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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.
*/
#pragma once
#include <android-base/thread_annotations.h>
#include <android/gui/ITunnelModeEnabledListener.h>
#include <binder/IBinder.h>
#include <unordered_map>
namespace android {
class Layer;
class SurfaceFlinger;
class TunnelModeEnabledReporter : public IBinder::DeathRecipient {
public:
TunnelModeEnabledReporter();
// Checks if there is a tunnel mode enabled state change and if so, dispatches the updated
// tunnel mode enabled/disabled state to the registered listeners
// This method performs layer stack traversals, so mStateLock must be held when calling this
// method.
void updateTunnelModeStatus();
// Dispatches tunnelModeEnabled to all registered listeners
void dispatchTunnelModeEnabled(bool tunnelModeEnabled);
// Override for IBinder::DeathRecipient
void binderDied(const wp<IBinder>&) override;
// Registers a TunnelModeEnabled listener
void addListener(const sp<gui::ITunnelModeEnabledListener>& listener);
// Deregisters a TunnelModeEnabled listener
void removeListener(const sp<gui::ITunnelModeEnabledListener>& listener);
inline void incrementTunnelModeCount() { mTunnelModeCount++; }
inline void decrementTunnelModeCount() { mTunnelModeCount--; }
private:
mutable std::mutex mMutex;
struct WpHash {
size_t operator()(const wp<IBinder>& p) const {
return std::hash<IBinder*>()(p.unsafe_get());
}
};
std::unordered_map<wp<IBinder>, sp<gui::ITunnelModeEnabledListener>, WpHash> mListeners
GUARDED_BY(mMutex);
bool mTunnelModeEnabled GUARDED_BY(mMutex) = false;
uint32_t mTunnelModeCount = 0;
};
} // namespace android
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