[wdmaudiodev] WG: Optimal KS buffer sizes ?

  • From: "Patrick Pfeifer" <patrick_pfeifer@xxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 2 Aug 2005 08:46:43 +0200

As already asked in the question below, is there any way to get the latency
of a KS filter from the moment it is read from my render buffer? I need to
have a value for how long it takes for the streaming audio to be output
(acoustically) by the sound hardware.

Thank you!

Patrick

-----Ursprüngliche Nachricht-----
Von: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] Im Auftrag von Jerry Evans
Gesendet: Donnerstag, 24. März 2005 16:52
An: wdmaudiodev@xxxxxxxxxxxxx
Betreff: [wdmaudiodev] Optimal KS buffer sizes ?

A user is complaining that our KS audio system has around 70ms latency 
(RealTek AC97 chipset). The app has 2 buffers of between 384 and 512 
samples. The audio quality is good (no glitching) - so this figure seems 
hard to believe unless more buffering is taking place further down the 
stack. Is there any way to query the device for buffer sizes etc ? What is 
KSSTREAMALLOCATOR_STATUS all about and can it help here ?

Thx

Jerry 

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