[wdmaudiodev] Re: Does MSVAD support only 1 Microphone/Output Stream
- From: swapnil kamble <swap.kamble@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 12 Feb 2009 18:35:44 +0530
Hi,
There is no need to modify MAX_OUTPUT_STREAMS. Keep it to one. Your
"Directsound:MSVAD Wave" will support the multiple streams with the help of
kmixer. So ultimately one stream only but surely will serve your purpose. I
want to know the quality of audio that you are getting. Is it crystal clear
for one to one case ?
On Thu, Feb 12, 2009 at 6:12 PM, Vipin Kumar <vipin@xxxxxxxxxxxxxx> wrote:
> 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
>
>
>
>
>
>
>
--
...Swapnil
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