::OutputList
-            (plugin->getOutputDescriptors());
-//        std::cerr << "PluginAdapterBase::Impl::checkOutputMap: Have " << m_pluginOutputs[plugin]->size() << " outputs for plugin " << plugin->getIdentifier() << std::endl;
-    }
-}
-
-unsigned int 
-PluginAdapterBase::Impl::getOutputCount(Plugin *plugin)
-{
-    checkOutputMap(plugin);
-    return m_pluginOutputs[plugin]->size();
-}
-
-VampOutputDescriptor *
-PluginAdapterBase::Impl::getOutputDescriptor(Plugin *plugin,
-                                       unsigned int i)
-{
-    checkOutputMap(plugin);
-    Plugin::OutputDescriptor &od =
-        (*m_pluginOutputs[plugin])[i];
-
-    VampOutputDescriptor *desc = (VampOutputDescriptor *)
-        malloc(sizeof(VampOutputDescriptor));
-
-    desc->identifier = strdup(od.identifier.c_str());
-    desc->name = strdup(od.name.c_str());
-    desc->description = strdup(od.description.c_str());
-    desc->unit = strdup(od.unit.c_str());
-    desc->hasFixedBinCount = od.hasFixedBinCount;
-    desc->binCount = od.binCount;
-
-    if (od.hasFixedBinCount && od.binCount > 0) {
-        desc->binNames = (const char **)
-            malloc(od.binCount * sizeof(const char *));
-        
-        for (unsigned int i = 0; i < od.binCount; ++i) {
-            if (i < od.binNames.size()) {
-                desc->binNames[i] = strdup(od.binNames[i].c_str());
-            } else {
-                desc->binNames[i] = 0;
-            }
-        }
-    } else {
-        desc->binNames = 0;
-    }
-
-    desc->hasKnownExtents = od.hasKnownExtents;
-    desc->minValue = od.minValue;
-    desc->maxValue = od.maxValue;
-    desc->isQuantized = od.isQuantized;
-    desc->quantizeStep = od.quantizeStep;
-
-    switch (od.sampleType) {
-    case Plugin::OutputDescriptor::OneSamplePerStep:
-        desc->sampleType = vampOneSamplePerStep; break;
-    case Plugin::OutputDescriptor::FixedSampleRate:
-        desc->sampleType = vampFixedSampleRate; break;
-    case Plugin::OutputDescriptor::VariableSampleRate:
-        desc->sampleType = vampVariableSampleRate; break;
-    }
-
-    desc->sampleRate = od.sampleRate;
-    desc->hasDuration = od.hasDuration;
-
-    return desc;
-}
-    
-VampFeatureList *
-PluginAdapterBase::Impl::process(Plugin *plugin,
-                                 const float *const *inputBuffers,
-                                 int sec, int nsec)
-{
-//    std::cerr << "PluginAdapterBase::Impl::process" << std::endl;
-    RealTime rt(sec, nsec);
-    checkOutputMap(plugin);
-    return convertFeatures(plugin, plugin->process(inputBuffers, rt));
-}
-    
-VampFeatureList *
-PluginAdapterBase::Impl::getRemainingFeatures(Plugin *plugin)
-{
-//    std::cerr << "PluginAdapterBase::Impl::getRemainingFeatures" << std::endl;
-    checkOutputMap(plugin);
-    return convertFeatures(plugin, plugin->getRemainingFeatures());
-}
-
-VampFeatureList *
-PluginAdapterBase::Impl::convertFeatures(Plugin *plugin,
-                                         const Plugin::FeatureSet &features)
-{
-    int lastN = -1;
-
-    int outputCount = 0;
-    if (m_pluginOutputs[plugin]) outputCount = m_pluginOutputs[plugin]->size();
-    
-    resizeFS(plugin, outputCount);
-    VampFeatureList *fs = m_fs[plugin];
-
-//    std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: sizeof(Feature) == " << sizeof(Plugin::Feature) << ", sizeof(VampFeature) == " << sizeof(VampFeature) << ", sizeof(VampFeatureList) == " << sizeof(VampFeatureList) << std::endl;
-
-    for (Plugin::FeatureSet::const_iterator fi = features.begin();
-         fi != features.end(); ++fi) {
-
-        int n = fi->first;
-        
-//        std::cerr << "PluginAdapterBase::Impl::convertFeatures: n = " << n << std::endl;
-
-        if (n >= int(outputCount)) {
