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filter driver ?



 
 
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Old July 21st 06, 10:48 AM posted to microsoft.public.development.device.drivers,comp.dsp,comp.sys.ibm.pc.soundcard.misc,comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.win32.programmer.kernel
Max Paklin
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Posts: 1
Default filter driver ?

Filtering KS drivers is not documented and is not supported.
See archieves. This topic has been discussed to death in the past.

-- Max.




"Lior" wrote in message
m...
Hello guys,

My name is Lior.
I need your help with a project I am currently working on.
I need to catch sound traveling from the modems speaker phone to the
sound board (SB).
the sound is not traveling with wave-in/out commands but in a certain
driver level, cause all of the sound when a conversation is started,
is directed to the SB automatically (even when I track the number of
current active streams, with my SB monitor program, I don't see any
change in the number of streams when the call is beginning, meaning it
is all done in a lower level, so I think).
As I said, I need to capture that sound so I can decide what to do
with it - transfer it somewhere else or let it pass me to the SB.

I understand that I need to develop a filter driver, after reading
much on KS I still don't know which layer a filter driver I need. Is
it a lower level filter driver (below the functional driver) ? or an
upper filter driver (above the functional driver) ?

Please help.

p.s
I also need to simulate a mic connected to the SB.
Meaning fooling the SB that he gets sound from the mic-in jack when
actually I am transmitting to him sound from a socket.
Can that be done in the same filter driver ??

Thanks in advance,
Lior Knaany.



 




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