Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 99854359 authored by Erica Chang's avatar Erica Chang Committed by Gerrit Code Review
Browse files

frameworks: display: Added automatic brightness configs 

Change-Id: I71ad7e08b0be56de959bbf06851944a97a97f620
(cherry picked from commit 8ae0ee8d)
parent f3dc1ca7

core/res/res/values/cm_symbols.xml

+4 −0
Original line number Diff line number Diff line
@@ -300,6 +300,10 @@ 
    <java-symbol type="string" name="usb_ext_media_unmountable_notification_message" />

    <java-symbol type="string" name="usb_ext_media_unmountable_notification_title" />



    <!-- Automatic display brightness settings -->

    <java-symbol type="integer" name="config_brighteningLightDebounce" />

    <java-symbol type="integer" name="config_darkeningLightDebounce" />



    <!-- LiveDisplay -->

    <java-symbol type="string" name="live_display_title" />

    <java-symbol type="string" name="live_display_hint" />

core/res/res/values/config.xml

+4 −0
Original line number Diff line number Diff line
@@ -971,6 +971,10 @@ 
    <integer-array name="config_autoBrightnessLevels">

    </integer-array>



    <!-- The debounce time value for automatic display brightness adjustment -->

    <integer name="config_brighteningLightDebounce">4000</integer>

    <integer name="config_darkeningLightDebounce">8000</integer>



    <!-- Array of output values for LCD backlight corresponding to the LUX values

         in the config_autoBrightnessLevels array.  This array should have size one greater

         than the size of the config_autoBrightnessLevels array.

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

+10 −4
Original line number Diff line number Diff line
@@ -65,8 +65,8 @@ class AutomaticBrightnessController { 
    // 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;

    private final long mBrighteningLightDebounceConfig;

    private final long mDarkeningLightDebounceConfig;



    // Hysteresis constraints for brightening or darkening.

    // The recent lux must have changed by at least this fraction relative to the
@@ -185,6 +185,7 @@ class AutomaticBrightnessController { 
            SensorManager sensorManager, Spline autoBrightnessSpline, int lightSensorWarmUpTime,

            int brightnessMin, int brightnessMax, float dozeScaleFactor,

            LiveDisplayController ldc) {

        final Resources resources = context.getResources();

        mContext = context;

        mCallbacks = callbacks;

        mTwilight = LocalServices.getService(TwilightManager.class);
@@ -196,6 +197,11 @@ class AutomaticBrightnessController { 
        mDozeScaleFactor = dozeScaleFactor;

        mLiveDisplay = ldc;



        mBrighteningLightDebounceConfig = resources.getInteger(

                com.android.internal.R.integer.config_brighteningLightDebounce);

        mDarkeningLightDebounceConfig = resources.getInteger(

                com.android.internal.R.integer.config_darkeningLightDebounce);



        mHandler = new AutomaticBrightnessHandler(looper);

        mAmbientLightRingBuffer = new AmbientLightRingBuffer();
@@ -357,7 +363,7 @@ class AutomaticBrightnessController { 
            }

            earliestValidTime = mAmbientLightRingBuffer.getTime(i);

        }

        return earliestValidTime + BRIGHTENING_LIGHT_DEBOUNCE;

        return earliestValidTime + mBrighteningLightDebounceConfig;

    }



    private long nextAmbientLightDarkeningTransition(long time) {
@@ -369,7 +375,7 @@ class AutomaticBrightnessController { 
            }

            earliestValidTime = mAmbientLightRingBuffer.getTime(i);

        }

        return earliestValidTime + DARKENING_LIGHT_DEBOUNCE;

        return earliestValidTime + mDarkeningLightDebounceConfig;

    }



    private void updateAmbientLux() {