| /* |
| * Copyright (C) 2017 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.systemui.doze; |
| |
| import static android.os.PowerManager.GO_TO_SLEEP_REASON_TIMEOUT; |
| |
| import static com.android.systemui.keyguard.WakefulnessLifecycle.WAKEFULNESS_GOING_TO_SLEEP; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.hardware.Sensor; |
| import android.hardware.SensorEvent; |
| import android.hardware.SensorEventListener; |
| import android.hardware.SensorManager; |
| import android.os.Handler; |
| import android.os.PowerManager; |
| import android.os.SystemProperties; |
| import android.os.Trace; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| import android.util.IndentingPrintWriter; |
| |
| import com.android.internal.R; |
| import com.android.systemui.doze.dagger.BrightnessSensor; |
| import com.android.systemui.doze.dagger.DozeScope; |
| import com.android.systemui.doze.dagger.WrappedService; |
| import com.android.systemui.keyguard.WakefulnessLifecycle; |
| import com.android.systemui.statusbar.phone.DozeParameters; |
| import com.android.systemui.statusbar.policy.DevicePostureController; |
| import com.android.systemui.util.sensors.AsyncSensorManager; |
| |
| import java.io.PrintWriter; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * Controls the screen brightness when dozing. |
| */ |
| @DozeScope |
| public class DozeScreenBrightness extends BroadcastReceiver implements DozeMachine.Part, |
| SensorEventListener { |
| private static final boolean DEBUG_AOD_BRIGHTNESS = SystemProperties |
| .getBoolean("debug.aod_brightness", false); |
| protected static final String ACTION_AOD_BRIGHTNESS = |
| "com.android.systemui.doze.AOD_BRIGHTNESS"; |
| protected static final String BRIGHTNESS_BUCKET = "brightness_bucket"; |
| |
| /** |
| * Just before the screen times out from user inactivity, DisplayPowerController dims the screen |
| * brightness to the lower of {@link #mScreenBrightnessDim}, or the current brightness minus |
| * this amount. |
| */ |
| private final float mScreenBrightnessMinimumDimAmountFloat; |
| private final Context mContext; |
| private final DozeMachine.Service mDozeService; |
| private final DozeHost mDozeHost; |
| private final Handler mHandler; |
| private final SensorManager mSensorManager; |
| private final Optional<Sensor>[] mLightSensorOptional; // light sensors to use per posture |
| private final WakefulnessLifecycle mWakefulnessLifecycle; |
| private final DozeParameters mDozeParameters; |
| private final DevicePostureController mDevicePostureController; |
| private final DozeLog mDozeLog; |
| private final int[] mSensorToBrightness; |
| private final int[] mSensorToScrimOpacity; |
| private final int mScreenBrightnessDim; |
| |
| @DevicePostureController.DevicePostureInt |
| private int mDevicePosture; |
| private boolean mRegistered; |
| private int mDefaultDozeBrightness; |
| private boolean mPaused = false; |
| private boolean mScreenOff = false; |
| private int mLastSensorValue = -1; |
| private DozeMachine.State mState = DozeMachine.State.UNINITIALIZED; |
| |
| /** |
| * Debug value used for emulating various display brightness buckets: |
| * |
| * {@code am broadcast -p com.android.systemui -a com.android.systemui.doze.AOD_BRIGHTNESS |
| * --ei brightness_bucket 1} |
| */ |
| private int mDebugBrightnessBucket = -1; |
| |
| @Inject |
| public DozeScreenBrightness( |
| Context context, |
| @WrappedService DozeMachine.Service service, |
| AsyncSensorManager sensorManager, |
| @BrightnessSensor Optional<Sensor>[] lightSensorOptional, |
| DozeHost host, Handler handler, |
| AlwaysOnDisplayPolicy alwaysOnDisplayPolicy, |
| WakefulnessLifecycle wakefulnessLifecycle, |
| DozeParameters dozeParameters, |
| DevicePostureController devicePostureController, |
| DozeLog dozeLog) { |
| mContext = context; |
| mDozeService = service; |
| mSensorManager = sensorManager; |
| mLightSensorOptional = lightSensorOptional; |
| mDevicePostureController = devicePostureController; |
| mDevicePosture = mDevicePostureController.getDevicePosture(); |
| mWakefulnessLifecycle = wakefulnessLifecycle; |
| mDozeParameters = dozeParameters; |
| mDozeHost = host; |
| mHandler = handler; |
| mDozeLog = dozeLog; |
| |
| mScreenBrightnessMinimumDimAmountFloat = context.getResources().getFloat( |
| R.dimen.config_screenBrightnessMinimumDimAmountFloat); |
| |
| mDefaultDozeBrightness = alwaysOnDisplayPolicy.defaultDozeBrightness; |
| mScreenBrightnessDim = alwaysOnDisplayPolicy.dimBrightness; |
| mSensorToBrightness = alwaysOnDisplayPolicy.screenBrightnessArray; |
| mSensorToScrimOpacity = alwaysOnDisplayPolicy.dimmingScrimArray; |
| |
| mDevicePostureController.addCallback(mDevicePostureCallback); |
| } |
| |
| @Override |
| public void transitionTo(DozeMachine.State oldState, DozeMachine.State newState) { |
| mState = newState; |
| switch (newState) { |
| case INITIALIZED: |
| resetBrightnessToDefault(); |
| break; |
| case DOZE_AOD: |
| case DOZE_REQUEST_PULSE: |
| case DOZE_AOD_DOCKED: |
| setLightSensorEnabled(true); |
| break; |
| case DOZE: |
| setLightSensorEnabled(false); |
| resetBrightnessToDefault(); |
| break; |
| case DOZE_AOD_PAUSED: |
| setLightSensorEnabled(false); |
| break; |
| case FINISH: |
| onDestroy(); |
| break; |
| } |
| if (newState != DozeMachine.State.FINISH) { |
| setScreenOff(newState == DozeMachine.State.DOZE); |
| setPaused(newState == DozeMachine.State.DOZE_AOD_PAUSED); |
| } |
| } |
| |
| private void onDestroy() { |
| setLightSensorEnabled(false); |
| mDevicePostureController.removeCallback(mDevicePostureCallback); |
| } |
| |
| @Override |
| public void onSensorChanged(SensorEvent event) { |
| Trace.beginSection("DozeScreenBrightness.onSensorChanged" + event.values[0]); |
| try { |
| if (mRegistered) { |
| mLastSensorValue = (int) event.values[0]; |
| updateBrightnessAndReady(false /* force */); |
| } |
| } finally { |
| Trace.endSection(); |
| } |
| } |
| |
| public void updateBrightnessAndReady(boolean force) { |
| if (force || mRegistered || mDebugBrightnessBucket != -1) { |
| int sensorValue = mDebugBrightnessBucket == -1 |
| ? mLastSensorValue : mDebugBrightnessBucket; |
| int brightness = computeBrightness(sensorValue); |
| boolean brightnessReady = brightness > 0; |
| if (brightnessReady) { |
| mDozeService.setDozeScreenBrightness( |
| clampToDimBrightnessForScreenOff(clampToUserSetting(brightness))); |
| } |
| |
| int scrimOpacity = -1; |
| if (!isLightSensorPresent()) { |
| // No light sensor, scrims are always transparent. |
| scrimOpacity = 0; |
| } else if (brightnessReady) { |
| // Only unblank scrim once brightness is ready. |
| scrimOpacity = computeScrimOpacity(sensorValue); |
| } |
| if (scrimOpacity >= 0) { |
| mDozeHost.setAodDimmingScrim(scrimOpacity / 255f); |
| } |
| } |
| } |
| |
| private boolean lightSensorSupportsCurrentPosture() { |
| return mLightSensorOptional != null |
| && mDevicePosture < mLightSensorOptional.length; |
| } |
| |
| private boolean isLightSensorPresent() { |
| if (!lightSensorSupportsCurrentPosture()) { |
| return mLightSensorOptional != null && mLightSensorOptional[0].isPresent(); |
| } |
| |
| return mLightSensorOptional[mDevicePosture].isPresent(); |
| } |
| |
| private Sensor getLightSensor() { |
| if (!lightSensorSupportsCurrentPosture()) { |
| return null; |
| } |
| |
| return mLightSensorOptional[mDevicePosture].get(); |
| } |
| |
| private int computeScrimOpacity(int sensorValue) { |
| if (sensorValue < 0 || sensorValue >= mSensorToScrimOpacity.length) { |
| return -1; |
| } |
| return mSensorToScrimOpacity[sensorValue]; |
| } |
| |
| private int computeBrightness(int sensorValue) { |
| if (sensorValue < 0 || sensorValue >= mSensorToBrightness.length) { |
| return -1; |
| } |
| return mSensorToBrightness[sensorValue]; |
| } |
| |
| @Override |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| } |
| |
| private void resetBrightnessToDefault() { |
| mDozeService.setDozeScreenBrightness( |
| clampToDimBrightnessForScreenOff( |
| clampToUserSetting(mDefaultDozeBrightness))); |
| mDozeHost.setAodDimmingScrim(0f); |
| } |
| //TODO: brightnessfloat change usages to float. |
| private int clampToUserSetting(int brightness) { |
| int userSetting = Settings.System.getIntForUser(mContext.getContentResolver(), |
| Settings.System.SCREEN_BRIGHTNESS, Integer.MAX_VALUE, |
| UserHandle.USER_CURRENT); |
| return Math.min(brightness, userSetting); |
| } |
| |
| /** |
| * Clamp the brightness to the dim brightness value used by PowerManagerService just before the |
| * device times out and goes to sleep, if we are sleeping from a timeout. This ensures that we |
| * don't raise the brightness back to the user setting before or during the screen off |
| * animation. |
| */ |
| private int clampToDimBrightnessForScreenOff(int brightness) { |
| final boolean screenTurningOff = |
| (mDozeParameters.shouldClampToDimBrightness() |
| || mWakefulnessLifecycle.getWakefulness() == WAKEFULNESS_GOING_TO_SLEEP) |
| && mState == DozeMachine.State.INITIALIZED; |
| if (screenTurningOff |
| && mWakefulnessLifecycle.getLastSleepReason() == GO_TO_SLEEP_REASON_TIMEOUT) { |
| return Math.max( |
| PowerManager.BRIGHTNESS_OFF, |
| // Use the lower of either the dim brightness, or the current brightness reduced |
| // by the minimum dim amount. This is the same logic used in |
| // DisplayPowerController#updatePowerState to apply a minimum dim amount. |
| Math.min( |
| brightness - (int) Math.floor( |
| mScreenBrightnessMinimumDimAmountFloat * 255), |
| mScreenBrightnessDim)); |
| } else { |
| return brightness; |
| } |
| } |
| |
| private void setLightSensorEnabled(boolean enabled) { |
| if (enabled && !mRegistered && isLightSensorPresent()) { |
| // Wait until we get an event from the sensor until indicating ready. |
| mRegistered = mSensorManager.registerListener(this, getLightSensor(), |
| SensorManager.SENSOR_DELAY_NORMAL, mHandler); |
| mLastSensorValue = -1; |
| } else if (!enabled && mRegistered) { |
| mSensorManager.unregisterListener(this); |
| mRegistered = false; |
| mLastSensorValue = -1; |
| // Sensor is not enabled, hence we use the default brightness and are always ready. |
| } |
| } |
| |
| private void setPaused(boolean paused) { |
| if (mPaused != paused) { |
| mPaused = paused; |
| updateBrightnessAndReady(false /* force */); |
| } |
| } |
| |
| private void setScreenOff(boolean screenOff) { |
| if (mScreenOff != screenOff) { |
| mScreenOff = screenOff; |
| updateBrightnessAndReady(true /* force */); |
| } |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| mDebugBrightnessBucket = intent.getIntExtra(BRIGHTNESS_BUCKET, -1); |
| updateBrightnessAndReady(false /* force */); |
| } |
| |
| /** Dump current state */ |
| public void dump(PrintWriter pw) { |
| pw.println("DozeScreenBrightness:"); |
| IndentingPrintWriter idpw = new IndentingPrintWriter(pw); |
| idpw.increaseIndent(); |
| idpw.println("registered=" + mRegistered); |
| idpw.println("posture=" + DevicePostureController.devicePostureToString(mDevicePosture)); |
| } |
| |
| private final DevicePostureController.Callback mDevicePostureCallback = |
| new DevicePostureController.Callback() { |
| @Override |
| public void onPostureChanged(int posture) { |
| if (mDevicePosture == posture |
| || mLightSensorOptional.length < 2 |
| || posture >= mLightSensorOptional.length) { |
| return; |
| } |
| |
| final Sensor oldSensor = mLightSensorOptional[mDevicePosture].get(); |
| final Sensor newSensor = mLightSensorOptional[posture].get(); |
| if (Objects.equals(oldSensor, newSensor)) { |
| mDevicePosture = posture; |
| // uses the same sensor for the new posture |
| return; |
| } |
| |
| // cancel the previous sensor: |
| if (mRegistered) { |
| setLightSensorEnabled(false); |
| mDevicePosture = posture; |
| setLightSensorEnabled(true); |
| } else { |
| mDevicePosture = posture; |
| } |
| mDozeLog.tracePostureChanged(mDevicePosture, "DozeScreenBrightness swap " |
| + "{" + oldSensor + "} => {" + newSensor + "}, mRegistered=" + mRegistered); |
| } |
| }; |
| } |