SpectralSynthesisConfig.cxx

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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 "CLAM_Math.hxx"
#include "SpectralSynthesisConfig.hxx"

namespace CLAM
{

void SpectralSynthesisConfig::DefaultInit()
{
        AddAll();
        UpdateData();
        DefaultValues();        
}

void SpectralSynthesisConfig::DefaultValues()
{
        SetprZeroPadding(0);
        SetSamplingRate(44100);

        SetAnalWindowSize(1025);
        SetAnalWindowType(EWindowType::eBlackmanHarris92);
        GetAnalWindowGenerator().SetInvert(true);

        SetHopSize((GetAnalWindowSize()-1)/2);

        GetSynthWindowGenerator().SetType(EWindowType::eTriangular);
        GetSynthWindowGenerator().SetNormalize(EWindowNormalize::eNone);
        GetSynthWindowGenerator().SetSize(GetHopSize()*2+1);

        SetResidual(false);
        

}

void SpectralSynthesisConfig::Sync()
{
  int aws = GetprAnalWindowSize();
  int hs = GetprHopSize();
  
  SetSamplingRate(GetprSamplingRate());

  SetAnalWindowSize(aws);
  SetAnalWindowType(GetprAnalWindowType());

  SetHopSize(hs);

  GetSynthWindowGenerator().SetSize(GetHopSize()*2+1);
}


void SpectralSynthesisConfig::SetAnalWindowSize(TSize w)
{
        CLAM_ASSERT(w%2==1,"Window size must be odd");
        SetprAnalWindowSize(w);
        GetAnalWindowGenerator().SetSize(w);
        TData audioSize=TData(PowerOfTwo((w-1)*int(pow(TData(2.0),TData(GetZeroPadding())))));
        GetIFFT().SetAudioSize(int(audioSize));
        GetCircularShift().SetAmount(TData(w/2)); 
}

TSize SpectralSynthesisConfig::GetAnalWindowSize() const
{
        return GetAnalWindowGenerator().GetSize();
}

void SpectralSynthesisConfig::SetAnalWindowType(const EWindowType& t)
{
        GetAnalWindowGenerator().SetType(t);
        SetprAnalWindowType(t);
}

const EWindowType& SpectralSynthesisConfig::GetAnalWindowType() const
{
        return GetAnalWindowGenerator().GetType();
}


void SpectralSynthesisConfig::SetSynthWindowSize(TSize w)
{
        CLAM_ASSERT(w%2==1,"Window size must be odd");
        GetSynthWindowGenerator().SetSize(w);
}

TSize SpectralSynthesisConfig::GetSynthWindowSize() const
{
        return GetSynthWindowGenerator().GetSize();
}

void SpectralSynthesisConfig::SetZeroPadding(int z)
{
        SetprZeroPadding(z);
        TData audioSize=TData(PowerOfTwo((GetAnalWindowSize()-1)*int(pow(TData(2),TData(GetZeroPadding())))));
        GetIFFT().SetAudioSize(int(audioSize));
}

int SpectralSynthesisConfig::GetZeroPadding() const
{
        return GetprZeroPadding();
}

void SpectralSynthesisConfig::SetHopSize(TSize h)
{
        GetSynthWindowGenerator().SetSize(2*h+1);
        SetprHopSize(h);
}

TSize SpectralSynthesisConfig::GetHopSize() const
{
        return (GetSynthWindowGenerator().GetSize()-1)>>1;
}

void SpectralSynthesisConfig::SetSamplingRate(TData sr)
{
        SetprSamplingRate(int(sr));

        SetAnalWindowSize(GetAnalWindowSize());
}

TData SpectralSynthesisConfig::GetSamplingRate() const
{
        return TData(GetprSamplingRate());
}


TInt32 SpectralSynthesisConfig::PowerOfTwo(TInt32 size)
{
        int tmp = size;
        int outputSize = 1;
        while (tmp) 
        {
                outputSize=outputSize << 1;
                tmp=tmp >> 1;
        }
        if(outputSize == size << 1)
                outputSize = outputSize >> 1;
        return outputSize;
}
        
} // namespace CLAM