Refactor code to use pyexiv2 for photos and videos and move methods out to Media class

elodie/filesystem.py

@@ -99,13 +99,15 @@ class FileSystem:
     @param, time_obj, time, Time object to be used to determine folder name.
     @returns, string
     """
-    def get_folder_path(self, **kwargs):
+    def get_folder_path(self, metadata):
         path = []
-        if('date' in kwargs):
+        if(metadata['date_taken'] is not None):
-            path.append(time.strftime('%Y-%m-%b', kwargs['date']))
+            path.append(time.strftime('%Y-%m-%b', metadata['date_taken']))
 
-        if('latitude' in kwargs and 'longitude' in kwargs):
+        if(metadata['album'] is not None):
-            place_name = geolocation.place_name(kwargs['latitude'], kwargs['longitude'])
+            path.append(metadata['album'])
+        elif(metadata['latitude'] is not None and metadata['longitude'] is not None):
+            place_name = geolocation.place_name(metadata['latitude'], metadata['longitude'])
             if(place_name is None):
                 path.append('Unknown Location')
             else:
@@ -124,7 +126,7 @@ class FileSystem:
 
         metadata = media.get_metadata()
 
-        directory_name = self.get_folder_path(date=metadata['date_taken'], latitude=metadata['latitude'], longitude=metadata['longitude'])
+        directory_name = self.get_folder_path(metadata)
 
         dest_directory = '%s/%s' % (destination, directory_name)
         file_name = self.get_file_name(media)

elodie/media/media.py

@@ -5,8 +5,11 @@ Media package that handles all video operations
 
 # load modules
 from sys import argv
+from fractions import Fraction
+import LatLon
 import mimetypes
 import os
+import pyexiv2
 import re
 import subprocess
 import time
@@ -20,6 +23,28 @@ class Media(object):
     """
     def __init__(self, source=None):
         self.source = source
+        self.exif_map = {
+            'date_taken': ['Exif.Photo.DateTimeOriginal', 'Exif.Image.DateTime'], #, 'EXIF FileDateTime'],
+            'latitude': 'Exif.GPSInfo.GPSLatitude',
+            'latitude_ref': 'Exif.GPSInfo.GPSLatitudeRef',
+            'longitude': 'Exif.GPSInfo.GPSLongitude',
+            'longitude_ref': 'Exif.GPSInfo.GPSLongitudeRef',
+            'album': 'Xmp.elodie.album'
+        }
+        try:
+            pyexiv2.xmp.register_namespace('https://github.com/jmathai/elodie/', 'elodie')
+        except KeyError:
+            pass
+
+    def get_album(self):
+        if(not self.is_valid()):
+            return None
+
+        exif = self.get_exif()
+        try:
+            return exif[self.exif_map['album']].value
+        except KeyError:
+            return None
 
     """
     Get the full path to the video.
@@ -39,6 +64,88 @@ class Media(object):
         # 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.
+    The date value returned is defined by the min() of mtime and ctime.
+
+    @returns, time object or None for non-photo files or 0 timestamp
+    """
+    def get_date_taken(self):
+        if(not self.is_valid()):
+            return None
+
+        source = self.source
+        seconds_since_epoch = min(os.path.getmtime(source), os.path.getctime(source))
+        # We need to parse a string from EXIF into a timestamp.
+        # EXIF DateTimeOriginal and EXIF DateTime are both stored in %Y:%m:%d %H:%M:%S format
+        # we use date.strptime -> .timetuple -> time.mktime to do the conversion in the local timezone
+        # EXIF DateTime is already stored as a timestamp
+        # Sourced from https://github.com/photo/frontend/blob/master/src/libraries/models/Photo.php#L500
+        exif = self.get_exif()
+        for key in self.exif_map['date_taken']:
+            try:
+                if(key in exif):
+                    seconds_since_epoch = time.mktime(datetime.strptime(str(exif[key].value), '%Y:%m:%d %H:%M:%S').timetuple())
+                    break;
+            except:
+                pass
+
+        if(seconds_since_epoch == 0):
+            return None
+
+        return time.gmtime(seconds_since_epoch)
+
+    """
+    Read EXIF from a photo file.
+    We store the result in a member variable so we can call get_exif() often without performance degredation
+
+    @returns, list or none for a non-photo file
+    """
+    def get_exif(self):
+        if(not self.is_valid()):
+            return None
+        
+        if(self.exif is not None):
+            return self.exif
+
+        source = self.source
+        self.exif = pyexiv2.ImageMetadata(source)
+        self.exif.read()
+
+        return self.exif
+
     """
     Get the file extension as a lowercased string.
 
