OCDM stands for Online Course Database Manager​

Features*:

• import and export courses, both** 3DS and WiiU
• cryptofix saves (if the game marked your save as "corrupted")
  • Note: this will overwrite the LockoutID in your courses, not in the save file, so please be fair and don't reupload others' courses
• make/apply save snapshots (exports all files which are used in the save)
  • Note: please format your save data before restoring your save otherwise the game could mark your save as "corrupted", and this one is not cryptofixable
• browse SMMDB
  • download courses
  • discontinued

*: these features are in the latest build at the time of editing this post, so functionality in the public build could differ
**: due to differences in the 3DS and the WiiU version, importing a converted course file on a foreign platform could crash the game on loading the course

Spoiler: Video

Spoiler: Screenshots (development history)

Spoiler: Totally unrelated stuff

• Lua stuff (Pastebin)

[Download] (not supported anymore)​

 

[Sono]

Can you post me the QRcode download of the latest 3dsx version ?

no, you need to download it manually, because there's a 3dsx and an xml file, both are required

 

[Bros.Life]

Hi people. Could you guys tell me when this is gonna be ready for the final user? I mean, at least when you expect to be ready.

 

[Tarnadas]

Hi people. Could you guys tell me when this is gonna be ready for the final user? I mean, at least when you expect to be ready.

The server will be able to send 3DS format next week pretty sure, but it is still incomplete and it is just a beta server. Until it is fully functional, I will need 3-4 more weeks or so.

I don't know about @MarcusD 's plan to either wait for a full release of the server or use the beta server in his Homebrew app and as you all know, he hates httpC

 

[Pakhitew-Island]

Where exactly do the 3dsx and xml files go? In the 3ds folder or the OCDM folder after the CIA's been installed?

 

[Sono]

Where exactly do the 3dsx and xml files go? In the 3ds folder or the OCDM folder after the CIA's been installed?

3dsx and xml go into /3ds, the cia doesn't need any of these as the cia has the correct permissions already set on it

 

[Pakhitew-Island]

Oh, I thought that those were companion files to the CIA version for a second

 

[clancy94]

3dsx and xml go into /3ds, the cia doesn't need any of these as the cia has the correct permissions already set on it

Installing the beta now, does OCDM have automatic updating or will I have to do it manually?

 

[Sono]

Installing the beta now, does OCDM have automatic updating or will I have to do it manually?

DIY, I find autoupdaters cancer... if the user feels like something is missing they could go check the thread/Github repo periodically if they need updates so much

 

[clancy94]

DIY, I find autoupdaters cancer... if the user feels like something is missing they could go check the thread/Github repo periodically if they need updates so much

Its always a nice feature but I'll make sure to check in

 

[Tarnadas]

@MarcusD In your typedef struct MM_CourseFile, shouldn't the padding have a length of 0x3840 byte? You have 0xCE4*4=0x3390 byte.
I would otherwise get a wrong length for 3DS courses.

 

[Sono]

@MarcusD In your typedef struct MM_CourseFile, shouldn't the padding have a length of 0x3840 byte? You have 0xCE4*4=0x3390 byte.
I would otherwise get a wrong length for 3DS courses.

last time I checked the unit tests gave the right result, so idk what you're talking about... also, the offset comments in the file were made using the unit test too, so idk

 

[Tarnadas]

last time I checked the unit tests gave the right result, so idk what you're talking about... also, the offset comments in the file were made using the unit test too, so idk

I cannot find the unit tests, but they might give the same result, because you just check the file crc header? Since it is just a zero padding and it uses a weird crc algorithm, the crc would be the same for different file lengths.
Your files length is 0x1C (hdr) + 2 * 0x15000 (course + course sub) + 0x157C0 (thumbnails) + 0xCE4 * 4 (padding) = 0x42B6C but the 3DS files I downloaded have a length of 0x4301C

 

[Sono]

