[Bug 29359] DSOUND_BufPtrDiff: Assertion `ptr1 < buflen' failed.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=29359

--- Comment #15 from Andrew Eikum <aeikum at codeweavers.com> 2012-02-13 15:43:33 CST ---
This is a problem of our buffer size calculations in dsound, like described in
Bug 14717, comment 260. PES uses 8 channel audio, causing large frame sizes
(nBlockAlign = 16). In DSOUND_fraglen, we calculate the fragment length to be
512 * 16 = 8192. We prebuffer 10 fragments (= 81920 bytes) into mmdevapi, but
the buffer size is defined to be 65536. So, we don't have enough buffer space
to even hold our 10 prebuffered fragments.

Since we're in code freeze, I'm probably not going to submit a patch for this
(fixing dsound isn't trivial). You can work around the problem by opening
regedit and setting:

[HKCU\Software\Wine\DirectSound]
HelBuflen=131072 (Decimal)

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