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/*
* Copyright (c) 2004 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 "TickExtractor.hxx"
#include "TickExtractorConfig.hxx"
#include <CLAM/Err.hxx>
#include "Pulse.hxx"
#include <CLAM/Audio.hxx>
#include <CLAM/XMLStorage.hxx>
#include <CLAM/MonoAudioFileReader.hxx>
#include <CLAM/MonoAudioFileReaderConfig.hxx>
#include "OnsetDetector.hxx"
#include "TickSequenceTracker.hxx"
#include "IOIHistogram.hxx"
#include "Normalization.hxx"
namespace CLAM
{
static void LoadAudioFile( CLAM::Audio & audio, const std::string & audioFileName )
{
CLAM::MonoAudioFileReaderConfig cfg;
cfg.SetSourceFile( audioFileName );
CLAM::MonoAudioFileReader reader( cfg );
if ( ! reader.IsConfigured() )
{
std::string errStr = "Error: file " + audioFileName + " cannot be opened ";
errStr += "or is encoded in an unrecognized format\n";
errStr += reader.GetConfigErrorMessage();
throw Err( errStr.c_str() );
}
CLAM::TSize fileSize = int((reader.GetHeader().GetLength()/1000.)*reader.GetHeader().GetSampleRate());
audio.SetSize(fileSize);
audio.SetSampleRate(reader.GetHeader().GetSampleRate());
//Read Audio File
reader.Start();
reader.Do(audio);
reader.Stop();
}
void ExtractTicksSequence( std::string pathToFile,
CLAM::Pulse& ticksList,
CLAM::Pulse& beatsList )
{
TickExtractorConfig defaultConfig;
ExtractTicksSequence( pathToFile, defaultConfig, ticksList, beatsList );
}
static void OnsetDetection( const TickExtractorConfig& configuration,
Audio& audioFromFile,
Array<TimeIndex>& transients )
{
Segment seg;
seg.AddAudio();
seg.UpdateData();
seg.SetHoldsData(true);
seg.GetAudio().SetSize( audioFromFile.GetSize() );
seg.GetAudio().SetSampleRate( audioFromFile.GetSampleRate() );
TTime duration = audioFromFile.GetSize()/audioFromFile.GetSampleRate();
TData sampleRate = audioFromFile.GetSampleRate();
// Audio normalization pass
Normalization audioNormalizer;
NormalizationConfig audioNormCfg;
audioNormCfg.SetType( 3 ); // Scaling factor computed from "dominant energy"
audioNormalizer.Configure( audioNormCfg );
audioNormalizer.Start();
audioNormalizer.Do( audioFromFile, seg.GetAudio() );
audioNormalizer.Stop();
seg.SetEndTime(duration);
OnsetDetectorConfig onsetconfig;
OnsetDetector onset;
onsetconfig.SetComputeOffsets(false);
onsetconfig.SetGlobalThreshold(25);
onset.Configure(onsetconfig);
onset.Start();
onset.Do(seg, transients);
if ( transients.Size() > 0 )
{
TimeIndex nullTransient;
nullTransient.SetPosition( 0.0 );
nullTransient.SetWeight( 0.0 );
transients.InsertElem( 0, nullTransient );
for ( int k = 0; k < transients.Size(); k++ )
{
transients[k].SetPosition( transients[k].GetPosition()*sampleRate );
transients[k].SetWeight( transients[k].GetWeight() );
}
}
}
void ExtractTicksSequence( std::string pathToFile,
const TickExtractorConfig& configuration,
CLAM::Pulse& tickSequence,
CLAM::Pulse& beatSequence )
{
//configuration.SetFromAudio( false );
Audio audioFromFile;
try
{
LoadAudioFile( audioFromFile, pathToFile );
}
catch( Err& e )
{
Err propErr("Error opening file: \n" );
propErr.Embed(e);
throw propErr;
}
Array< TimeIndex > transients;
TData sampleRate = audioFromFile.GetSampleRate();
OnsetDetection( configuration, audioFromFile, transients );
// Ticks ( and beats ) computation
RhythmDescription::TickSequenceTracker myTickSequenceTracker;
RhythmDescription::TickSequenceTrackerConfig myTickSequenceTrackerConfig;
myTickSequenceTrackerConfig.SetComputeBeats(configuration.GetComputeBeats());
myTickSequenceTrackerConfig.SetThreshold_IOIHistPeaks(configuration.GetThreshold_IOIHistPeaks());
myTickSequenceTrackerConfig.SetTempoLimInf(configuration.GetTempoLimInf());
myTickSequenceTrackerConfig.SetTempoLimSup(configuration.GetTempoLimSup());
myTickSequenceTrackerConfig.SetTickLimInf(configuration.GetTickLimInf());
myTickSequenceTrackerConfig.SetTickLimSup(configuration.GetTickLimSup());
myTickSequenceTrackerConfig.SetDeviationPenalty(configuration.GetDeviationPenalty());
myTickSequenceTrackerConfig.SetOverSubdivisionPenalty(configuration.GetOverSubdivisionPenalty());
myTickSequenceTrackerConfig.SetGaussianWindowSize(configuration.GetGaussianWindowSize());
myTickSequenceTrackerConfig.SetScope(configuration.GetScope());
myTickSequenceTrackerConfig.SetAdjustWithOnsets(configuration.GetAdjustWithOnsets());
myTickSequenceTrackerConfig.SetNTrans(configuration.GetNTrans());
myTickSequenceTrackerConfig.SetTransHop(configuration.GetTransHop());
myTickSequenceTrackerConfig.SetSampleRate(sampleRate);
myTickSequenceTracker.Configure(myTickSequenceTrackerConfig);
RhythmDescription::IOIHistogram ioiHistogram;
myTickSequenceTracker.Start();
//Use the transients computed in this main
myTickSequenceTracker.Do( transients, tickSequence, beatSequence, ioiHistogram );
myTickSequenceTracker.Stop();
}
}
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