[wdmaudiodev] Re: Help in KS-Position test
- From: Gaurav Khuntale <gauravkhuntale@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Sat, 5 Apr 2014 16:11:42 +0530
Hi Tim,
Yes, i have if(m_fDmaActive) check in my driver. Do i need any specific
modification ?
I also checked sample driver without modification and found that its also
failing sometimes not always.
I am not doing any great thing in GetPosition function other than taking
current time,calculating elapsed time and calculating possible bytes
processed based on avg bytes per seconds.
Thanks,
Gaurav
On Apr 5, 2014 12:12 AM, "Tim Roberts" <timr@xxxxxxxxx> wrote:
> Gaurav Khuntale wrote:
> >
> > I am able to Pass above mentioned test cases by using
> > KeQueryPerformanceCounter() instead of KeQueryInterruptTime() in
> > GetPosition function. I am having GetPosition() function
> > implementation same as MSVAD sample driver.
>
> Do you still have the "if (m_fDmaActive)" check from the sample?
>
> Have you checked whether the unmodified sample driver will pass these
> tests?
>
> You may need to put some debug prints into GetPosition so you can see
> how it gets called, and how your numbers compare to their computation.
>
>
> > 2) Standard Streaming\Rendering Performance Tests\Position Drift and
> > Jitter
> > Successfully instantiated KSPIN_DATAFLOW_IN pin
> > Submitting 16000 bytes to the pin
> > KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_STOP; want it
> > to be in state KSSTATE_PAUSE
> > Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_ACQUIRE
> > Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_PAUSE
> > Submitting IOCTL_KS_WRITE_STREAM IRP ...
> > IRP is pending...
> > KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_PAUSE; want it
> > to be in state KSSTATE_RUN
> > Setting KSPIN_DATAFLOW_IN pin to state KSSTATE_RUN
> > GetPosition function too slow
> > GetPosition function too slow
> > GetPosition function too slow
> > GetPosition function too slow
> > GetPosition function too slow
> > GetPosition function too slow
>
> Are you doing something in GetPosition that would take a long time?
>
> --
> Tim Roberts, timr@xxxxxxxxx
> Providenza & Boekelheide, Inc.
>
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