devine/devine/core/tracks/tracks.py

435 lines
17 KiB
Python

from __future__ import annotations
import logging
import subprocess
from functools import partial
from pathlib import Path
from typing import Callable, Iterator, Optional, Sequence, Union
from langcodes import Language, closest_supported_match
from rich.progress import BarColumn, Progress, SpinnerColumn, TextColumn, TimeRemainingColumn
from rich.table import Table
from rich.tree import Tree
from devine.core.config import config
from devine.core.console import console
from devine.core.constants import LANGUAGE_MAX_DISTANCE, AnyTrack, TrackT
from devine.core.events import events
from devine.core.tracks.attachment import Attachment
from devine.core.tracks.audio import Audio
from devine.core.tracks.chapters import Chapter, Chapters
from devine.core.tracks.subtitle import Subtitle
from devine.core.tracks.track import Track
from devine.core.tracks.video import Video
from devine.core.utilities import is_close_match, sanitize_filename
from devine.core.utils.collections import as_list, flatten
class Tracks:
"""
Video, Audio, Subtitle, Chapter, and Attachment Track Store.
It provides convenience functions for listing, sorting, and selecting tracks.
"""
TRACK_ORDER_MAP = {
Video: 0,
Audio: 1,
Subtitle: 2,
Chapter: 3,
Attachment: 4
}
def __init__(self, *args: Union[
Tracks,
Sequence[Union[AnyTrack, Chapter, Chapters, Attachment]],
Track,
Chapter,
Chapters,
Attachment
]):
self.videos: list[Video] = []
self.audio: list[Audio] = []
self.subtitles: list[Subtitle] = []
self.chapters = Chapters()
self.attachments: list[Attachment] = []
if args:
self.add(args)
def __iter__(self) -> Iterator[AnyTrack]:
return iter(as_list(self.videos, self.audio, self.subtitles))
def __len__(self) -> int:
return len(self.videos) + len(self.audio) + len(self.subtitles)
def __add__(
self,
other: Union[
Tracks,
Sequence[Union[AnyTrack, Chapter, Chapters, Attachment]],
Track,
Chapter,
Chapters,
Attachment
]
) -> Tracks:
self.add(other)
return self
def __repr__(self) -> str:
return "{name}({items})".format(
name=self.__class__.__name__,
items=", ".join([f"{k}={repr(v)}" for k, v in self.__dict__.items()])
)
def __str__(self) -> str:
rep = {
Video: [],
Audio: [],
Subtitle: [],
Chapter: [],
Attachment: []
}
tracks = [*list(self), *self.chapters]
for track in sorted(tracks, key=lambda t: self.TRACK_ORDER_MAP[type(t)]):
if not rep[type(track)]:
count = sum(type(x) is type(track) for x in tracks)
rep[type(track)].append("{count} {type} Track{plural}{colon}".format(
count=count,
type=track.__class__.__name__,
plural="s" if count != 1 else "",
colon=":" if count > 0 else ""
))
rep[type(track)].append(str(track))
for type_ in list(rep):
if not rep[type_]:
del rep[type_]
continue
rep[type_] = "\n".join(
[rep[type_][0]] +
[f"├─ {x}" for x in rep[type_][1:-1]] +
[f"└─ {rep[type_][-1]}"]
)
rep = "\n".join(list(rep.values()))
return rep
def tree(self, add_progress: bool = False) -> tuple[Tree, list[partial]]:
all_tracks = [*list(self), *self.chapters, *self.attachments]
progress_callables = []
tree = Tree("", hide_root=True)
for track_type in self.TRACK_ORDER_MAP:
tracks = list(x for x in all_tracks if isinstance(x, track_type))
if not tracks:
continue
num_tracks = len(tracks)
track_type_plural = track_type.__name__ + ("s" if track_type != Audio and num_tracks != 1 else "")
tracks_tree = tree.add(f"[repr.number]{num_tracks}[/] {track_type_plural}")
for track in tracks:
if add_progress and track_type not in (Chapter, Attachment):
progress = Progress(
SpinnerColumn(finished_text=""),
BarColumn(),
"",
TimeRemainingColumn(compact=True, elapsed_when_finished=True),
"",
TextColumn("[progress.data.speed]{task.fields[downloaded]}"),
console=console,
speed_estimate_period=10
)
task = progress.add_task("", downloaded="-")
progress_callables.append(partial(progress.update, task_id=task))
track_table = Table.grid()
track_table.add_row(str(track)[6:], style="text2")
track_table.add_row(progress)
tracks_tree.add(track_table)
else:
tracks_tree.add(str(track)[6:], style="text2")
return tree, progress_callables
def exists(self, by_id: Optional[str] = None, by_url: Optional[Union[str, list[str]]] = None) -> bool:
"""Check if a track already exists by various methods."""
