Re: AUVarispeed - kAudioUnitProperty_RenderQuality
Re: AUVarispeed - kAudioUnitProperty_RenderQuality
- Subject: Re: AUVarispeed - kAudioUnitProperty_RenderQuality
- From: Doug Wyatt <email@hidden>
- Date: Mon, 18 Sep 2006 17:59:17 -0700
On Sep 18, 2006, at 11:31 , Eric Lee wrote:
Hi Roni,
kAudioUnitProperty_RenderQuality is a valid property to set on
AUVarispeed for 10.4.7. By default, it is set to maximum quality.
It is likely that older versions of AUVarispeed don't support this
property, and in those cases you can safely ignore the error
(setting it will just have no effect).
Note, however, that you cannot currently set the render quality
property on an AUVarispeed unit after it has been initialized.
This is a known bug in Core Audio.
Well, it appears that the varispeed doesn't support this property
being changed once it's been initialized. This seems reasonable --
the post-initialization state implies being able to render promptly,
without blocking, and changing the quality probably requires some
internal reconfiguration.
--
Doug Wyatt
Core Audio, Apple
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