[wdmaudiodev] Re: Can I identify my audio endpoint?

  • From: Mitchell Rundle <mitchr@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 31 Oct 2006 10:23:45 -0800

I see.  In this case you have 2 topology filters, so you will use EP\\0 for 
each one -- the numbering is per device interface.  Also, is your 
PrimaryLineOutTopo used for a lineout device or speakers?  The name implies 
lineout, but the settings say "speakers".  FWIW, I would probably organize like 
this:



[HdAudModel.PrimarySpeakerTopo.AddReg]
; these are properties destined for the SPEAKER PropertyStore, when it is 
created
HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
HKR,"EP\\0",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID%
HKR,"EP\\0",%PKEY_AudioEngine_OEMFormat%,1,41,00,8C,70,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71

[HdAudModel.PrimarySpeakerTopo.FxAddReg]
; these are properties destined for the SPEAKER FX PropertyStore when it is 
created
HKR,"FX\\0",%PKEY_SYSFX_Association%,,%KSNODETYPE_SPEAKER%
HKR,"FX\\0",%PKEY_SYSFX_PreMixClsid%,,%SSYSFX_PREMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_PostMixClsid%,,%SSYSFX_POSTMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_UiClsid%,,%SSYSFX_UI_CLSID%
HKR,"FX\\0",%PKEY_DisplayName%,,%SSYSFX_FriendlyName%

[HdAudModel.IndependentHeadphoneTopo.AddReg]
; these are properties destined for the HEADPHONE PropertyStore, when it is 
created
HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_HEADPHONES%
HKR,"EP\\0",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID%
HKR,"EP\\0",%PKEY_AudioEngine_OEMFormat%,1,41,00,8C,70,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71

[HdAudModel.IndependentHeadphoneTopo.FxAddReg]
; these are properties destined for the HEADPHONE FX PropertyStore when it is 
created
HKR,"FX\\0",%PKEY_SYSFX_Association%,,%KSNODETYPE_HEADPHONES%
HKR,"FX\\0",%PKEY_SYSFX_PreMixClsid%,,%HSYSFX_PREMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_PostMixClsid%,,%HSYSFX_POSTMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_UiClsid%,,%HSYSFX_UI_CLSID%
HKR,"FX\\0",%PKEY_DisplayName%,,%HSYSFX_FriendlyName%

[HdAudModel.PrimarySpeakerTopo]
AddReg=HdAudModel.PrimarySpeakerTopo.AddReg,HdAudModel.PrimarySpeakerTopo.FxAddReg

[HdAudModel.IndependentHeadphoneTopo]
AddReg=HdAudModel.IndependentHeadphoneTopo.AddReg,HdAudModel.IndependentHeadphoneTopo.FxAddReg



Regards,
Mitch Rundle
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Michael R. Preston
Sent: Tuesday, October 31, 2006 9:47 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Can I identify my audio endpoint?

OK.  That's what I thought.  I pretty much took this from the Swap APO
sample code that came with the WDK.  Here are the relevant sections from
my INF file:

===========================================================================
[HdAudModel.SSysFx.AddReg]
HKR,"FX\\0",%PKEY_SYSFX_Association%,,%KSNODETYPE_SPEAKER%
HKR,"FX\\0",%PKEY_SYSFX_PreMixClsid%,,%SSYSFX_PREMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_PostMixClsid%,,%SSYSFX_POSTMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_UiClsid%,,%SSYSFX_UI_CLSID%
HKR,"FX\\0",%PKEY_DisplayName%,,%SSYSFX_FriendlyName%
HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
HKR,"EP\\0",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID%
HKR,"EP\\0",%PKEY_AudioEngine_OEMFormat%,1,41,00,8C,70,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71

[HdAudModel.HSysFx.AddReg]
HKR,"FX\\0",%PKEY_SYSFX_Association%,,%KSNODETYPE_HEADPHONES%
HKR,"FX\\0",%PKEY_SYSFX_PreMixClsid%,,%HSYSFX_PREMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_PostMixClsid%,,%HSYSFX_POSTMIX_CLSID%
HKR,"FX\\0",%PKEY_SYSFX_UiClsid%,,%HSYSFX_UI_CLSID%
HKR,"FX\\0",%PKEY_DisplayName%,,%HSYSFX_FriendlyName%
HKR,"EP\\1",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_HEADPHONES%
HKR,"EP\\1",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID%
HKR,"EP\\1",%PKEY_AudioEngine_OEMFormat%,1,41,00,8C,70,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71

