Siarhei Vishniakou
b07fe1debb
This will allow NativeInputEventReceiver to subscribe to the frame metrics notifications directly from the native code, without having to involve java. Java would still be needed to register the observer, though. Bug: 376713684 Test: compile only, this infra is used in another CL Flag: EXEMPT refactor Change-Id: I7be8f0b2e94595f9a64ce69a22fe5910e0cd7711
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*
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* Copyright (C) 2016 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 <utils/Mutex.h>
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#include <utils/Log.h>
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#include <utils/RefBase.h>
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#include <ui/FatVector.h>
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#include "FrameInfo.h"
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#include "FrameMetricsObserver.h"
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#include <string.h>
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#include <mutex>
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namespace android {
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namespace uirenderer {
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class FrameMetricsReporter {
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public:
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FrameMetricsReporter() {}
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void addObserver(sp<FrameMetricsObserver>&& observer) {
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std::lock_guard lock(mObserversLock);
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mObservers.push_back(std::move(observer));
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}
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bool removeObserver(const sp<FrameMetricsObserver>& observer) {
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std::lock_guard lock(mObserversLock);
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for (size_t i = 0; i < mObservers.size(); i++) {
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if (mObservers[i].get() == observer) {
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mObservers.erase(mObservers.begin() + i);
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return true;
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}
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}
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return false;
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}
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bool hasObservers() {
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std::lock_guard lock(mObserversLock);
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return mObservers.size() > 0;
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}
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/**
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* Notify observers about the metrics contained in 'stats'.
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* If an observer is waiting for present time, notify when 'stats' has present time.
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*
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* If an observer does not want present time, only notify when 'hasPresentTime' is false.
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* Never notify both types of observers from the same callback, because the callback with
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* 'hasPresentTime' is sent at a different time than the one without.
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*
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* The 'frameNumber' and 'surfaceControlId' associated to the frame whose's stats are being
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* reported are used to determine whether or not the stats should be reported. We won't report
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* stats of frames that are from "old" surfaces (i.e. with surfaceControlIds older than the one
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* the observer was attached on) nor those that are from "old" frame numbers.
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*/
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void reportFrameMetrics(const FrameInfoBuffer& stats, bool hasPresentTime, uint64_t frameNumber,
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int32_t surfaceControlId);
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private:
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FatVector<sp<FrameMetricsObserver>, 10> mObservers GUARDED_BY(mObserversLock);
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std::mutex mObserversLock;
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};
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} // namespace uirenderer
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} // namespace android
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