tweaks and optimizations

backend/player/mpv/player.go

@@ -498,7 +498,7 @@ func (p *Player) setState(s player.State) {
 func (p *Player) setAF() error {
 	af := ""
 	if p.peaksEnabled {
-		af = "@astats:astats=metadata=1:reset=1"
+		af = "@astats:astats=metadata=1:reset=1:measure_overall=none"
 	}
 	eq := p.equalizer
 	if eq == nil || !eq.IsEnabled() {

ui/browsing/browsingpane.go

@@ -135,6 +135,12 @@ func (b *BrowsingPane) AddSettingsMenuItem(label string, action func()) {
 		fyne.NewMenuItem(label, action))
 }
 
+func (b *BrowsingPane) AddSettingsSubmenu(label string, menu *fyne.Menu) {
+	item := fyne.NewMenuItem(label, nil)
+	item.ChildMenu = menu
+	b.settingsMenu.Items = append(b.settingsMenu.Items, item)
+}
+
 func (b *BrowsingPane) AddSettingsMenuSeparator() {
 	b.settingsMenu.Items = append(b.settingsMenu.Items,
 		fyne.NewMenuItemSeparator())

ui/mainwindow.go

@@ -138,7 +138,10 @@ func NewMainWindow(fyneApp fyne.App, appName, displayAppName, appVersion string,
 	m.BrowsingPane.AddSettingsMenuItem("Switch Servers", func() { app.ServerManager.Logout(false) })
 	m.BrowsingPane.AddSettingsMenuItem("Rescan Library", func() { app.ServerManager.Server.RescanLibrary() })
 	m.BrowsingPane.AddSettingsMenuSeparator()
-	m.BrowsingPane.AddSettingsMenuItem(lang.L("Show Peak Meter"), m.Controller.ShowPeakMeter)
+	m.BrowsingPane.AddSettingsSubmenu(lang.L("Visualizations"),
+		fyne.NewMenu("", []*fyne.MenuItem{
+			fyne.NewMenuItem(lang.L("Peak Meter"), m.Controller.ShowPeakMeter),
+		}...))
 	m.BrowsingPane.AddSettingsMenuItem("Check for Updates", func() {
 		go func() {
 			if t := app.UpdateChecker.CheckLatestVersionTag(); t != "" && t != app.VersionTag() {

ui/visualizations/peakmeter.go

@@ -90,6 +90,8 @@ type peakMeterRenderer struct {
 	rulerLines  []canvas.Rectangle
 	rulerLabels []canvas.Text
 
+	objects []fyne.CanvasObject
+
 	fgColor   color.Color
 	bgColor   color.Color
 	ruleColor color.Color
@@ -207,15 +209,18 @@ func (l *peakMeterRenderer) Refresh() {
 }
 
 func (l *peakMeterRenderer) Objects() []fyne.CanvasObject {
-	obj := make([]fyne.CanvasObject, 0, 6+len(l.rulerLines))
+	if l.objects == nil {
-	for i := range l.rulerLines {
+		l.objects = make([]fyne.CanvasObject, 0, 6+len(l.rulerLines))
-		obj = append(obj, &l.rulerLines[i], &l.rulerLabels[i])
+		for i := range l.rulerLines {
+			l.objects = append(l.objects, &l.rulerLines[i], &l.rulerLabels[i])
+		}
+		l.objects = append(l.objects,
+			&l.lLabel, &l.rLabel,
+			&l.lPeakRect, &l.rPeakRect,
+			&l.lRMSRect, &l.rRMSRect,
+			&l.lPeakHoldRect, &l.rPeakHoldRect)
 	}
-	return append(obj,
+	return l.objects
-		&l.lLabel, &l.rLabel,
-		&l.lPeakRect, &l.rPeakRect,
-		&l.lRMSRect, &l.rRMSRect,
-		&l.lPeakHoldRect, &l.rPeakHoldRect)
 }
 
 func (l *peakMeterRenderer) Destroy() {