[wdmaudiodev] Re: Vista destroys WavePciStream in the KSSTATE_PAUSE
- From: "Philip Lukidis" <plukidis@xxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 31 Jan 2007 10:26:08 -0500
FWIW, I don't get this on two devices here, but then I am using wavecyclic
miniport for both of cases. One device uses a DataRangeIntersection handler,
while another uses a _PROPOSEDATAFORMAT (both are multichannel devices). I had
to use a DataRangeIntersection handler in one device because I found that
should a _PROPOSEDATAFORMAT handler fail 44100/16, I never get queried at
another rate.
Not the best data point, but hth.
Philip Lukidis
> -----Original Message-----
> From: wdmaudiodev-bounce@xxxxxxxxxxxxx
> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx]On Behalf Of Eugene
> Muzychenko
> Sent: Monday, January 29, 2007 4:21 AM
> To: wdmaudiodev@xxxxxxxxxxxxx
> Subject: [wdmaudiodev] Vista destroys WavePciStream in the
> KSSTATE_PAUSE
>
>
> Hello!
>
> Recently I implemented KSPROPERTY_PIN_PROPOSEDATAFORMAT
> property handler
> to support multi-channel PCM streams in my driver under Vista. Since
> the handler was implemented, I started to play with the "Test" button
> near the audio format list at the advanced device properties page.
> When a test is initiated, a pin instance is requested from my filter
> and PortCls creates a stream (WavePciStream). Then stream state is
> changed to KSSTATE_ACQUIRE then to KSSTATE_PAUSE, and then the stream
> is immediately destroyed (all references are Release'd) without
> changing stream state to KSSTATE_ACQUIRE/KSSTATE_STOP.
>
> This happens only if testing by the Test button at advanced properties
> page. Using common audio interfaces (DirectSound, MME) I didn't notice
> such behavior. No other OS (Win 2000/XP/2003) behaves like that.
>
> It is definitely a bug because DDK documentation guarantees state
> transition to KSSTATE_STOP before destroying a stream.
>
> Did anybody experience such behavior? I have 32-bit Vista build 6000.
>
> Regards,
> Eugene
>
>
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