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Core Audio beginner questions
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Core Audio beginner questions


  • Subject: Core Audio beginner questions
  • From: David Scrève <email@hidden>
  • Date: Sun, 22 Jun 2003 18:33:53 +0200

Hello,

I'm trying to port my sound API to CoreAudio and I have severals
questions that are not answered by the manual (which is also very hard to
find in developer doc pages):
* First of all, I would like to be able to play severals buffered
files at the same time. My code is responsible of filling the buffer and
reading from the files but all files have differents sounds format (number
of channel, bytes per sample, sample rate). Should I have to create one
AudioUnit per file and could I have severals AudioUnit with same or
different sound format ? And, am I forced to send floating point values to
CoreAudio ?

* I saw severals sources that are using the AudioDevice directly.
What's the best way for my problem : Audio Device or AudioUnit ?

* Can I change the size of the buffer I sent to CoreAudio and know
the current playback position in each buffer (I need to know, in addition,
when a buffer begin to be played ) ?

Thanks for your help,

David
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