[Bug 9358] Low latency interactive buffers are not mixed properly in directsound

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=9358





--- Comment #23 from Raymond <superquad.vortex2 at gmail.com>  2010-04-06 20:14:49 ---
(In reply to comment #21)
> They are, sort of. Unfortunately alsa dmix uses power or 2 period sizes, and
> since nobody has hardware mixing I used that function to find out how big a
> period should be.
> 

the point is the period size of usbaudio is related to USB (URB) packet size

device dmix seem allow you to use any period size/period time , unfortunately
use can specified those parameters of the slave pcm of the sound cards in
.asoundrc or /usr/share/alsa/cards/*.conf

do you mean that you want to know the actual period size used by hw device ?

To achieve low latency , you have to use small period size but the minimum
period size of the sound cards are unlikely to be safe for all users with
different cpu speed , different loading

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