markus/photofloat
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Make thumbnails.

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This commit is contained in:
Jason A. Donenfeld 2011-05-05 08:42:04 -04:00
parent c05145aee2
commit 536bc214c0
2 changed files with 106 additions and 29 deletions
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114
PhotoAlbum.py
View File

@ -6,6 +6,8 @@ from PIL.ExifTags import TAGS
def set_cache_path_base(base): def set_cache_path_base(base):
trim_base.base = base trim_base.base = base
def untrim_base(path):
return os.path.join(trim_base.base, path)
def trim_base(path): def trim_base(path):
if path.startswith(trim_base.base): if path.startswith(trim_base.base):
path = path[len(trim_base.base):] path = path[len(trim_base.base):]
@ -41,7 +43,7 @@ class Album(object):
def date(self): def date(self):
self._sort() self._sort()
if len(self._photos) == 0 and len(self._albums) == 0: if len(self._photos) == 0 and len(self._albums) == 0:
return datetime.min return datetime(1900, 1, 1)
elif len(self._photos) == 0: elif len(self._photos) == 0:
return self._albums[-1].date return self._albums[-1].date
elif len(self._albums) == 0: elif len(self._albums) == 0:
@ -77,7 +79,7 @@ class Album(object):
def from_dict(dictionary, cripple=True): def from_dict(dictionary, cripple=True):
album = Album(dictionary["path"]) album = Album(dictionary["path"])
for photo in dictionary["photos"]: for photo in dictionary["photos"]:
album.add_photo(Photo.from_dict(photo, album.path)) album.add_photo(Photo.from_dict(photo, untrim_base(album.path)))
if not cripple: if not cripple:
for subalbum in dictionary["albums"]: for subalbum in dictionary["albums"]:
album.add_album(Album.from_dict(subalbum), cripple) album.add_album(Album.from_dict(subalbum), cripple)
@ -90,46 +92,104 @@ class Album(object):
else: else:
subalbums = self._albums subalbums = self._albums
return { "path": self.path, "date": self.date, "albums": subalbums, "photos": self._photos } return { "path": self.path, "date": self.date, "albums": subalbums, "photos": self._photos }
def photo_from_path(self, path):
for photo in self._photos:
if trim_base(path) == photo._path:
print "cache hit %s" % path
return photo
return None
class Photo(object): class Photo(object):
def __init__(self, path, attributes=None): def __init__(self, path, thumb_path=None, attributes=None):
self._path = trim_base(path) self._path = trim_base(path)
self.is_valid = True self.is_valid = True
mtime = datetime.fromtimestamp(os.path.getmtime(path)) mtime = datetime.fromtimestamp(os.path.getmtime(path))
if attributes is not None and attributes["FileTime"] >= mtime: if attributes is not None and attributes["DateTimeFile"] >= mtime:
self._attributes = attributes self._attributes = attributes
return return
self._attributes = {} self._attributes = {}
self._attributes["FileTime"] = mtime self._attributes["DateTimeFile"] = mtime
try: try:
i = Image.open(path) image = Image.open(path)
except: except:
self.is_valid = False self.is_valid = False
return return
self._metadata(image)
self._thumbnails(image, thumb_path)
def _metadata(self, image):
try: try:
info = i._getexif() info = image._getexif()
except: except:
info = None return
if info: for tag, value in info.items():
for tag, value in info.items(): decoded = TAGS.get(tag, tag)
decoded = TAGS.get(tag, tag) if not isinstance(decoded, int) and decoded not in ['JPEGThumbnail', 'TIFFThumbnail', 'Filename', 'FileSource', 'MakerNote', 'UserComment', 'ImageDescription', 'ComponentsConfiguration']:
if not isinstance(decoded, int) and decoded not in ['JPEGThumbnail', 'TIFFThumbnail', 'Filename', 'FileSource', 'MakerNote', 'UserComment', 'ImageDescription', 'ComponentsConfiguration']: if isinstance(value, str):
if isinstance(value, str): value = value.strip()
value = value.strip() if decoded.startswith("DateTime"):
if decoded.startswith("DateTime"): try:
try: value = datetime.strptime(value, '%Y:%m:%d %H:%M:%S')
value = datetime.strptime(value, '%Y:%m:%d %H:%M:%S') except:
except: pass
pass self._attributes[decoded] = value
self._attributes[decoded] = value def _thumbnail(self, image, thumb_path, size, square=False):
if square:
suffix = str(size) + "s"
else:
suffix = str(size)
thumb_path = os.path.join(thumb_path, image_cache(self._path, suffix))
if os.path.exists(thumb_path) and datetime.fromtimestamp(os.path.getmtime(thumb_path)) >= self._attributes["DateTimeFile"]:
return
image = image.copy()
if square:
if image.size[0] > image.size[1]:
left = (image.size[0] - image.size[1]) / 2
top = 0
right = image.size[0] - ((image.size[0] - image.size[1]) / 2)
bottom = image.size[1]
else:
left = 0
top = (image.size[1] - image.size[0]) / 2
right = image.size[0]
bottom = image.size[1] - ((image.size[1] - image.size[0]) / 2)
image = image.crop((left, top, right, bottom))
image.thumbnail((size, size), Image.ANTIALIAS)
image.save(thumb_path, "JPEG")
print "saving %s" % thumb_path
def _thumbnails(self, image, thumb_path):
orientation = self._attributes["Orientation"]
mirror = image
if orientation == 2:
# Vertical Mirror
mirror = image.transpose(Image.FLIP_LEFT_RIGHT)
elif orientation == 3:
# Rotation 180
mirror = image.transpose(Image.ROTATE_180)
elif orientation == 4:
# Horizontal Mirror
mirror = image.transpose(Image.FLIP_TOP_BOTTOM)
elif orientation == 5:
# Horizontal Mirror + Rotation 270
mirror = image.transpose(Image.FLIP_TOP_BOTTOM).transpose(Image.ROTATE_270)
elif orientation == 6:
# Rotation 270
mirror = image.transpose(Image.ROTATE_270)
elif orientation == 7:
# Vertical Mirror + Rotation 270
mirror = image.transpose(Image.FLIP_LEFT_RIGHT).transpose(Image.ROTATE_270)
elif orientation == 8:
# Rotation 90
mirror = image.transpose(Image.ROTATE_90)
self._thumbnail(mirror, thumb_path, 100, True)
self._thumbnail(mirror, thumb_path, 640)
self._thumbnail(mirror, thumb_path, 1024)
@property @property
def name(self): def name(self):
return os.path.basename(self._path) return os.path.basename(self._path)
def __str__(self): def __str__(self):
return self.name return self.name
def cache_path(self, size):
return image_cache(self.path, size)
@property @property
def date(self): def date(self):
if "DateTimeOriginal" in self._attributes: if "DateTimeOriginal" in self._attributes:
@ -137,7 +197,7 @@ class Photo(object):
elif "DateTime" in self._attributes: elif "DateTime" in self._attributes:
return self._attributes["DateTime"] return self._attributes["DateTime"]
else: else:
return self._attributes["FileTime"] return self._attributes["DateTimeFile"]
def __cmp__(self, other): def __cmp__(self, other):
return cmp(self.date, other.date) return cmp(self.date, other.date)
@property @property
@ -148,6 +208,12 @@ class Photo(object):
del dictionary["date"] del dictionary["date"]
path = os.path.join(basepath, dictionary["name"]) path = os.path.join(basepath, dictionary["name"])
del dictionary["name"] del dictionary["name"]
for key, value in dictionary.items():
if key.startswith("DateTime"):
try:
dictionary[key] = datetime.strptime(dictionary[key], "%a %b %d %H:%M:%S %Y")
except:
pass
return Photo(path, dictionary) return Photo(path, dictionary)
def to_dict(self): def to_dict(self):
photo = { "name": self.name, "date": self.date } photo = { "name": self.name, "date": self.date }
@ -157,7 +223,7 @@ class Photo(object):
class PhotoAlbumEncoder(json.JSONEncoder): class PhotoAlbumEncoder(json.JSONEncoder):
def default(self, obj): def default(self, obj):
if isinstance(obj, datetime): if isinstance(obj, datetime):
return obj.isoformat() return obj.strftime("%a %b %d %H:%M:%S %Y")
if isinstance(obj, Album) or isinstance(obj, Photo): if isinstance(obj, Album) or isinstance(obj, Photo):
return obj.to_dict() return obj.to_dict()
return json.JSONEncoder.default(self, obj) return json.JSONEncoder.default(self, obj)

