[wdmaudiodev] Re: how to implement a USB audio driver!
- From: hetao su <suhetao@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Sat, 31 Mar 2012 03:52:47 +0800
Thank you very much for this perfect reply.
I did spend a lot of time writing this driver. I completed a base
model of a AVStream pin-centric using USB synchronous transmission.
And I did use a lot of debugging tools as you mentioned:
KsStudio,UVCview,Bus Hound and so on. I'll be able to complete the
driver very soon,but now the last question that I have no idea to get
the nodes and I don't know how to create nodes. So that I can't create
a complete filter and I can't put the nodes and the pins are connected
together.
The USB audio device is different with the AC97 and HDA audio
device, it did not have the nodes inside. I had have written many AC97
codec drivers. You can only get the feature units descriptors form USB
audio device, such as mute, volume. So that you can control mute and
volume and so on.
But the KsStudio can show the nodes ,How it did. Without the nodes
or creating these features with nodes. I can't control mute volume
whether In the program nor in the drive.
I apologize to you waste so much time on this issue.
best wishes
suhetao
******************
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.com/
Other related posts:
