Merge "Refactor UDFPS display logic and remove illumination" into tm-qpr-dev

core/java/android/hardware/biometrics/BiometricFingerprintConstants.java

@@ -315,17 +315,17 @@ public interface BiometricFingerprintConstants {
     int FINGERPRINT_ACQUIRED_VENDOR_BASE = 1000;
 
     /**
-     * Whether the FingerprintAcquired message is a signal to turn off HBM
+     * Whether the FingerprintAcquired message is a signal to disable the UDFPS display mode.
+     * We want to disable the UDFPS mode as soon as possible to conserve power and provide better
+     * UX. For example, prolonged high-brightness illumination of optical sensors can be unpleasant
+     * to the user, can cause long term display burn-in, and can drain the battery faster.
      */
-    static boolean shouldTurnOffHbm(@FingerprintAcquired int acquiredInfo) {
+    static boolean shouldDisableUdfpsDisplayMode(@FingerprintAcquired int acquiredInfo) {
         switch (acquiredInfo) {
             case FINGERPRINT_ACQUIRED_START:
-                // Authentication just began
+                // Keep the UDFPS mode because the authentication just began.
                 return false;
             case FINGERPRINT_ACQUIRED_GOOD:
-                // Good image captured. Turn off HBM. Success/Reject comes after, which is when
-                // hideUdfpsOverlay will be called.
-                return true;
             case FINGERPRINT_ACQUIRED_PARTIAL:
             case FINGERPRINT_ACQUIRED_INSUFFICIENT:
             case FINGERPRINT_ACQUIRED_IMAGER_DIRTY:
@@ -334,11 +334,12 @@ public interface BiometricFingerprintConstants {
             case FINGERPRINT_ACQUIRED_IMMOBILE:
             case FINGERPRINT_ACQUIRED_TOO_BRIGHT:
             case FINGERPRINT_ACQUIRED_VENDOR:
-                // Bad image captured. Turn off HBM. Matcher will not run, so there's no need to
+                // Disable the UDFPS mode because the image capture has finished. The overlay
-                // keep HBM on.
+                // can be hidden later, once the authentication result arrives.
                 return true;
             case FINGERPRINT_ACQUIRED_UNKNOWN:
             default:
+                // Keep the UDFPS mode in case of an unknown message.
                 return false;
         }
     }

core/res/res/values/config.xml

@@ -4877,9 +4877,6 @@
         -->
     </array>
 
-    <!-- How long it takes for the HW to start illuminating after the illumination is requested. -->
-    <integer name="config_udfps_illumination_transition_ms">50</integer>
-
     <!-- Indicates whether device has a power button fingerprint sensor. -->
     <bool name="config_is_powerbutton_fps" translatable="false" >false</bool>
 

core/res/res/values/symbols.xml

@@ -2706,7 +2706,6 @@
   <java-symbol type="bool" name="allow_test_udfps" />
   <java-symbol type="array" name="config_udfps_sensor_props" />
   <java-symbol type="array" name="config_sfps_sensor_props" />
-  <java-symbol type="integer" name="config_udfps_illumination_transition_ms" />
   <java-symbol type="bool" name="config_is_powerbutton_fps" />
   <java-symbol type="array" name="config_udfps_enroll_stage_thresholds" />
   <java-symbol type="array" name="config_sfps_enroll_stage_thresholds" />

packages/SystemUI/src/com/android/systemui/biometrics/AuthController.java

@@ -291,7 +291,6 @@ public class AuthController extends CoreStartable implements CommandQueue.Callba
                 }
             });
             mUdfpsController.setAuthControllerUpdateUdfpsLocation(this::updateUdfpsLocation);
-            mUdfpsController.setHalControlsIllumination(mUdfpsProps.get(0).halControlsIllumination);
             mUdfpsBounds = mUdfpsProps.get(0).getLocation().getRect();
         }
 

packages/SystemUI/src/com/android/systemui/biometrics/AuthRippleController.kt

@@ -264,7 +264,7 @@ class AuthRippleController @Inject constructor(
             acquireInfo: Int
         ) {
             if (biometricSourceType == BiometricSourceType.FINGERPRINT &&
-                    BiometricFingerprintConstants.shouldTurnOffHbm(acquireInfo) &&
+                    BiometricFingerprintConstants.shouldDisableUdfpsDisplayMode(acquireInfo) &&
                     acquireInfo != BiometricFingerprintConstants.FINGERPRINT_ACQUIRED_GOOD) {
                 // received an 'acquiredBad' message, so immediately retract
                 mView.retractDwellRipple()

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsAnimationView.java

@@ -54,13 +54,13 @@ public abstract class UdfpsAnimationView extends FrameLayout {
         getDrawable().onSensorRectUpdated(bounds);
     }
 
-    void onIlluminationStarting() {
+    void onDisplayConfiguring() {
-        getDrawable().setIlluminationShowing(true);
+        getDrawable().setDisplayConfigured(true);
         getDrawable().invalidateSelf();
     }
 
-    void onIlluminationStopped() {
+    void onDisplayUnconfigured() {
-        getDrawable().setIlluminationShowing(false);
+        getDrawable().setDisplayConfigured(false);
         getDrawable().invalidateSelf();
     }
 

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsAnimationViewController.kt

@@ -31,10 +31,10 @@ import java.io.PrintWriter
 /**
  * Handles:
  * 1. registering for listeners when its view is attached and unregistering on view detached
- * 2. pausing udfps when fingerprintManager may still be running but we temporarily want to hide
+ * 2. pausing UDFPS when FingerprintManager may still be running but we temporarily want to hide
  * the affordance. this allows us to fade the view in and out nicely (see shouldPauseAuth)
  * 3. sending events to its view including:
- * - illumination events
+ * - enabling and disabling of the UDFPS display mode
  * - sensor position changes
  * - doze time event
  */
@@ -167,19 +167,20 @@ abstract class UdfpsAnimationViewController<T : UdfpsAnimationView>(
     }
 
     /**
-     * Udfps has started illuminating and the fingerprint manager is working on authenticating.
+     * The display began transitioning into the UDFPS mode and the fingerprint manager started
+     * authenticating.
      */
-    fun onIlluminationStarting() {
+    fun onDisplayConfiguring() {
-        view.onIlluminationStarting()
+        view.onDisplayConfiguring()
         view.postInvalidate()
     }
 
     /**
-     * Udfps has stopped illuminating and the fingerprint manager is no longer attempting to
+     * The display transitioned away from the UDFPS mode and the fingerprint manager stopped
-     * authenticate.
+     * authenticating.
      */
-    fun onIlluminationStopped() {
+    fun onDisplayUnconfigured() {
-        view.onIlluminationStopped()
+        view.onDisplayUnconfigured()
         view.postInvalidate()
     }
 

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java

@@ -86,7 +86,7 @@ import kotlin.Unit;
 
 /**
  * Shows and hides the under-display fingerprint sensor (UDFPS) overlay, handles UDFPS touch events,
- * and coordinates triggering of the high-brightness mode (HBM).
+ * and toggles the UDFPS display mode.
  *
  * Note that the current architecture is designed so that a single {@link UdfpsController}
  * controls/manages all UDFPS sensors. In other words, a single controller is registered with
@@ -123,7 +123,7 @@ public class UdfpsController implements DozeReceiver {
     @NonNull private final PowerManager mPowerManager;
     @NonNull private final AccessibilityManager mAccessibilityManager;
     @NonNull private final LockscreenShadeTransitionController mLockscreenShadeTransitionController;
-    @Nullable private final UdfpsHbmProvider mHbmProvider;
+    @Nullable private final UdfpsDisplayModeProvider mUdfpsDisplayMode;
     @NonNull private final ConfigurationController mConfigurationController;
     @NonNull private final SystemClock mSystemClock;
     @NonNull private final UnlockedScreenOffAnimationController
@@ -135,7 +135,6 @@ public class UdfpsController implements DozeReceiver {
     // Currently the UdfpsController supports a single UDFPS sensor. If devices have multiple
     // sensors, this, in addition to a lot of the code here, will be updated.
     @VisibleForTesting int mSensorId;
-    private boolean mHalControlsIllumination;
     @VisibleForTesting @NonNull UdfpsOverlayParams mOverlayParams = new UdfpsOverlayParams();
     // TODO(b/229290039): UDFPS controller should manage its dimensions on its own. Remove this.
     @Nullable private Runnable mAuthControllerUpdateUdfpsLocation;
@@ -147,10 +146,9 @@ public class UdfpsController implements DozeReceiver {
     private int mActivePointerId = -1;
     // The timestamp of the most recent touch log.
     private long mTouchLogTime;
-    // Sensor has a capture (good or bad) for this touch. Do not need to illuminate for this
+    // Sensor has a capture (good or bad) for this touch. No need to enable the UDFPS display mode
-    // particular touch event anymore. In other words, do not illuminate until user lifts and
+    // anymore for this particular touch event. In other words, do not enable the UDFPS mode until
-    // touches the sensor area again.
+    // the user touches the sensor area again.
-    // TODO: We should probably try to make touch/illumination things more of a FSM
     private boolean mAcquiredReceived;
 
     // The current request from FingerprintService. Null if no current request.
@@ -211,8 +209,8 @@ public class UdfpsController implements DozeReceiver {
                             mKeyguardUpdateMonitor, mDialogManager, mDumpManager,
                             mLockscreenShadeTransitionController, mConfigurationController,
                             mSystemClock, mKeyguardStateController,
-                            mUnlockedScreenOffAnimationController, mHalControlsIllumination,
+                            mUnlockedScreenOffAnimationController,
-                            mHbmProvider, requestId, reason, callback,
+                            mUdfpsDisplayMode, requestId, reason, callback,
                             (view, event, fromUdfpsView) -> onTouch(requestId, event,
                                     fromUdfpsView), mActivityLaunchAnimator)));
         }
@@ -236,7 +234,7 @@ public class UdfpsController implements DozeReceiver {
                 int sensorId,
                 @BiometricFingerprintConstants.FingerprintAcquired int acquiredInfo
         ) {
-            if (BiometricFingerprintConstants.shouldTurnOffHbm(acquiredInfo)) {
+            if (BiometricFingerprintConstants.shouldDisableUdfpsDisplayMode(acquiredInfo)) {
                 boolean acquiredGood = acquiredInfo == FINGERPRINT_ACQUIRED_GOOD;
                 mFgExecutor.execute(() -> {
                     if (mOverlay == null) {
@@ -247,7 +245,7 @@ public class UdfpsController implements DozeReceiver {
                     mAcquiredReceived = true;
                     final UdfpsView view = mOverlay.getOverlayView();
                     if (view != null) {
-                        view.stopIllumination(); // turn off HBM
+                        view.unconfigureDisplay();
                     }
                     if (acquiredGood) {
                         mOverlay.onAcquiredGood();
@@ -292,7 +290,7 @@ public class UdfpsController implements DozeReceiver {
     /**
      * Updates the overlay parameters and reconstructs or redraws the overlay, if necessary.
      *
-     * @param sensorId sensor for which the overlay is getting updated.
+     * @param sensorId      sensor for which the overlay is getting updated.
      * @param overlayParams See {@link UdfpsOverlayParams}.
      */
     public void updateOverlayParams(int sensorId, @NonNull UdfpsOverlayParams overlayParams) {
@@ -321,11 +319,6 @@ public class UdfpsController implements DozeReceiver {
         mAuthControllerUpdateUdfpsLocation = r;
     }
 
