Re: [Qemu-devel] [PATCH 2/2] audio: add -audiodev pa, in|out.latency= to documentation

[Stefan Hajnoczi]

On Tue, Sep 17, 2019 at 09:47:11PM +0200, Zoltán Kővágó wrote:
> On 2019-09-11 16:58, Stefan Hajnoczi wrote:
> > The "latency" parameter wasn't covered by the documentation.
> > 
> > Signed-off-by: Stefan Hajnoczi <address@hidden>
> Reviewed-by: Zoltán Kővágó <address@hidden>
> > ---
> > How is this parameter related to buffer-length?
> 
> Pulseaudio being a client-server architecture is a bit different than the
> other backends, plus it also has to mix multiple streams. buffer-length
> corresponds to the buffer inside qemu, while latency corresponds to
> pulseaudio.  For playback, the latency should be "maximum latency that the
> application can deal with", if a different client request a lower latency,
> our latency will decrease too.  It's up to the server to figure out an
> optimal buffer size on the server side of the things.
> For recording it's the size of the buffer we will read at a time from
> pulseaudio.

Thanks for explaining.  I will expand the help text in v2.

Stefan

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