diff --git a/res/values/strings.xml b/res/values/strings.xml
index 5bdd578e959..53abd544d50 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -10071,4 +10071,11 @@
Devices
+
+
+ High Frequency Panel
+
+
+ Enable Virtual High Frequency Panel
+
diff --git a/res/xml/development_settings.xml b/res/xml/development_settings.xml
index a46ff2f9611..8cc8001088b 100644
--- a/res/xml/development_settings.xml
+++ b/res/xml/development_settings.xml
@@ -359,6 +359,11 @@
android:entries="@array/overlay_display_devices_entries"
android:entryValues="@array/overlay_display_devices_values" />
+
+
diff --git a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
index 5be381a04c9..54ca6ef776f 100644
--- a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
+++ b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
@@ -439,6 +439,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
controllers.add(new TransitionAnimationScalePreferenceController(context));
controllers.add(new AnimatorDurationScalePreferenceController(context));
controllers.add(new SecondaryDisplayPreferenceController(context));
+ controllers.add(new HighFrequencyDisplayPreferenceController(context));
controllers.add(new GpuViewUpdatesPreferenceController(context));
controllers.add(new HardwareLayersUpdatesPreferenceController(context));
controllers.add(new DebugGpuOverdrawPreferenceController(context));
diff --git a/src/com/android/settings/development/HighFrequencyDisplayPreferenceController.java b/src/com/android/settings/development/HighFrequencyDisplayPreferenceController.java
new file mode 100644
index 00000000000..cbb8d4ce6d0
--- /dev/null
+++ b/src/com/android/settings/development/HighFrequencyDisplayPreferenceController.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2018 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.development;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.os.Parcel;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.text.TextUtils;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+import androidx.preference.SwitchPreference;
+
+public class HighFrequencyDisplayPreferenceController extends DeveloperOptionsPreferenceController
+ implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
+
+ private static final String HIGH_FREQUENCY_DISPLAY_KEY = "high_frequency_display_device";
+
+ private static final String SURFACE_FLINGER_SERVICE_KEY = "SurfaceFlinger";
+ private static final String SURFACE_COMPOSER_INTERFACE_KEY = "android.ui.ISurfaceComposer";
+ private static final int SURFACE_FLINGER_HIGH_FREQUENCY_DISPLAY_CODE = 1029;
+
+ private final IBinder mSurfaceFlingerBinder;
+
+ public HighFrequencyDisplayPreferenceController(Context context) {
+ super(context);
+ mSurfaceFlingerBinder = ServiceManager.getService(SURFACE_FLINGER_SERVICE_KEY);
+ }
+
+ @Override
+ public String getPreferenceKey() {
+ return HIGH_FREQUENCY_DISPLAY_KEY;
+ }
+
+ @Override
+ public boolean onPreferenceChange(Preference preference, Object newValue) {
+ Boolean isEnabled = (Boolean) newValue;
+ writeHighFrequencyDisplaySetting(isEnabled);
+ ((SwitchPreference) preference).setChecked(isEnabled);
+ return true;
+ }
+
+ @Override
+ public void updateState(Preference preference) {
+ boolean enableHighFrequencyPanel = readHighFrequencyDisplaySetting();
+ ((SwitchPreference) preference).setChecked(enableHighFrequencyPanel);
+ }
+
+ @Override
+ protected void onDeveloperOptionsSwitchDisabled() {
+ super.onDeveloperOptionsSwitchDisabled();
+ writeHighFrequencyDisplaySetting(false);
+ ((SwitchPreference) mPreference).setChecked(false);
+ }
+
+ @VisibleForTesting
+ boolean readHighFrequencyDisplaySetting() {
+ boolean isEnabled = false;
+ try {
+ if (mSurfaceFlingerBinder != null) {
+ final Parcel data = Parcel.obtain();
