1

Topic: Audio driver on MS Win 10 1703

There is at me an audio the driver fulfilled on the basis of Microsoft Virtual Audio Device (MSVAD) of an example from . Anybody worked years 5 without censures, a nose there did not put. But after output MS Win of 10 1703 versions of the beginnings  on this OS. Walked on all chain of the audiochannel, defined  in this driver.  shows many errors on an input of this driver. In the column I change the driver for standard rendering, all perfectly works. On Google looked - similar it not only at me at problems. Who already faced it - prompt where to dig?

2

Re: Audio driver on MS Win 10 1703

Hello, Vicul, you wrote: V> There is at me an audio the driver fulfilled on the basis of Microsoft Virtual Audio Device (MSVAD) of an example from . MSVAD times XP/Win7 enough curve - it even to requirements MS of that time does not correspond to much, and tests WLK/HCK completely does not transit. It is possible or take for a basis source codes from last WDK, or to fill on your driver with tests, and to look, where jambs. But keep in mind that some tests too oblique - them do not transit even native drivers from MS with signature WHQL. It, by the way, to a question on sense of WHQL-testing.

3

Re: Audio driver on MS Win 10 1703

I eat> MSVAD times XP/Win7 enough curve - the Curve, not with a curve, and 5 years worked with  to 10 I eat> It is possible or to take for a basis source codes from last WDK, it is More than anything and does not remain, as it. A similar situation at me was on AVStream to the driver. Too on the first 10 Windows ceased to work, updated the code with last , all became a bundle

4

Re: Audio driver on MS Win 10 1703

V> On Google looked - similar it not only at me at problems. Who already faced it - prompt where to dig? A problem found, driver MSVAD not completely transfers the accepted audio the data. Approximately it turns out so, through CopyTo () it accepts 1920, and gives through CopyFrom () hardly less than ~1700 byte. In an Internet (https://social.msdn.microsoft.com/Forum … ?forum=wdk) the people say that the driver has not time to form trades for audio transmission on an output. As an output, suggest to organize transmission at level IRP. I so understand it is necessary to catch IRP procedures of end from the filter () which behind the driver accepts this audio the data. It it is possible to do all through IoSetCompletionRoutine () which generates end procedure that signs necessary IRP from that filter. And further we unpack IRP, we find this buffer of reception and its size, further we fill this buffer. That all it to launch I can not define PDEVICE_OBJECT this filter in any way. In DirectShow all it became through . . Here, in a kernel, I can not define, how to it to reach. Who can prompts?

5

Re: Audio driver on MS Win 10 1703

Hello, Vicul, you wrote: V> the people tell It not "people", and separately the taken person. V> that the driver has not time to form trades for audio transmission on an output. What is "to form trades for audio transmission"? V> As an output, suggest to organize transmission at level IRP. Anything similar there do not offer. You Google translated, whether that? V> I so understand it is necessary to catch IRP procedures of end from the filter () which behind the driver accepts this audio the data. V> it it is possible to do all through IoSetCompletionRoutine () which generates end procedure that signs necessary IRP from that filter. V> and further we unpack IRP, we find this buffer of reception and its size, further we fill this buffer. At desire, of course, it is possible to organize all it is collective farm which will work hardly a little reliably. But it is better to provide uniformity of call Notify, of course.