Hacking wit tools for Wii U — suggestions

[Wiimm]

I think about an extension (or a new branch) of my wit tools. They shall support different Wii U formats. And now I need an overview about file and archive formats.

Wii Example for understanding:
The DVD image archive formats is supported, and also certificates and DOL.
Different file formats (the outer container) are supported: ISO, WBFS, WDF,WIA, GCX, ..., extracted files.

And here I will collect and discuss suggestions.


EDIT:
Same topic in german: https://forum.wii-homebrew.com/inde...-Wii-U-—-Anregungen/?postID=680984#post680984

 

[shinyquagsire23]

Off the top of my head there's mostly WUD and CDN/installable contents which are largely the same, just an FST and either parts of the disk image (WUD) or .apps (CDN) for contents.

EDIT: https://github.com/shinyquagsire23/makefst/blob/master/fst.h might help a bit, both disks and installable contents use the same header, but disks have a sector offset or similar iirc, while CDN installable contents just specify the .app and maybe an offset inside of that for each file. I think WUD might have additional headers to describe the disk and where the FST is at.

 

[Cyan]

there's also the wux format, which compressed the dummy sectors of a wud. as they are repetitive it compress pretty well, and is a lossless compression.

you could check JNUStool, wud2app and JWUDTool for ideas.