[wdmaudiodev] Re: Clock Problems
- From: "Mathieu Routhier" <mrouthier@xxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 15 Sep 2004 09:46:40 -0400
Here's a tip:
If you provide *specific steps* to reproduce the bug you're describing,
using one of the sample drivers for example, you get more chances that
someone else can confirm the problem and/or that someone at MS addresses
your issue.
Mat
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Sam Tertzakian
Sent: Tuesday, September 14, 2004 3:54 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Clock Problems
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?
>
>_________________________________________________________________
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