/// <summary>
/// Compress an array of bytes that represent the gray scale thumbnail
/// </summary>
/// <param name="inputGrayScaleThumb"></param>
/// <returns></returns>
public static byte[] CompressedGrayScaleThumb(byte[] inputGrayScaleThumb)
{
using (var outputStream = new MemoryStream())
using (var arithmeticStream = new ArithmeticStream(outputStream, CompressionMode.Compress, true))
{
arithmeticStream.Write(inputGrayScaleThumb, 0, inputGrayScaleThumb.Length);
arithmeticStream.Flush();
arithmeticStream.Close();
return(outputStream.ToArray());
}
}
/// <summary>
/// Decompress an array of bytes that represent the gray scale thumbnail
/// </summary>
/// <param name="compressedGrayScaleThumb"></param>
/// <returns></returns>
public static byte[] DecompressGrayScaleThumb(byte[] compressedGrayScaleThumb)
{
using (var inputStream = new MemoryStream(compressedGrayScaleThumb))
using (var arithmeticStream = new ArithmeticStream(inputStream, CompressionMode.Decompress, true))
using (var outputStream = new MemoryStream())
{
arithmeticStream.CopyTo(outputStream);
arithmeticStream.Flush();
outputStream.Flush();
outputStream.Close();
return(outputStream.ToArray());
}
}
public void Verify27K()
{
byte[] data = Encoding.UTF8.GetBytes(TestResources.RFC5_Text);
var stream = new MemoryStream();
var encoder = new ArithmeticStream(stream, CompressionMode.Compress, true);
encoder.Write(data, 0, data.Length);
encoder.Flush();
stream.Position = 0;
var decoder = new ArithmeticStream(stream, CompressionMode.Decompress, true);
var decoded = new byte[data.Length];
decoder.Read(decoded, 0, decoded.Length);
CollectionAssert.AreEqual(data, decoded);
Assert.AreEqual(16236, stream.Length);
}
public void Verify27K()
{
byte[] data = Encoding.UTF8.GetBytes(TestResources.RFC5_Text);
var stream = new MemoryStream();
var encoder = new ArithmeticStream(stream, CompressionMode.Compress, true);
encoder.Write(data, 0, data.Length);
encoder.Flush();
stream.Position = 0;
var decoder = new ArithmeticStream(stream, CompressionMode.Decompress, true);
var decoded = new byte[data.Length];
decoder.Read(decoded, 0, decoded.Length);
CollectionAssert.AreEqual(data, decoded);
Assert.AreEqual(16236, stream.Length);
}