[wdmaudiodev] Re: Peakmeters on Vista build 5472
- From: "Jeff Pages" <jeff@xxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Mon, 25 Sep 2006 11:46:00 +1000
Just for the record, the IAudioMeterInformation interface is working fine under
RC1 with our hardware peak meters, so whatever the bug was I was hitting with
the earlier releases, it's been fixed. Thanks guys.
Jeff
----- Original Message -----
From: Mitchell Rundle
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Saturday, August 19, 2006 3:51 AM
Subject: [wdmaudiodev] Re: Peakmeters on Vista build 5472
Jeff, you might be seeing a bug that we recently fixed. How many channels
are supported on this device? What is the speaker config set to? (goto
mmsys.cpl -> select the device -> click "Configure").
If the speaker config is not stereo, set it to stereo and see if this repros.
Thanks
Mitch Rundle
Microsoft Corp.
------------------------------------------------------------------------------
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pages
Sent: Thursday, August 17, 2006 6:13 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Peakmeters on Vista build 5472
Our sound cards provide hardware peak meters on playback and record. Using
the IDeviceTopology interface, I can find the meters and read them
successfully, but with the IAudioMeterInformation interface,
GetChannelsPeakValues returns E_INVALIDARG if I set u32ChannelCount to 2 (even
though IAudioEndpointVolume::GetChannelCount returns 2). The only way I can get
GetChannelsPeakValues to return S_OK is to set u32ChannelCount to 0, and of
course if I do that I don't get any meter readings returned.
I understand this interface will provide virtual meters if the hardware
doesn't have them, and that seems to work. Has anyone managed to get
IAudioMeterInformation to work on a device that has hardware peak meters?
Jeff Pages
Innes Corporation Pty Ltd
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