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Diffstat (limited to 'services/surfaceflinger/HdrLayerInfoReporter.h')
| -rw-r--r-- | services/surfaceflinger/HdrLayerInfoReporter.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/services/surfaceflinger/HdrLayerInfoReporter.h b/services/surfaceflinger/HdrLayerInfoReporter.h new file mode 100644 index 0000000000..671395f8de --- /dev/null +++ b/services/surfaceflinger/HdrLayerInfoReporter.h @@ -0,0 +1,80 @@ +/* + * 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. + */ + +#pragma once + +#include <android-base/thread_annotations.h> +#include <android/gui/IHdrLayerInfoListener.h> +#include <binder/IBinder.h> + +#include <unordered_map> + +namespace android { + +class HdrLayerInfoReporter final : public IBinder::DeathRecipient { +public: + struct HdrLayerInfo { + int32_t numberOfHdrLayers = 0; + int32_t maxW = 0; + int32_t maxH = 0; + int32_t flags = 0; + + bool operator==(const HdrLayerInfo& other) const { + return numberOfHdrLayers == other.numberOfHdrLayers && maxW == other.maxW && + maxH == other.maxH && flags == other.flags; + } + + bool operator!=(const HdrLayerInfo& other) const { return !(*this == other); } + }; + + HdrLayerInfoReporter() = default; + ~HdrLayerInfoReporter() final = default; + + // Dispatches updated layer fps values for the registered listeners + // This method promotes Layer weak pointers and performs layer stack traversals, so mStateLock + // must be held when calling this method. + void dispatchHdrLayerInfo(const HdrLayerInfo& info) EXCLUDES(mMutex); + + // Override for IBinder::DeathRecipient + void binderDied(const wp<IBinder>&) override EXCLUDES(mMutex); + + // Registers an Fps listener that listens to fps updates for the provided layer + void addListener(const sp<gui::IHdrLayerInfoListener>& listener) EXCLUDES(mMutex); + // Deregisters an Fps listener + void removeListener(const sp<gui::IHdrLayerInfoListener>& listener) EXCLUDES(mMutex); + + bool hasListeners() const EXCLUDES(mMutex) { + std::scoped_lock lock(mMutex); + return !mListeners.empty(); + } + +private: + mutable std::mutex mMutex; + struct WpHash { + size_t operator()(const wp<IBinder>& p) const { + return std::hash<IBinder*>()(p.unsafe_get()); + } + }; + + struct TrackedListener { + sp<gui::IHdrLayerInfoListener> listener; + HdrLayerInfo lastInfo; + }; + + std::unordered_map<wp<IBinder>, TrackedListener, WpHash> mListeners GUARDED_BY(mMutex); +}; + +} // namespace android
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