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80 lines
2.6 KiB
80 lines
2.6 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/IHdrLayerInfoListener.h>
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#include <binder/IBinder.h>
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#include <unordered_map>
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namespace android {
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class HdrLayerInfoReporter final : public IBinder::DeathRecipient {
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public:
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struct HdrLayerInfo {
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int32_t numberOfHdrLayers = 0;
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int32_t maxW = 0;
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int32_t maxH = 0;
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int32_t flags = 0;
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bool operator==(const HdrLayerInfo& other) const {
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return numberOfHdrLayers == other.numberOfHdrLayers && maxW == other.maxW &&
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maxH == other.maxH && flags == other.flags;
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}
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bool operator!=(const HdrLayerInfo& other) const { return !(*this == other); }
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};
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HdrLayerInfoReporter() = default;
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~HdrLayerInfoReporter() final = default;
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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 dispatchHdrLayerInfo(const HdrLayerInfo& info) EXCLUDES(mMutex);
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// Override for IBinder::DeathRecipient
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void binderDied(const wp<IBinder>&) override EXCLUDES(mMutex);
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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::IHdrLayerInfoListener>& listener) EXCLUDES(mMutex);
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// Deregisters an Fps listener
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void removeListener(const sp<gui::IHdrLayerInfoListener>& listener) EXCLUDES(mMutex);
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bool hasListeners() const EXCLUDES(mMutex) {
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std::scoped_lock lock(mMutex);
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return !mListeners.empty();
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}
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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::IHdrLayerInfoListener> listener;
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HdrLayerInfo lastInfo;
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};
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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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