public static void WriteFileHead(ref Bitmap image, int dataBitLength, out int?x, out int?y)
{
x = 0;
y = 0;
List <byte> bitsData = DataConverter.Integer2Bits(dataBitLength);
byte[] data = DataConverter.Bits2Bytes(bitsData).ToArray();
WriteFileBody(ref image, data, (int)x, (int)y);
x = 0;
y = 32;
}
public void Bits2BytesTest()
{
List <byte> bits = new List <byte>()
{
1, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 0, 0, 0, 0,
};
byte[] expected = new byte[] { 1, 3 };
List <byte> actual = DataConverter.Bits2Bytes(bits);
CollectionAssert.AreEqual(expected, actual);
}
public static byte[] ReadFileBody(Bitmap image, int dataBitLength, int x, int y)
{
try
{
List <byte> colorReds = ExtractColorReds(image, dataBitLength, x, y);
List <byte> bits = ExtractBitsFromColorRedsLsb(colorReds);
List <byte> bytes = DataConverter.Bits2Bytes(bits);
return(bytes.ToArray());
}
catch (Exception)
{
throw new PasswordWrongException();
}
}