| /* |
| * Copyright (C) 2012 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.power; |
| |
| import com.android.server.LightsService; |
| import com.android.server.TwilightService; |
| import com.android.server.TwilightService.TwilightState; |
| |
| import android.animation.Animator; |
| import android.animation.ObjectAnimator; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.hardware.Sensor; |
| import android.hardware.SensorEvent; |
| import android.hardware.SensorEventListener; |
| import android.hardware.SensorManager; |
| import android.hardware.SystemSensorManager; |
| import android.hardware.display.DisplayManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.SystemClock; |
| import android.text.format.DateUtils; |
| import android.util.FloatMath; |
| import android.util.Slog; |
| import android.util.Spline; |
| import android.util.TimeUtils; |
| import android.view.Display; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Controls the power state of the display. |
| * |
| * Handles the proximity sensor, light sensor, and animations between states |
| * including the screen off animation. |
| * |
| * This component acts independently of the rest of the power manager service. |
| * In particular, it does not share any state and it only communicates |
| * via asynchronous callbacks to inform the power manager that something has |
| * changed. |
| * |
| * Everything this class does internally is serialized on its handler although |
| * it may be accessed by other threads from the outside. |
| * |
| * Note that the power manager service guarantees that it will hold a suspend |
| * blocker as long as the display is not ready. So most of the work done here |
| * does not need to worry about holding a suspend blocker unless it happens |
| * independently of the display ready signal. |
| * |
| * For debugging, you can make the electron beam and brightness animations run |
| * slower by changing the "animator duration scale" option in Development Settings. |
| */ |
| final class DisplayPowerController { |
| private static final String TAG = "DisplayPowerController"; |
| |
| private static boolean DEBUG = false; |
| private static final boolean DEBUG_PRETEND_PROXIMITY_SENSOR_ABSENT = false; |
| private static final boolean DEBUG_PRETEND_LIGHT_SENSOR_ABSENT = false; |
| |
| // If true, uses the electron beam on animation. |
| // We might want to turn this off if we cannot get a guarantee that the screen |
| // actually turns on and starts showing new content after the call to set the |
| // screen state returns. Playing the animation can also be somewhat slow. |
| private static final boolean USE_ELECTRON_BEAM_ON_ANIMATION = false; |
| |
| // If true, enables the use of the screen auto-brightness adjustment setting. |
| private static final boolean USE_SCREEN_AUTO_BRIGHTNESS_ADJUSTMENT = |
| PowerManager.useScreenAutoBrightnessAdjustmentFeature(); |
| |
| // The maximum range of gamma adjustment possible using the screen |
| // auto-brightness adjustment setting. |
| private static final float SCREEN_AUTO_BRIGHTNESS_ADJUSTMENT_MAX_GAMMA = 3.0f; |
| |
| // The minimum reduction in brightness when dimmed. |
| private static final int SCREEN_DIM_MINIMUM_REDUCTION = 10; |
| |
| // If true, enables the use of the current time as an auto-brightness adjustment. |
| // The basic idea here is to expand the dynamic range of auto-brightness |
| // when it is especially dark outside. The light sensor tends to perform |
| // poorly at low light levels so we compensate for it by making an |
| // assumption about the environment. |
| private static final boolean USE_TWILIGHT_ADJUSTMENT = |
| PowerManager.useTwilightAdjustmentFeature(); |
| |
| // Specifies the maximum magnitude of the time of day adjustment. |
| private static final float TWILIGHT_ADJUSTMENT_MAX_GAMMA = 1.5f; |
| |
| // The amount of time after or before sunrise over which to start adjusting |
| // the gamma. We want the change to happen gradually so that it is below the |
| // threshold of perceptibility and so that the adjustment has maximum effect |
| // well after dusk. |
| private static final long TWILIGHT_ADJUSTMENT_TIME = DateUtils.HOUR_IN_MILLIS * 2; |
| |
| private static final int ELECTRON_BEAM_ON_ANIMATION_DURATION_MILLIS = 250; |
| private static final int ELECTRON_BEAM_OFF_ANIMATION_DURATION_MILLIS = 400; |
| |
| private static final int MSG_UPDATE_POWER_STATE = 1; |
| private static final int MSG_PROXIMITY_SENSOR_DEBOUNCED = 2; |
| private static final int MSG_LIGHT_SENSOR_DEBOUNCED = 3; |
| |
| private static final int PROXIMITY_UNKNOWN = -1; |
| private static final int PROXIMITY_NEGATIVE = 0; |
| private static final int PROXIMITY_POSITIVE = 1; |
| |
| // Proximity sensor debounce delay in milliseconds for positive or negative transitions. |
| private static final int PROXIMITY_SENSOR_POSITIVE_DEBOUNCE_DELAY = 0; |
| private static final int PROXIMITY_SENSOR_NEGATIVE_DEBOUNCE_DELAY = 500; |
| |
| // Trigger proximity if distance is less than 5 cm. |
| private static final float TYPICAL_PROXIMITY_THRESHOLD = 5.0f; |
| |
| // Light sensor event rate in milliseconds. |
| private static final int LIGHT_SENSOR_RATE_MILLIS = 1000; |
| |
| // A rate for generating synthetic light sensor events in the case where the light |
| // sensor hasn't reported any new data in a while and we need it to update the |
| // debounce filter. We only synthesize light sensor measurements when needed. |
| private static final int SYNTHETIC_LIGHT_SENSOR_RATE_MILLIS = |
| LIGHT_SENSOR_RATE_MILLIS * 2; |
| |
| // Brightness animation ramp rate in brightness units per second. |
| private static final int BRIGHTNESS_RAMP_RATE_FAST = 200; |
| private static final int BRIGHTNESS_RAMP_RATE_SLOW = 40; |
| |
| // IIR filter time constants in milliseconds for computing two moving averages of |
| // the light samples. One is a long-term average and the other is a short-term average. |
| // We can use these filters to assess trends in ambient brightness. |
| // The short term average gives us a filtered but relatively low latency measurement. |
| // The long term average informs us about the overall trend. |
| private static final long SHORT_TERM_AVERAGE_LIGHT_TIME_CONSTANT = 1000; |
| private static final long LONG_TERM_AVERAGE_LIGHT_TIME_CONSTANT = 5000; |
| |
| // Stability requirements in milliseconds for accepting a new brightness |
| // level. This is used for debouncing the light sensor. Different constants |
| // are used to debounce the light sensor when adapting to brighter or darker environments. |
| // This parameter controls how quickly brightness changes occur in response to |
| // an observed change in light level that exceeds the hysteresis threshold. |
| private static final long BRIGHTENING_LIGHT_DEBOUNCE = 4000; |
| private static final long DARKENING_LIGHT_DEBOUNCE = 8000; |
| |
| // Hysteresis constraints for brightening or darkening. |
| // The recent lux must have changed by at least this fraction relative to the |
| // current ambient lux before a change will be considered. |
| private static final float BRIGHTENING_LIGHT_HYSTERESIS = 0.10f; |
| private static final float DARKENING_LIGHT_HYSTERESIS = 0.20f; |
| |
| private final Object mLock = new Object(); |
| |
| // Notifier for sending asynchronous notifications. |
| private final Notifier mNotifier; |
| |
| // The display blanker. |
| private final DisplayBlanker mDisplayBlanker; |
| |
| // Our handler. |
| private final DisplayControllerHandler mHandler; |
| |
| // Asynchronous callbacks into the power manager service. |
| // Only invoked from the handler thread while no locks are held. |
| private final Callbacks mCallbacks; |
| private Handler mCallbackHandler; |
| |
| // The lights service. |
| private final LightsService mLights; |
| |
| // The twilight service. |
| private final TwilightService mTwilight; |
| |
| // The display manager. |
| private final DisplayManager mDisplayManager; |
| |
| // The sensor manager. |
| private final SensorManager mSensorManager; |
| |
| // The proximity sensor, or null if not available or needed. |
| private Sensor mProximitySensor; |
| |
| // The light sensor, or null if not available or needed. |
| private Sensor mLightSensor; |
| |
| // The dim screen brightness. |
| private final int mScreenBrightnessDimConfig; |
| |
| // The minimum allowed brightness. |
| private final int mScreenBrightnessRangeMinimum; |
| |
| // The maximum allowed brightness. |
| private final int mScreenBrightnessRangeMaximum; |
| |
| // True if auto-brightness should be used. |
| private boolean mUseSoftwareAutoBrightnessConfig; |
| |
| // The auto-brightness spline adjustment. |
| // The brightness values have been scaled to a range of 0..1. |
| private Spline mScreenAutoBrightnessSpline; |
| |
| // Amount of time to delay auto-brightness after screen on while waiting for |
| // the light sensor to warm-up in milliseconds. |
| // May be 0 if no warm-up is required. |
| private int mLightSensorWarmUpTimeConfig; |
| |
| // True if we should fade the screen while turning it off, false if we should play |
| // a stylish electron beam animation instead. |
| private boolean mElectronBeamFadesConfig; |
| |
| // The pending power request. |
| // Initially null until the first call to requestPowerState. |
| // Guarded by mLock. |
| private DisplayPowerRequest mPendingRequestLocked; |
| |
| // True if a request has been made to wait for the proximity sensor to go negative. |
| // Guarded by mLock. |
| private boolean mPendingWaitForNegativeProximityLocked; |
| |
| // True if the pending power request or wait for negative proximity flag |
| // has been changed since the last update occurred. |
| // Guarded by mLock. |
| private boolean mPendingRequestChangedLocked; |
| |
| // Set to true when the important parts of the pending power request have been applied. |
| // The important parts are mainly the screen state. Brightness changes may occur |
| // concurrently. |
| // Guarded by mLock. |
| private boolean mDisplayReadyLocked; |
| |
| // Set to true if a power state update is required. |
| // Guarded by mLock. |
| private boolean mPendingUpdatePowerStateLocked; |
| |
| /* The following state must only be accessed by the handler thread. */ |
| |
| // The currently requested power state. |
| // The power controller will progressively update its internal state to match |
| // the requested power state. Initially null until the first update. |
| private DisplayPowerRequest mPowerRequest; |
| |
| // The current power state. |
| // Must only be accessed on the handler thread. |
| private DisplayPowerState mPowerState; |
| |
| // True if the device should wait for negative proximity sensor before |
| // waking up the screen. This is set to false as soon as a negative |
| // proximity sensor measurement is observed or when the device is forced to |
| // go to sleep by the user. While true, the screen remains off. |
| private boolean mWaitingForNegativeProximity; |
| |
| // The actual proximity sensor threshold value. |
| private float mProximityThreshold; |
| |
| // Set to true if the proximity sensor listener has been registered |
| // with the sensor manager. |
| private boolean mProximitySensorEnabled; |
| |
| // The debounced proximity sensor state. |
| private int mProximity = PROXIMITY_UNKNOWN; |
| |
| // The raw non-debounced proximity sensor state. |
| private int mPendingProximity = PROXIMITY_UNKNOWN; |
| private long mPendingProximityDebounceTime; |
| |
| // True if the screen was turned off because of the proximity sensor. |
| // When the screen turns on again, we report user activity to the power manager. |
| private boolean mScreenOffBecauseOfProximity; |
| |
| // True if the screen on is being blocked. |
| private boolean mScreenOnWasBlocked; |
| |
| // The elapsed real time when the screen on was blocked. |
| private long mScreenOnBlockStartRealTime; |
| |
| // Set to true if the light sensor is enabled. |
| private boolean mLightSensorEnabled; |
| |
| // The time when the light sensor was enabled. |
| private long mLightSensorEnableTime; |
| |
| // The currently accepted nominal ambient light level. |
| private float mAmbientLux; |
| |
| // True if mAmbientLux holds a valid value. |
| private boolean mAmbientLuxValid; |
| |
| // The most recent light sample. |
| private float mLastObservedLux; |
| |
| // The time of the most light recent sample. |
| private long mLastObservedLuxTime; |
| |
| // The number of light samples collected since the light sensor was enabled. |
| private int mRecentLightSamples; |
| |
| // The long-term and short-term filtered light measurements. |
| private float mRecentShortTermAverageLux; |
| private float mRecentLongTermAverageLux; |
| |
| // The direction in which the average lux is moving relative to the current ambient lux. |
| // 0 if not changing or within hysteresis threshold. |
| // 1 if brightening beyond hysteresis threshold. |
| // -1 if darkening beyond hysteresis threshold. |
| private int mDebounceLuxDirection; |
| |
| // The time when the average lux last changed direction. |
| private long mDebounceLuxTime; |
| |
| // The screen brightness level that has been chosen by the auto-brightness |
| // algorithm. The actual brightness should ramp towards this value. |
| // We preserve this value even when we stop using the light sensor so |
| // that we can quickly revert to the previous auto-brightness level |
| // while the light sensor warms up. |
| // Use -1 if there is no current auto-brightness value available. |
| private int mScreenAutoBrightness = -1; |
| |
| // The last screen auto-brightness gamma. (For printing in dump() only.) |
| private float mLastScreenAutoBrightnessGamma = 1.0f; |
| |
| // True if the screen auto-brightness value is actually being used to |
| // set the display brightness. |
| private boolean mUsingScreenAutoBrightness; |
| |
| // Animators. |
| private ObjectAnimator mElectronBeamOnAnimator; |
| private ObjectAnimator mElectronBeamOffAnimator; |
| private RampAnimator<DisplayPowerState> mScreenBrightnessRampAnimator; |
| |
| // Twilight changed. We might recalculate auto-brightness values. |
| private boolean mTwilightChanged; |
| |
| /** |
| * Creates the display power controller. |
| */ |
| public DisplayPowerController(Looper looper, Context context, Notifier notifier, |
| LightsService lights, TwilightService twilight, |
| DisplayBlanker displayBlanker, |
| Callbacks callbacks, Handler callbackHandler) { |
| mHandler = new DisplayControllerHandler(looper); |
| mNotifier = notifier; |
| mDisplayBlanker = displayBlanker; |
| mCallbacks = callbacks; |
| mCallbackHandler = callbackHandler; |
| |
| mLights = lights; |
| mTwilight = twilight; |
| mSensorManager = new SystemSensorManager(mHandler.getLooper()); |
| mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); |
| |
| final Resources resources = context.getResources(); |
| |
| mScreenBrightnessDimConfig = clampAbsoluteBrightness(resources.getInteger( |
| com.android.internal.R.integer.config_screenBrightnessDim)); |
| |
| int screenBrightnessMinimum = Math.min(resources.getInteger( |
| com.android.internal.R.integer.config_screenBrightnessSettingMinimum), |
| mScreenBrightnessDimConfig); |
| |
| mUseSoftwareAutoBrightnessConfig = resources.getBoolean( |
| com.android.internal.R.bool.config_automatic_brightness_available); |
| if (mUseSoftwareAutoBrightnessConfig) { |
| int[] lux = resources.getIntArray( |
| com.android.internal.R.array.config_autoBrightnessLevels); |
| int[] screenBrightness = resources.getIntArray( |
| com.android.internal.R.array.config_autoBrightnessLcdBacklightValues); |
| |
| mScreenAutoBrightnessSpline = createAutoBrightnessSpline(lux, screenBrightness); |
| if (mScreenAutoBrightnessSpline == null) { |
| Slog.e(TAG, "Error in config.xml. config_autoBrightnessLcdBacklightValues " |
| + "(size " + screenBrightness.length + ") " |
| + "must be monotic and have exactly one more entry than " |
| + "config_autoBrightnessLevels (size " + lux.length + ") " |
| + "which must be strictly increasing. " |
| + "Auto-brightness will be disabled."); |
| mUseSoftwareAutoBrightnessConfig = false; |
| } else { |
| if (screenBrightness[0] < screenBrightnessMinimum) { |
| screenBrightnessMinimum = screenBrightness[0]; |
| } |
| } |
| |
| mLightSensorWarmUpTimeConfig = resources.getInteger( |
| com.android.internal.R.integer.config_lightSensorWarmupTime); |
| } |
| |
| mScreenBrightnessRangeMinimum = clampAbsoluteBrightness(screenBrightnessMinimum); |
| mScreenBrightnessRangeMaximum = PowerManager.BRIGHTNESS_ON; |
| |
| mElectronBeamFadesConfig = resources.getBoolean( |
| com.android.internal.R.bool.config_animateScreenLights); |
| |
| if (!DEBUG_PRETEND_PROXIMITY_SENSOR_ABSENT) { |
| mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); |
| if (mProximitySensor != null) { |
| mProximityThreshold = Math.min(mProximitySensor.getMaximumRange(), |
| TYPICAL_PROXIMITY_THRESHOLD); |
| } |
| } |
| |
| if (mUseSoftwareAutoBrightnessConfig |
| && !DEBUG_PRETEND_LIGHT_SENSOR_ABSENT) { |
| mLightSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT); |
| } |
| |
| if (mUseSoftwareAutoBrightnessConfig && USE_TWILIGHT_ADJUSTMENT) { |
| mTwilight.registerListener(mTwilightListener, mHandler); |
| } |
| } |
| |
| private static Spline createAutoBrightnessSpline(int[] lux, int[] brightness) { |
| try { |
| final int n = brightness.length; |
| float[] x = new float[n]; |
| float[] y = new float[n]; |
| y[0] = normalizeAbsoluteBrightness(brightness[0]); |
| for (int i = 1; i < n; i++) { |
| x[i] = lux[i - 1]; |
| y[i] = normalizeAbsoluteBrightness(brightness[i]); |
| } |
| |
| Spline spline = Spline.createMonotoneCubicSpline(x, y); |
| if (DEBUG) { |
| Slog.d(TAG, "Auto-brightness spline: " + spline); |
| for (float v = 1f; v < lux[lux.length - 1] * 1.25f; v *= 1.25f) { |
| Slog.d(TAG, String.format(" %7.1f: %7.1f", v, spline.interpolate(v))); |
| } |
| } |
| return spline; |
| } catch (IllegalArgumentException ex) { |
| Slog.e(TAG, "Could not create auto-brightness spline.", ex); |
| return null; |
| } |
| } |
| |
| /** |
| * Returns true if the proximity sensor screen-off function is available. |
| */ |
| public boolean isProximitySensorAvailable() { |
| return mProximitySensor != null; |
| } |
| |
| /** |
| * Requests a new power state. |
| * The controller makes a copy of the provided object and then |
| * begins adjusting the power state to match what was requested. |
| * |
| * @param request The requested power state. |
| * @param waitForNegativeProximity If true, issues a request to wait for |
| * negative proximity before turning the screen back on, assuming the screen |
| * was turned off by the proximity sensor. |
| * @return True if display is ready, false if there are important changes that must |
| * be made asynchronously (such as turning the screen on), in which case the caller |
| * should grab a wake lock, watch for {@link Callbacks#onStateChanged()} then try |
| * the request again later until the state converges. |
| */ |
| public boolean requestPowerState(DisplayPowerRequest request, |
| boolean waitForNegativeProximity) { |
| if (DEBUG) { |
| Slog.d(TAG, "requestPowerState: " |
| + request + ", waitForNegativeProximity=" + waitForNegativeProximity); |
| } |
| |
| synchronized (mLock) { |
| boolean changed = false; |
| |
| if (waitForNegativeProximity |
| && !mPendingWaitForNegativeProximityLocked) { |
| mPendingWaitForNegativeProximityLocked = true; |
| changed = true; |
| } |
| |
| if (mPendingRequestLocked == null) { |
| mPendingRequestLocked = new DisplayPowerRequest(request); |
| changed = true; |
| } else if (!mPendingRequestLocked.equals(request)) { |
| mPendingRequestLocked.copyFrom(request); |
| changed = true; |
| } |
| |
| if (changed) { |
| mDisplayReadyLocked = false; |
| } |
| |
| if (changed && !mPendingRequestChangedLocked) { |
| mPendingRequestChangedLocked = true; |
| sendUpdatePowerStateLocked(); |
| } |
| |
| return mDisplayReadyLocked; |
| } |
| } |
| |
| private void sendUpdatePowerState() { |
| synchronized (mLock) { |
| sendUpdatePowerStateLocked(); |
| } |
| } |
| |
| private void sendUpdatePowerStateLocked() { |
| if (!mPendingUpdatePowerStateLocked) { |
| mPendingUpdatePowerStateLocked = true; |
| Message msg = mHandler.obtainMessage(MSG_UPDATE_POWER_STATE); |
| msg.setAsynchronous(true); |
| mHandler.sendMessage(msg); |
| } |
| } |
| |
| private void initialize() { |
| Display display = mDisplayManager.getDisplay(Display.DEFAULT_DISPLAY); |
| mPowerState = new DisplayPowerState( |
| new ElectronBeam(display), mDisplayBlanker, |
| mLights.getLight(LightsService.LIGHT_ID_BACKLIGHT)); |
| |
| mElectronBeamOnAnimator = ObjectAnimator.ofFloat( |
| mPowerState, DisplayPowerState.ELECTRON_BEAM_LEVEL, 0.0f, 1.0f); |
| mElectronBeamOnAnimator.setDuration(ELECTRON_BEAM_ON_ANIMATION_DURATION_MILLIS); |
| mElectronBeamOnAnimator.addListener(mAnimatorListener); |
| |
| mElectronBeamOffAnimator = ObjectAnimator.ofFloat( |
| mPowerState, DisplayPowerState.ELECTRON_BEAM_LEVEL, 1.0f, 0.0f); |
| mElectronBeamOffAnimator.setDuration(ELECTRON_BEAM_OFF_ANIMATION_DURATION_MILLIS); |
| mElectronBeamOffAnimator.addListener(mAnimatorListener); |
| |
| mScreenBrightnessRampAnimator = new RampAnimator<DisplayPowerState>( |
| mPowerState, DisplayPowerState.SCREEN_BRIGHTNESS); |
| } |
| |
| private final Animator.AnimatorListener mAnimatorListener = new Animator.AnimatorListener() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| } |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| sendUpdatePowerState(); |
| } |
| @Override |
| public void onAnimationRepeat(Animator animation) { |
| } |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| } |
| }; |
| |
| private void updatePowerState() { |
| // Update the power state request. |
| final boolean mustNotify; |
| boolean mustInitialize = false; |
| boolean updateAutoBrightness = mTwilightChanged; |
| boolean wasDim = false; |
| mTwilightChanged = false; |
| |
| synchronized (mLock) { |
| mPendingUpdatePowerStateLocked = false; |
| if (mPendingRequestLocked == null) { |
| return; // wait until first actual power request |
| } |
| |
| if (mPowerRequest == null) { |
| mPowerRequest = new DisplayPowerRequest(mPendingRequestLocked); |
| mWaitingForNegativeProximity = mPendingWaitForNegativeProximityLocked; |
| mPendingWaitForNegativeProximityLocked = false; |
| mPendingRequestChangedLocked = false; |
| mustInitialize = true; |
| } else if (mPendingRequestChangedLocked) { |
| if (mPowerRequest.screenAutoBrightnessAdjustment |
| != mPendingRequestLocked.screenAutoBrightnessAdjustment) { |
| updateAutoBrightness = true; |
| } |
| wasDim = (mPowerRequest.screenState == DisplayPowerRequest.SCREEN_STATE_DIM); |
| mPowerRequest.copyFrom(mPendingRequestLocked); |
| mWaitingForNegativeProximity |= mPendingWaitForNegativeProximityLocked; |
| mPendingWaitForNegativeProximityLocked = false; |
| mPendingRequestChangedLocked = false; |
| mDisplayReadyLocked = false; |
| } |
| |
| mustNotify = !mDisplayReadyLocked; |
| } |
| |
| // Initialize things the first time the power state is changed. |
| if (mustInitialize) { |
| initialize(); |
| } |
| |
| // Apply the proximity sensor. |
| if (mProximitySensor != null) { |
| if (mPowerRequest.useProximitySensor |
| && mPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { |
| setProximitySensorEnabled(true); |
| if (!mScreenOffBecauseOfProximity |
| && mProximity == PROXIMITY_POSITIVE) { |
| mScreenOffBecauseOfProximity = true; |
| sendOnProximityPositive(); |
| setScreenOn(false); |
| } |
| } else if (mWaitingForNegativeProximity |
| && mScreenOffBecauseOfProximity |
| && mProximity == PROXIMITY_POSITIVE |
| && mPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { |
| setProximitySensorEnabled(true); |
| } else { |
| setProximitySensorEnabled(false); |
| mWaitingForNegativeProximity = false; |
| } |
| if (mScreenOffBecauseOfProximity |
| && mProximity != PROXIMITY_POSITIVE) { |
| mScreenOffBecauseOfProximity = false; |
| sendOnProximityNegative(); |
| } |
| } else { |
| mWaitingForNegativeProximity = false; |
| } |
| |
| // Turn on the light sensor if needed. |
| if (mLightSensor != null) { |
| setLightSensorEnabled(mPowerRequest.useAutoBrightness |
| && wantScreenOn(mPowerRequest.screenState), updateAutoBrightness); |
| } |
| |
| // Set the screen brightness. |
| if (wantScreenOn(mPowerRequest.screenState)) { |
| int target; |
| boolean slow; |
| if (mScreenAutoBrightness >= 0 && mLightSensorEnabled) { |
| // Use current auto-brightness value. |
| target = mScreenAutoBrightness; |
| slow = mUsingScreenAutoBrightness; |
| mUsingScreenAutoBrightness = true; |
| } else { |
| // Light sensor is disabled or not ready yet. |
| // Use the current brightness setting from the request, which is expected |
| // provide a nominal default value for the case where auto-brightness |
| // is not ready yet. |
| target = mPowerRequest.screenBrightness; |
| slow = false; |
| mUsingScreenAutoBrightness = false; |
| } |
| if (mPowerRequest.screenState == DisplayPowerRequest.SCREEN_STATE_DIM) { |
| // Dim quickly by at least some minimum amount. |
| target = Math.min(target - SCREEN_DIM_MINIMUM_REDUCTION, |
| mScreenBrightnessDimConfig); |
| slow = false; |
| } else if (wasDim) { |
| // Brighten quickly. |
| slow = false; |
| } |
| animateScreenBrightness(clampScreenBrightness(target), |
| slow ? BRIGHTNESS_RAMP_RATE_SLOW : BRIGHTNESS_RAMP_RATE_FAST); |
| } else { |
| // Screen is off. Don't bother changing the brightness. |
| mUsingScreenAutoBrightness = false; |
| } |
| |
| // Animate the screen on or off. |
| if (!mScreenOffBecauseOfProximity) { |
| if (wantScreenOn(mPowerRequest.screenState)) { |
| // Want screen on. |
| // Wait for previous off animation to complete beforehand. |
| // It is relatively short but if we cancel it and switch to the |
| // on animation immediately then the results are pretty ugly. |
| if (!mElectronBeamOffAnimator.isStarted()) { |
| // Turn the screen on. The contents of the screen may not yet |
| // be visible if the electron beam has not been dismissed because |
| // its last frame of animation is solid black. |
| setScreenOn(true); |
| |
| if (mPowerRequest.blockScreenOn |
| && mPowerState.getElectronBeamLevel() == 0.0f) { |
| blockScreenOn(); |
| } else { |
| unblockScreenOn(); |
| if (USE_ELECTRON_BEAM_ON_ANIMATION) { |
| if (!mElectronBeamOnAnimator.isStarted()) { |
| if (mPowerState.getElectronBeamLevel() == 1.0f) { |
| mPowerState.dismissElectronBeam(); |
| } else if (mPowerState.prepareElectronBeam( |
| mElectronBeamFadesConfig ? |
| ElectronBeam.MODE_FADE : |
| ElectronBeam.MODE_WARM_UP)) { |
| mElectronBeamOnAnimator.start(); |
| } else { |
| mElectronBeamOnAnimator.end(); |
| } |
| } |
| } else { |
| mPowerState.setElectronBeamLevel(1.0f); |
| mPowerState.dismissElectronBeam(); |
| } |
| } |
| } |
| } else { |
| // Want screen off. |
| // Wait for previous on animation to complete beforehand. |
| if (!mElectronBeamOnAnimator.isStarted()) { |
| if (!mElectronBeamOffAnimator.isStarted()) { |
| if (mPowerState.getElectronBeamLevel() == 0.0f) { |
| setScreenOn(false); |
| } else if (mPowerState.prepareElectronBeam( |
| mElectronBeamFadesConfig ? |
| ElectronBeam.MODE_FADE : |
| ElectronBeam.MODE_COOL_DOWN) |
| && mPowerState.isScreenOn()) { |
| mElectronBeamOffAnimator.start(); |
| } else { |
| mElectronBeamOffAnimator.end(); |
| } |
| } |
| } |
| } |
| } |
| |
| // Report whether the display is ready for use. |
| // We mostly care about the screen state here, ignoring brightness changes |
| // which will be handled asynchronously. |
| if (mustNotify |
| && !mScreenOnWasBlocked |
| && !mElectronBeamOnAnimator.isStarted() |
| && !mElectronBeamOffAnimator.isStarted() |
| && mPowerState.waitUntilClean(mCleanListener)) { |
| synchronized (mLock) { |
| if (!mPendingRequestChangedLocked) { |
| mDisplayReadyLocked = true; |
| |
| if (DEBUG) { |
| Slog.d(TAG, "Display ready!"); |
| } |
| } |
| } |
| sendOnStateChanged(); |
| } |
| } |
| |
| private void blockScreenOn() { |
| if (!mScreenOnWasBlocked) { |
| mScreenOnWasBlocked = true; |
| if (DEBUG) { |
| Slog.d(TAG, "Blocked screen on."); |
| mScreenOnBlockStartRealTime = SystemClock.elapsedRealtime(); |
| } |
| } |
| } |
| |
| private void unblockScreenOn() { |
| if (mScreenOnWasBlocked) { |
| mScreenOnWasBlocked = false; |
| if (DEBUG) { |
| Slog.d(TAG, "Unblocked screen on after " + |
| (SystemClock.elapsedRealtime() - mScreenOnBlockStartRealTime) + " ms"); |
| } |
| } |
| } |
| |
| private void setScreenOn(boolean on) { |
| if (!mPowerState.isScreenOn() == on) { |
| mPowerState.setScreenOn(on); |
| if (on) { |
| mNotifier.onScreenOn(); |
| } else { |
| mNotifier.onScreenOff(); |
| } |
| } |
| } |
| |
| private int clampScreenBrightness(int value) { |
| return clamp(value, mScreenBrightnessRangeMinimum, mScreenBrightnessRangeMaximum); |
| } |
| |
| private static int clampAbsoluteBrightness(int value) { |
| return clamp(value, PowerManager.BRIGHTNESS_OFF, PowerManager.BRIGHTNESS_ON); |
| } |
| |
| private static int clamp(int value, int min, int max) { |
| if (value <= min) { |
| return min; |
| } |
| if (value >= max) { |
| return max; |
| } |
| return value; |
| } |
| |
| private static float normalizeAbsoluteBrightness(int value) { |
| return (float)clampAbsoluteBrightness(value) / PowerManager.BRIGHTNESS_ON; |
| } |
| |
| private void animateScreenBrightness(int target, int rate) { |
| if (mScreenBrightnessRampAnimator.animateTo(target, rate)) { |
| mNotifier.onScreenBrightness(target); |
| } |
| } |
| |
| private final Runnable mCleanListener = new Runnable() { |
| @Override |
| public void run() { |
| sendUpdatePowerState(); |
| } |
| }; |
| |
| private void setProximitySensorEnabled(boolean enable) { |
| if (enable) { |
| if (!mProximitySensorEnabled) { |
| mProximitySensorEnabled = true; |
| mPendingProximity = PROXIMITY_UNKNOWN; |
| mSensorManager.registerListener(mProximitySensorListener, mProximitySensor, |
| SensorManager.SENSOR_DELAY_NORMAL, mHandler); |
| } |
| } else { |
| if (mProximitySensorEnabled) { |
| mProximitySensorEnabled = false; |
| mProximity = PROXIMITY_UNKNOWN; |
| mHandler.removeMessages(MSG_PROXIMITY_SENSOR_DEBOUNCED); |
| mSensorManager.unregisterListener(mProximitySensorListener); |
| } |
| } |
| } |
| |
| private void handleProximitySensorEvent(long time, boolean positive) { |
| if (mPendingProximity == PROXIMITY_NEGATIVE && !positive) { |
| return; // no change |
| } |
| if (mPendingProximity == PROXIMITY_POSITIVE && positive) { |
| return; // no change |
| } |
| |
| // Only accept a proximity sensor reading if it remains |
| // stable for the entire debounce delay. |
| mHandler.removeMessages(MSG_PROXIMITY_SENSOR_DEBOUNCED); |
| if (positive) { |
| mPendingProximity = PROXIMITY_POSITIVE; |
| mPendingProximityDebounceTime = time + PROXIMITY_SENSOR_POSITIVE_DEBOUNCE_DELAY; |
| } else { |
| mPendingProximity = PROXIMITY_NEGATIVE; |
| mPendingProximityDebounceTime = time + PROXIMITY_SENSOR_NEGATIVE_DEBOUNCE_DELAY; |
| } |
| debounceProximitySensor(); |
| } |
| |
| private void debounceProximitySensor() { |
| if (mPendingProximity != PROXIMITY_UNKNOWN) { |
| final long now = SystemClock.uptimeMillis(); |
| if (mPendingProximityDebounceTime <= now) { |
| mProximity = mPendingProximity; |
| sendUpdatePowerState(); |
| } else { |
| Message msg = mHandler.obtainMessage(MSG_PROXIMITY_SENSOR_DEBOUNCED); |
| msg.setAsynchronous(true); |
| mHandler.sendMessageAtTime(msg, mPendingProximityDebounceTime); |
| } |
| } |
| } |
| |
| private void setLightSensorEnabled(boolean enable, boolean updateAutoBrightness) { |
| if (enable) { |
| if (!mLightSensorEnabled) { |
| updateAutoBrightness = true; |
| mLightSensorEnabled = true; |
| mLightSensorEnableTime = SystemClock.uptimeMillis(); |
| mSensorManager.registerListener(mLightSensorListener, mLightSensor, |
| LIGHT_SENSOR_RATE_MILLIS * 1000, mHandler); |
| } |
| } else { |
| if (mLightSensorEnabled) { |
| mLightSensorEnabled = false; |
| mAmbientLuxValid = false; |
| mRecentLightSamples = 0; |
| mHandler.removeMessages(MSG_LIGHT_SENSOR_DEBOUNCED); |
| mSensorManager.unregisterListener(mLightSensorListener); |
| } |
| } |
| if (updateAutoBrightness) { |
| updateAutoBrightness(false); |
| } |
| } |
| |
| private void handleLightSensorEvent(long time, float lux) { |
| mHandler.removeMessages(MSG_LIGHT_SENSOR_DEBOUNCED); |
| |
| applyLightSensorMeasurement(time, lux); |
| updateAmbientLux(time); |
| } |
| |
| private void applyLightSensorMeasurement(long time, float lux) { |
| // Update our filters. |
| mRecentLightSamples += 1; |
| if (mRecentLightSamples == 1) { |
| mRecentShortTermAverageLux = lux; |
| mRecentLongTermAverageLux = lux; |
| } else { |
| final long timeDelta = time - mLastObservedLuxTime; |
| mRecentShortTermAverageLux += (lux - mRecentShortTermAverageLux) |
| * timeDelta / (SHORT_TERM_AVERAGE_LIGHT_TIME_CONSTANT + timeDelta); |
| mRecentLongTermAverageLux += (lux - mRecentLongTermAverageLux) |
| * timeDelta / (LONG_TERM_AVERAGE_LIGHT_TIME_CONSTANT + timeDelta); |
| } |
| |
| // Remember this sample value. |
| mLastObservedLux = lux; |
| mLastObservedLuxTime = time; |
| } |
| |
| private void updateAmbientLux(long time) { |
| // If the light sensor was just turned on then immediately update our initial |
| // estimate of the current ambient light level. |
| if (!mAmbientLuxValid |
| || (time - mLightSensorEnableTime) < mLightSensorWarmUpTimeConfig) { |
| mAmbientLux = mRecentShortTermAverageLux; |
| mAmbientLuxValid = true; |
| mDebounceLuxDirection = 0; |
| mDebounceLuxTime = time; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Initializing: " |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| updateAutoBrightness(true); |
| return; |
| } |
| |
| // Determine whether the ambient environment appears to be brightening. |
| float brighteningLuxThreshold = mAmbientLux * (1.0f + BRIGHTENING_LIGHT_HYSTERESIS); |
| if (mRecentShortTermAverageLux > brighteningLuxThreshold |
| && mRecentLongTermAverageLux > brighteningLuxThreshold) { |
| if (mDebounceLuxDirection <= 0) { |
| mDebounceLuxDirection = 1; |
| mDebounceLuxTime = time; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Possibly brightened, waiting for " |
| + BRIGHTENING_LIGHT_DEBOUNCE + " ms: " |
| + "brighteningLuxThreshold=" + brighteningLuxThreshold |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| } |
| long debounceTime = mDebounceLuxTime + BRIGHTENING_LIGHT_DEBOUNCE; |
| if (time >= debounceTime) { |
| mAmbientLux = mRecentShortTermAverageLux; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Brightened: " |
| + "brighteningLuxThreshold=" + brighteningLuxThreshold |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| updateAutoBrightness(true); |
| } else { |
| mHandler.sendEmptyMessageAtTime(MSG_LIGHT_SENSOR_DEBOUNCED, debounceTime); |
| } |
| return; |
| } |
| |
| // Determine whether the ambient environment appears to be darkening. |
| float darkeningLuxThreshold = mAmbientLux * (1.0f - DARKENING_LIGHT_HYSTERESIS); |
| if (mRecentShortTermAverageLux < darkeningLuxThreshold |
| && mRecentLongTermAverageLux < darkeningLuxThreshold) { |
| if (mDebounceLuxDirection >= 0) { |
| mDebounceLuxDirection = -1; |
| mDebounceLuxTime = time; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Possibly darkened, waiting for " |
| + DARKENING_LIGHT_DEBOUNCE + " ms: " |
| + "darkeningLuxThreshold=" + darkeningLuxThreshold |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| } |
| long debounceTime = mDebounceLuxTime + DARKENING_LIGHT_DEBOUNCE; |
| if (time >= debounceTime) { |
| // Be conservative about reducing the brightness, only reduce it a little bit |
| // at a time to avoid having to bump it up again soon. |
| mAmbientLux = Math.max(mRecentShortTermAverageLux, mRecentLongTermAverageLux); |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Darkened: " |
| + "darkeningLuxThreshold=" + darkeningLuxThreshold |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| updateAutoBrightness(true); |
| } else { |
| mHandler.sendEmptyMessageAtTime(MSG_LIGHT_SENSOR_DEBOUNCED, debounceTime); |
| } |
| return; |
| } |
| |
| // No change or change is within the hysteresis thresholds. |
| if (mDebounceLuxDirection != 0) { |
| mDebounceLuxDirection = 0; |
| mDebounceLuxTime = time; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAmbientLux: Canceled debounce: " |
| + "brighteningLuxThreshold=" + brighteningLuxThreshold |
| + ", darkeningLuxThreshold=" + darkeningLuxThreshold |
| + ", mRecentShortTermAverageLux=" + mRecentShortTermAverageLux |
| + ", mRecentLongTermAverageLux=" + mRecentLongTermAverageLux |
| + ", mAmbientLux=" + mAmbientLux); |
| } |
| } |
| |
| // If the light level does not change, then the sensor may not report |
| // a new value. This can cause problems for the auto-brightness algorithm |
| // because the filters might not be updated. To work around it, we want to |
| // make sure to update the filters whenever the observed light level could |
| // possibly exceed one of the hysteresis thresholds. |
| if (mLastObservedLux > brighteningLuxThreshold |
| || mLastObservedLux < darkeningLuxThreshold) { |
| mHandler.sendEmptyMessageAtTime(MSG_LIGHT_SENSOR_DEBOUNCED, |
| time + SYNTHETIC_LIGHT_SENSOR_RATE_MILLIS); |
| } |
| } |
| |
| private void debounceLightSensor() { |
| if (mLightSensorEnabled) { |
| long time = SystemClock.uptimeMillis(); |
| if (time >= mLastObservedLuxTime + SYNTHETIC_LIGHT_SENSOR_RATE_MILLIS) { |
| if (DEBUG) { |
| Slog.d(TAG, "debounceLightSensor: Synthesizing light sensor measurement " |
| + "after " + (time - mLastObservedLuxTime) + " ms."); |
| } |
| applyLightSensorMeasurement(time, mLastObservedLux); |
| } |
| updateAmbientLux(time); |
| } |
| } |
| |
| private void updateAutoBrightness(boolean sendUpdate) { |
| if (!mAmbientLuxValid) { |
| return; |
| } |
| |
| float value = mScreenAutoBrightnessSpline.interpolate(mAmbientLux); |
| float gamma = 1.0f; |
| |
| if (USE_SCREEN_AUTO_BRIGHTNESS_ADJUSTMENT |
| && mPowerRequest.screenAutoBrightnessAdjustment != 0.0f) { |
| final float adjGamma = FloatMath.pow(SCREEN_AUTO_BRIGHTNESS_ADJUSTMENT_MAX_GAMMA, |
| Math.min(1.0f, Math.max(-1.0f, |
| -mPowerRequest.screenAutoBrightnessAdjustment))); |
| gamma *= adjGamma; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAutoBrightness: adjGamma=" + adjGamma); |
| } |
| } |
| |
| if (USE_TWILIGHT_ADJUSTMENT) { |
| TwilightState state = mTwilight.getCurrentState(); |
| if (state != null && state.isNight()) { |
| final long now = System.currentTimeMillis(); |
| final float earlyGamma = |
| getTwilightGamma(now, state.getYesterdaySunset(), state.getTodaySunrise()); |
| final float lateGamma = |
| getTwilightGamma(now, state.getTodaySunset(), state.getTomorrowSunrise()); |
| gamma *= earlyGamma * lateGamma; |
| if (DEBUG) { |
| Slog.d(TAG, "updateAutoBrightness: earlyGamma=" + earlyGamma |
| + ", lateGamma=" + lateGamma); |
| } |
| } |
| } |
| |
| if (gamma != 1.0f) { |
| final float in = value; |
| value = FloatMath.pow(value, gamma); |
| if (DEBUG) { |
| Slog.d(TAG, "updateAutoBrightness: gamma=" + gamma |
| + ", in=" + in + ", out=" + value); |
| } |
| } |
| |
| int newScreenAutoBrightness = clampScreenBrightness( |
| Math.round(value * PowerManager.BRIGHTNESS_ON)); |
| if (mScreenAutoBrightness != newScreenAutoBrightness) { |
| if (DEBUG) { |
| Slog.d(TAG, "updateAutoBrightness: mScreenAutoBrightness=" |
| + mScreenAutoBrightness + ", newScreenAutoBrightness=" |
| + newScreenAutoBrightness); |
| } |
| |
| mScreenAutoBrightness = newScreenAutoBrightness; |
| mLastScreenAutoBrightnessGamma = gamma; |
| if (sendUpdate) { |
| sendUpdatePowerState(); |
| } |
| } |
| } |
| |
| private static float getTwilightGamma(long now, long lastSunset, long nextSunrise) { |
| if (lastSunset < 0 || nextSunrise < 0 |
| || now < lastSunset || now > nextSunrise) { |
| return 1.0f; |
| } |
| |
| if (now < lastSunset + TWILIGHT_ADJUSTMENT_TIME) { |
| return lerp(1.0f, TWILIGHT_ADJUSTMENT_MAX_GAMMA, |
| (float)(now - lastSunset) / TWILIGHT_ADJUSTMENT_TIME); |
| } |
| |
| if (now > nextSunrise - TWILIGHT_ADJUSTMENT_TIME) { |
| return lerp(1.0f, TWILIGHT_ADJUSTMENT_MAX_GAMMA, |
| (float)(nextSunrise - now) / TWILIGHT_ADJUSTMENT_TIME); |
| } |
| |
| return TWILIGHT_ADJUSTMENT_MAX_GAMMA; |
| } |
| |
| private static float lerp(float x, float y, float alpha) { |
| return x + (y - x) * alpha; |
| } |
| |
| private void sendOnStateChanged() { |
| mCallbackHandler.post(mOnStateChangedRunnable); |
| } |
| |
| private final Runnable mOnStateChangedRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mCallbacks.onStateChanged(); |
| } |
| }; |
| |
| private void sendOnProximityPositive() { |
| mCallbackHandler.post(mOnProximityPositiveRunnable); |
| } |
| |
| private final Runnable mOnProximityPositiveRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mCallbacks.onProximityPositive(); |
| } |
| }; |
| |
| private void sendOnProximityNegative() { |
| mCallbackHandler.post(mOnProximityNegativeRunnable); |
| } |
| |
| private final Runnable mOnProximityNegativeRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mCallbacks.onProximityNegative(); |
| } |
| }; |
| |
| public void dump(final PrintWriter pw) { |
| synchronized (mLock) { |
| pw.println(); |
| pw.println("Display Controller Locked State:"); |
| pw.println(" mDisplayReadyLocked=" + mDisplayReadyLocked); |
| pw.println(" mPendingRequestLocked=" + mPendingRequestLocked); |
| pw.println(" mPendingRequestChangedLocked=" + mPendingRequestChangedLocked); |
| pw.println(" mPendingWaitForNegativeProximityLocked=" |
| + mPendingWaitForNegativeProximityLocked); |
| pw.println(" mPendingUpdatePowerStateLocked=" + mPendingUpdatePowerStateLocked); |
| } |
| |
| pw.println(); |
| pw.println("Display Controller Configuration:"); |
| pw.println(" mScreenBrightnessDimConfig=" + mScreenBrightnessDimConfig); |
| pw.println(" mScreenBrightnessRangeMinimum=" + mScreenBrightnessRangeMinimum); |
| pw.println(" mScreenBrightnessRangeMaximum=" + mScreenBrightnessRangeMaximum); |
| pw.println(" mUseSoftwareAutoBrightnessConfig=" |
| + mUseSoftwareAutoBrightnessConfig); |
| pw.println(" mScreenAutoBrightnessSpline=" + mScreenAutoBrightnessSpline); |
| pw.println(" mLightSensorWarmUpTimeConfig=" + mLightSensorWarmUpTimeConfig); |
| |
| mHandler.runWithScissors(new Runnable() { |
| @Override |
| public void run() { |
| dumpLocal(pw); |
| } |
| }, 1000); |
| } |
| |
| private void dumpLocal(PrintWriter pw) { |
| pw.println(); |
| pw.println("Display Controller Thread State:"); |
| pw.println(" mPowerRequest=" + mPowerRequest); |
| pw.println(" mWaitingForNegativeProximity=" + mWaitingForNegativeProximity); |
| |
| pw.println(" mProximitySensor=" + mProximitySensor); |
| pw.println(" mProximitySensorEnabled=" + mProximitySensorEnabled); |
| pw.println(" mProximityThreshold=" + mProximityThreshold); |
| pw.println(" mProximity=" + proximityToString(mProximity)); |
| pw.println(" mPendingProximity=" + proximityToString(mPendingProximity)); |
| pw.println(" mPendingProximityDebounceTime=" |
| + TimeUtils.formatUptime(mPendingProximityDebounceTime)); |
| pw.println(" mScreenOffBecauseOfProximity=" + mScreenOffBecauseOfProximity); |
| |
| pw.println(" mLightSensor=" + mLightSensor); |
| pw.println(" mLightSensorEnabled=" + mLightSensorEnabled); |
| pw.println(" mLightSensorEnableTime=" |
| + TimeUtils.formatUptime(mLightSensorEnableTime)); |
| pw.println(" mAmbientLux=" + mAmbientLux); |
| pw.println(" mAmbientLuxValid=" + mAmbientLuxValid); |
| pw.println(" mLastObservedLux=" + mLastObservedLux); |
| pw.println(" mLastObservedLuxTime=" |
| + TimeUtils.formatUptime(mLastObservedLuxTime)); |
| pw.println(" mRecentLightSamples=" + mRecentLightSamples); |
| pw.println(" mRecentShortTermAverageLux=" + mRecentShortTermAverageLux); |
| pw.println(" mRecentLongTermAverageLux=" + mRecentLongTermAverageLux); |
| pw.println(" mDebounceLuxDirection=" + mDebounceLuxDirection); |
| pw.println(" mDebounceLuxTime=" + TimeUtils.formatUptime(mDebounceLuxTime)); |
| pw.println(" mScreenAutoBrightness=" + mScreenAutoBrightness); |
| pw.println(" mUsingScreenAutoBrightness=" + mUsingScreenAutoBrightness); |
| pw.println(" mLastScreenAutoBrightnessGamma=" + mLastScreenAutoBrightnessGamma); |
| pw.println(" mTwilight.getCurrentState()=" + mTwilight.getCurrentState()); |
| |
| if (mElectronBeamOnAnimator != null) { |
| pw.println(" mElectronBeamOnAnimator.isStarted()=" + |
| mElectronBeamOnAnimator.isStarted()); |
| } |
| if (mElectronBeamOffAnimator != null) { |
| pw.println(" mElectronBeamOffAnimator.isStarted()=" + |
| mElectronBeamOffAnimator.isStarted()); |
| } |
| |
| if (mPowerState != null) { |
| mPowerState.dump(pw); |
| } |
| } |
| |
| private static String proximityToString(int state) { |
| switch (state) { |
| case PROXIMITY_UNKNOWN: |
| return "Unknown"; |
| case PROXIMITY_NEGATIVE: |
| return "Negative"; |
| case PROXIMITY_POSITIVE: |
| return "Positive"; |
| default: |
| return Integer.toString(state); |
| } |
| } |
| |
| private static boolean wantScreenOn(int state) { |
| switch (state) { |
| case DisplayPowerRequest.SCREEN_STATE_BRIGHT: |
| case DisplayPowerRequest.SCREEN_STATE_DIM: |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Asynchronous callbacks from the power controller to the power manager service. |
| */ |
| public interface Callbacks { |
| void onStateChanged(); |
| void onProximityPositive(); |
| void onProximityNegative(); |
| } |
| |
| private final class DisplayControllerHandler extends Handler { |
| public DisplayControllerHandler(Looper looper) { |
| super(looper, null, true /*async*/); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_UPDATE_POWER_STATE: |
| updatePowerState(); |
| break; |
| |
| case MSG_PROXIMITY_SENSOR_DEBOUNCED: |
| debounceProximitySensor(); |
| break; |
| |
| case MSG_LIGHT_SENSOR_DEBOUNCED: |
| debounceLightSensor(); |
| break; |
| } |
| } |
| } |
| |
| private final SensorEventListener mProximitySensorListener = new SensorEventListener() { |
| @Override |
| public void onSensorChanged(SensorEvent event) { |
| if (mProximitySensorEnabled) { |
| final long time = SystemClock.uptimeMillis(); |
| final float distance = event.values[0]; |
| boolean positive = distance >= 0.0f && distance < mProximityThreshold; |
| handleProximitySensorEvent(time, positive); |
| } |
| } |
| |
| @Override |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| // Not used. |
| } |
| }; |
| |
| private final SensorEventListener mLightSensorListener = new SensorEventListener() { |
| @Override |
| public void onSensorChanged(SensorEvent event) { |
| if (mLightSensorEnabled) { |
| final long time = SystemClock.uptimeMillis(); |
| final float lux = event.values[0]; |
| handleLightSensorEvent(time, lux); |
| } |
| } |
| |
| @Override |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| // Not used. |
| } |
| }; |
| |
| private final TwilightService.TwilightListener mTwilightListener = |
| new TwilightService.TwilightListener() { |
| @Override |
| public void onTwilightStateChanged() { |
| mTwilightChanged = true; |
| updatePowerState(); |
| } |
| }; |
| } |