+ final Parcel result = Parcel.obtain();
+ data.writeInterfaceToken(SURFACE_COMPOSER_INTERFACE_KEY);
+ data.writeInt(0);
+ data.writeInt(0);
+ mSurfaceFlingerBinder.transact(
+ SURFACE_FLINGER_HIGH_FREQUENCY_DISPLAY_CODE,
+ data, result, 0);
+
+ if (result.readInt() != 1 || result.readInt() != 1) {
+ isEnabled = true;
+ }
+ }
+ } catch (RemoteException ex) {
+ // intentional no-op
+ }
+ return isEnabled;
+ }
+
+ @VisibleForTesting
+ void writeHighFrequencyDisplaySetting(boolean isEnabled) {
+ int multiplier;
+ int divisor;
+
+ if (isEnabled) {
+ // 60Hz * 3/2 = 90Hz
+ multiplier = 2;
+ divisor = 3;
+ } else {
+ multiplier = 1;
+ divisor = 1;
+ }
+
+ try {
+ if (mSurfaceFlingerBinder != null) {
+ final Parcel data = Parcel.obtain();
+ data.writeInterfaceToken(SURFACE_COMPOSER_INTERFACE_KEY);
+ data.writeInt(multiplier);
+ data.writeInt(divisor);
+ mSurfaceFlingerBinder.transact(
+ SURFACE_FLINGER_HIGH_FREQUENCY_DISPLAY_CODE,
+ data, null, 0);
+ }
+ } catch (RemoteException ex) {
+ // intentional no-op
+ }
+ }
+}
diff --git a/tests/robotests/src/com/android/settings/development/HighFrequencyPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/development/HighFrequencyPreferenceControllerTest.java
new file mode 100644
index 00000000000..cf8babb5114
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/development/HighFrequencyPreferenceControllerTest.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2018 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.development;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.ShadowParcel;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class HighFrequencyPreferenceControllerTest {
+
+ private Context mContext;
+ private SwitchPreference mPreference;
+
+ @Mock
+ private PreferenceScreen mScreen;
+ @Mock
+ private IBinder mSurfaceFlingerBinder;
+
+ private HighFrequencyDisplayPreferenceController mController;
+
+ @Before
+ public void setUp() {
+ MockitoAnnotations.initMocks(this);
+ mContext = RuntimeEnvironment.application;
+ mPreference = new SwitchPreference(mContext);
+ mController = spy(new HighFrequencyDisplayPreferenceController(mContext));
+ ReflectionHelpers.setField(mController, "mSurfaceFlingerBinder", mSurfaceFlingerBinder);
+ when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+ mController.displayPreference(mScreen);
+ }
+
+ @Test
+ public void onPreferenceChange_settingToggledOn_shouldWriteTrueToHighFrequencySetting() {
+ mController.onPreferenceChange(mPreference, true /* new value */);
+
+ verify(mController).writeHighFrequencyDisplaySetting(true);
+ }
+
+ @Test
+ public void onPreferenceChange_settingToggledOff_shouldWriteFalseToHighFrequencySetting() {
+ mController.onPreferenceChange(mPreference, false /* new value */);
+
+ verify(mController).writeHighFrequencyDisplaySetting(false);
+ }
+
+ @Test
+ public void updateState_settingEnabled_shouldCheckPreference() throws RemoteException {
+ mController.writeHighFrequencyDisplaySetting(true);
+ mController.updateState(mPreference);
+
+ verify(mController).readHighFrequencyDisplaySetting();
+ }
+
+ @Test
+ public void updateState_settingDisabled_shouldUnCheckPreference() throws RemoteException {
+ mController.writeHighFrequencyDisplaySetting(true);
+ mController.updateState(mPreference);
+
+ verify(mController).readHighFrequencyDisplaySetting();
+ }
+
+ @Test
+ public void onDeveloperOptionsSwitchDisabled_preferenceChecked_shouldTurnOffPreference() {
+ mController.onDeveloperOptionsSwitchDisabled();
+
+ verify(mController).writeHighFrequencyDisplaySetting(false);
+ }
+
+ @Test
+ public void onDeveloperOptionsSwitchDisabled_preferenceUnchecked_shouldNotTurnOffPreference() {
+ mController.onDeveloperOptionsSwitchDisabled();
+
+ verify(mController).writeHighFrequencyDisplaySetting(false);
+ }
+}