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 19 #include <mutex> 20 21 #include "EventThread.h" 22 23 namespace android { 24 25 /** 26 * VSync signals used during SurfaceFlinger trace playback (traces we captured 27 * with SurfaceInterceptor). 28 */ 29 class InjectVSyncSource final : public VSyncSource { 30 public: 31 ~InjectVSyncSource() override = default; 32 33 void setCallback(VSyncSource::Callback* callback) override { 34 std::lock_guard<std::mutex> lock(mCallbackMutex); 35 mCallback = callback; 36 } 37 38 void onInjectSyncEvent(nsecs_t when) { 39 std::lock_guard<std::mutex> lock(mCallbackMutex); 40 if (mCallback) { 41 mCallback->onVSyncEvent(when); 42 } 43 } 44 45 void setVSyncEnabled(bool) override {} 46 void setPhaseOffset(nsecs_t) override {} 47 void pauseVsyncCallback(bool) {} 48 49 private: 50 std::mutex mCallbackMutex; 51 VSyncSource::Callback* mCallback GUARDED_BY(mCallbackMutex) = nullptr; 52 }; 53 54 } // namespace android
