[wdmaudiodev] Re: Need help in "FAIL: Non-zero position is being reported, but the cursor is not moving!"
- From: Tsai Tzung-Dar <tdtsai1973@xxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 22 Jan 2014 22:19:11 -0800 (PST)
Hi
Most of KS Position test failed is cause by your GetPosition function do not
return right position. The Startup Latency failed means your GetPosition
function return 0 for a long time(over 15ms) since ks state change to
KSSTATE_RUN. You can reference to MSVAD sample code in WDK 7600. I have try it
before is can pass KS Position test in DTM 1.6.
By the way If you are working on a virtual audio driver, why do you need to
pass HCK test? I means you can not get WHQL certification with you virtual
audio driver, why you need to do it.
________________________________
寄件者： Gaurav Khuntale <gauravkhuntale@xxxxxxxxx>
收件者： wdmaudiodev@xxxxxxxxxxxxx
寄件日期： 2014/1/23 (週四) 1:57 PM
主旨： [wdmaudiodev] Need help in "FAIL: Non-zero position is being reported, but
the cursor is not moving!"
Hello,
I am working on a virtual audio driver which is based on WaveCyclic.During KS
Position test my driver is failing with following error,
FAIL: Non-zero position is being reported, but the cursor is not moving!.
Test Case is: Standard Streaming\Rendering Performance Tests\Startup Latency
(standard streaming).
As per my understanding, KS Position test checks the behavior of GetPosition
function. But in case of this failure, i am failed to understand what exactly
this failure means and where should i look in my driver code to solve this
failure.
Can anyone please help me to understand this failure ?
During investigation, i got to know that during the transition from KSSTATE_RUN
to KSSTATE_PAUSE state, play position should get freeze and it should unfreeze
when transition from KSSTATE_PAUSE to KSSTATE_RUN happens. But my driver was
not doing like this, so i thought this might be reason behind failure and i
made changes in my driver code according to this. But still failure remains.
Thanks.
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