TopdownLearnerFactory.C

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/*!@file TIGS/TopdownLearnerFactory.C Build a TopdownLearner from a type string */

// //////////////////////////////////////////////////////////////////// //
// The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005   //
// by the University of Southern California (USC) and the iLab at USC.  //
// See http://iLab.usc.edu for information about this project.          //
// //////////////////////////////////////////////////////////////////// //
// Major portions of the iLab Neuromorphic Vision Toolkit are protected //
// under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
// in Visual Environments, and Applications'' by Christof Koch and      //
// Laurent Itti, California Institute of Technology, 2001 (patent       //
// pending; application number 09/912,225 filed July 23, 2001; see      //
// http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
// //////////////////////////////////////////////////////////////////// //
// This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
//                                                                      //
// The iLab Neuromorphic Vision C++ Toolkit 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.     //
//                                                                      //
// The iLab Neuromorphic Vision C++ Toolkit 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 the iLab Neuromorphic Vision C++ Toolkit; if not, write   //
// to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,   //
// Boston, MA 02111-1307 USA.                                           //
// //////////////////////////////////////////////////////////////////// //
//
// Primary maintainer for this file: Rob Peters <rjpeters at usc dot edu>
// $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/TIGS/TopdownLearnerFactory.C $
// $Id: TopdownLearnerFactory.C 5884 2005-11-07 19:04:42Z rjpeters $
//

#ifndef TIGS_TOPDOWNLEARNERFACTORY_C_DEFINED
#define TIGS_TOPDOWNLEARNERFACTORY_C_DEFINED

#include "TIGS/TopdownLearnerFactory.H"

#include "TIGS/LeastSquaresLearner.H"
#include "TIGS/MeanEyeposLearner.H"
#include "TIGS/MovingAvgLearner.H"

nub::ref<TopdownLearner> makeTopdownLearner(OptionManager& mgr,
                                            const std::string& type)
{
  std::string::size_type colon = type.find_first_of(':');
  if (colon != type.npos)
    {
      if (colon+1 >= type.length())
        LFATAL("bogus learner type string '%s'", type.c_str());

      std::string parenttype = type.substr(0, colon);
      std::string childtype = type.substr(colon+1);

      nub::ref<TopdownLearner> child = makeTopdownLearner(mgr, childtype);

      if (parenttype == "avg")
        return nub::ref<TopdownLearner>(new MovingAvgLearner(mgr, child));
      // else...
      LFATAL("bogus parent learner type '%s'", parenttype.c_str());
    }
  else
    {
      if (type == "lsq")
        return nub::ref<TopdownLearner>(new LeastSquaresLearner(mgr));
      else if (type == "mep")
        return nub::ref<TopdownLearner>(new MeanEyeposLearner(mgr));
      // else...
      LFATAL("bogus learner type '%s'", type.c_str());
    }

  // can't happen:
  return nub::soft_ref<TopdownLearner>();
}

// ######################################################################
/* So things look consistent in everyone's emacs... */
/* Local Variables: */
/* mode: c++ */
/* indent-tabs-mode: nil */
/* End: */

#endif // TIGS_TOPDOWNLEARNERFACTORY_C_DEFINED