PerformanceManager.h

//
//  PerformanceManager.h
//  interface/src/
//
//  Created by Sam Gateau on 2019-05-29.
//  Copyright 2019 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
 
#ifndef hifi_PerformanceManager_h
#define hifi_PerformanceManager_h
 
#include <string>
 
#include <SettingHandle.h>
#include <shared/ReadWriteLockable.h>
 
class PerformanceManager {
public:
    enum PerformancePreset {
        UNKNOWN = 0, // Matching the platform Tier profiles enumeration for coherence
        LOW_POWER,
        LOW,
        MID,
        HIGH,
        CUSTOM,
        PROFILE_COUNT
    };
    static bool isValidPerformancePreset(int value) { return (value >= PerformancePreset::UNKNOWN && value <= PerformancePreset::CUSTOM); }
 
    PerformanceManager();
    ~PerformanceManager() = default;
 
    // Setup the PerformanceManager which will enforce the several settings to match the Preset
    // If evaluatePlatformTier is true, the Preset is evaluated from the Platform::Profiler::profilePlatform()
    void setupPerformancePresetSettings(bool evaluatePlatformTier);
 
    void setPerformancePreset(PerformancePreset performancePreset);
    PerformancePreset getPerformancePreset() const;
 
private:
    mutable ReadWriteLockable _performancePresetSettingLock;
    Setting::Handle<int> _performancePresetSetting { "performancePreset", PerformanceManager::PerformancePreset::UNKNOWN };
 
    // The concrete performance preset changes
    void applyPerformancePreset(PerformanceManager::PerformancePreset performancePreset);
};
 
#endif