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/*
* Copyright 2018 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 <atomic>
#include <unordered_set>
#include <utils/Mutex.h>
#include "../Scheduler/OneShotTimer.h"
#include "DisplayIdentification.h"
namespace android {
namespace Hwc2 {
class PowerAdvisor {
public:
virtual ~PowerAdvisor();
virtual void onBootFinished() = 0;
virtual void setExpensiveRenderingExpected(DisplayId displayId, bool expected) = 0;
virtual void notifyDisplayUpdateImminent() = 0;
};
namespace impl {
// PowerAdvisor is a wrapper around IPower HAL which takes into account the
// full state of the system when sending out power hints to things like the GPU.
class PowerAdvisor final : public Hwc2::PowerAdvisor {
public:
class HalWrapper {
public:
virtual ~HalWrapper() = default;
virtual bool setExpensiveRendering(bool enabled) = 0;
virtual bool notifyDisplayUpdateImminent() = 0;
};
PowerAdvisor();
~PowerAdvisor() override;
void onBootFinished() override;
void setExpensiveRenderingExpected(DisplayId displayId, bool expected) override;
void notifyDisplayUpdateImminent() override;
private:
HalWrapper* getPowerHal() REQUIRES(mPowerHalMutex);
bool mReconnectPowerHal GUARDED_BY(mPowerHalMutex) = false;
std::mutex mPowerHalMutex;
std::atomic_bool mBootFinished = false;
std::unordered_set<DisplayId> mExpensiveDisplays;
bool mNotifiedExpensiveRendering = false;
const bool mUseUpdateImminentTimer;
std::atomic_bool mSendUpdateImminent = true;
scheduler::OneShotTimer mUpdateImminentTimer;
};
} // namespace impl
} // namespace Hwc2
} // namespace android
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