[PATCH v2] mf/sar: Process the queue as soon as a sample is available.

[Giovanni Mascellani]

Sorry, forgot to mention that this supersedes 208050 (but it doesn't 
supersede 208051).

Giovanni.


Il 22/06/21 12:13, Giovanni Mascellani ha scritto:
> The IAudioClient implementation from both Windows and winepulse.drv
> never sets the event more than once per period, which is usually
> around 10 ms long. Some codecs produce audio samples shorter than
> 10 ms, which currently result into the SAR not being able to keep
> up with the audio client, because the SAR never requests more than
> a sample per event cycle.
> 
> This patch causes the event to be set each time a sample is received;
> this way the queue is immediately processed, and if required a new
> sample is immediately requested, instead of having to wait for the
> next IAudioClient period.
> 
> Of course it would be even better if the codecs didn't generate
> too short samples, because they uselessly require more CPU cycles,
> but we should handle them properly anyway.
> 
> This patch fixes audio stuttering problems in the logo videos
> of Borderlands 3, Deep Rock Galactic and Mutant Year Zero.
> 
> Signed-off-by: Giovanni Mascellani<gmascellani at codeweavers.com>
> ---
> v2: Remove some changes that didn't really help the solution and
> update the description accordingly.