private XnbStreamReader DecodeXnbStreamReader(XnbStreamReader endcodedXnbStreamReader, XnbFlags flags, int size)
{
// check if file size is equal to stream size
if (endcodedXnbStreamReader.BaseStream.Length != size)
{
throw new XnbException("XNB file has been truncated!");
}
// check if stream is compressed
if (!flags.HasFlag(XnbFlags.ContentCompressedLzx))
{
return(endcodedXnbStreamReader);
}
var decompressedSize = (int)endcodedXnbStreamReader.ReadUInt32();
var compressedSize = size - XnbCompressedPrologueSize;
var decompressedStream = new LzxDecoderStream(endcodedXnbStreamReader.BaseStream, decompressedSize, compressedSize);
return(new XnbStreamReader(decompressedStream));
}
public byte[] Serialize <T>(T value,
XnbTargetOs xnbTargetOs = XnbTargetOs.MicrosoftWindow,
byte formatVersion = 5,
XnbFlags flags = 0
)
{
var xnbStreamWriter = new XnbStreamWriter(new MemoryStream());
// write XNB default header
xnbStreamWriter.Write('X');
xnbStreamWriter.Write('N');
xnbStreamWriter.Write('B');
// write XNB target OS
xnbStreamWriter.Write((byte)xnbTargetOs);
// write XNB format version
xnbStreamWriter.Write(formatVersion);
// write XNB flags
// remove compression flag
flags = flags & ~XnbFlags.ContentCompressedLzx;
xnbStreamWriter.Write((byte)flags);
//tmp file size
long sizeIndex = xnbStreamWriter.BaseStream.Position;
xnbStreamWriter.Write(0);
//TODO: encoding here
Type readerType = XnbTypeReaderTypeResolver.ResolveFromTargetType <T>();
XnbTypeReader reader = XnbReaderFactory.CreateReaderFromType(readerType);
var xnbReaderManager = new XnbReaderManager(reader);
var tmpStream = new XnbStreamWriter(new MemoryStream());
reader.Write(xnbReaderManager, tmpStream, value);
List <XnbTypeReader> xnbTypeReaders = xnbReaderManager.XnbTypeReaders;
// write reader count
xnbStreamWriter.Write7BitEncodedInt(xnbTypeReaders.Count);
// write readers and version
foreach (XnbTypeReader xnbTypeReader in xnbTypeReaders)
{
xnbStreamWriter.Write(xnbTypeReader.Name);
xnbStreamWriter.Write(xnbTypeReader.Version);
}
// no shared resources
xnbStreamWriter.Write7BitEncodedInt(0);
// write initial reader index
xnbStreamWriter.Write7BitEncodedInt(1);
tmpStream.BaseStream.Position = 0;
tmpStream.BaseStream.CopyTo(xnbStreamWriter.BaseStream);
xnbStreamWriter.BaseStream.Position = sizeIndex;
xnbStreamWriter.Write((int)xnbStreamWriter.BaseStream.Length);
using (var ms = new MemoryStream())
{
xnbStreamWriter.BaseStream.Position = 0;
xnbStreamWriter.BaseStream.CopyTo(ms);
return(ms.ToArray());
}
}
