[Bug 46918] Call of Duty: Black Ops crashes when using FAudio

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=46918

Paul Gofman <gofmanp at gmail.com> changed:

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                 CC|                            |gofmanp at gmail.com

--- Comment #8 from Paul Gofman <gofmanp at gmail.com> ---
Created attachment 66683
  --> https://bugs.winehq.org/attachment.cgi?id=66683
PoC hack for FAudio

I've tested the game.

Unlike somewhat similar looking problem in Bug #46725 where the game's xapos
were ignoring buffer sizes provided in _LockForProcess, this game is mindful
about these parameters. But unfortunately it gets zero MaxFrameCount for the
problematic xapo. Then it overwrites some data in xapos's _Process function and
things go weird.

This happens probably because the voice's number of samples is not initialized
at voice creation, this is done later. Application sets effect chain before
number of samples is initialized for the voice.

The attached proof of concept hack is fixing the issue for me. Please note that
the correct value of 480 (for audio frequency present in game) is important, if
I set 512 there the game crashes as well, so it is sort of dependent on Bug
#46725.

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