[wdmaudiodev] Re: KSPROPERTY_PIN_PROPOSEDATAFORMAT/SET is called with invalid data
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 5 Dec 2017 12:18:27 -0800
reg.wad@xxxxxxxxxxxxxx wrote:
Windows 10 (16299, 15063 and maybe earlier versions) issues several
KSPROPERTY_PIN_PROPOSEDATAFORMAT/SET property requests after IRP sink
interface arrival. Some of these requests contain obviously invalid
data.
It's not "obviously invalid data". As Matthew said, when FormatSize is
less than KSDATAFORMAT_WAVEFORMATEX, then it's not a
KSDATAFORMAT_WAVEFORMATEX, so there is no "associated" WAVEFORMATEX
structure. It could be trying to explore whether you are generically
willing to handle that particular subformat, without regard to a
specific bit rate.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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