| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <chrono> |
| #include <memory> |
| #include <mutex> |
| #include <list> |
| #include <vector> |
| |
| #include <EGL/egl.h> |
| #include <EGL/eglext.h> |
| |
| #include <jni.h> |
| |
| #include "swappy/swappy.h" |
| #include "swappy/swappy_extra.h" |
| |
| #include "Thread.h" |
| |
| namespace swappy { |
| |
| class ChoreographerFilter; |
| class ChoreographerThread; |
| class EGL; |
| class FrameStatistics; |
| |
| using EGLDisplay = void *; |
| using EGLSurface = void *; |
| |
| class Swappy { |
| private: |
| // Allows construction with std::unique_ptr from a static method, but disallows construction |
| // outside of the class since no one else can construct a ConstructorTag |
| struct ConstructorTag { |
| }; |
| public: |
| Swappy(JavaVM *vm, |
| std::chrono::nanoseconds refreshPeriod, |
| std::chrono::nanoseconds appOffset, |
| std::chrono::nanoseconds sfOffset, |
| ConstructorTag tag); |
| |
| static void init(JNIEnv *env, jobject jactivity); |
| |
| static void onChoreographer(int64_t frameTimeNanos); |
| |
| static bool swap(EGLDisplay display, EGLSurface surface); |
| |
| static void init(JavaVM *vm, |
| std::chrono::nanoseconds refreshPeriod, |
| std::chrono::nanoseconds appOffset, |
| std::chrono::nanoseconds sfOffset); |
| |
| // Pass callbacks for tracing within the swap function |
| static void addTracer(const SwappyTracer *tracer); |
| |
| static uint64_t getSwapIntervalNS(); |
| |
| static void setAutoSwapInterval(bool enabled); |
| |
| static void overrideAutoSwapInterval(uint64_t swap_ns); |
| |
| static void enableStats(bool enabled); |
| static void recordFrameStart(EGLDisplay display, EGLSurface surface); |
| static void getStats(Swappy_Stats *stats); |
| static void destroyInstance(); |
| |
| private: |
| static Swappy *getInstance(); |
| |
| EGL *getEgl(); |
| |
| bool swapInternal(EGLDisplay display, EGLSurface surface); |
| |
| void addTracerCallbacks(SwappyTracer tracer); |
| |
| void preSwapBuffersCallbacks(); |
| void postSwapBuffersCallbacks(); |
| void preWaitCallbacks(); |
| void postWaitCallbacks(); |
| void startFrameCallbacks(); |
| void swapIntervalChangedCallbacks(); |
| |
| void onSettingsChanged(); |
| |
| void handleChoreographer(); |
| std::chrono::nanoseconds wakeClient(); |
| |
| void startFrame(); |
| |
| void waitUntil(int32_t frameNumber); |
| |
| void waitOneFrame(); |
| |
| // Waits for the next frame, considering both Choreographer and the prior frame's completion |
| bool waitForNextFrame(EGLDisplay display); |
| |
| // Destroys the previous sync fence (if any) and creates a new one for this frame |
| void resetSyncFence(EGLDisplay display); |
| |
| // Computes the desired presentation time based on the swap interval and sets it |
| // using eglPresentationTimeANDROID |
| bool setPresentationTime(EGLDisplay display, EGLSurface surface); |
| |
| void updateSwapDuration(std::chrono::nanoseconds duration); |
| |
| void recordFrameTime(int frames); |
| |
| bool updateSwapInterval(); |
| |
| int32_t nanoToSwapInterval(std::chrono::nanoseconds); |
| |
| std::atomic<std::chrono::nanoseconds> mSwapDuration = std::chrono::nanoseconds(0); |
| |
| static std::mutex sInstanceMutex; |
| static std::unique_ptr<Swappy> sInstance; |
| |
| std::atomic<int32_t> mSwapInterval = 0; |
| std::atomic<int32_t> mAutoSwapInterval = 0; |
| int mAutoSwapIntervalThreshold = 0; |
| |
| std::mutex mWaitingMutex; |
| std::condition_variable mWaitingCondition; |
| std::chrono::steady_clock::time_point mCurrentFrameTimestamp = std::chrono::steady_clock::now(); |
| int32_t mCurrentFrame = 0; |
| |
| std::mutex mEglMutex; |
| std::shared_ptr<EGL> mEgl; |
| |
| int32_t mTargetFrame = 0; |
| std::chrono::steady_clock::time_point mPresentationTime = std::chrono::steady_clock::now(); |
| |
| const std::chrono::nanoseconds mRefreshPeriod; |
| std::unique_ptr<ChoreographerFilter> mChoreographerFilter; |
| |
| bool mUsingExternalChoreographer = false; |
| std::unique_ptr<ChoreographerThread> mChoreographerThread; |
| |
| template <typename ...T> |
| using Tracer = std::function<void (T...)>; |
| |
| struct SwappyTracerCallbacks { |
| std::list<Tracer<>> preWait; |
| std::list<Tracer<>> postWait; |
| std::list<Tracer<>> preSwapBuffers; |
| std::list<Tracer<long>> postSwapBuffers; |
| std::list<Tracer<int32_t, long>> startFrame; |
| std::list<Tracer<>> swapIntervalChanged; |
| }; |
| |
| SwappyTracerCallbacks mInjectedTracers; |
| |
| std::mutex mFrameDurationsMutex; |
| std::vector<int> mFrameDurations GUARDED_BY(mFrameDurationsMutex); |
| int mFrameDurationsSum GUARDED_BY(mFrameDurationsMutex) = 0; |
| int mFrameDurationSamples GUARDED_BY(mFrameDurationsMutex); |
| bool mAutoSwapIntervalEnabled GUARDED_BY(mFrameDurationsMutex) = true; |
| static constexpr float FRAME_AVERAGE_HYSTERESIS = 0.1; |
| std::chrono::steady_clock::time_point mSwapTime; |
| std::unique_ptr<FrameStatistics> mFrameStatistics; |
| }; |
| |
| } //namespace swappy |