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
def rotate(self, angle=0):
"""does a looseless rotation of the given jpeg file"""
if os.name == 'nt' and self.pil != None:
del self.pil
x = self.pixelsX
y = self.pixelsY
logger.debug("Before rotation %i, x=%i, y=%i, scaledX=%i, scaledY=%i" % (angle, x, y, self.scaledPixbuffer.get_width(), self.scaledPixbuffer.get_height()))
if angle == 90:
if imageCache is not None:
Exiftran.rotate90(self.fn)
newPixbuffer = self.scaledPixbuffer.rotate_simple(gtk.gdk.PIXBUF_ROTATE_CLOCKWISE)
logger.debug("rotate 90 of %s" % newPixbuffer)
self.pixelsX = y
self.pixelsY = x
if self.metadata is not None:
self.metadata["Resolution"] = "%i x % i" % (y, x)
else:
Exiftran.rotate90(self.fn)
self.pixelsX = None
self.pixelsY = None
elif angle == 270:
if imageCache is not None:
Exiftran.rotate270(self.fn)
newPixbuffer = self.scaledPixbuffer.rotate_simple(gtk.gdk.PIXBUF_ROTATE_COUNTERCLOCKWISE)
logger.debug("rotate 270 of %s" % newPixbuffer)
self.pixelsX = y
self.pixelsY = x
if self.metadata is not None:
self.metadata["Resolution"] = "%i x % i" % (y, x)
else:
Exiftran.rotate270(self.fn)
self.pixelsX = None
self.pixelsY = None
elif angle == 180:
if imageCache is not None:
Exiftran.rotate180(self.fn)
newPixbuffer = self.scaledPixbuffer.rotate_simple(gtk.gdk.PIXBUF_ROTATE_UPSIDEDOWN)
logger.debug("rotate 270 of %s" % newPixbuffer)
else:
Exiftran.rotate180(self.fn)
self.pixelsX = None
self.pixelsY = None
else:
print "Erreur ! il n'est pas possible de faire une rotation de ce type sans perte de donnée."
if imageCache is not None:
self.scaledPixbuffer = newPixbuffer
imageCache[self.filename] = self
logger.debug("After rotation %i, x=%i, y=%i, scaledX=%i, scaledY=%i" % (angle, self.pixelsX, self.pixelsY, self.scaledPixbuffer.get_width(), self.scaledPixbuffer.get_height()))
