[Release] Minimal BD-J (Java) Devkit for PS3

[FreePlay]

I've been busy...

I put together a minimal SDK for BD-J development. Enjoy.

Download (Sendspace)

BD-J for PS3 minimal devkit by FreePlay

NOTE: For this to work properly, you *MUST* copy it to the root of your C: drive - that is, to C:\bdj-ps3. DO NOT rename the folder.

Included is everything you'll need to get started except for:
1. a working installation of JDK, the Java Development Kit (get that from http://java.sun.com/javase/downloads/index.jsp - currently, the latest version is JDK 6 Update 7)
2. a copy of bdj.jar, the BD-J API. I can't provide this, since you need a license to use it; however, if you have a PC program capable of making or playing Blu-Ray discs - like Nero or PowerDVD - you can get this file from there. (In Nero 8, the file is located in C:\program Files\Common Files\Nero\NeroBLC\BDJ\jl ib .)

I don't have any real documentation on BD-J, though I'm sure you can find some on the HDCookBook website. In the 'docs' folder is some basic info on BD-J on a very high level.

So far as I can tell, there are some pretty strict limitations on the PS3's implementation of BD-J:
1. You cannot read or write local files.
2. You cannot list the contents of a directory.

I may be wrong, so feel free to correct me, but I ran a few tests and couldn't do those things.

I've also included a sample Hello World application and silenoz's RSS reader, as well as a build.bat file for building, packing, and signing the programs. This batch script is pretty much universal, unless you need to add in other JAR files for your compilation.

Source files for each project should go in a folder called root\org\homebrew. For example, if you make a project called "Test App", in your "Test App" folder you'll place the universal build.bat , then make a root\org\homebrew folder and place your .java files in there. The 'root' folder will become the root of your JAR file; any files you place in that structure will become part of the JAR.

The 'disc files' folder contains the file structure for what you'll copy to your storage device. Once you've built your 00000.jar file, copy it to 'AVCHD\BDMV\JAR\' and you'll be ready to test it.

Good luck!

[zmathue]

BD-J.jar is also in trial software, at least cyberlink power dvd
in navfilter dir.

[Cooguy1212]

Nice Freeplay! Your bringing a little PS3 scene here!

[Deathinnate]

I'm supposing there won't be a Linux version anytime soon?

[FreePlay]

There could be; it's just a matter of snooping through the build.bat file and tweaking the commands (since Java is pretty ubiquitous).

[Realn0whereman]

thanks you've cleared up alot for me :). i might write something.

[Cooguy1212]

thanks you've cleared up alot for me :). i might write something.

Good luck

[reaperchad]

Sony is just watching with a trigger in their hands *system update. Hopefully they will overlook this as long as no real exploits come out that would allow cfw.

[BigSanFrey]

I am sure that FreePlay doesn't support piracy (i doubt DAX does either), and he wouldn't add an ISO loader, which i reckon heaps of people would like!

[Sly_Ripper]

You know, you can't just add a iso loader to it. If even it was possible it would take a hell of a lot of work and time.

[reaperchad]

I am sure that FreePlay doesn't support piracy (i doubt DAX does either), and he wouldn't add an ISO loader, which i reckon heaps of people would like!

Where the hell did you think that up? This has nothing to do with an ISO loader, concentrate on the thread's subject.

[SamS]

Good work FreePlay :)

We also know that BD-J uses Java version 1.3. I have also been looking around at some java apps and emulators. Here are a few:

JPC (x86 Based Emulator capable of running linux and dos games)
http://www-jpc.physics.ox.ac.uk/index.html

PSP (In progress)
http://www.jpcsp.org/

List of standalone games
http://www.codebeach.com/index.asp?t...ryID=11&Page=1

All look decent enough to port. Not sure how you would go about it though. May need a lot of rebuilding.

SamS

[JordanBlack68]

Pretty Impressive FreePlay

[eldiablov]

Thanks for this Freeplay, it sure will help me. I was having a lot of trouble setting up ...

Thanks for the list SamS

[zmathue]

Sony is just watching with a trigger in their hands *system update. Hopefully they will overlook this as long as no real exploits come out that would allow cfw.

um.. No, avchd is used for personal high def camcorders. Sony and many other companies support this in there blu-ray players. As I have said before this is not an exploit this isn't even any new news, it been around as long as blu-ray players have been around.

[bmfgeorgin2]

wait what does this mean? you made a hello world so homebrew?

[Moose]

wait what does this mean? you made a hello world so homebrew?

Wow... How about reading the first post?

[bmfgeorgin2]

so from my reading of the first post and not understanding 90% of it, we have minimal homebrew now on PS3?

[jgtc_lover]

so from my reading of the first post and not understanding 90% of it, we have minimal homebrew now on PS3?

I think it's just java programs that have to be written into something. When it comes to this stuff, i b nub, so I don't mean to offend anyone with my lack of knowledge.

[Brainbeat]

Thank you freeplay

[MiKeY188]

Thanks man must get the java book back out lol

[SamS]

Yes we have minimum homebrew, ie. we can only run apps and games that are written and compiled in java 1.3. There are many out there but most need rebuilding alot.

[Brainbeat]

wht about 1.1 1.2 can they be recoded.
Nope 1.3 only

[Nero]

Thanks for this, it will come in handy :)

[zmathue]

wht about 1.1 1.2 can they be recoded.
Nope 1.3 only

It should be any before 1.3 (actually it can be 1.4 but freeplay has it set for 1.3) because they build an new release on top of and old one for compatibility.

[Realn0whereman]

It should be any before 1.3 (actually it can be 1.4 but freeplay has it set for 1.3) because they build an new release on top of and old one for compatibility.

doesn't the ps3 run 1.3? so 1.4 would be a no go? im probably missing something.

[zmathue]

It’s crucial to change your “Java Compiler” settings to use compiler compliance level 1.4. If you use 5.0, the classes apparently won’t load. This suggests that the BD-J implementations are based on Java 1.4, and that compiling under a newer JDK introduces new features that older VMs can’t handle.

Well some places say some things and some places say others, so I guess its safer to go with 1.3.

[Brainbeat]

anyone have some good references for java learning?

[Brainbeat]

Heres an alternative rss reader mod. it reads rss headlines only, and im hoping i can improve the code, so that it reads all info.linked to qj.net
http://www.sendspace.com/file/6f8e1f

[Realn0whereman]

anyone have some good references for java learning?

depends how much you know already. once you know a programming language its not hard to pick up on another as most share the same concepts.