[HdAudModel.PrimaryLineOutTopo]
AddReg=HdAudModel.PrimaryLineOutTopo.AddReg,HdAudModel.SSysFx.AddReg

[HdAudModel.IndependentHeadphoneTopo]
AddReg=HdAudModel.IndependentHeadphoneTopo.AddReg,HdAudModel.HSysFx.AddReg
===========================================================================

All I did was pretty much copy-and-paste, added an "S" in front of the
Speaker entries, added an "H" in front of the Headphone entries, and
changed the SysFX Association from KSNODETYPE_ANY to KSNODETYPE_SPEAKER
or KSNODETYPE_HEADPHONE, also making sure all the strings are set up
correctly.  The above correctly populates the FX property store for both
endpoints.  However, it only populates the endpoint property store for
the Speaker endpoint.  If I change the "EP\\0" references in
HdAudModel.SSysFx.AddReg to "EP\\1", and change the "EP\\1" references
in HdAudModel.HSysFx.AddReg to "EP\\0", I see the exact reverse - the
endpoint property store for the Headphone gets populated, but not the other.

I'm really at a loss for why this would be a problem.  I thought maybe
it might be a problem with the verb tables in the BIOS on my particular
system, but given the fact that I can switch the endpoint entries, this
doesn't seem to be the cause.  Any thoughts?

