[wdmaudiodev] Re: AVStream Audio Stop Problem
- From: æåæ <huengpei@xxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 18 Feb 2005 13:26:58 +0800
Dear DJ Sisolak:
For another problem, do you know how to solve the delay problem of Audio
Capture Device filter from driver.
The filter causes 2 ~ 3 sec. play delay.
However, the filter from WDM Streaming Capture Device is no dealy.
Can I solve it from driver? (not from software)
Why does the same filter of USB2.0 audio class driver cannot cause the dealy?
They are different?.
USB2.0 audio class driver is written by Microsoft.
If Microsoft can do it, why our avstream driver cannot do it?
Best Regards,
H.P.
----- Original Message -----
From: æåæ
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Wednesday, February 16, 2005 10:54 PM
Subject: Re: [wdmaudiodev] Re: AVStream Audio Stop Problem
Dear DJ Sisolak:
Thank you very much.
I have solved this problem.
The filter of capture sources is very strange.
It need clear all waiting processes on the StreamStop state (not StreamClose
state).
Best Regards,
H.P.
----- Original Message -----
From: DJ Sisolak
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Wednesday, February 16, 2005 2:01 AM
Subject: [wdmaudiodev] Re: AVStream Audio Stop Problem
Hello H.P.,
The first thing I would look at is to make sure that you are getting
through the pin state transitions cleanly. If you fail a state transition the
pin close will not be called.
Hope this helps,
DJ Sisolak
Microsoft Corp.
This posting is provided "AS IS" with no warranties, and confers no rights
----------------------------------------------------------------------------
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of ???
Sent: Tuesday, February 15, 2005 4:53 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Audio Stop Problem
Dear All:
I have written an audio AVStream driver.
It registers an audio capture filter into two different categories, Audio
Capture Sources and WDM Streaming Capture Devices.
The capture filter, which is in WDM Streaming Capture Devices folder, is
workable well for any operations.
However, when I use the corresponded filter within Audio Capture Sources,
there is serious problem below:
I can listen the sound from this filter, when I push the "play" button.
But, when I push the "stop" button, the graphedit will be blocked!!
The OnPinClose function cannot be called by directshow in my driver.
Can you help me?
Best Regards,
H.P.
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