[alsa-devel] Retrieving original timestamps in dsnoop.

Jaroslav Kysela perex at perex.cz
Fri Oct 29 17:41:49 CEST 2010

On Fri, 29 Oct 2010, Pontus Oldberg wrote:

> Hello, I am working in a gstreamer based project where we are using 
> alsasrc to feed the audio pipeline. On of the things that we need to be 
> able to do is to get the monotonic timestamp from the alsalib in order 
> for our video and audio to be perfectly synchronized. This worked fine 
> until we introduced the dsnoop plug-in which creates its own timestamp 
> reference. I have played around with the dsnoop plugin and created a 
> preliminary fix that gives us the result that we want.
> I'd like to know if this looks like the way to go or if this can be 
> obtained in any other way. We are using dsnoop in order to be able to 
> create two separate audio pipelines, we don't care about stereo, just 
> simple mono streams.

Your version is a bit tricky. Could you try my version at:


 					Thank you,

Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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