[Bug 28622] alsa under pulseaudio no longer produce sound.

wine-bugs at winehq.org wine-bugs at winehq.org
Wed Oct 12 13:02:16 CDT 2011


http://bugs.winehq.org/show_bug.cgi?id=28622

--- Comment #3 from Andrew Eikum <aeikum at codeweavers.com> 2011-10-12 13:02:16 CDT ---
Created attachment 36857
  --> http://bugs.winehq.org/attachment.cgi?id=36857
dsound: Request a more exact buffer size from MMDevAPI

(In reply to comment #2)
> reduce the period time from 200 *10000 to 2321930 (23.2ms) in
> dlls/dsound/primary.c seem fix the choppy sound 
> 
> 200ms @44100Hz is too large (> half buffer size when your sound card only have
> 64K Bytes buffer 371ms)
> 
> 
>     /* buffer size = 200 * 100000 (100 ns) = 2.0 secods */
>     hres = IAudioClient_Initialize(device->client,
>             AUDCLNT_SHAREMODE_SHARED, AUDCLNT_STREAMFLAGS_NOPERSIST,
> -            200 * 100000, 50000, device->pwfx, NULL);
> +            2321930, 50000, device->pwfx, NULL);

That's the buffer size, not the period size. In any case, I have this patch in
my queue which does the same thing a little more intelligently. It requests the
buffer size to be exactly as large as the maximum data that dsound will send to
mmdevapi. I've attached it here, and it fixes VLC for me as well.

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