winuae 1.6.1 in Windows 7 and WASAPI audio

[Gaula92]

Hello there, Toni

I've installed Windows 7 as you recommended me, and I'm triying to make WASAPI sound work. It's listed on my config menu, but whenever I start a config with WASAPI sound, the emulator hangs without further warning.

My card is a Realtek integrated chip, worked fine with portaudio ASIO on XP except for a minor dropout, so I installed 7 just to try WASAPI.

I'm including log and dump file, too:

[Toni Wilen]

Possible WDM-KS crash (yes, it can cause crashes during device enumeration)
I'll compile portaudio.dll without WDM-KS later today for testing.

[Gaula92]

ok, thanks Toni. I'm looking forward for that new portaudio version!

[Toni Wilen]

WASAPI-only portaudio library attached (note that I was lazy and only disabled other modes, library isn't smaller because code is still there..)

[Gaula92]

It worked, yes.
I've tried WASAPI sound, but sadly it has the same problem as ASIO:
-it pauses/stalls for a moment ever 5-10 minutes, with sound repeating. That's with 48Khz sound.
-at 22050Hz sound is unsupported. With ASIO it was supported, but caused a sound droput every 5-10 minutes.

It only happens with VSYNC on. So it's definitely VSYNC.
Thanks, Toni

[Toni Wilen]

WASAPI (and WDM-KS) is "real" Direct Sound (DirectX's DirectSound is more like InDirectSound) and they only support sound card's "native" sample rate for best possible performance (no mixing required).

Vsync: Does both WASAPI and DirectSound have identical problem?

[Mad-Matt]

Something has changed regarding vsync between 161b1 and 161b4 (only two exes i have to test).

161b1 works fine, but 161b4 has old issue where sound doesnt play at correct speed when using amiga audio at above 28000 (using delitracker 14bit player in this case). issue is in all pc sound modes (dx/al/portaudio)

There is some news on some sites that the audio layer of windows is being rewritten for windows7 since MS acknowledge they did a crap job in vista with high latency audio causing click/pops/stutters ect.

[Toni Wilen]

Originally Posted by Mad-Matt

Something has changed regarding vsync between 161b1 and 161b4 (only two exes i have to test).

161b1 works fine, but 161b4 has old issue where sound doesnt play at correct speed when using amiga audio at above 28000 (using delitracker 14bit player in this case). issue is in all pc sound modes (dx/al/portaudio)

Known problem but we are not talking about programmed modes here

There is some news on some sites that the audio layer of windows is being rewritten for windows7 since MS acknowledge they did a crap job in vista with high latency audio causing click/pops/stutters ect.

Yeah, there is post in MS's official Windows 7 blog too.

[Gaula92]

@Toni: NO, and this is VERY important IMHO: DirectSound DOES NOT have that problem.
ASIO and WASAPI have the EXACT SAME PROBLEM.

What could it be?? It's driving me insane: I've tried to isolate the cause for months now

[Toni Wilen]

Originally Posted by gaula88@hotmail

@Toni: NO, and this is VERY important IMHO: DirectSound DOES NOT have that problem.
ASIO and WASAPI have the EXACT SAME PROBLEM.

What could it be?? It's driving me insane: I've tried to isolate the cause for months now

Then the answer has been already given in some other thread: currently only directsound has "vsync adjustment".

EDIT: this will be implemented in next version (as long as it is possible with portaudio)

[Gaula92]

woho then!

It's the last feature I need in winUAE
Thanks for your hard work!

[Toni Wilen]

Portaudio does not seem to have API to get sound buffer status but I found WASAPI examples in MSDN -> there will be WinUAE "native" WASAPI sound option.. (maybe..)

[Gaula92]

It's great to hear that, Toni. Maybe it will work better than portaudio versions, wthout those desync problems.