@@ -51,6 +158,30 @@ class Media(object):
         source = self.source
         return os.path.splitext(source)[1][1:].lower()
 
+    """
+    Get a dictionary of metadata for a photo.
+    All keys will be present and have a value of None if not obtained.
+
+    @returns, dictionary or None for non-photo files
+    """
+    def get_metadata(self):
+        if(not self.is_valid()):
+            return None
+
+        source = self.source
+
+        metadata = {
+            'date_taken': self.get_date_taken(),
+            'latitude': self.get_coordinate('latitude'),
+            'longitude': self.get_coordinate('longitude'),
+            'album': self.get_album(),
+            'mime_type': self.get_mimetype(),
+            'base_name': os.path.splitext(os.path.basename(source))[0],
+            'extension': self.get_extension()
+        }
+
+        return metadata
+    
     """
     Get the mimetype of the file.
 

elodie/media/photo.py

@@ -7,9 +7,6 @@ Photo package that handles all photo operations
 from sys import argv
 from datetime import datetime
 
-import exifread
-from fractions import Fraction
-import LatLon
 import mimetypes
 import os
 import re
@@ -22,7 +19,7 @@ Video class for general photo operations
 """
 class Photo(Media):
     # class / static variable accessible through get_valid_extensions()
-    __valid_extensions = ('jpg', 'jpeg')
+    __valid_extensions = ('jpg', 'jpeg', 'nef', 'dng')
 
     """
     @param, source, string, The fully qualified path to the photo file
@@ -51,13 +48,11 @@ class Photo(Media):
         # EXIF DateTime is already stored as a timestamp
         # Sourced from https://github.com/photo/frontend/blob/master/src/libraries/models/Photo.php#L500
         exif = self.get_exif()
+        for key in self.exif_map['date_taken']:
             try:
-            if('EXIF DateTimeOriginal' in exif):
+                if(key in exif):
-                seconds_since_epoch = time.mktime(datetime.strptime(str(exif['EXIF DateTimeOriginal']), '%Y:%m:%d %H:%M:%S').timetuple())
+                    seconds_since_epoch = time.mktime(datetime.strptime(str(exif[key]), '%Y:%m:%d %H:%M:%S').timetuple())
-            elif('EXIF DateTime' in exif):
+                    break;
-                seconds_since_epoch = time.mktime(datetime.strptime(str(exif['EXIF DateTime']), '%Y:%m:%d %H:%M:%S').timetuple())
-            elif('EXIF FileDateTime' in exif):
-                seconds_since_epoch = str(exif['EXIF DateTime'])
             except:
                 pass
 
@@ -84,77 +79,6 @@ class Photo(Media):
                 return re.search('(\d{2}:\d{2}.\d{2})', key).group(1).replace('.', ':')
         return None
 
