Catching output from OpenAL

Subject: Catching output from OpenAL
From: Pi <email@hidden>
Date: Mon, 6 Dec 2010 21:24:05 +0700

Hello people,

I am adapting some very nice code that takes in a bunch of 15 or so sampled piano notes, like Eb3, F#4, B5, and then plays any note you ask of it, by pitch shifting the nearest sample.

I hesitate to post code here as Google always does something horrible with it. Code is here: http://stackoverflow.com/questions/4364901/ios-pitch-shifting-piping-output-from-openal-into-a-buffer

I am running into trouble as I need to play a big bunch of notes simultaneously, and the iPhone just can't handle it. I guess a dozen concurrent FFTs is pushing it a bit.

so I want to pre-buffer everything. I can't see how to do this.

How can I catch the output of OpenAL (ie this line:)

            alSourcePlay(source->sourceId);

and somehow pipe this into a buffer, or connect it up to some audio unit so I can intercept the render callback, etc? ie how can I get access to it in any way?

Sam

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

Follow-Ups:
- Re: Catching output from OpenAL
  - From: Zack Morris <email@hidden>
- Re: Catching output from OpenAL
  - From: tahome izwah <email@hidden>
- Re: Catching output from OpenAL
  - From: Paul Davis <email@hidden>

Prev by Date: Cannot see audio device
Next by Date: Re: Catching output from OpenAL
Previous by thread: Re: Cannot see audio device
Next by thread: Re: Catching output from OpenAL
Index(es):
- Date
- Thread