Allow DeviceConfig to change display settings (bb459a06) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/display/DisplayModeDirector.java

+223 −56

Original line number	Diff line number	Diff line
		@@ -38,13 +38,16 @@ import android.os.Message;
		import android.os.UserHandle;
		import android.os.PowerManager;
		import android.os.SystemClock;
		import android.provider.DeviceConfig;
		import android.provider.Settings;
		import android.text.TextUtils;
		import android.util.Pair;
		import android.util.Slog;
		import android.util.SparseArray;
		import android.view.Display;
		import android.view.DisplayInfo;

		import com.android.internal.os.BackgroundThread;
		import com.android.internal.R;
		import com.android.server.display.whitebalance.DisplayWhiteBalanceFactory;
		import com.android.server.display.whitebalance.AmbientFilter;
		@@ -64,6 +67,8 @@ public class DisplayModeDirector {
		private static final boolean DEBUG = false;

		private static final int MSG_ALLOWED_MODES_CHANGED = 1;
		private static final int MSG_BRIGHTNESS_THRESHOLDS_CHANGED = 2;
		private static final int MSG_DEFAULT_PEAK_REFRESH_RATE_CHANGED = 3;

		// Special ID used to indicate that given vote is to be applied globally, rather than to a
		// specific display.
		@@ -91,6 +96,7 @@ public class DisplayModeDirector {
		private final DisplayObserver mDisplayObserver;
		private final BrightnessObserver mBrightnessObserver;

		private final DeviceConfigDisplaySettings mDeviceConfigDisplaySettings;
		private Listener mListener;

		public DisplayModeDirector(@NonNull Context context, @NonNull Handler handler) {
		@@ -103,7 +109,7 @@ public class DisplayModeDirector {
		mSettingsObserver = new SettingsObserver(context, handler);
		mDisplayObserver = new DisplayObserver(context, handler);
		mBrightnessObserver = new BrightnessObserver(context, handler);

		mDeviceConfigDisplaySettings = new DeviceConfigDisplaySettings();
		}

		/**
		@@ -405,7 +411,7 @@ public class DisplayModeDirector {
		void onAllowedDisplayModesChanged();
		}

		private static final class DisplayModeDirectorHandler extends Handler {
		private final class DisplayModeDirectorHandler extends Handler {
		DisplayModeDirectorHandler(Looper looper) {
		super(looper, null, true /async/);
		}
		@@ -417,6 +423,23 @@ public class DisplayModeDirector {
		Listener listener = (Listener) msg.obj;
		listener.onAllowedDisplayModesChanged();
		break;

		case MSG_BRIGHTNESS_THRESHOLDS_CHANGED:
		Pair<int[], int[]> thresholds = (Pair<int[], int[]>) msg.obj;

		if (thresholds != null) {
		mBrightnessObserver.onDeviceConfigThresholdsChanged(
		thresholds.first, thresholds.second);
		} else {
		mBrightnessObserver.onDeviceConfigThresholdsChanged(null, null);
		}
		break;

		case MSG_DEFAULT_PEAK_REFRESH_RATE_CHANGED:
		Float defaultPeakRefreshRate = (Float) msg.obj;
		mSettingsObserver.onDeviceConfigDefaultPeakRefreshRateChanged(
		defaultPeakRefreshRate);
		break;
		}
		}
		}
		@@ -508,7 +531,7 @@ public class DisplayModeDirector {
		Settings.Global.getUriFor(Settings.Global.LOW_POWER_MODE);

		private final Context mContext;
		private final float mDefaultPeakRefreshRate;
		private float mDefaultPeakRefreshRate;

		SettingsObserver(@NonNull Context context, @NonNull Handler handler) {
		super(handler);
		@@ -523,12 +546,33 @@ public class DisplayModeDirector {
		UserHandle.USER_SYSTEM);
		cr.registerContentObserver(mLowPowerModeSetting, false /notifyDescendants/, this,
		UserHandle.USER_SYSTEM);

