Our Developer Transition System arrived yesterday. Took a couple of hours to
make gcc 4 happy. Everything about our app now works *except* isochronous
output to our audio device. Is that the issue you refer to below? Is there a
workaround?
We use the LowLatencyReadIsochPipeAsync and LowLatencyWriteIsochPipeAsync
functions with buffers allocated with LowLatencyCreateBuffer.
LowLatencyWriteIsochPipeAsync returns with no error. The async callback also
indicates no error, however we only get silence from the device.
Also, is there a debug version of the IOUSBFamily for intel Mac?
Steve
--
Steve West (née Hoek) Ph. +64-9-480-2396
Director of R&D Fax. +64-9-480-2397
Serato Audio Research Ltd http://www.serato.com/
From: David Ferguson <email@hidden>
Date: Wed, 13 Jul 2005 16:14:06 -0700
To: <email@hidden>
Subject: Experiences with Developer Transition Systems
I understand that lots of Developer Transition Systems have shipped,
and we've been wondering what USB developer experiences are with
those systems. Have you tested your devices and built your drivers
for universal distribution? If you haven't ordered one, you can
still do that at http://developer.apple.com/
We are aware of some issues (Isoc buffers much be allocated in
contiguous physical memory), but we think support for the USB
controllers in those systems is pretty robust. However, we would
like to hear it direct from developers.
Please use this mailing list to share your experiences.
David Ferguson
USB Software Team
Apple Computer
