/usr/share/rapid-photo-downloader/rapid/metadataphoto.py is in rapid-photo-downloader 0.4.10-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- coding: latin1 -*-
### Copyright (C) 2007-2012 Damon Lynch <damonlynch@gmail.com>
### This program is free software; you can redistribute it and/or modify
### it under the terms of the GNU General Public License as published by
### the Free Software Foundation; either version 2 of the License, or
### (at your option) any later version.
### This program is distributed in the hope that it will be useful,
### but WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
### GNU General Public License for more details.
### You should have received a copy of the GNU General Public License
### along with this program; if not, write to the Free Software
### Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
### USA
import re
import datetime
import sys
import config
import types
import time
try:
import pyexiv2
except ImportError:
sys.stderr.write("You need to install pyexiv2, the python binding for exiv2, to run this program.\n" )
sys.exit(1)
import metadataexiftool
def __version_info(version):
if not version:
return ''
else:
v = ''
for i in version:
v += '.%s' % i
return v[1:]
def pyexiv2_version_info():
return __version_info(pyexiv2.version_info)
def exiv2_version_info():
return __version_info(pyexiv2.exiv2_version_info)
class MetaData(pyexiv2.metadata.ImageMetadata):
"""
Class providing human readable access to image metadata
"""
def __init__(self, full_file_name):
pyexiv2.metadata.ImageMetadata.__init__(self, full_file_name)
self.rpd_metadata_exiftool = None
self.rpd_full_file_name = full_file_name
def _load_exiftool(self):
if self.rpd_metadata_exiftool is None:
self.rpd_metadata_exiftool = metadataexiftool.ExifToolMetaData(self.rpd_full_file_name)
def aperture(self, missing=''):
"""
Returns in string format the floating point value of the image's aperture.
Returns missing if the metadata value is not present.
"""
try:
a = self["Exif.Photo.FNumber"].value
a = float(a.numerator) / float(a.denominator)
return "%.1f" % a
except:
return missing
def iso(self, missing=''):
"""
Returns in string format the integer value of the image's ISO.
Returns missing if the metadata value is not present.
"""
try:
return self["Exif.Photo.ISOSpeedRatings"].human_value
except:
return missing
def exposure_time(self, alternativeFormat=False, missing=''):
"""
Returns in string format the exposure time of the image.
Returns missing if the metadata value is not present.
alternativeFormat is useful if the value is going to be used in a
purpose where / is an invalid character, e.g. file system names.
alternativeFormat is False:
For exposures less than one second, the result is formatted as a
fraction e.g. 1/125
For exposures greater than or equal to one second, the value is
formatted as an integer e.g. 30
alternativeFormat is True:
For exposures less than one second, the result is formatted as an
integer e.g. 125
For exposures less than one second but more than or equal to
one tenth of a second, the result is formatted as an integer
e.g. 3 representing 3/10 of a second
For exposures greater than or equal to one second, the value is
formatted as an integer with a trailing s e.g. 30s
"""
try:
e = self["Exif.Photo.ExposureTime"].value
e0 = int(e.numerator)
e1 = int(e.denominator)
if e1 > e0:
if alternativeFormat:
if e0 == 1:
return str(e1)
else:
return str(e0)
else:
return "%s/%s" % (e0,e1)
elif e0 > e1:
e = float(e0) / e1
if alternativeFormat:
return "%.0fs" % e
else:
return "%.0f" % e
else:
return "1s"
except:
return missing
def focal_length(self, missing=''):
"""
Returns in string format the focal length of the lens used to record the image.
Returns missing if the metadata value is not present.
"""
try:
f = self["Exif.Photo.FocalLength"].value
f0 = float(f.numerator)
f1 = float(f.denominator)
return "%.0f" % (f0 / f1)
except:
return missing
def camera_make(self, missing=''):
"""
Returns in string format the camera make (manufacturer) used to record the image.
Returns missing if the metadata value is not present.
"""
try:
return self["Exif.Image.Make"].value.strip()
except:
return missing
def camera_model(self, missing=''):
"""
Returns in string format the camera model used to record the image.
