Kye
1 year ago
parent
89dffeb46c
commit
80467525e2
@ -1,3 +1,160 @@
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"""
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import asyncio
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import os
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import time
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from functools import wraps
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from typing import Union
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"""
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import torch
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from termcolor import colored
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from transformers import AutoModelForSpeechSeq2Seq, AutoProcessor, pipeline
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def async_retry(max_retries=3, exceptions=(Exception,), delay=1):
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"""
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A decorator for adding retry logic to async functions.
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:param max_retries: Maximum number of retries before giving up.
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:param exceptions: A tuple of exceptions to catch and retry on.
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:param delay: Delay between retries.
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"""
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def decorator(func):
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@wraps(func)
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async def wrapper(*args, **kwargs):
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retries = max_retries
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while retries:
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try:
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return await func(*args, **kwargs)
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except exceptions as e:
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retries -= 1
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if retries <= 0:
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raise
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print(f"Retry after exception: {e}, Attempts remaining: {retries}")
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await asyncio.sleep(delay)
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return wrapper
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return decorator
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class DistilWhisperModel:
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"""
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This class encapsulates the Distil-Whisper model for English speech recognition.
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It allows for both synchronous and asynchronous transcription of short and long-form audio.
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Args:
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model_id: The model ID to use. Defaults to "distil-whisper/distil-large-v2".
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Attributes:
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device: The device to use for inference.
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torch_dtype: The torch data type to use for inference.
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model_id: The model ID to use.
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model: The model instance.
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processor: The processor instance.
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Usage:
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model_wrapper = DistilWhisperModel()
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transcription = model_wrapper('path/to/audio.mp3')
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# For async usage
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transcription = asyncio.run(model_wrapper.async_transcribe('path/to/audio.mp3'))
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"""
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def __init__(self, model_id="distil-whisper/distil-large-v2"):
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self.device = "cuda:0" if torch.cuda.is_available() else "cpu"
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self.torch_dtype = torch.float16 if torch.cuda.is_available() else torch.float32
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self.model_id = model_id
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self.model = AutoModelForSpeechSeq2Seq.from_pretrained(
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model_id,
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torch_dtype=self.torch_dtype,
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low_cpu_mem_usage=True,
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use_safetensors=True,
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).to(self.device)
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self.processor = AutoProcessor.from_pretrained(model_id)
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def __call__(self, inputs: Union[str, dict]):
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return self.transcribe(inputs)
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def transcribe(self, inputs: Union[str, dict]):
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"""
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Synchronously transcribe the given audio input using the Distil-Whisper model.
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:param inputs: A string representing the file path or a dict with audio data.
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:return: The transcribed text.
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"""
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pipe = pipeline(
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"automatic-speech-recognition",
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model=self.model,
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tokenizer=self.processor.tokenizer,
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feature_extractor=self.processor.feature_extractor,
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max_new_tokens=128,
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torch_dtype=self.torch_dtype,
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device=self.device,
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)
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return pipe(inputs)["text"]
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@async_retry()
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async def async_transcribe(self, inputs: Union[str, dict]):
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"""
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Asynchronously transcribe the given audio input using the Distil-Whisper model.
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:param inputs: A string representing the file path or a dict with audio data.
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:return: The transcribed text.
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"""
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loop = asyncio.get_event_loop()
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return await loop.run_in_executor(None, self.transcribe, inputs)
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def real_time_transcribe(self, audio_file_path, chunk_duration=5):
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"""
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Simulates real-time transcription of an audio file, processing and printing results
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in chunks with colored output for readability.
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:param audio_file_path: Path to the audio file to be transcribed.
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:param chunk_duration: Duration in seconds of each audio chunk to be processed.
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"""
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if not os.path.isfile(audio_file_path):
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print(colored("The audio file was not found.", "red"))
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return
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# Assuming `chunk_duration` is in seconds and `processor` can handle chunk-wise processing
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try:
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with torch.no_grad():
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# Load the whole audio file, but process and transcribe it in chunks
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audio_input = self.processor.audio_file_to_array(audio_file_path)
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sample_rate = audio_input.sampling_rate
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total_duration = len(audio_input.array) / sample_rate
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chunks = [
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audio_input.array[i : i + sample_rate * chunk_duration]
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for i in range(
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0, len(audio_input.array), sample_rate * chunk_duration
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)
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]
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print(colored("Starting real-time transcription...", "green"))
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for i, chunk in enumerate(chunks):
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# Process the current chunk
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processed_inputs = self.processor(
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chunk,
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sampling_rate=sample_rate,
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return_tensors="pt",
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padding=True,
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)
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processed_inputs = processed_inputs.input_values.to(self.device)
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# Generate transcription for the chunk
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logits = self.model.generate(processed_inputs)
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transcription = self.processor.batch_decode(
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logits, skip_special_tokens=True
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)[0]
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# Print the chunk's transcription
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print(
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colored(f"Chunk {i+1}/{len(chunks)}: ", "yellow")
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+ transcription
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)
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# Wait for the chunk's duration to simulate real-time processing
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time.sleep(chunk_duration)
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except Exception as e:
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print(colored(f"An error occurred during transcription: {e}", "red"))
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