[wdmaudiodev] Re: Fwd: Exclusive mode in Vista

  • From: Frank Yerrace <Frank.Yerrace@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Mon, 2 Jul 2007 11:32:29 -0700

I can't comment on specific future plans, but I will say that enhancements to 
DirectShow are much less likely than enhancements to newer areas like 
MediaFoundation and WASAPI. If you would like to respond directly to me I'll 
gather more details about your scenario and make sure it is (or has been) 
properly represented in our planning process.

Frank Yerrace
Microsoft Corporation
This posting is provided "AS IS" with no warranties, and confers no rights.

From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of T C
Sent: Monday, July 02, 2007 2:33 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Fwd: Exclusive mode in Vista

Dear Frank,

Thanks for your reply.

That means if an AP needs implement WASAPI in order to stream PCM audio in 
exclusive mode.
Therefore have to implement an audio renderer to support exclusive mode under 
DierctShow architecture :(

Would MicroSoft consider to have a way to enable exclusive mode thru DirectShow 
audio renderer's interface?

Regards,
Cyndi


2007/6/28, Frank Yerrace 
<Frank.Yerrace@xxxxxxxxxxxxx<mailto:Frank.Yerrace@xxxxxxxxxxxxx>>:

This exclusive mode is not directly available to APIs other than WASAPI. 
However, the audio system might automatically uses exclusive mode if the 
application attempts to use an encoded format (and if the output supports the 
format, and if the Sound control panel settings allow it).



Frank Yerrace

Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.



From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
<mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx> 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx<mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx>]
 On Behalf Of T C
Sent: Wednesday, June 27, 2007 1:23 AM
To: wdmaudiodev@xxxxxxxxxxxxx<mailto:wdmaudiodev@xxxxxxxxxxxxx>
Subject: [wdmaudiodev] Fwd: Exclusive mode in Vista



Dear all,



I have a question about exclusive mode in Vista.



In Vista, audio could be streaming in exclusive mode thru IAudioClient.

Is it the only to use Core Audio API to enable exclusive mode?

Or it could be enabled through higher-level API,

such as DirectSound or even we could enabled it through Directshow audio 
renderer's interface?



I am wondering if exclusive mode could be enabled through IDirectSound's 
SetCooperativeLevel(hwnd, DSSCL_WRITEPRIMARY); ?



Thanks for your kind help.



Regards,

Cyndi




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