/// <summary>
/// Creates space in each color value (R,G,B) based upon BlockSize
/// </summary>
/// <param name="pixel">Individual pixel</param>
/// <returns>Pixel with altered color to allow for inserting space</returns>
private Color MakeSpaceInPixel(Color pixel)
{
int red = BitBlock.MakeStorageSpace(pixel.R, BlockSize);
int green = BitBlock.MakeStorageSpace(pixel.G, BlockSize);
int blue = BitBlock.MakeStorageSpace(pixel.B, BlockSize);
Color newColor = Color.FromArgb(red, green, blue);
return(newColor);
}
/// <summary>
/// Decodes message in image using the ImageBMP.
/// </summary>
public void ExtractMessage()
{
List <int> messNums = new List <int>();
for (int x = 0; x < ImageBMP.Width; x++)
{
for (int y = 0; y < ImageBMP.Height; y++)
{
Color pixelColor = ImageBMP.GetPixel(x, y);
messNums.Add(BitBlock.GetMod(pixelColor.R, BlockSize));
messNums.Add(BitBlock.GetMod(pixelColor.G, BlockSize));
messNums.Add(BitBlock.GetMod(pixelColor.B, BlockSize));
}
}
MessageArray = ToTwoDemArray(messNums.ToArray());
string temp = BitBlock.BinaryToMessage(MessageArray, BlockSize);
Message = temp;
}