if by_id: # recommended
return any(x.id == by_id for x in self)
if by_url:
return any(x.url == by_url for x in self)
return False
def add(
self,
tracks: Union[
Tracks,
Sequence[Union[AnyTrack, Chapter, Chapters, Attachment]],
Track,
Chapter,
Chapters,
Attachment
],
warn_only: bool = False
) -> None:
"""Add a provided track to its appropriate array and ensuring it's not a duplicate."""
if isinstance(tracks, Tracks):
tracks = [*list(tracks), *tracks.chapters, *tracks.attachments]
duplicates = 0
for track in flatten(tracks):
if self.exists(by_id=track.id):
if not warn_only:
raise ValueError(
"One or more of the provided Tracks is a duplicate. "
"Track IDs must be unique but accurate using static values. The "
"value should stay the same no matter when you request the same "
"content. Use a value that has relation to the track content "
"itself and is static or permanent and not random/RNG data that "
"wont change each refresh or conflict in edge cases."
)
duplicates += 1
continue
if isinstance(track, Video):
self.videos.append(track)
elif isinstance(track, Audio):
self.audio.append(track)
elif isinstance(track, Subtitle):
self.subtitles.append(track)
elif isinstance(track, Chapter):
self.chapters.add(track)
elif isinstance(track, Attachment):
self.attachments.append(track)
else:
raise ValueError("Track type was not set or is invalid.")
log = logging.getLogger("Tracks")
if duplicates:
log.warning(f" - Found and skipped {duplicates} duplicate tracks...")
def sort_videos(self, by_language: Optional[Sequence[Union[str, Language]]] = None) -> None:
"""Sort video tracks by bitrate, and optionally language."""
if not self.videos:
return
# bitrate
self.videos.sort(
key=lambda x: float(x.bitrate or 0.0),
reverse=True
)
# language
for language in reversed(by_language or []):
if str(language) == "all":
language = next((x.language for x in self.videos if x.is_original_lang), "")
if not language:
continue
self.videos.sort(key=lambda x: str(x.language))
self.videos.sort(key=lambda x: not is_close_match(language, [x.language]))
def sort_audio(self, by_language: Optional[Sequence[Union[str, Language]]] = None) -> None:
"""Sort audio tracks by bitrate, descriptive, and optionally language."""
if not self.audio:
return
# bitrate
self.audio.sort(
key=lambda x: float(x.bitrate or 0.0),
reverse=True
)
# descriptive
self.audio.sort(key=lambda x: str(x.language) if x.descriptive else "")
# language
for language in reversed(by_language or []):
if str(language) == "all":
language = next((x.language for x in self.audio if x.is_original_lang), "")
if not language:
continue
self.audio.sort(key=lambda x: str(x.language))
self.audio.sort(key=lambda x: not is_close_match(language, [x.language]))
def sort_subtitles(self, by_language: Optional[Sequence[Union[str, Language]]] = None) -> None:
"""
Sort subtitle tracks by various track attributes to a common P2P standard.
You may optionally provide a sequence of languages to prioritize to the top.
Section Order:
- by_language groups prioritized to top, and ascending alphabetically
- then rest ascending alphabetically after the prioritized groups
(Each section ascending alphabetically, but separated)
Language Group Order:
- Forced
- Normal
- Hard of Hearing (SDH/CC)
(Least to most captions expected in the subtitle)
"""
if not self.subtitles:
return
# language groups
self.subtitles.sort(key=lambda x: str(x.language))
self.subtitles.sort(key=lambda x: x.sdh or x.cc)
self.subtitles.sort(key=lambda x: x.forced, reverse=True)
# sections
for language in reversed(by_language or []):
if str(language) == "all":
language = next((x.language for x in self.subtitles if x.is_original_lang), "")
if not language:
continue
self.subtitles.sort(key=lambda x: is_close_match(language, [x.language]), reverse=True)
def select_video(self, x: Callable[[Video], bool]) -> None:
self.videos = list(filter(x, self.videos))
def select_audio(self, x: Callable[[Audio], bool]) -> None:
self.audio = list(filter(x, self.audio))
def select_subtitles(self, x: Callable[[Subtitle], bool]) -> None:
self.subtitles = list(filter(x, self.subtitles))
def by_resolutions(self, resolutions: list[int], per_resolution: int = 0) -> None:
# Note: Do not merge these list comprehensions. They must be done separately so the results
# from the 16:9 canvas check is only used if there's no exact height resolution match.
selected = []
for resolution in resolutions:
matches = [ # exact matches
x
for x in self.videos
if x.height == resolution
]
if not matches:
matches = [ # 16:9 canvas matches
x
for x in self.videos
if int(x.width * (9 / 16)) == resolution
]
selected.extend(matches[:per_resolution or None])
self.videos = selected
@staticmethod
def by_language(tracks: list[TrackT], languages: list[str], per_language: int = 0) -> list[TrackT]:
selected = []
for language in languages:
selected.extend([
x
for x in tracks
if closest_supported_match(x.language, [language], LANGUAGE_MAX_DISTANCE)
][:per_language or None])
return selected
def mux(self, title: str, delete: bool = True, progress: Optional[partial] = None) -> tuple[Path, int, list[str]]:
"""
Multiplex all the Tracks into a Matroska Container file.
