public FieldInvoke GetOffsetWork()
{
return(new FieldInvoke(
(Stream, FromReader, Struct) => {
XBXHeader Header = Struct;
uint Count = (Header.EntryLen * Header.EntriesCount);
if (FromReader)
{
StructReader Reader = new StructReader(Stream);
Header.Offsets = new uint[Count];
for (uint i = 0; i < Count; i++)
{
Header.Offsets[i] = Reader.ReadRawType(Const.UINT32);
}
Header.IsString = new bool[Header.EntryLen];
for (uint i = 0; i < Header.EntryLen; i++)
{
Header.IsString[i] = IsString(Stream, Header.Offsets[i] + Header.StrPos);
}
}
else
{
for (uint i = 0, x = 0; i < Header.Offsets.Length; i++)
{
if (!Header.IsString[i % Header.EntryLen])
{
continue;
}
Header.Offsets[i] = x;
x += (uint)Encoding.GetByteCount(Header.Strings[i]) + 1;
}
StructWriter Writer = new StructWriter(Stream);
for (uint i = 0; i < Count; i++)
{
Writer.WriteRawType(Const.UINT32, Header.Offsets[i]);
}
}
return Header;
}));
}
public void Encode(Bitmap Texture, Stream Output, bool CloseStreams = true)
{
StructWriter Writer = new StructWriter(Output, (bool)IsBigEnddian);
Writer.Write(0x2065727574786554);
if (SteamVersion.Value)
{
Writer.Write(0x20202020);
Writer.Write(0); //0xC, section length
Writer.WriteRawType(Const.UINT64, SteamUnk);
Writer.Write(0); //0x18, pnglen
Writer.WriteRawType(Const.UINT16, (ushort)TexSize.Width);
Writer.WriteRawType(Const.UINT16, (ushort)TexSize.Height);
}
else
{
Writer.Write(0); //0x8, blocklen
Writer.WriteRawType(Const.UINT32, Flags);
Writer.Write(0); //0x10, pnglen
Writer.WriteRawType(Const.UINT32, (uint)TexSize.Width);
Writer.WriteRawType(Const.UINT32, (uint)TexSize.Height);
}
if (Tiled)
{
Texture = Retile(Texture);
}
uint SectionLength;
if (SteamVersion.Value)
{
byte[] Buffer = new byte[Texture.Width * Texture.Height * 4];
fixed(void *pBuff = &Buffer[0])
{
int Stride = Texture.Width;
uint *pPixel = (uint *)pBuff;
unchecked
{
for (int i = 0; i < Buffer.Length / 4; i++)
{
int X = i % Stride;
int Y = i / Stride;
uint ARGB = (uint)Texture.GetPixel(X, Y).ToArgb();
//ARGB => ABGR
*pPixel++ = (ARGB & 0xFF00FF00) | ((ARGB & 0x00FF0000) >> 8 * 2) | ((ARGB & 0x000000FF) << 8 * 2);
}
}
}
if (Compressed)
{
Buffer = LZSSCompress(Buffer);
}
Writer.Write(Buffer);
SectionLength = (uint)Writer.BaseStream.Position;
uint TexLen = SectionLength - 0x20;
Writer.Seek(0xC, 0);
Writer.WriteRawType(Const.UINT32, SectionLength);
Writer.Seek(0x18, 0);
Writer.WriteRawType(Const.UINT32, TexLen);
}
else
{
Texture.Save(Writer.BaseStream, ImageFormat.Png);
SectionLength = (uint)Writer.BaseStream.Position;
uint PngLen = SectionLength - 0x1C;
Writer.Seek(0x8, 0);
Writer.WriteRawType(Const.UINT32, SectionLength);
Writer.Seek(0x10, 0);
Writer.WriteRawType(Const.UINT32, PngLen);
}
Writer.Seek(SectionLength, 0);
while (Writer.BaseStream.Position % (SteamVersion.Value ? 8 : 4) != 0)
{
Writer.Write((byte)0x0);
}
StructReader Reader = new StructReader(this.Texture, (bool)IsBigEnddian);
Reader.Seek(SteamVersion.Value ? 0x0C : 0x08, 0);
Reader.Seek(Reader.ReadRawType(Const.UINT32), 0);
while (Reader.BaseStream.Position % (SteamVersion.Value ? 8 : 4) != 0)
{
Reader.ReadByte();
}
Reader.BaseStream.CopyTo(Writer.BaseStream);
Writer.Flush();
if (CloseStreams)
{
Writer.Close();
Output?.Close();
}
}
