Sha256: 1c6ea17842729db21c03d2525d6bdcc9a2de43094554e475168f9dcbe0c3488a
Contents?: true
Size: 757 Bytes
Versions: 7
Compression:
Stored size: 757 Bytes
Contents
module FileData
# Contains the ability to enumerate through the exif tags in an ifd
module TagEnumerator
TAG_RECORD_SIZE = 12
def tags_enum
Enumerator.new do |e|
read_num_tags.times do
tag_start_pos = stream.pos
e.yield stream.read_value(2)
stream.seek(tag_start_pos + TAG_RECORD_SIZE)
end
end.lazy
end
def read_num_tags
stream.read_value(2)
end
def tags_size(num_tags)
num_tags * TAG_RECORD_SIZE
end
end
# Represents the tags present in any ifd (ordinal or extra)
class Ifd
include TagEnumerator
attr_accessor :stream
def initialize(exif_stream)
@stream = exif_stream
end
def tags
tags_enum
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems