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FiffId

Namespace: FIFFLIB  ·  Library: FIFF Library

#include <fiff/fiff_id.h>

class FIFFLIB::FiffId

128-bit FIFF identifier: hardware machine ID plus creation time, stamped on every file and block.

On-disk layout is a 20-byte record (version + 2x4-byte machine ID + 8-byte FiffTime). The machid is filled from the host MAC address by FiffStream::write_id when generating new identifiers, matching the Neuromag acquisition stack so file lineage stays reconstructible.

Public Methods​

FiffId()​

Default Constructor.

FiffId(p_FiffId)​

Copy constructor.

Parameters:

  • p_FiffId : const FiffId & Universially unique identifier which should be copied.

~FiffId()​

Destroys the universially unique identifier.

clear()​

Resets the File identifier.

print()​

Prints the id.

isEmpty()​

True if FIFF id is empty.

Returns:

  • bool — true if FIFF id is empty.

toMachidString()​

Returns the machine ID as a human-readable string.

Returns:

  • QString — The machine ID formatted as a string.

toString()​

Returns a human-readable string representation of this ID.

Format: "major.minor 0xMACHID1MACHID2 timestamp"

Returns:

  • QString — Formatted string describing the ID.

Static Methods​

new_file_id()​

Constructs a (hopefully) unique file id.

Returns:

get_machid(fixed_id)​

Returns the machine ID consisting of a two integer number.

Parameters:

  • fixed_id : *int ** Pointer to an array of at least 2 ints to receive the machine ID.

Returns:

  • bool — true if succeeded, false otherwise.

getDefault()​

Returns a default FiffId object to be used as a mutable placeholder for a default instance of the class.

Returns:

storageSize()​

Size of the old struct (fiffIdRec) 5int = 54 = 20.

Returns:

  • qint32 — the size of the old struct fiffIdRec.

Authors of this file​