Inform the falsing manager about UDFPS touches on down

Instead of up/cancel. The new UDFPS touch handling doesn't
receive the up/cancel events until after the falsing manager
has already evaluated the touch as a false vs valid touch,
so UDFPS touches were penalizing the falsing confidence
too much.

Test: atest UdfpsControllerTest
Test: manually enable falsing logs and see that UDFPS touches
don't greatly increase the falsing confidence of the FalsingManager
(adb shell setprop log.tag.FalsingManager DEBUG)
Fixes: 288235975

Change-Id: Ic4b8b0b52343d357e0c807bede64598836d159b0

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

@@ -595,6 +595,13 @@ public class UdfpsController implements DozeReceiver, Dumpable {
 
                 // Pilfer if valid overlap, don't allow following events to reach keyguard
                 shouldPilfer = true;
+
+                // Touch is a valid UDFPS touch. Inform the falsing manager so that the touch
+                // isn't counted against the falsing algorithm as an accidental touch.
+                // We do this on the DOWN event instead of CANCEL/UP because the CANCEL/UP events
+                // get sent too late to this receiver (after the actual cancel/up motions occur),
+                // and therefore wouldn't end up being used as part of the falsing algo.
+                mFalsingManager.isFalseTouch(UDFPS_AUTHENTICATION);
                 break;
 
             case UP:
@@ -614,7 +621,6 @@ public class UdfpsController implements DozeReceiver, Dumpable {
                         data.getTime(),
                         data.getGestureStart(),
                         mStatusBarStateController.isDozing());
-                mFalsingManager.isFalseTouch(UDFPS_AUTHENTICATION);
                 break;
 
             case UNCHANGED:

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

@@ -22,6 +22,7 @@ import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_UP;
 
 import static com.android.internal.util.FunctionalUtils.ThrowingConsumer;
+import static com.android.systemui.classifier.Classifier.UDFPS_AUTHENTICATION;
 
 import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertFalse;
@@ -59,6 +60,7 @@ import android.os.PowerManager;
 import android.os.RemoteException;
 import android.os.VibrationAttributes;
 import android.testing.TestableLooper.RunWithLooper;
+import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.Surface;
@@ -1202,9 +1204,54 @@ public class UdfpsControllerTest extends SysuiTestCase {
         verify(mFingerprintManager).onPointerUp(anyLong(), anyInt());
     }
 
+    @Test
+    public void fingerDown_falsingManagerInformed() throws RemoteException {
+        final Pair<TouchProcessorResult, TouchProcessorResult> touchProcessorResult =
+                givenAcceptFingerDownEvent();
+
+        // WHEN ACTION_DOWN is received
+        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
+                touchProcessorResult.first);
+        MotionEvent downEvent = MotionEvent.obtain(0, 0, ACTION_DOWN, 0, 0, 0);
+        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, downEvent);
+        mBiometricExecutor.runAllReady();
+        downEvent.recycle();
+
+        // THEN falsing manager is informed of the touch
+        verify(mFalsingManager).isFalseTouch(UDFPS_AUTHENTICATION);
+    }
+
     @Test
     public void onTouch_withNewTouchDetection_shouldCallNewFingerprintManagerPath()
             throws RemoteException {
+        final Pair<TouchProcessorResult, TouchProcessorResult> processorResultDownAndUp =
+                givenAcceptFingerDownEvent();
+
+        // WHEN ACTION_DOWN is received
+        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
+                processorResultDownAndUp.first);
+        MotionEvent downEvent = MotionEvent.obtain(0, 0, ACTION_DOWN, 0, 0, 0);
+        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, downEvent);
+        mBiometricExecutor.runAllReady();
+        downEvent.recycle();
+
+        // AND ACTION_UP is received
+        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
+                processorResultDownAndUp.second);
+        MotionEvent upEvent = MotionEvent.obtain(0, 0, MotionEvent.ACTION_UP, 0, 0, 0);
+        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, upEvent);
+        mBiometricExecutor.runAllReady();
+        upEvent.recycle();
+
+        // THEN the new FingerprintManager path is invoked.
+        verify(mFingerprintManager).onPointerDown(anyLong(), anyInt(), anyInt(), anyFloat(),
+                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(), anyBoolean());
+        verify(mFingerprintManager).onPointerUp(anyLong(), anyInt(), anyInt(), anyFloat(),
+                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(), anyBoolean());
+    }
+
+    private Pair<TouchProcessorResult, TouchProcessorResult> givenAcceptFingerDownEvent()
+            throws RemoteException {
         final NormalizedTouchData touchData = new NormalizedTouchData(0, 0f, 0f, 0f, 0f, 0f, 0L,
                 0L);
         final TouchProcessorResult processorResultDown = new TouchProcessorResult.ProcessedTouch(
@@ -1230,27 +1277,7 @@ public class UdfpsControllerTest extends SysuiTestCase {
 
         verify(mUdfpsView).setOnTouchListener(mTouchListenerCaptor.capture());
 
-        // WHEN ACTION_DOWN is received
+        return new Pair<>(processorResultDown, processorResultUp);
-        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
-                processorResultDown);
-        MotionEvent downEvent = MotionEvent.obtain(0, 0, ACTION_DOWN, 0, 0, 0);
-        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, downEvent);
-        mBiometricExecutor.runAllReady();
-        downEvent.recycle();
-
-        // AND ACTION_UP is received
-        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
-                processorResultUp);
-        MotionEvent upEvent = MotionEvent.obtain(0, 0, MotionEvent.ACTION_UP, 0, 0, 0);
-        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, upEvent);
-        mBiometricExecutor.runAllReady();
-        upEvent.recycle();
-
-        // THEN the new FingerprintManager path is invoked.
-        verify(mFingerprintManager).onPointerDown(anyLong(), anyInt(), anyInt(), anyFloat(),
-                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(), anyBoolean());
-        verify(mFingerprintManager).onPointerUp(anyLong(), anyInt(), anyInt(), anyFloat(),
-                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(), anyBoolean());
     }
 
     @Test