TwilightService v2.0 (f7aa8bcb) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/TwilightCalculator.java

deleted100644 → 0

+0 −122

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		/*
		* Copyright (C) 2010 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.server;

		import android.text.format.DateUtils;

		/** @hide */
		public class TwilightCalculator {

		/** Value of {@link #mState} if it is currently day */
		public static final int DAY = 0;

		/** Value of {@link #mState} if it is currently night */
		public static final int NIGHT = 1;

		private static final float DEGREES_TO_RADIANS = (float) (Math.PI / 180.0f);

		// element for calculating solar transit.
		private static final float J0 = 0.0009f;

		// correction for civil twilight
		private static final float ALTIDUTE_CORRECTION_CIVIL_TWILIGHT = -0.104719755f;

		// coefficients for calculating Equation of Center.
		private static final float C1 = 0.0334196f;
		private static final float C2 = 0.000349066f;
		private static final float C3 = 0.000005236f;

		private static final float OBLIQUITY = 0.40927971f;

		// Java time on Jan 1, 2000 12:00 UTC.
		private static final long UTC_2000 = 946728000000L;

		/**
		* Time of sunset (civil twilight) in milliseconds or -1 in the case the day
		* or night never ends.
		*/
		public long mSunset;

		/**
		* Time of sunrise (civil twilight) in milliseconds or -1 in the case the
		* day or night never ends.
		*/
		public long mSunrise;

		/** Current state */
		public int mState;

		/**
		* calculates the civil twilight bases on time and geo-coordinates.
		*
		* @param time time in milliseconds.
		* @param latiude latitude in degrees.
		* @param longitude latitude in degrees.
		*/
		public void calculateTwilight(long time, double latiude, double longitude) {
		final float daysSince2000 = (float) (time - UTC_2000) / DateUtils.DAY_IN_MILLIS;

		// mean anomaly
		final float meanAnomaly = 6.240059968f + daysSince2000 * 0.01720197f;

		// true anomaly
		final double trueAnomaly = meanAnomaly + C1 * Math.sin(meanAnomaly) + C2
		* Math.sin(2 * meanAnomaly) + C3 * Math.sin(3 * meanAnomaly);

		// ecliptic longitude
		final double solarLng = trueAnomaly + 1.796593063d + Math.PI;

		// solar transit in days since 2000
		final double arcLongitude = -longitude / 360;
		float n = Math.round(daysSince2000 - J0 - arcLongitude);
		double solarTransitJ2000 = n + J0 + arcLongitude + 0.0053d * Math.sin(meanAnomaly)
		+ -0.0069d * Math.sin(2 * solarLng);

		// declination of sun
		double solarDec = Math.asin(Math.sin(solarLng) * Math.sin(OBLIQUITY));

		final double latRad = latiude * DEGREES_TO_RADIANS;

		double cosHourAngle = (Math.sin(ALTIDUTE_CORRECTION_CIVIL_TWILIGHT) - Math.sin(latRad)
		* Math.sin(solarDec)) / (Math.cos(latRad) * Math.cos(solarDec));
		// The day or night never ends for the given date and location, if this value is out of
		// range.
		if (cosHourAngle >= 1) {
		mState = NIGHT;
		mSunset = -1;
		mSunrise = -1;
		return;
		} else if (cosHourAngle <= -1) {
		mState = DAY;
		mSunset = -1;
		mSunrise = -1;
		return;
		}

		float hourAngle = (float) (Math.acos(cosHourAngle) / (2 * Math.PI));

		mSunset = Math.round((solarTransitJ2000 + hourAngle) * DateUtils.DAY_IN_MILLIS) + UTC_2000;
		mSunrise = Math.round((solarTransitJ2000 - hourAngle) * DateUtils.DAY_IN_MILLIS) + UTC_2000;

		if (mSunrise < time && mSunset > time) {
		mState = DAY;
		} else {
		mState = NIGHT;
		}
		}

