DMD: Support minimum refresh rate (3b58effa) · Commits · e / os / android_frameworks_base

core/java/android/provider/Settings.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -3476,6 +3476,14 @@ public final class Settings {
		}
		};

		/**
		* The user selected min refresh rate in frames per second.
		*
		* If this isn't set, 0 will be used.
		* @hide
		*/
		public static final String MIN_REFRESH_RATE = "min_refresh_rate";

		/**
		* The user selected peak refresh rate in frames per second.
		*

core/tests/coretests/src/android/provider/SettingsBackupTest.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,7 @@ public class SettingsBackupTest {
		Settings.System.VOLUME_VOICE, // deprecated since API 2?
		Settings.System.WHEN_TO_MAKE_WIFI_CALLS, // bug?
		Settings.System.WINDOW_ORIENTATION_LISTENER_LOG, // used for debugging only
		Settings.System.MIN_REFRESH_RATE, // depends on hardware capabilities
		Settings.System.PEAK_REFRESH_RATE // depends on hardware capabilities
		);

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

+35 −16

Original line number	Diff line number	Diff line
		@@ -525,8 +525,10 @@ public class DisplayModeDirector {
		}

		private final class SettingsObserver extends ContentObserver {
		private final Uri mRefreshRateSetting =
		private final Uri mPeakRefreshRateSetting =
		Settings.System.getUriFor(Settings.System.PEAK_REFRESH_RATE);
		private final Uri mMinRefreshRateSetting =
		Settings.System.getUriFor(Settings.System.MIN_REFRESH_RATE);
		private final Uri mLowPowerModeSetting =
		Settings.Global.getUriFor(Settings.Global.LOW_POWER_MODE);

		@@ -542,7 +544,9 @@ public class DisplayModeDirector {

		public void observe() {
		final ContentResolver cr = mContext.getContentResolver();
		cr.registerContentObserver(mRefreshRateSetting, false /notifyDescendants/, this,
		cr.registerContentObserver(mPeakRefreshRateSetting, false /notifyDescendants/, this,
		UserHandle.USER_SYSTEM);
		cr.registerContentObserver(mMinRefreshRateSetting, false /notifyDescendants/, this,
		UserHandle.USER_SYSTEM);
		cr.registerContentObserver(mLowPowerModeSetting, false /notifyDescendants/, this,
		UserHandle.USER_SYSTEM);
		@@ -576,7 +580,8 @@ public class DisplayModeDirector {
		@Override
		public void onChange(boolean selfChange, Uri uri, int userId) {
		synchronized (mLock) {
		if (mRefreshRateSetting.equals(uri)) {
		if (mPeakRefreshRateSetting.equals(uri)
		\|\| mMinRefreshRateSetting.equals(uri)) {
		updateRefreshRateSettingLocked();
		} else if (mLowPowerModeSetting.equals(uri)) {
		updateLowPowerModeSettingLocked();
		@@ -594,15 +599,22 @@ public class DisplayModeDirector {
		vote = null;
		}
		updateVoteLocked(Vote.PRIORITY_LOW_POWER_MODE, vote);
		mBrightnessObserver.onLowPowerModeEnabled(inLowPowerMode);
		mBrightnessObserver.onLowPowerModeEnabledLocked(inLowPowerMode);
		}

		private void updateRefreshRateSettingLocked() {
		float minRefreshRate = Settings.System.getFloat(mContext.getContentResolver(),
		Settings.System.MIN_REFRESH_RATE, 0f);
		float peakRefreshRate = Settings.System.getFloat(mContext.getContentResolver(),
		Settings.System.PEAK_REFRESH_RATE, mDefaultPeakRefreshRate);
		Vote vote = Vote.forRefreshRates(0f, peakRefreshRate);

		if (peakRefreshRate < minRefreshRate) {
		peakRefreshRate = minRefreshRate;
		}

		Vote vote = Vote.forRefreshRates(minRefreshRate, peakRefreshRate);
		updateVoteLocked(Vote.PRIORITY_USER_SETTING_REFRESH_RATE, vote);
		mBrightnessObserver.onPeakRefreshRateEnabled(peakRefreshRate > 60f);
		mBrightnessObserver.onRefreshRateSettingChangedLocked(minRefreshRate, peakRefreshRate);
		}

		public void dumpLocked(PrintWriter pw) {
		@@ -781,10 +793,10 @@ public class DisplayModeDirector {
		private final Context mContext;

		// 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
		// refresh rate changeable 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 mRefreshRateChangeable = false;
		private boolean mLowPowerModeEnabled = false;

		BrightnessObserver(Context context, Handler handler) {
		@@ -816,14 +828,19 @@ public class DisplayModeDirector {
		mDeviceConfigDisplaySettings.startListening();
		}

		public void onPeakRefreshRateEnabled(boolean b) {
		if (mPeakRefreshRateEnabled != b) {
		mPeakRefreshRateEnabled = b;
		public void onRefreshRateSettingChangedLocked(float min, float max) {
		boolean changeable = (max - min > 1f && max > 60f);
		if (mRefreshRateChangeable != changeable) {
		mRefreshRateChangeable = changeable;
		updateSensorStatus();
		if (!changeable) {
		// Revoke previous vote from BrightnessObserver
		updateVoteLocked(Vote.PRIORITY_LOW_BRIGHTNESS, null);
		}
		}
		}

		public void onLowPowerModeEnabled(boolean b) {
		public void onLowPowerModeEnabledLocked(boolean b) {
		if (mLowPowerModeEnabled != b) {
		mLowPowerModeEnabled = b;
		updateSensorStatus();
		@@ -920,11 +937,13 @@ public class DisplayModeDirector {
		mLightSensor = null;
		}

		if (mRefreshRateChangeable) {
		updateSensorStatus();
		synchronized (mLock) {
		onBrightnessChangedLocked();
		}
		}
		}

		/**
		* Checks to see if at least one value is positive, in which case it is necessary to listen
		@@ -988,7 +1007,7 @@ public class DisplayModeDirector {
		}

		if (mShouldObserveAmbientChange && mScreenOn && !mLowPowerModeEnabled
		&& mPeakRefreshRateEnabled) {
		&& mRefreshRateChangeable) {
		mSensorManager.registerListener(mLightSensorListener,
		mLightSensor, LIGHT_SENSOR_RATE_MS * 1000, mHandler);
		} else {