ground/gcs/src/libs/utils/logfile.h

   1 #ifndef LOGFILE_H
   2 #define LOGFILE_H
   3
   4 #include <QIODevice>
   5 #include <QTime>
   6 #include <QTimer>
   7 #include <QMutexLocker>
   8 #include <QDebug>
   9 #include <QBuffer>
  10 #include <QFile>
  11 #include "utils_global.h"
  12
  13 class QTCREATOR_UTILS_EXPORT LogFile : public QIODevice {
  14     Q_OBJECT
  15 public:
  16     explicit LogFile(QObject *parent = 0);
  17     qint64 bytesAvailable() const;
  18     qint64 bytesToWrite() const
  19     {
  20         return m_file.bytesToWrite();
  21     };
  22     bool open(OpenMode mode);
  23     void setFileName(QString name)
  24     {
  25         m_file.setFileName(name);
  26     };
  27     void close();
  28     qint64 writeData(const char *data, qint64 dataSize);
  29     qint64 readData(char *data, qint64 maxlen);
  30
  31     bool startReplay();
  32     bool stopReplay();
  33     void useProvidedTimeStamp(bool useProvidedTimeStamp)
  34     {
  35         m_useProvidedTimeStamp = useProvidedTimeStamp;
  36     }
  37
  38     void setNextTimeStamp(quint32 nextTimestamp)
  39     {
  40         m_nextTimeStamp = nextTimestamp;
  41     }
  42
  43 public slots:
  44     void setReplaySpeed(double val)
  45     {
  46         m_playbackSpeed = val;
  47         qDebug() << "Playback speed is now" << m_playbackSpeed;
  48     };
  49     void pauseReplay();
  50     void resumeReplay();
  51
  52 protected slots:
  53     void timerFired();
  54
  55 signals:
  56     void readReady();
  57     void replayStarted();
  58     void replayFinished();
  59
  60 protected:
  61     QByteArray m_dataBuffer;
  62     QTimer m_timer;
  63     QTime m_myTime;
  64     QFile m_file;
  65     qint32 m_lastTimeStamp;
  66     qint32 m_lastPlayed;
  67     QMutex m_mutex;
  68
  69
  70     int m_timeOffset;
  71     double m_playbackSpeed;
  72
  73 private:
  74     quint32 m_nextTimeStamp;
  75     bool m_useProvidedTimeStamp;
  76 };
  77
  78 #endif // LOGFILE_H