		}

services/core/java/com/android/server/UiModeManagerService.java

+17 −17

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package com.android.server;

		import android.annotation.Nullable;
		import android.app.Activity;
		import android.app.ActivityManager;
		import android.app.ActivityManagerNative;
		@@ -155,8 +156,13 @@ final class UiModeManagerService extends SystemService {

		private final TwilightListener mTwilightListener = new TwilightListener() {
		@Override
		public void onTwilightStateChanged() {
		updateTwilight();
		public void onTwilightStateChanged(@Nullable TwilightState state) {
		synchronized (mLock) {
		if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
		updateComputedNightModeLocked();
		updateLocked(0, 0);
		}
		}
		}
		};

		@@ -344,8 +350,8 @@ final class UiModeManagerService extends SystemService {
		pw.print(" mSystemReady="); pw.println(mSystemReady);
		if (mTwilightManager != null) {
		// We may not have a TwilightManager.
		pw.print(" mTwilightService.getCurrentState()=");
		pw.println(mTwilightManager.getCurrentState());
		pw.print(" mTwilightService.getLastTwilightState()=");
		pw.println(mTwilightManager.getLastTwilightState());
		}
		}
		}
		@@ -355,9 +361,6 @@ final class UiModeManagerService extends SystemService {
		if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
		synchronized (mLock) {
		mTwilightManager = getLocalService(TwilightManager.class);
		if (mTwilightManager != null) {
		mTwilightManager.registerListener(mTwilightListener, mHandler);
		}
		mSystemReady = true;
		mCarModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
		updateComputedNightModeLocked();
		@@ -411,10 +414,16 @@ final class UiModeManagerService extends SystemService {
		}

		if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
		if (mTwilightManager != null) {
		mTwilightManager.registerListener(mTwilightListener, mHandler);
		}
		updateComputedNightModeLocked();
		uiMode \|= mComputedNightMode ? Configuration.UI_MODE_NIGHT_YES
		: Configuration.UI_MODE_NIGHT_NO;
		} else {
		if (mTwilightManager != null) {
		mTwilightManager.unregisterListener(mTwilightListener);
		}
		uiMode \|= mNightMode << 4;
		}

		@@ -668,18 +677,9 @@ final class UiModeManagerService extends SystemService {
		}
		}

		void updateTwilight() {
		synchronized (mLock) {
		if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
		updateComputedNightModeLocked();
		updateLocked(0, 0);
		}
		}
		}

		private void updateComputedNightModeLocked() {
		if (mTwilightManager != null) {
		TwilightState state = mTwilightManager.getCurrentState();
		TwilightState state = mTwilightManager.getLastTwilightState();
		if (state != null) {
		mComputedNightMode = state.isNight();
		}

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

+9 −6

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import com.android.server.twilight.TwilightListener;
		import com.android.server.twilight.TwilightManager;
		import com.android.server.twilight.TwilightState;

		import android.annotation.Nullable;
		import android.hardware.Sensor;
		import android.hardware.SensorEvent;
		import android.hardware.SensorEventListener;
		@@ -268,7 +269,7 @@ class AutomaticBrightnessController {
		pw.println();
		pw.println("Automatic Brightness Controller State:");
		pw.println(" mLightSensor=" + mLightSensor);
		pw.println(" mTwilight.getCurrentState()=" + mTwilight.getCurrentState());
		pw.println(" mTwilight.getLastTwilightState()=" + mTwilight.getLastTwilightState());
		pw.println(" mLightSensorEnabled=" + mLightSensorEnabled);
		pw.println(" mLightSensorEnableTime=" + TimeUtils.formatUptime(mLightSensorEnableTime));
		pw.println(" mAmbientLux=" + mAmbientLux);
		@@ -495,12 +496,14 @@ class AutomaticBrightnessController {
		}

		if (mUseTwilight) {
		TwilightState state = mTwilight.getCurrentState();
		TwilightState state = mTwilight.getLastTwilightState();
		if (state != null && state.isNight()) {
		final long now = System.currentTimeMillis();
		gamma = 1 + state.getAmount() TWILIGHT_ADJUSTMENT_MAX_GAMMA;
		final long duration = state.sunriseTimeMillis() - state.sunsetTimeMillis();
		final long progress = System.currentTimeMillis() - state.sunsetTimeMillis();
		final float amount = (float) Math.pow(2.0 * progress / duration - 1.0, 2.0);
		gamma = 1 + amount TWILIGHT_ADJUSTMENT_MAX_GAMMA;
		if (DEBUG) {
		Slog.d(TAG, "updateAutoBrightness: twilight amount=" + state.getAmount());
		Slog.d(TAG, "updateAutoBrightness: twilight amount=" + amount);
		}
		}
		}
		@@ -621,7 +624,7 @@ class AutomaticBrightnessController {

		private final TwilightListener mTwilightListener = new TwilightListener() {
		@Override
		public void onTwilightStateChanged() {
		public void onTwilightStateChanged(@Nullable TwilightState state) {
		updateAutoBrightness(true /sendUpdate/);
		}
		};

