import os import torch from typing import List import whisper import gradio as gr from abc import ABC, abstractmethod from typing import BinaryIO, Union, Tuple, List import numpy as np from datetime import datetime from modules.subtitle_manager import get_srt, get_vtt, get_txt, write_file, safe_filename from modules.youtube_manager import get_ytdata, get_ytaudio from modules.whisper_parameter import * class WhisperBase(ABC): def __init__(self, model_dir: str): self.model = None self.current_model_size = None self.model_dir = model_dir os.makedirs(self.model_dir, exist_ok=True) self.available_models = whisper.available_models() self.available_langs = sorted(list(whisper.tokenizer.LANGUAGES.values())) self.translatable_models = ["large", "large-v1", "large-v2", "large-v3"] self.device = self.get_device() self.available_compute_types = ["float16", "float32"] self.current_compute_type = "float16" if self.device == "cuda" else "float32" @abstractmethod def transcribe(self, audio: Union[str, BinaryIO, np.ndarray], progress: gr.Progress, *whisper_params, ): pass @abstractmethod def update_model(self, model_size: str, compute_type: str, progress: gr.Progress ): pass def transcribe_file(self, files: list, file_format: str, add_timestamp: bool, progress=gr.Progress(), *whisper_params, ) -> list: """ Write subtitle file from Files Parameters ---------- files: list List of files to transcribe from gr.Files() file_format: str Subtitle File format to write from gr.Dropdown(). Supported format: [SRT, WebVTT, txt] add_timestamp: bool Boolean value from gr.Checkbox() that determines whether to add a timestamp at the end of the subtitle filename. progress: gr.Progress Indicator to show progress directly in gradio. *whisper_params: tuple Gradio components related to Whisper. see whisper_data_class.py for details. Returns ---------- result_str: Result of transcription to return to gr.Textbox() result_file_path: Output file path to return to gr.Files() """ try: files_info = {} for file in files: transcribed_segments, time_for_task = self.transcribe( file.name, progress, *whisper_params, ) file_name, file_ext = os.path.splitext(os.path.basename(file.name)) file_name = safe_filename(file_name) subtitle, file_path = self.generate_and_write_file( file_name=file_name, transcribed_segments=transcribed_segments, add_timestamp=add_timestamp, file_format=file_format ) files_info[file_name] = {"subtitle": subtitle, "time_for_task": time_for_task, "path": file_path} total_result = '' total_time = 0 for file_name, info in files_info.items(): total_result += '------------------------------------\n' total_result += f'{file_name}\n\n' total_result += f'{info["subtitle"]}' total_time += info["time_for_task"] result_str = f"Done in {self.format_time(total_time)}! Subtitle is in the outputs folder.\n\n{total_result}" result_file_path = [info['path'] for info in files_info.values()] return [result_str, result_file_path] except Exception as e: print(f"Error transcribing file: {e}") finally: self.release_cuda_memory() if not files: self.remove_input_files([file.name for file in files]) def transcribe_mic(self, mic_audio: str, file_format: str, progress=gr.Progress(), *whisper_params, ) -> list: """ Write subtitle file from microphone Parameters ---------- mic_audio: str Audio file path from gr.Microphone() file_format: str Subtitle File format to write from gr.Dropdown(). Supported format: [SRT, WebVTT, txt] progress: gr.Progress Indicator to show progress directly in gradio. *whisper_params: tuple Gradio components related to Whisper. see whisper_data_class.py for details. Returns ---------- result_str: Result of transcription to return to gr.Textbox() result_file_path: Output file path to return to gr.Files() """ try: progress(0, desc="Loading Audio..") transcribed_segments, time_for_task = self.transcribe( mic_audio, progress, *whisper_params, ) progress(1, desc="Completed!") subtitle, result_file_path = self.generate_and_write_file( file_name="Mic", transcribed_segments=transcribed_segments, add_timestamp=True, file_format=file_format ) result_str = f"Done in {self.format_time(time_for_task)}! Subtitle file is in the outputs folder.