python-gallery/gallery/metadata.py

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import PIL
from PIL import Image
from PIL.ExifTags import TAGS, GPSTAGS
from datetime import datetime
class metadata:
def yoink(filename):
exif = metadata.getFile(filename)
if exif:
formatted = metadata.format(exif)
else:
return None
return metadata.deleteEmpty(formatted)
def deleteEmpty(dict):
new_dict = {}
for section in dict:
tmp = {}
for value in dict[section]:
if dict[section][value]['raw'] != None:
if isinstance(dict[section][value]['raw'], PIL.TiffImagePlugin.IFDRational):
dict[section][value]['raw'] = dict[section][value]['raw'].__float__()
elif isinstance(dict[section][value]['raw'], bytes):
dict[section][value]['raw'] = dict[section][value]['raw'].decode('utf-8')
tmp[value] = dict[section][value]
if len(tmp) > 0:
new_dict[section] = tmp
return new_dict
def getFile(filename):
try:
file = Image.open(filename)
raw = file._getexif()
exif = {}
for tag, value in TAGS.items():
if tag in raw:
data = raw[tag]
else:
data = None
exif[value] = {"tag": tag, "raw": data}
file.close()
return exif
except Exception as e:
return None
def format(raw):
exif = {}
exif['Photographer'] = {
'Artist': {
'type': 'text',
'raw': raw["Artist"]["raw"]
},
'Comment': {
'type': 'text',
'raw': raw["UserComment"]["raw"]
},
'Description': {
'type': 'text',
'raw': raw["ImageDescription"]["raw"]
},
'Date Digitized': {
'type': 'date',
'raw': raw["DateTimeDigitized"]["raw"],
'formatted': metadata.date(raw["DateTimeDigitized"]["raw"])
},
'Copyright': {
'type': 'text',
'raw': raw["Copyright"]["raw"]
},
}
exif['Camera'] = {
'Model': {
'type': 'text',
'raw': raw['Model']['raw']
},
'Make': {
'type': 'text',
'raw': raw['Make']['raw']
},
'Lense Model': {
'type': 'text',
'raw': raw['LensModel']['raw'],
},
'Lense Spec': {
'type': 'text',
'raw': raw['LensSpecification']['raw'],
'formatted': metadata.lensSpecification(raw['LensSpecification']['raw'])
},
'Component Config': {
'type': 'text',
'raw': raw['ComponentsConfiguration']['raw'],
'formatted': metadata.componentsConfiguration(raw['ComponentsConfiguration']['raw'])
},
'Date Processed': {
'type': 'date',
'raw': raw['DateTime']['raw'],
'formatted': metadata.date(raw['DateTime']['raw'])
},
}
exif['Software'] = {
'Software': {
'type': 'text',
'raw': raw['Software']['raw']
},
'Colour Space': {
'type': 'number',
'raw': raw['ColorSpace']['raw'],
'formatted': metadata.colorSpace(raw['ColorSpace']['raw'])
},
'Compression': {
'type': 'number',
'raw': raw['Compression']['raw'],
'formatted': metadata.compression(raw['Compression']['raw'])
},
}
exif['Photo'] = {
'FNumber': {
'type': 'fnumber',
'raw': raw["FNumber"]["raw"],
'formatted': metadata.fnumber(raw["FNumber"]["raw"])
},
'Focal Length': {
'type': 'focal',
'raw': raw["FocalLength"]["raw"]
},
'Focal Length - Film': {
'type': 'focal',
'raw': raw["FocalLengthIn35mmFilm"]["raw"]
},
'Max Aperture': {
'type': 'fnumber',
'raw': raw["MaxApertureValue"]["raw"],
'formatted': metadata.fnumber(raw["MaxApertureValue"]["raw"])
},
'Aperture': {
'type': 'fnumber',
'raw': raw["ApertureValue"]["raw"],
'formatted': metadata.fnumber(raw["ApertureValue"]["raw"])
},
'Shutter Speed': {
'type': 'shutter',
'raw': raw["ShutterSpeedValue"]["raw"],
'formatted': metadata.shutter(raw["ShutterSpeedValue"]["raw"])
},
'ISO Speed Ratings': {
'type': 'number',
'raw': raw["ISOSpeedRatings"]["raw"],
'formatted': metadata.iso(raw["ISOSpeedRatings"]["raw"])
},
'ISO Speed': {
'type': 'iso',
'raw': raw["ISOSpeed"]["raw"],