-            std::cerr << "WARNING: PluginAdapterBase::Impl::convertFeatures: Too many outputs from plugin (" << n+1 << ", only should be " << outputCount << ")" << std::endl;
-            continue;
-        }
-
-        if (n > lastN + 1) {
-            for (int i = lastN + 1; i < n; ++i) {
-                fs[i].featureCount = 0;
-            }
-        }
-
-        const Plugin::FeatureList &fl = fi->second;
-
-        size_t sz = fl.size();
-        if (sz > m_fsizes[plugin][n]) resizeFL(plugin, n, sz);
-        fs[n].featureCount = sz;
-        
-        for (size_t j = 0; j < sz; ++j) {
-
-//            std::cerr << "PluginAdapterBase::Impl::convertFeatures: j = " << j << std::endl;
-
-            VampFeature *feature = &fs[n].features[j].v1;
-
-            feature->hasTimestamp = fl[j].hasTimestamp;
-            feature->sec = fl[j].timestamp.sec;
-            feature->nsec = fl[j].timestamp.nsec;
-            feature->valueCount = fl[j].values.size();
-
-            VampFeatureV2 *v2 = &fs[n].features[j + sz].v2;
-            
-            v2->hasDuration = fl[j].hasDuration;
-            v2->durationSec = fl[j].duration.sec;
-            v2->durationNsec = fl[j].duration.nsec;
-
-            if (feature->label) free(feature->label);
-
-            if (fl[j].label.empty()) {
-                feature->label = 0;
-            } else {
-                feature->label = strdup(fl[j].label.c_str());
-            }
-
-            if (feature->valueCount > m_fvsizes[plugin][n][j]) {
-                resizeFV(plugin, n, j, feature->valueCount);
-            }
-
-            for (unsigned int k = 0; k < feature->valueCount; ++k) {
-//                std::cerr << "PluginAdapterBase::Impl::convertFeatures: k = " << k << std::endl;
-                feature->values[k] = fl[j].values[k];
-            }
-        }
-
-        lastN = n;
-    }
-
-    if (lastN == -1) return 0;
-
-    if (int(outputCount) > lastN + 1) {
-        for (int i = lastN + 1; i < int(outputCount); ++i) {
-            fs[i].featureCount = 0;
-        }
-    }
-
-//    std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: have " << outputCount << " outputs" << std::endl;
-//    for (int i = 0; i < outputCount; ++i) {
-//        std::cerr << "PluginAdapter(v2)::convertFeatures: NOTE: output " << i << " has " << fs[i].featureCount << " features" << std::endl;
-//    }
-
-
-    return fs;
-}
-
-void
-PluginAdapterBase::Impl::resizeFS(Plugin *plugin, int n)
-{
-//    std::cerr << "PluginAdapterBase::Impl::resizeFS(" << plugin << ", " << n << ")" << std::endl;
-
-    int i = m_fsizes[plugin].size();
-    if (i >= n) return;
-
-//    std::cerr << "resizing from " << i << std::endl;
-
-    m_fs[plugin] = (VampFeatureList *)realloc
-        (m_fs[plugin], n * sizeof(VampFeatureList));
-
-    while (i < n) {
-        m_fs[plugin][i].featureCount = 0;
-        m_fs[plugin][i].features = 0;
-        m_fsizes[plugin].push_back(0);
-        m_fvsizes[plugin].push_back(std::vector<size_t>());
-        i++;
-    }
-}
-
-void
-PluginAdapterBase::Impl::resizeFL(Plugin *plugin, int n, size_t sz)
-{
-//    std::cerr << "PluginAdapterBase::Impl::resizeFL(" << plugin << ", " << n << ", "
-//              << sz << ")" << std::endl;
-
-    size_t i = m_fsizes[plugin][n];
-    if (i >= sz) return;
-
-//    std::cerr << "resizing from " << i << std::endl;
-
-    m_fs[plugin][n].features = (VampFeatureUnion *)realloc
-        (m_fs[plugin][n].features, 2 * sz * sizeof(VampFeatureUnion));
-
-    while (m_fsizes[plugin][n] < sz) {
-        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.hasTimestamp = 0;
-        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.valueCount = 0;
-        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.values = 0;
