mexPfmread.C

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/*!@file Matlab/mexPfmread.C Read PFM images into matlab
 */

// //////////////////////////////////////////////////////////////////// //
// The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2001 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: Dirk Walther <walther@caltech.edu>
// $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Matlab/mexPfmread.C $
// $Id: mexPfmread.C 6688 2006-06-06 19:29:43Z rjpeters $
//

#include <mex.h>

#include "Matlab/mexConverts.H"
#include "Image/Image.H"
#include "Raster/Raster.H"

#include <exception>

// ##########################################################################
//! Read a PFM image into matlab
void mexFunction (int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
  MYLOGVERB = LOG_INFO;
  LOG_FLAGS &= (~LFATAL_PRINTS_ABORT);
  LOG_FLAGS &= (~LFATAL_XTRA_NOISY);

  if (nrhs < 1)  mexErrMsgTxt("Missing required filename parameter");

  try
    {
      // get the file name:
      const int siz = mxGetN(prhs[0]) + 1;

      // (no need to mxFree() this pointer; matlab does that
      // automatically when the mex function returns)
      char* fname = (char*)mxCalloc(siz, sizeof(char));
      mxGetString(prhs[0], fname, siz);

      // read the image:
      const Image<float> img = Raster::ReadFloat(fname, RASFMT_PFM);

      // convert to doubles:
      const Image<double> imgd = img;

      // return the image if desired:
      if (nlhs > 0)
        plhs[0] = Image2mexArray(imgd);
    }
  catch (std::exception& e)
    {
      mexErrMsgTxt(e.what());
    }
}