[Bug 42074] osu! - Audio latency regression (ALSA)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=42074

--- Comment #7 from Ivan Molodetskikh <yalterz at gmail.com> ---
(In reply to Andrew Eikum from comment #2)
> Thanks for the report, Ivan. Could you attach a log showing the problem with
> the channels from <https://wiki.winehq.org/Sound>? Just a few seconds should
> be fine, the log will get large quickly.
> 
> Also, please attach the diff you use when gathering the log.

Attached the logs. Here's the mmdevdrv.c patch I used:

56,58c56,58
< static const REFERENCE_TIME DefaultPeriod = 100000;
< static const REFERENCE_TIME MinimumPeriod = 50000;
< #define                     EXTRA_SAFE_RT   40000
---
> static const REFERENCE_TIME DefaultPeriod = 13000;
> static const REFERENCE_TIME MinimumPeriod = 13000;
> #define                     EXTRA_SAFE_RT   8000

Note that the values are set extremely low for good comparison which produces
severe crackling in the good version.

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