1 /*
2 * Copyright (c) 2024 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 #include "display_engine/rs_luminance_control.h"
17
18 namespace {
19 constexpr float HDR_DEFAULT_TMO_NIT = 1000.0f;
20 constexpr float HDR_DEFAULT_SCALER = 1000.0f / 203.0f;
21 }
22
23 namespace OHOS {
24 namespace Rosen {
Get()25 RSLuminanceControl& RSLuminanceControl::Get()
26 {
27 static RSLuminanceControl instance;
28 return instance;
29 }
30
~RSLuminanceControl()31 RSLuminanceControl::~RSLuminanceControl()
32 {
33 // destructor
34 }
35
SetHdrStatus(ScreenId screenId,HdrStatus hdrStatus)36 bool RSLuminanceControl::SetHdrStatus(ScreenId screenId, HdrStatus hdrStatus)
37 {
38 // Update HDR status in order to determine brightness.
39 return false;
40 }
41
IsHdrOn(ScreenId screenId)42 bool RSLuminanceControl::IsHdrOn(ScreenId screenId)
43 {
44 return false;
45 }
46
IsDimmingOn(ScreenId screenId)47 bool RSLuminanceControl::IsDimmingOn(ScreenId screenId)
48 {
49 return false;
50 }
51
DimmingIncrease(ScreenId screenId)52 void RSLuminanceControl::DimmingIncrease(ScreenId screenId)
53 {
54 // Update HDR dimming index.
55 }
56
SetSdrLuminance(ScreenId screenId,uint32_t level)57 void RSLuminanceControl::SetSdrLuminance(ScreenId screenId, uint32_t level)
58 {
59 // Update SDR brightness.
60 }
61
GetNewHdrLuminance(ScreenId screenId)62 uint32_t RSLuminanceControl::GetNewHdrLuminance(ScreenId screenId)
63 {
64 return 0;
65 }
66
SetNowHdrLuminance(ScreenId screenId,uint32_t level)67 void RSLuminanceControl::SetNowHdrLuminance(ScreenId screenId, uint32_t level)
68 {
69 // Update HDR brightness after dimming increase.
70 }
71
IsNeedUpdateLuminance(ScreenId screenId)72 bool RSLuminanceControl::IsNeedUpdateLuminance(ScreenId screenId)
73 {
74 return false;
75 }
76
GetSdrDisplayNits(ScreenId screenId)77 float RSLuminanceControl::GetSdrDisplayNits(ScreenId screenId)
78 {
79 return HDR_DEFAULT_TMO_NIT;
80 }
81
GetDisplayNits(ScreenId screenId)82 float RSLuminanceControl::GetDisplayNits(ScreenId screenId)
83 {
84 return HDR_DEFAULT_TMO_NIT;
85 }
86
GetHdrBrightnessRatio(ScreenId screenId,uint32_t mode)87 double RSLuminanceControl::GetHdrBrightnessRatio(ScreenId screenId, uint32_t mode)
88 {
89 return 1.0; // 1.0 refers to default value, no need to process.
90 }
91
CalScaler(const float & maxContentLightLevel,const std::vector<uint8_t> & dynamicMetadata,const float & ratio)92 float RSLuminanceControl::CalScaler(const float& maxContentLightLevel,
93 const std::vector<uint8_t>& dynamicMetadata, const float& ratio)
94 {
95 return HDR_DEFAULT_SCALER;
96 }
97
IsHdrPictureOn()98 bool RSLuminanceControl::IsHdrPictureOn()
99 {
100 return false;
101 }
102
IsCloseHardwareHdr()103 bool IsCloseHardwareHdr()
104 {
105 return false;
106 }
107 } // namespace Rosen
108 } // namespace OHOS