Thanks again all. I have now have an API and interface lib from the driver
supplier that works ok barring a few details we are ironing out. That should be
sufficient for now - unless we decide to start looking at our own UAC2 driver,
if time and budget ever permits! Or we want to try bypassing the driver for
audiocontrol purposes...
Regards to all
Mike
BTW: Tzung-Dar Tsai: this is our own multichannel audio i/o device that
implements a standard UAC2 interface, currently working fine with OSX
coreaudio. Still not quite sure why MS don't have an out the box driver for
this class though.
----- Original Message -----
From: Tsai Tzung-Dar (Redacted sender "tdtsai1973" for DMARC)
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Thursday, July 21, 2016 4:48 AM
Subject: [wdmaudiodev] Re: accessing audiocontrols on a UAC2 device on Windows
Hi Mike:
No, it only have one driver. In Windows Vista and later OSes Audio driver
contain two part, one is sAPO in user mode another is Kernel mode driver. I
think you can reference to sysvad sample code to know how to enumerate Device
Specific Node in endpoint property page. And how to implement Device Specific
node in kernel mode driver. Here is the sample code URL:
Microsoft/Windows-driver-samples
Microsoft/Windows-driver-samplesWindows-driver-samples - This repo
contains driver samples prepared for use with Microsoft Visual Studio and the
Windows Driver Kit (WDK). It contains both Uni...
檢視於 github.com Yahoo 預覽
You also can reference follow URL to use IKSControl in you endpoint property
page.
https://msdn.microsoft.com/en-us/library/windows/desktop/dd316787(v=vs.85).aspx
Then you can control your Extension unit by use IDeviceSpecificProperty to
Enable/Disable Extension Unit. And use IKSControl to send detail control to
driver and send to your device. By the way what USB Audio Class 2.0 controller
you used? Are you implement standard USB ADC 2.0 device? If you need know more
detail or you want a some thing to try you can email me.
BR,
Tzung-Dar Tsai