Returns missing if the metadata value is not present.
"""
try:
return self["Exif.Image.Model"].value.strip()
except:
return missing
def camera_serial(self, missing=''):
try:
keys = self.exif_keys
if 'Exif.Canon.SerialNumber' in keys:
v = self['Exif.Canon.SerialNumber'].raw_value
elif 'Exif.Nikon3.SerialNumber' in keys:
v = self['Exif.Nikon3.SerialNumber'].raw_value
elif 'Exif.OlympusEq.SerialNumber' in keys:
v = self['Exif.OlympusEq.SerialNumber'].raw_value
elif 'Exif.Olympus.SerialNumber' in keys:
v = self['Exif.Olympus.SerialNumber'].raw_value
elif 'Exif.Olympus.SerialNumber2' in keys:
v = self['Exif.Olympus.SerialNumber2'].raw_value
elif 'Exif.Panasonic.SerialNumber' in keys:
v = self['Exif.Panasonic.SerialNumber'].raw_value
elif 'Exif.Fujifilm.SerialNumber' in keys:
v = self['Exif.Fujifilm.SerialNumber'].raw_value
elif 'Exif.Image.CameraSerialNumber' in keys:
v = self['Exif.Image.CameraSerialNumber'].raw_value
else:
return missing
v = str(v) # probably not necessary, but just in case
return v.strip()
except:
return missing
def shutter_count(self, missing=''):
try:
keys = self.exif_keys
if 'Exif.Nikon3.ShutterCount' in keys:
v = self['Exif.Nikon3.ShutterCount'].raw_value
elif 'Exif.Canon.FileNumber' in keys:
v = self['Exif.Canon.FileNumber'].raw_value
elif 'Exif.Canon.ImageNumber' in keys:
v = self['Exif.Canon.ImageNumber'].raw_value
else:
return missing
return str(v)
except:
return missing
def file_number(self, missing=''):
"""returns Exif.CanonFi.FileNumber, not to be confused with
Exif.Canon.FileNumber"""
try:
if 'Exif.CanonFi.FileNumber' in self.exif_keys:
self._load_exiftool()
return self.rpd_metadata_exiftool.file_number(missing)
else:
return missing
except:
return missing
def owner_name(self, missing=''):
""" returns camera name recorded by select Canon cameras"""
try:
return self['Exif.Canon.OwnerName'].value.strip()
except:
return missing
def copyright(self, missing=''):
"""returns copyright exif information"""
try:
return self['Exif.Image.Copyright'].value.strip()
except:
return missing
def artist(self, missing=''):
"""returns exif artis information"""
try:
return self['Exif.Image.Artist'].value.strip()
except:
return missing
def short_camera_model(self, includeCharacters = '', missing=''):
"""
Returns in shorterned string format the camera model used to record the image.
Returns missing if the metadata value is not present.
The short format is determined by the first occurrence of a digit in the
camera model, including all alphaNumeric characters before and after
that digit up till a non-alphanumeric character, but with these interventions:
1. Canon "Mark" designations are shortened prior to conversion.
2. Names like "Canon EOS DIGITAL REBEL XSi" do not have a number and must
and treated differently (see below)
Examples:
Canon EOS 300D DIGITAL -> 300D
Canon EOS 5D -> 5D
Canon EOS 5D Mark II -> 5DMkII
NIKON D2X -> D2X
NIKON D70 -> D70
X100,D540Z,C310Z -> X100
Canon EOS DIGITAL REBEL XSi -> XSi
Canon EOS Digital Rebel XS -> XS
Canon EOS Digital Rebel XTi -> XTi
Canon EOS Kiss Digital X -> Digital
Canon EOS Digital Rebel XT -> XT
EOS Kiss Digital -> Digital
Canon Digital IXUS Wireless -> Wireless
Canon Digital IXUS i zoom -> zoom
Canon EOS Kiss Digital N -> N
Canon Digital IXUS IIs -> IIs
IXY Digital L -> L
Digital IXUS i -> i
IXY Digital -> Digital
Digital IXUS -> IXUS
The optional includeCharacters allows additional characters to appear
before and after the digits.