Mike

Mitchell Rundle wrote:
> These registry entries belong on the topology device interface.
> Please paste what you have into email.  Maybe there's some small
> error that a second set of eyes will spot.
>
> Thanks. Mitch
>
> -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx
> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Michael R.
> Preston Sent: Saturday, October 28, 2006 1:18 PM To:
> wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: Can I identify
> my audio endpoint?
>
> Mitch, It still seems like this mechanism isn't working correctly.
> If I do as you describe, I still only see the endpoint property store
> being populated for the first endpoint.  As an experiment, I tried
> swapping the indexes, so the Speaker endpoint gets populated from
> "EP\\1" and the headphone endpoint gets populated from "EP\\0", and
> now only the headphone endpoint's property store gets populated.
> Here's a question...  Where do these entries belong in the INF file?
> In the INF file that came with the Swap APO sample code, both the
> "FX\\0" and "EP\\0" entries are populated from the topology AddReg
> section for the endpoint.  For example:
>
> [HDAudio.SysFx.PrimaryLineOutTopo]
> AddReg=HDAudio.SysFx.PrimaryLineOutTopo.AddReg,SysFx.AddReg,OEMSettingsOverride.AddReg
>
>
> where SysFx.AddReg adds the "FX\\0" entries, and
> OEMSettingsOverride.AddReg adds the "EP\\0" entries.  Is this the
> correct place to put the "EP\\xxx" entries?  It seems to be working
> fine for the first endpoint, but not for the others.
>
> Mike
>
> Mitchell Rundle wrote:
>
>> Jeff, it sounds like you have it.
>>
>> Michael, in your case only the speakers propertystore is populated
>> because of this entry:
>>
>> HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
>>
>> If you want all endpoints populated, then change that line to
>>
>> HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_ANY%
>>
>> On the other hand, let's say you want to add a different endpoint
>> propertypage extension for each of the endpoints (speakers,
>> headphones, spdif).  In this case, (as Jeff alluded to) do
>> something like
>>
>> HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
>> HKR,"EP\\0",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID_FORSPEAKERS%
>>
>>
>>
>> HKR,"EP\\1",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_HEADPHONES%
>>
>>
>> HKR,"EP\\1",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID_FORHEADPHONES%
>>
>>
>>
>> HKR,"EP\\2",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPDIF_INTERFACE%
>>
>>
>> HKR,"EP\\2",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID_FORSPDIF%
>>
>>
>>
>> I realize this is all a bit cludgey...  Basically, you are creating
>>  transient groups of registry properties that will be used by
>> something that doesn't exist at device setup time, namely the audio
>>  endpoints.  When the endpoints are "created", the
>> AudioEndpointBuilder service looks for these "EP\n" and "FX\n"
>> entries, correlates with the pin category and if there's a match
>> copies the properties into the new endpoint and fx propertystores
>> en masse.
>>
>> Let me know if this is still unclear.  I'll add to the list of
>> things that needs more documentation and/or utilities.
>>
>> Regards, Mitch Rundle Microsoft Corporation
>>
>> -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx
>> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pages
>> Sent: Thursday, October 26, 2006 4:05 PM To:
>> wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: Can I identify
>>  my audio endpoint?
>>
>> Hi Mike,
>>
>> I don't know whether what I've done is the right thing or not (this
>>  stuff doesn't seem to be documented anywhere yet apart from in the
>>  SysFx example), but I have multiple endpoints that I needed to set
>>  the default sampling rate and bit depth on, so in the
>> [OEMSettingsOverride.AddReg] section I just referred to the
>> endpoints as EP\\0, EP\\1, EP\\2, etc. and it seemed to work.
>>
>> Jeff
>>
>> ----- Original Message ----- From: "Michael R. Preston"
>> <mike@xxxxxxxxxxxxxxxxxxx> To: <wdmaudiodev@xxxxxxxxxxxxx> Sent:
>> Friday, October 27, 2006 8:45 AM Subject: [wdmaudiodev] Re: Can I
>> identify my audio endpoint?
>>
>>
>>
>>
>>> Frank, see my questions below.  I want to answer Ally's question
>>> first, then I have a question for you...
>>>
>>> In the INF file that came with the Swap APO sample code, there
>>> are examples of how to put values into both the FX property
>>> store, and the endpoint property store.  Entries to go into the
>>> FX property store get a label of "FX\\0", and entries to go into
>>> the endpoint property store get a label of "EP\\0".  The
>>> following is taken from the aforementioned INF file:
>>>
>>> ;; ;; All FX\\0 entries in the same grouping ;; [SysFx.AddReg]
>>> HKR,"FX\\0",%PKEY_DisplayName%,,%SYSFX_FriendlyName%
>>> HKR,"FX\\0",%PKEY_SYSFX_PreMixClsid%,,%SYSFX_PREMIX_CLSID%
>>> HKR,"FX\\0",%PKEY_SYSFX_PostMixClsid%,,%SYSFX_POSTMIX_CLSID%
>>> HKR,"FX\\0",%PKEY_SYSFX_UiClsid%,,%SYSFX_UI_CLSID%
>>> HKR,"FX\\0",%PKEY_SYSFX_Association%,,%KSNODETYPE_ANY%
>>>
>>> ;; ;; All EP\\0 entries in the same grouping ;; ;; Set default
>>> format to 48kHz, 16-bit, Stereo ;; Add endpoint extension
>>> property page ;; [OEMSettingsOverride.AddReg]
>>> HKR,"EP\\0",%PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
>>>
>>> HKR,"EP\\0",%PKEY_AudioEngine_OEMFormat%,%REG_BINARY%,41,00,8C,70,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71
>>>
>>>
>>> HKR,"EP\\0",%PKEY_AudioEndpoint_Ext_UiClsid%,,%AUDIOENDPOINT_EXT_UI_CLSID%
>>>
>>>
>>>
>>>
>>> The reason I'm bringing this up, is that I think there may be a
>>> problem with this mechanism.  I'm running on a system with more
>>> than one playback endpoint (Speakers, Headphones, and S/PDIF).  I
>>>  can see entries destined for the FX property store get populated
>>>  for all endpoints. However, entries destined for the endpoint
>>> property store only seem to get populated for the first (default)
>>>  endpoint.  Frank, is this a known problem?  Any comments or
>>> suggestions?
>>>
>>> Thanks, Mike
>>>
>>> Alexandra Schoepel (Ally) wrote:
>>>
>>>
>>>> Hi Frank, Regarding setting a special property to help us
