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svtplay-dl/lib/svtplay_dl/utils/__init__.py
Johan Andersson 0fe57c52a2 select_quality: support for range to -q
this is similar to -Q  but instead its -q 2000,3000  . it will choose one in between
fixes: #372
2016-04-26 23:48:12 +02:00

248 lines
7.6 KiB
Python

# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil: coding: utf-8 -*-
# ex:ts=4:sw=4:sts=4:et:fenc=utf-8
from __future__ import absolute_import
import sys
import logging
import re
import unicodedata
import platform
from operator import itemgetter
try:
import HTMLParser
except ImportError:
# pylint: disable-msg=import-error
import html.parser as HTMLParser
try:
from requests import Session
except ImportError:
print("You need to install python-requests to use this script")
sys.exit(3)
from svtplay_dl import error
is_py2 = (sys.version_info[0] == 2)
is_py3 = (sys.version_info[0] == 3)
is_py2_old = (sys.version_info < (2, 7))
# Used for UA spoofing in get_http_data()
FIREFOX_UA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.3'
# TODO: should be set as the default option in the argument parsing?
DEFAULT_PROTOCOL_PRIO = ["dash", "hls", "hds", "http", "rtmp"]
log = logging.getLogger('svtplay_dl')
progress_stream = sys.stderr
class HTTP(Session):
def __init__(self, options, *args, **kwargs):
Session.__init__(self, *args, **kwargs)
self.verify = options.ssl_verify
if options.http_headers:
self.headers.update(self.split_header(options.http_headers))
self.headers.update({"User-Agent": FIREFOX_UA})
def check_redirect(self, url):
return self.get(url, stream=True).url
def request(self, method, url, *args, **kwargs):
headers = kwargs.pop("headers", None)
if headers:
for i in headers.keys():
self.headers[i] = headers[i]
log.debug("HTTP getting %r", url)
res = Session.request(self, method, url, verify=self.verify, *args, **kwargs)
return res
def split_header(self, headers):
return dict(x.split('=') for x in headers.split(';'))
def sort_quality(data):
data = sorted(data, key=lambda x: (x.bitrate, x.name()), reverse=True)
datas = []
for i in data:
datas.append([i.bitrate, i.name()])
return datas
def list_quality(videos):
data = sort_quality(videos)
log.info("Quality\tMethod")
for i in data:
log.info("%s\t%s", i[0], i[1].upper())
def protocol_prio(streams, priolist):
"""
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)))
log.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 select_quality(options, streams):
high = 0
if isinstance(options.quality, str):
quality = int(options.quality.split(",")[0])
if len(options.quality.split(",")) > 1:
high = int(options.quality.split(",")[1])
else:
quality = options.quality
try:
optq = int(quality)
except ValueError:
raise error.UIException("Requested quality needs to be a number")
try:
optf = int(options.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
# Extract protocol prio, in the form of "hls,hds,http,rtmp",
# we want it as a list
proto_prio = DEFAULT_PROTOCOL_PRIO
if options.stream_prio:
proto_prio = options.stream_prio.split(',')
# 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(set([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 not s.bitrate 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:
data = sort_quality(streams)
quality = ", ".join("%s (%s)" % (str(x), str(y)) for x, y in data)
raise error.UIException("Can't find that quality. Try one of: %s (or "
"try --flexible-quality)" % quality)
return stream_hash[wanted[0]]
def ensure_unicode(s):
"""
Ensure string is a unicode string. If it isn't it assumed it is
utf-8 and decodes it to a unicode string.
"""
if (is_py2 and isinstance(s, str)) or (is_py3 and isinstance(s, bytes)):
s = s.decode('utf-8', 'replace')
return s
def decode_html_entities(s):
"""
Replaces html entities with the character they represent.
>>> print(decode_html_entities("&lt;3 &amp;"))
<3 &
"""
parser = HTMLParser.HTMLParser()
def unesc(m):
return parser.unescape(m.group())
return re.sub(r'(&[^;]+;)', unesc, ensure_unicode(s))
def filenamify(title):
"""
Convert a string to something suitable as a file name. E.g.
Matlagning del 1 av 10 - Räksmörgås | SVT Play
-> matlagning.del.1.av.10.-.raksmorgas.svt.play
"""
# ensure it is unicode
title = ensure_unicode(title)
# NFD decomposes chars into base char and diacritical mark, which
# means that we will get base char when we strip out non-ascii.
title = unicodedata.normalize('NFD', title)
# Convert to lowercase
# Drop any non ascii letters/digits
# Drop any leading/trailing whitespace that may have appeared
title = re.sub(r'[^a-z0-9 .-]', '', title.lower().strip())
# Replace whitespace with dot
title = re.sub(r'\s+', '.', title)
title = re.sub(r'\.-\.', '-', title)
return title
def download_thumbnail(options, url):
data = Session.get(url).content
filename = re.search(r"(.*)\.[a-z0-9]{2,3}$", options.output)
tbn = "%s.tbn" % filename.group(1)
log.info("Thumbnail: %s", tbn)
fd = open(tbn, "wb")
fd.write(data)
fd.close()
def which(program):
import os
if platform.system() == "Windows":
program = "{0}.exe".format(program)
def is_exe(fpath):
return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
fpath, fname = os.path.split(program)
if fpath:
if is_exe(program):
return program
else:
for path in os.environ["PATH"].split(os.pathsep):
path = path.strip('"')
exe_file = os.path.join(path, program)
if is_exe(exe_file):
return exe_file
if os.path.isfile(program):
exe_file = os.path.join(os.getcwd(), program)
if is_exe(exe_file):
return exe_file
return None