-        m_fs[plugin][n].features[m_fsizes[plugin][n]].v1.label = 0;
-        m_fs[plugin][n].features[m_fsizes[plugin][n] + sz].v2.hasDuration = 0;
-        m_fvsizes[plugin][n].push_back(0);
-        m_fsizes[plugin][n]++;
-    }
-}
-
-void
-PluginAdapterBase::Impl::resizeFV(Plugin *plugin, int n, int j, size_t sz)
-{
-//    std::cerr << "PluginAdapterBase::Impl::resizeFV(" << plugin << ", " << n << ", "
-//              << j << ", " << sz << ")" << std::endl;
-
-    size_t i = m_fvsizes[plugin][n][j];
-    if (i >= sz) return;
-
-//    std::cerr << "resizing from " << i << std::endl;
-
-    m_fs[plugin][n].features[j].v1.values = (float *)realloc
-        (m_fs[plugin][n].features[j].v1.values, sz * sizeof(float));
-
-    m_fvsizes[plugin][n][j] = sz;
-}
-  
-PluginAdapterBase::Impl::AdapterMap *
-PluginAdapterBase::Impl::m_adapterMap = 0;
-
-}
-
diff -r f8b38a017d9a -r 14029eb08472 vamp-sdk/PluginHostAdapter.cpp
--- a/vamp-sdk/PluginHostAdapter.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,447 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-#include "PluginHostAdapter.h"
-#include <cstdlib>
-
-namespace Vamp
-{
-
-PluginHostAdapter::PluginHostAdapter(const VampPluginDescriptor *descriptor,
-                                     float inputSampleRate) :
-    Plugin(inputSampleRate),
-    m_descriptor(descriptor)
-{
-//    std::cerr << "PluginHostAdapter::PluginHostAdapter (plugin = " << descriptor->name << ")" << std::endl;
-    m_handle = m_descriptor->instantiate(m_descriptor, inputSampleRate);
-    if (!m_handle) {
-//        std::cerr << "WARNING: PluginHostAdapter: Plugin instantiation failed for plugin " << m_descriptor->name << std::endl;
-    }
-}
-
-PluginHostAdapter::~PluginHostAdapter()
-{
-//    std::cerr << "PluginHostAdapter::~PluginHostAdapter (plugin = " << m_descriptor->name << ")" << std::endl;
-    if (m_handle) m_descriptor->cleanup(m_handle);
-}
-
-std::vector<std::string>
-PluginHostAdapter::getPluginPath()
-{
-    std::vector<std::string> path;
-    std::string envPath;
-
-    char *cpath = getenv("VAMP_PATH");
-    if (cpath) envPath = cpath;
-
-#ifdef _WIN32
-#define PATH_SEPARATOR ';'
-#define DEFAULT_VAMP_PATH "%ProgramFiles%\\Vamp Plugins"
-#else
-#define PATH_SEPARATOR ':'
-#ifdef __APPLE__
-#define DEFAULT_VAMP_PATH "$HOME/Library/Audio/Plug-Ins/Vamp:/Library/Audio/Plug-Ins/Vamp"
-#else
-#define DEFAULT_VAMP_PATH "$HOME/vamp:$HOME/.vamp:/usr/local/lib/vamp:/usr/lib/vamp"
-#endif
-#endif
-
-    if (envPath == "") {
-        envPath = DEFAULT_VAMP_PATH;
-        char *chome = getenv("HOME");
-        if (chome) {
-            std::string home(chome);
-            std::string::size_type f;
-            while ((f = envPath.find("$HOME")) != std::string::npos &&
-                    f < envPath.length()) {
-                envPath.replace(f, 5, home);
-            }
-        }
-#ifdef _WIN32
-        char *cpfiles = getenv("ProgramFiles");
-        if (!cpfiles) cpfiles = "C:\\Program Files";
-        std::string pfiles(cpfiles);
-        std::string::size_type f;
-        while ((f = envPath.find("%ProgramFiles%")) != std::string::npos &&
-               f < envPath.length()) {
-            envPath.replace(f, 14, pfiles);
-        }
-#endif
-    }
-
-    std::string::size_type index = 0, newindex = 0;
-
-    while ((newindex = envPath.find(PATH_SEPARATOR, index)) < envPath.size()) {
-	path.push_back(envPath.substr(index, newindex - index));
-	index = newindex + 1;
-    }
-    
-    path.push_back(envPath.substr(index));
-
-    return path;
-}
-
-bool
-PluginHostAdapter::initialise(size_t channels,
-                              size_t stepSize,
-                              size_t blockSize)
-{
-    if (!m_handle) return false;
-    return m_descriptor->initialise(m_handle, channels, stepSize, blockSize) ?
