/home/marsyas/marsyas/src/marsyas/Cascade.cpp

/*
** Copyright (C) 1998-2010 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 "Cascade.h"

 
using std::ostringstream;
using std::vector;

using namespace Marsyas;

Cascade::Cascade(mrs_string name):MarSystem("Cascade", name)
{
    isComposite_ = true;
}

Cascade::~Cascade()
{
    deleteSlices();
}

void 
Cascade::deleteSlices()
{
    vector<realvec *>::const_iterator iter;
    for (iter = slices_.begin(); iter != slices_.end(); iter++) {
        delete *(iter);
    }
    slices_.clear();
}

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

void 
Cascade::myUpdate(MarControlPtr sender)
{
    if (marsystemsSize_ != 0) 
    {
        //propagate in flow controls to first child
        marsystems_[0]->setctrl("mrs_natural/inObservations", inObservations_);
        marsystems_[0]->setctrl("mrs_natural/inSamples", inSamples_);
        marsystems_[0]->setctrl("mrs_real/israte", israte_);
        marsystems_[0]->setctrl("mrs_string/inObsNames", inObsNames_);
        marsystems_[0]->update();

        // update dataflow component MarSystems in order 
        ostringstream oss;
        oss << marsystems_[0]->getctrl("mrs_string/onObsNames");   
        mrs_natural onObservations = marsystems_[0]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
        for (mrs_natural i=1; i < marsystemsSize_; ++i) 
        {
            marsystems_[i]->setctrl("mrs_natural/inSamples", marsystems_[i-1]->getctrl("mrs_natural/onSamples"));
            marsystems_[i]->setctrl("mrs_natural/inObservations", marsystems_[i-1]->getctrl("mrs_natural/onObservations"));
            marsystems_[i]->setctrl("mrs_real/israte", marsystems_[i-1]->getctrl("mrs_real/osrate"));
            marsystems_[i]->update();
            oss << marsystems_[i]->getctrl("mrs_string/onObsNames");
            onObservations += marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
        }
    
        //forward flow propagation
        setctrl(ctrl_onSamples_, marsystems_[0]->getctrl("mrs_natural/onSamples"));
        setctrl(ctrl_onObservations_, onObservations);
        setctrl(ctrl_osrate_, marsystems_[0]->getctrl("mrs_real/osrate"));
        setctrl(ctrl_onObsNames_, oss.str());
    
        // update buffers between components
        if ((mrs_natural)slices_.size() < marsystemsSize_) 
        {
            slices_.resize(marsystemsSize_, NULL);
        }
    
        for (mrs_natural i = 0; i < marsystemsSize_; ++i) 
        {
            if (slices_[i] != NULL) 
            {
                if ((slices_[i])->getRows() != marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>() || 
                    (slices_[i])->getCols() != marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>()) 
                {
                    delete slices_[i];
                    slices_[i] = new realvec(marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>(), 
                                             marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>());
                }
            }
            else 
            {
                slices_[i] = new realvec(marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>(), 
                                         marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>());
            }

            (slices_[i])->setval(0.0);
        }
    }
    else //if composite is empty...
        MarSystem::myUpdate(sender);
}
      
void 
Cascade::myProcess(realvec& in, realvec& out)
{
    mrs_natural o,t;
    mrs_natural outIndex = 0;
    mrs_natural localIndex = 0;
  
    if (marsystemsSize_ == 1) 
    {
        marsystems_[0]->process(in, out);
    }
    else if (marsystemsSize_ > 1) 
    {
        marsystems_[0]->process(in, *(slices_[0]));
        localIndex = marsystems_[0]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
        for (o = 0; o < localIndex; o++) 
        {
            for (t = 0; t < onSamples_; t++) 
            {
                out(outIndex + o,t) = (*(slices_[0]))(o,t);
            }
        }
        outIndex += localIndex;
        for (mrs_natural i = 1; i < marsystemsSize_; ++i) 
        {
            marsystems_[i]->process(*(slices_[i-1]), *(slices_[i]));
            localIndex = marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
            for (o = 0; o < localIndex; o++) 
            {
                for (t = 0; t < onSamples_; t++) 
                {
                    out(outIndex + o,t) = (*(slices_[i]))(o,t);
                }
            }
            outIndex += localIndex;
        }
    }
    else if(marsystemsSize_ == 0) //composite has no children!
    {
        MRSWARN("Cascade::process: composite has no children MarSystems - passing input to output without changes.");
        out = in;
    }
}

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