1f12d93300
- Add app icon - prevend android device from shutting down cpu while playing music - fix scaling bug - fix energy saver for RasPi by reconnecting to music player - minor refactorings and renaming
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
#ifndef ENERGYSAVER_H
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#define ENERGYSAVER_H
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#include <QObject>
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#include <QTimer>
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#ifdef ANDROID
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#include <qandroidjniobject.h>
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#endif
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/**
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* @brief Class handling energy saving options.
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*
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* On Android devices, it locks the cpu shutdown while active. On other devices, it
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* will shut down device on timeout if the options are set accordingly and a shutdown script
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* is provided.
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*
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* In the context of the LenaPi application, it will prevent cpu shutdown on android devices while playing
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* music. On other devices, it will shutdown the device if no music has been playing and no mouse input was
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* detected for a certain time intervall.
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*/
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class EnergySaver : public QObject
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{
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Q_OBJECT
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protected:
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using QObject::QObject;
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public:
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~EnergySaver();
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/**
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* @brief Create instance if necessary. The instance will have auto shutdown disabeld.
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*
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* Used to prevent sleep on android devices.
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*/
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static void init();
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/**
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* @brief Create instance if necessary, configure it and start timer.
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* @param enabledAutoShutdown Defines whether device will shutdown on inactivity using shutdownScript
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* @param interval Timer interval in seconds
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* @param shutdownScript Path to shutdown script file
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* @see EnergySaver::instance
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*
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* Instance is initialized with timeout interval and shutdown script
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* and started if the provided script exists.
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*/
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static void init(int interval, const QString& shutdownScript);
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/**
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* @brief Implements the singleton pattern.
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* @return Instance of EnergySaver
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*
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* If no instance has been created yet, create new instance.
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*/
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static EnergySaver *instance();
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public slots:
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/**
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* @brief Deactivate energy saver, e.g., as music is currently playing
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*
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* Sets locks on adroid devics and stops shutdown-timer.
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*/
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void deactivate();
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/**
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* @brief Active energy saver
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*
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* Releases locks on android devices and restarts shutdown-timer if shutdown option is set.
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*/
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void activate();
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/**
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* @brief Restart shutdown timer, e.g. because of music player activity
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*/
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void restartTimer();
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private:
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/**
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* @brief Initialize and connect timer.
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* @param interval Timeout interval in millisecond.
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*/
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void initTimer(int interval);
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void setShutdownScript(const QString& shutdownScript);
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/**
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* @brief Initializes locking or Android devices
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*/
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void initAdroidLocks();
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/**
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* @brief Sets locks on Android devices to prevent sleep.
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*
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* Used to prevent cpu sleep as otherwise music will stop.
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*/
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void setAndroidLock();
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/**
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* @brief Releases locks on Android devices to allow the device's cpu to go into sleep mode.
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*/
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void releaseAndroidLock();
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QTimer mTimer;
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QString mShutdownScript;
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bool mIsActive{false};
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bool mIsAutoShutDownEnabled{false};
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#ifdef ANDROID
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/**
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* @brief Prevent energy saving for Android devices
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*/
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QAndroidJniObject m_wakeLock;
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#endif
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private slots:
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/**
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* @brief Behavior on timeout: shut down RaspberryPi.
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*/
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void onTimeout();
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};
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#endif // ENERGYSAVER_H
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