/home/marsyas/marsyas/src/marsyas/Memory.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 "Memory.h"

using std::cout;
using std::endl;

using std::ostringstream;
using namespace Marsyas;


Memory::Memory(mrs_string name):MarSystem("Memory",name)
{
    end_ = 0;
    counter_since_reset_ = 0;
    addControls();
}

Memory::~Memory()
{
}

Memory::Memory(const Memory& a):MarSystem(a)
{
    end_ = 0;
    counter_since_reset_ = 0 ;
    ctrl_reset_ = getctrl("mrs_bool/reset");
    ctrl_memSize_ = getctrl("mrs_natural/memSize");
}

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

void 
Memory::addControls()
{
    addctrl("mrs_natural/memSize", 40, ctrl_memSize_);
    setctrlState("mrs_natural/memSize", true);
    addctrl("mrs_bool/reset", false, ctrl_reset_);
    setctrlState("mrs_bool/reset", true);
}

void
Memory::myUpdate(MarControlPtr sender)
{
    (void) sender;
    MRSDIAG("Memory.cpp - Memory:myUpdate");


    mrs_natural memSize = ctrl_memSize_->to<mrs_natural>();

    if (memSize != 0) 
    {
        ctrl_onSamples_->setValue(ctrl_inSamples_->to<mrs_natural>() * memSize, 
                                  NOUPDATE);
        ctrl_onObservations_->setValue(ctrl_inObservations_, NOUPDATE);
        ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE);
    }
    else 
    {
        ctrl_onSamples_->setValue(ctrl_inSamples_->to<mrs_natural>(), NOUPDATE);
        ctrl_onObservations_->setValue(ctrl_inObservations_, NOUPDATE);
        ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE);

    }
    
    inObservations_ = ctrl_inObservations_->to<mrs_natural>();
    onObservations_ = ctrl_onObservations_->to<mrs_natural>();
    onSamples_ = ctrl_onSamples_->to<mrs_natural>();
    cir_out_.stretch(onObservations_, onSamples_);
    ostringstream oss;
    mrs_string inObsNames = ctrl_inObsNames_->to<mrs_string>();
    for (int i = 0; i < inObservations_; ++i)
    {
        mrs_string inObsName;
        mrs_string temp;
        inObsName = inObsNames.substr(0, inObsNames.find(","));
        temp = inObsNames.substr(inObsNames.find(",")+1, inObsNames.length());
        inObsNames = temp;
        oss << "Mem" << memSize << "_" << inObsName << ",";
    }
    ctrl_onObsNames_->setValue(oss.str(), NOUPDATE);

}

void 
Memory::myProcess(realvec& in, realvec& out)
{
    mrs_natural t,o,j;
    mrs_natural memSize = ctrl_memSize_->to<mrs_natural>();
    
    if (ctrl_reset_->to<mrs_bool>()) 
    {
        cir_out_.setval(0.0);
        end_ = 0;
        counter_since_reset_ = 0;
        
        // fill up with copies of first incoming vector
        for (j=0; j < onSamples_; j++)
        {
            for (o=0; o < inObservations_; o++)
            {
                cir_out_(o, end_) = in(o,0);
            }
            end_ = (end_ + 1) % onSamples_;         // circular buffer index    
        }

      }
    
    if (memSize != 0) 
    {
        for (t=0; t < inSamples_; t++) 
        {
            for (o=0; o < inObservations_; o++)
            {
                cir_out_(o, end_) = in(o,t);
            }
            end_ = (end_ + 1) % onSamples_;         // circular buffer index        
        }
        counter_since_reset_++;
    }
    else // memSize == 0 
    {
        for (t = 0; t < inSamples_; t++)
        {
            for (o=0; o < inObservations_; o++)
            {
                cir_out_(o,t) = in(o,t);
            }
        }
    }

    for (t = 0; t < onSamples_; t++)
      {
        for (o=0; o < inObservations_; o++)
          {
              out(o,t) = cir_out_(o,t);
          }
      }


    //MATLAB_PUT(out, "Memory_out");
    //MATLAB_EVAL("plot(Memory_out);");
}

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