71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <swappy/swappy_common.h>
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#include <atomic>
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#include <chrono>
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#include <mutex>
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#include "Thread.h"
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using namespace std::chrono_literals;
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namespace swappy {
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/* FrameTimings is defined so that EGL & vulkan can convert their timestamps
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* into this common struct. Within the common frame statistics, this is all the
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* information that is needed.
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*/
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typedef struct {
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uint64_t startFrameTime;
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uint64_t desiredPresentTime;
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uint64_t actualPresentTime;
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uint64_t presentMargin;
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} FrameTimings;
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class FrameStatistics {
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public:
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~FrameStatistics() = default;
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void enableStats(bool enabled);
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void updateFrameStats(FrameTimings currentFrameTimings,
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uint64_t refreshPeriod);
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SwappyStats getStats();
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void clearStats();
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void invalidateLastFrame();
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int32_t lastLatencyRecorded() { return mLastLatency; }
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private:
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static constexpr std::chrono::nanoseconds LOG_EVERY_N_NS = 1s;
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void logFrames() REQUIRES(mMutex);
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int32_t getFrameDelta(int64_t deltaTimeNS, uint64_t refreshPeriod);
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std::mutex mMutex;
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SwappyStats mStats GUARDED_BY(mMutex) = {};
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std::atomic<int32_t> mLastLatency = {0};
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FrameTimings mLast;
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// A flag to enable or disable frame stats histogram update.
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bool mFullStatsEnabled = false;
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};
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} // namespace swappy
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