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/*
* Copyright 2021 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.
*/
#undef LOG_TAG
#define LOG_TAG "FpsReporter"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <algorithm>
#include "FpsReporter.h"
#include "Layer.h"
#include "SurfaceFlinger.h"
namespace android {
FpsReporter::FpsReporter(frametimeline::FrameTimeline& frameTimeline, SurfaceFlinger& flinger,
std::unique_ptr<Clock> clock)
: mFrameTimeline(frameTimeline), mFlinger(flinger), mClock(std::move(clock)) {
LOG_ALWAYS_FATAL_IF(mClock == nullptr, "Passed in null clock when constructing FpsReporter!");
}
void FpsReporter::dispatchLayerFps() {
const auto now = mClock->now();
if (now - mLastDispatch < kMinDispatchDuration) {
return;
}
std::vector<TrackedListener> localListeners;
{
std::scoped_lock lock(mMutex);
if (mListeners.empty()) {
return;
}
std::transform(mListeners.begin(), mListeners.end(), std::back_inserter(localListeners),
[](const std::pair<wp<IBinder>, TrackedListener>& entry) {
return entry.second;
});
}
std::unordered_set<int32_t> seenTasks;
std::vector<std::pair<TrackedListener, sp<Layer>>> listenersAndLayersToReport;
mFlinger.mCurrentState.traverse([&](Layer* layer) {
auto& currentState = layer->getDrawingState();
if (currentState.metadata.has(METADATA_TASK_ID)) {
int32_t taskId = currentState.metadata.getInt32(METADATA_TASK_ID, 0);
if (seenTasks.count(taskId) == 0) {
// localListeners is expected to be tiny
for (TrackedListener& listener : localListeners) {
if (listener.taskId == taskId) {
seenTasks.insert(taskId);
listenersAndLayersToReport.push_back({listener, sp<Layer>(layer)});
break;
}
}
}
}
});
for (const auto& [listener, layer] : listenersAndLayersToReport) {
std::unordered_set<int32_t> layerIds;
layer->traverse(LayerVector::StateSet::Current,
[&](Layer* layer) { layerIds.insert(layer->getSequence()); });
listener.listener->onFpsReported(mFrameTimeline.computeFps(layerIds));
}
mLastDispatch = now;
}
void FpsReporter::binderDied(const wp<IBinder>& who) {
std::scoped_lock lock(mMutex);
mListeners.erase(who);
}
void FpsReporter::addListener(const sp<gui::IFpsListener>& listener, int32_t taskId) {
sp<IBinder> asBinder = IInterface::asBinder(listener);
asBinder->linkToDeath(this);
std::lock_guard lock(mMutex);
mListeners.emplace(wp<IBinder>(asBinder), TrackedListener{listener, taskId});
}
void FpsReporter::removeListener(const sp<gui::IFpsListener>& listener) {
std::lock_guard lock(mMutex);
mListeners.erase(wp<IBinder>(IInterface::asBinder(listener)));
}
} // namespace android
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