/home/marsyas/marsyas/src/marsyas/Power.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 "Power.h"

using std::ostringstream;
using namespace Marsyas;

Power::Power(mrs_string name):MarSystem("Power",name)
{
      addControls();
}

Power::Power(const Power& a) : MarSystem(a)
{
}

Power::~Power()
{
}


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

void
Power::addControls()
{

}

void
Power::myUpdate(MarControlPtr sender)
{
    (void) sender;
  MRSDIAG("Power.cpp - Power:myUpdate");
  
 setctrl("mrs_natural/onSamples", 1);
    setctrl("mrs_natural/onObservations", 
        getctrl("mrs_natural/inObservations"));
    setctrl("mrs_real/osrate", 
        getctrl("mrs_real/israte"));
    // Add prefix to the observation names.
    mrs_string inObsNames = ctrl_inObsNames_->to<mrs_string>();
    ctrl_onObsNames_->setValue(obsNamesAddPrefix(inObsNames, "Power_"), NOUPDATE);
}


void 
Power::myProcess(realvec& in, realvec& out)
{
    mrs_natural t,o;
  //checkFlow(in,out);

  out.setval(0.0);
  for (o=0; o < inObservations_; o++)
    {
        mrs_real tmp=0;
        for (t = 0; t < inSamples_; t++)
      {
         tmp+= in(o,t)*in(o,t);
      }
        out(o,0) = sqrt(tmp);
    }
}







    
    

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