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/* | |
# | |
# File : use_libgmic.cpp | |
# ( C++ source file ) | |
# | |
# Description : Show how to call the C++ version of the G'MIC library from a C++ source code. | |
# (for a C API, see 'use_libcgmic.c' instead) | |
# | |
# Copyright : David Tschumperlé | |
# ( http://tschumperle.users.greyc.fr/ ) | |
# | |
# Licenses : This file is 'dual-licensed', you have to choose one | |
# of the two licenses below to apply. | |
# | |
# CeCILL-C | |
# The CeCILL-C license is close to the GNU LGPL. | |
# ( http://cecill.info/licences/Licence_CeCILL-C_V1-en.html ) | |
# | |
# or CeCILL v2.1 | |
# The CeCILL license is compatible with the GNU GPL. | |
# ( http://cecill.info/licences/Licence_CeCILL_V2.1-en.html ) | |
# | |
# This software is governed either by the CeCILL or the CeCILL-C license | |
# under French law and abiding by the rules of distribution of free software. | |
# You can use, modify and or redistribute the software under the terms of | |
# the CeCILL or CeCILL-C licenses as circulated by CEA, CNRS and INRIA | |
# at the following URL: "http://cecill.info". | |
# | |
# As a counterpart to the access to the source code and rights to copy, | |
# modify and redistribute granted by the license, users are provided only | |
# with a limited warranty and the software's author, the holder of the | |
# economic rights, and the successive licensors have only limited | |
# liability. | |
# | |
# In this respect, the user's attention is drawn to the risks associated | |
# with loading, using, modifying and/or developing or reproducing the | |
# software by the user in light of its specific status of free software, | |
# that may mean that it is complicated to manipulate, and that also | |
# therefore means that it is reserved for developers and experienced | |
# professionals having in-depth computer knowledge. Users are therefore | |
# encouraged to load and test the software's suitability as regards their | |
# requirements in conditions enabling the security of their systems and/or | |
# data to be ensured and, more generally, to use and operate it in the | |
# same conditions as regards security. | |
# | |
# The fact that you are presently reading this means that you have had | |
# knowledge of the CeCILL and CeCILL-C licenses and that you accept its terms. | |
# | |
*/ | |
/* | |
Note : To compile this example, using g++, use : | |
g++ -o use_libgmic use_libgmic.cpp -lgmic -lfftw3 | |
*/ | |
/* | |
Uncomment the two lines below if you want to use the CImg library along with the G'MIC library. | |
*/ | |
//#include "CImg.h" | |
//using namespace cimg_library; | |
#include "gmic.h" | |
#include <cstdio> | |
#include <cmath> | |
int main() { | |
gmic::init_rc(); // Initialize resources folder | |
// First step : Create a list of input images. | |
//-------------------------------------------- | |
std::fprintf(stderr,"\n- 1st step : Create input list of images.\n"); | |
gmic_list<float> images; // List of images, will contain all images pixel data | |
gmic_list<char> images_names; // List of images names. Can be left empty if no names | |
images.assign(5); // Assign list to contain 5 images | |
for (unsigned int i = 0; i<images._width; ++i) { | |
gmic_image<float>& img = images[i]; | |
img.assign(256,256,1,3); // Assign i-th image with size 256x256x1x3 (2d color image) | |
std::fprintf(stderr," Input image %u = %ux%ux%ux%u, buffer : %p\n",i, | |
img._width, | |
img._height, | |
img._depth, | |
img._spectrum, | |
(void*)img._data); | |
// Fill each image buffer with sinus values (with different frequencies). | |
float *ptr = img; | |
for (unsigned int c = 0; c<img._spectrum; ++c) | |
for (unsigned int y = 0; y<img._height; ++y) | |
for (unsigned int x = 0; x<img._width; ++x) | |
*(ptr++) = std::cos(x/(1. + i))*std::sin(y/(1. + i + c)); | |
} | |
// Second step : Call G'MIC API to process input images. | |
//------------------------------------------------------ | |
std::fprintf(stderr,"\n- 2nd step : Call G'MIC interpreter.\n"); | |
try { | |
// Here you can call any G'MIC command you want ! | |
// (here, create a deformed average of the input images, and save it as a BMP file). | |
gmic("v + add normalize 0,255 flower 8 sharpen 100 output foo1.bmp",images,images_names); | |
} catch (gmic_exception &e) { // Catch exception, if an error occurred in the interpreter | |
std::fprintf(stderr,"\n- Error encountered when calling G'MIC : '%s'\n",e.what()); | |
return 0; | |
} | |
// Third step (alternative) : Call G'MIC API to process input images. | |
//--------------------------------------------------------------------- | |
std::fprintf(stderr,"\n- 3rd step (alternative) : Call G'MIC interpreter twice from empty instance.\n"); | |
gmic gmic_instance; // Construct first an empty 'gmic' instance | |
try { | |
// Here, we use the already constructed 'gmic' instance. The same instance can be used | |
// several times. | |
gmic_instance.run("v + blur 5 sharpen 1000 normalize 0,255 output foo2.bmp",images,images_names); | |
std::fputc('\n',stderr); | |
gmic_instance.run("v + +resize 50%,50% to_rgba[-1] rotate[-1] 30 drop_shadow[-1] 0,13 " | |
"blur_radial[0] 10% blend alpha output foo3.bmp",images,images_names); | |
} catch (gmic_exception &e) { // Catch exception, if an error occurred in the interpreter | |
std::fprintf(stderr,"\n- Error encountered when calling G'MIC : '%s'\n",e.what()); | |
return 0; | |
} | |
// Fourth step : get back modified image data. | |
//--------------------------------------------- | |
std::fprintf(stderr,"\n- 4th step : Returned %u output images.\n",images._width); | |
for (unsigned int i = 0; i<images._width; ++i) { | |
std::fprintf(stderr," Output image %u = %ux%ux%ux%u, buffer : %p\n",i, | |
images[i]._width, | |
images[i]._height, | |
images[i]._depth, | |
images[i]._spectrum, | |
(void*)images[i]._data); | |
} | |
// Fourth step : Free image resources. | |
//------------------------------------- | |
images.assign(0U); | |
// That's it ! | |
//------------- | |
std::fprintf(stderr,"\n- That's it !\n"); | |
return 0; | |
} |