Well that was actually the problem. First I registered the APO as an MFX in
the INF. No luck. Then SFX. No luck. Then EFX. No luck.
Then as LFX and then it was loaded. This was on Windows 10. That is why I
am trying to understand what in the binary is causing Windows 10 to choose
the way it does.
Michael
Den tir. 26. mar. 2019 kl. 17.06 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
If a driver has any of the (SFX, MFX, EFX) CLSIDs registered in the FX
property store, then Windows 10 will use them.
If it has none of the three, Windows 10 will look for (LFX, GFX) CLSIDs
and use them if they are present.
If none of the five are present, then there just won’t be any APOs.
I don’t know the answer to your HCK question.
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx>
on behalf of Michael Johansen <johansen.mic@xxxxxxxxx>
*Sent:* Tuesday, March 26, 2019 9:00:56 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Re: MFX APO on 7.1 endpoint
OK. The documentation is not very clear on what determines that.
Implementation of IMiniportAudioSignalProcessing?
Another short question: is it still possible to run HCK testing and
submissions for Windows 7 and 8.1 or should I just forget about it?
Regards,
Michael
Den tir. 26. mar. 2019 kl. 15.51 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
Windows 7 only supports LFX and GFX.
Windows 10 supports SFX, MFX, and EFX. If a driver reports both (LFX,
GFX) and (SFX, MFX, EFX) then Windows 10 will prefer (SFX, MFX, EFX.)
For compatibility reasons, if a driver reports only (LFX, GFX), Windows
10 will work with it.
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <
wdmaudiodev-bounce@xxxxxxxxxxxxx> on behalf of Michael Johansen <
johansen.mic@xxxxxxxxx>
*Sent:* Tuesday, March 26, 2019 4:58:17 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Re: MFX APO on 7.1 endpoint
Thanks Matthew.
It turns out that if I attach the APO as an LFX (on windows 10) it works.
The driver is a WinRT driver but built for compatibility with Windows 7.
I was under the impression that SFX, MFX and EFX are the only APOs
available in Windows 10 and not LFX and GFX.
Do you know that properties of the driver determines this?
Michael
Den man. 25. mar. 2019 kl. 22.06 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
No, it should just work.
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <
wdmaudiodev-bounce@xxxxxxxxxxxxx> on behalf of Michael Johansen <
johansen.mic@xxxxxxxxx>
*Sent:* Monday, March 25, 2019 9:15:16 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] MFX APO on 7.1 endpoint
I am working on a PortCls driver for a 7.1 audio device. We have an
existing working APO that we have modified to support 7.1 audio. I am
registering the APO via the driver INF - business as usual - but it never
gets loaded when playing audio.
Any special registration required for this type of endpoint?
Best regards,
Michael
