OpenAL

J.F. · Post by **J.F.** » Sun Mar 15, 2009 2:52 pm

As part of something Wally and I are working on, I needed to port OpenAL to the PSP. Here's the initial result. This is a port of OpenAL-Soft 1.6.372, and freealut 1.1.0. I also converted the examples to the PSP for testing.

What do you get? You get an output device that outputs 16 bit stereo at 44100 Hz (the mixer will convert other rates and formats to that), and an input device that captures 16 bit mono at 44100, 22050, or 11025 Hz (you MUST specify that EXACTLY or it won't open).

There are two OpenAL examples - one that gives all the info about the driver, and another that captures from the mic and plays out the headphones (only SOCOM mic support right now). There are two ALUT examples - one that plays the built-in "Hello World" waveform, and another that plays four different waves from the memstick.

The capture example is particularly handy as it's almost impossible to find OpenAL capture example code on the net. My example was based off an abandoned non-functional example someone did but couldn't get working.

freealut-psp-090314.zip
openal-soft-psp-090314.zip

Chrighton · Post by **Chrighton** » Mon Mar 16, 2009 8:56 am

Nice work as always, JF. I was considering looking into porting OpenAL in the coming weeks/months as it seemed no one was ever going to do it :)

Wally · Post by **Wally** » Mon Mar 16, 2009 9:32 am

it took him five minutes :P

Chrighton · Post by **Chrighton** » Mon Mar 16, 2009 9:39 am

Then he saved us five minutes :D

J.F. · Post by **J.F.** » Mon Mar 16, 2009 10:09 am

Wally's just exaggerating a little as a joke... it was actually probably about 10 hours of work all added up, with much of that being debugging. If you find a problem, be sure to let me know... or post a fix in the thread if you correct it yourself.

Drakon · Post by **Drakon** » Tue Mar 17, 2009 3:41 am

J.F. - love you :) Seriously thanks for you hard work :> I will also test library :)

NoEffex · Post by **NoEffex** » Tue Mar 17, 2009 6:25 am

Have I ever told you I want to bear your children? Because I do.

justin · Post by **justin** » Wed Mar 18, 2009 12:08 pm

This makes me happy! Thnx.

fungos · Post by **fungos** » Mon Apr 06, 2009 10:44 am

Is that on svn or psp libraries script already?

Pirata Nervo · Post by **Pirata Nervo** » Mon Apr 06, 2009 9:43 pm

Thanks for sharing :)

J.F. · Post by **J.F.** » Tue Apr 07, 2009 12:14 pm

@Pirata: You're welcome.

@fungos: Most lib conversions don't get added to the svn unless they're pretty important. OpenAL isn't one of those things you see too often, so it would surprise me if it ever made it into the repo.

fungos · Post by **fungos** » Tue Apr 07, 2009 10:32 pm

@J.F.: Yeah. I think OpenAL is amazingly important for any game ;) Maybe we can get it into svn.

Good job btw, you're the man.

justin · Post by **justin** » Thu Jan 28, 2010 12:27 am

Finally got around to implementing this in a game. Works out of the box, thanks :) Bye bye SDL_mixer!