/home/maxime/Projets/Mixxx/1.10/mixxx/src/tonal/TonalAnalysis.cxx

Go to the documentation of this file.

/*
 * Copyright (c) 2001-2002 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "TonalAnalysis.hxx"
#include "ChordExtractor.hxx"
#include "ProcessingFactory.hxx"


namespace CLAM
{

namespace Hidden
{
        static const char * metadata[] = {
                "key", "TonalAnalysis",
                "category", "Analysis",
                "description", "TonalAnalysis",
                0
        };
        static FactoryRegistrator<ProcessingFactory, TonalAnalysis> reg = metadata;
}
        

// TonalAnalysisConfig method definition
void TonalAnalysisConfig::DefaultInit(void)
{
        AddAll();

        UpdateData();

        SetFilterInertia(0.7);
        SetTunningEnabled(true);
        SetPeakWindowingEnabled(true);
        SetHopRatio(8.0);
        SetSegmentationMethod(1);
}


TonalAnalysis::TonalAnalysis( const TonalAnalysisConfig& cfg )
        : _input("Audio Input",this)
        , _pcp("Pitch Profile",this)
        , _chordCorrelation("Chord Correlation",this)
        , _segmentation("Chord Segmentation", this)
        , _chromaPeaks("Chroma Peaks",this)
        , _tunning("Tunning",this)
        , _implementation( 0 )
        , _currentTime( 0 )
{
        Configure( cfg );
}

TonalAnalysis::~TonalAnalysis()
{
        if (_implementation) delete _implementation;
}

bool TonalAnalysis::ConcreteConfigure( const ProcessingConfig& c )
{
        CopyAsConcreteConfig(_config, c);

        if (_implementation) delete _implementation;
        _implementation = new Simac::ChordExtractor;

        _implementation->filterInertia( _config.GetFilterInertia() );
        _implementation->enableTunning( _config.GetTunningEnabled() );
        _implementation->enablePeakWindowing( _config.GetPeakWindowingEnabled() );
        _implementation->hopRatio( _config.GetHopRatio() );
        unsigned segmentationMethod = _config.HasSegmentationMethod() ? _config.GetSegmentationMethod() : 0;
        _implementation->segmentationMethod( segmentationMethod );

        _input.SetSize( _implementation->frameSize() );
        _input.SetHop( _implementation->hop() );
        _floatBuffer.resize(_implementation->frameSize());
        return true;
}

bool TonalAnalysis::ConcreteStart()
{
        _currentTime = 0.0;
        return true;
}

bool TonalAnalysis::ConcreteStop()
{
        _implementation->clear();
        return true;
}

bool TonalAnalysis::Do()
{
        if( !AbleToExecute() ) return true;
        CLAM::TData * input = &(_input.GetAudio().GetBuffer()[0]);
        for (unsigned i = 0; i < _implementation->frameSize(); i++)
                _floatBuffer[i] = input[i];
        _implementation->doIt(&_floatBuffer[0], _currentTime);

        std::vector<TData> & pcp = _pcp.GetData();
        pcp.resize(_implementation->pcp().size());
        for (unsigned i = 0; i < _implementation->pcp().size(); i++)
                pcp[i] = _implementation->pcp()[i];
        _pcp.Produce();

        std::vector<TData> & chordCorrelation = _chordCorrelation.GetData();
        chordCorrelation.resize(_implementation->chordCorrelation().size());
        for (unsigned i = 0; i < _implementation->chordCorrelation().size(); i++)
                chordCorrelation[i] = _implementation->chordCorrelation()[i];
        _chordCorrelation.Produce();

        DiscontinuousSegmentation & segmentation = _segmentation.GetData();
        segmentation = _implementation->segmentation();
        for (unsigned i=0; i<segmentation.onsets().size(); i++)
        {
                unsigned chordIndex = _implementation->chordIndexes()[i];
                std::string chordName = _implementation->root(chordIndex) + " " + _implementation->mode(chordIndex);
                segmentation.setLabel(i,chordName);
        }
        segmentation.dragOffset(segmentation.onsets().size()-1, _currentTime );

        _segmentation.Produce();
        
        
        std::vector<std::pair<TData,TData> > & chromaPeaks = _chromaPeaks.GetData();
        chromaPeaks.resize(_implementation->peaks().size()); //TODO processing time resize!!!!
        for (unsigned i = 0; i < _implementation->peaks().size(); i++)
                chromaPeaks[i] = _implementation->peaks()[i];
        _chromaPeaks.Produce();

        std::pair<TData,TData> & tunning = _tunning.GetData();
        tunning = _implementation->instantTunning();
//      tunning.first=_implementation->tunning();
//      tunning.second=_implementation->tunningStrength();
        _tunning.Produce();

        _input.Consume();

        _currentTime += _implementation->hop()/44100.0;
        
        return true;
}



} // namespace CLAM