Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 1 | /* |
| 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 <cinttypes> |
| 20 | |
| 21 | #include "RefreshRateConfigs.h" |
| 22 | #include "VSyncModulator.h" |
| 23 | |
| 24 | namespace android { |
| 25 | namespace scheduler { |
| 26 | |
| 27 | /* |
| 28 | * This class encapsulates offsets for different refresh rates. Depending |
| 29 | * on what refresh rate we are using, and wheter we are composing in GL, |
| 30 | * different offsets will help us with latency. This class keeps track of |
| 31 | * which mode the device is on, and returns approprate offsets when needed. |
| 32 | */ |
| 33 | class PhaseOffsets { |
| 34 | public: |
| 35 | struct Offsets { |
| 36 | VSyncModulator::Offsets early; |
| 37 | VSyncModulator::Offsets earlyGl; |
| 38 | VSyncModulator::Offsets late; |
| 39 | }; |
| 40 | |
| 41 | virtual ~PhaseOffsets(); |
| 42 | |
| 43 | virtual nsecs_t getCurrentAppOffset() = 0; |
| 44 | virtual nsecs_t getCurrentSfOffset() = 0; |
Ady Abraham | 796beb0 | 2019-04-11 15:23:07 -0700 | [diff] [blame] | 45 | virtual Offsets getOffsetsForRefreshRate( |
| 46 | RefreshRateConfigs::RefreshRateType refreshRateType) const = 0; |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 47 | virtual Offsets getCurrentOffsets() const = 0; |
| 48 | virtual void setRefreshRateType(RefreshRateConfigs::RefreshRateType refreshRateType) = 0; |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame^] | 49 | virtual nsecs_t getOffsetThresholdForNextVsync() const = 0; |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 50 | virtual void dump(std::string& result) const = 0; |
| 51 | }; |
| 52 | |
| 53 | namespace impl { |
| 54 | class PhaseOffsets : public scheduler::PhaseOffsets { |
| 55 | public: |
| 56 | PhaseOffsets(); |
| 57 | |
| 58 | nsecs_t getCurrentAppOffset() override; |
| 59 | nsecs_t getCurrentSfOffset() override; |
| 60 | |
Ady Abraham | 796beb0 | 2019-04-11 15:23:07 -0700 | [diff] [blame] | 61 | // Returns early, early GL, and late offsets for Apps and SF for a given refresh rate. |
| 62 | Offsets getOffsetsForRefreshRate( |
| 63 | RefreshRateConfigs::RefreshRateType refreshRateType) const override; |
| 64 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 65 | // Returns early, early GL, and late offsets for Apps and SF. |
Ady Abraham | 796beb0 | 2019-04-11 15:23:07 -0700 | [diff] [blame] | 66 | Offsets getCurrentOffsets() const override { |
| 67 | return getOffsetsForRefreshRate(mRefreshRateType); |
| 68 | } |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 69 | |
| 70 | // This function should be called when the device is switching between different |
| 71 | // refresh rates, to properly update the offsets. |
| 72 | void setRefreshRateType(RefreshRateConfigs::RefreshRateType refreshRateType) override { |
| 73 | mRefreshRateType = refreshRateType; |
| 74 | } |
| 75 | |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame^] | 76 | nsecs_t getOffsetThresholdForNextVsync() const override { return mOffsetThresholdForNextVsync; } |
| 77 | |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 78 | // Returns current offsets in human friendly format. |
| 79 | void dump(std::string& result) const override; |
| 80 | |
| 81 | private: |
Alec Mouri | 754c98a | 2019-03-18 18:53:42 -0700 | [diff] [blame] | 82 | Offsets getDefaultRefreshRateOffsets() { return mDefaultRefreshRateOffsets; } |
| 83 | Offsets getHighRefreshRateOffsets() { return mHighRefreshRateOffsets; } |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 84 | |
| 85 | std::atomic<RefreshRateConfigs::RefreshRateType> mRefreshRateType = |
| 86 | RefreshRateConfigs::RefreshRateType::DEFAULT; |
| 87 | |
| 88 | Offsets mDefaultRefreshRateOffsets; |
| 89 | Offsets mHighRefreshRateOffsets; |
Ady Abraham | be0f948 | 2019-04-24 15:41:53 -0700 | [diff] [blame^] | 90 | nsecs_t mOffsetThresholdForNextVsync; |
Ana Krulec | 757f63a | 2019-01-25 10:46:18 -0800 | [diff] [blame] | 91 | }; |
| 92 | } // namespace impl |
| 93 | |
| 94 | } // namespace scheduler |
| 95 | } // namespace android |