def metadata(self):
"""Returns image metadata associated with this submission"""
if getattr(self, "_image_meta", None) is None:
from EXIF import process_file
from cStringIO import StringIO
f = StringIO("".join([c for c in self.image.chunks()]))
self._image_meta = process_file(f)
return self._image_meta
def extract_exif(filename):
"""
Returns EXIF tags found in file at ``filename``
"""
try:
with file(filename) as image:
return process_file(image, details=False)
except IOError:
raise BadMediaFail(_('Could not read the image file.'))
def extract_exif(filename):
"""
Returns EXIF tags found in file at ``filename``
"""
try:
with file(filename) as image:
return process_file(image, details=False)
except IOError:
raise BadMediaFail(_('Could not read the image file.'))
def set_exif(self):
data = process_file(self.image, details = True, debug = False )
if not data:
return False
# See if the date the image was taken is available
if data.has_key('Image DateTime'):
datetime = data['Image DateTime']
self.date_taken = datetime.values.replace(':','-',2)
# See if GPS data is available and if so convert to decimal for Google Map
self. longitude, self.latitude = get_GPS(data)
# Check orientation
if data.has_key( 'Image Orientation' ):
orient = data['Image Orientation']
if orient.printable:
return orient.__str__()
return 0
def clean(self):
"""{'image': <InMemoryUploadedFile: Photo 04-08-2011 19 51 15.jpeg
(image/jpeg)>, 'lon': None, 'taxon': <Taxon: Family: Fallopia>,
'datetime': u"[u'', u'']", 'lat': None, 'contactable': True,
'get_coords_from_photo': True, 'get_datetime_from_photo': True,
'email': u'*****@*****.**'}"""
c_data = self.cleaned_data
if c_data.get('contactable', False) and \
not c_data.get('email', ''):
msg = "Please add email address if you want to be contacted!"
self._errors["email"] = self.error_class([msg])
del c_data['email']
exif = None
try:
f = c_data['image'].file
f.seek(0)
exif = process_file(f)
except Exception, e:
import logging
logging.error(e)
exif = None
def __init__(self, path):
fd = open(path, "rb")
self.tags = process_file(fd, details=False)
# print self.tags
self.path = path
