cam_utils.h File Reference

Utility functions for the ETSI ITS CAM (EN and TS) More...

#include <etsi_its_msgs_utils/impl/checks.h>
#include <etsi_its_msgs_utils/impl/constants.h>

Go to the source code of this file.

Functions
TimestampIts	getTimestampITSFromGenerationDeltaTime (const GenerationDeltaTime &generation_delta_time, const TimestampIts &timestamp_estimate)
	Get the TimestampITS from a given GenerationDeltaTime object.
uint64_t	getUnixNanosecondsFromGenerationDeltaTime (const GenerationDeltaTime &generation_delta_time, const TimestampIts &timestamp_estimate, const uint16_t n_leap_seconds=etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin() ->second)
	Get the Unix-Nanoseconds from a given GenerationDeltaTime object.
uint64_t	getUnixNanosecondsFromGenerationDeltaTime (const GenerationDeltaTime &generation_delta_time, const uint64_t unix_timestamp_estimate, const uint16_t n_leap_seconds=etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin() ->second)
	Get the Unix Nanoseconds from Generation Delta Time object.

Detailed Description

Utility functions for the ETSI ITS CAM (EN and TS)

Definition in file cam_utils.h.

Function Documentation

getTimestampITSFromGenerationDeltaTime()

TimestampIts getTimestampITSFromGenerationDeltaTime ( const GenerationDeltaTime & generation_delta_time, const TimestampIts & timestamp_estimate )

inline

Get the TimestampITS from a given GenerationDeltaTime object.

Parameters

generation_delta_time	the GenerationDeltaTime object to get the TimestampITS from
timestamp_estimate	estimated time to calculate the corresponding generation from

Returns

TimestampIts the corresponding TimestampITS object

Definition at line 45 of file cam_utils.h.

                                                                                                   {
  TimestampIts t_its;
  t_its.value = std::floor(timestamp_estimate.value / 65536) * 65536 + generation_delta_time.value;
  throwIfOutOfRange(t_its.value, TimestampIts::MIN, TimestampIts::MAX, "TimestampIts");
  return t_its;
}

getUnixNanosecondsFromGenerationDeltaTime() [1/2]

uint64_t getUnixNanosecondsFromGenerationDeltaTime ( const GenerationDeltaTime & generation_delta_time, const TimestampIts & timestamp_estimate, const uint16_t n_leap_seconds = etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin()->second )

inline

Get the Unix-Nanoseconds from a given GenerationDeltaTime object.

Parameters

generation_delta_time	the GenerationDeltaTime object to get the Unix-Nanoseconds from
timestamp_estimate	estimated time to calculate the corresponding generation from
n_leap_seconds	number of leap-seconds since 2004. (Defaults to the todays number of leap seconds since 2004.)

Returns

uint64_t the corresponding Unix-Nanoseconds

Definition at line 61 of file cam_utils.h.

                                                                                                     {
  TimestampIts t_its = getTimestampITSFromGenerationDeltaTime(generation_delta_time, timestamp_estimate);
  return t_its.value * 1e6 + etsi_its_msgs::UNIX_SECONDS_2004 * 1e9 - n_leap_seconds * 1e9;
}

getUnixNanosecondsFromGenerationDeltaTime() [2/2]

uint64_t getUnixNanosecondsFromGenerationDeltaTime ( const GenerationDeltaTime & generation_delta_time, const uint64_t unix_timestamp_estimate, const uint16_t n_leap_seconds = etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin()->second )

inline

Get the Unix Nanoseconds from Generation Delta Time object.

Parameters

generation_delta_time	the GenerationDeltaTime object to get the Unix-Nanoseconds from
unix_timestamp_estimate	estimated unix-time (in Nanoseconds) to calculate the corresponding generation from
n_leap_seconds	number of leap-seconds since 2004. (Defaults to the todays number of leap seconds since 2004.)

Returns

uint64_t the corresponding Unix-Nanoseconds

Definition at line 76 of file cam_utils.h.

                                                                                                     {
  TimestampIts t_its;
  setTimestampITS(t_its, unix_timestamp_estimate, n_leap_seconds);
  return getUnixNanosecondsFromGenerationDeltaTime(generation_delta_time, t_its, n_leap_seconds);
}