1/*
2 * Copyright (c) 2023-2023 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 BRIGHTNESS_BASE_H
17#define BRIGHTNESS_BASE_H
18
19#include <ctime>
20#include <cmath>
21#include <string>
22
23namespace OHOS {
24namespace DisplayPowerMgr {
25
26constexpr uint32_t DEFAULT_DISPLAY_ID = 0;
27constexpr uint32_t OUTTER_SCREEN_DISPLAY_ID = 5;
28const float EPSILON = 0.0000001f;
29const int MSECPERSEC = 1000;
30const int NSECPERMSEC = 1000000;
31
32enum class BrightnessFilterMode {
33    MEAN_FILTER = 0,
34    WEIGHT_FILTER,
35    FITLER_END
36};
37
38enum class BrightnessSceneMode {
39    MODE_DEFAULT = 0,
40    MODE_GAME,
41    MODE_VIDEO,
42    SCENCE_END
43};
44
45enum class BrightnessModeState {
46    CAMERA_MODE,
47    GAME_MODE,
48    DEFAULT_MODE
49};
50
51inline int64_t GetCurrentTimeMillis()
52{
53    struct timespec val {};
54    if (clock_gettime(CLOCK_BOOTTIME, &val) == 0) {
55        return static_cast<int64_t>(val.tv_sec) * MSECPERSEC + val.tv_nsec / NSECPERMSEC;
56    }
57    return 0;
58}
59
60inline bool IsEqualF(float a, float b)
61{
62    return fabs(a - b) < EPSILON;
63}
64} // namespace BrightnessPowerMgr
65} // namespace OHOS
66#endif // BRIGHTNESS_BASE_H