internal bool Initialize(bool readHeader)
{
if (_id != null)
{
return(_headerRead);
}
List <long> IsoDecParts = new List <long>();
_headerRead = readHeader;
try
{
if (readHeader)
{
_currentBlockIndex = -1;
_id = read(4);
string id = Encoding.ASCII.GetString(_id);
if (id == "WBFS")
{
uint hdSecSize = this.readUInt32B(); //n_hd_sec
long pos = (uint)(1 << this.read8()) + 0x100;
_clusterSize = 1 << this.read8();
int clusters = (int)(FullSizeWii5 / _clusterSize) * 2;
//if ((hdSecSize * _clusterSize) / 0x1000L != _stream.Length) //WBFS header check
// Debug.WriteLine("MatchFail");
_stream.Copy(ByteStream.Zeros, pos - 10);
MemorySection ms = MemorySection.Read(_stream, 2 * clusters);
uint pointer;
long maxPointer = 0;
long blank = 0;
long blankTmp = 0;
long fileSize = _stream.Length;
for (int i = 0; i < clusters; i++)
{
if ((pointer = ms.ReadUInt16B(i * 2)) != 0)
{
_imageSize += _clusterSize;
}
if (pointer == 0)
{
blankTmp++;
}
else if (pointer * (long)_clusterSize < fileSize)
{
blank += blankTmp;
blankTmp = 0;
maxPointer = Math.Max(maxPointer, pointer * (long)_clusterSize);
}
_clusterTable.Add(pointer);
}
_streamDataStart = _stream.Position;
_imageSize = _readLength = lenCalc(Math.Max(maxPointer + (blank * _clusterSize), _imageSize));
_isWbfs = _isWii = true; //must set after above code has ran
setDiscHeader(false, null);
}
else if ((id == "WII5" || id == "WII9") && !_isGamecube) //IsoDec :(
{
int sectorSize = id == "WII5" ? 0x1182800 : 0x1FB5000;
string discId = this.readString(4);
byte[] md5 = this.read(16);
int partitions = (int)this.readUInt32L();
for (int i = 0; i < partitions; i++)
{
var part = new //throw away
{
DataOffset = (long)((ulong)this.readUInt32L() << 2),
DataSize = (long)((ulong)this.readUInt32L() << 2),
PartitionOffset = (long)((ulong)this.readUInt32L() << 2),
PartitionEndOffset = (long)((ulong)this.readUInt32L() << 2),
PartitionKey = this.read(16)
};
IsoDecParts.Add(part.PartitionOffset);
}
;
_clusterSize = 0x400; //1k
_clusterTable = new List <uint>();
int c = (sectorSize - (28 + (partitions * 32))) / 4;
MemorySection ms = MemorySection.Read(_stream, 4 * c);
for (int i = 0; i < c; i++)
{
_clusterTable.Add(ms.ReadUInt32L(i * 4));
}
_imageSize = _readLength = (id == "WII5" ? FullSizeWii5 : FullSizeWii9);
_isIsoDec = _isWii = true;
_streamDataStart = _stream.Position;
setDiscHeader(false, IsoDecParts.ToArray());
}
else if (id == "GCML") //GC IsoDec
{
string discId = this.readString(4);
byte[] md5 = this.read(16);
_clusterTable = new List <uint>();
_clusterSize = 0x800; //2k
int c = (0x2B8800 - 24) / 4;
MemorySection ms = MemorySection.Read(_stream, 4 * c);
for (int i = 0; i < c; i++)
{
_clusterTable.Add(ms.ReadUInt32L(i * 4));
}
_streamDataStart = _stream.Position;
_IsoDecMultiply = 0x1L; //none
_imageSize = _readLength = FullSizeGameCube;
_isIsoDec = _isGamecube = true;
setDiscHeader(false, null);
}
else if (BitConverter.ToString(_id) == "01-C0-0B-B1") //GCZ - C001B10B as big endian
{
MemorySection ms = MemorySection.Read(_stream, 0x20 - 4);
long compSize = (long)ms.ReadUInt64L(0x8 - 4);
_imageSize = _readLength = (long)ms.ReadUInt64L(0x10 - 4);
_clusterSize = (int)ms.ReadUInt32L(0x18 - 4);
uint blocks = ms.ReadUInt32L(0x1C - 4);
_currentBlock = new byte[_clusterSize];
MemorySection pnt = MemorySection.Read(_stream, blocks * 8);
MemorySection hsh = MemorySection.Read(_stream, blocks * 4);
ulong dataOffset = (ulong)(pnt.Size + hsh.Size + 0x20);
_clusterTable = new List <uint>();
_clusterTableCompressed = new List <uint>();
for (int i = 0; i < blocks; i++)
{
ulong offset = pnt.ReadUInt64L(i * 8) + dataOffset; //offset in raw file
bool compressed = (offset & 0x8000000000000000) == 0;
offset &= ~0x8000000000000000;
_clusterTable.Add((uint)offset); //divide by 4 for wii
_clusterTableCompressed.Add((uint)(compressed ? 1 : 0));
}
_isGcz = true;
MemorySection xx = MemorySection.Read(this, 4);
_id = xx.Read(0, 4);
setDiscHeader(true, null);
}
else
{
_streamDataStart = 0;
_isIso = true;
_imageSize = _readLength = _stream.Length;
setDiscHeader(true, null); //true sets length too
_clusterSize = _isWii ? 0x400 : 0x800;
}
this.ResetJunk();
return(true);
}
else
{
_imageSize = _readLength = _stream.Length; //partial streams not disc
this.Position = 0;
_streamDataStart = 0;
}
return(false);
}
catch (Exception ex)
{
throw new HandledException(ex, "NStream.Initialize - Read Header");
}
}
