50 lines
1.7 KiB
C++
50 lines
1.7 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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#include "LayerInfo.h"
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#include <algorithm>
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#include <utility>
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namespace android::scheduler {
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LayerInfo::LayerInfo(float lowRefreshRate, float highRefreshRate)
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: mLowRefreshRate(lowRefreshRate), mHighRefreshRate(highRefreshRate) {}
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void LayerInfo::setLastPresentTime(nsecs_t lastPresentTime, nsecs_t now) {
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lastPresentTime = std::max(lastPresentTime, static_cast<nsecs_t>(0));
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// Buffers can come with a present time far in the future. That keeps them relevant.
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mLastUpdatedTime = std::max(lastPresentTime, now);
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mPresentTimeHistory.insertPresentTime(mLastUpdatedTime);
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if (mLastPresentTime == 0) {
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// First frame
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mLastPresentTime = lastPresentTime;
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return;
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}
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const nsecs_t period = lastPresentTime - mLastPresentTime;
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mLastPresentTime = lastPresentTime;
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// Ignore time diff that are too high - those are stale values
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if (period > MAX_ACTIVE_LAYER_PERIOD_NS.count()) return;
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const float fps = std::min(1e9f / period, mHighRefreshRate);
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mRefreshRateHistory.insertRefreshRate(fps);
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}
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} // namespace android::scheduler
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