Does AUAudioFilePlayer support offline rendering yet?
Does AUAudioFilePlayer support offline rendering yet?
- Subject: Does AUAudioFilePlayer support offline rendering yet?
- From: Jens Alfke <email@hidden>
- Date: Mon, 31 Dec 2007 08:35:16 -0800
I'm considering using AUAudioFilePlayer, but while researching it I
found a post from July, by Bill Stewart, stating that it doesn't
support offline rendering:
http://lists.apple.com/archives/Coreaudio-api/2007/Jul/msg00055.html
On 09/07/2007, at 10:33 AM, patrick machielse wrote:
The problem: AUAudioFilePlayer seems to revert to producing zeroed
out
data at random (I've installed a render callback on the file player
to
verify this). [...]
What I've tried:
- setting the kAudioUnitProperty_OfflineRender property. It's not
supported by AUAudioFilePlayer it seems (but I believe this doesn't
mean
that the file player can't be used at all in an offline context).
Currently, that is the case (and this is the cause of the problem).
As you are in an offline context, you could use the
ExtendedAudioFile API directly (so instead of connecting the
AUFilePlayer, you could use a callback and in the callback use the
ExtAudioFileRead call - it should work fairly easily I think).
Is this still the case in Leopard?
--Jens
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