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bazarr/libs/subliminal_patch/score.py

198 lines
6.0 KiB

# coding=utf-8
from __future__ import absolute_import
import logging
from subliminal.video import Episode, Movie
from subliminal.score import get_scores
logger = logging.getLogger(__name__)
FPS_EQUALITY = ((23.976, 23.98, 24.0),)
def framerate_equal(source, check):
if source == check:
return True
source = float(source)
check = float(check)
if source == check:
return True
for equal_fps_tuple in FPS_EQUALITY:
if check in equal_fps_tuple and source in equal_fps_tuple:
return True
return False
DEFAULT_SCORES = {
"episode": {
"hash": 359,
"series": 180,
"year": 90,
"season": 30,
"episode": 30,
"release_group": 14,
"source": 7,
"audio_codec": 3,
"resolution": 2,
"video_codec": 2,
"streaming_service": 1,
"hearing_impaired": 1,
},
"movie": {
"hash": 119,
"title": 60,
"year": 30,
"release_group": 13,
"source": 7,
"audio_codec": 3,
"resolution": 2,
"video_codec": 2,
"streaming_service": 1,
"edition": 1,
"hearing_impaired": 1,
},
}
def _check_hash_sum(scores: dict):
hash_val = scores["hash"]
rest_sum = sum(val for key, val in scores.items() if key != "hash")
logger.debug("Hash value: %s -> Rest sum: %s", hash_val, rest_sum)
return rest_sum - 1 == hash_val
class ComputeScore:
def __init__(self, scores=None):
if scores:
valid = True
for val in scores.values():
if not _check_hash_sum(val):
logger.debug("Scores sum - 1 is not equal to hash. Using defaults")
self._scores = DEFAULT_SCORES
valid = False
break
if valid is True:
self._scores = scores
else:
self._scores = DEFAULT_SCORES
# Hash values should be the same. Update from defaults to ensure it
for key in self._scores.keys():
self._scores[key]["hash"] = DEFAULT_SCORES[key]["hash"]
def __call__(self, matches, subtitle, video, hearing_impaired=None):
scores = self._scores[video.__class__.__name__.lower()]
logger.debug("Scores to use for %s: %s", video, scores)
is_episode = isinstance(video, Episode)
is_movie = isinstance(video, Movie)
episode_hash_valid_if = {"series", "season", "episode", "source"}
movie_hash_valid_if = {"video_codec", "source"}
orig_matches = matches.copy()
# on hash match, discard everything else
if subtitle.hash_verifiable and "hash" in matches:
# hash is error-prone, try to fix that
hash_valid_if = episode_hash_valid_if if is_episode else movie_hash_valid_if
# don't validate hashes of specials, as season and episode tend to be wrong
if is_movie or not video.is_special:
if hash_valid_if <= set(matches):
# series, season and episode matched, hash is valid
logger.debug(
"%r: Using valid hash, as %s are correct (%r) and (%r)",
subtitle,
hash_valid_if,
matches,
video,
)
matches &= {"hash"}
else:
# no match, invalidate hash
logger.debug(
"%r: Ignoring hash as other matches are wrong (missing: %r) and (%r)",
subtitle,
hash_valid_if - matches,
video,
)
matches -= {"hash"}
elif "hash" in matches:
logger.debug(
"%r: Hash not verifiable for this provider. Keeping it", subtitle
)
matches &= {"hash"}
# handle equivalent matches
eq_matches = set()
if is_episode:
_episode_checks(video, eq_matches, matches)
elif is_movie and "imdb_id" in matches:
logger.debug("Adding imdb_id match equivalents")
eq_matches |= {"title", "year"}
matches |= eq_matches
# handle hearing impaired
if (
hearing_impaired is not None
and subtitle.hearing_impaired == hearing_impaired
):
logger.debug("Matched hearing_impaired")
matches.add("hearing_impaired")
orig_matches.add("hearing_impaired")
# compute the score
score = sum((scores.get(match, 0) for match in matches))
logger.info(
"%r: Computed score %r with final matches %r", subtitle, score, matches
)
score_without_hash = sum(
(
scores.get(match, 0)
for match in orig_matches | eq_matches
if match != "hash"
)
)
return score, score_without_hash
def _episode_checks(video, eq_matches, matches):
if "title" in matches:
logger.debug("Adding title match equivalent")
eq_matches.add("episode")
if "series_imdb_id" in matches:
logger.debug("Adding series_imdb_id match equivalent")
eq_matches |= {"series", "year"}
if "imdb_id" in matches:
logger.debug("Adding imdb_id match equivalents")
eq_matches |= {"series", "year", "season", "episode"}
if "tvdb_id" in matches:
logger.debug("Adding tvdb_id match equivalents")
eq_matches |= {"series", "year", "season", "episode", "title"}
if "series_tvdb_id" in matches:
logger.debug("Adding series_tvdb_id match equivalents")
eq_matches |= {"series", "year"}
# specials
if (
video.is_special
and "title" in matches
and "series" in matches
and "year" in matches
):
logger.debug("Adding special title match equivalent")
eq_matches |= {"season", "episode"}
compute_score = ComputeScore()