Merge "Fix HDR for app-override brightness." into sc-dev am: 9ed99bd9d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15302104

Change-Id: I3a645c2c225b5177f0f7d0fae4d91d61adec93fa

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

@@ -778,7 +778,7 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
         setUpAutoBrightness(mContext.getResources(), mHandler);
         reloadReduceBrightColours();
         mHbmController.resetHbmData(info.width, info.height, token,
-                mDisplayDeviceConfig.getHighBrightnessModeData(), mBrightnessSetting);
+                mDisplayDeviceConfig.getHighBrightnessModeData());
     }
 
     private void sendUpdatePowerState() {
@@ -968,7 +968,6 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
         final boolean mustNotify;
         final int previousPolicy;
         boolean mustInitialize = false;
-        boolean shouldSaveBrightnessInfo = true;
         int brightnessAdjustmentFlags = 0;
         mBrightnessReasonTemp.set(null);
         synchronized (mLock) {
@@ -1099,7 +1098,6 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
         if (state == Display.STATE_OFF) {
             brightnessState = PowerManager.BRIGHTNESS_OFF_FLOAT;
             mBrightnessReasonTemp.setReason(BrightnessReason.REASON_SCREEN_OFF);
-            shouldSaveBrightnessInfo = false;
         }
 
         // Always use the VR brightness when in the VR state.
@@ -1217,6 +1215,10 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
                 brightnessAdjustmentFlags = 0;
             }
         } else {
+            // Any non-auto-brightness values such as override or temporary should still be subject
+            // to clamping so that they don't go beyond the current max as specified by HBM
+            // Controller.
+            brightnessState = clampScreenBrightness(brightnessState);
             mAppliedAutoBrightness = false;
             brightnessAdjustmentFlags = 0;
         }
@@ -1224,9 +1226,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
         // Use default brightness when dozing unless overridden.
         if ((Float.isNaN(brightnessState))
                 && Display.isDozeState(state)) {
-            brightnessState = mScreenBrightnessDozeConfig;
+            brightnessState = clampScreenBrightness(mScreenBrightnessDozeConfig);
             mBrightnessReasonTemp.setReason(BrightnessReason.REASON_DOZE_DEFAULT);
-            shouldSaveBrightnessInfo = false;
         }
 
         // Apply manual brightness.
@@ -1241,12 +1242,13 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
             mBrightnessReasonTemp.setReason(BrightnessReason.REASON_MANUAL);
         }
 
-        // Save out the brightness info now that the brightness state for this iteration has been
-        // finalized and before we send out notifications about the brightness changing.
-        if (shouldSaveBrightnessInfo) {
-            saveBrightnessInfo(brightnessState);
-
-        }
+        // The current brightness to use has been calculated at this point (minus the adjustments
+        // like low-power and dim), and HbmController should be notified so that it can accurately
+        // calculate HDR or HBM levels. We specifically do it here instead of having HbmController
+        // listen to the brightness setting because certain brightness sources (just as an app
+        // override) are not saved to the setting, but should be reflected in HBM
+        // calculations.
+        mHbmController.onBrightnessChanged(brightnessState);
 
         if (updateScreenBrightnessSetting) {
             // Tell the rest of the system about the new brightness in case we had to change it
@@ -1257,6 +1259,10 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
             putScreenBrightnessSetting(brightnessState, /* updateCurrent */ true);
         }
 
+        // We save the brightness info *after* the brightness setting has been changed so that
+        // the brightness info reflects the latest value.
+        saveBrightnessInfo(getScreenBrightnessSetting());
+
         // Apply dimming by at least some minimum amount when user activity
         // timeout is about to expire.
         if (mPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) {
@@ -1533,7 +1539,7 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
                     mHandler.post(mOnBrightnessChangeRunnable);
                     // TODO(b/192258832): Switch the HBMChangeCallback to a listener pattern.
                     mAutomaticBrightnessController.update();
-                }, mContext, mBrightnessSetting);
+                }, mContext);
     }
 
     private void blockScreenOn() {

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

@@ -37,7 +37,6 @@ import android.util.TimeUtils;
 import android.view.SurfaceControlHdrLayerInfoListener;
 
