On 07/06/16 07:44, Alan Young wrote:
> I'll work on developing and testing a patch for consideration before 
> coming back to the last. It will be easier to discuss the merits or 
> otherwise of my proposal with a concrete, working patch to consider.


Well, it has been a few weeks but this is what I have come up with.

It is not perfect because of the issue noted in the comments but so far 
I have not been able to discover any downside. It many (most) cases, the 
reported delay (and audio_tstamp) is more accurate than it was before. 
In other cases there is no change.

Alan.