Re: Audio queues...again
Re: Audio queues...again
- Subject: Re: Audio queues...again
- From: William Stewart <email@hidden>
- Date: Mon, 27 Apr 2009 18:24:07 -0700
On Apr 27, 2009, at 1:53 PM, Etienne Gignac Bouchard wrote:
Thank for replying.
I forgot to mention : iphone sdk 2.2.1, format is wav.
I need 2 audio queues to start playing at the exact same host time.
I tried enqueuewithparameters on the first buffers of the queues
with a absolute hosttime but it is completely ignored.
This is an issue that we have since addressed, but it is broken with
2.2.1
I have been looking into remoteIO. Although lower level, I heard
people have had success with them to play files simultaneously with
multiple audio units through a mixer.
you can play files simulateously using audio queues as well - it does
the same mixing, etc as you would do here.
The difference is whether you have them synchronised, which currently
you don't with audio queue. With remote I/O you can handle the
synchronisation yourself as you are responsible for the mixing.
One thing you need to bare in mind though is that you cannot read the
files from the i/o thread - so you need to either load the entire
files into memory (not advisable if the files are big of course), or
build a threading playback model (its not an insignificant amount of
work).
But if I can find a working case of enqueueing with host times, I
might change my mind....do you have code that works in that fashion ?
I'm not sure that we do
Bill
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