public static ISOPartitionDetails GetPartitionDetails(byte[] ss, byte[] pfi, Format ISOType, int VideoSize)
{
Trace.WriteLine("Getting partition Details from ISO");
ISOPartitionDetails details = new ISOPartitionDetails();
SCSIDevice.DiscData data = new SCSIDevice.DiscData(ss, 0);
SCSIDevice.DiscData data2 = new SCSIDevice.DiscData(pfi, 0);
details.VideoPartitionSize = data.StartSectorNumber - data2.StartSectorNumber;
Trace.WriteLine("Video partition size: " + details.VideoPartitionSize.ToString());
details.GamePartitionSize = data.Layer0LastSectorLBA * 2;
Trace.WriteLine("Game partition size: " + details.GamePartitionSize.ToString());
details.LayerBreak = data.Layer0LastSectorLBA + details.VideoPartitionSize;
Trace.WriteLine("Layerbreak: " + details.LayerBreak.ToString());
Trace.WriteLine("Video Layer 0 size: " + details.VideoLayer0Size.ToString());
details.VideoFileSize = (uint)VideoSize;
Trace.WriteLine("Video is size: " + VideoSize);
if ((details.VideoFileSize <= 0) || (details.VideoFileSize > 0x16e360))
{
if (ISOType == Format.Xbox360)
{
details.VideoFileSize = 0xdbf;
details.VideoLayer1Size = 0x32f;
}
else
{
details.VideoFileSize = 0x1b50;
details.VideoLayer1Size = 0xa1;
}
}
else
{
details.VideoLayer1Size = details.VideoFileSize - data2.Layer0LastSectorLBA;
}
details.VideoLayer0Size = data2.Layer0LastSectorLBA;
details.VideoPadding = details.VideoPartitionSize - details.VideoLayer0Size;
details.TotalSplitVidISOSize = ((details.VideoPartitionSize + details.GamePartitionSize) + details.VideoPadding) + details.VideoLayer1Size;
details.TotalISOSize = details.VideoPartitionSize + details.GamePartitionSize;
return(details);
}
public long FindFSOffset()
{
Trace.WriteLine("Searching for filesystem offset");
bool flag = false;
ISOPartitionDetails details = new ISOPartitionDetails();
if (this.InputFileSize > 0xfd90000L)
{
Trace.WriteLine("Attempting to load XBOX 360 PFI file details");
this.InStream.Seek(0xfd8e800L, SeekOrigin.Begin);
byte[] buffer = new byte[0x800];
byte[] buffer2 = new byte[0x800];
this.InStream.Read(buffer2, 0, 0x800);
this.InStream.Seek(0x800L, SeekOrigin.Current);
this.InStream.Read(buffer, 0, 0x800);
Trace.WriteLine("Checking PFI details...");
if (FileSystemSource.SimpleCheckSS(buffer) && FileSystemSource.CheckPFI(buffer2))
{
Trace.WriteLine("SS and PFI are both trivially correct");
Stream vs = new ISOFileStreamer(0L, 0xfd8e800L, new BinaryReader(this.InStream));
details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox360, FileSystemSource.GetVideoSize(vs));
vs.Close();
Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
flag = true;
}
else
{
Trace.WriteLine("PFI or SS is invalid or not present, will use default value");
}
long num = 0xfd90000L;
if (flag)
{
num = details.VideoPartitionSize * 0x800L;
}
Trace.WriteLine("Now checking FS Magic");
if (this.InputFileSize > ((num + 0x10000L) + 20L))
{
this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
byte[] buffer3 = new byte[20];
this.InStream.Read(buffer3, 0, 20);
if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
{
Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
return(num);
}
Trace.WriteLine("XBOX360 Partition loading failed, trying XBOX 1 partition");
if (this.InputFileSize > 0x18300000L)
{
this.InStream.Seek(0x182fe800L, SeekOrigin.Begin);
buffer = new byte[0x800];
buffer2 = new byte[0x800];
this.InStream.Read(buffer2, 0, 0x800);
this.InStream.Seek(0x800L, SeekOrigin.Current);
this.InStream.Read(buffer, 0, 0x800);
Trace.WriteLine("Attempting to read details from Xbox 1 pfi + ss");
if (FileSystemSource.CheckXbox1SS(buffer) && FileSystemSource.CheckPFI(buffer2))
{
Trace.WriteLine("SS and PFI loaded successfully");
Stream stream2 = new ISOFileStreamer(0L, 0x182fe800L, new BinaryReader(this.InStream));
details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox1, FileSystemSource.GetVideoSize(stream2));
stream2.Close();
Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
flag = true;
}
else
{
Trace.WriteLine("PFI or SS are invalid or not present, trying default xbox 1 offset");
flag = false;
}
num = 0x18300000L;
if (flag)
{
num = details.VideoPartitionSize * 0x800L;
}
if (this.InputFileSize > ((num + 0x10000L) + 20L))
{
this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
this.InStream.Read(buffer3, 0, 20);
if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
{
Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
return(num);
}
}
}
}
}
else
{
Trace.WriteLine("File is too short to contain a video partition (" + this.InputFileSize.ToString() + ")");
}
Trace.WriteLine("FS offset not found, using byte 0");
return(0L);
}