| /* |
| * 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 android.hardware.face; |
| |
| import android.annotation.IntDef; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| |
| /** |
| * A collection of constants representing different stages of face enrollment. |
| * |
| * @hide |
| */ |
| public final class FaceEnrollStages { |
| // Prevent instantiation. |
| private FaceEnrollStages() {} |
| |
| /** |
| * A stage that may occur during face enrollment. |
| * |
| * @hide |
| */ |
| @IntDef({ |
| UNKNOWN, |
| FIRST_FRAME_RECEIVED, |
| WAITING_FOR_CENTERING, |
| HOLD_STILL_IN_CENTER, |
| ENROLLING_MOVEMENT_1, |
| ENROLLING_MOVEMENT_2, |
| ENROLLMENT_FINISHED |
| }) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface FaceEnrollStage {} |
| |
| /** |
| * The current enrollment stage is not known. |
| */ |
| public static final int UNKNOWN = 0; |
| |
| /** |
| * Enrollment has just begun. No action is needed from the user yet. |
| */ |
| public static final int FIRST_FRAME_RECEIVED = 1; |
| |
| /** |
| * The user must center their face in the frame. |
| */ |
| public static final int WAITING_FOR_CENTERING = 2; |
| |
| /** |
| * The user must keep their face centered in the frame. |
| */ |
| public static final int HOLD_STILL_IN_CENTER = 3; |
| |
| /** |
| * The user must follow a first set of movement instructions. |
| */ |
| public static final int ENROLLING_MOVEMENT_1 = 4; |
| |
| /** |
| * The user must follow a second set of movement instructions. |
| */ |
| public static final int ENROLLING_MOVEMENT_2 = 5; |
| |
| /** |
| * Enrollment has completed. No more action is needed from the user. |
| */ |
| public static final int ENROLLMENT_FINISHED = 6; |
| } |