[wdmaudiodev] Re: AVStream virtual audio driver: different sound quality dependently on the number of CPU cores.
- From: "alexander ivash" <elderorb@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Sun, 24 Jul 2016 17:30:59 +0300
Your framing structure is basically just a suggestion. There is a
negotiation between the elements of the graph, but ultimately the graph
controller (the Audio Engine, in this case) makes the final decision.
It might be interesting for you to do some cycle-counter timings to see
if your callbacks are happening with sufficient regularity. Having a
10ms timer is problematic because that's shorter than the normal
scheduler interval.
—
Well, it seems to be working fine so far. But if it wouldn't work, I'm not
sure what is the best approach then... If it is not possible to force
custom framing, let say 4 times bigger frame than standard one then do I
understand correctly that it might be required to calls
KsAttemptProcessing from slower-than-10ms DPC several times (for example,
for 40ms DPC and 10ms frame there should be 4 calls of
KsAttemptProcessing?).
Probably this can be solved more correctly in pin-centric approach, but I
just want to ensure I fully understand how can it be workarounded for
filter-centric. Based on what I read KsAttemptProcessing is filter-centric
way, and stream pointer manipulations is pin-centric way.
Regards, Alexander
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