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gh-29 Refactor Media module by moving methods to Photo module

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This commit is contained in:
Jaisen Mathai 2015-12-10 23:11:52 -08:00
parent 300c9c794d
commit 19f40c0b56
1 changed files with 4 additions and 45 deletions
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49
elodie/media/media.py
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@ -10,20 +10,19 @@ from elodie import constants
from fractions import Fraction
from sys import argv
import LatLon
import mimetypes
import os
import pyexiv2
import re
import subprocess
import time
import imghdr
"""
Media class for general video operations
"""
class Media(object):
# class / static variable accessible through get_valid_extensions()
__name__ = 'Media'
video_extensions = ('avi','m4v','mov','mp4','3gp')
photo_extensions = ('jpg', 'jpeg', 'nef', 'dng', 'gif')
@ -83,52 +82,12 @@ class Media(object):
return self.source
"""
Check the file extension against valid file extensions as returned by get_valid_extensions()
@returns, boolean
Define is_valid to always return false.
This should be overridden in a child class.
"""
def is_valid(self):
source = self.source
return False
# gh-4 This checks if the source file is an image.
# It doesn't validate against the list of supported types.
if(self.__name__ == 'Photo' and imghdr.what(source) is None):
return False;
# we can't use self.__get_extension else we'll endlessly recurse
return os.path.splitext(source)[1][1:].lower() in self.get_valid_extensions()
"""
Get latitude or longitude of photo from EXIF
@returns, float or None if not present in EXIF or a non-photo file
"""
def get_coordinate(self, type='latitude'):
if(not self.is_valid()):
return None
key = self.exif_map['longitude'] if type == 'longitude' else self.exif_map['latitude']
exif = self.get_exif()
if(key not in exif):
return None
try:
# this is a hack to get the proper direction by negating the values for S and W
latdir = 1
if(key == self.exif_map['latitude'] and str(exif[self.exif_map['latitude_ref']].value) == 'S'):
latdir = -1
londir = 1
if(key == self.exif_map['longitude'] and str(exif[self.exif_map['longitude_ref']].value) == 'W'):
londir = -1
coords = exif[key].value
if(key == 'latitude'):
return float(str(LatLon.Latitude(degree=coords[0], minute=coords[1], second=coords[2]))) * latdir
else:
return float(str(LatLon.Longitude(degree=coords[0], minute=coords[1], second=coords[2]))) * londir
except KeyError:
return None
"""
Get the date which the photo was taken.