-        true : false;
-}
-
-void
-PluginHostAdapter::reset()
-{
-    if (!m_handle) {
-//        std::cerr << "PluginHostAdapter::reset: no handle" << std::endl;
-        return;
-    }
-//    std::cerr << "PluginHostAdapter::reset(" << m_handle << ")" << std::endl;
-    m_descriptor->reset(m_handle);
-}
-
-PluginHostAdapter::InputDomain
-PluginHostAdapter::getInputDomain() const
-{
-    if (m_descriptor->inputDomain == vampFrequencyDomain) {
-        return FrequencyDomain;
-    } else {
-        return TimeDomain;
-    }
-}
-
-unsigned int
-PluginHostAdapter::getVampApiVersion() const
-{
-    return m_descriptor->vampApiVersion;
-}
-
-std::string
-PluginHostAdapter::getIdentifier() const
-{
-    return m_descriptor->identifier;
-}
-
-std::string
-PluginHostAdapter::getName() const
-{
-    return m_descriptor->name;
-}
-
-std::string
-PluginHostAdapter::getDescription() const
-{
-    return m_descriptor->description;
-}
-
-std::string
-PluginHostAdapter::getMaker() const
-{
-    return m_descriptor->maker;
-}
-
-int
-PluginHostAdapter::getPluginVersion() const
-{
-    return m_descriptor->pluginVersion;
-}
-
-std::string
-PluginHostAdapter::getCopyright() const
-{
-    return m_descriptor->copyright;
-}
-
-PluginHostAdapter::ParameterList
-PluginHostAdapter::getParameterDescriptors() const
-{
-    ParameterList list;
-    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
-        const VampParameterDescriptor *spd = m_descriptor->parameters[i];
-        ParameterDescriptor pd;
-        pd.identifier = spd->identifier;
-        pd.name = spd->name;
-        pd.description = spd->description;
-        pd.unit = spd->unit;
-        pd.minValue = spd->minValue;
-        pd.maxValue = spd->maxValue;
-        pd.defaultValue = spd->defaultValue;
-        pd.isQuantized = spd->isQuantized;
-        pd.quantizeStep = spd->quantizeStep;
-        if (pd.isQuantized && spd->valueNames) {
-            for (unsigned int j = 0; spd->valueNames[j]; ++j) {
-                pd.valueNames.push_back(spd->valueNames[j]);
-            }
-        }
-        list.push_back(pd);
-    }
-    return list;
-}
-
-float
-PluginHostAdapter::getParameter(std::string param) const
-{
-    if (!m_handle) return 0.0;
-
-    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
-        if (param == m_descriptor->parameters[i]->identifier) {
-            return m_descriptor->getParameter(m_handle, i);
-        }
-    }
-
-    return 0.0;
-}
-
-void
-PluginHostAdapter::setParameter(std::string param, 
-                                float value)
-{
-    if (!m_handle) return;
-
-    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
-        if (param == m_descriptor->parameters[i]->identifier) {
-            m_descriptor->setParameter(m_handle, i, value);
-            return;
-        }
-    }
-}
-
-PluginHostAdapter::ProgramList
-PluginHostAdapter::getPrograms() const
-{
-    ProgramList list;
-    
-    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
-        list.push_back(m_descriptor->programs[i]);
-    }
-    
-    return list;
-}
-
-std::string
-PluginHostAdapter::getCurrentProgram() const
-{
-    if (!m_handle) return "";
-
-    int pn = m_descriptor->getCurrentProgram(m_handle);
-    return m_descriptor->programs[pn];
-}
-
-void
-PluginHostAdapter::selectProgram(std::string program)
-{
-    if (!m_handle) return;
-
-    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
-        if (program == m_descriptor->programs[i]) {
-            m_descriptor->selectProgram(m_handle, i);
-            return;
-        }
