127 lines
3.2 KiB
Python
127 lines
3.2 KiB
Python
"""
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Author: Jaisen Mathai <jaisen@jmathai.com>
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Photo package that handles all photo operations
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"""
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# load modules
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from datetime import datetime
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from sys import argv
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import mimetypes
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import os
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import pyexiv2
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import re
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import subprocess
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import time
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from media import Media
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from elodie import geolocation
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"""
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Photo class for general photo operations
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"""
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class Photo(Media):
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__name__ = 'Photo'
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"""
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@param, source, string, The fully qualified path to the photo file
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"""
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def __init__(self, source=None):
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super(Photo, self).__init__(source)
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# We only want to parse EXIF once so we store it here
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self.exif = None
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"""
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Get the duration of a photo in seconds.
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Uses ffmpeg/ffprobe
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@returns, string or None for a non-photo file
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"""
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def get_duration(self):
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if(not self.is_valid()):
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return None
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source = self.source
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result = subprocess.Popen(['ffprobe', source],
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stdout = subprocess.PIPE, stderr = subprocess.STDOUT)
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for key in result.stdout.readlines():
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if 'Duration' in key:
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return re.search('(\d{2}:\d{2}.\d{2})', key).group(1).replace('.', ':')
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return None
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"""
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Set the date/time a photo was taken
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@param, time, datetime, datetime object of when the photo was taken
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@returns, boolean
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"""
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def set_date_taken(self, time):
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if(time is None):
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return False
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source = self.source
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exif_metadata = pyexiv2.ImageMetadata(source)
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exif_metadata.read()
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exif_metadata['Exif.Photo.DateTimeOriginal'].value = time
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exif_metadata['Exif.Image.DateTime'].value = time
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exif_metadata.write()
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return True
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"""
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Set lat/lon for a photo
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@param, latitude, float, Latitude of the file
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@param, longitude, float, Longitude of the file
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@returns, boolean
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"""
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def set_location(self, latitude, longitude):
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if(latitude is None or longitude is None):
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return False
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source = self.source
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exif_metadata = pyexiv2.ImageMetadata(source)
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exif_metadata.read()
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exif_metadata['Exif.GPSInfo.GPSLatitude'] = geolocation.decimal_to_dms(latitude)
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exif_metadata['Exif.GPSInfo.GPSLatitudeRef'] = pyexiv2.ExifTag('Exif.GPSInfo.GPSLatitudeRef', 'N' if latitude >= 0 else 'S')
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exif_metadata['Exif.GPSInfo.GPSLongitude'] = geolocation.decimal_to_dms(longitude)
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exif_metadata['Exif.GPSInfo.GPSLongitudeRef'] = pyexiv2.ExifTag('Exif.GPSInfo.GPSLongitudeRef', 'E' if longitude >= 0 else 'W')
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exif_metadata.write()
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return True
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"""
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Set lat/lon for a photo
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@param, latitude, float, Latitude of the file
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@param, longitude, float, Longitude of the file
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@returns, boolean
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"""
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def set_title(self, title):
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if(title is None):
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return False
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source = self.source
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exif_metadata = pyexiv2.ImageMetadata(source)
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exif_metadata.read()
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exif_metadata['Xmp.dc.title'] = title
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exif_metadata.write()
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return True
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"""
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Static method to access static __valid_extensions variable.
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@returns, tuple
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"""
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@classmethod
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def get_valid_extensions(Photo):
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return Media.photo_extensions
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