\n\n{subtitle}" return [result_str, result_file_path] except Exception as e: print(f"Error transcribing file: {e}") finally: self.release_cuda_memory() self.remove_input_files([mic_audio]) def transcribe_youtube(self, youtube_link: str, file_format: str, add_timestamp: bool, progress=gr.Progress(), *whisper_params, ) -> list: """ Write subtitle file from Youtube Parameters ---------- youtube_link: str URL of the Youtube video to transcribe from gr.Textbox() file_format: str Subtitle File format to write from gr.Dropdown(). Supported format: [SRT, WebVTT, txt] add_timestamp: bool Boolean value from gr.Checkbox() that determines whether to add a timestamp at the end of the filename. progress: gr.Progress Indicator to show progress directly in gradio. *whisper_params: tuple Gradio components related to Whisper. see whisper_data_class.py for details. Returns ---------- result_str: Result of transcription to return to gr.Textbox() result_file_path: Output file path to return to gr.Files() """ try: progress(0, desc="Loading Audio from Youtube..") yt = get_ytdata(youtube_link) audio = get_ytaudio(yt) transcribed_segments, time_for_task = self.transcribe( audio, progress, *whisper_params, ) progress(1, desc="Completed!") file_name = safe_filename(yt.title) subtitle, result_file_path = self.generate_and_write_file( file_name=file_name, transcribed_segments=transcribed_segments, add_timestamp=add_timestamp, file_format=file_format ) result_str = f"Done in {self.format_time(time_for_task)}! Subtitle file is in the outputs folder.\n\n{subtitle}" return [result_str, result_file_path] except Exception as e: print(f"Error transcribing file: {e}") finally: try: if 'yt' not in locals(): yt = get_ytdata(youtube_link) file_path = get_ytaudio(yt) else: file_path = get_ytaudio(yt) self.release_cuda_memory() self.remove_input_files([file_path]) except Exception as cleanup_error: pass @staticmethod def generate_and_write_file(file_name: str, transcribed_segments: list, add_timestamp: bool, file_format: str, ) -> str: """ Writes subtitle file Parameters ---------- file_name: str Output file name transcribed_segments: list Text segments transcribed from audio add_timestamp: bool Determines whether to add a timestamp to the end of the filename. file_format: str File format to write. Supported formats: [SRT, WebVTT, txt] Returns ---------- content: str Result of the transcription output_path: str output file path """ timestamp = datetime.now().strftime("%m%d%H%M%S") if add_timestamp: output_path = os.path.join("outputs", f"{file_name}-{timestamp}") else: output_path = os.path.join("outputs", f"{file_name}") if file_format == "SRT": content = get_srt(transcribed_segments) output_path += '.srt' write_file(content, output_path) elif file_format == "WebVTT": content = get_vtt(transcribed_segments) output_path += '.vtt' write_file(content, output_path) elif file_format == "txt": content = get_txt(transcribed_segments) output_path += '.txt' write_file(content, output_path) return content, output_path @staticmethod def format_time(elapsed_time: float) -> str: """ Get {hours} {minutes} {seconds} time format string Parameters ---------- elapsed_time: str Elapsed time for transcription Returns ---------- Time format string """ hours, rem = divmod(elapsed_time, 3600) minutes, seconds = divmod(rem, 60) time_str = "" if hours: time_str += f"{hours} hours " if minutes: time_str += f"{minutes} minutes " seconds = round(seconds) time_str += f"{seconds} seconds" return time_str.strip() @staticmethod def get_device(): if torch.cuda.is_available(): return "cuda" elif torch.backends.mps.is_available(): return "mps" else: return "cpu" @staticmethod def release_cuda_memory(): if torch.cuda.is_available(): torch.cuda.empty_cache() torch.cuda.reset_max_memory_allocated() @staticmethod def remove_input_files(file_paths: List[str]): if not file_paths: return for file_path in file_paths: if file_path and os.path.exists(file_path): os.remove(file_path)