Class: FileData::Exif

Inherits:
Object
  • Object
show all
Defined in:
lib/file_data/formats/exif/exif.rb

Overview

Convenience class for extracting exif data from a file or stream

Class Method Summary collapse

Class Method Details

.creation_date(input) ⇒ Object 



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# File 'lib/file_data/formats/exif/exif.rb', line 35

def self.creation_date(input)
  raw_tag = FileData::Exif.only_image_tag(input, [34_665, 36_867])
  Time.strptime(raw_tag, '%Y:%m:%d %H:%M:%S') unless raw_tag.nil?
end

.delegate_to_exif_reader(input, name, other_args) ⇒ Object 



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# File 'lib/file_data/formats/exif/exif.rb', line 20

def self.delegate_to_exif_reader(input, name, other_args)
  streamify(input) do |stream|
    exif = ExifJpeg.new(stream).exif
    ExifReader.new(exif).send(name, *other_args)
  end
end

.origin_date(input) ⇒ Object 



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# File 'lib/file_data/formats/exif/exif.rb', line 40

def self.origin_date(input)
  creation_date(input)
end

.streamify(input) ⇒ Object 



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# File 'lib/file_data/formats/exif/exif.rb', line 27

def self.streamify(input)
  if input.is_a?(String)
    ::File.open(input, 'rb') { |f| yield f }
  else
    yield input
  end
end