| /* |
| * Copyright (C) 2016 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.display; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.TypeEvaluator; |
| import android.animation.ValueAnimator; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.AlarmManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.database.ContentObserver; |
| import android.net.Uri; |
| import android.opengl.Matrix; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.provider.Settings.Secure; |
| import android.service.vr.IVrManager; |
| import android.service.vr.IVrStateCallbacks; |
| import android.util.MathUtils; |
| import android.util.Slog; |
| import android.view.animation.AnimationUtils; |
| |
| import com.android.internal.app.NightDisplayController; |
| import com.android.server.SystemService; |
| import com.android.server.twilight.TwilightListener; |
| import com.android.server.twilight.TwilightManager; |
| import com.android.server.twilight.TwilightState; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.Calendar; |
| import java.util.TimeZone; |
| |
| import static com.android.server.display.DisplayTransformManager.LEVEL_COLOR_MATRIX_NIGHT_DISPLAY; |
| |
| /** |
| * Tints the display at night. |
| */ |
| public final class NightDisplayService extends SystemService |
| implements NightDisplayController.Callback { |
| |
| private static final String TAG = "NightDisplayService"; |
| |
| /** |
| * The transition time, in milliseconds, for Night Display to turn on/off. |
| */ |
| private static final long TRANSITION_DURATION = 3000L; |
| |
| /** |
| * The identity matrix, used if one of the given matrices is {@code null}. |
| */ |
| private static final float[] MATRIX_IDENTITY = new float[16]; |
| static { |
| Matrix.setIdentityM(MATRIX_IDENTITY, 0); |
| } |
| |
| /** |
| * Evaluator used to animate color matrix transitions. |
| */ |
| private static final ColorMatrixEvaluator COLOR_MATRIX_EVALUATOR = new ColorMatrixEvaluator(); |
| |
| private final Handler mHandler; |
| private final AtomicBoolean mIgnoreAllColorMatrixChanges = new AtomicBoolean(); |
| private final IVrStateCallbacks mVrStateCallbacks = new IVrStateCallbacks.Stub() { |
| @Override |
| public void onVrStateChanged(final boolean enabled) { |
| // Turn off all night mode display stuff while device is in VR mode. |
| mIgnoreAllColorMatrixChanges.set(enabled); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| // Cancel in-progress animations |
| if (mColorMatrixAnimator != null) { |
| mColorMatrixAnimator.cancel(); |
| } |
| |
| final DisplayTransformManager dtm = |
| getLocalService(DisplayTransformManager.class); |
| if (enabled) { |
| dtm.setColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY, MATRIX_IDENTITY); |
| } else if (mController != null && mController.isActivated()) { |
| setMatrix(mController.getColorTemperature(), mMatrixNight); |
| dtm.setColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY, mMatrixNight); |
| } |
| } |
| }); |
| } |
| }; |
| |
| private float[] mMatrixNight = new float[16]; |
| |
| /** |
| * These coefficients were generated by an LLS quadratic regression fitted to the |
| * overdetermined system based on experimental readings (and subsequent conversion from xy |
| * chromaticity coordinates to gamma-corrected RGB values): { (temperature, R, G, B) } -> |
| * { (7304, 1.0, 1.0, 1.0), (4082, 1.0, 0.857, 0.719), (2850, 1.0, .754, .516), |
| * (2596, 1.0, 0.722, 0.454) }. The 3x3 matrix is formatted like so: |
| * <table> |
| * <tr><td>R: a coefficient</td><td>G: a coefficient</td><td>B: a coefficient</td></tr> |
| * <tr><td>R: b coefficient</td><td>G: b coefficient</td><td>B: b coefficient</td></tr> |
| * <tr><td>R: y-intercept</td><td>G: y-intercept</td><td>B: y-intercept</td></tr> |
| * </table> |
| */ |
| private static final float[] mColorTempCoefficients = new float[] { |
| 0.0f, -0.00000000962353339f, -0.0000000189359041f, |
| 0.0f, 0.000153045476f, 0.000302412211f, |
