AlarmControlImpl.h

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#ifndef CARMA_ALARMCONTROLIMPL_H
#define CARMA_ALARMCONTROLIMPL_H

#include <carma/monitor/AlarmSubsystem.h>

#include <carma/util/AutoPthreadQuitAndJoinGroup.h>
#include <carma/util/PthreadMutex.h>

namespace carma {
namespace alarm {

class AudioControlThread2;

class AlarmControlImpl
{
        public:

                // Constructor
                AlarmControlImpl(AudioControlThread2 &control);

                // Destructor
                virtual ~AlarmControlImpl();

                // Using the Tie template mechanism requires these methods to be public
                void turnOn(const char *alarmName,
                                        const char *mp,
                                        const char *reason,
                                        bool repeat);

                void turnOff();
                void updateDeadMan();
                void enableAlarm(bool enable);

                static void monitorThreadEP(AlarmControlImpl &This);

        private:

                // Separate the task of maintaining and updating state variables from
                // physically turning alarm on and off (these do the latter).
                void soundTheAlarm(const std::string &alarmName, bool repeat);
                void silenceTheAlarm();

                // Group together state information so we know what needs mutex protected
                struct AlarmState {
                        carma::util::PthreadMutex mutex;
                        bool enable;
                        bool repeat;
                        time_t deadManSec;
                        double alarmTime;
                        bool on;
                        std::string mp;
                        std::string reason;
                        std::string alarmName;
                };

                ::carma::monitor::AlarmSubsystem monitor_;
                struct AlarmState state_;

                // Threads
                carma::util::AutoPthreadQuitAndJoinGroup threadGroup_;

                // Audio Control
                AudioControlThread2 &control_;

}; // End class AlarmControlImpl

} // namespace alarm
} // namespace carma

#endif // CARMA_ALARMCONTROLIMPL_H

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