http://bugs.winehq.org/show_bug.cgi?id=9358
--- Comment #20 from Raymond superquad.vortex2@gmail.com 2010-04-02 07:10:48 --- (In reply to comment #19)
If you set realtime priority, and really want the lowest latency wine doesn't officially support it. But these settings would help:
int ds_snd_queue_max = 10; int ds_snd_queue_min = 6; int ds_snd_shadow_maxsize = 2;
Change to 4, 4, and -1 in dsound_main.c
in primary.c you have a function called DSOUND_fraglen, change it to return 256 instead of 512
That's probably about as low as it can get, tinkering with DSOUND_fraglen and ds_snd_queue_max is the only way to go lower than 90ms, but it's not officially supported. So do this at your own risk
For ALSA , the period_size of those PCI sound cards are multiple of PCI brust size , wine seem to use period_time of 10ms but those wave file are usually 22050 Hz or 44100 Hz ( multiple of 3 )
Seem like those numbers in DSOUND_Fraglen are magic number