/*
 * Copyright (C) 2023 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.biometrics.common;

/**
 * Display state during an operation.
 *
 * @hide
 */
@VintfStability
@Backing(type="int")
enum DisplayState {
    /** The display state is unknown. */
    UNKNOWN,

    /** The display is on and showing the lockscreen (or an occluding app). */
    LOCKSCREEN,

    /** The display is off or dozing. */
    NO_UI,

    /** The display is showing a screensaver (dreaming). */
    SCREENSAVER,

    /** The display is dreaming with always on display. */
    AOD,
}
