C# [SOURCE] Data to bitmap and back using pixel color values

Code

/*

 * Convert binary data to bitmap and vice versa

 * Copyright (C) 2012 0xDEADDEAD

 * Removal of this copyright is prohibited

 */



using System;

using System.Collections.Generic;

using System.Drawing.Imaging;

using System.Text;

using System.Drawing;



namespace TestApp

{

    public static class BitmapDataStorage

    {

  public static Bitmap CreateBitmapFromData(byte[] binaryData)

  {

    // calc padding amount

    int paddedSize = binaryData.Length + (3 - binaryData.Length%3) + 6;

    int pixelCount = paddedSize/3;



    int countPerRow = (int) Math.Ceiling(Math.Sqrt(pixelCount));



    Bitmap bmp = new Bitmap(countPerRow, countPerRow, PixelFormat.Format24bppRgb);



    byte[] paddedData = new byte[paddedSize];

    Buffer.BlockCopy(BitConverter.GetBytes(binaryData.Length), 0, paddedData, 0, 4);

    Buffer.BlockCopy(binaryData, 0, paddedData, 4, binaryData.Length);



    int columnIndex = 0;

    int rowNumber = bmp.Height - 1;

    for (int i = 0; i < pixelCount; i++)

    {

    if (columnIndex == countPerRow)

    {

    columnIndex = 0;

    rowNumber--;

    }



    Color pixelColor = Color.FromArgb(

    paddedData[i*3 + 2],

    paddedData[i*3 + 1],

    paddedData[i*3]);

    bmp.SetPixel(columnIndex, rowNumber, pixelColor);

    columnIndex++;



    }

    return bmp;

  }



  public static byte[] ReadDataFromBitmap(Bitmap bitmap)

  {

    byte[] buffer = new byte[bitmap.Width*bitmap.Height*3];



    int i = 0;

    for (int y = bitmap.Height - 1; y >= 0; y--)

    {

    for (int x = 0; x < bitmap.Width; x++)

    {

    Color pixelColor = bitmap.GetPixel(x, y);

    buffer[i * 3 + 2] = pixelColor.R;

    buffer[i * 3 + 1] = pixelColor.G;

    buffer[i * 3] = pixelColor.B;

    i++;

    }

    }



    byte[] data = new byte[BitConverter.ToInt32(buffer, 0)];

    Buffer.BlockCopy(buffer, 4, data, 0, data.Length);

    return data;

  }

    }

}

Code

byte[] buf = System.IO.File.ReadAllBytes("0xViewer.exe");

    BitmapDataStorage.CreateBitmapFromData(buf).Save("bmp.bmp", ImageFormat.Bmp);



    Bitmap loaded = (Bitmap)Bitmap.FromFile("bmp.bmp");



    System.IO.File.WriteAllBytes("result.exe", BitmapDataStorage.ReadDataFromBitmap(loaded));