def extractJPEG(self):
"""
extract the raw image to its right place
"""
extension = op.splitext(self.strRawFile)[1].lower()
strJpegFullPath = op.join(config.DefaultRepository, self.getJpegPath())
if extension in config.RawExtensions:
process = subprocess.Popen("%s %s" % (config.Dcraw, self.strRawFile), shell=True, stdout=subprocess.PIPE)
ret = process.wait()
if ret != 0:
logger.error("'%s %s' ended with error %s" % (config.Dcraw, self.strRawFile, ret))
data = process.stdout.readlines()
img = Image.fromstring("RGB", tuple([int(i) for i in data[1].split()]), "".join(tuple(data[3:])))
img.save(strJpegFullPath, format='JPEG')
#Copy all metadata useful for us.
exifJpeg = Exif(strJpegFullPath)
exifJpeg.read()
exifJpeg['Exif.Image.Orientation'] = 1
exifJpeg["Exif.Photo.UserComment"] = self.strRawFile
for metadata in [ 'Exif.Image.Make', 'Exif.Image.Model', 'Exif.Photo.DateTimeOriginal', 'Exif.Photo.ExposureTime', 'Exif.Photo.FNumber', 'Exif.Photo.ExposureBiasValue', 'Exif.Photo.Flash', 'Exif.Photo.FocalLength', 'Exif.Photo.ISOSpeedRatings']:
try:
exifJpeg[metadata] = self.exif[metadata]
except:
logger.error("Unable to copying metadata %s in file %s, value: %s" % (metadata, self.strRawFile, self.exif[metadata]))
#self.exif.copyMetadataTo(self.strJepgFile)
exifJpeg.write()
else: #in config.Extensions, i.e. a JPEG file
shutil.copy(self.strRawFile, strJpegFullPath)
Exiftran.autorotate(strJpegFullPath)
os.chmod(strJpegFullPath, config.DefaultFileMode)
def autorotate(self):
"""does autorotate the image according to the EXIF tag"""
if os.name == 'nt' and self.pil is not None:
del self.pil
self.readExif()
if self.orientation != 1:
Exiftran.autorotate(self.fn)
if self.orientation > 4:
self.pixelsX = self.exif["Exif.Photo.PixelYDimension"]
self.pixelsY = self.exif["Exif.Photo.PixelXDimension"]
self.metadata["Resolution"] = "%s x %s " % (self.pixelsX, self.pixelsY)
self.orientation = 1