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.server.display.BrightnessSetting.BrightnessSettingListener;
 import com.android.server.display.DisplayDeviceConfig.HighBrightnessModeData;
 import com.android.server.display.DisplayManagerService.Clock;
 
@@ -70,7 +69,6 @@ class HighBrightnessModeController {
     private final Context mContext;
     private final SettingsObserver mSettingsObserver;
     private final Injector mInjector;
-    private final BrightnessSettingListener mBrightnessSettingListener = this::onBrightnessChanged;
 
     private HdrListener mHdrListener;
     private HighBrightnessModeData mHbmData;
@@ -86,7 +84,6 @@ class HighBrightnessModeController {
     private boolean mIsBlockedByLowPowerMode = false;
     private int mWidth;
     private int mHeight;
-    private BrightnessSetting mBrightnessSetting;
     private float mAmbientLux;
 
     /**
@@ -103,30 +100,30 @@ class HighBrightnessModeController {
 
     HighBrightnessModeController(Handler handler, int width, int height, IBinder displayToken,
             float brightnessMin, float brightnessMax, HighBrightnessModeData hbmData,
-            Runnable hbmChangeCallback, Context context, BrightnessSetting brightnessSetting) {
+            Runnable hbmChangeCallback, Context context) {
         this(new Injector(), handler, width, height, displayToken, brightnessMin, brightnessMax,
-                hbmData, hbmChangeCallback, context, brightnessSetting);
+                hbmData, hbmChangeCallback, context);
     }
 
     @VisibleForTesting
     HighBrightnessModeController(Injector injector, Handler handler, int width, int height,
             IBinder displayToken, float brightnessMin, float brightnessMax,
             HighBrightnessModeData hbmData, Runnable hbmChangeCallback,
-            Context context, BrightnessSetting brightnessSetting) {
+            Context context) {
         mInjector = injector;
         mContext = context;
         mClock = injector.getClock();
         mHandler = handler;
+        mBrightness = brightnessMin;
         mBrightnessMin = brightnessMin;
         mBrightnessMax = brightnessMax;
-        mBrightness = brightnessSetting.getBrightness();
         mHbmChangeCallback = hbmChangeCallback;
         mSkinThermalStatusObserver = new SkinThermalStatusObserver(mInjector, mHandler);
         mSettingsObserver = new SettingsObserver(mHandler);
         mRecalcRunnable = this::recalculateTimeAllowance;
         mHdrListener = new HdrListener();
 
-        resetHbmData(width, height, displayToken, hbmData, brightnessSetting);
+        resetHbmData(width, height, displayToken, hbmData);
     }
 
     void setAutoBrightnessEnabled(boolean isEnabled) {
@@ -185,7 +182,6 @@ class HighBrightnessModeController {
         }
     }
 
-    @VisibleForTesting
     void onBrightnessChanged(float brightness) {
         if (!deviceSupportsHbm()) {
             return;
@@ -224,12 +220,11 @@ class HighBrightnessModeController {
         mSettingsObserver.stopObserving();
     }
 
