[pulseaudio-discuss] Adding delay in order to sync soundcard with a2dp stream

[Lennart Poettering]

On Tue, 22.12.09 20:12, Tanu Kaskinen (tanuk at iki.fi) wrote:

> > Ideally we'd determine the latencies automatically. Unfortunately some
> > interfaces simply don't allow that, such as SPDIF, early HDMI, and BT
> > audio. 
> > 
> > It should be trivial to write a module for PA that simply piggybacks
> > on another sink and adds a configurable latency. However, ideally we'd
> > fix this by implementing a more generic filter framework in PA that
> > allows plugging stuff like this into an existing sink without
> > introducing an additional piggybacked sink.
> 
> For these devices that have a stable but initially unknown or wrong
> latency, wouldn't a configurable latency parameter be a more appropriate
> fix? The parameter would be just added to the latency value that the
> hardware reports (if it reports anything) and there wouldn't be need for
> a separate delay buffer.

Yes, that's the idea. Maybe eventually even have a slider in the UI
which allows you to add/subtract up to 2s or something from the
latency reported.

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net
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