/home/marsyas/marsyas/src/marsyas/Transposer.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 "Transposer.h"

using namespace std;
using namespace Marsyas;

Transposer::Transposer(mrs_string name):MarSystem("Transposer", name)
{
}

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

Transposer::~Transposer()
{
}

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

void
Transposer::myUpdate(MarControlPtr sender)
{
    ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE);
    ctrl_onObsNames_->setValue(ctrl_inObsNames_, NOUPDATE);

    if (getctrl("mrs_natural/inSamples")->to<mrs_natural>() != getctrl("mrs_natural/onObservations")->to<mrs_natural>())
        updControl("mrs_natural/onObservations", getctrl("mrs_natural/inSamples")->to<mrs_natural>());
    if (getctrl("mrs_natural/onSamples")->to<mrs_natural>() != getctrl("mrs_natural/inObservations")->to<mrs_natural>())
        updControl("mrs_natural/onSamples", getctrl("mrs_natural/inObservations")->to<mrs_natural>());
}


void 
Transposer::myProcess(realvec& in, realvec& out)
{
    mrs_natural o,t;
    // copy all values but switch the dimensions
    // if input has [m,n] then output has [n,m]
    for (o=0; o < inObservations_; o++)
    {
        for (t = 0; t < inSamples_; t++)
        {
            // transpose observations in channels and vice versa
            out(t,o) = in(o,t);
        }
    }
}

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