Thanks. Will get some logs.
No sync problems.
Den tir. 2. apr. 2019 kl. 17.09 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
*scratches chin*
Please ask the testers to grab audio logs of the gap in question. A video
would help too.
Device changes aside, how is A/V sync on this APO?
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx>
on behalf of Michael Johansen <johansen.mic@xxxxxxxxx>
*Sent:* Tuesday, April 2, 2019 8:03:15 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Re: Interrupted audio when inserting USB audio
device
OK cool.
The thing here is that the active device remains default which is great
but there is a gap in the stream when a new known device is plugged in but
only when using our own APO and INF for the active device.
I know this is a bit nitty gritty but the testers focus on the "default
microsoft driver" does NOT make gaps.
Den tir. 2. apr. 2019 kl. 16.57 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
Whether the new device becomes the default is heavily dependent on the
characteristics of the old and new device. This tool is old but may shed
some light on the matter:
https://matthewvaneerde.wordpress.com/2014/03/24/troubleshooting-default-audio-device-heuristics/
<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmatthewvaneerde.wordpress.com%2F2014%2F03%2F24%2Ftroubleshooting-default-audio-device-heuristics%2F&data=02%7C01%7CMatthew.van.Eerde%40microsoft.com%7C7a75e130213e45e0f31d08d6b77c735a%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636898142495284251&sdata=Xsf81xEODjlHOB8oiBd3o%2FyEEFQZY2G2vmC3erMztaM%3D&reserved=0>
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <
wdmaudiodev-bounce@xxxxxxxxxxxxx> on behalf of Michael Johansen <
johansen.mic@xxxxxxxxx>
*Sent:* Tuesday, April 2, 2019 7:54:25 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Re: Interrupted audio when inserting USB audio
device
I know. The point here is that the playing device remains default and
active which is fine. Then when plugging in the second device a gap in the
stream appears and the current device remains default.
But is that what can be expected or...?
Den tir. 2. apr. 2019 kl. 16.48 skrev Matthew van Eerde <
dmarc-noreply@xxxxxxxxxxxxx>:
Windows is entirely free to make a newly arrived audio device the
default, even if some existing device has been explicitly set as the
default.
------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <
wdmaudiodev-bounce@xxxxxxxxxxxxx> on behalf of Michael Johansen <
johansen.mic@xxxxxxxxx>
*Sent:* Tuesday, April 2, 2019 4:31:25 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Interrupted audio when inserting USB audio
device
I have been helping a customer develop a custom SFX APO for a USB audio
device. I wrote an INF using the standard wdma_usb.inf as audio driver and
just adding FX registrations for the APO. Works fine.
Now the testing teams says that when playing audio using only the
default windows audio class driver and having made the device "default"
explicitly from the sound control panel, then if they connect a second
device audio will play uninterrupted. BUT if the device has been installed
using our own INF with our APO and playing audio and then connecting a
second device audio will be interrupted shortly (< 1 sec) and then resume.
I am not sure if there even are any guaranties for uninterrupted
playback when inserting a second audio device while playing on an
explicitly set default device?
Regards,
Michael
