/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2010 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLFilter/src/WeightChannelsOp.cpp                     **
** Module : ICLFilter                                              **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** Commercial License                                              **
** ICL can be used commercially, please refer to our website       **
** www.iclcv.org for more details.                                 **
**                                                                 **
** GNU General Public License Usage                                **
** Alternatively, this file may be used under the terms of the     **
** GNU General Public License version 3.0 as published by the      **
** Free Software Foundation and appearing in the file LICENSE.GPL  **
** included in the packaging of this file.  Please review the      **
** following information to ensure the GNU General Public License  **
** version 3.0 requirements will be met:                           **
** http://www.gnu.org/copyleft/gpl.html.                           **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
*********************************************************************/

#include <ICLFilter/WeightChannelsOp.h>
#include <ICLFilter/UnaryArithmeticalOp.h>

namespace icl {
  
  using namespace std;
  
  void WeightChannelsOp::apply (const ImgBase *poSrc, ImgBase **ppoDst) {
    ICLASSERT_RETURN(poSrc);
    ICLASSERT_RETURN( (int) m_vecWeights.size() == poSrc->getChannels() );
    
    const ImgBase *oTmpSrcImg;
    ImgBase *oTmpDstImg;

    if(!UnaryOp::prepare(ppoDst,poSrc)) return;
    
    UnaryArithmeticalOp op = UnaryArithmeticalOp(UnaryArithmeticalOp::mulOp);
    
    for (int c=0;c<poSrc->getChannels();c++) {
      oTmpSrcImg = poSrc->selectChannel(c);
      oTmpDstImg = (*ppoDst)->selectChannel(c);
      op.setValue(m_vecWeights[c]);
      op.apply(oTmpSrcImg, &oTmpDstImg);
      delete oTmpSrcImg;
      delete oTmpDstImg;
    }
  }
} // namespace icl