[LAD] ALSA Sequencer timestamp on event without scheduling

Clemens Ladisch clemens at ladisch.de
Tue Sep 20 17:11:59 UTC 2016

Felipe Ferreri Tonello wrote:
> On 20/09/16 15:26, Clemens Ladisch wrote:
>> In other words: any application that does care about timestamps will
>> never see your timestamps.
> Yes. And that's why my first question.
> How can we implement this timestamp feature in ALSA with the current
> implementation?

Not at all.

> If it is not possible, how feasible is for us to add this feature?

The ALSA sequencer API is an interface between multiple drivers and
applications.  Adding a feature to the interface will not have any
measurable effect because no other application will use it.

The time of an event is the time at which it is actually delivered.
If you want to be compatible with most other applications, you have
to deliver the events at the desired time.


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