Kim Therkelsen skrev 2013-02-04 11:28:
Thank you for the answer. I was afraid of that. It is important for me to
perform the downmix myself. Is there a way to accomplish this by for instance
making a LFX instead?
I think the only way to do this automagically is to use a media player
(foobar2000, VLC, MediaMonkey, Amarok etc.) that can output to a certain device (yours),
...
[wdmaudiodev] Re: Msvad pcmex, audio channel mask (Robert Bielik)
↧
↧
[wdmaudiodev] Re: Msvad pcmex, audio channel mask (Kim Therkelsen)
What if the stereo stream started first? In my case it could be okay to
always receive 8 channels as long as some meta-information tells the audio
driver which of the channels are in use, for instance stereo signals would
only fill data in the left and right front channels. In the case where the
stereo stream started before the 7.1 stream, the meta-information should
change/update when the 7.1 stream starts so that the driver knows all the
channels are in use. There are probably many pitfalls I don't know about and
probably some very good reasons it works the way it does today. The things I
have read about the pre-mix render sAPO, LFX, makes me think that it is the
solution i need.
...
↧
[wdmaudiodev] Re: Msvad pcmex, audio channel mask (Robert Bielik)
Kim Therkelsen skrev 2013-02-04 20:41:
Is there any way I can install an LFX APO without bundling it with an audio
driver?
Ideally I just want to add my own LFX to the existing audio drivers in the
system.
Unfortunately the answer to that is a resounding NO. Microsoft policy. A bit
...
↧
[wdmaudiodev] Re: Questions about multichannel recording audio device. (Vincent Burel (VB-Audio))
Hello all,
I come back to you with my old question, where I got no real reply until
now.
Since Windows Vista, it seems the Recording device cannot provide more than
...
↧
[wdmaudiodev] Re: Questions about multichannel recording audio device. (Matthew van Eerde)
Recording devices should be able to provide more than two channels in Windows
Vista.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[] On Behalf Of Vincent Burel (VB-Audio)
Sent: Thursday, February 21, 2013 10:14 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Questions about multichannel recording audio device.
Hello all,
...
↧
↧
[wdmaudiodev] (no subject) (Andrew Sha......)
...
↧
[wdmaudiodev] Msvad stalling after resume from sleep (Jolly, DavidX M)
Hi,
I have implemented a virtual audio driver, based on the MSVAD simple example in
the SDK.
Everything seems to be working well, unless I go into a sleep state while
streaming audio in any player other than WMP. In this case, when the computer
resumes from sleep, the audio panel volume control will be frozen, and the
entire driver appears to be stalled. The computer has to be restarted in order
to fix this problem.
...
↧
[wdmaudiodev] Re: Msvad stalling after resume from sleep (ambrish dantrey)
You may want to consider implementing IPowerNotify for your miniport driver:
This way you wouldn't have to rely on application to PAUSE the stream
before going to sleep. You can do this in driver itself.
~Ambrish
On Thu, Mar 28, 2013 at 9:26 PM, Jolly, DavidX M
...
↧
[wdmaudiodev] Re: Msvad stalling after resume from sleep (Jolly, DavidX M)
Hi Ambrish,
Thanks for the quick response.
I have implemented the IPowerNotify interface and attempted to pause the stream
manually by calling SetState(KSSTATE_PAUSE). However, I'm still seeing the same
problem. I was under the impression that the kernel automatically handled
streams by placing them into a paused state prior to sleeping. Is this not true?
...
↧
↧
[wdmaudiodev] Re: Msvad stalling after resume from sleep (ambrish dantrey)
I don't think kernel is responsible for putting stream into PAUSE state
before going to sleep.
Your original post mentioned that hang doesn't occur if stream is paused
before going to sleep and resumed after coming from sleep. You should be
able to achieve this by using IPowerNotify.
If it still doesn't solve your problem, you probably need to debug and see
what exactly is causing the hang. I have used MSVAD and power transitions
worked fine.
...
↧
[wdmaudiodev] GFX APO loading/debugging (Preston Fick)
I am working on a GFX APO and I can load it on my development machine
without issues (driver loads and property page loads).