| 1.0f, 0.390782778f, -0.198650895f |
| }; |
| |
| private int mCurrentUser = UserHandle.USER_NULL; |
| private ContentObserver mUserSetupObserver; |
| private boolean mBootCompleted; |
| |
| private NightDisplayController mController; |
| private ValueAnimator mColorMatrixAnimator; |
| private Boolean mIsActivated; |
| private AutoMode mAutoMode; |
| |
| public NightDisplayService(Context context) { |
| super(context); |
| mHandler = new Handler(Looper.getMainLooper()); |
| } |
| |
| @Override |
| public void onStart() { |
| // Nothing to publish. |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| if (phase >= PHASE_SYSTEM_SERVICES_READY) { |
| final IVrManager vrManager = IVrManager.Stub.asInterface( |
| getBinderService(Context.VR_SERVICE)); |
| if (vrManager != null) { |
| try { |
| vrManager.registerListener(mVrStateCallbacks); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to register VR mode state listener: " + e); |
| } |
| } |
| } |
| |
| if (phase >= PHASE_BOOT_COMPLETED) { |
| mBootCompleted = true; |
| |
| // Register listeners now that boot is complete. |
| if (mCurrentUser != UserHandle.USER_NULL && mUserSetupObserver == null) { |
| setUp(); |
| } |
| } |
| } |
| |
| @Override |
| public void onStartUser(int userHandle) { |
| super.onStartUser(userHandle); |
| |
| if (mCurrentUser == UserHandle.USER_NULL) { |
| onUserChanged(userHandle); |
| } |
| } |
| |
| @Override |
| public void onSwitchUser(int userHandle) { |
| super.onSwitchUser(userHandle); |
| |
| onUserChanged(userHandle); |
| } |
| |
| @Override |
| public void onStopUser(int userHandle) { |
| super.onStopUser(userHandle); |
| |
| if (mCurrentUser == userHandle) { |
| onUserChanged(UserHandle.USER_NULL); |
| } |
| } |
| |
| private void onUserChanged(int userHandle) { |
| final ContentResolver cr = getContext().getContentResolver(); |
| |
| if (mCurrentUser != UserHandle.USER_NULL) { |
| if (mUserSetupObserver != null) { |
| cr.unregisterContentObserver(mUserSetupObserver); |
| mUserSetupObserver = null; |
| } else if (mBootCompleted) { |
| tearDown(); |
| } |
| } |
| |
| mCurrentUser = userHandle; |
| |
| if (mCurrentUser != UserHandle.USER_NULL) { |
| if (!isUserSetupCompleted(cr, mCurrentUser)) { |
| mUserSetupObserver = new ContentObserver(mHandler) { |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| if (isUserSetupCompleted(cr, mCurrentUser)) { |
| cr.unregisterContentObserver(this); |
| mUserSetupObserver = null; |
| |
| if (mBootCompleted) { |
| setUp(); |
| } |
| } |
| } |
| }; |
| cr.registerContentObserver(Secure.getUriFor(Secure.USER_SETUP_COMPLETE), |
| false /* notifyForDescendents */, mUserSetupObserver, mCurrentUser); |
| } else if (mBootCompleted) { |
| setUp(); |
| } |
| } |
| } |
| |
| private static boolean isUserSetupCompleted(ContentResolver cr, int userHandle) { |
| return Secure.getIntForUser(cr, Secure.USER_SETUP_COMPLETE, 0, userHandle) == 1; |
| } |
| |
| private void setUp() { |
| Slog.d(TAG, "setUp: currentUser=" + mCurrentUser); |
| |
| // Create a new controller for the current user and start listening for changes. |
| mController = new NightDisplayController(getContext(), mCurrentUser); |
| mController.setListener(this); |
| |
| // Prepare color transformation matrix. |
| setMatrix(mController.getColorTemperature(), mMatrixNight); |
| |
| // Initialize the current auto mode. |
| onAutoModeChanged(mController.getAutoMode()); |
| |
| // Force the initialization current activated state. |
| if (mIsActivated == null) { |
| onActivated(mController.isActivated()); |
| } |
| |
| // Transition the screen to the current temperature. |
| applyTint(false); |
| } |
| |
| private void tearDown() { |
| Slog.d(TAG, "tearDown: currentUser=" + mCurrentUser); |
| |
| if (mController != null) { |
| mController.setListener(null); |
| mController = null; |
| } |
| |
| if (mAutoMode != null) { |
| mAutoMode.onStop(); |
| mAutoMode = null; |
| } |
| |
