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Add local timestamp record to qfit.cpp #4146

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Merged
cagnulein merged 1 commit into from
Jan 13, 2026
+19 −0
Merged

Add local timestamp record to qfit.cpp #4146

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19 changes: 19 additions & 0 deletions src/qfit.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
#include "fit_field_description_mesg.hpp"
#include "fit_developer_field.hpp"
#include "fit_mesg_broadcaster.hpp"
#include "fit_timestamp_correlation_mesg.hpp"

#ifdef _WIN32
#include <io.h>
Expand Down Expand Up @@ -459,6 +460,24 @@ void qfit::save(const QString &filename, QList<SessionLine> session, BLUETOOTH_T
encode.Write(heatStrainIndexFieldDesc);
encode.Write(deviceInfoMesg);

// Add Timestamp Correlation record
// This correlates the UTC timestamp with the system timestamp and local timestamp
fit::TimestampCorrelationMesg timestampCorrelationMesg;
FIT_DATE_TIME sessionStartTimestamp = session.at(firstRealIndex).time.toSecsSinceEpoch() - 631065600L;

// Timestamp: UTC timestamp at session start
timestampCorrelationMesg.SetTimestamp(sessionStartTimestamp);

// System Timestamp: Same as timestamp (session start)
timestampCorrelationMesg.SetSystemTimestamp(sessionStartTimestamp);

// Local Timestamp: User's local time at session start
// Convert the local time to FIT format
fit::DateTime localDateTime((time_t)session.at(firstRealIndex).time.toSecsSinceEpoch());
timestampCorrelationMesg.SetLocalTimestamp(localDateTime.GetTimeStamp());

encode.Write(timestampCorrelationMesg);

if (workoutName.length() > 0) {
fit::TrainingFileMesg trainingFile;
trainingFile.SetTimestamp(sessionMesg.GetTimestamp());
Expand Down
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