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73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# igc2kmz/photo.py igc2kmz photo functions
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# Copyright (C) 2008 Tom Payne
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import datetime
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import os.path
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import urllib2
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import urlparse
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from coord import Coord
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import exif
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class Photo(object):
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def __init__(self, url):
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components = urlparse.urlparse(url)
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self.name = os.path.splitext(os.path.basename(components.path))[0]
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if components.scheme:
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self.url = url
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else:
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self.url = 'file://' + os.path.realpath(url)
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file = urllib2.urlopen(self.url)
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if file.info().typeheader != 'image/jpeg':
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raise RuntimeError, '%s: not an image/jpeg' % self.url
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self.jpeg = exif.JPEG(file)
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if 'DateTimeOriginal' in self.jpeg.exif:
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self.dt = exif.parse_datetime(self.jpeg.exif['DateTimeOriginal'])
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elif 'DateTime' in self.jpeg.exif:
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self.dt = exif.parse_datetime(self.jpeg.exif['DateTime'])
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else:
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self.dt = datetime.datetime(2000, 1, 1)
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if 'GPSVersionID' in self.jpeg.exif:
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lat = exif.parse_angle(self.jpeg.exif['GPSLatitude'])
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if self.jpeg.exif['GPSLatitudeRef'] == 'S\0':
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lat = -lat
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lon = exif.parse_angle(self.jpeg.exif['GPSLongitude'])
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if self.jpeg.exif['GPSLongitudeRef'] == 'W\0':
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lon = -lon
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if 'GPSAltitude' in self.jpeg.exif:
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gps_altitude = self.jpeg.exif['GPSAltitude']
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ele = float(gps_altitude[0]) / gps_altitude[1]
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self.elevation_data = True
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else:
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ele = 0
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self.elevation_data = False
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self.coord = Coord.deg(lat, lon, ele)
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else:
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self.coord = None
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self.elevation_data = None
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if 'UserComment' in self.jpeg.exif:
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user_comment = self.jpeg.exif['UserComment']
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self.description = exif.parse_usercomment(user_comment)
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else:
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self.description = None
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def to_html_img(self):
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return '<img alt="%s" src="%s" height="%d" width="%d"/>' % \
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(self.name, self.url, self.jpeg.height, self.jpeg.height)
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