[wdmaudiodev] Re: stereo audio input
- From: "Sam Tertzakian" <sam@xxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 23 Mar 2006 13:46:17 -0800
If you are using AVStream and you using AVSSamp as a starting point, there
is a bug in the sample that was causing strange problems for me.
I wonder if that might be your problem.
The problem is that in the Intersect handler, this line is missing:
WaveFormat -> DataFormat.FormatSize = sizeof (KSDATAFORMAT_WAVEFORMATEX);
(The line should go right above the "*DataSize = sizeof
(KSDATAFORMAT_WAVEFORMATEX);"
I reported this to MSFT already. It does not cause problems under XP, but in
Vista it causes very bad problems (if the line is not there).
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Who Cares
Sent: Thursday, March 23, 2006 9:13 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: stereo audio input
Sure I checked all these things - everything seems to be ok
>From: "Sam Tertzakian" <sam@xxxxxxxxxxx>
>Reply-To: wdmaudiodev@xxxxxxxxxxxxx
>To: <wdmaudiodev@xxxxxxxxxxxxx>
>Subject: [wdmaudiodev] Re: stereo audio input
>Date: Wed, 22 Mar 2006 14:12:15 -0800
>
>Oh, then there must be a problem with the driver. I have several drivers
>that allow a device to opened in stereo mode.
>
>I think there are three places where there could be a problem:
>
>1. Are you sure that your KSDATARANGE_AUDIO is defined properly?
>
>KSDATARANGE_AUDIO PinDataRangesStream[] =
>{
> {
> {
> sizeof(KSDATARANGE_AUDIO),
> 0,
> 0,
> 0,
> STATICGUIDOF(KSDATAFORMAT_TYPE_AUDIO),
> STATICGUIDOF(KSDATAFORMAT_SUBTYPE_PCM),
> STATICGUIDOF(KSDATAFORMAT_SPECIFIER_WAVEFORMATEX)
> },
>
> 2, // Max number of channels.
> 8, // Minimum number of bits per sample.
> 16, // Maximum number of bits per channel.
> SAMPLERATE_MIN,
> SAMPLERATE_MAX
> }
>};
>
>2. Check the DataIntersection function.
>
>3. Check the SetFormat function.
>
>Check any where in your code where the number of channels is used.
>
>Those are my ideas...but, I can tell you this...For certain I have several
>drivers that open stereo input devices that are working in Vista. I think
>just knowing it works is 50% of the battle.
>
>-----Original Message-----
>From: wdmaudiodev-bounce@xxxxxxxxxxxxx
>[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Who Cares
>Sent: Wednesday, March 22, 2006 1:55 PM
>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] Re: stereo audio input
>
>Well, the waveInGetDevCaps reports my devise as a mono devise (used to be
>stereo on XP) - an attempt to waveInOpen it as a stereo failes, and when I
>connected my device to a stereo renderer in the graphedit , it was still
>opened as a mono device
>
>
> >From: "Sam Tertzakian" <sam@xxxxxxxxxxx>
> >Reply-To: wdmaudiodev@xxxxxxxxxxxxx
> >To: <wdmaudiodev@xxxxxxxxxxxxx>
> >Subject: [wdmaudiodev] Re: stereo audio input
> >Date: Wed, 22 Mar 2006 13:33:27 -0800
> >
> >What application are you using to record?
> >It sounds to me like the user mode application is opening your device in
> >mono mode? Are you using Cooledit or and application that you can
> >deliberately set the format to stereo?
> >
> >-----Original Message-----
> >From: wdmaudiodev-bounce@xxxxxxxxxxxxx
> >[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Who Cares
> >Sent: Wednesday, March 22, 2006 1:28 PM
> >To: wdmaudiodev@xxxxxxxxxxxxx
> >Subject: [wdmaudiodev] Re: stereo audio input
> >
> >
> >Sorry for annoying, but I repeat my question rephrased - Is it possible
>in
> >Vista to expose a "stereo" microphone?
> >
> >
> > >From: "Who Cares" <universalkludge@xxxxxxxxxxx>
> > >Reply-To: wdmaudiodev@xxxxxxxxxxxxx
> > >To: wdmaudiodev@xxxxxxxxxxxxx
> > >Subject: [wdmaudiodev] stereo audio input
> > >Date: Tue, 21 Mar 2006 19:32:01 +0000
> > >
> > >Hi,
> > >
> > >I created the capture AVStream mini-driver and provided it with the
>data
> > >range that specifies maximum of 2 channels, but despite this fact,
> >Windows
> > >(Vista) always creates the one channel source. Is there any way to
>force
> > >Windows to create the stereo source?
> > >
> > >TIA
> > >Andrew
> > >
> > >
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