int64_t clocktime_offset; //< clock offset for cutting the segments at regular clock time
int64_t clocktime_wrap_duration; //< wrapping duration considered for starting a new segment
int64_t last_val; ///< remember last time for wrap around detection
int64_t clocktime_offset; //< clock offset for cutting the segments at regular clock time
int64_t clocktime_wrap_duration; //< wrapping duration considered for starting a new segment
int64_t last_val; ///< remember last time for wrap around detection