-    """
-    Read EXIF from a photo file.
-    We store the result in a member variable so we can call get_exif() often without performance degredation
-
-    @returns, list or none for a non-photo file
-    """
-    def get_exif(self):
-        if(not self.is_valid()):
-            return None
-        
-        if(self.exif is not None):
-            return self.exif
-
-        source = self.source
-        with open(source, 'r') as f:
-            self.exif = exifread.process_file(f, details=False)
-
-        return self.exif
-
-    """
-    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 = 'GPS GPSLongitude' if type == 'longitude' else 'GPS GPSLatitude'
-        exif = self.get_exif()
-
-        if(key not in exif):
-            return None
-
-        # this is a hack to get the proper direction by negating the values for S and W
-        latdir = 1
-        if(key == 'GPS GPSLatitude' and str(exif['GPS GPSLatitudeRef']) == 'S'):
-            latdir = -1
-        londir = 1
-        if(key == 'GPS GPSLongitude' and str(exif['GPS GPSLongitudeRef']) == 'W'):
-            londir = -1
-
-        coords = [float(Fraction(ratio.num, ratio.den)) for ratio in exif[key].values]
-        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
-
-    """
-    Get a dictionary of metadata for a photo.
-    All keys will be present and have a value of None if not obtained.
-
-    @returns, dictionary or None for non-photo files
-    """
-    def get_metadata(self):
-        if(not self.is_valid()):
-            return None
-
-        source = self.source
-
-        metadata = {
-            "date_taken": self.get_date_taken(),
-            "latitude": self.get_coordinate('latitude'),
-            "longitude": self.get_coordinate('longitude'),
-            "mime_type": self.get_mimetype(),
-            "base_name": os.path.splitext(os.path.basename(source))[0],
-            "extension": self.get_extension()
-        }
-
-        return metadata
-
     """
     Static method to access static __valid_extensions variable.
 

elodie/media/video.py

@@ -29,61 +29,8 @@ class Video(Media):
     def __init__(self, source=None):
         super(Video, self).__init__(source)
 
-    """
+        # We only want to parse EXIF once so we store it here
-    Get latitude or longitude of photo from EXIF
+        self.exif = None
-
-    @returns, time object or None for non-video files or 0 timestamp
-    """
-    def get_coordinate(self, type='latitude'):
-        exif_data = self.get_exif()
-        if(exif_data is None):
-            return None
-
-        coords = re.findall('(GPS %s +: .+)' % type.capitalize(), exif_data)
-        if(coords is None or len(coords) == 0):
-            return None
-
-        coord_string = coords[0]
-        coordinate = re.findall('([0-9.]+)', coord_string)
-        direction = re.search('[NSEW]$', coord_string)
-        if(coordinate is None or direction is None):
-            return None
-
-        direction = direction.group(0)
-
-        decimal_degrees = float(coordinate[0]) + float(coordinate[1])/60 + float(coordinate[2])/3600
-        if(direction == 'S' or direction == 'W'):
-            decimal_degrees = decimal_degrees * -1
-
-        return decimal_degrees
-
-    """
-    Get the date which the video was taken.
-    The date value returned is defined by the min() of mtime and ctime.
-
-    @returns, time object or None for non-video files or 0 timestamp
-    """
-    def get_date_taken(self):
-        if(not self.is_valid()):
-            return None
-
-        source = self.source
-        seconds_since_epoch = min(os.path.getmtime(source), os.path.getctime(source))
-        # We need to parse a string from EXIF into a timestamp.
-        # we use date.strptime -> .timetuple -> time.mktime to do the conversion in the local timezone
-        exif_data = self.get_exif()
-        date = re.search('Media Create Date +: +(.+)', exif_data)
-        if(date is not None):
-            date_string = date.group(1)
-            try:
-                seconds_since_epoch = time.mktime(datetime.strptime(date_string, '%Y:%m:%d %H:%M:%S').timetuple())
-            except:
-                pass
-
-        if(seconds_since_epoch == 0):
-            return None
-
-        return time.gmtime(seconds_since_epoch)
         
     """
     Get the duration of a video in seconds.
@@ -103,44 +50,6 @@ class Video(Media):
                 return re.search('(\d{2}:\d{2}.\d{2})', key).group(1).replace('.', ':')
         return None
 
