Files
WhisperLiveKit/whisperlivekit/simul_whisper/mlx/decoder_state.py

79 lines
2.3 KiB
Python

from dataclasses import dataclass, field
from typing import Any, Dict, List, Optional, Tuple
import mlx.core as mx
import numpy as np
@dataclass
class MLXDecoderState:
"""
mlx kv cache format: List of ((k, v), (cross_k, cross_v)) tuples per layer,
where each element is a tuple of mx.arrays.
"""
kv_cache: Optional[List[Tuple[Tuple[mx.array, mx.array], Tuple[mx.array, mx.array]]]] = None
tokenizer: Any = None
detected_language: Optional[str] = None
reset_tokenizer_to_auto_next_call: bool = False
tokens: List[mx.array] = field(default_factory=list)
initial_tokens: Optional[mx.array] = None
initial_token_length: int = 0
sot_index: int = 0
align_source: Dict[int, List[Tuple[int, int]]] = field(default_factory=dict)
num_align_heads: int = 0
segments: List[np.ndarray] = field(default_factory=list)
context: Any = None
pending_incomplete_tokens: List[int] = field(default_factory=list)
pending_retries: int = 0
global_time_offset: float = 0.0
cumulative_time_offset: float = 0.0
first_timestamp: Optional[float] = None
last_attend_frame: int = 0
speaker: int = -1
log_segments: int = 0
cif_weights: Optional[mx.array] = None
always_fire: bool = False
never_fire: bool = False
suppress_tokens: Optional[Tuple[int, ...]] = None
token_decoder: Any = None
decoder_type: str = "greedy"
inference: Any = None
def clean_cache(self):
self.kv_cache = None
if self.decoder_type == "beam" and self.inference is not None:
self.inference.kv_cache = None
if self.token_decoder is not None:
self.token_decoder.reset()
def reset(self, rewind_threshold: int = 200):
self.last_attend_frame = -rewind_threshold
self.cumulative_time_offset = 0.0
self.pending_incomplete_tokens = []
self.pending_retries = 0
self.log_segments += 1
def full_reset(self, rewind_threshold: int = 200):
"""
Full reset including audio segments and tokens.
Args:
rewind_threshold: Value for resetting last_attend_frame
"""
self.reset(rewind_threshold)
self.segments = []
self.tokens = []
self.kv_cache = None
self.first_timestamp = None