| if (mColorMatrixAnimator != null) { |
| mColorMatrixAnimator.end(); |
| mColorMatrixAnimator = null; |
| } |
| |
| mIsActivated = null; |
| } |
| |
| @Override |
| public void onActivated(boolean activated) { |
| if (mIsActivated == null || mIsActivated != activated) { |
| Slog.i(TAG, activated ? "Turning on night display" : "Turning off night display"); |
| |
| if (mIsActivated != null) { |
| Secure.putLongForUser(getContext().getContentResolver(), |
| Secure.NIGHT_DISPLAY_LAST_ACTIVATED_TIME, System.currentTimeMillis(), |
| mCurrentUser); |
| } |
| |
| mIsActivated = activated; |
| |
| if (mAutoMode != null) { |
| mAutoMode.onActivated(activated); |
| } |
| |
| applyTint(false); |
| } |
| } |
| |
| @Override |
| public void onAutoModeChanged(int autoMode) { |
| Slog.d(TAG, "onAutoModeChanged: autoMode=" + autoMode); |
| |
| if (mAutoMode != null) { |
| mAutoMode.onStop(); |
| mAutoMode = null; |
| } |
| |
| if (autoMode == NightDisplayController.AUTO_MODE_CUSTOM) { |
| mAutoMode = new CustomAutoMode(); |
| } else if (autoMode == NightDisplayController.AUTO_MODE_TWILIGHT) { |
| mAutoMode = new TwilightAutoMode(); |
| } |
| |
| if (mAutoMode != null) { |
| mAutoMode.onStart(); |
| } |
| } |
| |
| @Override |
| public void onCustomStartTimeChanged(NightDisplayController.LocalTime startTime) { |
| Slog.d(TAG, "onCustomStartTimeChanged: startTime=" + startTime); |
| |
| if (mAutoMode != null) { |
| mAutoMode.onCustomStartTimeChanged(startTime); |
| } |
| } |
| |
| @Override |
| public void onCustomEndTimeChanged(NightDisplayController.LocalTime endTime) { |
| Slog.d(TAG, "onCustomEndTimeChanged: endTime=" + endTime); |
| |
| if (mAutoMode != null) { |
| mAutoMode.onCustomEndTimeChanged(endTime); |
| } |
| } |
| |
| @Override |
| public void onColorTemperatureChanged(int colorTemperature) { |
| setMatrix(colorTemperature, mMatrixNight); |
| applyTint(true); |
| } |
| |
| /** |
| * Applies current color temperature matrix, or removes it if deactivated. |
| * |
| * @param immediate {@code true} skips transition animation |
| */ |
| private void applyTint(boolean immediate) { |
| // Cancel the old animator if still running. |
| if (mColorMatrixAnimator != null) { |
| mColorMatrixAnimator.cancel(); |
| } |
| |
| // Don't do any color matrix change animations if we are ignoring them anyway. |
| if (mIgnoreAllColorMatrixChanges.get()) { |
| return; |
| } |
| |
| final DisplayTransformManager dtm = getLocalService(DisplayTransformManager.class); |
| final float[] from = dtm.getColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY); |
| final float[] to = mIsActivated ? mMatrixNight : MATRIX_IDENTITY; |
| |
| if (immediate) { |
| dtm.setColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY, to); |
| } else { |
| mColorMatrixAnimator = ValueAnimator.ofObject(COLOR_MATRIX_EVALUATOR, |
| from == null ? MATRIX_IDENTITY : from, to); |
| mColorMatrixAnimator.setDuration(TRANSITION_DURATION); |
| mColorMatrixAnimator.setInterpolator(AnimationUtils.loadInterpolator( |
| getContext(), android.R.interpolator.fast_out_slow_in)); |
| mColorMatrixAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animator) { |
| final float[] value = (float[]) animator.getAnimatedValue(); |
| dtm.setColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY, value); |
| } |
| }); |
| mColorMatrixAnimator.addListener(new AnimatorListenerAdapter() { |
| |
| private boolean mIsCancelled; |
| |
| @Override |
| public void onAnimationCancel(Animator animator) { |
| mIsCancelled = true; |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animator) { |
| if (!mIsCancelled) { |
| // Ensure final color matrix is set at the end of the animation. If the |
| // animation is cancelled then don't set the final color matrix so the new |
| // animator can pick up from where this one left off. |
| dtm.setColorMatrix(LEVEL_COLOR_MATRIX_NIGHT_DISPLAY, to); |
| } |
| mColorMatrixAnimator = null; |
| } |
| }); |
| mColorMatrixAnimator.start(); |
| } |
| } |
| |
| /** |
| * Set the color transformation {@code MATRIX_NIGHT} to the given color temperature. |
| * |
| * @param colorTemperature color temperature in Kelvin |
| * @param outTemp the 4x4 display transformation matrix for that color temperature |
| */ |
| private void setMatrix(int colorTemperature, float[] outTemp) { |
| if (outTemp.length != 16) { |
| Slog.d(TAG, "The display transformation matrix must be 4x4"); |
| return; |
| } |
| |
| Matrix.setIdentityM(mMatrixNight, 0); |
| |
| final float squareTemperature = colorTemperature * colorTemperature; |
| final float red = squareTemperature * mColorTempCoefficients[0] |
| + colorTemperature * mColorTempCoefficients[3] + mColorTempCoefficients[6]; |
| final float green = squareTemperature * mColorTempCoefficients[1] |
| + colorTemperature * mColorTempCoefficients[4] + mColorTempCoefficients[7]; |
| final float blue = squareTemperature * mColorTempCoefficients[2] |
| + colorTemperature * mColorTempCoefficients[5] + mColorTempCoefficients[8]; |
| outTemp[0] = red; |
| outTemp[5] = green; |
| outTemp[10] = blue; |
| } |
| |
| private Calendar getLastActivatedTime() { |
| final ContentResolver cr = getContext().getContentResolver(); |
| final long lastActivatedTimeMillis = Secure.getLongForUser( |
| cr, Secure.NIGHT_DISPLAY_LAST_ACTIVATED_TIME, -1, mCurrentUser); |
| if (lastActivatedTimeMillis < 0) { |
| return null; |
| } |
| |
| final Calendar lastActivatedTime = Calendar.getInstance(); |
| lastActivatedTime.setTimeInMillis(lastActivatedTimeMillis); |
| return lastActivatedTime; |
| } |
| |
| private abstract class AutoMode implements NightDisplayController.Callback { |
| public abstract void onStart(); |
| |
| public abstract void onStop(); |
| } |
| |
| private class CustomAutoMode extends AutoMode implements AlarmManager.OnAlarmListener { |
| |
| private final AlarmManager mAlarmManager; |
| private final BroadcastReceiver mTimeChangedReceiver; |
| |
| private NightDisplayController.LocalTime mStartTime; |
| private NightDisplayController.LocalTime mEndTime; |
| |
| private Calendar mLastActivatedTime; |
| |
| CustomAutoMode() { |
| mAlarmManager = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE); |
| mTimeChangedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| updateActivated(); |
| } |
| }; |
| } |
| |
| private void updateActivated() { |
| final Calendar now = Calendar.getInstance(); |
| final Calendar startTime = mStartTime.getDateTimeBefore(now); |
| final Calendar endTime = mEndTime.getDateTimeAfter(startTime); |
| |
| boolean activate = now.before(endTime); |
| if (mLastActivatedTime != null) { |
| // Convert mLastActivatedTime to the current timezone if needed. |
| final TimeZone currentTimeZone = now.getTimeZone(); |
| if (!currentTimeZone.equals(mLastActivatedTime.getTimeZone())) { |
| final int year = mLastActivatedTime.get(Calendar.YEAR); |
| final int dayOfYear = mLastActivatedTime.get(Calendar.DAY_OF_YEAR); |
| final int hourOfDay = mLastActivatedTime.get(Calendar.HOUR_OF_DAY); |
| final int minute = mLastActivatedTime.get(Calendar.MINUTE); |
| |
| mLastActivatedTime.setTimeZone(currentTimeZone); |
| mLastActivatedTime.set(Calendar.YEAR, year); |
| mLastActivatedTime.set(Calendar.DAY_OF_YEAR, dayOfYear); |
| mLastActivatedTime.set(Calendar.HOUR_OF_DAY, hourOfDay); |
| mLastActivatedTime.set(Calendar.MINUTE, minute); |
| } |
| |
| // Maintain the existing activated state if within the current period. |
| if (mLastActivatedTime.before(now) |
| && mLastActivatedTime.after(startTime) |
| && (mLastActivatedTime.after(endTime) || now.before(endTime))) { |
| activate = mController.isActivated(); |
| } |
| } |
| |
| if (mIsActivated == null || mIsActivated != activate) { |
| mController.setActivated(activate); |
| } |
| updateNextAlarm(mIsActivated, now); |
| } |
| |
| private void updateNextAlarm(@Nullable Boolean activated, @NonNull Calendar now) { |
| if (activated != null) { |
| final Calendar next = activated ? mEndTime.getDateTimeAfter(now) |
| : mStartTime.getDateTimeAfter(now); |
| mAlarmManager.setExact(AlarmManager.RTC, next.getTimeInMillis(), TAG, this, null); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| final IntentFilter intentFilter = new IntentFilter(Intent.ACTION_TIME_CHANGED); |
| intentFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED); |
| getContext().registerReceiver(mTimeChangedReceiver, intentFilter); |
| |
| mStartTime = mController.getCustomStartTime(); |
| mEndTime = mController.getCustomEndTime(); |
| |
| mLastActivatedTime = getLastActivatedTime(); |
| |
| // Force an update to initialize state. |
| updateActivated(); |
| } |
| |
| @Override |
| public void onStop() { |
| getContext().unregisterReceiver(mTimeChangedReceiver); |
| |
| mAlarmManager.cancel(this); |
| mLastActivatedTime = null; |
| } |
| |
| @Override |
| public void onActivated(boolean activated) { |
| mLastActivatedTime = getLastActivatedTime(); |
| updateNextAlarm(activated, Calendar.getInstance()); |
| } |
| |
| @Override |
| public void onCustomStartTimeChanged(NightDisplayController.LocalTime startTime) { |
| mStartTime = startTime; |
| mLastActivatedTime = null; |
| updateActivated(); |
| } |
| |
| @Override |
| public void onCustomEndTimeChanged(NightDisplayController.LocalTime endTime) { |
| mEndTime = endTime; |
| mLastActivatedTime = null; |
| updateActivated(); |
| } |
| |
| @Override |
| public void onAlarm() { |
| Slog.d(TAG, "onAlarm"); |
| updateActivated(); |
| } |
| } |
| |
| private class TwilightAutoMode extends AutoMode implements TwilightListener { |
| |
| private final TwilightManager mTwilightManager; |
| |
| private Calendar mLastActivatedTime; |
| |
| TwilightAutoMode() { |
| mTwilightManager = getLocalService(TwilightManager.class); |
| } |
| |
| private void updateActivated(TwilightState state) { |
| boolean activate = state != null && state.isNight(); |
| if (state != null && mLastActivatedTime != null) { |
| final Calendar now = Calendar.getInstance(); |
| final Calendar sunrise = state.sunrise(); |
| final Calendar sunset = state.sunset(); |
| |
| // Maintain the existing activated state if within the current period. |
| if (mLastActivatedTime.before(now) |
| && (mLastActivatedTime.after(sunrise) ^ mLastActivatedTime.after(sunset))) { |
| activate = mController.isActivated(); |
| } |
| } |
| |
| if (mIsActivated == null || mIsActivated != activate) { |
| mController.setActivated(activate); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| mTwilightManager.registerListener(this, mHandler); |
| mLastActivatedTime = getLastActivatedTime(); |
| |
| // Force an update to initialize state. |
| updateActivated(mTwilightManager.getLastTwilightState()); |
| } |
| |
| @Override |
| public void onStop() { |
| mTwilightManager.unregisterListener(this); |
| mLastActivatedTime = null; |
| } |
| |
| @Override |
| public void onActivated(boolean activated) { |
| if (mIsActivated != null) { |
| mLastActivatedTime = getLastActivatedTime(); |
| } |
| } |
| |
| @Override |
| public void onTwilightStateChanged(@Nullable TwilightState state) { |
| Slog.d(TAG, "onTwilightStateChanged: isNight=" |
| + (state == null ? null : state.isNight())); |
| updateActivated(state); |
| } |
| } |
| |
| /** |
| * Interpolates between two 4x4 color transform matrices (in column-major order). |
| */ |
| private static class ColorMatrixEvaluator implements TypeEvaluator<float[]> { |
| |
| /** |
| * Result matrix returned by {@link #evaluate(float, float[], float[])}. |
| */ |
| private final float[] mResultMatrix = new float[16]; |
| |
| @Override |
| public float[] evaluate(float fraction, float[] startValue, float[] endValue) { |
| for (int i = 0; i < mResultMatrix.length; i++) { |
| mResultMatrix[i] = MathUtils.lerp(startValue[i], endValue[i], fraction); |
| } |
| return mResultMatrix; |
| } |
| } |
| } |