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

+33 −14

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		@@ -20,6 +20,7 @@ import android.animation.Animator;
		import android.animation.AnimatorListenerAdapter;
		import android.animation.TypeEvaluator;
		import android.animation.ValueAnimator;
		import android.annotation.Nullable;
		import android.app.AlarmManager;
		import android.content.BroadcastReceiver;
		import android.content.ContentResolver;
		@@ -217,12 +218,12 @@ public final class NightDisplayService extends SystemService
		if (mIsActivated == null \|\| mIsActivated != activated) {
		Slog.i(TAG, activated ? "Turning on night display" : "Turning off night display");

		mIsActivated = activated;

		if (mAutoMode != null) {
		mAutoMode.onActivated(activated);
		}

		mIsActivated = activated;

		// Cancel the old animator if still running.
		if (mColorMatrixAnimator != null) {
		mColorMatrixAnimator.cancel();
		@@ -395,7 +396,9 @@ public final class NightDisplayService extends SystemService

		@Override
		public void onActivated(boolean activated) {
		if (mIsActivated != null) {
		mLastActivatedTime = Calendar.getInstance();
		}
		updateNextAlarm();
		}

		@@ -424,41 +427,57 @@ public final class NightDisplayService extends SystemService

		private final TwilightManager mTwilightManager;

		private boolean mIsNight;
		private Calendar mLastActivatedTime;

		public TwilightAutoMode() {
		mTwilightManager = getLocalService(TwilightManager.class);
		}

		private void updateActivated() {
		final TwilightState state = mTwilightManager.getCurrentState();
		private void updateActivated(TwilightState state) {
		final boolean isNight = state != null && state.isNight();
		if (mIsNight != isNight) {
		mIsNight = isNight;
		boolean setActivated = mIsActivated == null \|\| mIsActivated != isNight;
		if (setActivated && state != null && mLastActivatedTime != null) {
		final Calendar sunrise = state.sunrise();
		final Calendar sunset = state.sunset();
		if (sunrise.before(sunset)) {
		setActivated = mLastActivatedTime.before(sunrise)
		\|\| mLastActivatedTime.after(sunset);
		} else {
		setActivated = mLastActivatedTime.before(sunset)
		\|\| mLastActivatedTime.after(sunrise);
		}
		}

		if (mIsActivated == null \|\| mIsActivated != isNight) {
		if (setActivated) {
		mController.setActivated(isNight);
		}
		}
		}

		@Override
		public void onStart() {
		mTwilightManager.registerListener(this, mHandler);

		// Force an update to initialize state.
		updateActivated();
		updateActivated(mTwilightManager.getLastTwilightState());
		}

		@Override
		public void onStop() {
		mTwilightManager.unregisterListener(this);
		mLastActivatedTime = null;
		}

		@Override
		public void onTwilightStateChanged() {
		public void onActivated(boolean activated) {
		if (mIsActivated != null) {
		mLastActivatedTime = Calendar.getInstance();
		}
		}

		@Override
		public void onTwilightStateChanged(@Nullable TwilightState state) {
		if (DEBUG) Slog.d(TAG, "onTwilightStateChanged");
		updateActivated();
		updateActivated(state);
		}
		}

services/core/java/com/android/server/twilight/TwilightListener.java

+9 −1

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		@@ -16,6 +16,14 @@

		package com.android.server.twilight;

		import android.annotation.Nullable;

		/**
		* Callback for when the twilight state has changed.
		*/
		public interface TwilightListener {
		void onTwilightStateChanged();
		/**
		* Called when the twilight state has changed.
		*/
		void onTwilightStateChanged(@Nullable TwilightState state);
		}
		No newline at end of file