[wdmaudiodev] Re: Vista and AC3
- From: "Cheng-mean Liu (SOCCER)" <soccerl@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 3 Jan 2007 09:55:13 -0800
Hi Philip:
You can try the following ks topology in the same filter.
PCM----->Vol-->Mute------------------------>pin 0
AC3 ---->Vol(if it's supported)--->mute---->pin 1
(Don't use and sum node to combine both streams before reaching output pins,
which might confuse mmdev's Topology parser)
Thanks.
Cheng-mean
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Philip Lukidis
Sent: Wednesday, January 03, 2007 8:39 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Vista and AC3
Hello. I'm trying to get portcls wavecyclic based subdevices (S/PDIF optical
and coax) to expose both PCM and AC3 dataranges simultaneously on the same pin
factory on Vista (unlike XP, where I do not attempt this). So far I'm not
having any luck; only PCM or non-PCM appear simultaneously in KS Studio.
My rationale for trying this is because unlike XP, when a pin factory exposes a
non-PCM format, it is displayed as an audio device in the audio CPL. This is
quite useless as far as I can see, because there is no configuration a user may
do. So I'm left with a situation where there are two devices shown in the
audio CPL for each S/PDIF subdevice, where only one of them is configurable.
Is there a way to expose both AC3 and PCM dataranges on the same pin factory,
or, failing that, to hide the non-PCM device in the audio CPL (unless there is
a reason for it appearing there)?
thank you,
Philip Lukidis
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