public ImageRgba32SteganographerBenchmarks()
{
_image = Image.Load <Rgba32>("resources/images/drawing.png");
_imageWithMessage = Image.Load <Rgba32>("resources/images/drawing.png");
_message = File.ReadAllText("resources/data/TenThousandWords.txt");
_steganographer = ImageRgba32SteganographerBuilder.Default;
_steganographer.EmbedMessage(_imageWithMessage, _message);
}
public static MemoryStream ExtractStream <T>(this ISteganographer <T> steganographer, T target) where T : class
{
var outputStream = new MemoryStream();
steganographer.ExtractToStream(target, outputStream);
outputStream.Seek(0, SeekOrigin.Begin);
return(outputStream);
}
public static void EmbedStream <T>(this ISteganographer <T> steganographer, T target, Stream dataStream) where T : class
{
var targetCapacity = steganographer.CalculateBitCapacity(target) / 8;
var requiredCapacity = sizeof(int) + dataStream.Length;
if (requiredCapacity > targetCapacity)
{
throw new SteganographException($"The target does not have enough storage capacity, required:{requiredCapacity} bytes, available: {targetCapacity} bytes");
}
var bitReader = new BitReader(dataStream);
steganographer.Embed(target, bitReader);
}
public static string ExtractMessage <T>(this ISteganographer <T> steganographer, T target) where T : class
{
return(Encoding.UTF8.GetString(steganographer.ExtractBytes(target)));
}
public static void EmbedMessage <T>(this ISteganographer <T> steganographer, T target, string message) where T : class
{
steganographer.EmbedBytes(target, Encoding.UTF8.GetBytes(message));
}
public static byte[] ExtractBytes <T>(this ISteganographer <T> steganographer, T target) where T : class
{
using var outputStream = steganographer.ExtractStream(target);
return(outputStream.ToArray());
}
public static void EmbedBytes <T>(this ISteganographer <T> steganographer, T target, byte[] data) where T : class
{
using var dataStream = new MemoryStream(data);
steganographer.EmbedStream(target, dataStream);
}
public static void ExtractToStream <T>(this ISteganographer <T> steganographer, T target, Stream outputStream) where T : class
{
var bitWriter = new BitWriter(outputStream);
steganographer.Extract(target, bitWriter);
}
public ImageRgba32SteganographerBuilderTests(ITestOutputHelper output)
{
_output = output;
_sut = ImageRgba32SteganographerBuilder.Default;
}
public CompositeSteganographer(ISteganographer <T> itemSteganographer)
{
_itemSteganographer = itemSteganographer;
}
public SteganographerConverter(
ISteganographer <TOutput> innerSteganographer)
{
_innerSteganographer = innerSteganographer;
}
