/usr/share/tdiary/exifparser/makernote/olympus.rb is in tdiary-contrib 3.2.2-1.
This file is owned by root:root, with mode 0o644.
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# exif/makernote/olympus.rb -
#
# Copyright (C) Ryuichi Tamura (r-tam@fsinet.or.jp)
#
# $Revision: 1.1.1.1 $
# $Date: 2002/12/16 07:59:00 $
#
#== Reference
#
#http://www.ba.wakwak.com/%7Etsuruzoh/Computer/Digicams/exif-e.html
#
require 'exifparser/tag'
require 'exifparser/utils'
module Exif
#
# Tags used in Olympus Makernote
#
module Tag
module MakerNote
#
# 0x0200 - SpecialMode
#
class SpecialMode < Base
def processData
@formatted = []
partition_data(@count) do |data|
@formatted.push _formatData(data)
end
end
def to_s
buf = "Picture taking mode: "
case @formatted[0]
when 0
buf << 'Normal,'
when 1
buf << 'Unknown,'
when 2
buf << 'Fast,'
when 3
buf << 'Panorama,'
else
buf << 'Unknown,'
end
buf << " Sequence number: #{@formatted[1]},"
buf << " Panorama direction: "
case @formatted[2]
when 1
buf << 'left to right'
when 2
buf << 'right to left'
when 3
buf << 'bottom to top'
when 4
buf << 'top to bottom'
else
buf << 'unknown'
end
end
end
#
# 0x0201 - JpegQual
#
class JpegQual < Base
def to_s
case @formatted
when 1
"Standard Quality"
when 2
"High Quality"
when 3
"Super High Quality"
else
"Unknown"
end
end
end
#
# 0x0202 - Macro
#
class Macro < Base
def to_s
case @formatted
when 0
'Off'
when 1
'On'
else
'Unknown'
end
end
end
#
# 0x0203 - Unknown
#
#
# 0x0204 - DigiZoom
#
class DigiZoom < Base
end
#
# 0x0205 - Unknown
#
#
# 0x0206 - Unknown
#
#
# 0x0207 - SoftwareRelease
#
class SoftwareRelease < Base
end
#
# 0x0208 - PictInfo
#
class PictInfo < Base
end
#
# 0x0209 - CameraID
#
class CameraID < Base
end
#
# 0x0f00
#
class DataDump < Base
end
end
OlympusIFDTable = {
0x0200 => MakerNote::SpecialMode,
0x0201 => MakerNote::JpegQual,
0x0202 => MakerNote::Macro,
0x0203 => Unknown,
0x0204 => MakerNote::DigiZoom,
0x0205 => Unknown,
0x0206 => Unknown,
0x0207 => MakerNote::SoftwareRelease,
0x0208 => MakerNote::PictInfo,
0x0209 => MakerNote::CameraID,
0x0f00 => MakerNote::DataDump
}
end
class Olympus
def initialize(fin, tiff_origin, dataPos, byteOrder_module)
@fin = fin
@tiffHeader0 = tiff_origin
@dataPos = dataPos
@byteOrder_module = byteOrder_module
self.extend @byteOrder_module
end
def scan_IFD
#
# Olympus MakerNote starts from 8 byte from the origin.
#
@fin.pos = @dataPos + 8
#
# get the number of tags
#
num_dirs = decode_ushort(fin_read_n(2))
#
# now scan them
#
1.upto(num_dirs) {
curpos_tag = @fin.pos
tag = parseTagID(fin_read_n(2))
tagclass = Tag.find(tag.hex, Tag::OlympusIFDTable)
unit, formatter = Tag::Format::Unit[decode_ushort(fin_read_n(2))]
count = decode_ulong(fin_read_n(4))
tagdata = fin_read_n(4)
obj = tagclass.new(tag, "MakerNote", count)
obj.extend formatter, @byteOrder_module
obj.pos = curpos_tag
if unit * count > 4
curpos = @fin.pos
begin
@fin.pos = @tiffHeader0 + decode_ulong(tagdata)
obj.dataPos = @fin.pos
obj.data = fin_read_n(unit*count)
ensure
@fin.pos = curpos
end
else
obj.dataPos = @fin.pos - 4
obj.data = tagdata
end
obj.processData
yield obj
}
end
private
def fin_read_n(n)
@fin.read(n)
end
end
end
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