1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef SCREEN_BRIGHTNESS_TASK
17#define SCREEN_BRIGHTNESS_TASK
18
19#include <map>
20#include <mutex>
21
22#include "nocopyable.h"
23#include "timer.h"
24
25#include "finite_state_machine.h"
26#include "iscreen_brightness_task.h"
27
28namespace OHOS {
29namespace UserIam {
30namespace FaceAuth {
31class ScreenBrightnessTask : public IScreenBrightnessTask,
32                             public std::enable_shared_from_this<ScreenBrightnessTask>,
33                             public NoCopyable {
34public:
35    ScreenBrightnessTask();
36    ~ScreenBrightnessTask() override;
37
38    void Start() override;
39    void Stop() override;
40    void SetAmbientLight(float lux) override;
41    void RegisterDestructCallback(DestructCallback callback) override;
42
43    void OnStartDelayTimeout();
44    void OnIncreaseBrightness();
45
46private:
47    enum State : uint32_t {
48        S_INIT = 0,
49        S_WAIT_AMBIENT_LIGHT_INFO_AND_START_DELAY = 1,
50        S_WAIT_AMBIENT_LIGHT_INFO = 2,
51        S_WAIT_START_DELAY = 3,
52        S_INCREASING_BRIGHTNESS = 4,
53        S_END = 5
54    };
55    enum Event : uint32_t {
56        E_START = 0,
57        E_START_DELAY_EXPIRED = 1,
58        E_RECEIVE_AMBIENT_LIGHT_INFO = 2,
59        E_INCREASE_BRIGHTNESS = 3,
60        E_STOP = 4,
61    };
62
63    std::shared_ptr<FiniteStateMachine> MakeFiniteStateMachine();
64    void StartProcess();
65    void BeginIncreaseBrightness();
66    void DoIncreaseBrightness();
67    void EndProcess();
68
69    std::shared_ptr<FiniteStateMachine> machine_;
70    Utils::Timer timer_;
71    uint32_t currTimerId_;
72    float currentAmbientLightLux_;
73    std::mutex currentAmbientLightLuxMutex_;
74    uint32_t currentBrightness_;
75    uint32_t increaseBrightnessIndex_;
76    uint32_t increaseBrightnessInterval_;
77    uint32_t increaseBrightnessMax_;
78    DestructCallback destructCallback_;
79};
80} // namespace FaceAuth
81} // namespace UserIam
82} // namespace OHOS
83
84#endif // SCREEN_BRIGHTNESS_TASK