settings: audio: start level meter on component loaded

Adds a value animation also.

Gitlab: #1124
Change-Id: I4c012188033dcbb58797d5b071a1c154c7231c2b

src/app/settingsview/components/AudioSettingsPage.qml

@@ -37,6 +37,11 @@ SettingsPageBase {
         anchors.left: parent.left
         anchors.leftMargin: JamiTheme.preferredSettingsMarginSize
 
+        Component.onCompleted: {
+            rootLayout.populateAudioSettings();
+            AvAdapter.startAudioMeter();
+        }
+
         Connections {
             target: UtilsAdapter
 
@@ -169,8 +174,6 @@ SettingsPageBase {
             widthOfComboBox: itemWidth
             role: "ID_UTF8"
 
-            Component.onCompleted: rootLayout.populateAudioSettings()
-
             onActivated: {
                 AvAdapter.stopAudioMeter();
                 var selectedAudioManager = comboModel.data(comboModel.index(modelIndex, 0), AudioManagerListModel.AudioManagerID);

src/app/settingsview/components/LevelMeter.qml

@@ -32,6 +32,12 @@ ProgressBar {
         return clamp(rmsLevel * 300.0, 0.0, 100.0);
     }
 
+    Behavior on value {
+        NumberAnimation {
+            duration: 50
+        }
+    }
+
     contentItem: Item {
         implicitWidth: parent.width
         implicitHeight: parent.height