private static bool Extract(Stream input, Stream output)
{
var reader = new BinaryReader(input);
var writer = new BinaryWriter(output);
var header = new FileHeader();
header.ReadFrom(reader);
if (!header.IsValid)
{
return(false);
}
if (header.DecodedAllSize != input.Length)
{
return(false);
}
header.WriteTo(writer);
#if false
Lzss.Extract(input, output);
#else
var body = new byte[header.DecodedAllSize - header.Size];
input.Read(body, 0, body.Length);
output.Write(body, 0, body.Length);
#endif
output.Flush();
output.SetLength(output.Position);
return(output.Position == header.DecodedAllSize);
}
protected override void ConvertBestShot(Stream input, Stream output)
{
using (var decoded = new MemoryStream())
{
var outputFile = output as FileStream;
var reader = new BinaryReader(input);
var header = new BestShotHeader();
header.ReadFrom(reader);
var key = new LevelScenePair(header.Level, header.Scene);
if (this.bestshots == null)
{
this.bestshots = new Dictionary <LevelScenePair, BestShotPair>(SpellCards.Count);
}
if (!this.bestshots.ContainsKey(key))
{
this.bestshots.Add(key, new BestShotPair(outputFile.Name, header));
}
Lzss.Extract(input, decoded);
decoded.Seek(0, SeekOrigin.Begin);
using (var bitmap = new Bitmap(header.Width, header.Height, PixelFormat.Format24bppRgb))
{
try
{
var permission = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode);
permission.Demand();
var bitmapData = bitmap.LockBits(
new Rectangle(0, 0, header.Width, header.Height),
ImageLockMode.WriteOnly,
bitmap.PixelFormat);
var source = decoded.ToArray();
var sourceStride = 3 * header.Width; // "3" means 24bpp.
var destination = bitmapData.Scan0;
for (var sourceIndex = 0; sourceIndex < source.Length; sourceIndex += sourceStride)
{
Marshal.Copy(source, sourceIndex, destination, sourceStride);
destination = destination + bitmapData.Stride;
}
bitmap.UnlockBits(bitmapData);
}
catch (SecurityException e)
{
Console.WriteLine(e.ToString());
}
bitmap.Save(output, ImageFormat.Png);
output.Flush();
output.SetLength(output.Position);
}
}
}
private static bool Extract(Stream input, Stream output)
{
var reader = new BinaryReader(input);
var writer = new BinaryWriter(output);
var header = new Header();
header.ReadFrom(reader);
header.WriteTo(writer);
var bodyBeginPos = output.Position;
Lzss.Extract(input, output);
output.Flush();
output.SetLength(output.Position);
return(header.DecodedBodySize == (output.Position - bodyBeginPos));
}
private static bool Extract(Stream input, Stream output)
{
var reader = new BinaryReader(input);
var writer = new BinaryWriter(output);
var header = new FileHeader();
header.ReadFrom(reader);
if (!header.IsValid)
{
return(false);
}
if (header.Size + header.EncodedBodySize != input.Length)
{
return(false);
}
header.WriteTo(writer);
Lzss.Extract(input, output);
output.Flush();
output.SetLength(output.Position);
return(output.Position == header.DecodedAllSize);
}
