[Bug 28723] Sound stutter in Rage when emulated windows version is set to "Windows 7" (XAudio2 -> mmdevapi sound output path)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=28723

--- Comment #127 from Jörg Höhle <hoehle at users.sourceforge.net> 2012-02-01 03:00:57 CST ---
The new render.c:test_worst_case is very useful for early disagnosis:

http://test.winehq.org/data/f0cfa7cf46d7c832fb84555529d1a1b7c49c46c0/linux_marcus-os113-945-32/mmdevapi:render.html
render.c:1587: Should play 1000ms continuous tone with fragment size 480.
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1196ms
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1201ms
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1197ms

All such machines with period sizes near 12ms will stutter in Rage if my
implementation of XAudio2 behaviour as described by Alexey in comment #19 is
correct.

I've now augmented my tests to produce audible output. My Ubuntu Intrepid
machine too has a 12ms CreateTimerQueue period and presents hiccups.

http://test.winehq.org/data/f0cfa7cf46d7c832fb84555529d1a1b7c49c46c0/linux_fg-eeepc/mmdevapi:render.html
render.c:1587: Should play 1000ms continuous tone with fragment size 480.
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
2035ms
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1648ms
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1997ms
2 seconds is completely broken.

Some machines match 10ms:
render.c:1587: Should play 1000ms continuous tone with fragment size 480.
render.c:1631: Released 48000=100x480 -480 frames at 48000 worth 990ms in
1009ms
They will stutter much less often, as 10ms events are not synchronized to wall
time (or the DAC clock).  Yet they will eventually stutter because of this
slew.
Unlike timeSetEvent, CreateTimerQueue does not take elapsed time into account
when computing the next wake-up time.

-- 
Configure bugmail: http://bugs.winehq.org/userprefs.cgi?tab=email
Do not reply to this email, post in Bugzilla using the
above URL to reply.
------- You are receiving this mail because: -------
You are watching all bug changes.