mirror of
https://github.com/QuentinFuxa/WhisperLiveKit.git
synced 2026-03-07 22:33:36 +00:00
263 lines
7.9 KiB
Python
263 lines
7.9 KiB
Python
from dataclasses import dataclass, field
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from typing import Optional, Any, List
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from datetime import timedelta
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PUNCTUATION_MARKS = {'.', '!', '?', '。', '！', '？'}
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def format_time(seconds: float) -> str:
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"""Format seconds as HH:MM:SS."""
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return str(timedelta(seconds=int(seconds)))
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@dataclass
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class Timed:
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start: Optional[float] = 0
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end: Optional[float] = 0
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@dataclass
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class TimedText(Timed):
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text: Optional[str] = ''
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speaker: Optional[int] = -1
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detected_language: Optional[str] = None
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def is_punctuation(self):
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return self.text.strip() in PUNCTUATION_MARKS
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def overlaps_with(self, other: 'TimedText') -> bool:
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return not (self.end <= other.start or other.end <= self.start)
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def is_within(self, other: 'TimedText') -> bool:
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return other.contains_timespan(self)
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def duration(self) -> float:
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return self.end - self.start
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def contains_time(self, time: float) -> bool:
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return self.start <= time <= self.end
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def contains_timespan(self, other: 'TimedText') -> bool:
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return self.start <= other.start and self.end >= other.end
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def __bool__(self):
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return bool(self.text)
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@dataclass()
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class ASRToken(TimedText):
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corrected_speaker: Optional[int] = -1
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validated_speaker: bool = False
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validated_text: bool = False
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validated_language: bool = False
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def with_offset(self, offset: float) -> "ASRToken":
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"""Return a new token with the time offset added."""
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return ASRToken(self.start + offset, self.end + offset, self.text, self.speaker, detected_language=self.detected_language)
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@dataclass
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class Sentence(TimedText):
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pass
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@dataclass
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class Transcript(TimedText):
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"""
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represents a concatenation of several ASRToken
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"""
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@classmethod
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def from_tokens(
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cls,
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tokens: List[ASRToken],
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sep: Optional[str] = None,
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offset: float = 0
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) -> "Transcript":
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sep = sep if sep is not None else ' '
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text = sep.join(token.text for token in tokens)
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if tokens:
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start = offset + tokens[0].start
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end = offset + tokens[-1].end
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else:
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start = None
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end = None
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return cls(start, end, text)
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@dataclass
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class SpeakerSegment(Timed):
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"""Represents a segment of audio attributed to a specific speaker.
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No text nor probability is associated with this segment.
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"""
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speaker: Optional[int] = -1
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pass
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@dataclass
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class Translation(TimedText):
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pass
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def approximate_cut_at(self, cut_time):
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"""
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Each word in text is considered to be of duration (end-start)/len(words in text)
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"""
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if not self.text or not self.contains_time(cut_time):
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return self, None
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words = self.text.split()
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num_words = len(words)
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if num_words == 0:
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return self, None
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duration_per_word = self.duration() / num_words
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cut_word_index = int((cut_time - self.start) / duration_per_word)
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if cut_word_index >= num_words:
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cut_word_index = num_words -1
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text0 = " ".join(words[:cut_word_index])
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text1 = " ".join(words[cut_word_index:])
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segment0 = Translation(start=self.start, end=cut_time, text=text0)
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segment1 = Translation(start=cut_time, end=self.end, text=text1)
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return segment0, segment1
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@dataclass
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class Silence():
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start: Optional[float] = None
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end: Optional[float] = None
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duration: Optional[float] = None
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is_starting: bool = False
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has_ended: bool = False
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def compute_duration(self) -> float:
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if self.start is None or self.end is None:
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return None
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self.duration = self.end - self.start
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@dataclass
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class Line(TimedText):
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translation: str = ''
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def to_dict(self):
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_dict = {
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'speaker': int(self.speaker) if self.speaker != -1 else 1,
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'text': self.text,
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'start': format_time(self.start),
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'end': format_time(self.end),
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}
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if self.translation:
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_dict['translation'] = self.translation
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if self.detected_language:
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_dict['detected_language'] = self.detected_language
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return _dict
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def build_from_tokens(self, tokens: List[ASRToken]):
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self.text = ''.join([token.text for token in tokens])
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self.start = tokens[0].start
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self.end = tokens[-1].end
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self.speaker = 1
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return self
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def is_silent(self) -> bool:
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return self.speaker == -2
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class SilentLine(Line):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.speaker = -2
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self.text = ''
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@dataclass
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class FrontData():
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status: str = ''
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error: str = ''
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lines: list[Line] = field(default_factory=list)
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buffer_transcription: str = ''
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buffer_diarization: str = ''
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buffer_translation: str = ''
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remaining_time_transcription: float = 0.
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remaining_time_diarization: float = 0.
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def to_dict(self):
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_dict = {
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'status': self.status,
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'lines': [line.to_dict() for line in self.lines if (line.text or line.speaker == -2)],
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'buffer_transcription': self.buffer_transcription,
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'buffer_diarization': self.buffer_diarization,
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'buffer_translation': self.buffer_translation,
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'remaining_time_transcription': self.remaining_time_transcription,
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'remaining_time_diarization': self.remaining_time_diarization,
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}
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if self.error:
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_dict['error'] = self.error
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return _dict
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@dataclass
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class PunctuationSegment():
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"""Represents a segment of text between punctuation marks."""
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start: Optional[float]
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end: Optional[float]
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token_index_start: int
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token_index_end: int
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punctuation_token_index: int
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punctuation_token: ASRToken
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@classmethod
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def from_token_range(
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cls,
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tokens: List[ASRToken],
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token_index_start: int,
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token_index_end: int,
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punctuation_token_index: int
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) -> "PunctuationSegment":
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"""Create a PunctuationSegment from a range of tokens ending at a punctuation mark."""
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if not tokens or token_index_start < 0 or token_index_end >= len(tokens):
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raise ValueError("Invalid token indices")
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start_token = tokens[token_index_start]
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end_token = tokens[token_index_end]
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punctuation_token = tokens[punctuation_token_index]
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# Build text from tokens in the segment
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segment_tokens = tokens[token_index_start:token_index_end + 1]
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text = ''.join(token.text for token in segment_tokens)
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return cls(
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start=start_token.start,
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end=end_token.end,
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text=text,
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token_index_start=token_index_start,
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token_index_end=token_index_end,
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punctuation_token_index=punctuation_token_index,
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punctuation_token=punctuation_token
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)
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@dataclass
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class ChangeSpeaker:
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speaker: int
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start: int
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@dataclass
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class State():
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tokens: list = field(default_factory=list)
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last_validated_token: int = 0
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last_speaker: int = 1
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last_punctuation_index: Optional[int] = None
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translation_validated_segments: list = field(default_factory=list)
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buffer_translation: str = field(default_factory=Transcript)
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buffer_transcription: str = field(default_factory=Transcript)
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diarization_segments: list = field(default_factory=list)
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end_buffer: float = 0.0
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end_attributed_speaker: float = 0.0
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remaining_time_transcription: float = 0.0
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remaining_time_diarization: float = 0.0
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@dataclass
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class StateLight():
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new_tokens: list = field(default_factory=list)
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new_translation: list = field(default_factory=list)
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new_diarization: list = field(default_factory=list)
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new_tokens_buffer: list = field(default_factory=list) #only when local agreement |