'formatted': metadata.iso(raw["ISOSpeed"]["raw"])
},
'Sensitivity Type': {
'type': 'number',
'raw': raw["SensitivityType"]["raw"],
'formatted': metadata.sensitivityType(raw["SensitivityType"]["raw"])
},
'Exposure Bias': {
'type': 'ev',
'raw': raw["ExposureBiasValue"]["raw"],
'formatted': metadata.ev(raw["ExposureBiasValue"]["raw"])
},
'Exposure Time': {
'type': 'shutter',
'raw': raw["ExposureTime"]["raw"],
'formatted': metadata.shutter(raw["ExposureTime"]["raw"])
},
'Exposure Mode': {
'type': 'number',
'raw': raw["ExposureMode"]["raw"],
'formatted': metadata.exposureMode(raw["ExposureMode"]["raw"])
},
'Exposure Program': {
'type': 'number',
'raw': raw["ExposureProgram"]["raw"],
'formatted': metadata.exposureProgram(raw["ExposureProgram"]["raw"])
},
'White Balance': {
'type': 'number',
'raw': raw["WhiteBalance"]["raw"],
'formatted': metadata.whiteBalance(raw["WhiteBalance"]["raw"])
},
'Flash': {
'type': 'number',
'raw': raw["Flash"]["raw"],
'formatted': metadata.flash(raw["Flash"]["raw"])
},
'Metering Mode': {
'type': 'number',
'raw': raw["MeteringMode"]["raw"],
'formatted': metadata.meteringMode(raw["MeteringMode"]["raw"])
},
'Light Source': {
'type': 'number',
'raw': raw["LightSource"]["raw"],
'formatted': metadata.lightSource(raw["LightSource"]["raw"])
},
'Scene Capture Type': {
'type': 'number',
'raw': raw["SceneCaptureType"]["raw"],
'formatted': metadata.sceneCaptureType(raw["SceneCaptureType"]["raw"])
},
'Scene Type': {
'type': 'number',
'raw': raw["SceneType"]["raw"],
'formatted': metadata.sceneType(raw["SceneType"]["raw"])
},
}
exif['File'] = {
'Width': {
'type': 'number',
'raw': raw["ImageWidth"]["raw"]
},
'Height': {
'type': 'number',
'raw': raw["ImageLength"]["raw"]
},
'Orientation': {
'type': 'number',
'raw': raw["Orientation"]["raw"],
'formatted': metadata.orientation(raw["Orientation"]["raw"])
},
'Xresolution': {
'type': 'number',
'raw': raw["XResolution"]["raw"]
},
'Yresolution': {
'type': 'number',
'raw': raw["YResolution"]["raw"]
},
'Resolution Units': {
'type': 'number',
'raw': raw["ResolutionUnit"]["raw"],
'formatted': metadata.resolutionUnit(raw["ResolutionUnit"]["raw"])
},
}
return exif
def date(date):
date_format = '%Y:%m:%d %H:%M:%S'
if date:
return str(datetime.strptime(date, date_format))
else:
return None
def fnumber(value):
if value != None:
return 'f/' + str(value)
else:
return None
def iso(value):
if value != None:
return 'ISO ' + str(value)
else:
return None
def shutter(value):
if value != None:
return str(value) + 's'
else:
return None
def focal(value):
if value != None:
return str(value[0] / value[1]) + 'mm'
else:
return None
def ev(value):
if value != None:
return str(value) + 'EV'
else:
return None
def colorSpace(value):
types = {
1: 'sRGB',
65535: 'Uncalibrated',
0: 'Reserved'
}
try:
return types[int(value)]
except:
return None
def flash(value):
types = {
0: 'Flash did not fire',
1: 'Flash fired',
5: 'Strobe return light not detected',
7: 'Strobe return light detected',
9: 'Flash fired, compulsory flash mode',
13: 'Flash fired, compulsory flash mode, return light not detected',
15: 'Flash fired, compulsory flash mode, return light detected',
16: 'Flash did not fire, compulsory flash mode',
24: 'Flash did not fire, auto mode',
25: 'Flash fired, auto mode',
29: 'Flash fired, auto mode, return light not detected',
31: 'Flash fired, auto mode, return light detected',
32: 'No flash function',
65: 'Flash fired, red-eye reduction mode',
69: 'Flash fired, red-eye reduction mode, return light not detected',
