Re: USB devices changing UIDs
Re: USB devices changing UIDs
- Subject: Re: USB devices changing UIDs
- From: Jeff Moore <email@hidden>
- Date: Wed, 12 Dec 2001 12:03:17 -0800
on 12/12/01 12:40 AM, Sven Duwenhorst <email@hidden> wrote:
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the Roland UA-30 changes its uniqued ID string, when switching thr sampling
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frequency from 44.1 to 48. This is a strange behaviour, because unique IDs
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of devices shouldn't change at all, especially when changing a property of
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the device.
>
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The unique ID string should NEVER contain any setup information of the
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device as sampling frequency, number of channels, bit depth, clock source,
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input ...
Agreed! Please write a bug report about this.
That said, the UID for a device can change since it is derived in part from
its position in the USB network topology, assuming the device doesn't have
it's own UID as described in the USB spec.
--
Jeff Moore
Core Audio
Apple