Parameters:
title: Set the Matroska Container file title. Usually displayed in players
instead of the filename if set.
delete: Delete all track files after multiplexing.
progress: Update a rich progress bar via `completed=...`. This must be the
progress object's update() func, pre-set with task id via functools.partial.
"""
cl = [
"mkvmerge",
"--no-date", # remove dates from the output for security
]
if config.muxing.get("set_title", True):
cl.extend(["--title", title])
for i, vt in enumerate(self.videos):
if not vt.path or not vt.path.exists():
raise ValueError("Video Track must be downloaded before muxing...")
events.emit(events.Types.TRACK_MULTIPLEX, track=vt)
cl.extend([
"--language", f"0:{vt.language}",
"--default-track", f"0:{i == 0}",
"--original-flag", f"0:{vt.is_original_lang}",
"--compression", "0:none", # disable extra compression
"(", str(vt.path), ")"
])
for i, at in enumerate(self.audio):
if not at.path or not at.path.exists():
raise ValueError("Audio Track must be downloaded before muxing...")
events.emit(events.Types.TRACK_MULTIPLEX, track=at)
cl.extend([
"--track-name", f"0:{at.get_track_name() or ''}",
"--language", f"0:{at.language}",
"--default-track", f"0:{i == 0}",
"--visual-impaired-flag", f"0:{at.descriptive}",
"--original-flag", f"0:{at.is_original_lang}",
"--compression", "0:none", # disable extra compression
"(", str(at.path), ")"
])
for st in self.subtitles:
if not st.path or not st.path.exists():
raise ValueError("Text Track must be downloaded before muxing...")
events.emit(events.Types.TRACK_MULTIPLEX, track=st)
default = bool(self.audio and is_close_match(st.language, [self.audio[0].language]) and st.forced)
cl.extend([
"--track-name", f"0:{st.get_track_name() or ''}",
"--language", f"0:{st.language}",
"--sub-charset", "0:UTF-8",
"--forced-track", f"0:{st.forced}",
"--default-track", f"0:{default}",
"--hearing-impaired-flag", f"0:{st.sdh}",
"--original-flag", f"0:{st.is_original_lang}",
"--compression", "0:none", # disable extra compression (probably zlib)
"(", str(st.path), ")"
])
if self.chapters:
chapters_path = config.directories.temp / config.filenames.chapters.format(
title=sanitize_filename(title),
random=self.chapters.id
)
self.chapters.dump(chapters_path, fallback_name=config.chapter_fallback_name)
cl.extend(["--chapter-charset", "UTF-8", "--chapters", str(chapters_path)])
else:
chapters_path = None
for attachment in self.attachments:
if not attachment.path or not attachment.path.exists():
raise ValueError("Attachment File was not found...")
cl.extend([
"--attachment-description", attachment.description or "",
"--attachment-mime-type", attachment.mime_type,
"--attachment-name", attachment.name,
"--attach-file", str(attachment.path.resolve())
])
output_path = (
self.videos[0].path.with_suffix(".muxed.mkv") if self.videos else
self.audio[0].path.with_suffix(".muxed.mka") if self.audio else
self.subtitles[0].path.with_suffix(".muxed.mks") if self.subtitles else
chapters_path.with_suffix(".muxed.mkv") if self.chapters else
None
)
if not output_path:
raise ValueError("No tracks provided, at least one track must be provided.")
# let potential failures go to caller, caller should handle
try:
errors = []
p = subprocess.Popen([
*cl,
"--output", str(output_path),
"--gui-mode"
], text=True, stdout=subprocess.PIPE)
for line in iter(p.stdout.readline, ""):
if line.startswith("#GUI#error") or line.startswith("#GUI#warning"):
errors.append(line)
if "progress" in line:
progress(total=100, completed=int(line.strip()[14:-1]))
return output_path, p.wait(), errors
finally:
if chapters_path:
# regardless of delete param, we delete as it's a file we made during muxing
chapters_path.unlink()
if delete:
for track in self:
track.delete()
__all__ = ("Tracks",)