I cannot find the unit tests, but they might give the same result, because you just check the file crc header? Since it is just a zero padding and it uses a weird crc algorithm, the crc would be the same for different file lengths.
Your files length is 0x1C (hdr) + 2 * 0x15000 (course + course sub) + 0x157C0 (thumbnails) + 0xCE4 * 4 (padding) = 0x42B6C but the 3DS files I downloaded have a length of 0x4301C

oooooh that padding! I didn't unit test all the structs, and that includes this one too... derp xD

 

[Tarnadas]

oooooh that padding! I didn't unit test all the structs, and that includes this one too... derp xD

I cannot get your 3DS image conversion to work. Here is what I got:
https://github.com/Tarnadas/cemu-smm/commit/9acef252a16bc1cf08f5dd466aaf29e68c442f4b
I am missing something in the morton algorithm. Can you maybe take a look?

 

[Sono]

I cannot get your 3DS image conversion to work. Here is what I got:
https://github.com/Tarnadas/cemu-smm/commit/9acef252a16bc1cf08f5dd466aaf29e68c442f4b
I am missing something in the morton algorithm. Can you maybe take a look?

I wish I could take a look, but I have Node 7.5.0, and I get a syntax error because of that... sorry

 

[Tarnadas]

I wish I could take a look, but I have Node 7.5.0, and I get a syntax error because of that... sorry

But I use Babel to transpile, you should just use "npm test" to transpile automatically to your Node version and it should work. Anyway, I made another repo showing what I have:
https://github.com/Tarnadas/3ds-image
You should just type "npm start" to execute the script

 

[Sono]

But I use Babel to transpile, you should just use "npm test" to transpile automatically to your Node version and it should work. Anyway, I made another repo showing what I have:
https://github.com/Tarnadas/3ds-image
You should just type "npm start" to execute the script

can't you please make one that's compatible with 7.5.0? without the async and promise stuff

but anyways, it seems like your bytesize used by the morton function is either too low or too high... I see you have hardcoded it as 2, but you might need to use either 1 or 4, try both first

 

[Tarnadas]

can't you please make one that's compatible with 7.5.0? without the async and promise stuff

but anyways, it seems like your bytesize used by the morton function is either too low or too high... I see you have hardcoded it as 2, but you might need to use either 1 or 4, try both first

Ok I'll try that tomorrow. But isn't it working now for you after npm install? I hate that callback hell.

I've seen that you used 1 for bytesize but you are reading from a ushort array, which would yield to a bytesize of 2 because I'm reading bytes instead of short from buffers.

Edit: Damn it, I just executed your C# program with mine, wrote both outputs to a file comparing variables and it was the same with a bytesize of 1. The times 2 is just at the wrong place... No idea what the purpose of your bytes_per_pixel variable is though. Shouldn't it be at the line return arr[(s + offs) * bytes_per_pixel] ?

 

[Tarnadas]

Sorry for double post, but I am so hyped right now.

I MADE IT!!

You can now download courses in 3DS format:
http://smm-test.alextc.de/api/downloadcourse?id=<course-id>&type=3ds

It is downloaded as plain bytes without compression, which should make it easy to implement in OCDM, right?

 

[Sono]

Sorry for double post, but I am so hyped right now.

I MADE IT!!

You can now download courses in 3DS format:
http://smm-test.alextc.de/api/downloadcourse?id=<course-id>&type=3ds

It is downloaded as plain bytes without compression, which should make it easy to implement in OCDM, right?

first of all, gg

second, does it support the Range HTTP header? that's what I need

for course info I just get the first 240 bytes (thumbnails aren't supported in the course list), then clicking on the course the thumbnail will be requested, and depending on the level type it should decode JPEG (not implemented yet) otherwise it'll fallback to Morton-swizzled 3DS thumbnail data

but anyways, I'll push a PHP script soon that'll be usable for knowing how OCDM works with networking shit