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Diffstat (limited to 'libs/vamp-plugins/EBUr128.cpp')
-rw-r--r-- | libs/vamp-plugins/EBUr128.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/libs/vamp-plugins/EBUr128.cpp b/libs/vamp-plugins/EBUr128.cpp new file mode 100644 index 0000000000..1a3b9a401c --- /dev/null +++ b/libs/vamp-plugins/EBUr128.cpp @@ -0,0 +1,170 @@ +/* -*- 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. + +*/ + +#include "EBUr128.h" + +using std::string; +using std::vector; +using std::cerr; +using std::endl; + + +VampEBUr128::VampEBUr128(float inputSampleRate) + : Plugin(inputSampleRate) + , m_stepSize(0) +{ +} + +VampEBUr128::~VampEBUr128() +{ +} + +string +VampEBUr128::getIdentifier() const +{ + return "ebur128"; +} + +string +VampEBUr128::getName() const +{ + return "EBU R128 Loudness"; +} + +string +VampEBUr128::getDescription() const +{ + return "Loudness measurements according to the EBU Recommendation 128"; +} + +string +VampEBUr128::getMaker() const +{ + return "Harrison Consoles"; +} + +int +VampEBUr128::getPluginVersion() const +{ + return 2; +} + +string +VampEBUr128::getCopyright() const +{ + return "GPL version 2 or later"; +} + +bool +VampEBUr128::initialise(size_t channels, size_t stepSize, size_t blockSize) +{ + if (channels < getMinChannelCount() || + channels > getMaxChannelCount()) return false; + + m_stepSize = std::min(stepSize, blockSize); + m_channels = channels; + + ebu.init (m_channels, m_inputSampleRate); + + return true; +} + +void +VampEBUr128::reset() +{ + ebu.reset (); +} + +VampEBUr128::OutputList +VampEBUr128::getOutputDescriptors() const +{ + OutputList list; + + OutputDescriptor zc; + zc.identifier = "loundless"; + zc.name = "Integrated loudness"; + zc.description = "Integrated loudness"; + zc.unit = "LUFS"; + zc.hasFixedBinCount = true; + zc.binCount = 0; + zc.hasKnownExtents = false; + zc.isQuantized = false; + zc.sampleType = OutputDescriptor::OneSamplePerStep; + list.push_back(zc); + + zc.identifier = "range"; + zc.name = "Integrated loudness Range"; + zc.description = "Dynamic Range of the audio"; + zc.unit = "LU"; + zc.hasFixedBinCount = true; + zc.binCount = 0; + zc.hasKnownExtents = false; + zc.isQuantized = false; + zc.sampleType = OutputDescriptor::OneSamplePerStep; + list.push_back(zc); + + return list; +} + +VampEBUr128::FeatureSet +VampEBUr128::process(const float *const *inputBuffers, + Vamp::RealTime timestamp) +{ + if (m_stepSize == 0) { + cerr << "ERROR: VampEBUr128::process: " + << "VampEBUr128 has not been initialised" + << endl; + return FeatureSet(); + } + + ebu.integr_start (); // noop if already started + ebu.process (m_stepSize, inputBuffers); + + return FeatureSet(); +} + +VampEBUr128::FeatureSet +VampEBUr128::getRemainingFeatures() +{ + FeatureSet returnFeatures; + + Feature loudness; + loudness.hasTimestamp = false; + loudness.values.push_back(ebu.integrated()); + returnFeatures[0].push_back(loudness); + + Feature range; + range.hasTimestamp = false; + range.values.push_back(ebu.range_max () - ebu.range_min ()); + returnFeatures[1].push_back(range); + + return returnFeatures; +} |