static void Main(string[] args)
{
EncodedStream stream = new EncodedStream(File.ReadAllBytes(@"D:\GOG Games\Rayman 2\Data\World\Levels\Learn_30\Learn_30.sna"));
var r = new BinaryReader(stream);
stream.Seek(4, SeekOrigin.Current); // SNA's magic number is not encoded
stream.SeekWithUpdatedMagic(-4 + 0x5a242 - 0x46); // Move to portal stone structure start
// Texture entry
int something1 = r.ReadInt32();
int something2 = r.ReadInt32();
int something3 = r.ReadInt32();
int something4 = r.ReadInt32();
int something5 = r.ReadInt32();
int something6 = r.ReadInt32();
short something7 = r.ReadInt16();
short something8 = r.ReadInt16();
short texture_width = r.ReadInt16(); // Not sure
short texture_height = r.ReadInt16(); // Not sure
int something11 = r.ReadInt32();
int something12 = r.ReadInt32();
int something13 = r.ReadInt32();
int something14 = r.ReadInt32();
var something15 = r.ReadBytes(21);
byte something16 = r.ReadByte();
string texture_name = r.ReadNullTermStringWithLength(130);
Console.WriteLine("something1: " + something1);
Console.WriteLine("something2: " + something2);
Console.WriteLine("something3: " + something3);
Console.WriteLine("something4: " + something4);
Console.WriteLine("something5: " + something5);
Console.WriteLine("something6: " + something6);
Console.WriteLine("something7: " + something7);
Console.WriteLine("something8: " + something8);
Console.WriteLine("texture_width: " + texture_width);
Console.WriteLine("texture_height: " + texture_height);
Console.WriteLine("something11: " + something11);
Console.WriteLine("something12: " + something12);
Console.WriteLine("something13: " + something13);
Console.WriteLine("something14: " + something14);
Console.WriteLine("something15: " + something15);
Console.WriteLine("something16: " + something16);
Console.WriteLine("texture_name: " + texture_name);
Console.ReadLine();
}
private void OpenButton_Click(object sender, RoutedEventArgs e)
{
var dialog = new OpenFileDialog();
if (dialog.ShowDialog() == true)
{
try
{
Stream?.Close();
if (dialog.FileName.EndsWith("fasta"))
{
Stream = EncodedStream.Open(dialog.FileName, FileMode.Open);
}
else
{
Stream = File.OpenRead(dialog.FileName);
}
}
catch (Exception ex)
{
MessageBox.Show($"Не удалось открыть данный файл: {ex.Message}", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
filePath.Text = FilePath = dialog.FileName;
fileSize.Content = "Размер: " + (Stream.Length > 1024
? Stream.Length / 1024 + " кб."
: Stream.Length + " б.");
var wordLength = (Stream as EncodedStream)?.Coder.WordLength ?? 0;
formatType.Content = "Формат: " + (wordLength == 4
? "4 CC"
: wordLength > 0
? "3 CC"
: "не законидированный");
codeWordLength.Content = "Длина кодового слова: " + wordLength;
noCoder.IsChecked = wordLength == 0;
coder3Button.IsChecked = wordLength == 3;
coder4Button.IsChecked = wordLength != 3;
saveButton.IsEnabled = true;
}
}
private void decodeButton_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK && File.Exists(openFileDialog1.FileName))
{
saveFileDialog1.FileName = new FileInfo(openFileDialog1.FileName).Name + ".decoded";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
var stream = new EncodedStream(File.ReadAllBytes(openFileDialog1.FileName));
stream.Seek(4, SeekOrigin.Current);
byte[] buff = new byte[stream.Length];
buff[0] = 0x79;
buff[1] = 0xCC;
buff[2] = 0xB5;
buff[3] = 0x6A;
stream.Read(buff, 4, (int)stream.Length - 4);
File.WriteAllBytes(saveFileDialog1.FileName, buff);
stream.Close();
MessageBox.Show("File decoded!");
}
}
}
public void TestEncodedStream()
{
byte[] bytes = new byte[512];
for (int i = 0; i < bytes.Length; i++)
{
bytes[i] = (byte)(i < 256 ? i : 511 - i);
}
MemoryStream ms = new MemoryStream();
using (EncodedStream stream = new EncodedStream(ms, new Base64Encoding(), false)) stream.Write(bytes, 0, bytes.Length);
Assert.AreEqual((bytes.Length + 2) / 3 * 4, ms.Length);
Assert.AreEqual(Convert.ToBase64String(bytes), SimpleEightBitEncoding.Instance.GetString(ms.ToArray()));
ms.Position = 0;
using (EncodedStream stream = new EncodedStream(ms, new Base64Encoding(), false))
{
byte[] bytesRead = new byte[bytes.Length];
Assert.AreEqual(bytesRead.Length, stream.Read(bytesRead, 0, bytesRead.Length));
Assert.AreEqual(-1, stream.ReadByte());
TestHelpers.AssertArrayEquals(bytes, bytesRead);
}
}
