public override void Execute()
{
LoggerFacade.Highlight($"Długość tekstu do zakodowania: {this.textToCoding.Length}");
Bitmap bitmap = new Bitmap(Image.FromFile(bitmapPath));
Color color;
char[] chars = this.textToCoding.ToCharArray();
int charIndex = 0;
uint charValue = (uint)chars.Length;
uint iCount = (uint)(chars.Length * 4) + 4;
int bitsPairNumber = 0;
bool[] charBits = new bool[16];
int x = 0;
int y = 0;
for (uint i = 0; i < iCount; i++)
{
bitsPairNumber = (int)(i % 4);
if (bitsPairNumber == 0)
{
if (i > 0)
{
charValue = chars[charIndex];
charIndex++;
}
for (int f = 0; f < 16; f++)
{
uint m = (uint)(1 << f);
bool j = (charValue & m) == m;
charBits[f] = j;
}
}
color = bitmap.GetPixel(x, y);
int[] c = new int[] { color.A, color.R, color.G, color.B };
for (int k = 0; k < 4; k++)
{
int index = 4 * bitsPairNumber + k;
c[k] = charBits[index] ? c[k] |= 1 : c[k] &= ~1;
}
bitmap.SetPixel(x, y, Color.FromArgb(c[0], c[1], c[2], c[3]));
if (x == bitmap.Width - 1)
{
x = 0;
y++;
}
else
{
x++;
}
if (y == bitmap.Height - 1)
{
this.IsOutRange = true;
return;
}
}
bitmap.Save(outcomeBitmapPath, ImageFormat.Png); // NOTE: jpg is also saved as bitmap
if (this.IsOutRange)
{
LoggerFacade.Warn($"Ostrzeżenie: Zabrakło wolnych bitów do zakodowania!");
}
}
