jpg_file_io.cpp

//stl
#include <iostream>
//slip
#include "ColorImage.hpp"
#include "io_tools.hpp"
#include "JpegReader.hpp"
#include "JpegWriter.hpp"


void usage(const char *name) {
                std::cout << "usage :\n\n";
                std::cout << "\t " << name << " input_jpg_color_image ";
                std::cout << std::endl;
}


int main(int argc, char* argv[])
{
                if (argc < 2) {
                                usage(*argv);
                                return 0;
                }
                std::string test_name(*argv);
                std::string filename(argv[1]);
                std::string ext;
                std::string output_base;
                slip::split_extension(filename,output_base,ext);

                //Read the color image
                slip::JpegReader<slip::ColorImage<double>,double,3,1> coul_jpgread(filename);
                slip::ColorImage<double> coul_image;
                coul_jpgread.read(coul_image);

                //Copy the first component to the others
                std::copy(coul_image.begin(0),coul_image.end(0),coul_image.begin(1));
                std::copy(coul_image.begin(0),coul_image.end(0),coul_image.begin(2));

                //Write the output image
                slip::JpegWriter<slip::ColorImage<double>,double,3> ImageCoulWriter(output_base + "_nvg" + ext,
                                                coul_image.width(),coul_image.height());
                ImageCoulWriter.write(coul_image);

                std::cout << output_base + "_nvg" + ext << " written.\n";
                std::cout << test_name << " successful executed.\n";
                return 0;
}