/home/marsyas/marsyas/src/marsyas/Parallel.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 "Parallel.h"


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

using namespace Marsyas;

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

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

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

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

void Parallel::myUpdate(MarControlPtr sender)
{
    if (marsystemsSize_ != 0) 
    {
        mrs_natural highestStabilizingDelay = ctrl_inStabilizingDelay_->to<mrs_natural>();
        //propagate in flow controls to first child
        marsystems_[0]->setctrl("mrs_natural/inSamples", inSamples_);
        marsystems_[0]->setctrl("mrs_real/israte", israte_);
        marsystems_[0]->setctrl("mrs_natural/inStabilizingDelay", inStabilizingDelay_);

        mrs_string inObsName;
        mrs_string temp;
        mrs_string inObsNames = ctrl_inObsNames_->to<mrs_string>(); 
        
        inObsName = inObsNames.substr(0, inObsNames.find(","));
        temp = inObsNames.substr(inObsNames.find(",")+1, inObsNames.length());
        inObsNames = temp;
        marsystems_[0]->setctrl("mrs_string/inObsNames", inObsName + ",");
        marsystems_[0]->update();

        mrs_natural inObservations = marsystems_[0]->getctrl("mrs_natural/inObservations")->to<mrs_natural>();
        mrs_natural onObservations = marsystems_[0]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
        mrs_natural localStabilizingDelay = marsystems_[0]->getctrl("mrs_natural/onStabilizingDelay")->to<mrs_natural>();
        if (highestStabilizingDelay < localStabilizingDelay)
            highestStabilizingDelay = localStabilizingDelay;

        ostringstream oss;
        oss << marsystems_[0]->getctrl("mrs_string/onObsNames");

        for (mrs_natural i=1; i < marsystemsSize_; ++i) 
        {
            marsystems_[i]->setctrl("mrs_natural/inSamples", marsystems_[0]->getctrl("mrs_natural/inSamples"));
            marsystems_[i]->setctrl("mrs_real/israte", marsystems_[0]->getctrl("mrs_real/israte")); //[!] israte
            marsystems_[i]->setctrl("mrs_natural/inStabilizingDelay", inStabilizingDelay_);

        
            inObsName = inObsNames.substr(0, inObsNames.find(","));
            temp = inObsNames.substr(inObsNames.find(",")+1, inObsNames.length());
            inObsNames = temp;
            marsystems_[i]->setctrl("mrs_string/inObsNames", inObsName + ",");
            
            marsystems_[i]->update();
            oss << marsystems_[i]->getctrl("mrs_string/onObsNames");

            inObservations += marsystems_[i]->getctrl("mrs_natural/inObservations")->to<mrs_natural>();
            onObservations += marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
            localStabilizingDelay = marsystems_[0]->getctrl("mrs_natural/onStabilizingDelay")->to<mrs_natural>();
            if (highestStabilizingDelay < localStabilizingDelay)
                highestStabilizingDelay = localStabilizingDelay;
        }

        //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());
        setctrl(ctrl_onStabilizingDelay_, highestStabilizingDelay);

        // update buffers for children MarSystems
        if((mrs_natural)slices_.size() < 2*marsystemsSize_) 
        {
            slices_.resize(2*marsystemsSize_, NULL);
        }

        for (mrs_natural i = 0; i < marsystemsSize_; ++i) 
        {
            if (slices_[2*i] != NULL) 
            {
                if ((slices_[2*i])->getRows() != marsystems_[i]->getctrl("mrs_natural/inObservations")->to<mrs_natural>() ||
                    (slices_[2*i])->getCols() != marsystems_[i]->getctrl("mrs_natural/inSamples")->to<mrs_natural>()) 
                {
                    delete slices_[2*i];
                    slices_[2*i] = new realvec(marsystems_[i]->getctrl("mrs_natural/inObservations")->to<mrs_natural>(), 
                                               marsystems_[i]->getctrl("mrs_natural/inSamples")->to<mrs_natural>());
                }
            }
            else 
                slices_[2*i] = new realvec(marsystems_[i]->getctrl("mrs_natural/inObservations")->to<mrs_natural>(), 
                                           marsystems_[i]->getctrl("mrs_natural/inSamples")->to<mrs_natural>());

            (slices_[2*i])->setval(0.0);

            if (slices_[2*i+1] != NULL) 
            {
                if ((slices_[2*i+1])->getRows() != marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>() ||
                    (slices_[2*i+1])->getCols() != marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>()) 
                {
                    delete slices_[2*i+1];
                    slices_[2*i+1] = new realvec(marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>(), 
                                                 marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>());
                }
            }
            else 
                slices_[2*i+1] = new realvec(marsystems_[i]->getctrl("mrs_natural/onObservations")->to<mrs_natural>(), 
                                             marsystems_[i]->getctrl("mrs_natural/onSamples")->to<mrs_natural>());
            
            (slices_[2*i+1])->setval(0.0);
        }
    }
    else //if composite is empty...
        MarSystem::myUpdate(sender);
}

void Parallel::myProcess(realvec& in, realvec& out)
{
    mrs_natural t,o;
    mrs_natural inIndex = 0;
    mrs_natural outIndex = 0;
    mrs_natural localIndex = 0;

    if (marsystemsSize_ == 1) 
    {
        marsystems_[0]->process(in, out);
    }
    else if (marsystemsSize_ > 1) 
    {
        for (mrs_natural i = 0; i < marsystemsSize_; ++i) 
        {
            localIndex = marsystems_[i]->getctrl("mrs_natural/inObservations")->to<mrs_natural>();
            for (o = 0; o < localIndex; o++) 
            {
                // avoid reading unallocated memory
                if ((inIndex + o) < in.getRows()) {
                for (t = 0; t < inSamples_; t++) //lmartins: was t < onSamples [!]
                {
                    (*(slices_[2*i]))(o,t) = in(inIndex + o,t);
                }
                } else {
                for (t = 0; t < inSamples_; t++) {
                    (*(slices_[2*i]))(o,t) = 0;
                }
                }
            }
            inIndex += localIndex;
            marsystems_[i]->process(*(slices_[2*i]), *(slices_[2*i+1]));
            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_[2*i+1]))(o,t);
                }
            }
            outIndex += localIndex;
        }
    }
    else if(marsystemsSize_ == 0) //composite has no children!
    {
        MRSWARN("Parallel::process: composite has no children MarSystems - passing input to output without changes.");
        out = in;
    }
}

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