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from livestreamer.options import Options
SpecialQualityWeights = {
"live": 1080,
"hd": 1080,
"hq": 576,
"hqtest": 576,
"sd": 576,
"sq": 360,
"sqtest": 240,
"iphonehigh": 240,
"iphonelow": 180,
}
def qualityweight(quality):
if quality.endswith("k"):
bitrate = int(quality[:-1])
# These calculations are very rough
if bitrate > 2000:
return bitrate / 3.4
elif bitrate > 1000:
return bitrate / 2.6
else:
return bitrate / 1.7
elif quality.endswith("p"):
return int(quality[:-1])
elif quality in SpecialQualityWeights:
return SpecialQualityWeights[quality]
return 1
class Plugin(object):
"""
A plugin can retrieve stream information from the *url* specified.
"""
options = Options()
def __init__(self, url):
self.url = url
self.logger = self.session.logger.new_module("plugin." + self.module)
@classmethod
def can_handle_url(cls, url):
raise NotImplementedError
@classmethod
def set_option(cls, key, value):
cls.options.set(key, value)
@classmethod
def get_option(cls, key):
return cls.options.get(key)
def get_streams(self):
"""
Retrieves and returns a :class:`dict` containing the streams.
The key is the name of the stream, most commonly the quality.
The value is a :class:`Stream` object.
The stream with key *best* is a reference to the stream most likely
to be of highest quality.
"""
streams = self._get_streams()
best = (0, None)
for name, stream in streams.items():
weight = qualityweight(name)
if weight > best[0]:
best = (weight, stream)
if best[1] is not None:
streams["best"] = best[1]
return streams
def _get_streams(self):
raise NotImplementedError
class PluginError(Exception):
pass
class NoStreamsError(PluginError):
def __init__(self, url):
PluginError.__init__(self, ("No streams found on this URL: {0}").format(url))
class NoPluginError(PluginError):
pass
__all__ = ["Plugin", "PluginError", "NoStreamsError", "NoPluginError"]
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