294 lines
12 KiB
Python
294 lines
12 KiB
Python
# Author: Nic Wolfe <nic@wolfeden.ca>
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# URL: http://code.google.com/p/sickbeard/
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#
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# This file is part of SickRage.
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#
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# SickRage is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# SickRage is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SickRage. If not, see <http://www.gnu.org/licenses/>.
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import os.path
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import sickbeard
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from sickbeard import helpers, logger, exceptions
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from sickbeard import encodingKludge as ek
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from sickbeard.metadata.generic import GenericMetadata
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from lib.hachoir_parser import createParser
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from lib.hachoir_metadata import extractMetadata
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class ImageCache:
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def __init__(self):
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pass
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def __del__(self):
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pass
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def _cache_dir(self):
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"""
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Builds up the full path to the image cache directory
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"""
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return ek.ek(os.path.abspath, ek.ek(os.path.join, sickbeard.CACHE_DIR, 'images'))
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def _thumbnails_dir(self):
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"""
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Builds up the full path to the thumbnails image cache directory
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"""
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return ek.ek(os.path.abspath, ek.ek(os.path.join, self._cache_dir(), 'thumbnails'))
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def poster_path(self, indexer_id):
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"""
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Builds up the path to a poster cache for a given Indexer ID
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returns: a full path to the cached poster file for the given Indexer ID
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indexer_id: ID of the show to use in the file name
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"""
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poster_file_name = str(indexer_id) + '.poster.jpg'
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return ek.ek(os.path.join, self._cache_dir(), poster_file_name)
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def banner_path(self, indexer_id):
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"""
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Builds up the path to a banner cache for a given Indexer ID
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returns: a full path to the cached banner file for the given Indexer ID
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indexer_id: ID of the show to use in the file name
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"""
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banner_file_name = str(indexer_id) + '.banner.jpg'
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return ek.ek(os.path.join, self._cache_dir(), banner_file_name)
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def poster_thumb_path(self, indexer_id):
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"""
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Builds up the path to a poster cache for a given Indexer ID
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returns: a full path to the cached poster file for the given Indexer ID
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indexer_id: ID of the show to use in the file name
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"""
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posterthumb_file_name = str(indexer_id) + '.poster.jpg'
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return ek.ek(os.path.join, self._thumbnails_dir(), posterthumb_file_name)
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def banner_thumb_path(self, indexer_id):
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"""
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Builds up the path to a poster cache for a given Indexer ID
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returns: a full path to the cached poster file for the given Indexer ID
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indexer_id: ID of the show to use in the file name
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"""
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bannerthumb_file_name = str(indexer_id) + '.banner.jpg'
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return ek.ek(os.path.join, self._thumbnails_dir(), bannerthumb_file_name)
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def has_poster(self, indexer_id):
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"""
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Returns true if a cached poster exists for the given Indexer ID
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"""
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poster_path = self.poster_path(indexer_id)
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logger.log(u"Checking if file " + str(poster_path) + " exists", logger.DEBUG)
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return ek.ek(os.path.isfile, poster_path)
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def has_banner(self, indexer_id):
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"""
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Returns true if a cached banner exists for the given Indexer ID
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"""
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banner_path = self.banner_path(indexer_id)
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logger.log(u"Checking if file " + str(banner_path) + " exists", logger.DEBUG)
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return ek.ek(os.path.isfile, banner_path)
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def has_poster_thumbnail(self, indexer_id):
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"""
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Returns true if a cached poster thumbnail exists for the given Indexer ID
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"""
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poster_thumb_path = self.poster_thumb_path(indexer_id)
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logger.log(u"Checking if file " + str(poster_thumb_path) + " exists", logger.DEBUG)
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return ek.ek(os.path.isfile, poster_thumb_path)
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def has_banner_thumbnail(self, indexer_id):
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"""
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Returns true if a cached banner exists for the given Indexer ID
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"""
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banner_thumb_path = self.banner_thumb_path(indexer_id)
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logger.log(u"Checking if file " + str(banner_thumb_path) + " exists", logger.DEBUG)
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return ek.ek(os.path.isfile, banner_thumb_path)
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BANNER = 1
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POSTER = 2
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BANNER_THUMB = 3
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POSTER_THUMB = 4
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def which_type(self, path):
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"""
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Analyzes the image provided and attempts to determine whether it is a poster or banner.