-    }
-}
-
-size_t
-PluginHostAdapter::getPreferredStepSize() const
-{
-    if (!m_handle) return 0;
-    return m_descriptor->getPreferredStepSize(m_handle);
-}
-
-size_t
-PluginHostAdapter::getPreferredBlockSize() const
-{
-    if (!m_handle) return 0;
-    return m_descriptor->getPreferredBlockSize(m_handle);
-}
-
-size_t
-PluginHostAdapter::getMinChannelCount() const
-{
-    if (!m_handle) return 0;
-    return m_descriptor->getMinChannelCount(m_handle);
-}
-
-size_t
-PluginHostAdapter::getMaxChannelCount() const
-{
-    if (!m_handle) return 0;
-    return m_descriptor->getMaxChannelCount(m_handle);
-}
-
-PluginHostAdapter::OutputList
-PluginHostAdapter::getOutputDescriptors() const
-{
-    OutputList list;
-    if (!m_handle) {
-//        std::cerr << "PluginHostAdapter::getOutputDescriptors: no handle " << std::endl;
-        return list;
-    }
-
-    unsigned int count = m_descriptor->getOutputCount(m_handle);
-
-    for (unsigned int i = 0; i < count; ++i) {
-        VampOutputDescriptor *sd = m_descriptor->getOutputDescriptor(m_handle, i);
-        OutputDescriptor d;
-        d.identifier = sd->identifier;
-        d.name = sd->name;
-        d.description = sd->description;
-        d.unit = sd->unit;
-        d.hasFixedBinCount = sd->hasFixedBinCount;
-        d.binCount = sd->binCount;
-        if (d.hasFixedBinCount) {
-            for (unsigned int j = 0; j < sd->binCount; ++j) {
-                d.binNames.push_back(sd->binNames[j] ? sd->binNames[j] : "");
-            }
-        }
-        d.hasKnownExtents = sd->hasKnownExtents;
-        d.minValue = sd->minValue;
-        d.maxValue = sd->maxValue;
-        d.isQuantized = sd->isQuantized;
-        d.quantizeStep = sd->quantizeStep;
-
-        switch (sd->sampleType) {
-        case vampOneSamplePerStep:
-            d.sampleType = OutputDescriptor::OneSamplePerStep; break;
-        case vampFixedSampleRate:
-            d.sampleType = OutputDescriptor::FixedSampleRate; break;
-        case vampVariableSampleRate:
-            d.sampleType = OutputDescriptor::VariableSampleRate; break;
-        }
-
-        d.sampleRate = sd->sampleRate;
-
-        if (m_descriptor->vampApiVersion >= 2) {
-            d.hasDuration = sd->hasDuration;
-        } else {
-            d.hasDuration = false;
-        }
-
-        list.push_back(d);
-
-        m_descriptor->releaseOutputDescriptor(sd);
-    }
-
-    return list;
-}
-
-PluginHostAdapter::FeatureSet
-PluginHostAdapter::process(const float *const *inputBuffers,
-                           RealTime timestamp)
-{
-    FeatureSet fs;
-    if (!m_handle) return fs;
-
-    int sec = timestamp.sec;
-    int nsec = timestamp.nsec;
-    
-    VampFeatureList *features = m_descriptor->process(m_handle,
-                                                      inputBuffers,
-                                                      sec, nsec);
-    
-    convertFeatures(features, fs);
-    m_descriptor->releaseFeatureSet(features);
-    return fs;
-}
-
-PluginHostAdapter::FeatureSet
-PluginHostAdapter::getRemainingFeatures()
-{
-    FeatureSet fs;
-    if (!m_handle) return fs;
-    
-    VampFeatureList *features = m_descriptor->getRemainingFeatures(m_handle); 
-
-    convertFeatures(features, fs);
-    m_descriptor->releaseFeatureSet(features);
-    return fs;
-}
-
-void
-PluginHostAdapter::convertFeatures(VampFeatureList *features,
-                                   FeatureSet &fs)
-{
-    if (!features) return;
-
-    unsigned int outputs = m_descriptor->getOutputCount(m_handle);
-
