[wdmaudiodev] Does MSVAD support only 1 Microphone/Output Stream
- From: Vipin Kumar <vipin@xxxxxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 12 Feb 2009 18:12:40 +0530
Hi,
i am using MSVAD simple as my base for supporting 20 virtual
microphone streams ( however, only 1 device is there, different streams are
given different data based on session ID).
However, the moment i change MAX_OUTPUT_STREAMS in SIMPLE.H from it's
default value 1 to say 2 or 3, everything starts getting garbled,
the request CMiniportWaveCyclicStreamMSVAD::CopyFrom which triggers at 10
ms means 22050 Hz, 16 bit mono , equals 441 bytes per 10 ms ( when
MAX_OUTPUT_STREAMS = 1)
becomes 660 bytes and sometimes 662 bytes, ( when MAX_OUTPUT_STREAMS is
greater than 1)
my only question is,
(i) What am i doing wrong.( i have confirmed my results 5 times in a
row, by interchanging the MAX_OUTPUT_STREAMS to 4 and vice versa ) &
everytime i got the same results.
(ii) How to do it ( support multiple capture streams);
here's 1 windbg log with MAX_OUTPUT_STREAMS set to 4
MSVAD: New Format: 22050
CMiniportWaveCyclic::NewStream Stream
Timer Interval 10 Frame Size 441
MSVAD: KSSTATE_PAUSE
MSVAD: KSSTATE_RUN
660
662
660
662
660
662
660
662
660
662
660
Let me know your ideas/ solution
Thanks.
Regards.
Vipin
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