[wdmaudiodev] Re: APOProcess is not getting called after LockForProcess
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 17 May 2019 11:09:00 -0700
Rajendra Sethi wrote:
I am testing my apo dll which I made changes using swapapo dll code.
I facing issues in some of the microsoft surface devices where
APOProcess is not getting called after LockForProcess for MFX. Some
devices it's calling perfectly.
My assumption is somewhere some other apo dll's EFX got registered
which is causing this issue.
Is there any option to disable the EFX for other APO dll.
I'm going to rant for a bit; nothing personal.
This is EXACTLY why the audio subsystem was redesigned for Vista, and
why the rules on distributing and installing APOs are so draconian.
Everyone thinks their clever little audio tweak is the most important
one, and ought to top of the list. It was this kind of thinking that
polluted the pre-Vista audio environment with myriad cute filter drivers
competing for bandwidth that made predictably latency impossible, and
now we're getting right back into the same situation. Most audio
enhancements should be part of an application that knows what's being
done, not system-wide and anonymous.
Theoretically, if the rules were being followed, there wouldn't be any
APOs you didn't install. Your APO is supposed to be part of the driver
package, after all, as are all of the other APOs. You ought to be able
to poke in the registry to figure out if there are other APOs installed.
**
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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