blob: 1aa6aded75c005364939913a777ce56e1502810f [file] [log] [blame]
Ana Krulecb43429d2019-01-09 14:28:51 -08001/*
2 * Copyright 2019 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 <algorithm>
20#include <numeric>
21
Ana Krulecb43429d2019-01-09 14:28:51 -080022#include "android-base/stringprintf.h"
23
Ana Krulec4593b692019-01-11 22:07:25 -080024#include "DisplayHardware/HWComposer.h"
25#include "Scheduler/SchedulerUtils.h"
26
Ana Krulecb43429d2019-01-09 14:28:51 -080027namespace android {
28namespace scheduler {
29
30/**
Ady Abraham1902d072019-03-01 17:18:59 -080031 * This class is used to encapsulate configuration for refresh rates. It holds information
Ana Krulecb43429d2019-01-09 14:28:51 -080032 * about available refresh rates on the device, and the mapping between the numbers and human
33 * readable names.
34 */
35class RefreshRateConfigs {
36public:
37 // Enum to indicate which vsync rate to run at. Power saving is intended to be the lowest
38 // (eg. when the screen is in AOD mode or off), default is the old 60Hz, and performance
39 // is the new 90Hz. Eventually we want to have a way for vendors to map these in the configs.
40 enum class RefreshRateType { POWER_SAVING, DEFAULT, PERFORMANCE };
41
42 struct RefreshRate {
Ana Krulecb43429d2019-01-09 14:28:51 -080043 // This config ID corresponds to the position of the config in the vector that is stored
44 // on the device.
45 int configId;
46 // Human readable name of the refresh rate.
47 std::string name;
Alec Mourifb571ea2019-01-24 18:42:10 -080048 // Refresh rate in frames per second, rounded to the nearest integer.
49 uint32_t fps = 0;
Ana Krulecb43429d2019-01-09 14:28:51 -080050 };
51
52 // TODO(b/122916473): Get this information from configs prepared by vendors, instead of
53 // baking them in.
54 explicit RefreshRateConfigs(
55 const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
Ana Krulec4593b692019-01-11 22:07:25 -080056 init(configs);
Ana Krulecb43429d2019-01-09 14:28:51 -080057 }
58 ~RefreshRateConfigs() = default;
59
Ady Abrahamde3b67b2019-03-25 16:38:10 -070060 const std::map<RefreshRateType, std::shared_ptr<RefreshRate>>& getRefreshRates() {
Ady Abraham1902d072019-03-01 17:18:59 -080061 return mRefreshRates;
62 }
Alec Mouri0a1cc962019-03-14 12:33:02 -070063 std::shared_ptr<RefreshRate> getRefreshRate(RefreshRateType type) {
64 const auto& refreshRate = mRefreshRates.find(type);
65 if (refreshRate != mRefreshRates.end()) {
66 return refreshRate->second;
67 }
68 return nullptr;
69 }
Ana Krulecb43429d2019-01-09 14:28:51 -080070
71private:
Ana Krulec4593b692019-01-11 22:07:25 -080072 void init(const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
73 // This is the rate that HWC encapsulates right now when the device is in DOZE mode.
Ady Abraham1902d072019-03-01 17:18:59 -080074 mRefreshRates.emplace(RefreshRateType::POWER_SAVING,
Alec Mouri0a1cc962019-03-14 12:33:02 -070075 std::make_shared<RefreshRate>(
76 RefreshRate{SCREEN_OFF_CONFIG_ID, "ScreenOff", 0}));
Ana Krulec4593b692019-01-11 22:07:25 -080077
78 if (configs.size() < 1) {
79 ALOGE("Device does not have valid configs. Config size is 0.");
80 return;
81 }
82
83 // Create a map between config index and vsync period. This is all the info we need
84 // from the configs.
85 std::vector<std::pair<int, nsecs_t>> configIdToVsyncPeriod;
86 for (int i = 0; i < configs.size(); ++i) {
87 configIdToVsyncPeriod.emplace_back(i, configs.at(i)->getVsyncPeriod());
88 }
89
90 std::sort(configIdToVsyncPeriod.begin(), configIdToVsyncPeriod.end(),
91 [](const std::pair<int, nsecs_t>& a, const std::pair<int, nsecs_t>& b) {
92 return a.second > b.second;
93 });
94
95 // When the configs are ordered by the resync rate. We assume that the first one is DEFAULT.
96 nsecs_t vsyncPeriod = configIdToVsyncPeriod[0].second;
97 if (vsyncPeriod != 0) {
98 const float fps = 1e9 / vsyncPeriod;
Ady Abraham1902d072019-03-01 17:18:59 -080099 mRefreshRates.emplace(RefreshRateType::DEFAULT,
Alec Mouri0a1cc962019-03-14 12:33:02 -0700100 std::make_shared<RefreshRate>(
101 RefreshRate{configIdToVsyncPeriod[0].first,
102 base::StringPrintf("%2.ffps", fps),
103 static_cast<uint32_t>(fps)}));
Ana Krulec4593b692019-01-11 22:07:25 -0800104 }
Alec Mourifb571ea2019-01-24 18:42:10 -0800105
Ana Krulec4593b692019-01-11 22:07:25 -0800106 if (configs.size() < 2) {
107 return;
108 }
109
110 // When the configs are ordered by the resync rate. We assume that the second one is
111 // PERFORMANCE, eg. the higher rate.
112 vsyncPeriod = configIdToVsyncPeriod[1].second;
113 if (vsyncPeriod != 0) {
114 const float fps = 1e9 / vsyncPeriod;
Ady Abraham1902d072019-03-01 17:18:59 -0800115 mRefreshRates.emplace(RefreshRateType::PERFORMANCE,
Alec Mouri0a1cc962019-03-14 12:33:02 -0700116 std::make_shared<RefreshRate>(
117 RefreshRate{configIdToVsyncPeriod[1].first,
118 base::StringPrintf("%2.ffps", fps),
119 static_cast<uint32_t>(fps)}));
Ana Krulec4593b692019-01-11 22:07:25 -0800120 }
121 }
122
Ady Abrahamde3b67b2019-03-25 16:38:10 -0700123 std::map<RefreshRateType, std::shared_ptr<RefreshRate>> mRefreshRates;
Ana Krulecb43429d2019-01-09 14:28:51 -0800124};
125
126} // namespace scheduler
Alec Mourifb571ea2019-01-24 18:42:10 -0800127} // namespace android