Add rate change selector

Model/Player/Backends/MPVBackend.swift

@@ -216,8 +216,8 @@ final class MPVBackend: PlayerBackend {
         }
     }
 
-    func setRate(_: Float) {
+    func setRate(_ rate: Float) {
-        // TODO: Implement rate change
+        client.setDoubleAsync("speed", Double(rate))
     }
 
     func closeItem() {}

Model/Player/Backends/MPVClient.swift

@@ -225,6 +225,11 @@ final class MPVClient: ObservableObject {
         mpv_set_property_async(mpv, 0, name, MPV_FORMAT_FLAG, &data)
     }
 
+    func setDoubleAsync(_ name: String, _ value: Double) {
+        var data = value
+        mpv_set_property_async(mpv, 0, name, MPV_FORMAT_DOUBLE, &data)
+    }
+
     private func getDouble(_ name: String) -> Double {
         var data = Double()
         mpv_get_property(mpv, name, MPV_FORMAT_DOUBLE, &data)

Model/Player/PlayerModel.swift

@@ -338,6 +338,7 @@ final class PlayerModel: ObservableObject {
         }
 
         inactiveBackends().forEach { $0.pause() }
+        backend.setRate(currentRate)
 
         let fromBackend: PlayerBackend = from == .appleAVPlayer ? avPlayerBackend : mpvBackend
         let toBackend: PlayerBackend = to == .appleAVPlayer ? avPlayerBackend : mpvBackend

Shared/Defaults.swift

@@ -122,8 +122,10 @@ enum ResolutionSetting: String, CaseIterable, Defaults.Serializable {
         switch self {
         case .best:
             return "Best available quality"
-        case .hd2160p:
+        case .hd2160p60:
             return "4K, 60fps"
+        case .hd2160p:
+            return "4K"
         default:
             return value.name
         }

Shared/Player/Controls/PlayerControls.swift

@@ -176,8 +176,10 @@ struct PlayerControls: View {
         HStack {
             #if !os(tvOS)
                 fullscreenButton
+                rateButton
+
+                Spacer()
             #endif
-            Spacer()
 //            button("Music Mode", systemImage: "music.note")
         }
     }
@@ -194,6 +196,41 @@ struct PlayerControls: View {
         #endif
     }
 
+    private var rateButton: some View {
+        #if os(macOS)
+            ratePicker
+                .labelsHidden()
+                .frame(maxWidth: 70)
+        #else
+            Menu {
+                ratePicker
+                    .frame(width: 45, height: 30)
+                #if os(iOS)
+                    .background(VisualEffectBlur(blurStyle: .systemThinMaterial))
+                #endif
+                    .mask(RoundedRectangle(cornerRadius: 3))
+            } label: {
+                Text(player.rateLabel(player.currentRate))
+                    .foregroundColor(.primary)
+                    .frame(maxWidth: .infinity)
+            }
+
+        #endif
+    }
+
+    var ratePicker: some View {
+        Picker("Rate", selection: rateBinding) {
+            ForEach(PlayerModel.availableRates, id: \.self) { rate in
+                Text(player.rateLabel(rate)).tag(rate)
+            }
+        }
+        .transaction { t in t.animation = .none }
+    }
+
+    private var rateBinding: Binding<Float> {
+        .init(get: { player.currentRate }, set: { rate in player.currentRate = rate })
+    }
+
     var mediumButtonsBar: some View {
         HStack {
             #if !os(tvOS)