However when I put it on my test machine the APO shows up in Device Manager
with the standard Windows HD Audio driver without problem codes, but I
cannot see my System Effects property page. I rolled back to the Swap
sample and it does the same thing. I am using 64 bit for both platforms
(compiling for Windows Vista, loading on Windows 8), but the audio devices
for each platform is different.
...
↧
[wdmaudiodev] Re: GFX APO loading/debugging (Matthew van Eerde)
If you look under
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceClasses\{6994ad04-93ef-11d0-a3cc-00a0c9223196}
(that's KSCATEGORY_AUDIO), do you see your FX\0 properties which you're
setting in your .inf?
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[] On Behalf Of Preston Fick
Sent: Monday, April 29, 2013 3:24 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Cc: pffick@xxxxxxxxx
...
↧
[wdmaudiodev] Re: GFX APO loading/debugging (Preston Fick)
Hi Matthew -
Yes - that's the weird part. From the registry standpoint it looks like
everything is loading fine and all the keys/values from the INF for the APO
and it's properties are in their proper places.
I spent a lot of time debugging this tonight, and the last thing I did was
change the audio format on the stock HD Audio driver before updating with
my custom APO. After this the APO loads, the property page came up as
expected and everything works. I wouldn't expect that to be the root of a
...
↧
↧
[wdmaudiodev] Re: GFX APO loading/debugging (Preston Fick)
Hi Matthew -
It looks like this was an issue with a Debug vs Release version of the APO.
I was able to load the Debug version on the development machine after I
loaded the tools, and after further testing it looks like if I build a
release version I can put it on a fresh machine.
- Preston
...
↧
[wdmaudiodev] Re: GFX APO loading/debugging (Matthew van Eerde)
Hmm... I wonder if the issue is that you're dynamically linking a C runtime
which is not present on your test machine, preventing your module from loading.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[] On Behalf Of Preston Fick
Sent: Thursday, May 2, 2013 1:19 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: GFX APO loading/debugging
Hi Matthew -
...
↧
[wdmaudiodev] Re: GFX APO loading/debugging (Preston Fick)
Thanks Matthew -
I looked and it was the debug ATL library that was causing it. I was
confused because the sample did the same thing as my source, and this is
why. Thanks for the help!
Kind Regards -
Preston
...
↧
[wdmaudiodev] Naive beginner with only a concept: front filter to use a VST plugin. (Don Gateley)
I am here not because I am doing any development or because I have any
knowledge as yet of the subject but just to toss out an idea and see what
those who do have the knowledge think about its feasibility. If that is
committing an act of poor etiquette here I apologize in advance.
I would like a WDM front filter that is configurable to the extent of:
1) naming the path to my VST plugins directory,
2) naming a single VST plugin to insert as a filter,
3) naming a real audio device to receive the output and
...
↧
↧
[wdmaudiodev] Re: Naive beginner with only a concept: front filter to use a VST plugin. (Tim Roberts)
Don Gateley wrote:
I would like a WDM front filter that is configurable to the extent of:
1) naming the path to my VST plugins directory,
2) naming a single VST plugin to insert as a filter,
3) naming a real audio device to receive the output and
4) specifying parameters to the VST plugin and opening it's GUI.
In my first usage it would name and utilize the PlogueBiduleVST plugin
...
↧
[wdmaudiodev] Re: Naive beginner with only a concept: front filter to use a VST plugin. (Don Gateley)
Thanks, Tim. I understand the need for an integrated, but simple, VST host
that uses the Steinberg API for this. My reason for wanting a
driver/device interface is not to do any low level kernel processing but
simply to give a user a familiar way to direct output to a DSP filter via
the Windows Sound control panel and to configure the plugin and real
output device via it. Is there a path to such a driver interface that
doesn't involve kernel mode (other than perhaps as a hidden bridge)? I
clearly misdirected my query. Can you suggest a forum or list more
appropriate?
...
↧
[wdmaudiodev] Away from my desk (Autoresponder)
I am away from my desk Wednesday, 5/8/2013. I will get back in the office on
Thursday 5/9 and will respond then.
******************
WDMAUDIODEV addresses:
Post message:
Subscribe:
Unsubscribe:
...
↧