-    """
-    Get exif data from video file.
-    Not all video files have exif and this currently relies on the CLI exiftool program
-
-    @returns, string or None if exiftool is not found
-    """
-    def get_exif(self):
-        exiftool = find_executable('exiftool')
-        if(exiftool is None):
-            return None
-
-        source = self.source
-        process_output = subprocess.Popen(['%s %s ' % (exiftool, source)], stdout=subprocess.PIPE, shell=True)
-        return process_output.stdout.read()
-
-    """
-    Get a dictionary of metadata for a video.
-    All keys will be present and have a value of None if not obtained.
-
-    @returns, dictionary or None for non-video files
-    """
-    def get_metadata(self):
-        if(not self.is_valid()):
-            return None
-
-        source = self.source
-        metadata = {
-            "date_taken": self.get_date_taken(),
-            "latitude": self.get_coordinate('latitude'),
-            "longitude": self.get_coordinate('longitude'),
-            "length": self.get_duration(),
-            "mime_type": self.get_mimetype(),
-            "base_name": os.path.splitext(os.path.basename(source))[0],
-            "extension": self.get_extension()
-        }
-
-        return metadata
-
     """
     Static method to access static __valid_extensions variable.
 

import.py

@@ -36,32 +36,6 @@ def parse_arguments(args):
     config.update(args)
     return config
 
-def process_file(_file, destination, media):
-    checksum = db.checksum(_file)
-    if(checksum == None):
-        print 'Could not get checksum for %s. Skipping...' % _file
-        return
-
-    if(db.check_hash(checksum) == True):
-        print '%s already exists at %s. Skipping...' % (_file, db.get_hash(checksum))
-        return
-
-    metadata = media.get_metadata()
-
-    directory_name = filesystem.get_folder_path(date=metadata['date_taken'], latitude=metadata['latitude'], longitude=metadata['longitude'])
-
-    dest_directory = '%s/%s' % (destination, directory_name)
-    # TODO remove the day prefix of the file that was there prior to the crawl
-    file_name = filesystem.get_file_name(media)
-    dest_path = '%s/%s' % (dest_directory, file_name)
-
-    filesystem.create_directory(dest_directory)
-
-    print '%s -> %s' % (_file, dest_path)
-    #shutil.copy2(_file, dest_path)
-    shutil.move(_file, dest_path)
-    db.add_hash(checksum, dest_path)
-
 def main(argv):
 
     destination = config['destination']
@@ -95,7 +69,7 @@ def main(argv):
         if(media_type.__name__ == 'Video'):
             filesystem.set_date_from_path_video(media)
 
-        dest_path = process_file(config['file'], destination, media, allowDuplicate=False, move=False)
+        dest_path = filesystem.process_file(config['file'], destination, media, allowDuplicate=False, move=False)
         print '%s -> %s' % (current_file, dest_path)
         db.update_hash_db()
     else:

store_video.py

@@ -1,40 +0,0 @@
-#!/usr/bin/env python
-
-import os
-import shutil
-import sys
-
-from elodie.media.video import Video
-from elodie.filesystem import FileSystem
-
-print 'Running with arguments %r' % sys.argv
-
-destination = '%s/Dropbox/Videos' % os.path.expanduser('~')
-
-if __name__ == '__main__':
-    if(len(sys.argv) < 2):
-        print "No arguments passed"
-        sys.exit(0)
-
-    file_path = sys.argv[1]
-
-    filesystem = FileSystem()
-    video = Video(file_path)
-
-    # check if the file is valid else exit
-    if(not video.is_valid()):
-        print "File is not valid"
-        sys.exit(0)
-
-    metadata = video.get_metadata()
-
-    directory_name = filesystem.get_folder_name_by_date(metadata['date_taken'])
-    dest_directory = '%s/%s' % (destination, directory_name)
-    file_name = filesystem.get_file_name_for_video(video)
-
-    dest = '%s/%s' % (dest_directory, file_name)
-
-    if not os.path.exists(dest_directory):
-        os.makedirs(dest_directory)
-
-    shutil.copy2(file_path, dest)