STBWriter.ih

/**
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as
 *  published by the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>.
 *
 **/
 
/**
 * @file STBWriter.ih
 * @author David Coeurjolly (\c david.coeurjolly@liris.cnrs.fr )
 * Laboratoire d'InfoRmatique en Image et Systemes d'information - LIRIS (CNRS, UMR 5205), CNRS, France
 *
 * @date 2022/06/14
 *
 * Implementation of inline methods defined in STBWriter.h
 *
 * This file is part of the DGtal library.
 */
 
#ifndef NO_ADD_STBIMAGE_IMPLEMENT //To avoid duplicated linking errors (like LNK2005 in MSVC)
#pragma once
#define STB_IMAGE_WRITE_IMPLEMENTATION
#endif //NO_ADD_STBIMAGE_IMPLEMENT
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated"
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated"
#pragma clang diagnostic ignored "-Wmissing-field-initializers"
#include <stb/stb_image_write.h>
#pragma GCC diagnostic pop
#pragma clang diagnostic pop
 
///////////////////////////////////////////////////////////////////////////////
// Interface - public :
 
 
template <typename TImageContainer, typename TFunctor>
inline
bool
DGtal::STBWriter<TImageContainer, TFunctor>::exportPNG(const std::string & filename,
                                                         const TImageContainer & anImage,
                                                         const Functor & aFunctor)
{
  const int w = anImage.domain().upperBound()[0]  -  anImage.domain().lowerBound()[0] +1 ;
  const int h = anImage.domain().upperBound()[1]  -  anImage.domain().lowerBound()[1] +1 ;
  const int comp=4;
  unsigned char *data = (unsigned char*)malloc( w * h * comp );
  
  unsigned int cpt=0;
  for(const auto &value: anImage)
  {
    Color v = aFunctor(value);
    data[4*cpt]   = v.red();
    data[4*cpt+1] = v.green();
    data[4*cpt+2] = v.blue();
    data[4*cpt+3] = v.alpha();
    ++cpt;
  }
  const int error =  stbi_write_png(filename.c_str(),  w,  h, comp, data, w*comp);
  free(data);
  return error;
}
 
template <typename TImageContainer, typename TFunctor>
inline
bool
DGtal::STBWriter<TImageContainer, TFunctor>::exportBMP(const std::string & filename,
                                                       const TImageContainer & anImage,
                                                       const Functor & aFunctor)
{
  const int w = anImage.domain().upperBound()[0]  -  anImage.domain().lowerBound()[0] +1 ;
  const int h = anImage.domain().upperBound()[1]  -  anImage.domain().lowerBound()[1] +1 ;
  const int comp=4;
  unsigned char *data = (unsigned char*)malloc( sizeof(unsigned char)*w * h * comp);
  
  unsigned int cpt=0;
  for(const auto &value: anImage)
  {
    Color v = aFunctor(value);
    data[4*cpt]   = v.red();
    data[4*cpt+1] = v.green();
    data[4*cpt+2] = v.blue();
    data[4*cpt+3] = v.alpha();
    ++cpt;
  }
  const int error =  stbi_write_bmp(filename.c_str(),  w,  h, comp, data);
  free(data);
  return error;
}
 
 
template <typename TImageContainer, typename TFunctor>
inline
bool
DGtal::STBWriter<TImageContainer, TFunctor>::exportTGA(const std::string & filename,
                                                       const TImageContainer & anImage,
                                                       const Functor & aFunctor)
{
  const int w = anImage.domain().upperBound()[0]  -  anImage.domain().lowerBound()[0] +1 ;
  const int h = anImage.domain().upperBound()[1]  -  anImage.domain().lowerBound()[1] +1 ;
  const int comp=4;
  unsigned char *data = (unsigned char*)malloc( sizeof(unsigned char)*w * h * comp);
  
  unsigned int cpt=0;
  for(const auto &value: anImage)
  {
    Color v = aFunctor(value);
    data[4*cpt]   = v.red();
    data[4*cpt+1] = v.green();
    data[4*cpt+2] = v.blue();
    data[4*cpt+3] = v.alpha();
    ++cpt;
  }
  const int error =  stbi_write_bmp(filename.c_str(),  w,  h, comp, data);
  free(data);
  return error;
}
template <typename TImageContainer, typename TFunctor>
inline
bool
DGtal::STBWriter<TImageContainer, TFunctor>::exportJPG(const std::string & filename,
                                                       const TImageContainer & anImage,
                                                       const Functor & aFunctor,
                                                       int quality )
{
  const int w = anImage.domain().upperBound()[0]  -  anImage.domain().lowerBound()[0] +1 ;
  const int h = anImage.domain().upperBound()[1]  -  anImage.domain().lowerBound()[1] +1 ;
  const int comp=4;
  unsigned char *data = (unsigned char*)malloc( sizeof(unsigned char)*w * h * comp);
  
  unsigned int cpt=0;
  for(const auto &value: anImage)
  {
    Color v = aFunctor(value);
    data[4*cpt]   = v.red();
    data[4*cpt+1] = v.green();
    data[4*cpt+2] = v.blue();
    data[4*cpt+3] = v.alpha();
    ++cpt;
  }
  const int error =  stbi_write_jpg(filename.c_str(),  w,  h, comp, data, quality);
  free(data);
  return error;
}
//                                                                           //
///////////////////////////////////////////////////////////////////////////////