[wdmaudiodev] Re: USBAudio and AVStream
- From: "Nugen" <nugen@xxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 2 Feb 2006 18:17:38 +0100
the fact is that i need a less than 10 ms latency...
Is it possible with Directshow?
thanks
----- Original Message -----
From: Tim Roberts
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Thursday, February 02, 2006 6:11 PM
Subject: [wdmaudiodev] Re: USBAudio and AVStream
Nugen wrote:
I would like to use DirectKS to access directly the usbaudio.sys
to capture audio from an external usb device.
I read about DirectKS, AVStream and audio.sys articles, but i can't find
a way to understand really how to start my application...
Does anyone can give me a link or any help to understand at a higher level
what
are the differents steps and call i have to do to find my device, and
communicate with it in that way?
If you are really just starting out, then forget about DirectKS and just
write a standard waveIn or DirectShow application to get your data. After you
get that working, you can decide whether the performance is adequate or not.
There seems to be a common but mistaken impression that DirectKS is somehow
vastly superior to the standard multimedia APIs, just like there is a mistaken
impression that code runs faster in kernel mode than in user mode. Neither
statement is true.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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