Add the Spatial audio toggle in SoundSettings

The Spatial audio toggle will be showed only on supported devices

Test: robotest, manual checked the UI, but not the actual functionality due to
doesn't have supported device in hand

Bug: 191870827
Change-Id: I7db264902b03fddb7808676d8cb98cbe045deda1

src/com/android/settings/notification/SpatialAudioPreferenceController.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.notification;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.media.Spatializer;
+
+import com.android.settings.core.TogglePreferenceController;
+
+/**
+ * The controller of the Spatial audio setting in the SoundSettings.
+ */
+public class SpatialAudioPreferenceController extends TogglePreferenceController {
+
+    private static final String KEY_SPATIAL_AUDIO = "spatial_audio";
+
+    private final Spatializer mSpatializer;
+
+    public SpatialAudioPreferenceController(Context context) {
+        super(context, KEY_SPATIAL_AUDIO);
+        AudioManager audioManager = context.getSystemService(AudioManager.class);
+        mSpatializer = audioManager.getSpatializer();
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mSpatializer.getImmersiveAudioLevel() == Spatializer.SPATIALIZER_IMMERSIVE_LEVEL_NONE
+                ? UNSUPPORTED_ON_DEVICE : AVAILABLE;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return mSpatializer.isEnabled();
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        mSpatializer.setEnabled(isChecked);
+        return isChecked == isChecked();
+    }
+}