[wdmaudiodev] Re: usbaudio.sys and descriptors

  • From: Alan Davis <alan_davis@xxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Wed, 04 Nov 2015 20:28:27 +0800



Ok I tired setting to adaptive, no change...



On 4 Nov 2015, at 20:18, Clemens Ladisch <clemens@xxxxxxxxxx> wrote:

Alan Davis wrote:
I have not tested adding and sync

I somehow get the impression that you have no clue what I'm talking
about.

Section 4.6.1.1 of the USB Device Class Definition for Audio Devices
says:
The bmAttributes Field bits are set to reflect the isochronous type
of the endpoint. The synchronization type is indicated by D3..2 and
must be set to Asynchronous, Adaptive or Synchronous.

These types are explained in section 5.12.4.1 of the Universal Serial
Bus Specification Revision 2.0.


Regards,
Clemens
******************

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.com/

******************

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.com/

Other related posts: