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Commit ff24fc1d authored by Fiona Campbell's avatar Fiona Campbell
Browse files

Add automatic brightness events to dumpsys 

Bug: 220137659
Test: adb shell dumpsys display
Change-Id: I140441d3f698e509642555342f25c7776b20eff6
parent c50b959b

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

+51 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ import com.android.internal.display.BrightnessSynchronizer; 
import com.android.internal.logging.MetricsLogger;

import com.android.internal.logging.nano.MetricsProto.MetricsEvent;

import com.android.internal.util.FrameworkStatsLog;

import com.android.internal.util.RingBuffer;

import com.android.server.LocalServices;

import com.android.server.am.BatteryStatsService;

import com.android.server.display.RampAnimator.DualRampAnimator;
@@ -154,6 +155,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
    private static final int REPORTED_TO_POLICY_SCREEN_ON = 2;

    private static final int REPORTED_TO_POLICY_SCREEN_TURNING_OFF = 3;



    private static final int RINGBUFFER_MAX = 100;



    private final String TAG;



    private final Object mLock = new Object();
@@ -211,6 +214,9 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 


    private final float mScreenBrightnessDefault;



    // Previously logged screen brightness. Used for autobrightness event dumpsys.

    private float mPreviousScreenBrightness = Float.NaN;



    // The minimum allowed brightness while in VR.

    private final float mScreenBrightnessForVrRangeMinimum;
@@ -386,6 +392,9 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 


    private final Runnable mOnBrightnessChangeRunnable;



    // Used for keeping record in dumpsys for when and to which brightness auto adaptions were made.

    private RingBuffer<AutobrightnessEvent> mAutobrightnessEventRingBuffer;



    // A record of state for skipping brightness ramps.

    private int mSkipRampState = RAMP_STATE_SKIP_NONE;
@@ -984,6 +993,9 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
                    mHbmController, mBrightnessThrottler, mIdleModeBrightnessMapper,

                    mDisplayDeviceConfig.getAmbientHorizonShort(),

                    mDisplayDeviceConfig.getAmbientHorizonLong());



            mAutobrightnessEventRingBuffer =

                    new RingBuffer<>(AutobrightnessEvent.class, RINGBUFFER_MAX);

        } else {

            mUseSoftwareAutoBrightnessConfig = false;

        }
@@ -1554,6 +1566,15 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
            Slog.v(TAG, "Brightness [" + brightnessState + "] manual adjustment.");

        }



        // Add any automatic changes to autobrightness ringbuffer for dumpsys.

        if (mBrightnessReason.reason == BrightnessReason.REASON_AUTOMATIC

                && !BrightnessSynchronizer.floatEquals(

                        mPreviousScreenBrightness, brightnessState)) {

            mPreviousScreenBrightness = brightnessState;

            mAutobrightnessEventRingBuffer.append(new AutobrightnessEvent(

                    System.currentTimeMillis(), brightnessState));

        }



        // Update display white-balance.

        if (mDisplayWhiteBalanceController != null) {

            if (state == Display.STATE_ON && mDisplayWhiteBalanceSettings.isEnabled()) {
@@ -2488,6 +2509,7 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 


        if (mAutomaticBrightnessController != null) {

            mAutomaticBrightnessController.dump(pw);

            dumpAutobrightnessEvents(pw);

        }



        if (mHbmController != null) {
@@ -2544,6 +2566,20 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
        }

    }



    private void dumpAutobrightnessEvents(PrintWriter pw) {

        int size = mAutobrightnessEventRingBuffer.size();

        if (size < 1) {

            pw.println("No Automatic Brightness Adjustments");

            return;

        }



        pw.println("Automatic Brightness Adjustments Last " + size + " Events: ");

        AutobrightnessEvent[] eventArray = mAutobrightnessEventRingBuffer.toArray();

        for (int i = 0; i < mAutobrightnessEventRingBuffer.size(); i++) {

            pw.println("  " + eventArray[i].toString());

        }

    }



    private static float clampAbsoluteBrightness(float value) {

        return MathUtils.constrain(value, PowerManager.BRIGHTNESS_MIN,

                PowerManager.BRIGHTNESS_MAX);
@@ -2612,6 +2648,21 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
        }

    }



    private static class AutobrightnessEvent {

        final long mTime;

        final float mBrightness;



        AutobrightnessEvent(long time, float brightness) {

            mTime = time;

            mBrightness = brightness;

        }



        @Override

        public String toString() {

            return TimeUtils.formatForLogging(mTime) + " - Brightness: " + mBrightness;

        }

    }



    private final class DisplayControllerHandler extends Handler {

        public DisplayControllerHandler(Looper looper) {

            super(looper, null, true /*async*/);