[alsa-devel] [PATCH 1/2] ALSA: usb-audio: ignore delay calculation for capture stream

Pierre-Louis Bossart pierre-louis.bossart at linux.intel.com
Mon Nov 26 22:05:45 CET 2012

>>> It doesn't make sense to calculate the delay for capture streams in
>>> the current implementation.  It's always zero, so we should skip the
>>> computation in snd_usb_pcm_pointer() in the case of capture.
>> Shouldn't we add support for delay on the capture path instead? We could
>> use the same frame counter to report the delay and resync when the urb
>> is retired.
> Sure, it must be possible like that way.
> Wouldn't you like to volunteer? ;)

Sounds like a good skunkworks for the end of the year...If we have both 
HDA and USB behaving correctly on delays, this would raise the bar for 

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