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svtplay-dl/lib/svtplay_dl/utils/stream.py
2024-10-06 19:45:26 +02:00

236 lines
8.2 KiB
Python

import logging
import operator
import re
from operator import itemgetter
from typing import List
from svtplay_dl import error
from svtplay_dl.utils.http import HTTP
# TODO: should be set as the default option in the argument parsing?
DEFAULT_PROTOCOL_PRIO = ["dash", "hls", "http"]
LIVE_PROTOCOL_PRIO = ["hls", "dash", "http"]
DEFAULT_FORMAT_PRIO = ["h264", "h264-51"]
OPERATORS = {
"<": operator.lt,
"<=": operator.le,
">": operator.gt,
">=": operator.ge,
}
def sort_quality(data) -> List:
data = sorted(data, key=lambda x: (x.bitrate, x.name), reverse=True)
datas = []
for i in data:
datas.append([i.bitrate, i.name, i.format, i.resolution, i.language, i.video_role])
return datas
def list_quality(videos):
data = [["Quality:", "Method:", "Codec:", "Resolution:", "Language:", "Role:"]]
data.extend(sort_quality(videos))
for i in range(len(data)):
logging.info(
f"{str(data[i][0]):<10s} {data[i][1].upper():<8s} {data[i][2]:<8s} {data[i][3]:<12s} {data[i][4]:<20s} {data[i][5]:<20s}",
)
def protocol_prio(streams, priolist) -> List:
"""
Given a list of VideoRetriever objects and a prioritized list of
accepted protocols (as strings) (highest priority first), return
a list of VideoRetriever objects that are accepted, and sorted
by bitrate, and then protocol priority.
"""
# Map score's to the reverse of the list's index values
proto_score = dict(zip(priolist, range(len(priolist), 0, -1)))
logging.debug("Protocol priority scores (higher is better): %s", str(proto_score))
# Build a tuple (bitrate, proto_score, stream), and use it
# for sorting.
prioritized = [(s.bitrate, proto_score[s.name], s) for s in streams if s.name in proto_score]
return [x[2] for x in sorted(prioritized, key=itemgetter(0, 1), reverse=True)]
def format_prio(streams, priolist) -> List:
logging.debug("Format priority: %s", str(priolist))
prioritized = [s for s in streams if s.format in priolist]
return prioritized
def language_prio(config, streams) -> List:
if config.get("audio_language"):
language = config.get("audio_language")
prioritized = [s for s in streams if s.language == language]
else:
prioritized = [s for s in streams if s.audio_role == "main"]
return prioritized
def video_role(config, streams) -> List:
if config.get("video_role"):
role = config.get("video_role")
else:
return streams
prioritized = [s for s in streams if s.video_role == role]
return prioritized
def subtitle_filter(subtitles) -> List:
languages = []
subs = []
if not subtitles:
return subs
preferred = subtitles[0].config.get("subtitle_preferred")
all_subs = subtitles[0].config.get("get_all_subtitles")
for sub in subtitles:
if sub.subfix not in languages:
if all_subs:
if sub.subfix is None:
continue
subs.append(sub)
languages.append(sub.subfix)
else:
if preferred is None:
subs.append(sub)
languages.append(sub.subfix)
if preferred and sub.subfix == preferred:
subs.append(sub)
languages.append(sub.subfix)
return subs
def subtitle_decider(stream, subtitles):
if subtitles and (stream.config.get("merge_subtitle") or stream.config.get("subtitle") or stream.config.get("get_all_subtitles")):
subtitles = subtitle_filter(subtitles)
if stream.config.get("get_all_subtitles"):
for sub in subtitles:
if sub.subfix:
if stream.config.get("get_url"):
print(sub.url)
else:
sub.download()
else:
if stream.config.get("get_url"):
print(subtitles[0].url)
else:
subtitles[0].download()
return stream.config.get("merge_subtitle")
return False
def resolution(streams, resolutions: List) -> List:
videos = []
for stream in streams:
for resolution in resolutions:
match = re.match(r"(?P<op><=|>=|<|>)?(?P<res>[\d+]+)", resolution)
op, res = match.group("op", "res")
if op:
op = OPERATORS.get(op, operator.eq)
if op(int(stream.resolution.split("x")[1]), int(res)):
videos.append(stream)
else:
if stream.resolution.find("x") > 0 and stream.resolution.split("x")[1] == resolution:
videos.append(stream)
return videos
def select_quality(config, streams):
high = 0
if isinstance(config.get("quality"), str):
try:
quality = int(config.get("quality").split("-")[0])
if len(config.get("quality").split("-")) > 1:
high = int(config.get("quality").split("-")[1])
except ValueError:
raise error.UIException("Requested quality is invalid. use a number or range lowerNumber-higherNumber")
else:
quality = config.get("quality")
try:
optq = int(quality)
except ValueError:
raise error.UIException("Requested quality needs to be a number")
try:
optf = int(config.get("flexibleq"))
except ValueError:
raise error.UIException("Flexible-quality needs to be a number")
if optf == 0 and high:
optf = (high - quality) / 2
optq = quality + (high - quality) / 2
if config.get("format_preferred"):
form_prio = config.get("format_preferred").split(",")
else:
form_prio = DEFAULT_FORMAT_PRIO
streams = format_prio(streams, form_prio)
streams = video_role(config, streams)
if not streams:
raise error.UIException(f"Can't find any streams with that video role {config.get('video_role')}")
streams = language_prio(config, streams)
if not streams:
raise error.UIException(f"Can't find any streams with that audio language {config.get('audio_language')}")
if config.get("resolution"):
resolutions = config.get("resolution").split(",")
streams = resolution(streams, resolutions)
if not streams:
raise error.UIException(f"Can't find any streams with that video resolution {config.get('resolution')}")
# Extract protocol prio, in the form of "hls,http",
# we want it as a list
if config.get("stream_prio"):
proto_prio = config.get("stream_prio").split(",")
elif config.get("live") or streams[0].config.get("live"):
proto_prio = LIVE_PROTOCOL_PRIO
else:
proto_prio = DEFAULT_PROTOCOL_PRIO
# Filter away any unwanted protocols, and prioritize
# based on --stream-priority.
streams = protocol_prio(streams, proto_prio)
if len(streams) == 0:
raise error.NoRequestedProtocols(requested=proto_prio, found=list({s.name for s in streams}))
# Build a dict indexed by bitrate, where each value
# is the stream with the highest priority protocol.
stream_hash = {}
for s in streams:
if s.bitrate not in stream_hash:
stream_hash[s.bitrate] = s
avail = sorted(stream_hash.keys(), reverse=True)
# wanted_lim is a two element tuple defines lower/upper bounds
# (inclusive). By default, we want only the best for you
# (literally!).
wanted_lim = (avail[0],) * 2
if optq:
wanted_lim = (optq - optf, optq + optf)
# wanted is the filtered list of available streams, having
# a bandwidth within the wanted_lim range.
wanted = [a for a in avail if a >= wanted_lim[0] and a <= wanted_lim[1]]
# If none remains, the bitrate filtering was too tight.
if len(wanted) == 0:
raise error.UIException("Can't find that quality. Try a different one listed in --list-quality or try --flexible-quality")
http = HTTP(config)
# Test if the wanted stream is available. If not try with the second best and so on.
for w in wanted:
res = http.get(stream_hash[w].url, cookies=stream_hash[w].kwargs.get("cookies", None))
if res is not None and res.status_code < 404:
return stream_hash[w]
raise error.UIException("Streams not available to download.")