[wdmaudiodev] Re: Clock Problems
- From: "Sam Tertzakian" <thatsamiam@xxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 14 Sep 2004 19:53:50 +0000
Hi,
I never have been able been able to get an answer to this question.
I don't know what else to say. I wish I could be more help.
I wish that some one at MS would either disprove what I am saying (tell me
what I am doing wrong), or give us an explanation about why such behaiour
happens, or just admit that it is a known flaw.
As of now, I have heard nothing.
----Original Message Follows----
From: "David A. Hoatson" <dhoatson@xxxxxxx>
Reply-To: wdmaudiodev@xxxxxxxxxxxxx
To: <thatsamiam@xxxxxxxxxxx>, <wdmaudiodev@xxxxxxxxxxxxx>
Subject: [wdmaudiodev] Re: Clock Problems
Date: Fri, 10 Sep 2004 14:30:02 -0700
Hello,
I noticed your post on the WDM Audio Dev list server from *way* back, and
wondered if you ever got a reply from Microsoft?
I have noticed that after going though a repeated pause/restart condition
multiple times, WDM eventually stops sending audio (it still sends buffers,
but they are all silence). This happens with pretty much every driver I
have tested (including the AC97 sample driver), so I am pretty sure this is
a problem with WDM and not the driver. Has anyone else seen this problem or
have a fix?
Thank you,
David
----- Original Message ----- From: "Sam Tertzakian" <thatsamiam@xxxxxxxxxxx>
To: <wdmaudiodev@xxxxxxxxxxxxx>
Sent: Friday, January 23, 2004 11:19 AM
Subject: [wdmaudiodev] Clock Problems
Hi,
I have noticed that if I use GraphEdit to conntect the capture pin of an
audio device to the render pin of the same audio device and run the stream
everything is fine until I pause and then restart. After I restart the
render clock slows down from 44100 to 43488. I have tried with a couple of
audio cards and I have the exact same result.
I check by opening the Filter Properities Advanced tab in the "Slaving
Info" box.
Ordinarily, I would not have noticed this.
But, it really becomes a problem when I am trying to render video
synchronized with audio directly from a capture pin of a video filter.
The video renderer uses the master clock indicated by windows, but after a
pause and restart, the clock slows down and the render is forced to slow
down such that its rate of consuming buffers is less than that of capture.
Eventually the renderer has all the buffers and the capture stream is
starved.
I don't see a solution for this...Why does the clock rate slow down from
44100 to 43488?
_________________________________________________________________
Let the new MSN Premium Internet Software make the most of your high-speed
experience. http://join.msn.com/?pgmarket=en-us&page=byoa/prem&ST=1
******************
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.de/
******************
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.de/
******************
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.de/
Other related posts:
