Add CHD file support

[siddhartha77]

Okay, here are all my changes. You should be able to merge it easily and update PCSX2#4045 to finally close PCSX2#2584. It will compile on Ubuntu 20.04 and MSVC 2019 Community. Most of the changes were with the directory structure, CMAKE files, and the MSVC files. I also added large file support for >2GB CHDs.

One thing we should eventually do is update it to use xz instead of lzma, but that will take a ton of work.

Thanks for all your hard work too!

[siddhartha77]

It would be prudent to check out this PR and the resulting issues with large file support across platforms.

[0x90shell]

@siddhartha77 Looks like libchdr maintainer wants you to make some edits to merge the changes upstream to libretro

[BakedCrossiant]

@siddhartha77 any updates?

[rtissera]

libchdr rtissera/libchdr#42 by @SleepyMan was finally merged.

[tempt187]

Any chance on this getting merged soon? There are a lot of files greater than 2GB in CHD format left to support.

[rtissera]

I don't get it.
CHD support was merged in PCSX2 upstream check PCSX2#4314

[tempt187]

I don't get it.
CHD support was merged in PCSX2 upstream check PCSX2#4314

It does work, but it appears this request will fix the > 2GB CHD? I'm getting the following errors on boot for any CHD compressed PS2 game greater than 2GB. Every CHD < 2GB works fine though.

isoFile error: Block index is past the end of file! (1502786 >= 1121296).
isoFile error: Block index is past the end of file! (1502787 >= 1121296)

and either the emulator crashes or the game never starts

[Dio141]

I don't get it.
CHD support was merged in PCSX2 upstream check PCSX2#4314

It does work, but it appears this request will fix the > 2GB CHD? I'm getting the following errors on boot for any CHD compressed PS2 game greater than 2GB. Every CHD < 2GB works fine though.

isoFile error: Block index is past the end of file! (1502786 >= 1121296).
isoFile error: Block index is past the end of file! (1502787 >= 1121296)

and either the emulator crashes or the game never starts

i just tried a 2.5gb CHD, and it booted just fine here.

[siddhartha77]

I don't get it.
CHD support was merged in PCSX2 upstream check PCSX2#4314

It does work, but it appears this request will fix the > 2GB CHD? I'm getting the following errors on boot for any CHD compressed PS2 game greater than 2GB. Every CHD < 2GB works fine though.

isoFile error: Block index is past the end of file! (1502786 >= 1121296).
isoFile error: Block index is past the end of file! (1502787 >= 1121296)

and either the emulator crashes or the game never starts

Sorry, I've been offline for so long. Life.

Can I confirm your operating system and which version of PCSX2 you are compiling?

[siddhartha77]

I have just tried the latest nightly Windows build and compiled the latest Linux version (the same @ 2901830) on Ubuntu 20.04. Both were able to boot into a God of War CHD that is over 6.8 GB.

Thanks to everyone, especially @rtissera for all their hard work.