		Float deviceConfigDefaultPeakRefresh =
		mDeviceConfigDisplaySettings.getDefaultPeakRefreshRate();
		if (deviceConfigDefaultPeakRefresh != null) {
		mDefaultPeakRefreshRate = deviceConfigDefaultPeakRefresh;
		}

		synchronized (mLock) {
		updateRefreshRateSettingLocked();
		updateLowPowerModeSettingLocked();
		}
		}

		public void onDeviceConfigDefaultPeakRefreshRateChanged(Float defaultPeakRefreshRate) {
		if (defaultPeakRefreshRate == null) {
		defaultPeakRefreshRate = (float) mContext.getResources().getInteger(
		R.integer.config_defaultPeakRefreshRate);
		}

		if (mDefaultPeakRefreshRate != defaultPeakRefreshRate) {
		synchronized (mLock) {
		mDefaultPeakRefreshRate = defaultPeakRefreshRate;
		updateRefreshRateSettingLocked();
		}
		}
		}

		@Override
		public void onChange(boolean selfChange, Uri uri, int userId) {
		synchronized (mLock) {
		@@ -721,8 +765,8 @@ public class DisplayModeDirector {
		Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS);

		private final static int LIGHT_SENSOR_RATE_MS = 250;
		private final int[] mDisplayBrightnessThresholds;
		private final int[] mAmbientBrightnessThresholds;
		private int[] mDisplayBrightnessThresholds;
		private int[] mAmbientBrightnessThresholds;
		// valid threshold if any item from the array >= 0
		private boolean mShouldObserveDisplayChange;
		private boolean mShouldObserveAmbientChange;
		@@ -735,8 +779,10 @@ public class DisplayModeDirector {
		private AmbientFilter mAmbientFilter;

		private final Context mContext;
		// Enable light sensor only when screen is on, peak refresh rate enabled and low power mode
		// off. After initialization, these states will be updated from the same handler thread.

		// Enable light sensor only when mShouldObserveAmbientChange is true, screen is on, peak
		// refresh rate enabled and low power mode off. After initialization, these states will
		// be updated from the same handler thread.
		private boolean mScreenOn = false;
		private boolean mPeakRefreshRateEnabled = false;
		private boolean mLowPowerModeEnabled = false;
		@@ -748,20 +794,96 @@ public class DisplayModeDirector {
		R.array.config_brightnessThresholdsOfPeakRefreshRate);
		mAmbientBrightnessThresholds = context.getResources().getIntArray(
		R.array.config_ambientThresholdsOfPeakRefreshRate);

		if (mDisplayBrightnessThresholds.length != mAmbientBrightnessThresholds.length) {
		throw new RuntimeException("display brightness threshold array and ambient "
		+ "brightness threshold array have different length");
		}
		}

		public void observe(SensorManager sensorManager) {
		mSensorManager = sensorManager;
		// DeviceConfig is accessible after system ready.
		int[] brightnessThresholds = mDeviceConfigDisplaySettings.getBrightnessThresholds();
		int[] ambientThresholds = mDeviceConfigDisplaySettings.getAmbientThresholds();

		if (brightnessThresholds != null && ambientThresholds != null
		&& brightnessThresholds.length == ambientThresholds.length) {
		mDisplayBrightnessThresholds = brightnessThresholds;
		mAmbientBrightnessThresholds = ambientThresholds;
		}
		restartObserver();
		mDeviceConfigDisplaySettings.startListening();
		}

		public void onPeakRefreshRateEnabled(boolean b) {
		if (mPeakRefreshRateEnabled != b) {
		mPeakRefreshRateEnabled = b;
		updateSensorStatus();
		}
		}

		public void onLowPowerModeEnabled(boolean b) {
		if (mLowPowerModeEnabled != b) {
		mLowPowerModeEnabled = b;
		updateSensorStatus();
		}
		}

