clean up thumb generation
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435be8d112
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@ -3,10 +3,11 @@ import math
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import time
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import logging
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import cherrypy
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from collections import defaultdict
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from urllib.parse import urlparse
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from datetime import datetime, timedelta
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from photoapp.thumb import ThumbGenerator
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from photoapp.types import Photo, PhotoSet, Tag, TagItem, PhotoStatus, User, mime2ext
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from photoapp.types import Photo, PhotoSet, Tag, TagItem, PhotoStatus, User, mime2ext, regular_mimes, video_mimes
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from photoapp.dbsession import DatabaseSession
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from photoapp.common import pwhash
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from photoapp.api import PhotosApi, LibraryManager
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@ -241,6 +242,8 @@ class ThumbnailView(object):
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@cherrypy.expose
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def index(self, item_type, thumb_size, uuid):
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# TODO some lock around calls to this based on photoset uuid
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# TODO it is currently arbitrary which jpg of many or which video of many becomes the thumb. Make it certain.
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uuid = uuid.split(".")[0]
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query = photoset_auth_filter(db.query(Photo).join(PhotoSet))
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@ -250,25 +253,38 @@ class ThumbnailView(object):
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assert query
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# prefer making thumbs from jpeg to avoid loading large raws
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# jk we can't load raws anyway
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first = None
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best = None
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formats = defaultdict(list)
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for photo in query.all():
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if first is None:
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first = photo
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if photo.format == "image/jpeg":
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best = photo
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break
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thumb_from = best or first
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if not thumb_from:
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raise cherrypy.HTTPError(404)
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# TODO some lock around calls to this based on uuid
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thumb_fobj = self.master.thumbtool.make_thumb(thumb_from, thumb_size)
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formats[photo.format].append(photo)
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formats = dict(formats)
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if thumb_fobj:
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return cherrypy.lib.static.serve_fileobj(thumb_fobj, "image/jpeg")
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else:
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# prefer image files. If an image is available assume it is the target or intended to be the thumbnail.
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imtypes = regular_mimes.intersection(set(formats.keys()))
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if imtypes:
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# prefer making thumbs from jpeg to avoid loading large raws
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# jk we can't load raws anyway
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thumb_from = formats.get("image/jpeg")
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if thumb_from:
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thumb_from = thumb_from[0] # TODO if we're thumbing a set this is an arbitrary image picked
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else:
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t = imtypes.pop() # TODO arbitrary
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thumb_from = formats[t][0] # TODO arbitrary
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thumb_fobj = self.master.thumbtool.make_photo_thumb(thumb_from, thumb_size)
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if thumb_fobj:
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return cherrypy.lib.static.serve_fileobj(thumb_fobj, "image/jpeg")
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else:
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return cherrypy.lib.static.serve_file(os.path.join(APPROOT, "assets/img/unknown.svg"), "image/svg+xml")
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elif video_mimes.intersection(set(formats.keys())):
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# call out to the video thumb service
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#TODO call out - placeholder for now
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#TODO thumb service configuration option or show the ? (or a thumb that suggests its a video?)
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#TODO make this set no cache headers
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return cherrypy.lib.static.serve_file(os.path.join(APPROOT, "assets/img/unknown.svg"), "image/svg+xml")
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else: # No convertable file types
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return cherrypy.lib.static.serve_file(os.path.join(APPROOT, "assets/img/unknown.svg"), "image/svg+xml")
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@ -11,40 +11,70 @@ from contextlib import closing
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import logging
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# style tuples: max x, max y, rotate ok)
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# rotate ok means x and y maxes can be swapped if it fits the image's aspect ratio better
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THUMB_STYLES = {"tiny": (80, 80, False),
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"small": (100, 100, False),
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"feed": (250, 250, False),
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"preview": (1024, 768, True),
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"big": (2048, 1536, True)}
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def gen_thumb(src_img, dest_img, width, height, rotation):
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start = time()
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# TODO lock around the dir creation
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os.makedirs(os.path.split(dest_img)[0], exist_ok=True)
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image = Image.open(src_img)
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if image.mode != "RGB":
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image = image.convert("RGB")
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image = image.rotate(90 * rotation, expand=True)
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thumb = ImageOps.fit(image, (width, height), Image.ANTIALIAS)
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thumb.save(dest_img, 'JPEG')
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logging.info("Generated {} in {}s".format(dest_img, round(time() - start, 4)))
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return dest_img
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def gen_thumb_process(src_img, dest_img, width, height, rotation):
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try:
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return gen_thumb(src_img, dest_img, width, height, rotation)
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except Exception:
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traceback.print_exc()
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if os.path.exists(dest_img):
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os.unlink(dest_img)
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sys.exit(1)
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def thumb_path(style_name, uuid):
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return os.path.join("thumbs", style_name, uuid[0:2], "{}.jpg".format(uuid))
