Re: AUVarispeed - kAudioUnitProperty_RenderQuality
Re: AUVarispeed - kAudioUnitProperty_RenderQuality
- Subject: Re: AUVarispeed - kAudioUnitProperty_RenderQuality
- From: Eric Lee <email@hidden>
- Date: Mon, 18 Sep 2006 11:31:49 -0700
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.
Eric
On Sep 18, 2006, at 1:37 AM, Roni Music wrote:
Hi,
I'm using the AUVariSpeed and I have it working fine.
One question:
Should I set the kAudioUnitProperty_RenderQuality property?
Doing it under 10.4.7 works fine (at least it doesn't return any
error) but under 10.2.8, it returns error -10879
(kAudioUnitErr_InvalidProperty)
Here's what I do?
UInt32 quality = kRenderQuality_Max;
// set quality
UInt32 propSize = sizeof(quality);
theErr = AudioUnitSetProperty(
mConverterUnit,
kAudioUnitProperty_RenderQuality,
kAudioUnitScope_Global,
0,
(void *)&quality,
propSize);
if (theErr != noErr)
return theErr;
Is there any quality setting to set for AUVariSpeed?
if there is, what's the default setting?
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