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-/*
-LodePNG Examples
-
-Copyright (c) 2005-2012 Lode Vandevenne
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-*/
-
-#include "lodepng.h"
-#include <iostream>
-
-/*
-3 ways to encode a PNG from RGBA pixel data to a file (and 2 in-memory ways).
-NOTE: this samples overwrite the file or test.png without warning!
-*/
-
-//g++ lodepng.cpp example_encode.cpp -ansi -pedantic -Wall -Wextra -O3
-
-//Example 1
-//Encode from raw pixels to disk with a single function call
-//The image argument has width * height RGBA pixels or width * height * 4 bytes
-void encodeOneStep(const char* filename, std::vector<unsigned char>& image, unsigned width, unsigned height)
-{
-  //Encode the image
-  unsigned error = lodepng::encode(filename, image, width, height);
-
-  //if there's an error, display it
-  if(error) std::cout << "encoder error " << error << ": "<< lodepng_error_text(error) << std::endl;
-}
-
-//Example 2
-//Encode from raw pixels to an in-memory PNG file first, then write it to disk
-//The image argument has width * height RGBA pixels or width * height * 4 bytes
-void encodeTwoSteps(const char* filename, std::vector<unsigned char>& image, unsigned width, unsigned height)
-{
-  std::vector<unsigned char> png;
-
-  unsigned error = lodepng::encode(png, image, width, height);
-  if(!error) lodepng::save_file(png, filename);
-
-  //if there's an error, display it
-  if(error) std::cout << "encoder error " << error << ": "<< lodepng_error_text(error) << std::endl;
-}
-
-//Example 3
-//Save a PNG file to disk using a State, normally needed for more advanced usage.
-//The image argument has width * height RGBA pixels or width * height * 4 bytes
-void encodeWithState(const char* filename, std::vector<unsigned char>& image, unsigned width, unsigned height)
-{
-  std::vector<unsigned char> png;
-  lodepng::State state; //optionally customize this one
-
-  unsigned error = lodepng::encode(png, image, width, height, state);
-  if(!error) lodepng::save_file(png, filename);
-
-  //if there's an error, display it
-  if(error) std::cout << "encoder error " << error << ": "<< lodepng_error_text(error) << std::endl;
-}
-
-//saves image to filename given as argument. Warning, this overwrites the file without warning!
-int main(int argc, char *argv[])
-{
-  //NOTE: this sample will overwrite the file or test.png without warning!
-  const char* filename = argc > 1 ? argv[1] : "test.png";
-
-  //generate some image
-  unsigned width = 512, height = 512;
-  std::vector<unsigned char> image;
-  image.resize(width * height * 4);
-  for(unsigned y = 0; y < height; y++)
-  for(unsigned x = 0; x < width; x++)
-  {
-    image[4 * width * y + 4 * x + 0] = 255 * !(x & y);
-    image[4 * width * y + 4 * x + 1] = x ^ y;
-    image[4 * width * y + 4 * x + 2] = x | y;
-    image[4 * width * y + 4 * x + 3] = 255;
-  }
-
-  encodeOneStep(filename, image, width, height);
-}