[Bug 20799] Multiple games using OpenAL freezes/crashes during the startup

http://bugs.winehq.org/show_bug.cgi?id=20799

--- Comment #53 from Wylda   2010-05-07 19:20:37 ---

Hi Chris, i finally got closer to the crash and actually "fix" that crash. The
crash in console output:

fixme:dbghelp:validate_addr64 Unsupported address ffffffffb7730000
fixme:dbghelp:validate_addr64 Unsupported address ffffffffb63c0000
fixme:dbghelp:validate_addr64 Unsupported address ffffffffb6320000
...

comes from "DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)". There is a line:

snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, boundary);

and when i comment that line out, crash is gone and game start ups normally :-)
Unfortunately this fixes only Mirror's Edge.

Unreal Tournament still crashes, and the workaround "set openal32 to native" is
still needed.

I wanted to look inside snd_pcm_sw_params_set_silence_threshold(), but
unfortunately i did not find it in wine's sources, so i guess, that this
function comes with ALSA or OpenAL?