[wdmaudiodev] Re: How to Get PID of a audio player in the audio driver
- From: Dennis Scott <dennis.scott@xxxxxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 8 Oct 2009 10:14:01 +0530
Thanks Frank.
On Wed, Oct 7, 2009 at 11:03 PM, Frank Yerrace
<Frank.Yerrace@xxxxxxxxxxxxx>wrote:
> Audio device drivers- i.e. kernel mode WDM audio drivers- receive the
> mixed output of all locally connected sessions and all remote sessions that
> are connected with the “Leave sound at remote computer” option. Remote
> sessions that are connected with the “Bring sound to this computer” option
> have their sound redirected over the network to the client computer through
> a separate mechanism designed specifically for remote desktop experiences
> (as I’ve said before several times in several different ways).
>
>
>
> Frank Yerrace
>
> Microsoft
>
>
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>
>
>
> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:
> wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Dennis Scott
> *Sent:* Wednesday, October 07, 2009 3:52 AM
> *To:* wdmaudiodev@xxxxxxxxxxxxx
> *Subject:* [wdmaudiodev] Re: How to Get PID of a audio player in the audio
> driver
>
>
>
> Can any one please answer these questions w.r.t Terminal server audio
> operations in VISTA.
>
>
> 1. will audio engine has only one instance per system or it is instantiated
> in each terminal server session (i.e, output of audio engine to Device
> driver is mixed output of all session stream or individual session stream)
> 2. If i get a audio stream in my driver is their a way that i can decide
> that stream is from session with id X.
>
> On Tue, Oct 6, 2009 at 12:42 PM, Dennis Scott <dennis.scott@xxxxxxxxxxxxxx>
> wrote:
>
> Clemens wrote:
> >>Kernel drivers don't really belong to sessions.
>
> i knows that, prior to VISTA it belongs to console session session ID 0,
> from vista it belongs to isolated session 0.so i wanted to get session id
> from a application, but that cant be done as audiodg.exe is in between the
> app and the driver.
>
>
>
>
> >>What do you need the session ID for?
>
> I wanted sessionID for RDP sound speaker/Mic operation in VISTA.
>
>
>
> On Tue, Oct 6, 2009 at 12:18 PM, Clemens Ladisch <clemens@xxxxxxxxxx>
> wrote:
>
> Dennis Scott wrote:
> > call PsGetCurrentProcess() to get the current process and then trying to
> get
> > sessionId from this process using unDocumented PsGetProcessSessionId(),
> some
> > times this will give me correct Session id but under some scenarios this
> > will return only 0.
>
> Kernel drivers don't really belong to sessions.
>
> What do you need the session ID for?
>
>
> Best regards,
> Clemens
>
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