-    // TODO(b/229290039): UDFPS controller should manage its properties on its own. Remove this.
-    public void setHalControlsIllumination(boolean value) {
-        mHalControlsIllumination = value;
-    }
-
     /**
      * Calculate the pointer speed given a velocity tracker and the pointer id.
      * This assumes that the velocity tracker has already been passed all relevant motion events.
@@ -369,8 +362,8 @@ public class UdfpsController implements DozeReceiver {
     }
 
     /**
-     * @param x coordinate
+     * @param x                   coordinate
-     * @param y coordinate
+     * @param y                   coordinate
      * @param relativeToUdfpsView true if the coordinates are relative to the udfps view; else,
      *                            calculate from the display dimensions in portrait orientation
      */
@@ -423,7 +416,7 @@ public class UdfpsController implements DozeReceiver {
         }
 
         final UdfpsView udfpsView = mOverlay.getOverlayView();
-        final boolean isIlluminationRequested = udfpsView.isIlluminationRequested();
+        final boolean isDisplayConfigured = udfpsView.isDisplayConfigured();
         boolean handled = false;
         switch (event.getActionMasked()) {
             case MotionEvent.ACTION_OUTSIDE:
@@ -507,7 +500,7 @@ public class UdfpsController implements DozeReceiver {
                                 "minor: %.1f, major: %.1f, v: %.1f, exceedsVelocityThreshold: %b",
                                 minor, major, v, exceedsVelocityThreshold);
                         final long sinceLastLog = mSystemClock.elapsedRealtime() - mTouchLogTime;
-                        if (!isIlluminationRequested && !mAcquiredReceived
+                        if (!isDisplayConfigured && !mAcquiredReceived
                                 && !exceedsVelocityThreshold) {
 
                             final float scale = mOverlayParams.getScaleFactor();
@@ -598,7 +591,7 @@ public class UdfpsController implements DozeReceiver {
             @NonNull VibratorHelper vibrator,
             @NonNull UdfpsHapticsSimulator udfpsHapticsSimulator,
             @NonNull UdfpsShell udfpsShell,
-            @NonNull Optional<UdfpsHbmProvider> hbmProvider,
+            @NonNull Optional<UdfpsDisplayModeProvider> udfpsDisplayMode,
             @NonNull KeyguardStateController keyguardStateController,
             @NonNull DisplayManager displayManager,
             @Main Handler mainHandler,
@@ -630,7 +623,7 @@ public class UdfpsController implements DozeReceiver {
         mPowerManager = powerManager;
         mAccessibilityManager = accessibilityManager;
         mLockscreenShadeTransitionController = lockscreenShadeTransitionController;
-        mHbmProvider = hbmProvider.orElse(null);
+        mUdfpsDisplayMode = udfpsDisplayMode.orElse(null);
         screenLifecycle.addObserver(mScreenObserver);
         mScreenOn = screenLifecycle.getScreenState() == ScreenLifecycle.SCREEN_ON;
         mConfigurationController = configurationController;
@@ -804,15 +797,14 @@ public class UdfpsController implements DozeReceiver {
     }
 
     /**
-     * Cancel updfs scan affordances - ability to hide the HbmSurfaceView (white circle) before
+     * Cancel UDFPS affordances - ability to hide the UDFPS overlay before the user explicitly
-     * user explicitly lifts their finger. Generally, this should be called whenever udfps fails
+     * lifts their finger. Generally, this should be called on errors in the authentication flow.
-     * or errors.
      *
      * The sensor that triggers an AOD fingerprint interrupt (see onAodInterrupt) doesn't give
      * ACTION_UP/ACTION_CANCEL events, so and AOD interrupt scan needs to be cancelled manually.
      * This should be called when authentication either succeeds or fails. Failing to cancel the
-     * scan will leave the screen in high brightness mode and will show the HbmSurfaceView until
+     * scan will leave the display in the UDFPS mode until the user lifts their finger. On optical
-     * the user lifts their finger.
+     * sensors, this can result in illumination persisting for longer than necessary.
      */
     void onCancelUdfps() {
         if (mOverlay != null && mOverlay.getOverlayView() != null) {
@@ -874,7 +866,7 @@ public class UdfpsController implements DozeReceiver {
         Trace.endAsyncSection("UdfpsController.e2e.onPointerDown", 0);
         final UdfpsView view = mOverlay.getOverlayView();
         if (view != null) {
-            view.startIllumination(() -> {
+            view.configureDisplay(() -> {
                 if (mAlternateTouchProvider != null) {
                     mBiometricExecutor.execute(() -> {
                         mAlternateTouchProvider.onUiReady();
@@ -914,8 +906,8 @@ public class UdfpsController implements DozeReceiver {
             }
         }
         mOnFingerDown = false;
-        if (view.isIlluminationRequested()) {
+        if (view.isDisplayConfigured()) {
-            view.stopIllumination();
+            view.unconfigureDisplay();
         }
     }
 

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsControllerOverlay.kt

@@ -77,8 +77,7 @@ class UdfpsControllerOverlay(
     private val systemClock: SystemClock,
     private val keyguardStateController: KeyguardStateController,
     private val unlockedScreenOffAnimationController: UnlockedScreenOffAnimationController,
-    private val halControlsIllumination: Boolean,
+    private var udfpsDisplayModeProvider: UdfpsDisplayModeProvider,
-    private var hbmProvider: UdfpsHbmProvider,
     val requestId: Long,
     @ShowReason val requestReason: Int,
     private val controllerCallback: IUdfpsOverlayControllerCallback,
@@ -102,8 +101,8 @@ class UdfpsControllerOverlay(
         fitInsetsTypes = 0
         gravity = android.view.Gravity.TOP or android.view.Gravity.LEFT
         layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS
-        flags =
+        flags = (Utils.FINGERPRINT_OVERLAY_LAYOUT_PARAM_FLAGS or
-            (Utils.FINGERPRINT_OVERLAY_LAYOUT_PARAM_FLAGS or WindowManager.LayoutParams.FLAG_SPLIT_TOUCH)
+          WindowManager.LayoutParams.FLAG_SPLIT_TOUCH)
         privateFlags = WindowManager.LayoutParams.PRIVATE_FLAG_TRUSTED_OVERLAY
         // Avoid announcing window title.
         accessibilityTitle = " "
@@ -140,8 +139,7 @@ class UdfpsControllerOverlay(
                     R.layout.udfps_view, null, false
                 ) as UdfpsView).apply {
                     overlayParams = params
-                    halControlsIllumination = this@UdfpsControllerOverlay.halControlsIllumination
+                    setUdfpsDisplayModeProvider(udfpsDisplayModeProvider)
-                    setHbmProvider(hbmProvider)
                     val animation = inflateUdfpsAnimation(this, controller)
                     if (animation != null) {
                         animation.init()
@@ -250,8 +248,8 @@ class UdfpsControllerOverlay(
         val wasShowing = isShowing
 
         overlayView?.apply {
-            if (isIlluminationRequested) {
+            if (isDisplayConfigured) {
-                stopIllumination()
+                unconfigureDisplay()
             }
             windowManager.removeView(this)
             setOnTouchListener(null)

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsDisplayModeProvider.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 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.biometrics;
+
+import android.annotation.Nullable;
+
+/**
+ * Interface for toggling the optimal display mode for the under-display fingerprint sensor
+ * (UDFPS). For example, the implementation might change the refresh rate and activate a
+ * high-brightness mode.
+ */
+public interface UdfpsDisplayModeProvider {
+
+    /**
+     * Enables the optimal display mode for UDFPS. The mode will persist until
+     * {@link #disable(Runnable)} is called.
+     *
+     * This call must be made from the UI thread. The callback, if provided, will also be invoked
+     * from the UI thread.
+     *
+     * @param onEnabled A runnable that will be executed once the mode is enabled.
+     */
+    void enable(@Nullable Runnable onEnabled);
+
+    /**
+     * Disables the mode that was enabled by {@link #enable(Runnable)}.
+     *
+     * The call must be made from the UI thread. The callback, if provided, will also be invoked
+     * from the UI thread.
+     *
+     * @param onDisabled A runnable that will be executed once mode is disabled.
+     */
+    void disable(@Nullable Runnable onDisabled);
+}

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsDrawable.kt

@@ -51,7 +51,7 @@ abstract class UdfpsDrawable(
             invalidateSelf()
         }
 
-    var isIlluminationShowing: Boolean = false
+    var isDisplayConfigured: Boolean = false
         set(showing) {
             if (field == showing) {
                 return

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsEnrollDrawable.java

@@ -197,7 +197,7 @@ public class UdfpsEnrollDrawable extends UdfpsDrawable {
 
     @Override
     public void draw(@NonNull Canvas canvas) {
-        if (isIlluminationShowing()) {
+        if (isDisplayConfigured()) {
             return;
         }
 

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsFpDrawable.kt

@@ -23,7 +23,7 @@ import android.graphics.Canvas
  */
 class UdfpsFpDrawable(context: Context) : UdfpsDrawable(context) {
     override fun draw(canvas: Canvas) {
-        if (isIlluminationShowing) {
+        if (isDisplayConfigured) {
             return
         }
         fingerprintDrawable.draw(canvas)

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsHbmProvider.java

@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2021 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.biometrics;
-
-import android.annotation.Nullable;
-
-/**
- * Interface for controlling the high-brightness mode (HBM). UdfpsView can use this callback to
- * enable the HBM while showing the fingerprint illumination, and to disable the HBM after the
- * illumination is no longer necessary.
- */
-public interface UdfpsHbmProvider {
-
-    /**
-     * UdfpsView will call this to enable the HBM when the fingerprint illumination is needed.
-     *
-     * This method is a no-op when some type of HBM is already enabled.
-     *
-     * This method must be called from the UI thread. The callback, if provided, will also be
-     * invoked from the UI thread.
-     *
-     * @param onHbmEnabled A runnable that will be executed once HBM is enabled.
-     *
-     * TODO(b/231335067): enableHbm with halControlsIllumination=true shouldn't make sense.
-     *     This only makes sense now because vendor code may rely on the side effects of enableHbm.
-     */
-    void enableHbm(boolean halControlsIllumination, @Nullable Runnable onHbmEnabled);
-
-    /**
-     * UdfpsView will call this to disable HBM when illumination is no longer needed.
-     *
-     * This method will disable HBM if HBM is enabled. Otherwise, if HBM is already disabled,
-     * this method is a no-op.
-     *
-     * The call must be made from the UI thread. The callback, if provided, will also be invoked
-     * from the UI thread.
-     *
-     * @param onHbmDisabled A runnable that will be executed once HBM is disabled.
-     */
-    void disableHbm(@Nullable Runnable onHbmDisabled);
-}

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsIlluminator.java

@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2021 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.biometrics;
-
-import android.annotation.Nullable;
-
-/**
- * Interface that should be implemented by UI's that need to coordinate user touches,
- * views/animations, and modules that start/stop display illumination.
- */
-interface UdfpsIlluminator {
-    /**
-     * @param hbmProvider Invoked when HBM should be enabled or disabled.
-     */
-    void setHbmProvider(@Nullable UdfpsHbmProvider hbmProvider);
-
-    /**
-     * Invoked when illumination should start.
-     * @param onIlluminatedRunnable Invoked when the display has been illuminated.
-     */
-    void startIllumination(@Nullable Runnable onIlluminatedRunnable);
-
-    /**
-     * Invoked when illumination should end.
-     */
-    void stopIllumination();
-}

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsKeyguardView.java

@@ -101,11 +101,11 @@ public class UdfpsKeyguardView extends UdfpsAnimationView {
     }
 
     @Override
-    void onIlluminationStarting() {
+    void onDisplayConfiguring() {
     }
 
     @Override
-    void onIlluminationStopped() {
+    void onDisplayUnconfigured() {
     }
 
     @Override

packages/SystemUI/src/com/android/systemui/biometrics/UdfpsView.kt

@@ -36,12 +36,12 @@ private const val TAG = "UdfpsView"
 class UdfpsView(
     context: Context,
     attrs: AttributeSet?
-) : FrameLayout(context, attrs), DozeReceiver, UdfpsIlluminator {
+) : FrameLayout(context, attrs), DozeReceiver {
 
     // sensorRect may be bigger than the sensor. True sensor dimensions are defined in
     // overlayParams.sensorBounds
     private val sensorRect = RectF()
-    private var hbmProvider: UdfpsHbmProvider? = null
+    private var mUdfpsDisplayMode: UdfpsDisplayModeProvider? = null
     private val debugTextPaint = Paint().apply {
         isAntiAlias = true
         color = Color.BLUE
@@ -56,19 +56,12 @@ class UdfpsView(
             a.getFloat(R.styleable.UdfpsView_sensorTouchAreaCoefficient, 0f)
         }
 
-    private val onIlluminatedDelayMs = context.resources.getInteger(
-        com.android.internal.R.integer.config_udfps_illumination_transition_ms
-    ).toLong()
-
     /** View controller (can be different for enrollment, BiometricPrompt, Keyguard, etc.). */
     var animationViewController: UdfpsAnimationViewController<*>? = null
 
     /** Parameters that affect the position and size of the overlay. */
     var overlayParams = UdfpsOverlayParams()
 
-    /** Whether the HAL is responsible for enabling and disabling of LHBM. */
-    var halControlsIllumination: Boolean = true
-
     /** Debug message. */
     var debugMessage: String? = null
         set(value) {
@@ -76,12 +69,12 @@ class UdfpsView(
             postInvalidate()
         }
 
-    /** When [startIllumination] has been called but not stopped via [stopIllumination]. */
+    /** True after the call to [configureDisplay] and before the call to [unconfigureDisplay]. */
-    var isIlluminationRequested: Boolean = false
+    var isDisplayConfigured: Boolean = false
         private set
 
-    override fun setHbmProvider(provider: UdfpsHbmProvider?) {
+    fun setUdfpsDisplayModeProvider(udfpsDisplayModeProvider: UdfpsDisplayModeProvider?) {
-        hbmProvider = provider
+        mUdfpsDisplayMode = udfpsDisplayModeProvider
     }
 
     // Don't propagate any touch events to the child views.
@@ -124,7 +117,7 @@ class UdfpsView(
 
     override fun onDraw(canvas: Canvas) {
         super.onDraw(canvas)
-        if (!isIlluminationRequested) {
+        if (!isDisplayConfigured) {
             if (!debugMessage.isNullOrEmpty()) {
                 canvas.drawText(debugMessage!!, 0f, 160f, debugTextPaint)
             }
@@ -147,36 +140,15 @@ class UdfpsView(
             !(animationViewController?.shouldPauseAuth() ?: false)
     }
 
-    /**
+    fun configureDisplay(onDisplayConfigured: Runnable) {
-     * Start and run [onIlluminatedRunnable] when the first illumination frame reaches the panel.
+        isDisplayConfigured = true
-     */
+        animationViewController?.onDisplayConfiguring()
-    override fun startIllumination(onIlluminatedRunnable: Runnable?) {
+        mUdfpsDisplayMode?.enable(onDisplayConfigured)
-        isIlluminationRequested = true
-        animationViewController?.onIlluminationStarting()
-        doIlluminate(onIlluminatedRunnable)
     }
 
-    private fun doIlluminate(onIlluminatedRunnable: Runnable?) {
+    fun unconfigureDisplay() {
-        // TODO(b/231335067): enableHbm with halControlsIllumination=true shouldn't make sense.
+        isDisplayConfigured = false
-        // This only makes sense now because vendor code may rely on the side effects of enableHbm.
+        animationViewController?.onDisplayUnconfigured()
-        hbmProvider?.enableHbm(halControlsIllumination) {
+        mUdfpsDisplayMode?.disable(null /* onDisabled */)
-            if (onIlluminatedRunnable != null) {
-                if (halControlsIllumination) {
-                    onIlluminatedRunnable.run()
-                } else {
-                    // No framework API can reliably tell when a frame reaches the panel. A timeout
-                    // is the safest solution.
-                    postDelayed(onIlluminatedRunnable, onIlluminatedDelayMs)
-                }
-            } else {
-                Log.w(TAG, "doIlluminate | onIlluminatedRunnable is null")
-            }
-        }
-    }
-
-    override fun stopIllumination() {
-        isIlluminationRequested = false
-        animationViewController?.onIlluminationStopped()
-        hbmProvider?.disableHbm(null /* onHbmDisabled */)
     }
 }

packages/SystemUI/src/com/android/systemui/dagger/SystemUIModule.java

@@ -30,7 +30,7 @@ import com.android.systemui.BootCompleteCacheImpl;
 import com.android.systemui.appops.dagger.AppOpsModule;
 import com.android.systemui.assist.AssistModule;
 import com.android.systemui.biometrics.AlternateUdfpsTouchProvider;
-import com.android.systemui.biometrics.UdfpsHbmProvider;
+import com.android.systemui.biometrics.UdfpsDisplayModeProvider;
 import com.android.systemui.biometrics.dagger.BiometricsModule;
 import com.android.systemui.classifier.FalsingModule;
 import com.android.systemui.controls.dagger.ControlsModule;
@@ -197,7 +197,7 @@ public abstract class SystemUIModule {
     abstract CentralSurfaces optionalCentralSurfaces();
 
     @BindsOptionalOf
-    abstract UdfpsHbmProvider optionalUdfpsHbmProvider();
+    abstract UdfpsDisplayModeProvider optionalUdfpsDisplayModeProvider();
 
     @BindsOptionalOf
     abstract AlternateUdfpsTouchProvider optionalUdfpsTouchProvider();

packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerOverlayTest.kt

@@ -17,23 +17,13 @@
 package com.android.systemui.biometrics
 
 import android.graphics.Rect
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_AUTH_BP
+import android.hardware.biometrics.BiometricOverlayConstants.*
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_AUTH_KEYGUARD
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_AUTH_OTHER
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_AUTH_SETTINGS
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_ENROLL_ENROLLING
-import android.hardware.biometrics.BiometricOverlayConstants.REASON_ENROLL_FIND_SENSOR
-import android.hardware.biometrics.BiometricOverlayConstants.ShowReason
 import android.hardware.fingerprint.FingerprintManager
 import android.hardware.fingerprint.IUdfpsOverlayControllerCallback
 import android.testing.AndroidTestingRunner
 import android.testing.TestableLooper.RunWithLooper
-import android.view.LayoutInflater
+import android.view.*
-import android.view.MotionEvent
-import android.view.View
-import android.view.Surface
 import android.view.Surface.Rotation
-import android.view.WindowManager
 import android.view.accessibility.AccessibilityManager
 import androidx.test.filters.SmallTest
 import com.android.keyguard.KeyguardUpdateMonitor
@@ -65,7 +55,6 @@ import org.mockito.Mockito.verify
 import org.mockito.junit.MockitoJUnit
 import org.mockito.Mockito.`when` as whenever
 
-private const val HAL_CONTROLS_ILLUMINATION = true
 private const val REQUEST_ID = 2L
 
 // Dimensions for the current display resolution.
@@ -95,8 +84,9 @@ class UdfpsControllerOverlayTest : SysuiTestCase() {
     @Mock private lateinit var configurationController: ConfigurationController
     @Mock private lateinit var systemClock: SystemClock
     @Mock private lateinit var keyguardStateController: KeyguardStateController
-    @Mock private lateinit var unlockedScreenOffAnimationController: UnlockedScreenOffAnimationController
+    @Mock private lateinit var unlockedScreenOffAnimationController:
-    @Mock private lateinit var hbmProvider: UdfpsHbmProvider
+            UnlockedScreenOffAnimationController
+    @Mock private lateinit var udfpsDisplayMode: UdfpsDisplayModeProvider
     @Mock private lateinit var controllerCallback: IUdfpsOverlayControllerCallback
     @Mock private lateinit var udfpsController: UdfpsController
     @Mock private lateinit var udfpsView: UdfpsView
@@ -130,8 +120,9 @@ class UdfpsControllerOverlayTest : SysuiTestCase() {
             statusBarStateController, panelExpansionStateManager, statusBarKeyguardViewManager,
             keyguardUpdateMonitor, dialogManager, dumpManager, transitionController,
             configurationController, systemClock, keyguardStateController,
-            unlockedScreenOffAnimationController, HAL_CONTROLS_ILLUMINATION, hbmProvider,
+            unlockedScreenOffAnimationController, udfpsDisplayMode, REQUEST_ID, reason,
-            REQUEST_ID, reason, controllerCallback, onTouch, activityLaunchAnimator)
+            controllerCallback, onTouch, activityLaunchAnimator
+        )
         block()
     }
 
@@ -246,7 +237,7 @@ class UdfpsControllerOverlayTest : SysuiTestCase() {
         val didShow = controllerOverlay.show(udfpsController, overlayParams)
 
         verify(windowManager).addView(eq(controllerOverlay.overlayView), any())
-        verify(udfpsView).setHbmProvider(eq(hbmProvider))
+        verify(udfpsView).setUdfpsDisplayModeProvider(eq(udfpsDisplayMode))
         verify(udfpsView).animationViewController = any()
         verify(udfpsView).addView(any())
 
@@ -351,12 +342,12 @@ class UdfpsControllerOverlayTest : SysuiTestCase() {
     }
 
     @Test
-    fun stopIlluminatingOnHide() = withReason(REASON_AUTH_BP) {
+    fun unconfigureDisplayOnHide() = withReason(REASON_AUTH_BP) {
-        whenever(udfpsView.isIlluminationRequested).thenReturn(true)
+        whenever(udfpsView.isDisplayConfigured).thenReturn(true)
 
         controllerOverlay.show(udfpsController, overlayParams)
         controllerOverlay.hide()
-        verify(udfpsView).stopIllumination()
+        verify(udfpsView).unconfigureDisplay()
     }
 
     @Test

packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerTest.java

@@ -125,7 +125,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
     @Mock
     private WindowManager mWindowManager;
     @Mock
-    private UdfpsHbmProvider mHbmProvider;
+    private UdfpsDisplayModeProvider mDisplayModeProvider;
     @Mock
     private StatusBarStateController mStatusBarStateController;
     @Mock
@@ -193,7 +193,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
     private IUdfpsOverlayController mOverlayController;
     @Captor private ArgumentCaptor<UdfpsView.OnTouchListener> mTouchListenerCaptor;
     @Captor private ArgumentCaptor<View.OnHoverListener> mHoverListenerCaptor;
-    @Captor private ArgumentCaptor<Runnable> mOnIlluminatedRunnableCaptor;
+    @Captor private ArgumentCaptor<Runnable> mOnDisplayConfiguredCaptor;
     @Captor private ArgumentCaptor<ScreenLifecycle.Observer> mScreenObserverCaptor;
     private ScreenLifecycle.Observer mScreenObserver;
 
@@ -256,7 +256,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
                 mVibrator,
                 mUdfpsHapticsSimulator,
                 mUdfpsShell,
-                Optional.of(mHbmProvider),
+                Optional.of(mDisplayModeProvider),
                 mKeyguardStateController,
                 mDisplayManager,
                 mHandler,
@@ -506,7 +506,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
         final float expectedMajor = touchMajor / scaleFactor;
 
         // Configure UdfpsView to accept the ACTION_DOWN event
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(false);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(false);
         when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
 
         // Show the overlay.
@@ -584,7 +584,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
     @Test
     public void fingerDown() throws RemoteException {
         // Configure UdfpsView to accept the ACTION_DOWN event
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(false);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(false);
         when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
         when(mKeyguardUpdateMonitor.isFingerprintDetectionRunning()).thenReturn(true);
 
@@ -611,12 +611,12 @@ public class UdfpsControllerTest extends SysuiTestCase {
         verify(mFingerprintManager, never()).onPointerDown(anyLong(), anyInt(), anyInt(), anyInt(),
                 anyFloat(), anyFloat());
         verify(mLatencyTracker).onActionStart(eq(LatencyTracker.ACTION_UDFPS_ILLUMINATE));
-        // AND illumination begins
+        // AND display configuration begins
-        verify(mUdfpsView).startIllumination(mOnIlluminatedRunnableCaptor.capture());
+        verify(mUdfpsView).configureDisplay(mOnDisplayConfiguredCaptor.capture());
         verify(mLatencyTracker, never()).onActionEnd(eq(LatencyTracker.ACTION_UDFPS_ILLUMINATE));
         verify(mKeyguardUpdateMonitor).onUdfpsPointerDown(eq((int) TEST_REQUEST_ID));
-        // AND onIlluminatedRunnable notifies FingerprintManager about onUiReady
+        // AND onDisplayConfigured notifies FingerprintManager about onUiReady
-        mOnIlluminatedRunnableCaptor.getValue().run();
+        mOnDisplayConfiguredCaptor.getValue().run();
         mBiometricsExecutor.runAllReady();
         InOrder inOrder = inOrder(mAlternateTouchProvider, mLatencyTracker);
         inOrder.verify(mAlternateTouchProvider).onUiReady();
@@ -634,10 +634,10 @@ public class UdfpsControllerTest extends SysuiTestCase {
         // WHEN fingerprint is requested because of AOD interrupt
         mUdfpsController.onAodInterrupt(0, 0, 2f, 3f);
         mFgExecutor.runAllReady();
-        // THEN illumination begins
+        // THEN display configuration begins
-        // AND onIlluminatedRunnable that notifies FingerprintManager is set
+        // AND onDisplayConfigured notifies FingerprintManager about onUiReady
-        verify(mUdfpsView).startIllumination(mOnIlluminatedRunnableCaptor.capture());
+        verify(mUdfpsView).configureDisplay(mOnDisplayConfiguredCaptor.capture());
-        mOnIlluminatedRunnableCaptor.getValue().run();
+        mOnDisplayConfiguredCaptor.getValue().run();
         mBiometricsExecutor.runAllReady();
         verify(mAlternateTouchProvider).onPointerDown(eq(TEST_REQUEST_ID),
                 eq(0), eq(0), eq(3f) /* minor */, eq(2f) /* major */);
@@ -655,11 +655,11 @@ public class UdfpsControllerTest extends SysuiTestCase {
         mFgExecutor.runAllReady();
         when(mKeyguardUpdateMonitor.isFingerprintDetectionRunning()).thenReturn(true);
         mUdfpsController.onAodInterrupt(0, 0, 0f, 0f);
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(true);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(true);
         // WHEN it is cancelled
         mUdfpsController.onCancelUdfps();
-        // THEN the illumination is hidden
+        // THEN the display is unconfigured
-        verify(mUdfpsView).stopIllumination();
+        verify(mUdfpsView).unconfigureDisplay();
     }
 
