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diff --git a/example_bmp2png.cpp b/example_bmp2png.cpp
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--- a/example_bmp2png.cpp
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-/*
-LodePNG Examples
-
-Copyright (c) 2005-2010 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.
-*/
-
-/*
-Load a BMP image and convert it to a PNG image. This example also shows how
-to use other data with the same memory structure as BMP, such as the image
-format native to win32, GDI (HBITMAP, BITMAPINFO, ...) often encountered if
-you're programming for Windows in Visual Studio.
-
-This example only supports uncompressed 24-bit RGB or 32-bit RGBA bitmaps.
-For other types of BMP's, use a full fledged BMP decoder, or convert the
-bitmap to 24-bit or 32-bit format.
-
-NOTE: it overwrites the output file without warning if it exists!
-*/
-
-//g++ lodepng.cpp example_bmp2png.cpp -ansi -pedantic -Wall -Wextra -O3
-
-#include "lodepng.h"
-
-#include <iostream>
-
-//returns 0 if all went ok, non-0 if error
-//output image is always given in RGBA (with alpha channel), even if it's a BMP without alpha channel
-unsigned decodeBMP(std::vector<unsigned char>& image, unsigned& w, unsigned& h, const std::vector<unsigned char>& bmp)
-{
-  static const unsigned MINHEADER = 54; //minimum BMP header size
-  
-  if(bmp.size() < MINHEADER) return -1;
-  if(bmp[0] != 'B' || bmp[1] != 'M') return 1; //It's not a BMP file if it doesn't start with marker 'BM'
-  unsigned pixeloffset = bmp[10] + 256 * bmp[11]; //where the pixel data starts
-  //read width and height from BMP header
-  w = bmp[18] + bmp[19] * 256;
-  h = bmp[22] + bmp[23] * 256;
-  //read number of channels from BMP header
-  if(bmp[28] != 24 && bmp[28] != 32) return 2; //only 24-bit and 32-bit BMPs are supported.
-  unsigned numChannels = bmp[28] / 8;
-
-  //The amount of scanline bytes is width of image times channels, with extra bytes added if needed
-  //to make it a multiple of 4 bytes.
-  unsigned scanlineBytes = w * numChannels;
-  if(scanlineBytes % 4 != 0) scanlineBytes = (scanlineBytes / 4) * 4 + 4;
-
-  unsigned dataSize = scanlineBytes * h;
-  if(bmp.size() < dataSize + pixeloffset) return 3; //BMP file too small to contain all pixels
-
-  image.resize(w * h * 4);
-
-  /*
-  There are 3 differences between BMP and the raw image buffer for LodePNG:
-  -it's upside down
-  -it's in BGR instead of RGB format (or BRGA instead of RGBA)
-  -each scanline has padding bytes to make it a multiple of 4 if needed
-  The 2D for loop below does all these 3 conversions at once.
-  */
-  for(unsigned y = 0; y < h; y++)
-  for(unsigned x = 0; x < w; x++)
-  {
-    //pixel start byte position in the BMP
-    unsigned bmpos = pixeloffset + (h - y - 1) * scanlineBytes + numChannels * x;
-    //pixel start byte position in the new raw image
-    unsigned newpos = 4 * y * w + 4 * x;
-    if(numChannels == 3)
-    {
-      image[newpos + 0] = bmp[bmpos + 2]; //R
-      image[newpos + 1] = bmp[bmpos + 1]; //G
-      image[newpos + 2] = bmp[bmpos + 0]; //B
-      image[newpos + 3] = 255;            //A
-    }
-    else
-    {
-      image[newpos + 0] = bmp[bmpos + 3]; //R
-      image[newpos + 1] = bmp[bmpos + 2]; //G
-      image[newpos + 2] = bmp[bmpos + 1]; //B
-      image[newpos + 3] = bmp[bmpos + 0]; //A
-    }
-  }
-  return 0;
-}
-
-int main(int argc, char *argv[])
-{
-  if(argc < 3)
-  {
-    std::cout << "Please provice input PNG and output BMP file names" << std::endl;
-    return 0;
-  }
-
-  std::vector<unsigned char> bmp;
-  lodepng::load_file(bmp, argv[1]);
-  std::vector<unsigned char> image;
-  unsigned w, h;
-  unsigned error = decodeBMP(image, w, h, bmp);
-
-  if(error)
-  {
-    std::cout << "BMP decoding error " << error << std::endl;
-    return 0;
-  }
-  
-  std::vector<unsigned char> png;
-  error = lodepng::encode(png, image, w, h);
-
-  if(error)
-  {
-    std::cout << "PNG encoding error " << error << ": " << lodepng_error_text(error) << std::endl;
-    return 0;
-  }
-  
-  lodepng::save_file(png, argv[2]);
-  
-}