base: Port face unlock feature [3/4]

core/java/android/hardware/face/FaceManager.java

@@ -246,6 +246,59 @@ public void authenticate(@Nullable CryptoObject crypto, @Nullable CancellationSi
         }
     }
 
+    /**
+     * Request face authentication enrollment. This call operates the face authentication hardware
+     * and starts capturing images. Progress will be indicated by callbacks to the
+     * {@link EnrollmentCallback} object. It terminates when
+     * {@link EnrollmentCallback#onEnrollmentError(int, CharSequence)} or
+     * {@link EnrollmentCallback#onEnrollmentProgress(int) is called with remaining == 0, at
+     * which point the object is no longer valid. The operation can be canceled by using the
+     * provided cancel object.
+     *
+     * @param token    a unique token provided by a recent creation or verification of device
+     *                 credentials (e.g. pin, pattern or password).
+     * @param cancel   an object that can be used to cancel enrollment
+     * @param flags    optional flags
+     * @param callback an object to receive enrollment events
+     * @hide
+     */
+    @RequiresPermission(MANAGE_BIOMETRIC)
+    public void enroll(byte[] token, CancellationSignal cancel,
+            EnrollmentCallback callback, int[] disabledFeatures) {
+        if (callback == null) {
+            throw new IllegalArgumentException("Must supply an enrollment callback");
+        }
+
+        if (cancel != null) {
+            if (cancel.isCanceled()) {
+                Log.w(TAG, "enrollment already canceled");
+                return;
+            } else {
+                cancel.setOnCancelListener(new OnEnrollCancelListener());
+            }
+        }
+
+        if (mService != null) {
+            try {
+                mEnrollmentCallback = callback;
+                Trace.beginSection("FaceManager#enroll");
+                mService.enrollMoto(mToken, token, mServiceReceiver,
+                        mContext.getOpPackageName(), disabledFeatures);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Remote exception in enroll: ", e);
+                if (callback != null) {
+                    // Though this may not be a hardware issue, it will cause apps to give up or
+                    // try again later.
+                    callback.onEnrollmentError(FACE_ERROR_HW_UNAVAILABLE,
+                            getErrorString(mContext, FACE_ERROR_HW_UNAVAILABLE,
+                                0 /* vendorCode */));
+                }
+            } finally {
+                Trace.endSection();
+            }
+        }
+    }
+
     /**
      * Request face authentication enrollment. This call operates the face authentication hardware
      * and starts capturing images. Progress will be indicated by callbacks to the

core/java/android/hardware/face/IFaceService.aidl

@@ -108,4 +108,9 @@ interface IFaceService {
 
     // Initialize the OEM configured biometric strength
     void initConfiguredStrength(int strength);
+
+    // Moto additions
+    // Start face enrollment
+    void enrollMoto(IBinder token, in byte [] cryptoToken, IFaceServiceReceiver receiver,
+            String opPackageName, in int [] disabledFeatures);
 }

services/core/Android.bp

@@ -134,6 +134,7 @@ java_library_static {
         "overlayable_policy_aidl-java",
         "SurfaceFlingerProperties",
         "vendor.lineage.biometrics.fingerprint.inscreen-V1.0-java",
+        "faceunlock_utils",
     ],
 }