[wdmaudiodev] Re: Associating a waveIn/waveOut device with an IMMDevice
- From: Larry Osterman <Larry.Osterman@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 21 Feb 2007 10:00:12 -0800
It's not pretty :(.
Essentially you need to send the DRV_QUERYFUNCTIONINSTANCEID and
DRV_QUERYFUNCTIONINSTANCEIDSIZE to waveOutMessage on each wave device. That
will return the endpoint name that each wave device is associated with. You
can call IMMDeviceEnumerator::GetDevice to retrieve an IMMDevice for that
endpoint.
Note that the DRV_QUERYFUNCTIONINSTANCEID API WILL fail in some cases, so don't
assume it works.
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Mike Preston
Sent: Wednesday, February 21, 2007 9:21 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Associating a waveIn/waveOut device with an IMMDevice
I saw some chatter about this on the list a while back, but it seemed to
center around access a custom interface. Does anyone have any info on
associating a waveOut/waveIn device with an IMMDevice in general? I can
enumerate through the list of MM Devices using the Core Audio APIs,
which show all the Render/Capture endpoints, and I can enumerate through
all the waveOut/waveIn devices, which only show the devices that are
available, and which always put the default device first. How can I
take an IMMDevice and determine what index to use with the
waveOut/waveIn functions to access the same endpoint?
Thanks,
Mike
--
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| Mike Preston | Home/Office: (360)756-1655 |
| E-mail: mike@xxxxxxxxxxxxxxxxxxx | Cell: (360)303-9331 |
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| 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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