[wdmaudiodev] Re: KSEVENT_PINCAPS_FORMATCHANGE - bug in win8 control panel?
- From: Neetu Sand <neetu.freelist@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Mon, 1 Oct 2012 17:21:37 +0530
Edit: Driver returns STATUS_NO_MATCH for 44.1 formats.
On Mon, Oct 1, 2012 at 2:46 PM, Neetu Sand <neetu.freelist@xxxxxxxxx> wrote:
> 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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