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We have a USB2 Highspeed high bandwidth device with an AS In and an AS out interface. The device will use from 1 - 3 (total) transfers per uFrame depending on the alt setting selected. We have been able to stream audio with channel counts requiring 2 transfers per uFrame, but when the channel count exceeds a threshold, STATUS_INSUFFICIENT_RESOURCES is returned when calling WdfUsbInterfaceSelectSetting () on the AS OUT interface. Interestingly, the increase in channel count DOES NOT require a change the number of transfers or wMaxPacketSize Is there any extra usb-specific logging that can be enabled? We're calculating our bandwidth consumption be about 56% os the 480mb available.
The framework log for our driver is not particularly enlightening.
Thanks for your time!
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