Re: iMic
Re: iMic
- Subject: Re: iMic
- From: Mark Cookson <email@hidden>
- Date: Fri, 11 Oct 2002 20:14:55 -0700
On Friday, October 11, 2002, at 08:03 PM, Jeremy Sagan wrote:
Does anyone know why an iMic uses separate input and output devices.
Isn't the whole point of core-audio to synchronize io?
Is it because they cannot be synchronized?
The USB audio class doesn't give a way to synchronize the input and
output streams on a device. There is no way for the AppleUSBAudio
driver to know that these two streams are linked in any way (the USB
audio spec actually says that interfaces should not be linked by
default, but if they need to be, to report that via a non-existent part
of the USB spec; as such we assume they are not linked).
A vendor specific driver could present this type of interface, but not
a generic driver.
--
Mark Cookson
Engineering Droid
Apple Computer, Inc.
Core Audio CPU Software
6 Infinite Loop MS 306-2CW
Cupertino, CA 95014
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| References: | |
| | >iMic (From: Jeremy Sagan <email@hidden>) |