Note: special includeCharacters MUST be escaped as per syntax of a
regular expressions (see documentation for module re)
Examples:
includeCharacters = '':
DSC-P92 -> P92
includeCharacters = '\-':
DSC-P92 -> DSC-P92
If a digit is not found in the camera model, the last word is returned.
Note: assume exif values are in ENGLISH, regardless of current platform
"""
m = self.camera_model()
m = m.replace(' Mark ', 'Mk')
if m:
s = r"(?:[^a-zA-Z0-9%s]?)(?P<model>[a-zA-Z0-9%s]*\d+[a-zA-Z0-9%s]*)"\
% (includeCharacters, includeCharacters, includeCharacters)
r = re.search(s, m)
if r:
return r.group("model")
else:
head, space, model = m.strip().rpartition(' ')
return model
else:
return missing
def date_time(self, missing=''):
"""
Returns in python datetime format the date and time the image was
recorded.
Trys to get value from exif key "Exif.Photo.DateTimeOriginal".
If that does not exist, trys key "Exif.Image.DateTime"
Returns missing either metadata value is not present.
"""
try:
if "Exif.Photo.DateTimeOriginal" in self.exif_keys:
v = self["Exif.Photo.DateTimeOriginal"].value
else:
v = self["Exif.Image.DateTime"].value
return v
except:
return missing
def time_stamp(self, missing=''):
dt = self.date_time(missing=None)
if not dt is None:
try:
t = dt.timetuple()
ts = time.mktime(t)
except:
ts = missing
else:
ts = missing
return ts
def sub_seconds(self, missing='00'):
""" returns the subsecond the image was taken, as recorded by the camera"""
try:
return str(self["Exif.Photo.SubSecTimeOriginal"].value)
except:
return missing
def orientation(self, missing=''):
"""
Returns the orientation of the image, as recorded by the camera
Return type int
"""
try:
v = self['Exif.Image.Orientation'].value
if isinstance(v, types.StringType):
v = int(v)
return v
except:
return missing
class DummyMetaData(MetaData):
"""
Class which gives metadata values for an imaginary image.
Useful for displaying in preference examples etc. when no image is ready to
be downloaded.
See MetaData class for documentation of class methods.
"""
def __init__(self):
pass
def readMetadata(self):
pass
def aperture(self, missing=''):
return "2.0"
def iso(self, missing=''):
return "100"
def exposure_time(self, alternativeFormat=False, missing=''):
if alternativeFormat:
return "4000"
else:
return "1/4000"
def focal_length(self, missing=''):
return "135"
def camera_make(self, missing=''):
return "Canon"
def camera_model(self, missing=''):
return "Canon EOS 5D"
def short_camera_model(self, includeCharacters = '', missing=''):
return "5D"
def camera_serial(self, missing=''):
return '730402168'
def shutter_count(self, missing=''):
return '387'
def owner_name(self, missing=''):
return 'Photographer Name'
def date_time(self, missing=''):
return datetime.datetime.now()
def subSeconds(self, missing='00'):
return '57'
def orientation(self, missing=''):
return 1
if __name__ == '__main__':
import sys
if (len(sys.argv) != 2):
print 'Usage: ' + sys.argv[0] + ' path/to/photo/containing/metadata'
m = DummyMetaData()
else:
m = MetaData(sys.argv[1])
m.read()
print "f"+ m.aperture('missing ')
print "ISO " + m.iso('missing ')
print m.exposure_time(missing='missing ') + " sec"
print m.exposure_time(alternativeFormat=True, missing='missing ')
print m.focal_length('missing ') + "mm"
print m.camera_make()
print m.camera_model()
print m.short_camera_model()
print m.short_camera_model(includeCharacters = "\-")
print m.date_time()
print m.orientation()
print 'Serial number:', m.camera_serial()
print 'Shutter count:', m.shutter_count()
print 'Subseconds:', m.sub_seconds()
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