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shared-libraries/ScStwLibraries/headers/scstwsoundplayer.h

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#ifndef SCSTWSTARTSOUNDPLAYER_H
#define SCSTWSTARTSOUNDPLAYER_H
#include <QObject>
#include <QFile>
#include <QAudioOutput>
#include <QDebug>
#include <QEventLoop>
#include <QTimer>
#include <QDateTime>
/*!
* \brief The ScStwSoundPlayer class is used for ultra low latency sound playback of the speed clibing start tones and commands
*/
class ScStwSoundPlayer : public QObject
{
Q_OBJECT
public:
/*!
* \brief ScStwSoundPlayer constructor
* \param parent
*/
explicit ScStwSoundPlayer(QObject *parent = nullptr);
private:
/*!
* \brief A map containing all sound files
* 0: AtYourMarksSound
* 1: ReadySound
* 2: StartSound
*/
QMap<int, QFile*> soundFiles;
/*!
* \brief Containng the false start sound file
*/
QFile *falseStartSoundFile;
/*!
* \brief The audio output object
*/
QAudioOutput *audioOutput;
/*!
* \brief The QEventLoop used to wait for the sound to finish
*/
QEventLoop *waitLoop;
/*!
* \brief The QTimer to wait for the sound to finish
*/
QTimer *waitTimer;
/*!
* \brief The action that is currently played
*/
int currentlyPlayingAction;
public slots:
/*!
* \brief Function to begin playing the sound of a certain state
* \param action The action to play (0: AtYourMarks, 1:Ready, 2:Start)
* \param volume The volume to play at
* \param timeOfStop The time the playback actually started (msecs since epoch)
* \return true if the playback was successfully started, false otherwise
*/
bool play(int action, double volume, double *timeOfStart = nullptr);
/*!
* \brief Function to wait for the playback to finish
* \param timeOfStop the point in time when the plyback actually stopped (msecs since epoch)
* \return false if there was any error (eg. there was no playback currently), true otherwise
*/
bool waitForSoundFinish(double *timeOfStop = nullptr);
/*!
* \brief Function to cancel the current playback
*
* Note that this function will automatically play the false start tone if the currently playing action is 2
*
* \param volume the volume to play the false start sound at
* \return true if the playback was successfully stopped, false otherwise
*/
bool cancel(double volume = 0);
private slots:
/*!
* \brief Handle a state change of the audio output
* \param newState the new state of the audio output
*/
void handleStateChanged(QAudio::State newState);
signals:
/*!
* \brief Emitted whenever a playback started
*/
void playbackStarted();
};
#endif // SCSTWSTARTSOUNDPLAYER_H