diff options
author | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
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committer | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
commit | 9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (patch) | |
tree | 96ec400b83b8c1c06852b1936f684b5fbcd47a79 /libs/vamp-plugins/PercussionOnsetDetector.cpp | |
parent | 2f3f697bb8e185eb43c2c50b4eefc2bcb937f269 (diff) |
remove empty sigc++2 directory
git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/vamp-plugins/PercussionOnsetDetector.cpp')
-rw-r--r-- | libs/vamp-plugins/PercussionOnsetDetector.cpp | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/libs/vamp-plugins/PercussionOnsetDetector.cpp b/libs/vamp-plugins/PercussionOnsetDetector.cpp deleted file mode 100644 index 447eb19a28..0000000000 --- a/libs/vamp-plugins/PercussionOnsetDetector.cpp +++ /dev/null @@ -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, lrintf(m_inputSampleRate)); - returnFeatures[0].push_back(onset); - } - - m_dfMinus2 = m_dfMinus1; - m_dfMinus1 = count; - - return returnFeatures; -} - -PercussionOnsetDetector::FeatureSet -PercussionOnsetDetector::getRemainingFeatures() -{ - return FeatureSet(); -} - |