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returns: BANNER, POSTER if it concluded one or the other, or None if the image was neither (or didn't exist)
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path: full path to the image
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"""
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if not ek.ek(os.path.isfile, path):
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logger.log(u"Couldn't check the type of " + str(path) + " cause it doesn't exist", logger.WARNING)
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return None
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# use hachoir to parse the image for us
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img_parser = createParser(path)
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img_metadata = extractMetadata(img_parser)
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if not img_metadata:
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logger.log(u"Unable to get metadata from " + str(path) + ", not using your existing image", logger.DEBUG)
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return None
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img_ratio = float(img_metadata.get('width')) / float(img_metadata.get('height'))
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img_parser.stream._input.close()
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# most posters are around 0.68 width/height ratio (eg. 680/1000)
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if 0.55 < img_ratio < 0.8:
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return self.POSTER
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# most banners are around 5.4 width/height ratio (eg. 758/140)
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elif 5 < img_ratio < 6:
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return self.BANNER
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else:
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logger.log(u"Image has size ratio of " + str(img_ratio) + ", unknown type", logger.WARNING)
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return None
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def _cache_image_from_file(self, image_path, img_type, indexer_id):
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"""
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Takes the image provided and copies it to the cache folder
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returns: bool representing success
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image_path: path to the image we're caching
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img_type: BANNER or POSTER
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indexer_id: id of the show this image belongs to
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"""
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# generate the path based on the type & indexer_id
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if img_type == self.POSTER:
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dest_path = self.poster_path(indexer_id)
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elif img_type == self.BANNER:
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dest_path = self.banner_path(indexer_id)
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else:
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logger.log(u"Invalid cache image type: " + str(img_type), logger.ERROR)
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return False
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# make sure the cache folder exists before we try copying to it
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if not ek.ek(os.path.isdir, self._cache_dir()):
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logger.log(u"Image cache dir didn't exist, creating it at " + str(self._cache_dir()))
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ek.ek(os.makedirs, self._cache_dir())
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if not ek.ek(os.path.isdir, self._thumbnails_dir()):
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logger.log(u"Thumbnails cache dir didn't exist, creating it at " + str(self._thumbnails_dir()))
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ek.ek(os.makedirs, self._thumbnails_dir())
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logger.log(u"Copying from " + image_path + " to " + dest_path)
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helpers.copyFile(image_path, dest_path)
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return True
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def _cache_image_from_indexer(self, show_obj, img_type):
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"""
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Retrieves an image of the type specified from indexer and saves it to the cache folder
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returns: bool representing success
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show_obj: TVShow object that we want to cache an image for
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img_type: BANNER or POSTER
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"""
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# generate the path based on the type & indexer_id
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if img_type == self.POSTER:
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img_type_name = 'poster'
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dest_path = self.poster_path(show_obj.indexerid)
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elif img_type == self.BANNER:
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img_type_name = 'banner'
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dest_path = self.banner_path(show_obj.indexerid)
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elif img_type == self.POSTER_THUMB:
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img_type_name = 'poster_thumb'
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dest_path = self.poster_thumb_path(show_obj.indexerid)
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elif img_type == self.BANNER_THUMB:
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img_type_name = 'banner_thumb'
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dest_path = self.banner_thumb_path(show_obj.indexerid)
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else:
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logger.log(u"Invalid cache image type: " + str(img_type), logger.ERROR)
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return False
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# retrieve the image from indexer using the generic metadata class
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#TODO: refactor
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metadata_generator = GenericMetadata()
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img_data = metadata_generator._retrieve_show_image(img_type_name, show_obj)
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result = metadata_generator._write_image(img_data, dest_path)
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return result
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def fill_cache(self, show_obj):
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"""
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Caches all images for the given show. Copies them from the show dir if possible, or
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downloads them from indexer if they aren't in the show dir.
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show_obj: TVShow object to cache images for
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"""
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logger.log(u"Checking if we need any cache images for show " + str(show_obj.indexerid), logger.DEBUG)
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# check if the images are already cached or not
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need_images = {self.POSTER: not self.has_poster(show_obj.indexerid),
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self.BANNER: not self.has_banner(show_obj.indexerid),
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self.POSTER_THUMB: not self.has_poster_thumbnail(show_obj.indexerid),
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self.BANNER_THUMB: not self.has_banner_thumbnail(show_obj.indexerid)}
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if not need_images[self.POSTER] and not need_images[self.BANNER] and not need_images[self.POSTER_THUMB] and not \
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need_images[self.BANNER_THUMB]:
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logger.log(u"No new cache images needed, not retrieving new ones")
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return
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# check the show dir for poster or banner images and use them
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if need_images[self.POSTER] or need_images[self.BANNER]:
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try:
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for cur_provider in sickbeard.metadata_provider_dict.values():
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logger.log(u"Checking if we can use the show image from the " + cur_provider.name + " metadata",
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logger.DEBUG)
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if ek.ek(os.path.isfile, cur_provider.get_poster_path(show_obj)):
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cur_file_name = os.path.abspath(cur_provider.get_poster_path(show_obj))
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cur_file_type = self.which_type(cur_file_name)
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if cur_file_type == None:
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logger.log(u"Unable to retrieve image type, not using the image from " + str(cur_file_name),
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logger.WARNING)
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continue
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logger.log(u"Checking if image " + cur_file_name + " (type " + str(
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cur_file_type) + " needs metadata: " + str(need_images[cur_file_type]), logger.DEBUG)
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if cur_file_type in need_images and need_images[cur_file_type]:
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logger.log(
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u"Found an image in the show dir that doesn't exist in the cache, caching it: " + cur_file_name + ", type " + str(
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cur_file_type), logger.DEBUG)
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self._cache_image_from_file(cur_file_name, cur_file_type, show_obj.indexerid)
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need_images[cur_file_type] = False
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except exceptions.ShowDirNotFoundException:
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logger.log(u"Unable to search for images in show dir because it doesn't exist", logger.WARNING)
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# download from indexer for missing ones
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for cur_image_type in [self.POSTER, self.BANNER, self.POSTER_THUMB, self.BANNER_THUMB]:
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logger.log(u"Seeing if we still need an image of type " + str(cur_image_type) + ": " + str(
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need_images[cur_image_type]), logger.DEBUG)
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if cur_image_type in need_images and need_images[cur_image_type]:
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self._cache_image_from_indexer(show_obj, cur_image_type)
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logger.log(u"Done cache check")
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