public byte[] DecompressChunk(Stream fs, int offset, int rev)
{
//CPK_MAX_DECOMP_BUFFER_SIZE = 0x10000
helper help = new helper();
fs.Seek(offset, 0);
uint DecompressedSize, Flag, CompressedSize;
if (rev == 0)
{
DecompressedSize = help.ReadU16(fs);
Flag = help.ReadU16(fs);
CompressedSize = help.ReadU16(fs);
}
else
{
DecompressedSize = help.ReverseUInt16(help.ReadU16(fs));
Flag = help.ReverseUInt16(help.ReadU16(fs));
CompressedSize = help.ReverseUInt16(help.ReadU16(fs));
}
byte[] buff = new byte[CompressedSize];
fs.Read(buff, 0, (int)CompressedSize);
byte[] tmp = { };
try
{
tmp = DecompressZlib(buff);
}
catch
{
tmp = buff;
}
return(tmp);
}
public static Dictionary <uint, CompressedSectorChunk> ReadSectors(Stream s)
{
helper help = new helper();
CompressedSectorChunk csc = new CompressedSectorChunk();
uint ChunkNumber = 0;
ulong doffset = 0;
s.Seek(Header.FirstSectorPosition, 0);
Dictionary <uint, CompressedSectorChunk> result = new Dictionary <uint, CompressedSectorChunk>();
if (Header.MagicNumber.ToString("X8").Equals("A1B2C3D4"))
{
help.ReadU16(s); help.ReadU16(s); s.Seek(help.ReadU16(s), SeekOrigin.Current);
}
if (Header.MagicNumber.ToString("X8").Equals("D4C3B2A1"))
{
help.ReverseUInt16(help.ReadU16(s)); help.ReverseUInt16(help.ReadU16(s)); s.Seek(help.ReverseUInt16(help.ReadU16(s)), SeekOrigin.Current);
}
for (uint sector = 0; sector <= Header.CompSectorCount; sector++)
{
uint SectorStartPosition = Header.FirstSectorPosition + sector * Header.CompSectorSize;
uint NextSectorPosition = SectorStartPosition + Header.CompSectorSize;
s.Seek(SectorStartPosition, 0);
while (s.Position + 0xf < NextSectorPosition)
{
csc = new CompressedSectorChunk();
csc.position = (uint)s.Position;
ushort Size = help.ReadU16(s);
ushort flag = help.ReadU16(s);
ushort CompChunkSize = help.ReadU16(s);
csc.nr = ChunkNumber;
csc.CompChunkSize = CompChunkSize;
csc.DecompChunkSize = Size;
csc.flag = flag;
csc.CompSector = sector;
doffset += Size;
csc.StartDecompOffset = doffset - Size;
result.Add(ChunkNumber, csc);
ChunkNumber++;
s.Seek(CompChunkSize, SeekOrigin.Current);
}
}
return(result);
}
