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bazarr/libs/ffsubsync/generic_subtitles.py

147 lines
4.4 KiB

# -*- coding: utf-8 -*-
import copy
from datetime import timedelta
import logging
import os
import pysubs2
import srt
import six
import sys
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
class SubsMixin(object):
def __init__(self, subs=None):
self.subs_ = subs
def set_encoding(self, encoding):
self.subs_.set_encoding(encoding)
return self
class GenericSubtitle(object):
def __init__(self, start, end, inner):
self.start = start
self.end = end
self.inner = inner
def __eq__(self, other):
eq = True
eq = eq and self.start == other.start
eq = eq and self.end == other.end
eq = eq and self.inner == other.inner
return eq
def resolve_inner_timestamps(self):
ret = copy.deepcopy(self.inner)
if isinstance(self.inner, srt.Subtitle):
ret.start = self.start
ret.end = self.end
elif isinstance(self.inner, pysubs2.SSAEvent):
ret.start = pysubs2.make_time(s=self.start.total_seconds())
ret.end = pysubs2.make_time(s=self.end.total_seconds())
else:
raise NotImplementedError('unsupported subtitle type: %s' % type(self.inner))
return ret
def merge_with(self, other):
assert isinstance(self.inner, type(other.inner))
inner_merged = copy.deepcopy(self.inner)
if isinstance(self.inner, srt.Subtitle):
inner_merged.content = u'{}\n{}'.format(inner_merged.content, other.inner.content)
return self.__class__(
self.start,
self.end,
inner_merged
)
else:
raise NotImplementedError('unsupported subtitle type: %s' % type(self.inner))
@classmethod
def wrap_inner_subtitle(cls, sub):
if isinstance(sub, srt.Subtitle):
return cls(sub.start, sub.end, sub)
elif isinstance(sub, pysubs2.SSAEvent):
return cls(
timedelta(milliseconds=sub.start),
timedelta(milliseconds=sub.end),
sub
)
else:
raise NotImplementedError('unsupported subtitle type: %s' % type(sub))
class GenericSubtitlesFile(object):
def __init__(self, subs, *args, **kwargs):
sub_format = kwargs.pop('sub_format', None)
if sub_format is None:
raise ValueError('format must be specified')
encoding = kwargs.pop('encoding', None)
if encoding is None:
raise ValueError('encoding must be specified')
self.subs_ = subs
self._sub_format = sub_format
self._encoding = encoding
def set_encoding(self, encoding):
if encoding != 'same':
self._encoding = encoding
return self
def __len__(self):
return len(self.subs_)
def __getitem__(self, item):
return self.subs_[item]
@property
def sub_format(self):
return self._sub_format
@property
def encoding(self):
return self._encoding
def gen_raw_resolved_subs(self):
for sub in self.subs_:
yield sub.resolve_inner_timestamps()
def offset(self, td):
offset_subs = []
for sub in self.subs_:
offset_subs.append(
GenericSubtitle(sub.start + td, sub.end + td, sub.inner)
)
return GenericSubtitlesFile(
offset_subs,
sub_format=self.sub_format,
encoding=self.encoding
)
def write_file(self, fname):
# TODO: converter to go between self.subs_format and out_format
if fname is None:
out_format = self._sub_format
else:
out_format = os.path.splitext(fname)[-1][1:]
subs = list(self.gen_raw_resolved_subs())
if out_format == 'srt':
to_write = srt.compose(subs)
elif out_format in ('ssa', 'ass'):
ssaf = pysubs2.SSAFile()
ssaf.events = subs
to_write = ssaf.to_string(out_format)
else:
raise NotImplementedError('unsupported output format: %s' % out_format)
to_write = to_write.encode(self.encoding)
if six.PY3:
with open(fname or sys.stdout.fileno(), 'wb') as f:
f.write(to_write)
else:
with (fname and open(fname, 'wb')) or sys.stdout as f:
f.write(to_write)