[wdmaudiodev] Re: PC Audio Capture
- From: Sushma <sushma.yella@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 8 Jan 2010 18:21:43 +0530
Thanks for the replies.
>
> That suggests a misunderstanding or misconfiguration on your part. You
> should be getting the audio in its final form before it goes to the
> sound card.
I'll try out and see if I'm missing any configuration.
> One option is to use a virtual audio device, like the one here:
> http://software.muzychenko.net/eng/vac.html
> This creates a new audio device which applications can write to. The
> output of that virtual device is inside an application, which can do
> whatever it wants, including forwarding the audio on to real hardware.
If i use a virtual audio device how do i redirect the data coming from
application (say a Media Player) to virtual audio. Do i need to select
the default audio as the newly created virtual audio. This is not
accepted by many users.
Lets say if I achieve this, how do i forward the data to real hardware
from virtual audio.
> Pre-Vista, it is possible to insert an audio class upper filter to
> intercept the kernel streaming ioctls. It is surprisingly difficult in
> that situation to figure out what format the audio is in every case, so
> plan some frustrating test time.
>
> For WAVERT devices in Vista and later, this simply cannot be done. The
> audio engine in user-mode writes the data directly to the DMA buffer --
> there are no kernel requests to intercept.
I had run the total recorder application. The total recording
application installs a audio class upper filter for XP and Vista. How
is this possible in Vista when app is directly writing to DMA buffer?
Regards,
Sushma
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
Other related posts:
