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73 lines
2.4 KiB
73 lines
2.4 KiB
/*
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* Copyright 2021 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 <android-base/thread_annotations.h>
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#include <android/gui/IFpsListener.h>
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#include <binder/IBinder.h>
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#include <unordered_map>
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#include "Clock.h"
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#include "FrameTimeline/FrameTimeline.h"
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namespace android {
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class Layer;
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class SurfaceFlinger;
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class FpsReporter : public IBinder::DeathRecipient {
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public:
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FpsReporter(frametimeline::FrameTimeline& frameTimeline, SurfaceFlinger& flinger,
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std::unique_ptr<Clock> clock = std::make_unique<SteadyClock>());
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// Dispatches updated layer fps values for the registered listeners
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// This method promotes Layer weak pointers and performs layer stack traversals, so mStateLock
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// must be held when calling this method.
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void dispatchLayerFps() EXCLUDES(mMutex);
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// Override for IBinder::DeathRecipient
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void binderDied(const wp<IBinder>&) override;
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// Registers an Fps listener that listens to fps updates for the provided layer
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void addListener(const sp<gui::IFpsListener>& listener, int32_t taskId);
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// Deregisters an Fps listener
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void removeListener(const sp<gui::IFpsListener>& listener);
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private:
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mutable std::mutex mMutex;
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struct WpHash {
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size_t operator()(const wp<IBinder>& p) const {
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return std::hash<IBinder*>()(p.unsafe_get());
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}
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};
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struct TrackedListener {
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sp<gui::IFpsListener> listener;
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int32_t taskId;
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};
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frametimeline::FrameTimeline& mFrameTimeline;
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SurfaceFlinger& mFlinger;
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static const constexpr std::chrono::steady_clock::duration kMinDispatchDuration =
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std::chrono::milliseconds(500);
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std::unique_ptr<Clock> mClock;
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std::chrono::steady_clock::time_point mLastDispatch;
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std::unordered_map<wp<IBinder>, TrackedListener, WpHash> mListeners GUARDED_BY(mMutex);
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};
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} // namespace android
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