-    void resetHbmData(int width, int height, IBinder displayToken, HighBrightnessModeData hbmData,
-            BrightnessSetting brightnessSetting) {
+    void resetHbmData(int width, int height, IBinder displayToken, HighBrightnessModeData hbmData) {
         mWidth = width;
         mHeight = height;
         mHbmData = hbmData;
-        resetBrightnessSetting(brightnessSetting);
+
         unregisterHdrListener();
         mSkinThermalStatusObserver.stopObserving();
         mSettingsObserver.stopObserving();
@@ -261,9 +256,12 @@ class HighBrightnessModeController {
         pw.println("  mBrightness=" + mBrightness);
         pw.println("  mCurrentMin=" + getCurrentBrightnessMin());
         pw.println("  mCurrentMax=" + getCurrentBrightnessMax());
-        pw.println("  mHbmMode=" + BrightnessInfo.hbmToString(mHbmMode));
+        pw.println("  mHbmMode=" + BrightnessInfo.hbmToString(mHbmMode)
+                + (mHbmMode == BrightnessInfo.HIGH_BRIGHTNESS_MODE_HDR
+                ? "(" + getHdrBrightnessValue() + ")" : ""));
         pw.println("  mHbmData=" + mHbmData);
-        pw.println("  mAmbientLux=" + mAmbientLux);
+        pw.println("  mAmbientLux=" + mAmbientLux
+                + (mIsAutoBrightnessEnabled ? "" : " (old/invalid)"));
         pw.println("  mIsInAllowedAmbientRange=" + mIsInAllowedAmbientRange);
         pw.println("  mIsAutoBrightnessEnabled=" + mIsAutoBrightnessEnabled);
         pw.println("  mIsHdrLayerPresent=" + mIsHdrLayerPresent);
@@ -301,16 +299,6 @@ class HighBrightnessModeController {
         return event.startTimeMillis;
     }
 
-    private void resetBrightnessSetting(BrightnessSetting brightnessSetting) {
-        if (mBrightnessSetting != null) {
-            mBrightnessSetting.unregisterListener(mBrightnessSettingListener);
-        }
-        mBrightnessSetting = brightnessSetting;
-        if (mBrightnessSetting != null) {
-            mBrightnessSetting.registerListener(mBrightnessSettingListener);
-        }
-    }
-
     private boolean isCurrentlyAllowed() {
         // Returns true if HBM is allowed (above the ambient lux threshold) and there's still
         // time within the current window for additional HBM usage. We return false if there is an

services/tests/servicestests/src/com/android/server/display/HighBrightnessModeControllerTest.java

@@ -92,7 +92,6 @@ public class HighBrightnessModeControllerTest {
 
     @Mock IThermalService mThermalServiceMock;
     @Mock Injector mInjectorMock;
-    @Mock BrightnessSetting mBrightnessSetting;
 
     @Captor ArgumentCaptor<IThermalEventListener> mThermalEventListenerCaptor;
 
@@ -123,7 +122,7 @@ public class HighBrightnessModeControllerTest {
         initHandler(null);
         final HighBrightnessModeController hbmc = new HighBrightnessModeController(
                 mInjectorMock, mHandler, DISPLAY_WIDTH, DISPLAY_HEIGHT, mDisplayToken, DEFAULT_MIN,
-                DEFAULT_MAX, null, () -> {}, mContextSpy, mBrightnessSetting);
+                DEFAULT_MAX, null, () -> {}, mContextSpy);
         assertState(hbmc, DEFAULT_MIN, DEFAULT_MAX, HIGH_BRIGHTNESS_MODE_OFF);
     }
 
@@ -132,7 +131,7 @@ public class HighBrightnessModeControllerTest {
         initHandler(null);
         final HighBrightnessModeController hbmc = new HighBrightnessModeController(
                 mInjectorMock, mHandler, DISPLAY_WIDTH, DISPLAY_HEIGHT, mDisplayToken, DEFAULT_MIN,
-                DEFAULT_MAX, null, () -> {}, mContextSpy, mBrightnessSetting);
+                DEFAULT_MAX, null, () -> {}, mContextSpy);
         hbmc.setAutoBrightnessEnabled(true);
         hbmc.onAmbientLuxChange(MINIMUM_LUX - 1); // below allowed range
         assertState(hbmc, DEFAULT_MIN, DEFAULT_MAX, HIGH_BRIGHTNESS_MODE_OFF);
@@ -464,7 +463,7 @@ public class HighBrightnessModeControllerTest {
         initHandler(clock);
         return new HighBrightnessModeController(mInjectorMock, mHandler, DISPLAY_WIDTH,
                 DISPLAY_HEIGHT, mDisplayToken, DEFAULT_MIN, DEFAULT_MAX, DEFAULT_HBM_DATA, () -> {},
-                mContextSpy, mBrightnessSetting);
+                mContextSpy);
     }
 
     private void initHandler(OffsettableClock clock) {