[wdmaudiodev] Re: Vista: multichannel playback
- From: Mitchell Rundle <mitchr@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 9 Jan 2007 13:03:55 -0800
I'm afraid I need to retract the second paragraph of that last reply.
To make multichannel work with Line Out, just make your handlers for
_DATAINTERSECTION and _PROPOSEDATAFORMAT (if you have one) accept formats with
WAVEFORMATEXTENSIBLE:: dwChannelMask = 0. You can set the number of channels
in the "Advanced" page of the endpoint properties in mmsys.cpl along with the
samplerate and bit-depth.
Regards,
Mitch
This posting is provided "AS IS" with no warranties, and confers no right
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Mitchell Rundle
Sent: Tuesday, January 09, 2007 11:07 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Vista: multichannel playback
What is the actual form-factor of your device? Line-outs?
You should be able to use KSNODETYPE_LINE_CONNECTOR and still do multichannel,
but you will have to constrain your _DATAINTERSECTION or _PROPOSEDDATAFORMAT
handler(s) to only do a specific number of channels. E.g. if you have 4
line-out jacks and you want to be able to do a 7.1 signal, then your
intersection handle should reject everything but 8 channel formats. Note that
for line outs it's probably most appropriate to specify a channel mask of 0
(direct out).
Does this sound reasonable or do you want the user to be able to specify which
lineout jacks are plugged in?
Regarding KSStudio... If you are able to make things work in Vista outside of
KSStudio just by changing the pin category, then you should be able to get this
working in KSStudio regardless of the pin category. Specifying a correct
WAVEFORMATEXTENSIBLE in the KSStudio "Instantiate Pin" UI is a bit tedious and
usually takes me a couple tries to get all the fields correct...
Regards,
Mitch
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 uwe kirst
Sent: Tuesday, January 09, 2007 10:52 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Vista: multichannel playback
Mitchell Rundle wrote:
>At what point are you getting this error message, when you create the pin? If
>so, what format are you using, specifically which variant of 5.1?
>
>Regards,
>Mitch Rundle
>
>
>
It seems that I must correct myself. The playback with ksstudio does not
even work under XP. But anyway the problem still exists:
Using the media player under XP I can play the file "6_Channel_ID.wav"
(download from microsoft) without any problems.
The format is:
bits per sample = 16,
samples per frame = 6,
frames per second = 44100,
cbSize = 22
Doing the same under Vista results in a 2 channel mixdown.
Today I have created a new driver version which uses KSNODETYPE_SPEAKER
instead of KSNODETYPE_LINE_CONNECTOR. With the newer Version I can play
the file, but I can not assign a individual name to my device. It's now
called "SPEAKER".
Do you know a way howto do both: Multichannel playback + my own device name?
Thanks,
/Uwe
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
Other related posts:
