| /* |
| * 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 static com.android.server.display.DisplayTransformManager.LEVEL_COLOR_MATRIX_NIGHT_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.hardware.display.IColorDisplayManager; |
| import android.net.Uri; |
| import android.opengl.Matrix; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.UserHandle; |
| import android.provider.Settings.Secure; |
| import android.util.MathUtils; |
| import android.util.Slog; |
| import android.view.animation.AnimationUtils; |
| |
| import com.android.internal.R; |
| import com.android.internal.app.ColorDisplayController; |
| 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.time.LocalDateTime; |
| import java.time.LocalTime; |
| import java.time.ZoneId; |
| |
| /** |
| * Controls the display's color transforms. |
| */ |
| public final class ColorDisplayService extends SystemService |
| implements ColorDisplayController.Callback { |
| |
| private static final String TAG = "ColorDisplayService"; |
| |
| /** |
| * 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 float[] mMatrixNight = new float[16]; |
| |
| private final float[] mColorTempCoefficients = new float[9]; |
| |
| private int mCurrentUser = UserHandle.USER_NULL; |
| private ContentObserver mUserSetupObserver; |
| private boolean mBootCompleted; |
| |
| private ColorDisplayController mController; |
| private ValueAnimator mColorMatrixAnimator; |
| private Boolean mIsActivated; |
| private AutoMode mAutoMode; |
| |
| public ColorDisplayService(Context context) { |
| super(context); |
| mHandler = new Handler(Looper.getMainLooper()); |
| } |
| |
| @Override |
| public void onStart() { |
| publishBinderService(Context.COLOR_DISPLAY_SERVICE, new BinderService()); |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| 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 /* notifyForDescendants */, 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 ColorDisplayController(getContext(), mCurrentUser); |
| mController.setListener(this); |
| |
| // Set the color mode, if valid, and immediately apply the updated tint matrix based on the |
| // existing activated state. This ensures consistency of tint across the color mode change. |
| onDisplayColorModeChanged(mController.getColorMode()); |
| |
| // Reset the activated state. |
| mIsActivated = null; |
| |
| setCoefficientMatrix(getContext(), DisplayTransformManager.needsLinearColorMatrix()); |
| |
| // 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()); |
| } |
| } |
| |
| 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; |
| } |
| } |
| |
| @Override |
| public void onActivated(boolean activated) { |
| 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); |
| } |
| |
| applyTint(false); |
| } |
| } |
| |
| @Override |
| public void onAutoModeChanged(int autoMode) { |
| Slog.d(TAG, "onAutoModeChanged: autoMode=" + autoMode); |
| |
| if (mAutoMode != null) { |
| mAutoMode.onStop(); |
| mAutoMode = null; |
| } |
| |
| if (autoMode == ColorDisplayController.AUTO_MODE_CUSTOM) { |
| mAutoMode = new CustomAutoMode(); |
| } else if (autoMode == ColorDisplayController.AUTO_MODE_TWILIGHT) { |
| mAutoMode = new TwilightAutoMode(); |
| } |
| |
| if (mAutoMode != null) { |
| mAutoMode.onStart(); |
| } |
| } |
| |
| @Override |
| public void onCustomStartTimeChanged(LocalTime startTime) { |
| Slog.d(TAG, "onCustomStartTimeChanged: startTime=" + startTime); |
| |
| if (mAutoMode != null) { |
| mAutoMode.onCustomStartTimeChanged(startTime); |
| } |
| } |
| |
| @Override |
| public void onCustomEndTimeChanged(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); |
| } |
| |
| @Override |
| public void onDisplayColorModeChanged(int mode) { |
| if (mode == -1) { |
| return; |
| } |
| |
| // Cancel the night display tint animator if it's running. |
| if (mColorMatrixAnimator != null) { |
| mColorMatrixAnimator.cancel(); |
| } |
| |
| setCoefficientMatrix(getContext(), DisplayTransformManager.needsLinearColorMatrix(mode)); |
| setMatrix(mController.getColorTemperature(), mMatrixNight); |
| |
| final DisplayTransformManager dtm = getLocalService(DisplayTransformManager.class); |
| dtm.setColorMode(mode, (mIsActivated != null && mIsActivated) ? mMatrixNight |
| : MATRIX_IDENTITY); |
| } |
| |
| @Override |
| public void onAccessibilityTransformChanged(boolean state) { |
| onDisplayColorModeChanged(mController.getColorMode()); |
| } |
| |
| /** |
| * Set coefficients based on whether the color matrix is linear or not. |
| */ |
| private void setCoefficientMatrix(Context context, boolean needsLinear) { |
| final String[] coefficients = context.getResources().getStringArray(needsLinear |
| ? R.array.config_nightDisplayColorTemperatureCoefficients |
| : R.array.config_nightDisplayColorTemperatureCoefficientsNative); |
| for (int i = 0; i < 9 && i < coefficients.length; i++) { |
| mColorTempCoefficients[i] = Float.parseFloat(coefficients[i]); |
| } |
| } |
| |
| /** |
| * 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(); |
| } |
| |
| 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[1] + mColorTempCoefficients[2]; |
| final float green = squareTemperature * mColorTempCoefficients[3] |
| + colorTemperature * mColorTempCoefficients[4] + mColorTempCoefficients[5]; |
| final float blue = squareTemperature * mColorTempCoefficients[6] |
| + colorTemperature * mColorTempCoefficients[7] + mColorTempCoefficients[8]; |
| outTemp[0] = red; |
| outTemp[5] = green; |
| outTemp[10] = blue; |
| } |
| |
| /** |
| * Returns the first date time corresponding to the local time that occurs before the provided |
| * date time. |
| * |
| * @param compareTime the LocalDateTime to compare against |
| * @return the prior LocalDateTime corresponding to this local time |
| */ |
| public static LocalDateTime getDateTimeBefore(LocalTime localTime, LocalDateTime compareTime) { |
| final LocalDateTime ldt = LocalDateTime.of(compareTime.getYear(), compareTime.getMonth(), |
| compareTime.getDayOfMonth(), localTime.getHour(), localTime.getMinute()); |
| |
| // Check if the local time has passed, if so return the same time yesterday. |
| return ldt.isAfter(compareTime) ? ldt.minusDays(1) : ldt; |
| } |
| |
| /** |
| * Returns the first date time corresponding to this local time that occurs after the provided |
| * date time. |
| * |
| * @param compareTime the LocalDateTime to compare against |
| * @return the next LocalDateTime corresponding to this local time |
| */ |
| public static LocalDateTime getDateTimeAfter(LocalTime localTime, LocalDateTime compareTime) { |
| final LocalDateTime ldt = LocalDateTime.of(compareTime.getYear(), compareTime.getMonth(), |
| compareTime.getDayOfMonth(), localTime.getHour(), localTime.getMinute()); |
| |
| // Check if the local time has passed, if so return the same time tomorrow. |
| return ldt.isBefore(compareTime) ? ldt.plusDays(1) : ldt; |
| } |
| |
| private boolean isDeviceColorManagedInternal() { |
| final DisplayTransformManager dtm = getLocalService(DisplayTransformManager.class); |
| return dtm.isDeviceColorManaged(); |
| } |
| |
| private abstract class AutoMode implements ColorDisplayController.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 LocalTime mStartTime; |
| private LocalTime mEndTime; |
| |
| private LocalDateTime 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 LocalDateTime now = LocalDateTime.now(); |
| final LocalDateTime start = getDateTimeBefore(mStartTime, now); |
| final LocalDateTime end = getDateTimeAfter(mEndTime, start); |
| boolean activate = now.isBefore(end); |
| |
| if (mLastActivatedTime != null) { |
| // Maintain the existing activated state if within the current period. |
| if (mLastActivatedTime.isBefore(now) && mLastActivatedTime.isAfter(start) |
| && (mLastActivatedTime.isAfter(end) || now.isBefore(end))) { |
| activate = mController.isActivated(); |
| } |
| } |
| |
| if (mIsActivated == null || mIsActivated != activate) { |
| mController.setActivated(activate); |
| } |
| |
| updateNextAlarm(mIsActivated, now); |
| } |
| |
| private void updateNextAlarm(@Nullable Boolean activated, @NonNull LocalDateTime now) { |
| if (activated != null) { |
| final LocalDateTime next = activated ? getDateTimeAfter(mEndTime, now) |
| : getDateTimeAfter(mStartTime, now); |
| final long millis = next.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); |
| mAlarmManager.setExact(AlarmManager.RTC, millis, 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 = mController.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 = mController.getLastActivatedTime(); |
| updateNextAlarm(activated, LocalDateTime.now()); |
| } |
| |
| @Override |
| public void onCustomStartTimeChanged(LocalTime startTime) { |
| mStartTime = startTime; |
| mLastActivatedTime = null; |
| updateActivated(); |
| } |
| |
| @Override |
| public void onCustomEndTimeChanged(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; |
| |
| TwilightAutoMode() { |
| mTwilightManager = getLocalService(TwilightManager.class); |
| } |
| |
| private void updateActivated(TwilightState state) { |
| if (state == null) { |
| // If there isn't a valid TwilightState then just keep the current activated |
| // state. |
| return; |
| } |
| |
| boolean activate = state.isNight(); |
| final LocalDateTime lastActivatedTime = mController.getLastActivatedTime(); |
| if (lastActivatedTime != null) { |
| final LocalDateTime now = LocalDateTime.now(); |
| final LocalDateTime sunrise = state.sunrise(); |
| final LocalDateTime sunset = state.sunset(); |
| // Maintain the existing activated state if within the current period. |
| if (lastActivatedTime.isBefore(now) && (lastActivatedTime.isBefore(sunrise) |
| ^ lastActivatedTime.isBefore(sunset))) { |
| activate = mController.isActivated(); |
| } |
| } |
| |
| if (mIsActivated == null || mIsActivated != activate) { |
| mController.setActivated(activate); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| mTwilightManager.registerListener(this, mHandler); |
| |
| // Force an update to initialize state. |
| updateActivated(mTwilightManager.getLastTwilightState()); |
| } |
| |
| @Override |
| public void onStop() { |
| mTwilightManager.unregisterListener(this); |
| } |
| |
| @Override |
| public void onActivated(boolean activated) { |
| } |
| |
| @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; |
| } |
| } |
| |
| private final class BinderService extends IColorDisplayManager.Stub { |
| @Override |
| public boolean isDeviceColorManaged() { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| return isDeviceColorManagedInternal(); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| } |
| } |