[wdmaudiodev] Re: Usb Audio Driver
- From: "Thomas Zepf" <thzepf@xxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 17 Jul 2003 22:19:52 +0200
Hello DJ,
here my whishes based on my recend device.
1. USB Midi support .
I know there is Midi in XP and Me but that part is not working
very well (unplug problems). A usb audio device with Midi produces
a blue screen under W2000 and 98.
Further it might be a good idea to do the midi stuff in another
driver. I had really strange problems with USB Midi in XP until
I removed the Midi interface from the audio class and declared
a custom interface.
2. Support for the DFU class.
Since the DeviceFirmwareUpdate is already defined, This
would simpify upgrades. I managed that with a custom
device descriptor and driver. Get /Set Mem won't be a
solution for upgrades but might be usefull to download dsp code.
3. Vendor Requests.
The possibility to send Control Requests (Vendor Requests)
to a usb audio device. This would simplify the impementation
of unsupported features (Mixers for example)
4. backport of new features at least to W2000.
5. a doc which parts of the spec are implemented.
6. 96k in halfduplex mode for Usb 1.1
or even better Usb 2.0 support.
Thanks
Thomas
----- Original Message -----
From: DJ Sisolak <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
To: <wdmaudiodev@xxxxxxxxxxxxx>
Sent: Wednesday, July 16, 2003 7:50 PM
Subject: [wdmaudiodev] Re: Usb Audio Driver
> Hello all,
>
> I know I am asking for trouble here :-) but what is it in the
> USBAudio.sys driver or the USB Audio standards that does not serve your
> needs? Why do you find it necessary to create your own drivers? The
> reason I ask is that we are in the process of updating both the driver
> and the specifications.
>
> Thanks,
> DJ Sisolak
> Microsoft Corp.
>
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>
> -----Original Message-----
> From: wdmaudiodev-bounce@xxxxxxxxxxxxx
> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of
> bart@xxxxxxxxxxxxx
> Sent: Wednesday, July 16, 2003 6:24 AM
> To: wdmaudiodev@xxxxxxxxxxxxx
> Subject: [wdmaudiodev] Re: Usb Audio Driver
>
> Hi,
>
> > I don't find the DDK say we can't use PortCls to implement USB Audio
> Driver.
> >
> You can do it, I also did :)
>
> > DDK say "The PortCls framework might also be useful for constructing
> drivers
> > for audio device on other hardware buses or for software only
> device.". So
> > PortCls may not wrong way to implement USB Audio Driver.
> >
> Somewhere else in the DDK it says that for USB sound devices you should
> use a
> standard USB device structure. If you doing it another way, you don't
> get any
> examples from MS. I needed some ugly hacking to get it done anyway.
>
> Regards,
> Bart
> ******************
>
> WDMAUDIODEV addresses:
> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
> Unsubscribe:
> mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
>
> URL to WDMAUDIODEV page:
> http://www.wdmaudiodev.de/
>
>
>
> ******************
>
> WDMAUDIODEV addresses:
> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
> Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
>
> URL to WDMAUDIODEV page:
> http://www.wdmaudiodev.de/
>
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.de/
Other related posts:
