Added support for SNES SP2/SPC2 format

[gnaghi]

The SP2/SPC2 file format has been created by Kevin Horton to avoid using rar for compression. For example, uncompressed Final Fantasy 6 musics are 5.4MB in SPC format, and 1.4 in SP2.
It is used on Analogue Super NT.

Specifications

[Wohlstand]

Hello!
Looks an interesting thing, but could you share some sample files to let me verify the work of the thing?

[gnaghi]

Oh, yes, you’re right :)
There are 2 examples here : https://filebin.net/4at79fsp8bwjuijw
You can see the history of the format here : https://forums.nesdev.org/viewtopic.php?t=8558
Caitsith2 made a compressor, but I’m currently rewriting it for Linux.

[Wohlstand]

Oh, yes, you’re right :) There are 2 examples here : https://filebin.net/4at79fsp8bwjuijw You can see the history of the format here : https://forums.nesdev.org/viewtopic.php?t=8558 Caitsith2 made a compressor, but I’m cussently rewriting it for Linux.

Thanks! I'll test once I finish some other works. And ye, about compressor, my main system is Linux distro, and I could try some on my end just to confirm that it works or some bugs was found. I do also have macOS thing too, so, I could check the work of the thing here too. Just, if just use plain POSIX or typical UNIX-like API, it's almost same on macOS and Linux, and even on xBSD. But on Windows the biggest pain is encoding of file system: while everywhere is just UTF-8, on Windows is ANSI or UTF-16. And so, I typically wrap all file system calls into UTF-8 frontend to keep everything work same as on UNIX-like systems and Windows too.

[gnaghi]

The packer is here.

[Wohlstand]

Cool, I'll test it around with files that I do have already, and I guess I'll pick it up for some my own needs if everything goes success. But for now I'll go away from home for a short work.

[gnaghi]

Hello, were you able to test it ?

[Wohlstand]

Hello! Right now I am at my workplace, and I am busy for my main work. I could make a try at the evening or tomorrow, for the worst case I will need to try at days off.