TruxtonChildFileIO newexif

This create new EXIF record from a file in Truxton. It automatically associates the parent file and media identifiers used in the [EXIF] table.

Syntax

object newexif();

Return value

An EXIF object

Sample

import truxton
import shutil
from datetime import datetime
from calendar import timegm
from pathlib import Path

EPOCH_AS_FILETIME = 116444736000000000
HUNDREDS_OF_NANOSECONDS = 10000000

def date_to_filetime(dt):
  return EPOCH_AS_FILETIME + (timegm(dt.timetuple()) * HUNDREDS_OF_NANOSECONDS)

def add_file(parent_truxton_file, filename):
  source_file = open(filename, "rb")
  child = parent_truxton_file.newchild()
  child.name = Path(filename).name
  shutil.copyfileobj(source_file, child)
  source_file.close()
  child.save()
  return child

def main():
  t = truxton.create()
  file = t.getfileid("5ec2a123-74d6-5da7-0653-4e6800000000")

  child = add_file(file, "C:/photos/helper.jpg")

  exif = child.newexif()

  exif.gpstime = date_to_filetime(datetime.utcnow())
  exif.devicetime = date_to_filetime(datetime.utcnow())
  exif.shuttercount = 42
  exif.make = "Sony"
  exif.model = "BFG-9000"
  exif.bodyserialnumber = "TX010188-PY"
  exif.latitude = 39.038287
  exif.longitude = -77.304136
  exif.altitude = 100
  exif.heading = 300
  exif.focallength = 28.2

  if exif.save() is True:
    print( "New EXIF saved as id " + exif.id)

if __name__ == "__main__":
  sys.exit(main())