     @Test
@@ -672,12 +672,12 @@ public class UdfpsControllerTest extends SysuiTestCase {
         when(mKeyguardUpdateMonitor.isFingerprintDetectionRunning()).thenReturn(true);
         mUdfpsController.onAodInterrupt(0, 0, 0f, 0f);
         mFgExecutor.runAllReady();
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(true);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(true);
         // WHEN it times out
         mFgExecutor.advanceClockToNext();
         mFgExecutor.runAllReady();
-        // THEN the illumination is hidden
+        // THEN the display is unconfigured
-        verify(mUdfpsView).stopIllumination();
+        verify(mUdfpsView).unconfigureDisplay();
     }
 
     @Test
@@ -692,8 +692,8 @@ public class UdfpsControllerTest extends SysuiTestCase {
         when(mKeyguardUpdateMonitor.isFingerprintDetectionRunning()).thenReturn(true);
         mUdfpsController.onAodInterrupt(0, 0, 0f, 0f);
 
-        // THEN no illumination because screen is off
+        // THEN display doesn't get configured because it's off
-        verify(mUdfpsView, never()).startIllumination(any());
+        verify(mUdfpsView, never()).configureDisplay(any());
     }
 
     @Test
@@ -709,14 +709,14 @@ public class UdfpsControllerTest extends SysuiTestCase {
         when(mKeyguardUpdateMonitor.isFingerprintDetectionRunning()).thenReturn(false);
         mUdfpsController.onAodInterrupt(0, 0, 0f, 0f);
 
-        // THEN no illumination because screen is off
+        // THEN display doesn't get configured because it's off
-        verify(mUdfpsView, never()).startIllumination(any());
+        verify(mUdfpsView, never()).configureDisplay(any());
     }
 
     @Test
     public void playHapticOnTouchUdfpsArea_a11yTouchExplorationEnabled() throws RemoteException {
         // Configure UdfpsView to accept the ACTION_DOWN event
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(false);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(false);
         when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
 
         // GIVEN that the overlay is showing and a11y touch exploration enabled
@@ -751,7 +751,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
     @Test
     public void noHapticOnTouchUdfpsArea_a11yTouchExplorationDisabled() throws RemoteException {
         // Configure UdfpsView to accept the ACTION_DOWN event
-        when(mUdfpsView.isIlluminationRequested()).thenReturn(false);
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(false);
         when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
 
         // GIVEN that the overlay is showing and a11y touch exploration NOT enabled

packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsViewTest.kt

@@ -36,13 +36,12 @@ import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
-import org.mockito.ArgumentMatchers.anyBoolean
 import org.mockito.Mock
 import org.mockito.Mockito.never
 import org.mockito.Mockito.nullable
 import org.mockito.Mockito.verify
-import org.mockito.junit.MockitoJUnit
 import org.mockito.Mockito.`when` as whenever
+import org.mockito.junit.MockitoJUnit
 
 private const val SENSOR_X = 50
 private const val SENSOR_Y = 250
@@ -57,7 +56,7 @@ class UdfpsViewTest : SysuiTestCase() {
     var rule = MockitoJUnit.rule()
 
     @Mock
-    lateinit var hbmProvider: UdfpsHbmProvider
+    lateinit var hbmProvider: UdfpsDisplayModeProvider
     @Mock
     lateinit var animationViewController: UdfpsAnimationViewController<UdfpsAnimationView>
 
@@ -66,13 +65,11 @@ class UdfpsViewTest : SysuiTestCase() {
     @Before
     fun setup() {
         context.setTheme(R.style.Theme_AppCompat)
-        context.orCreateTestableResources.addOverride(
-            com.android.internal.R.integer.config_udfps_illumination_transition_ms, 0)
         view = LayoutInflater.from(context).inflate(R.layout.udfps_view, null) as UdfpsView
         view.animationViewController = animationViewController
         val sensorBounds = SensorLocationInternal("", SENSOR_X, SENSOR_Y, SENSOR_RADIUS).rect
         view.overlayParams = UdfpsOverlayParams(sensorBounds, 1920, 1080, 1f, Surface.ROTATION_0)
-        view.setHbmProvider(hbmProvider)
+        view.setUdfpsDisplayModeProvider(hbmProvider)
         ViewUtils.attachView(view)
     }
 
@@ -143,27 +140,27 @@ class UdfpsViewTest : SysuiTestCase() {
     @Test
     fun startAndStopIllumination() {
         val onDone: Runnable = mock()
-        view.startIllumination(onDone)
+        view.configureDisplay(onDone)
 
         val illuminator = withArgCaptor<Runnable> {
-            verify(hbmProvider).enableHbm(anyBoolean(), capture())
+            verify(hbmProvider).enable(capture())
         }
 
-        assertThat(view.isIlluminationRequested).isTrue()
+        assertThat(view.isDisplayConfigured).isTrue()
-        verify(animationViewController).onIlluminationStarting()
+        verify(animationViewController).onDisplayConfiguring()
-        verify(animationViewController, never()).onIlluminationStopped()
+        verify(animationViewController, never()).onDisplayUnconfigured()
         verify(onDone, never()).run()
 
         // fake illumination event
         illuminator.run()
         waitForLooper()
         verify(onDone).run()
-        verify(hbmProvider, never()).disableHbm(any())
+        verify(hbmProvider, never()).disable(any())
 
-        view.stopIllumination()
+        view.unconfigureDisplay()
-        assertThat(view.isIlluminationRequested).isFalse()
+        assertThat(view.isDisplayConfigured).isFalse()
-        verify(animationViewController).onIlluminationStopped()
+        verify(animationViewController).onDisplayUnconfigured()
-        verify(hbmProvider).disableHbm(nullable(Runnable::class.java))
+        verify(hbmProvider).disable(nullable(Runnable::class.java))
     }
 
     private fun waitForLooper() = TestableLooper.get(this).processAllMessages()