71: 'Flash fired, red-eye reduction mode, return light detected',
73: 'Flash fired, compulsory flash mode, red-eye reduction mode',
77: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected',
79: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light detected',
89: 'Flash fired, auto mode, red-eye reduction mode',
93: 'Flash fired, auto mode, return light not detected, red-eye reduction mode',
95: 'Flash fired, auto mode, return light detected, red-eye reduction mode'
}
try:
return types[int(value)]
except:
return None
def exposureProgram(value):
types = {
0: 'Not defined',
1: 'Manual',
2: 'Normal program',
3: 'Aperture priority',
4: 'Shutter priority',
5: 'Creative program',
6: 'Action program',
7: 'Portrait mode',
8: 'Landscape mode'
}
try:
return types[int(value)]
except:
return None
def meteringMode(value):
types = {
0: 'Unknown',
1: 'Average',
2: 'Center-Weighted Average',
3: 'Spot',
4: 'Multi-Spot',
5: 'Pattern',
6: 'Partial',
255: 'Other'
}
try:
return types[int(value)]
except:
return None
def resolutionUnit(value):
types = {
1: 'No absolute unit of measurement',
2: 'Inch',
3: 'Centimeter'
}
try:
return types[int(value)]
except:
return None
def lightSource(value):
types = {
0: 'Unknown',
1: 'Daylight',
2: 'Fluorescent',
3: 'Tungsten (incandescent light)',
4: 'Flash',
9: 'Fine weather',
10: 'Cloudy weather',
11: 'Shade',
12: 'Daylight fluorescent (D 5700 - 7100K)',
13: 'Day white fluorescent (N 4600 - 5400K)',
14: 'Cool white fluorescent (W 3900 - 4500K)',
15: 'White fluorescent (WW 3200 - 3700K)',
17: 'Standard light A',
18: 'Standard light B',
19: 'Standard light C',
20: 'D55',
21: 'D65',
22: 'D75',
23: 'D50',
24: 'ISO studio tungsten',
255: 'Other light source',
}
try:
return types[int(value)]
except:
return None
def sceneCaptureType(value):
types = {
0: 'Standard',
1: 'Landscape',
2: 'Portrait',
3: 'Night scene',
}
try:
return types[int(value)]
except:
return None
def sceneType(value):
if value:
return 'Directly photographed image'
else:
return None
def whiteBalance(value):
types = {
0: 'Auto white balance',
1: 'Manual white balance',
}
try:
return types[int(value)]
except:
return None
def exposureMode(value):
types = {
0: 'Auto exposure',
1: 'Manual exposure',
2: 'Auto bracket',
}
try:
return types[int(value)]
except:
return None
def sensitivityType(value):
types = {
0: 'Unknown',
1: 'Standard Output Sensitivity',
2: 'Recommended Exposure Index',
3: 'ISO Speed',
4: 'Standard Output Sensitivity and Recommended Exposure Index',
5: 'Standard Output Sensitivity and ISO Speed',
6: 'Recommended Exposure Index and ISO Speed',
7: 'Standard Output Sensitivity, Recommended Exposure Index and ISO Speed',
}
try:
return types[int(value)]
except:
return None
def lensSpecification(value):
if value:
return str(value[0] / value[1]) + 'mm - ' + str(value[2] / value[3]) + 'mm'
else:
return None
def compression(value):
types = {
1: 'Uncompressed',
6: 'JPEG compression',
}
try:
return types[int(value)]
except:
return None
def orientation(value):
types = {
1: 'Horizontal (normal)',
2: 'Mirror horizontal',
3: 'Rotate 180',
4: 'Mirror vertical',
5: 'Mirror horizontal and rotate 270 CW',
6: 'Rotate 90 CW',
7: 'Mirror horizontal and rotate 90 CW',
8: 'Rotate 270 CW',
}
try:
return types[int(value)]
except:
return None
def componentsConfiguration(value):
types = {
0: '',
1: 'Y',
2: 'Cb',
3: 'Cr',
4: 'R',
5: 'G',
6: 'B',
}
try:
return ''.join([types[int(x)] for x in value])
except:
return None