-    for (unsigned int i = 0; i < outputs; ++i) {
-        
-        VampFeatureList &list = features[i];
-
-        if (list.featureCount > 0) {
-
-            Feature feature;
-            feature.values.reserve(list.features[0].v1.valueCount);
-
-            for (unsigned int j = 0; j < list.featureCount; ++j) {
-
-                feature.hasTimestamp = list.features[j].v1.hasTimestamp;
-                feature.timestamp = RealTime(list.features[j].v1.sec,
-                                             list.features[j].v1.nsec);
-                feature.hasDuration = false;
-
-                if (m_descriptor->vampApiVersion >= 2) {
-                    unsigned int j2 = j + list.featureCount;
-                    feature.hasDuration = list.features[j2].v2.hasDuration;
-                    feature.duration = RealTime(list.features[j2].v2.durationSec,
-                                                list.features[j2].v2.durationNsec);
-                }
-
-                for (unsigned int k = 0; k < list.features[j].v1.valueCount; ++k) {
-                    feature.values.push_back(list.features[j].v1.values[k]);
-                }
-
-                if (list.features[j].v1.label) {
-                    feature.label = list.features[j].v1.label;
-                }
-
-                fs[i].push_back(feature);
-
-                if (list.features[j].v1.valueCount > 0) {
-                    feature.values.clear();
-                }
-
-                if (list.features[j].v1.label) {
-                    feature.label = "";
-                }
-            }
-        }
-    }
-}
-
-}
diff -r f8b38a017d9a -r 14029eb08472 vamp-sdk/RealTime.cpp
--- a/vamp-sdk/RealTime.cpp	Thu Nov 06 13:51:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,245 +0,0 @@
-/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
-
-/*
-    Vamp
-
-    An API for audio analysis and feature extraction plugins.
-
-    Centre for Digital Music, Queen Mary, University of London.
-    Copyright 2006 Chris Cannam.
-  
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation
-    files (the "Software"), to deal in the Software without
-    restriction, including without limitation the rights to use, copy,
-    modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
-    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-    Except as contained in this notice, the names of the Centre for
-    Digital Music; Queen Mary, University of London; and Chris Cannam
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in this Software without prior written
-    authorization.
-*/
-
-/*
-   This is a modified version of a source file from the 
-   Rosegarden MIDI and audio sequencer and notation editor.
-   This file copyright 2000-2006 Chris Cannam.
-   Relicensed by the author as detailed above.
-*/
-
-#include <iostream>
-
-#if (__GNUC__ < 3)
-#include <strstream>
-#define stringstream strstream
-#else
-#include <sstream>
-#endif
-
-using std::cerr;
-using std::endl;
-
-#include "RealTime.h"
-
-#ifndef _WIN32
-#include <sys/time.h>
-#endif
-
-namespace Vamp {
-
-// A RealTime consists of two ints that must be at least 32 bits each.
-// A signed 32-bit int can store values exceeding +/- 2 billion.  This
-// means we can safely use our lower int for nanoseconds, as there are
-// 1 billion nanoseconds in a second and we need to handle double that
-// because of the implementations of addition etc that we use.
-//
-// The maximum valid RealTime on a 32-bit system is somewhere around
-// 68 years: 999999999 nanoseconds longer than the classic Unix epoch.
