From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Revell Subject: Re: what is trigger time? Date: Fri, 08 Oct 2004 00:08:47 -0400 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <1097208527.9372.50.camel@krustophenia.net> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Hanbiao Wang Cc: alsa-devel List-Id: alsa-devel@alsa-project.org On Thu, 2004-10-07 at 21:07, Hanbiao Wang wrote: > Hi, All > According to the ALSA documentation, the following two functions > snd_pcm_status_get_trigger_tstamp() > snd_pcm_status_get_trigger_htstamp() > are suppose to get the "trigger time". However, I can not find any > documents that explains or define the meaning of the "trigger time". > Is that the time when a whole period of samples in the buffer is ready to > be read in? Could somebody please give me a hint? Thanks a lot. > I don't have the source in front of me but I would expect this to be the time when the ALSA middle layer executed the trigger callback. This happens when a PCM is stopped, started, or paused. Lee ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl