Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 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 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 19 | #include <cinttypes> |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 20 | #include <mutex> |
| 21 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 22 | #include "Scheduler.h" |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 23 | |
| 24 | namespace android { |
| 25 | |
| 26 | /* |
| 27 | * Modulates the vsync-offsets depending on current SurfaceFlinger state. |
| 28 | */ |
| 29 | class VSyncModulator { |
Jorim Jaggi | 9053521 | 2018-05-23 23:44:06 +0200 | [diff] [blame] | 30 | private: |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 31 | // Number of frames we'll keep the early phase offsets once they are activated for a |
| 32 | // transaction. This acts as a low-pass filter in case the client isn't quick enough in |
| 33 | // sending new transactions. |
| 34 | const int MIN_EARLY_FRAME_COUNT_TRANSACTION = 2; |
Jorim Jaggi | 9053521 | 2018-05-23 23:44:06 +0200 | [diff] [blame] | 35 | |
Alec Mouri | 5a10210 | 2019-05-23 07:14:20 -0700 | [diff] [blame] | 36 | // Number of frames we'll keep the early gl phase offsets once they are activated. |
| 37 | // This acts as a low-pass filter to avoid scenarios where we rapidly |
| 38 | // switch in and out of gl composition. |
| 39 | const int MIN_EARLY_GL_FRAME_COUNT_TRANSACTION = 2; |
| 40 | |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 41 | public: |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 42 | VSyncModulator(); |
| 43 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 44 | // Wrapper for a collection of surfaceflinger/app offsets for a particular |
| 45 | // configuration . |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 46 | struct Offsets { |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 47 | scheduler::RefreshRateConfigs::RefreshRateType fpsMode; |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 48 | nsecs_t sf; |
| 49 | nsecs_t app; |
| 50 | }; |
| 51 | |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 52 | enum class OffsetType { |
| 53 | Early, |
| 54 | EarlyGl, |
| 55 | Late, |
| 56 | }; |
| 57 | |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 58 | // Sets the phase offsets |
| 59 | // |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 60 | // sfEarly: The phase offset when waking up SF early, which happens when marking a transaction |
| 61 | // as early. May be the same as late, in which case we don't shift offsets. |
| 62 | // sfEarlyGl: Like sfEarly, but only if we used GL composition. If we use both GL composition |
| 63 | // and the transaction was marked as early, we'll use sfEarly. |
| 64 | // sfLate: The regular SF vsync phase offset. |
| 65 | // appEarly: Like sfEarly, but for the app-vsync |
| 66 | // appEarlyGl: Like sfEarlyGl, but for the app-vsync. |
| 67 | // appLate: The regular app vsync phase offset. |
Ady Abraham | 45e4e36 | 2019-06-07 18:20:51 -0700 | [diff] [blame] | 68 | void setPhaseOffsets(Offsets early, Offsets earlyGl, Offsets late, |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 69 | nsecs_t thresholdForNextVsync) EXCLUDES(mMutex); |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 70 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 71 | // Sets handles to the SF and app event threads. |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 72 | void setEventThreads(EventThread* sfEventThread, EventThread* appEventThread) { |
| 73 | mSfEventThread = sfEventThread; |
| 74 | mAppEventThread = appEventThread; |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 75 | } |
| 76 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 77 | // Sets the scheduler and vsync connection handlers. |
Ana Krulec | 12096d0 | 2018-09-07 14:54:14 -0700 | [diff] [blame] | 78 | void setSchedulerAndHandles(Scheduler* scheduler, |
| 79 | Scheduler::ConnectionHandle* appConnectionHandle, |
| 80 | Scheduler::ConnectionHandle* sfConnectionHandle) { |
| 81 | mScheduler = scheduler; |
| 82 | mAppConnectionHandle = appConnectionHandle; |
| 83 | mSfConnectionHandle = sfConnectionHandle; |
| 84 | } |
| 85 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 86 | // Signals that a transaction has started, and changes offsets accordingly. |
| 87 | void setTransactionStart(Scheduler::TransactionStart transactionStart); |
Jorim Jaggi | 9053521 | 2018-05-23 23:44:06 +0200 | [diff] [blame] | 88 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 89 | // Signals that a transaction has been completed, so that we can finish |
| 90 | // special handling for a transaction. |
| 91 | void onTransactionHandled(); |
Jorim Jaggi | f15c3be | 2018-04-12 12:56:58 +0100 | [diff] [blame] | 92 | |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 93 | // Called when we send a refresh rate change to hardware composer, so that |
| 94 | // we can move into early offsets. |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 95 | void onRefreshRateChangeInitiated(); |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 96 | |
| 97 | // Called when we detect from vsync signals that the refresh rate changed. |
| 98 | // This way we can move out of early offsets if no longer necessary. |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 99 | void onRefreshRateChangeCompleted(); |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 100 | |
Alec Mouri | b488afa | 2019-05-23 10:22:24 -0700 | [diff] [blame] | 101 | // Called when the display is presenting a new frame. usedRenderEngine |
| 102 | // should be set to true if RenderEngine was involved with composing the new |
| 103 | // frame. |
| 104 | void onRefreshed(bool usedRenderEngine); |
Alec Mouri | 5a10210 | 2019-05-23 07:14:20 -0700 | [diff] [blame] | 105 | |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 106 | // Returns the offsets that we are currently using |
| 107 | Offsets getOffsets() EXCLUDES(mMutex); |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame] | 108 | |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 109 | private: |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 110 | // Returns the next offsets that we should be using |
| 111 | Offsets getNextOffsets() REQUIRES(mMutex); |
| 112 | // Returns the next offset type that we should use. |
| 113 | OffsetType getNextOffsetType(); |
| 114 | // Updates offsets and persists them into the scheduler framework. |
| 115 | void updateOffsets() EXCLUDES(mMutex); |
| 116 | void updateOffsetsLocked() REQUIRES(mMutex); |
| 117 | // Updates the internal offset type. |
| 118 | void updateOffsetType() REQUIRES(mMutex); |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 119 | |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 120 | mutable std::mutex mMutex; |
| 121 | std::unordered_map<OffsetType, Offsets> mOffsetMap GUARDED_BY(mMutex); |
Ady Abraham | 45e4e36 | 2019-06-07 18:20:51 -0700 | [diff] [blame] | 122 | nsecs_t mThresholdForNextVsync; |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 123 | |
| 124 | EventThread* mSfEventThread = nullptr; |
| 125 | EventThread* mAppEventThread = nullptr; |
| 126 | |
Ana Krulec | 12096d0 | 2018-09-07 14:54:14 -0700 | [diff] [blame] | 127 | Scheduler* mScheduler = nullptr; |
| 128 | Scheduler::ConnectionHandle* mAppConnectionHandle = nullptr; |
| 129 | Scheduler::ConnectionHandle* mSfConnectionHandle = nullptr; |
| 130 | |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 131 | OffsetType mOffsetType GUARDED_BY(mMutex) = OffsetType::Late; |
Jorim Jaggi | 22ec38b | 2018-06-19 15:57:08 +0200 | [diff] [blame] | 132 | |
Ana Krulec | 7ecce8c | 2018-10-12 13:44:41 -0700 | [diff] [blame] | 133 | std::atomic<Scheduler::TransactionStart> mTransactionStart = |
| 134 | Scheduler::TransactionStart::NORMAL; |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 135 | std::atomic<bool> mRefreshRateChangePending = false; |
Jorim Jaggi | 9053521 | 2018-05-23 23:44:06 +0200 | [diff] [blame] | 136 | std::atomic<int> mRemainingEarlyFrameCount = 0; |
Alec Mouri | 5a10210 | 2019-05-23 07:14:20 -0700 | [diff] [blame] | 137 | std::atomic<int> mRemainingRenderEngineUsageCount = 0; |
Alec Mouri | d7599d8 | 2019-05-22 19:58:00 -0700 | [diff] [blame^] | 138 | |
| 139 | bool mTraceDetailedInfo = false; |
Dan Stoza | 2713c30 | 2018-03-28 17:07:36 -0700 | [diff] [blame] | 140 | }; |
| 141 | |
| 142 | } // namespace android |