[Bug 30071] Need a CreateTimerQueueTimer that is stable over time

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=30071

--- Comment #1 from Jörg Höhle <hoehle at users.sourceforge.net> 2012-03-04 01:17:59 CST ---
Created attachment 39178
  --> http://bugs.winehq.org/attachment.cgi?id=39178
Stabilize CreateTimerQueue

With the patch in place, mmdevapi:render:test_worst_case is right on time and
produces no audio glitch:
render.c:2152: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1001ms
render.c:2098: Should play 1000ms continuous tone with fragment size 480.
render.c:2152: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1000ms
render.c:2098: Should play 1000ms continuous tone with fragment size 480.

Note that this happens despite this particular system's inability to trigger on
10ms boundaries.  It seems to know only multiples of 4ms:
  9.309:alsa_write_data pad: 1132
  9.317:alsa_write_data pad: 1229
  9.329:alsa_write_data pad: 1133
  9.337:alsa_write_data pad: 1229
  9.349:alsa_write_data pad: 1133
  9.357:alsa_write_data pad: 1228
The winealsa feeder algorithm was designed to accommodate such variation by
hiding a few periods from GetCurrentPadding's sight.

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