public static FCXCompressedData Pack(BinaryStream stream)
{
var compressedData = new FCXCompressedData();
using (var bs = new BinaryStream(1024))
{
uint virtualOffset = 0;
uint realOffset = 4;
while (stream.Position < stream.Length)
{
var length = (int)Math.Min(0x40000, (stream.Length - stream.Position));
using (var block = new BinaryStream(16))
{
var zlib = new DeflaterOutputStream(block);
var buffer = stream.ReadBytes(length);
zlib.Write(buffer, 0, length);
zlib.Finish();
compressedData.Blocks.Add(new Block()
{
VirtualOffset = virtualOffset,
FileOffset = realOffset,
IsCompressed = true,
});
block.Position = 0;
block.CopyTo(bs);
realOffset += (uint)block.Length;
}
virtualOffset += (uint)length;
}
compressedData.Data = bs.ToArray();
compressedData.Blocks.Add(new Block()
{
VirtualOffset = virtualOffset,
FileOffset = realOffset,
IsCompressed = true,
});
}
return(compressedData);
}
public void Deserialize(BinaryStream stream)
{
var baseOffset = stream.Position;
var magic = stream.ReadInt32();
if (magic != Signature)
{
throw new FormatException();
}
Version = stream.ReadInt32();
if (Version != 1)
{
throw new FormatException();
}
uint offsetData = stream.ReadUInt32();
uint offsetHeader = stream.ReadUInt32();
uint offsetDescriptor = stream.ReadUInt32();
if (offsetData != 20)
{
throw new FormatException();
}
Data = new FCXCompressedData();
Data.Deserialize(stream);
if (baseOffset + offsetHeader != stream.Position)
{
throw new FormatException();
}
Header = new FCXCompressedData();
Header.Deserialize(stream);
if (baseOffset + offsetDescriptor != stream.Position)
{
throw new FormatException();
}
Descriptor = new FCXCompressedData();
Descriptor.Deserialize(stream);
}