1 /*
2 * Copyright (C) 2024 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 #pragma once
18
19 #include <chrono>
20 #include <cmath>
21 #include <cstdint>
22 #include "interface/Event.h"
23 #include "interface/VariableRefreshRateInterface.h"
24
clearBit(uint32_t & data,uint32_t bit)25 inline void clearBit(uint32_t& data, uint32_t bit) {
26 data &= ~(1L << (bit));
27 }
28
setBit(uint32_t & data,uint32_t bit)29 inline void setBit(uint32_t& data, uint32_t bit) {
30 data |= (1L << (bit));
31 }
32
setBitField(uint32_t & data,uint32_t value,uint32_t offset,uint32_t fieldMask)33 inline void setBitField(uint32_t& data, uint32_t value, uint32_t offset, uint32_t fieldMask) {
34 data = (data & ~fieldMask) | (((value << offset) & fieldMask));
35 }
36
37 namespace android::hardware::graphics::composer {
38
39 struct TimedEvent;
40
41 constexpr int64_t kMillisecondToNanoSecond = 1000000;
42
43 enum PresentFrameFlag {
44 kUpdateRefreshRateIndicatorLayerOnly = (1 << 0),
45 kIsYuv = (1 << 1),
46 kPresentingWhenDoze = (1 << 2),
47 };
48
49 template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
roundDivide(T divident,T divisor)50 T roundDivide(T divident, T divisor) {
51 if (divident < 0 || divisor <= 0) {
52 return 0;
53 }
54 return (divident + (divisor / 2)) / divisor;
55 }
56
57 template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
58 struct Fraction {
59 T mNum;
60 T mDen;
61
mNumFraction62 Fraction(T num = 0, T denom = 1) : mNum(num), mDen(denom) {
63 if (mDen < 0) {
64 mNum = -mNum;
65 mDen = -mDen;
66 }
67 }
68
roundFraction69 T round() { return roundDivide(mNum, mDen); }
70
71 bool operator<(const Fraction<T>& other) const { return mNum * other.mDen < other.mNum * mDen; }
72
73 bool operator==(const Fraction<T>& other) const {
74 return mNum * other.mDen == other.mNum * mDen;
75 }
76 };
77
78 template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
freqToDurationNs(Fraction<T> freq)79 int64_t freqToDurationNs(Fraction<T> freq) {
80 return roundDivide(std::nano::den * static_cast<int64_t>(freq.mDen),
81 static_cast<int64_t>(freq.mNum));
82 }
83
84 template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
durationNsToFreq(T durationNs)85 T durationNsToFreq(T durationNs) {
86 auto res = roundDivide(std::nano::den, static_cast<int64_t>(durationNs));
87 return static_cast<T>(res);
88 }
89
90 template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
freqToDurationNs(T freq)91 T freqToDurationNs(T freq) {
92 auto res = roundDivide(std::nano::den, static_cast<int64_t>(freq));
93 return static_cast<T>(res);
94 }
95
96 int64_t getSteadyClockTimeMs();
97 int64_t getSteadyClockTimeNs();
98
99 int64_t getBootClockTimeMs();
100 int64_t getBootClockTimeNs();
101
102 bool hasPresentFrameFlag(int flag, PresentFrameFlag target);
103
104 bool isPowerModeOff(int powerMode);
105
106 bool isPresentRefresh(RefreshSource refreshSource);
107
108 void setTimedEventWithAbsoluteTime(TimedEvent& event);
109
110 int64_t steadyClockTimeToBootClockTimeNs(int64_t steadyClockTimeNs);
111
112 } // namespace android::hardware::graphics::composer
113