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 #include "LayerInfo.h" 18 19 #include <cinttypes> 20 #include <cstdint> 21 #include <numeric> 22 #include <string> 23 24 namespace android { 25 namespace scheduler { 26 27 LayerInfo::LayerInfo(const std::string name, float maxRefreshRate) 28 : mName(name), 29 mMinRefreshDuration(1e9f / maxRefreshRate), 30 mRefreshRateHistory(mMinRefreshDuration) {} 31 32 LayerInfo::~LayerInfo() = default; 33 34 void LayerInfo::setLastPresentTime(nsecs_t lastPresentTime) { 35 std::lock_guard lock(mLock); 36 37 // Buffers can come with a present time far in the future. That keeps them relevant. 38 mLastUpdatedTime = std::max(lastPresentTime, systemTime()); 39 mPresentTimeHistory.insertPresentTime(mLastUpdatedTime); 40 41 const nsecs_t timeDiff = lastPresentTime - mLastPresentTime; 42 mLastPresentTime = lastPresentTime; 43 // Ignore time diff that are too high - those are stale values 44 if (timeDiff > TIME_EPSILON_NS.count()) return; 45 const nsecs_t refreshDuration = (timeDiff > 0) ? timeDiff : mMinRefreshDuration; 46 mRefreshRateHistory.insertRefreshRate(refreshDuration); 47 } 48 49 } // namespace scheduler 50 } // namespace android 51
