USB implicit data feedback endpoints
USB implicit data feedback endpoints
- Subject: USB implicit data feedback endpoints
- From: Daniel Mack <email@hidden>
- Date: Wed, 4 Apr 2007 19:26:24 +0200
Hi,
The USB spec allows isochronous data IN endpoints to act as clock
source for other isochronous OUT endpoints (implicit feedback, USB2.0
spec 5.12.4.3).
Is such a model implemented in Apple's USB audio class driver? From
reading the source, it seems to me that only dedicated isochronous
feedback endpoints (those which deliver samplerate information
according to 5.12.4.2).
If that is true, is there a way to realize data streams which are
clock-driver by the device be realized in a class compliant context,
apart from dedicated feedback endpoints?
The whole streaming seems to be defined a more detailed in the audio
class v2.0. Is there any change this will be supported in the next
future?
Greets,
Daniel
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