>>>> locate our endpoint: as far as I can tell, the sysfx example
>>>> adds properties to the FX PROPERTIES key in the registry, but
>>>> not the 'standard' one, e.g. ..\MMDevices\Audio\Render\{DS
>>>> GUID}\Properties\ Am I missing something, or does the example
>>>> only demonstrate adding properties for the effects?  It looks
>>>> to me the only way to find the endpoint associated with an
>>>> audio driver is by the device name/description from the inf.
>>>> Thanks, Ally
>>>>
>>>> ------------------------------------------------------------------------
>>>>  *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx
>>>> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Frank
>>>> Yerrace *Sent:* Wednesday, October 18, 2006 3:53 PM *To:*
>>>> wdmaudiodev@xxxxxxxxxxxxx *Subject:* [wdmaudiodev] Re: Can I
>>>> identifying my audio endpoint?
>>>>
>>>> I'm sorry I misled you with my previous response. A colleague
>>>> reminded me that PKEY_Endpoint_KsComponentId is not generally
>>>> available in the endpoint property stores. Another alternative-
>>>>  similar in concept- is for your device INF to indirectly
>>>> populate the endpoint property stores with your own custom
>>>> properties. The SYSFX sample demonstrates this. (Sorry I don't
>>>> have a pointer to the SYSFX sample or documentation at my
>>>> fingertips. I believe it's been referenced in other messages to
>>>> this mailing list.) Then your app can search for an endpoint
>>>> that has your custom properties in its property store.
>>>>
>>>> Frank Yerrace
>>>>
>>>> Microsoft Corporation
>>>>
>>>> This posting is provided "AS IS" with no warranties, and
>>>> confers no rights.
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>>
>>>> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx
>>>> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of
>>>> *Alexandra Schoepel (Ally) *Sent:* Tuesday, October 17, 2006
>>>> 4:12 PM *To:* wdmaudiodev@xxxxxxxxxxxxx *Subject:*
>>>> [wdmaudiodev] Re: Can I identifying my audio endpoint?
>>>>
>>>> Yes it does.  Okay, very cool.  Is this key defined in a
>>>> standard header or is there a section of documentation
>>>> describing how the KSCOMPONENTID is encapsulated in the
>>>> PROPVARIANT so I don't bother you any more. :)
>>>>
>>>> Thanks again,
>>>>
>>>> Alexandra Schoepel
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>>
>>>> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx
>>>> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Frank
>>>> Yerrace *Sent:* Tuesday, October 17, 2006 3:59 PM *To:*
>>>> wdmaudiodev@xxxxxxxxxxxxx *Subject:* [wdmaudiodev] Re: Can I
>>>> identifying my audio endpoint?
>>>>
>>>> Does your device have its own audio driver? One alternative is
>>>> to read PKEY_Endpoint_KsComponentId from the endpoint property
>>>> store. This returns a KSCOMPONENTID structure. However, for
>>>> this endpoint property to have useful information, the audio
>>>> driver must support the KS property
>>>> KSPROPERTY_GENERAL_COMPONENTID and fill it in with useful
>>>> information.
>>>>
>>>> Frank Yerrace
>>>>
>>>> Microsoft Corporation
>>>>
>>>> This posting is provided "AS IS" with no warranties, and
>>>> confers no rights.
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>>
>>>> *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx
>>>> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of
>>>> *Alexandra Schoepel (Ally) *Sent:* Tuesday, October 17, 2006
>>>> 3:27 PM *To:* wdmaudiodev@xxxxxxxxxxxxx *Subject:*
>>>> [wdmaudiodev] Can I identifying my audio endpoint?
>>>>
>>>> Hi guys,
>>>>
>>>> What is the most effective way to identify one's own audio
>>>> endpoint when using the IMMDeviceEnumerator?  None of the
>>>> published Audio Endpoint properties seem to be uniquely tied to
>>>>  the device.  The DirectSound GUID (PKEY_AudioEndpoint_GUID)
>>>> seems to be a floating value assigned by the OS and in no way
>>>> tied to any information in the inf file of the driver.
>>>> Additionally, help on the IMMDevice::GetId function states that
>>>> the information it represents is opaque and should not be used
>>>> to obtain information about the device.  Any advice?
>>>>
>>>> Thanks, Alexandra Schoepel
>>>>
>>>
>>> --
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> | Mike Preston          | Home/Office: (360)756-1655 | | E-mail:
>>> mike@xxxxxxxxxxxxxxxxxxx |        Cell: (360)303-9331 |
>>> |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
>>> | The man who follows the crowd will usually get no         | |
>>> further than the crowd.  The man who walks alone is       | |
>>> likely to find himself in places no one has ever been.    | | --
>>> Alan Ashley-Pitt                       |
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>  ******************
>>>
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>>>
>>
>>
>> ******************
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>
>
> -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> |            Mike Preston          | Home/Office: (360)756-1655 | |
> E-mail: mike@xxxxxxxxxxxxxxxxxxx |        Cell: (360)303-9331 |
> |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| |
> The man who follows the crowd will usually get no         | |
> further than the crowd.  The man who walks alone is       | |
> likely to find himself in places no one has ever been.    | |
> -- Alan Ashley-Pitt                       |
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ******************
>
> WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
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--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|            Mike Preston          | Home/Office: (360)756-1655 |
| E-mail: mike@xxxxxxxxxxxxxxxxxxx |        Cell: (360)303-9331 |
|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
|     The man who follows the crowd will usually get no         |
|     further than the crowd.  The man who walks alone is       |
|     likely to find himself in places no one has ever been.    |
|                     -- Alan Ashley-Pitt                       |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
******************

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