OutputInternal: use Mutex instead of GMutex

src/OutputControl.cxx

@@ -47,9 +47,9 @@ struct notify audio_output_client_notify;
 static void ao_command_wait(struct audio_output *ao)
 {
 	while (ao->command != AO_COMMAND_NONE) {
-		g_mutex_unlock(ao->mutex);
+		ao->mutex.unlock();
 		audio_output_client_notify.Wait();
-		g_mutex_lock(ao->mutex);
+		ao->mutex.lock();
 	}
 }
 
@@ -64,7 +64,7 @@ static void ao_command_async(struct audio_output *ao,
 {
 	assert(ao->command == AO_COMMAND_NONE);
 	ao->command = cmd;
-	g_cond_signal(ao->cond);
+	ao->cond.signal();
 }
 
 /**
@@ -87,9 +87,8 @@ ao_command(struct audio_output *ao, enum audio_output_command cmd)
 static void
 ao_lock_command(struct audio_output *ao, enum audio_output_command cmd)
 {
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 	ao_command(ao, cmd);
-	g_mutex_unlock(ao->mutex);
 }
 
 void
@@ -231,33 +230,28 @@ audio_output_update(struct audio_output *ao,
 {
 	assert(mp != NULL);
 
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 
 	if (ao->enabled && ao->really_enabled) {
 		if (ao->fail_timer == NULL ||
 		    g_timer_elapsed(ao->fail_timer, NULL) > REOPEN_AFTER) {
-			bool success = audio_output_open(ao, audio_format, mp);
-			g_mutex_unlock(ao->mutex);
-			return success;
+			return audio_output_open(ao, audio_format, mp);
 		}
 	} else if (audio_output_is_open(ao))
 		audio_output_close_locked(ao);
 
-	g_mutex_unlock(ao->mutex);
 	return false;
 }
 
 void
 audio_output_play(struct audio_output *ao)
 {
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 
 	assert(ao->allow_play);
 
 	if (audio_output_is_open(ao))
-		g_cond_signal(ao->cond);
-
-	g_mutex_unlock(ao->mutex);
+		ao->cond.signal();
 }
 
 void audio_output_pause(struct audio_output *ao)
@@ -268,45 +262,41 @@ void audio_output_pause(struct audio_output *ao)
 		   mixer_auto_close()) */
 		mixer_auto_close(ao->mixer);
 
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
+
 	assert(ao->allow_play);
 	if (audio_output_is_open(ao))
 		ao_command_async(ao, AO_COMMAND_PAUSE);
-	g_mutex_unlock(ao->mutex);
 }
 
 void
 audio_output_drain_async(struct audio_output *ao)
 {
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
+
 	assert(ao->allow_play);
 	if (audio_output_is_open(ao))
 		ao_command_async(ao, AO_COMMAND_DRAIN);
-	g_mutex_unlock(ao->mutex);
 }
 
 void audio_output_cancel(struct audio_output *ao)
 {
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 
 	if (audio_output_is_open(ao)) {
 		ao->allow_play = false;
 		ao_command_async(ao, AO_COMMAND_CANCEL);
 	}
-
-	g_mutex_unlock(ao->mutex);
 }
 
 void
 audio_output_allow_play(struct audio_output *ao)
 {
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 
 	ao->allow_play = true;
 	if (audio_output_is_open(ao))
-		g_cond_signal(ao->cond);
-
-	g_mutex_unlock(ao->mutex);
+		ao->cond.signal();
 }
 
 void
@@ -323,9 +313,8 @@ void audio_output_close(struct audio_output *ao)
 	assert(ao != NULL);
 	assert(!ao->open || ao->fail_timer == NULL);
 
-	g_mutex_lock(ao->mutex);
+	const ScopeLock protect(ao->mutex);
 	audio_output_close_locked(ao);
-	g_mutex_unlock(ao->mutex);
 }
 
 void audio_output_finish(struct audio_output *ao)