[wdmaudiodev] Re: Need help in Wave Test

  • From: Gaurav Khuntale <gauravkhuntale@xxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Tue, 4 Feb 2014 10:19:54 +0530

Hi Tim,

Yes, i started with MSVAD sample. There are major modifications in sample
code ( actually i haven't did this modifications, i am working on a driver
code which was already half-written. It was already containing wave filter
implementation and topology filter implementation. ).

Also i have less understanding of driver connection with OS. I am learning
it now. Thanks for the explanation of how IOCTL_KS_RESET_STATE works. So is
there anything which i must do in SetState method which i may be missing?

And i am returning IDMAChannel object from NewStream.


On Tue, Feb 4, 2014 at 1:06 AM, Tim Roberts <timr@xxxxxxxxx> wrote:

>  Gaurav Khuntale wrote:
> I am working on following failure in wave test,
> What sample did you start with?  Was it msvad?
>  1) Standard Streaming\Rendering Pin Tests\Reset Pin while streaming data
>      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
>     Position reported before issuing KSRESET_BEGIN = 121 bytes
>     KSPIN_DATAFLOW_IN pin is currently in state KSSTATE_RUN; want it to be
> in state KSSTATE_RUN
>     Resetting Pin state: IOCTL_KS_RESET_STATE (KSRESET_BEGIN)
>     Position reported after issuing KSRESET_BEGIN = 0 bytes
>     Submitting IOCTL_KS_WRITE_STREAM IRP ...
>     GetLastError did not return ERROR_IO_PENDING even though the pin is
> paused
>      [ GetLastError() returned 21 (0x15) - The device is not ready.   ].
>     FAIL: Failed WriteData(Render)/ReadData(Capture) to see if pin
> position is moving or not.
>  Is there a need to implement notification callback of
> get pass, if yes then can anyone please give me some reference for the
> implementation of these notification callback ? What exactly happens when
> request of IOCTL_KS_WRITE_STREAM IRP comes ?.
> It seems like you don't really have a good understanding of how your
> driver is connected.  The port class driver handles all of those ioctls for
> you, and turns them into method calls in your driver.  IOCTL_KS_RESET_STATE
> becomes a call to IMiniportWaveCyclicStream::SetState, which you are
> already handling.
> How much have you modified the sample code?  Is it possible you aren't
> returning the IDmaChannel object from NewStream?
> --
> Tim Roberts, timr@xxxxxxxxx
> Providenza & Boekelheide, Inc.

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