summaryrefslogtreecommitdiffhomepage
path: root/libs/subliminal_patch/providers/embeddedsubtitles.py
blob: 3d9e649590b4210438b70334c0549f7f3571aea2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
# -*- coding: utf-8 -*-

import logging
import os
import shutil
import tempfile

from babelfish import language_converters
import fese
from fese import check_integrity
from fese import FFprobeSubtitleStream
from fese import FFprobeVideoContainer
from fese import to_srt
from subliminal.subtitle import fix_line_ending
from subliminal_patch.core import Episode
from subliminal_patch.core import Movie
from subliminal_patch.providers import Provider
from subliminal_patch.subtitle import Subtitle
from subzero.language import Language

logger = logging.getLogger(__name__)

# Replace Babelfish's Language with Subzero's Language
fese.Language = Language


class EmbeddedSubtitle(Subtitle):
    provider_name = "embeddedsubtitles"
    hash_verifiable = False

    def __init__(self, stream, container, matches):
        super().__init__(stream.language, stream.disposition.hearing_impaired)
        self.stream: FFprobeSubtitleStream = stream
        self.container: FFprobeVideoContainer = container
        self.forced = stream.disposition.forced
        self._matches: set = matches
        self.page_link = self.container.path
        self.release_info = os.path.basename(self.page_link)

    def get_matches(self, video):
        if self.hearing_impaired:
            self._matches.add("hearing_impaired")

        self._matches.add("hash")
        return self._matches

    @property
    def id(self):
        return f"{self.container.path}_{self.stream.index}"


class EmbeddedSubtitlesProvider(Provider):
    provider_name = "embeddedsubtitles"

    languages = {Language("por", "BR"), Language("spa", "MX")} | {
        Language.fromalpha2(l) for l in language_converters["alpha2"].codes
    }
    languages.update(set(Language.rebuild(lang, hi=True) for lang in languages))
    languages.update(set(Language.rebuild(lang, forced=True) for lang in languages))

    video_types = (Episode, Movie)
    subtitle_class = EmbeddedSubtitle

    def __init__(
        self,
        include_ass=True,
        include_srt=True,
        cache_dir=None,
        ffprobe_path=None,
        ffmpeg_path=None,
    ):
        self._include_ass = include_ass
        self._include_srt = include_srt
        self._cache_dir = os.path.join(
            cache_dir or tempfile.gettempdir(), self.__class__.__name__.lower()
        )
        self._cached_paths = {}

        fese.FFPROBE_PATH = ffprobe_path or fese.FFPROBE_PATH
        fese.FFMPEG_PATH = ffmpeg_path or fese.FFMPEG_PATH

        if logger.getEffectiveLevel() == logging.DEBUG:
            fese.FF_LOG_LEVEL = "warning"
        else:
            # Default is True
            fese.FFMPEG_STATS = False

    def initialize(self):
        os.makedirs(self._cache_dir, exist_ok=True)

    def terminate(self):
        # Remove leftovers
        shutil.rmtree(self._cache_dir, ignore_errors=True)

    def query(self, path: str, languages):
        video = FFprobeVideoContainer(path)

        try:
            streams = filter(_check_allowed_extensions, video.get_subtitles())
        except fese.InvalidSource as error:
            logger.error("Error trying to get subtitles for %s: %s", video, error)
            streams = []

        if not streams:
            logger.debug("No subtitles found for container: %s", video)

        only_forced = all(lang.forced for lang in languages)
        also_forced = any(lang.forced for lang in languages)

        subtitles = []

        for stream in streams:
            if not self._include_ass and stream.extension == "ass":
                logger.debug("Ignoring ASS: %s", stream)
                continue

            if not self._include_srt and stream.extension == "srt":
                logger.debug("Ignoring SRT: %s", stream)
                continue

            if stream.language not in languages:
                continue

            disposition = stream.disposition

            if only_forced and not disposition.forced:
                continue

            if (
                disposition.generic
                or disposition.hearing_impaired
                or (disposition.forced and also_forced)
            ):
                logger.debug("Appending subtitle: %s", stream)
                subtitles.append(EmbeddedSubtitle(stream, video, {"hash"}))
            else:
                logger.debug("Ignoring unwanted subtitle: %s", stream)

        return subtitles

    def list_subtitles(self, video, languages):
        return self.query(video.name, languages)

    def download_subtitle(self, subtitle):
        path = self._get_subtitle_path(subtitle)
        with open(path, "rb") as sub:
            content = sub.read()
            subtitle.content = fix_line_ending(content)

    def _get_subtitle_path(self, subtitle: EmbeddedSubtitle):
        container = subtitle.container

        # Check if the container is not already in the instance
        if container.path not in self._cached_paths:
            # Extract all subittle streams to avoid reading the entire
            # container over and over
            streams = filter(_check_allowed_extensions, container.get_subtitles())
            extracted = container.extract_subtitles(list(streams), self._cache_dir)
            # Add the extracted paths to the containter path key
            self._cached_paths[container.path] = extracted

        cached_path = self._cached_paths[container.path]
        # Get the subtitle file by index
        subtitle_path = cached_path[subtitle.stream.index]

        check_integrity(subtitle.stream, subtitle_path)

        # Convert to SRT if the subtitle is ASS
        new_subtitle_path = to_srt(subtitle_path, remove_source=True)
        if new_subtitle_path != subtitle_path:
            cached_path[subtitle.stream.index] = new_subtitle_path

        return new_subtitle_path


def _check_allowed_extensions(subtitle: FFprobeSubtitleStream):
    return subtitle.extension in ("ass", "srt")