1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.display.brightness.strategy;
18 
19 import android.annotation.NonNull;
20 import android.hardware.display.DisplayManagerInternal;
21 
22 import com.android.server.display.DisplayBrightnessState;
23 
24 /**
25  * Decides the DisplayBrighntessState that the display should change to based on strategy-specific
26  * logic within each implementation. Clamping should be done outside of DisplayBrightnessStrategy if
27  * not an integral part of the strategy.
28  */
29 public interface DisplayBrightnessStrategy {
30     /**
31      * Decides the DisplayBrightnessState that the system should change to.
32      *
33      * @param displayPowerRequest The request to evaluate the updated brightness
34      */
updateBrightness( DisplayManagerInternal.DisplayPowerRequest displayPowerRequest)35     DisplayBrightnessState updateBrightness(
36             DisplayManagerInternal.DisplayPowerRequest displayPowerRequest);
37 
38     /**
39      * Returns the name of the Strategy
40      */
41     @NonNull
getName()42     String getName();
43 }
44