		public void onDeviceConfigThresholdsChanged(int[] brightnessThresholds,
		int[] ambientThresholds) {
		if (brightnessThresholds != null && ambientThresholds != null
		&& brightnessThresholds.length == ambientThresholds.length) {
		mDisplayBrightnessThresholds = brightnessThresholds;
		mAmbientBrightnessThresholds = ambientThresholds;
		} else {
		// Invalid or empty. Use device default.
		mDisplayBrightnessThresholds = mContext.getResources().getIntArray(
		R.array.config_brightnessThresholdsOfPeakRefreshRate);
		mAmbientBrightnessThresholds = mContext.getResources().getIntArray(
		R.array.config_ambientThresholdsOfPeakRefreshRate);
		}
		restartObserver();
		}

		public void dumpLocked(PrintWriter pw) {
		pw.println(" BrightnessObserver");

		for (int d: mDisplayBrightnessThresholds) {
		pw.println(" mDisplayBrightnessThreshold: " + d);
		}

		for (int d: mAmbientBrightnessThresholds) {
		pw.println(" mAmbientBrightnessThreshold: " + d);
		}
		}

		public void onDisplayChanged(int displayId) {
		if (displayId == Display.DEFAULT_DISPLAY) {
		onScreenOn(isDefaultDisplayOn());
		}
		}

		@Override
		public void onChange(boolean selfChange, Uri uri, int userId) {
		synchronized (mLock) {
		onBrightnessChangedLocked();
		}
		}

		private void restartObserver() {
		mShouldObserveDisplayChange = checkShouldObserve(mDisplayBrightnessThresholds);
		mShouldObserveAmbientChange = checkShouldObserve(mAmbientBrightnessThresholds);
		}

		public void observe(SensorManager sensorManager) {
		if (mShouldObserveDisplayChange) {
		final ContentResolver cr = mContext.getContentResolver();
		if (mShouldObserveDisplayChange) {
		// Content Service does not check if an listener has already been registered.
		// To ensure only one listener is registered, force an unregistration first.
		cr.unregisterContentObserver(this);
		cr.registerContentObserver(mDisplayBrightnessSetting,
		false /notifyDescendants/, this, UserHandle.USER_SYSTEM);
		} else {
		cr.unregisterContentObserver(this);
		}

		if (mShouldObserveAmbientChange) {
		@@ -771,7 +893,7 @@ public class DisplayModeDirector {

		Sensor lightSensor = null;
		if (!TextUtils.isEmpty(lightSensorType)) {
		List<Sensor> sensors = sensorManager.getSensorList(Sensor.TYPE_ALL);
		List<Sensor> sensors = mSensorManager.getSensorList(Sensor.TYPE_ALL);
		for (int i = 0; i < sensors.size(); i++) {
		Sensor sensor = sensors.get(i);
		if (lightSensorType.equals(sensor.getStringType())) {
		@@ -782,61 +904,23 @@ public class DisplayModeDirector {
		}

		if (lightSensor == null) {
		lightSensor = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
		lightSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
		}

		if (lightSensor != null) {
		final Resources res = mContext.getResources();

		mAmbientFilter = DisplayWhiteBalanceFactory.createBrightnessFilter(res);
		mSensorManager = sensorManager;
		mLightSensor = lightSensor;

		onScreenOn(isDefaultDisplayOn());
		}
		} else {
		mAmbientFilter = null;
		mLightSensor = null;
		}

		if (mShouldObserveDisplayChange \|\| mShouldObserveAmbientChange) {
		synchronized (mLock) {
		onBrightnessChangedLocked();
		}
		}
		}

		public void onPeakRefreshRateEnabled(boolean b) {
		if (mShouldObserveAmbientChange && mPeakRefreshRateEnabled != b) {
		mPeakRefreshRateEnabled = b;
		updateSensorStatus();
		}
		}

		public void onLowPowerModeEnabled(boolean b) {
		if (mShouldObserveAmbientChange && mLowPowerModeEnabled != b) {
		mLowPowerModeEnabled = b;
		updateSensorStatus();
		}
		}

		public void onDisplayChanged(int displayId) {
		if (displayId == Display.DEFAULT_DISPLAY) {
		onScreenOn(isDefaultDisplayOn());
		}
		}

		public void dumpLocked(PrintWriter pw) {
		pw.println(" BrightnessObserver");

		for (int d: mDisplayBrightnessThresholds) {
		pw.println(" mDisplayBrightnessThreshold: " + d);
		}

		for (int d: mAmbientBrightnessThresholds) {
		pw.println(" mAmbientBrightnessThreshold: " + d);
		}
		}

