From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Subject: Re: [PATCH v2] ALSA: hda - Apply codec delay to
	wallclock.
Date: Wed, 10 Apr 2013 07:29:32 -0700
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>>
>>> +       return (nsec > codec_nsecs) ? nsec - codec_nsecs : 0;
>>
>>
>> Is this correct? I would think for capture you need to add the delay, and
>> subtract it for playback?
>
> Should the capture timestamp represents the wall time when the sample
> is converted by the A-to-D?  If so, would be the correct time be the
> codec delay nsec before what is reported here?

For playback audio_timestamp = wallclk - codec_delay_in_nsec
for capture audio_timestamp = wallclk + codec_delay_in_nsec