/home/marsyas/marsyas/src/marsyas/Deinterleave.cpp

/*
** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca>
**  
** 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 "Deinterleave.h"

using std::ostringstream;
using namespace Marsyas;

Deinterleave::Deinterleave(mrs_string name):MarSystem("Deinterleave", name)
{
    
    pat_ = new PatchMatrix("pat");
    
    outindex_.stretch(inObservations_);
    inindex_.stretch(inObservations_);
    weights_.stretch(inObservations_,inObservations_);
    
    addControls();
}

Deinterleave::Deinterleave(const Deinterleave& a) : MarSystem(a)
{
    // For any MarControlPtr in a MarSystem 
    // it is necessary to perform this getctrl 
    // in the copy constructor in order for cloning to work 
    ctrl_numSets_ = getctrl("mrs_natural/numSets");

    pat_ = new PatchMatrix("pat");
    
    outindex_.stretch(inObservations_);
    inindex_.stretch(inObservations_);
    weights_.stretch(inObservations_,inObservations_);
}

Deinterleave::~Deinterleave()
{
    delete pat_;
}

MarSystem* 
Deinterleave::clone() const 
{
    return new Deinterleave(*this);
}

void 
Deinterleave::addControls()
{
    //Add specific controls needed by this MarSystem.
    addctrl("mrs_natural/numSets", 2, ctrl_numSets_);
    //setControlState("mrs_realvec/consts",true);
    setControlState("mrs_natural/numSets",true);
}

void
Deinterleave::myUpdate(MarControlPtr sender)
{
    
    MarSystem::myUpdate(sender);
    
    mrs_natural numSets = ctrl_numSets_->to<mrs_natural>();
    
    outindex_.stretch(inObservations_);
    inindex_.stretch(inObservations_);
    weights_.stretch(inObservations_,inObservations_);
    
    
    mrs_natural rest=inObservations_%numSets;
    mrs_natural part=inObservations_/numSets;
    mrs_natural count=0;

    for (mrs_natural t = 0; t < rest; t++)
    {
        for (mrs_natural n = 0; n <1+part ; n++)
        {
            //get Reordering indices for all rows for which there is a rest (they get one output more)
            outindex_(count)=n+part*t;
            inindex_(count)=numSets*n+t;
            count++;
        }
    }
    for (mrs_natural t = rest; t < numSets; t++)
    {
        for (mrs_natural n = 0; n < part; n++)
        {
            //get Reordering indices for all remaining rows
            outindex_(count)=n+rest+part*t;
            inindex_(count)=numSets*n+t;
            count++;
        }
    }
    
    //Weights deinterleave n
    for(mrs_natural i=0;i<inindex_.getSize();++i)
    {
        weights_((mrs_natural)(outindex_(i)),(mrs_natural)(inindex_(i)))=1.0;
    }

    pat_->setctrl("mrs_realvec/weights",weights_);
    
    
}


void 
Deinterleave::myProcess(realvec& in, realvec& out)
{
    //Weights deinterleave n
    
    pat_->process(in,out);
            
}







    

---