[pulseaudio-discuss] [PATCH 04/15] sink, source: Return early from set_mute()

[Tanu Kaskinen]

This avoids redundant set_mute() callback calls.

Some logging was added too.
---
 src/pulsecore/sink.c   | 13 +++++++++----
 src/pulsecore/source.c | 13 +++++++++----
 2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
index 38b5052..c708774 100644
--- a/src/pulsecore/sink.c
+++ b/src/pulsecore/sink.c
@@ -2199,16 +2199,21 @@ void pa_sink_set_mute(pa_sink *s, bool mute, bool save) {
     pa_assert(PA_SINK_IS_LINKED(s->state));
 
     old_muted = s->muted;
+
+    if (mute == old_muted) {
+        s->save_muted |= save;
+        return;
+    }
+
     s->muted = mute;
-    s->save_muted = (old_muted == s->muted && s->save_muted) || save;
+    s->save_muted = save;
 
     if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->set_mute)
         s->set_mute(s);
 
+    pa_log_debug("The mute of sink %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
-
-    if (old_muted != s->muted)
-        pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 }
 
 /* Called from main thread */
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index 29e312a..709a297 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -1792,16 +1792,21 @@ void pa_source_set_mute(pa_source *s, bool mute, bool save) {
     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 
     old_muted = s->muted;
+
+    if (mute == old_muted) {
+        s->save_muted |= save;
+        return;
+    }
+
     s->muted = mute;
-    s->save_muted = (old_muted == s->muted && s->save_muted) || save;
+    s->save_muted = save;
 
     if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
         s->set_mute(s);
 
+    pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
-
-    if (old_muted != s->muted)
-        pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 }
 
 /* Called from main thread */
-- 
1.8.3.1