[pulseaudio-discuss] [PATCH 3/4] move streams to new appeared sinks if they prefer these sinks

[Tanu Kaskinen]

On Wed, 2019-01-02 at 08:25 -0500, Joe wrote:
> On 1/2/19 7:55 AM, Hui Wang wrote:
> > On 2019/1/1 上午2:10, Tanu Kaskinen wrote:
> > > On Mon, 2018-12-31 at 20:01 +0200, Tanu Kaskinen wrote:
> > > > On Mon, 2018-11-05 at 09:47 +0800, Hui Wang wrote:
> > > > > diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
> > > > > index 63a3456e7..a2a390beb 100644
> > > > > --- a/src/pulsecore/sink.c
> > > > > +++ b/src/pulsecore/sink.c
> > > > > @@ -722,6 +722,8 @@ void pa_sink_put(pa_sink* s) {
> > > > >       /* This function must be called after the
> > > > > PA_CORE_HOOK_SINK_PUT hook,
> > > > >        * because module-switch-on-connect needs to know the old
> > > > > default sink */
> > > > >       pa_core_update_default_sink(s->core, false);
> > > > > +
> > > > > +    pa_sink_bind_preferred_stream_to_a_sink(s);
> > > > >   }
> > > > >     /* Called from main context */
> > > > > @@ -3919,3 +3921,32 @@ void
> > > > > pa_sink_move_streams_from_oldsink_to_newsink(pa_sink *old_sink,
> > > > > pa_sink *ne
> > > > >         return;
> > > > >   }
> > > > > +
> > > > > +void pa_sink_bind_preferred_stream_to_a_sink(pa_sink *s) {
> > > > "Bind" is new terminology, and I'd like to avoid introducing new
> > > > terminology if possible. Also, "preferred stream" as a term doesn't
> > > > really make sense. So some better name for the function would be
> > > > desirable, but I can't immediately think of any obvious names... The
> > > > function is about moving streams to a sink that just became available.
> > > > "Move" and "streams" should be included in the name... Maybe
> > > > "pa_sink_move_streams_to_newly_available_sink()"? I also suggest moving
> > > > it away from the pa_sink namespace, because the function operates on
> > > > streams, not on a sink.
> > > That last sentence can be objected to - the function takes the sink as
> > > an argument, so it can be said to operate on the sink. But then the
> > > verb should be something that the sink does, like "take" ("move" is
> > > something that streams do). So pa_sink_take_streams()? Or
> > > pa_sink_take_streams_that_prefer_it()? I don't know. My weak preference
> > > at this point is pa_core_move_streams_to_newly_available_sink(). It's
> > > quite descriptive, but unfortunately lacks the distinction that only
> > > those streams that prefer the newly available sink are moved.
> > > 
> > Understand what you mean here, will have a try to provide a new
> > function name and address the rest comments of this patch.
> > 
> > Thanks.
> 
> Don't know the code at all, but from a purely English standpoint, how about
> 
> "pa_sink_move_streams_to_newly_available_preferred_sink()"
> 
> if it's not too impossibly long for a name.

I'd be fine with that. It has the issue that the newly available sink
may not actually be preferred by any stream, so it's slightly
misleading, but it's nevertheless one of the better alternatives, if
not the best so far.

-- 
Tanu

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