USB Device Transport Type
USB Device Transport Type
- Subject: USB Device Transport Type
- From: Cobey Gatos <email@hidden>
- Date: Tue, 28 Aug 2007 16:50:42 -0400
What are the possible issues involved in declaring the device
transport type for a USB audio driver
"kIOAudioDeviceTransportTypeOther" instead of
"kIOAudioDeviceTransportTypeOther"? I understand that timestamps are
handled slightly differently for USB devices, and I am wondering how
important this difference is.
I ask because I have discovered that some applications, or at least
Cubase, will impose bandwidth limitations on my driver that prevent
it from working if I declare the device transport type as
"kIOAudioDeviceTransportTypeUSB". Declaring the device with
transport type "kIOAudioDeviceTransportTypeOther" works around the
problem.
Also, are there any plans to add a USB 2.0 transport type to the
device connection type defines?
Thanks.
Cobey
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