21
TreeWalker.py
View File

@ -1,5 +1,6 @@
import os import os
import os.path import os.path
from datetime import datetime
from PhotoAlbum import Photo, Album, json_cache, set_cache_path_base from PhotoAlbum import Photo, Album, json_cache, set_cache_path_base
class TreeWalker: class TreeWalker:
@ -14,17 +15,27 @@ class TreeWalker:
def walk(self, path): def walk(self, path):
cache = os.path.join(self.cache_path, json_cache(path)) cache = os.path.join(self.cache_path, json_cache(path))
cached = False cached = False
if os.path.exists(cache) and os.path.getmtime(path) <= os.path.getmtime(cache): cached_album = None
album = Album.from_cache(cache) if os.path.exists(cache):
cached = True cached_album = Album.from_cache(cache)
else: if os.path.getmtime(path) <= os.path.getmtime(cache):
cached = True
album = cached_album
if not cached:
album = Album(path) album = Album(path)
for entry in os.listdir(path): for entry in os.listdir(path):
entry = os.path.join(path, entry) entry = os.path.join(path, entry)
if os.path.isdir(entry): if os.path.isdir(entry):
album.add_album(self.walk(entry)) album.add_album(self.walk(entry))
elif not cached and os.path.isfile(entry): elif not cached and os.path.isfile(entry):
photo = Photo(entry) cache_hit = False
if cached_album:
cached_photo = cached_album.photo_from_path(entry)
if cached_photo and datetime.fromtimestamp(os.path.getmtime(entry)) <= cached_photo.attributes["DateTimeFile"]:
cache_hit = True
photo = cached_photo
if not cache_hit:
photo = Photo(entry, self.cache_path)
if photo.is_valid: if photo.is_valid:
self.all_photos.append(photo) self.all_photos.append(photo)
album.add_photo(photo) album.add_photo(photo)