Dears,

stream class also supports external sound device in addition to video
capture device.
I would develop usb audio driver based on stream class.
I cannot find the information about how to report audio pin for stream
class.
Does anyone know to report audio pin for stream class?

Best Regards

Jackal Huang

"Jackal Huang" <huangjj@hotmail.com> wrote:
You really, really don't want to do that. USBAUDIO.SYS has 8 years of
development and heavy use behind it, and it STILL isn't perfect.

You should make your hardware compliant with the audio class and let
USBAUDIO.SYS handle it.
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc

I also very want to use usbaudio.sys.
However, it doesn't support usb 2.0 device.
After ask for microsoft, the answer is....
"even LongHorn may not support usb 2.0 audio device"
I cannot wait for Microsoft's usb 2.0 audio driver.

Best Regards

Jackal Huang

"Tim Roberts" <timr@probo.com> ...

"Jackal Huang" <huangjj@hotmail.com> wrote:
Of course not. What's the point? There is no conceivable audio stream
that cannot be handled with 10 megabits per second. Given that, it is
nothing but a waste of resources to make a USB 2.0 audio device.
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc

Yes, you are right.
usb 1.1 bandwidth is enough for audio,
but video stream can take advantage of usb 2.0 high bandwidth transfer
our device is a multi-interface usb 2.0 device.
It contains video interface and audio interface.
audio interface will be regard as usb 2.0 audio device

Best Regards

Jackal Huang