Comments on: iPhone Programming Part 6: Multiple Sounds with OpenAL

By: R Cober

R Cober — Fri, 23 Jul 2010 21:37:39 +0000

Excellent Tutorial – I was working with the ancient SoundEngine.cpp source from the eary iphone sdk…
it was annoying buggy and cpp based.

Your sample works great – thank you for posting…

By: Michael

Michael — Sun, 18 Jul 2010 13:44:14 +0000

Probably a n00b question, but …

warning: passing argument 2 of ‘loadSoundWithKey:File:Ext:Loop:’ from incompatible pointer type

warning: passing argument 3 of ‘loadSoundWithKey:File:Ext:Loop:’ from incompatible pointer type

is that normal? That’s a warning I get when I use this code.

By: Steve

Steve — Thu, 08 Jul 2010 10:02:38 +0000

Hi. Thanks for tutorial it was VERY useful. Can somebody help me how to save all this buffers with opened sample to one buffer and then save it to file (mp3 for example).
Thanks

By: Weekly Digest for May 2nd — Hello. My name is Václav Vančura.

Weekly Digest for May 2nd — Hello. My name is Václav Vančura. — Sun, 02 May 2010 17:30:41 +0000

[...] coders» Blog Archive » iPhone Programming Part 6: Multiple Sounds with OpenAL [...]

By: David Gordon

David Gordon — Wed, 28 Apr 2010 10:55:57 +0000

Hi again!

Managed to implement all the functionality I need for my final project now!

It’s a little bit buggy, but it works, and I passed my project outputs review, so I just wanted to say thanks again!

There’s a couple of things that I need to do before I can release my App though (besides ironing out the bugs).

Firstly (and most importantly), at the moment, the audio that my application plays is hardcoded in, in the same way that it is in the sample app, so to choose which audio is played I have to edit the actual code, which isn’t ideal for what I’m doing.

I want to be able to display a list of .caf files that are in the applications documents directory, and be able to choose one within the app, and have it load that, and also be able to choose a new one at any time (my app is a music player of sorts, so I want to be able to select a track basically!).

Does anyone have any pointers for this? I’ve tried Google, but all it comes up with is links to pages for iPhone file browser apps…

Secondly, I was wondering if it was possible to use the Audio Converter services, so that its possible to load an mp3, convert it to .wav (this works with OpenAL right?) or .caf so that it can be used within my app, instead of having to convert on my laptop first, and then use it with my app.

Thanks in advance,

Dave

By: takmatsumoto

takmatsumoto — Sun, 18 Apr 2010 08:15:48 +0000

I build this sample successfully, but I can’t here any sound when I played any .caf or .aif sound……Did I do something wrong??

By: takmatsumoto

takmatsumoto — Sun, 18 Apr 2010 07:09:51 +0000

I have try this sample….but I when I played….there is no sound…..would you help me??

By: Mini Plane: het ontwikkelen van een iPhone-game, deel 7 - iPhone - iPhoneclub.nl

Mini Plane: het ontwikkelen van een iPhone-game, deel 7 - iPhone - iPhoneclub.nl — Fri, 16 Apr 2010 12:32:20 +0000

[...] te krijgen. Een must have!Voor het geluid was een erg handige (en korte) tutorial te vinden op gehacktes.net. De code is weer gebaseerd op de eigen code van Apple (MyOpenAl) en ze hebben al een nieuwe versie [...]

By: hhamm

hhamm — Mon, 12 Apr 2010 14:59:52 +0000

Sorry for beeing breef, I’m currently short in time. I am not sure if I understood you right. May be you should check one of the following :
1. seek in a search engine like google for : “openAL offset”
2. Jump directly to here.
cheers,
Hans

By: David Gordon

David Gordon — Wed, 07 Apr 2010 16:59:08 +0000

Thank you very much for your SoundEngine code and sample App.

I am a novice iPhone programmer, and without it I would likely have failed my year at uni due to being unable to complete my final project.

I think I should be able to adapt your code to obtain most of the functionality I require, however, I was wondering if you could give me some suggestions as to me how I could implement a method which saves the play position (the time elapsed since the start of playing the file), and then another which returns the file to this position, so that when you play it again it starts from there.

(This is for the file being played with OpenAL, not the background audio!)

Thanks once again, and thanks in advance!