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sink, source: Call set_mute() from mute_changed()

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This refactoring reduces duplication, as mute_changed() used to do the
same things as set_mute(). Other benefits are improved logging
(set_mute() logs the mute change, mute_changed() used to not do that)
and the soft mute state is kept up to date, because set_mute() sends
the SET_MUTE message to the IO thread.

The set_mute_in_progress flag is an extra precaution for preventing
recursion in case a sink/source implementation's set_mute() callback
causes mute_changed() to be called. Currently there are no such
implementations, but I think that would be a valid thing to do, so
some day there might be such implementation.
This commit is contained in:
Tanu Kaskinen 2014-04-15 13:56:09 +03:00
parent c93cfc1ca6
commit dbd2a8f851
4 changed files with 28 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/pulsecore/sink.c
View file

@ -2207,8 +2207,11 @@ void pa_sink_set_mute(pa_sink *s, bool mute, bool save) {
s->muted = mute;
s->save_muted = save;
if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->set_mute)
if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->set_mute) {
s->set_mute_in_progress = true;
s->set_mute(s);
s->set_mute_in_progress = false;
}
if (!PA_SINK_IS_LINKED(s->state))
return;
@ -2252,15 +2255,17 @@ void pa_sink_mute_changed(pa_sink *s, bool new_muted) {
pa_assert_ctl_context();
pa_assert(PA_SINK_IS_LINKED(s->state));
/* The sink implementor may call this if the volume changed to make sure everyone is notified */
if (s->muted == new_muted)
if (s->set_mute_in_progress)
return;
s->muted = new_muted;
s->save_muted = true;
/* pa_sink_set_mute() does this same check, so this may appear redundant,
* but we must have this here also, because the save parameter of
* pa_sink_set_mute() would otherwise have unintended side effects (saving
* the mute state when it shouldn't be saved). */
if (new_muted == s->muted)
return;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_sink_set_mute(s, new_muted, true);
}
/* Called from main thread */