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/*
* Copyright (C) 2016 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 <utils/Mutex.h>
#include <utils/Log.h>
#include <utils/RefBase.h>
#include <ui/FatVector.h>
#include "FrameInfo.h"
#include "FrameMetricsObserver.h"
#include <string.h>
#include <mutex>
namespace android {
namespace uirenderer {
class FrameMetricsReporter {
public:
FrameMetricsReporter() {}
void addObserver(FrameMetricsObserver* observer) {
std::lock_guard lock(mObserversLock);
mObservers.push_back(observer);
}
bool removeObserver(FrameMetricsObserver* observer) {
std::lock_guard lock(mObserversLock);
for (size_t i = 0; i < mObservers.size(); i++) {
if (mObservers[i].get() == observer) {
mObservers.erase(mObservers.begin() + i);
return true;
}
}
return false;
}
bool hasObservers() {
std::lock_guard lock(mObserversLock);
return mObservers.size() > 0;
}
/**
* Notify observers about the metrics contained in 'stats'.
* If an observer is waiting for present time, notify when 'stats' has present time.
*
* If an observer does not want present time, only notify when 'hasPresentTime' is false.
* Never notify both types of observers from the same callback, because the callback with
* 'hasPresentTime' is sent at a different time than the one without.
*
* The 'frameNumber' and 'surfaceControlId' associated to the frame whose's stats are being
* reported are used to determine whether or not the stats should be reported. We won't report
* stats of frames that are from "old" surfaces (i.e. with surfaceControlIds older than the one
* the observer was attached on) nor those that are from "old" frame numbers.
*/
void reportFrameMetrics(const int64_t* stats, bool hasPresentTime, uint64_t frameNumber,
int32_t surfaceControlId);
private:
FatVector<sp<FrameMetricsObserver>, 10> mObservers GUARDED_BY(mObserversLock);
std::mutex mObserversLock;
};
} // namespace uirenderer
} // namespace android
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