[wdmaudiodev] Re: Creating threads with high priority in APO
- From: Matthew van Eerde <Matthew.van.Eerde@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 17 Dec 2014 20:51:02 +0000
Have the new thread register with the Multimedia Class Scheduler Service. This
is the same thing that AudioDG.exe does for the APOProcess(…) thread.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms684247(v=vs.85).aspx
MMCSS will give the thread regular boosts to high priority at periodic
intervals.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Dadi
Sent: Wednesday, December 17, 2014 12:45 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Creating threads with high priority in APO
Hi,
We are trying to improve our APO processing performance by creating additional
threads and then do parallel processing for some of our effects. However we
found that the highest priority we can have for new threads we created (using
CreateThread) is base priority 15 while the base priority of the main
processing thread is 22.
Unfortunately we cannot use the new threads if they will not have priority at
least as the main processing thread, we cannot gain any benefit from them this
way so we need to create threads with priority 22 or more.
How can this be achieved?
Thanks,
Dadi
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