[wdmaudiodev] Re: KSEVENT_PINCAPS_FORMATCHANGE - bug in win8 control panel?
- From: Neetu Sand <neetu.freelist@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Mon, 1 Oct 2012 14:46:27 +0530
Yes, I get calls to proposed format handler and driver returns
STATUS_NO_MATCH.
One more thing is that if I open sound and Audio CPL and change default
entry from 44.1 kHz to 96 kHz and restart Sound CPL, the 44.1 kHz entry
disappears.
On Fri, Sep 28, 2012 at 9:36 PM, Matthew van Eerde <
Matthew.van.Eerde@xxxxxxxxxxxxx> wrote:
> After you raise the “format change” event, Windows should requery your
> format support via the proposed format handler and your data intersection
> handler. If you fail all requests for 44.1 formats in your data
> intersection handler, then that should not appear in the list of supported
> formats in the Sound control panel.****
>
> ** **
>
> Can you confirm that you’re seeing calls to your data intersection handler
> and proposed format handler shortly after you raise the event?****
>
> ** **
>
> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:
> wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Neetu Sand
> *Sent:* Thursday, September 27, 2012 9:42 AM
> *To:* wdmaudiodev@xxxxxxxxxxxxx
> *Subject:* [wdmaudiodev] Re: KSEVENT_PINCAPS_FORMATCHANGE - bug in win8
> control panel?****
>
> ** **
>
> Say if I change from 44.1 kHz to 96 kHz then Sound and Audio CPL should
> show all formats related to 96 kHz.
>
> In Windows 8, it shows all formats (different bit depths) related to 96
> kHz as well it shows one entry for 44.1 kHz. This entry (44.1 kHz) is
> selected as default entry.
>
> Yes, driver is exposing preferred format in
> "PropertyHandlerProposedFormat" GET request.****
>
> On Thu, Sep 27, 2012 at 9:21 PM, Matthew van Eerde <
> Matthew.van.Eerde@xxxxxxxxxxxxx> wrote:****
>
> What were the old and new lists? What was the previously selected
> format?****
>
> ****
>
> Do you expose a “preferred” format?****
>
> ****
>
> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:
> wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Neetu Sand
> *Sent:* Thursday, September 27, 2012 4:01 AM
> *To:* wdmaudiodev@xxxxxxxxxxxxx
> *Subject:* [wdmaudiodev] KSEVENT_PINCAPS_FORMATCHANGE - bug in win8
> control panel?****
>
> ****
>
> Hi All,
>
> We have a driver that supports dynamic format changes on windows 7. I
> tried same driver on windows 8 and here is what I have observed:
>
> - When I change sample rate, Sound and audio control panel correctly
> updates the sample rate list to reflect the formats related to new sample
> rate.
> - The default selected sample rate is set to previous/last selected sample
> rate.
> - When I try to play something in media player after changing sample rate,
> Sound and Audio CPL uses old sample rate.
>
> Is this a bug in Windows 8 or has anything changed on windows 8??
>
> cheers
> Neetu****
>
> ** **
>
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