-
-#define ONE_BILLION 1000000000
-
-RealTime::RealTime(int s, int n) :
-    sec(s), nsec(n)
-{
-    if (sec == 0) {
-	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
-	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
-    } else if (sec < 0) {
-	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
-	while (nsec > 0)             { nsec -= ONE_BILLION; ++sec; }
-    } else { 
-	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
-	while (nsec < 0)             { nsec += ONE_BILLION; --sec; }
-    }
-}
-
-RealTime
-RealTime::fromSeconds(double sec)
-{
-    return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5));
-}
-
-RealTime
-RealTime::fromMilliseconds(int msec)
-{
-    return RealTime(msec / 1000, (msec % 1000) * 1000000);
-}
-
-#ifndef _WIN32
-RealTime
-RealTime::fromTimeval(const struct timeval &tv)
-{
-    return RealTime(tv.tv_sec, tv.tv_usec * 1000);
-}
-#endif
-
-std::ostream &operator<<(std::ostream &out, const RealTime &rt)
-{
-    if (rt < RealTime::zeroTime) {
-	out << "-";
-    } else {
-	out << " ";
-    }
-
-    int s = (rt.sec < 0 ? -rt.sec : rt.sec);
-    int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec);
-
-    out << s << ".";
-
-    int nn(n);
-    if (nn == 0) out << "00000000";
-    else while (nn < (ONE_BILLION / 10)) {
-	out << "0";
-	nn *= 10;
-    }
-    
-    out << n << "R";
-    return out;
-}
-
-std::string
-RealTime::toString() const
-{
-    std::stringstream out;
-    out << *this;
-    
-#if (__GNUC__ < 3)
-    out << std::ends;
-#endif
-
-    std::string s = out.str();
-
-    // remove trailing R
-    return s.substr(0, s.length() - 1);
-}
-
-std::string
-RealTime::toText(bool fixedDp) const
-{
-    if (*this < RealTime::zeroTime) return "-" + (-*this).toText();
-
-    std::stringstream out;
-
-    if (sec >= 3600) {
-	out << (sec / 3600) << ":";
-    }
-
-    if (sec >= 60) {
-	out << (sec % 3600) / 60 << ":";
-    }
-
-    if (sec >= 10) {
-	out << ((sec % 60) / 10);
-    }
-
-    out << (sec % 10);
-    
-    int ms = msec();
-
-    if (ms != 0) {
-	out << ".";
-	out << (ms / 100);
-	ms = ms % 100;
-	if (ms != 0) {
-	    out << (ms / 10);
-	    ms = ms % 10;
-	} else if (fixedDp) {
-	    out << "0";
-	}
-	if (ms != 0) {
-	    out << ms;
-	} else if (fixedDp) {
-	    out << "0";
-	}
-    } else if (fixedDp) {
-	out << ".000";
-    }
-	
-#if (__GNUC__ < 3)
-    out << std::ends;
-#endif
-
-    std::string s = out.str();
-
-    return s;
-}
-
-
-RealTime
-RealTime::operator/(int d) const
-{
-    int secdiv = sec / d;
-    int secrem = sec % d;
-
-    double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d;
-    
-    return RealTime(secdiv, int(nsecdiv + 0.5));
-}
-
-double 
-RealTime::operator/(const RealTime &r) const
-{
-    double lTotal = double(sec) * ONE_BILLION + double(nsec);
-    double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec);
-    
-    if (rTotal == 0) return 0.0;
-    else return lTotal/rTotal;
-}
-
-long
-RealTime::realTime2Frame(const RealTime &time, unsigned int sampleRate)
-{
-    if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
-    double s = time.sec + double(time.nsec + 1) / 1000000000.0;
-    return long(s * sampleRate);
-}
-
-RealTime
-RealTime::frame2RealTime(long frame, unsigned int sampleRate)
-{
-    if (frame < 0) return -frame2RealTime(-frame, sampleRate);
-
-    RealTime rt;
-    rt.sec = frame / long(sampleRate);
-    frame -= rt.sec * long(sampleRate);
-    rt.nsec = (int)(((double(frame) * 1000000.0) / sampleRate) * 1000.0);
-    return rt;
-}
-
-const RealTime RealTime::zeroTime(0,0);
-
-}