private Color embedTextMessage(byte[] messageData, Color sourcePixelColor, int currentIndex, int bpcc)
{
var pixelInfo = ColorByteArrayConverter.GetByteArray(sourcePixelColor);
var count = 0;
var embeddedPixelInfo = new byte[PixelConstants.NumberOfColorChannels];
foreach (var colorInfo in pixelInfo)
{
var currColor = colorInfo;
currColor >>= bpcc;
currColor <<= bpcc;
var bitsToAdd = new BitArray(this.numberOfBitsInByte);
for (var j = 0; j < bpcc; j++)
{
if (currentIndex + j < messageData.Length * this.numberOfBitsInByte)
{
var currentByte = messageData[this.currentByteIndex];
var currentBit = isBitSet(currentByte, currentIndex % 8);
bitsToAdd.Set(j, currentBit);
if (currentIndex != 0 && (currentIndex + j) % this.numberOfBitsInByte == 0)
{
this.currentByteIndex++;
}
}
else
{
bitsToAdd.Set(j, false);
}
}
var bitsAsByte = new byte[1];
bitsToAdd.CopyTo(bitsAsByte, 0);
currColor |= bitsAsByte[0];
embeddedPixelInfo[count] = currColor;
currentIndex += bpcc;
count++;
}
return(Color.FromArgb(0, embeddedPixelInfo[0], embeddedPixelInfo[1], embeddedPixelInfo[2]));
}
private void extractMessageBitsFromPixel(Color embeddedPixelColor, int count)
{
var colorInfo = ColorByteArrayConverter.GetByteArray(embeddedPixelColor);
foreach (var color in colorInfo)
{
var currColor = color;
var colorByte = new[] { currColor };
var colorBits = new BitArray(colorByte);
for (var j = 0; j < this.bpcc; j++)
{
this.embeddedBits.Set(count, colorBits.Get(j));
this.handleExtractLetter(count);
count++;
}
}
}