[Bug 773681] directsoundsink: High cpu usage on windows x86

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=773681

Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> changed:

           What    |Removed                     |Added
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                 CC|                            |nicolas at ndufresne.ca

--- Comment #5 from Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> ---
Wow, both the code before and after seems odd. I see that DirectSound do have a
mechanism to notify playback position reliably.

https://msdn.microsoft.com/en-us/library/microsoft.directx_sdk.idirectsoundnotify8.idirectsoundnotify8.setnotificationpositions(v=vs.85).aspx

We could use this function, or even better, implement a clock on top of that
(async timers could be scheduled this way).

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