def _is_same_time_delta(self, times1, times2):
# 所用项目非空（都是映射而不是分段）
if all(times1) and all(times2):
# 时间差在允许的范围内
delta = [time1-time2 for time1, time2 in zip(times1, times2)]
if time.is_approx_equal(min(delta), max(delta), Player.timedelta_tolerance):
return True
return False
def normalize(timemap):
"""一般化时间映射表，生成时间偏移表"""
timemap = [item for item in timemap if 1 <= len(item) <= 2]
timedelta = []
for item, next_ in zip_longest(timemap, timemap[1:], fillvalue=[Time(h=100)]):
if len(item) == 2 and item[1] is not None:
timedelta.append({'delta': item[1]-item[0], 'until': next_[0]})
averaged = []
while timedelta:
i = 0
for (i, item), next_ in zip_longest(enumerate(timedelta), timedelta[1:]):
if next_ and not is_approx_equal(item['delta'], next_['delta'], tolerance):
break
average_delta = sum(map(lambda x: x['delta'], timedelta[:i+1]), Time.zero) / (i+1)
if abs(average_delta.ms_time) < tolerance:
average_delta = Time.zero
averaged.append({'delta': average_delta, 'until': timedelta[i]['until']})
timedelta = timedelta[i+1:]
return averaged
def shift(self, timedelta=None, diff_delta_handler=SHIFT_APART):
"""根据时间偏移表 timedelta 平移字幕的时间轴
diff_delta_handler 开始时间与结束时间偏移量不同时的处理方式
"""
self._timedelta = timedelta
if len(timedelta) > 0:
for line in self._subs:
# 确定这条字幕的起止时间对应的偏移量
delta_start = next(x for x in timedelta if line.start < x['until'])['delta']
delta_end = next(x for x in timedelta if line.end < x['until'])['delta']
# 处理起止时间偏移量不同
if not time.is_approx_equal(delta_start, delta_end):
logging.warning("字幕 {} 的开始时间与结束时间平移量不同".format(str(line)))
if diff_delta_handler == SHIFT_FAILED:
raise Exception("开始时间与结束时间平移量不同")
elif diff_delta_handler == SHIFT_APART:
pass
elif diff_delta_handler == SHIFT_BY_START:
delta_end = delta_start
elif diff_delta_handler == SHIFT_BY_END:
delta_start = delta_end
# 平移！
line.start += delta_start
line.end += delta_end
# 处理平移后时间小于 0
is_not_zero_length = line.start != line.end # 对 0 时长的字幕不发出警告
if line.start < Time.zero:
line.start = Time.zero
if is_not_zero_length:
logging.warning("字幕 {} 的开始时间平移后小于0".format(str(line)))
if line.end < Time.zero:
line.end = Time.zero
if is_not_zero_length:
logging.warning("字幕 {} 的结束时间平移后小于0".format(str(line)))
else:
logging.warning("时间偏移表为空")