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class ThumbGenerator(object):
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def __init__(self, library, storage):
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self.library = library
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self.storage = storage
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self._failed_thumbs_cache = defaultdict(dict)
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def get_datedir_path(self, date):
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"""
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Return a path like 2018/3/31 given a datetime object representing the same date
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"""
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return os.path.join(str(date.year), str(date.month), str(date.day))
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def make_thumb(self, photo, style):
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def make_photo_thumb(self, photo, style_name):
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"""
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Create a thumbnail of the given photo, scaled/cropped to the given named style
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:return: local path to thumbnail file or None if creation failed or was blocked
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"""
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# style tuples: max x, max y, rotate ok)
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# rotate ok means x and y maxes can be swapped if it fits the image's aspect ratio better
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styles = {"tiny": (80, 80, False),
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"small": (100, 100, False),
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"feed": (250, 250, False),
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"preview": (1024, 768, True),
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"big": (2048, 1536, True)}
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dest = os.path.join("thumbs", style, photo.uuid[0:2], "{}.jpg".format(photo.uuid))
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dest = thumb_path(style_name, photo.uuid)
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if self.storage.exists(dest):
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return self.storage.open(dest, "rb")
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if photo.width is None: # todo better detection of images that PIL can't open
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return None
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if photo.uuid in self._failed_thumbs_cache[style]:
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if photo.uuid in self._failed_thumbs_cache[style_name]:
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return None
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thumb_width, thumb_height, flip_ok = styles[style]
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# if photo.width is None: # todo better detection of images that PIL can't open
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# return None
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thumb_width, thumb_height, flip_ok = THUMB_STYLES[style_name]
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i_width = photo.width
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i_height = photo.height
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im_is_rotated = photo.orientation % 2 != 0 or i_height > i_width
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@ -52,8 +82,9 @@ class ThumbGenerator(object):
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if im_is_rotated and flip_ok:
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thumb_width, thumb_height = thumb_height, thumb_width
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thumb_width = min(thumb_width, i_width if i_width > 0 else 999999999) # TODO do we even have photo.width if PIL can't read the image?
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thumb_height = min(thumb_height, i_height if i_height > 0 else 999999999) # TODO this seems bad
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thumb_width = min(thumb_width, i_width if i_width > 0 else 999999999)
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thumb_height = min(thumb_height, i_height if i_height > 0 else 999999999)
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# TODO have the subprocess download the file
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# TODO thundering herd
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@ -64,11 +95,12 @@ class ThumbGenerator(object):
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with open(fpath, 'wb') as ftmpdest:
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copyfileobj(fsrc, ftmpdest)
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p = Process(target=self.gen_thumb, args=(fpath, fthumblocal.name, thumb_width, thumb_height, photo.orientation))
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p = Process(target=gen_thumb_process,
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args=(fpath, fthumblocal.name, thumb_width, thumb_height, photo.orientation))
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p.start()
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p.join()
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if p.exitcode != 0:
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self._failed_thumbs_cache[style][photo.uuid] = True # dont retry failed generations
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self._failed_thumbs_cache[style_name][photo.uuid] = True # dont retry failed generations
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return None
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with closing(self.storage.open(dest, 'wb')) as fdest:
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@ -76,20 +108,3 @@ class ThumbGenerator(object):
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fthumblocal.seek(0)
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return fthumblocal
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@staticmethod
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def gen_thumb(src_img, dest_img, width, height, rotation):
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try:
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start = time()
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# TODO lock around the dir creation
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os.makedirs(os.path.split(dest_img)[0], exist_ok=True)
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image = Image.open(src_img)
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image = image.rotate(90 * rotation, expand=True)
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thumb = ImageOps.fit(image, (width, height), Image.ANTIALIAS)
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thumb.save(dest_img, 'JPEG')
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logging.info("Generated {} in {}s".format(dest_img, round(time() - start, 4)))
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except Exception:
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traceback.print_exc()
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if os.path.exists(dest_img):
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os.unlink(dest_img)
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sys.exit(1)
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@ -60,12 +60,14 @@ known_mimes = set.union(*[i["mimes"] for i in ftypes.values()])
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# we can pull metadata out of these
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# jpg, png, gif etc
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regular_images = set([extension for extension, ftype in ftypes.items() if ftype["category"] == fcategory.image])
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regular_mimes = set().union(*[ftype["mimes"] for ftype in ftypes.values() if ftype["category"] == fcategory.image])
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# "derived" files, treated as black boxes, we can't open them because proprietary
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# cr2, xmp, etc
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files_raw = set([extension for extension, ftype in ftypes.items() if ftype["category"] == fcategory.raw])
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# video types
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# mp4, mov, etc
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files_video = set([extension for extension, ftype in ftypes.items() if ftype["category"] == fcategory.video])
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video_mimes = set().union(*[ftype["mimes"] for ftype in ftypes.values() if ftype["category"] == fcategory.video])
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def mime2ext(mime):
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