[wdmaudiodev] Re: Microphone Type
- From: "Kelly Johnson" <kjohnson@xxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Mon, 18 Sep 2006 12:30:10 -0600
Thanks Mitch. It works great!
Kelly Johnson
Sr. Software Engineer
Andrea Electronics
kjohnson@xxxxxxxxxxxxxxxxx
(801) 785-9156
_____
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Mitchell Rundle
Sent: Monday, September 18, 2006 12:05 PM
To: 'wdmaudiodev@xxxxxxxxxxxxx'
Subject: [wdmaudiodev] Re: Microphone Type
You are looking for the "form factor". The following code should do it
EndpointFormFactor formFactor;
CComPtr<IPropertyStore> spProperties;
hr = pEndpoint->OpenPropertyStore(STGM_READ, &spProperties);
if (SUCCEEDED(hr))
{
hr = spProperties->GetValue(PKEY_AudioEndpoint_FormFactor, &var);
if (SUCCEEDED(hr) && (var.vt == VT_UI4))
{
formFactor = (EndpointFormFactor)var.ulVal;
...
EndpointFormFactor is defined in mmdeviceapi.h.
Regards,
Mitch Rundle
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 Kelly Johnson
Sent: Monday, September 18, 2006 10:13 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Microphone Type
When I get the default endpoint, I need to know its type, ie Microphone vs
LineIn. I'm currently querying all the properties, but I don't see anything
that looks dependable. I can't go off the name, since this has to run in
many languages.
After querying all the properties for both the microphone and LineIn, the
only differences I saw are the name, and one other property (idx 4) that I
don't know what it is.
So the question is: Given the default capture endpoint, how do I know if
it's for a microphone or Line In?
Kelly
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