[wdmaudiodev] Re: HCK for Windows 8.1 and USB Audio Class 2 devices
- From: Tsai Tzung-Dar <tdtsai1973@xxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 18 Jul 2014 00:27:35 -0700
Hi
Why you have multi-client? You should only have one endpoint client per
interface. Do you have ASUS's USB product? ASUS Essence one/STU is a UAC 2.0
DAC the driver can pass HCK 2.0 and HCK 2.1 test. ASUS Essence one/STU driver
is use MiniportCyclic. If you have ASUS Thunderbolt Sound it also UAC 2.0
device but use AVStream and MiniportWaveRT, and it can pass HCK 1.6 and HCK 2.0.
________________________________
寄件者： Franz Detro <franz.detro@xxxxxxxxxxxxxxxxxxxxx>
收件者： wdmaudiodev@xxxxxxxxxxxxx
寄件日期： 2014/7/18 (週五) 3:00 PM
主旨： [wdmaudiodev] Re: HCK for Windows 8.1 and USB Audio Class 2 devices
Hi,
Hi
>Yes, I had success pass HCK 2.1 test by use MiniportWaveCyclic.
with a USB Audio Class 2(!) device? How did you solve the problem that the data
arrives only every 1 - 8 ms (depending on the size of the isoc URBs)? How did
you solve the problem that the USB stack introduces significant jitter to the
isoc URB completition? Both problems cause failures in the KS position and
jitter tests for me.
And I also had use MiniportWaveRT and AVStream to pass HCK 2.0 test before. I
guess some of HCK filter is expired. You need check with MS to make sure it.
By the way what UAC 2.0 chip you used?
>What do you means the startup time limitation?
In my implementation, the isoc USB data stream is only started if there is at
least one client streaming. This is to avoid unnecessary system load and poor
battery life in the case the device is only connected to the computer, but not
really in use.
This should not be limitation. I had test UAA in HCK 2.0 there is not item can
not pass.
>
>
Thanks again for your input.
BR,
>Tzung-Dar Tsai
>
>
>
>________________________________
> 寄件者： Franz Detro <franz.detro@xxxxxxxxxxxxxxxxxxxxx>
>收件者： wdmaudiodev@xxxxxxxxxxxxx
>寄件日期： 2014/7/17 (週四) 3:06 PM
>主旨： [wdmaudiodev] Re: HCK for Windows 8.1 and USB Audio Class 2 devices
>
>
>
>Hi,
>
>
>Hi
>>What miniport you use for your USB Audio Class 2 driver? If you use
>>MiniportWaveRT or AVStream to implement your USB Audio Class 2 driver, as I
>>known you do not need any HCK filter. If you use MiniportWaveCyclic to
>>implement USB Audio Class 2 driver, the issue 3 which in your list is HCK's
>>bug.
>
>
>I am using MiniportWaveCyclic. I have seen that there is a HCK filter for this
>failure (#2946), but it seems to not work here.
>
>You should can use HCK filter to filter it. Other issue should be your
>driver's bug.
>
>
>I doubt that. IMHO it is not possible to reliably pass these KS Position
>tests, as it takes a significant (and non-predictable) time to start the USB
>audio stream and the audio data arrives in bunches worth 1 - 8 ms (due to the
>design of USB 2 isoc transfers).
>
>In my experience most of HCK filter for USB Audio Class 1 driver is only for
>inbox UAA. If you implement a customer driver for USB Audio Class 1 device,
>you still need to pass those test.
>
>
>But this is exactly my point: the inbox USB Audio Class 1 driver is not able
>to pass this tests (due to the nature of USB audio streaming) and therefore
>the failures are filtered for simple USB Audio Class 1 devices that use this
>inbox drivers. I could now try to implement lots of weird workarounds to
>somehow cheat the test suite, but this will most probable break the driver for
>normal operation.
>
>In my experience you just need to let you USB Audio Class 2 device action as
>HDA device, then you can pass HCK 2.1 test.
>
>
>Did you ever succeed doing this for a USB Audio Class 2 device with your own
>driver? If yes, which PortCls model did you use and how did you workaround the
>USB specific limitations on startup times and data arrival jitter / buffer
>sizes?
>
>
>Thank you,
>Franz
>
>
>
>
>
>
>>
>>
>>________________________________
>> 寄件者： Franz Detro <franz.detro@xxxxxxxxxxxxxxxxxxxxx>
>>收件者： wdmaudiodev@xxxxxxxxxxxxx
>>寄件日期： 2014/7/16 (週三) 6:54 PM
>>主旨： [wdmaudiodev] HCK for Windows 8.1 and USB Audio Class 2 devices
>>
>>
>>Hi,
>>
>>has anybody on the list experience with getting a USB Audio Class 2 device
>>with a propietary driver pass the audio device tests in HCK for Windows 8.1?
>>
>>I am seeing a number of severe issues here with some of the tests:
>>
>>(1) KS Position tests do fail due to startup timing and jitter issues
>>(2) Lullaby test does fail due to startup / shutdown issues on the USB isoc
stream
>>(3) General Audio test fails (on Windows 7 only) due to a failure IOCTL\KS
>>defined\IOCTL_KS_WRITE_STREAM\Cancel IO test
>>
>>Some research in the HCK filter database shows that there are filters for
>>such issues for the inbox USB Audio Class 1 driver (and the Bluetooth audio
>>stack), so it looks like this kind of problems is known to Microsoft.
>>
>>Can anybody shed some light here?
>>
>>Thank you very much in advance!
>>
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>
>
>
>
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