From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre-Louis Bossart Subject: Re: [PATCH v4 05/10] ALSA: core: selection of audio_tstamp type and accuracy reports Date: Sat, 31 Jan 2015 14:01:37 -0600 Message-ID: <54CD34A1.8080303@linux.intel.com> References: <1422662163-7391-1-git-send-email-pierre-louis.bossart@linux.intel.com> <1422662163-7391-6-git-send-email-pierre-louis.bossart@linux.intel.com> <54CC8656.5080506@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by alsa0.perex.cz (Postfix) with ESMTP id 47A23260488 for ; Sat, 31 Jan 2015 21:01:21 +0100 (CET) In-Reply-To: <54CC8656.5080506@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: "Alexander E. Patrakov" , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On 1/31/15 1:37 AM, Alexander E. Patrakov wrote: > 31.01.2015 04:55, Pierre-Louis Bossart wrote: >> Audio timestamps can be extracted from sample counters, wall clocks, >> PHC clocks (Ethernet AVB), on-demand synchronized snapshots. This >> patch provides the ability to report timestamping capabilities, select >> timestamp types and retrieve timestamp accuracy, if supported. >> Details can be found in Documentations/sound/alsa/timestamping.txt > > I think that it is a good idea to add some example ./audio_time output > on a card that is neither HDAudio nor USB audio (i.e. a card not > specifically touched by your patches), so that the fallback behavior is > known. I didn't change the USB behavior, only fixed the way the trigger_tstamp is found, and yes it shows what the fallback is. And the documentation is already quite long, I wonder how many people will read it to the end without falling into a deep coma ;-)