		@Override
		public void onChange(boolean selfChange, Uri uri, int userId) {
		synchronized (mLock) {
		onBrightnessChangedLocked();
		}
		@@ -903,7 +987,8 @@ public class DisplayModeDirector {
		return;
		}

		if (mScreenOn && !mLowPowerModeEnabled && mPeakRefreshRateEnabled) {
		if (mShouldObserveAmbientChange && mScreenOn && !mLowPowerModeEnabled
		&& mPeakRefreshRateEnabled) {
		mSensorManager.registerListener(mLightSensorListener,
		mLightSensor, LIGHT_SENSOR_RATE_MS * 1000, mHandler);
		} else {
		@@ -996,6 +1081,88 @@ public class DisplayModeDirector {
		}
		}
		};
		};
		}
		}

		private class DeviceConfigDisplaySettings implements DeviceConfig.OnPropertiesChangedListener {

		public DeviceConfigDisplaySettings() {
		}

		public void startListening() {
		DeviceConfig.addOnPropertiesChangedListener(DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
		BackgroundThread.getExecutor(), this);
		}

		/*
		* Return null if no such property or wrong format (not comma separated integers).
		*/
		public int[] getBrightnessThresholds() {
		return getIntArrayProperty(
		DisplayManager.DeviceConfig.KEY_PEAK_REFRESH_RATE_BRIGHTNESS_THRESHOLDS);
		}

		/*
		* Return null if no such property or wrong format (not comma separated integers).
		*/
		public int[] getAmbientThresholds() {
		return getIntArrayProperty(
		DisplayManager.DeviceConfig.KEY_PEAK_REFRESH_RATE_AMBIENT_THRESHOLDS);
		}

		/*
		* Return null if no such property
		*/
		public Float getDefaultPeakRefreshRate() {
		float defaultPeakRefreshRate = DeviceConfig.getFloat(
		DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
		DisplayManager.DeviceConfig.KEY_PEAK_REFRESH_RATE_DEFAULT, -1);

		if (defaultPeakRefreshRate == -1) {
		return null;
		}
		return defaultPeakRefreshRate;
		}

		@Override
		public void onPropertiesChanged(@NonNull DeviceConfig.Properties properties) {
		int[] brightnessThresholds = getBrightnessThresholds();
		int[] ambientThresholds = getAmbientThresholds();
		Float defaultPeakRefreshRate = getDefaultPeakRefreshRate();

		mHandler.obtainMessage(MSG_BRIGHTNESS_THRESHOLDS_CHANGED,
		new Pair<int[], int[]>(brightnessThresholds, ambientThresholds))
		.sendToTarget();
		mHandler.obtainMessage(MSG_DEFAULT_PEAK_REFRESH_RATE_CHANGED,
		defaultPeakRefreshRate).sendToTarget();
		}

		private int[] getIntArrayProperty(String prop) {
		String strArray = DeviceConfig.getString(DeviceConfig.NAMESPACE_DISPLAY_MANAGER, prop,
		null);

		if (strArray != null) {
		return parseIntArray(strArray);
		}

		return null;
		}

		private int[] parseIntArray(@NonNull String strArray) {
		String[] items = strArray.split(",");
		int[] array = new int[items.length];

		try {
		for (int i = 0; i < array.length; i++) {
		array[i] = Integer.parseInt(items[i]);
		}
		} catch (NumberFormatException e) {
		Slog.e(TAG, "Incorrect format for array: '" + strArray + "'", e);
		array = null;
		}

		return array;
		}
		}

		}