mirror of
https://github.com/jamiepine/voicebox.git
synced 2026-09-20 07:10:40 -07:00
ADDED MLX FOR SUPER FAST GENERATIONS ON APPLE SILICON
- Added support for MLX backend on Apple Silicon, enabling optimized performance for TTS and STT tasks. - Updated release workflow to include MLX-specific dependencies and configurations for macOS platforms. - Refactored backend code to dynamically select between MLX and PyTorch based on the runtime environment. - Enhanced model loading and inference logic to accommodate backend-specific requirements, including updated model IDs and hidden imports. - Improved health check and model status reporting to reflect the active backend type. - Streamlined caching mechanisms to support both backend types, ensuring compatibility and performance.
This commit is contained in:
Jamie Pine
+20
-355
@@ -1,372 +1,37 @@
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"""
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TTS inference module using Qwen3-TTS.
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TTS inference module - delegates to backend abstraction layer.
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"""
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from typing import Optional, List, Tuple
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import asyncio
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import torch
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from typing import Optional
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import numpy as np
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import io
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import soundfile as sf
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from pathlib import Path
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from .utils.cache import get_cache_key, get_cached_voice_prompt, cache_voice_prompt
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from .utils.audio import normalize_audio
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from .utils.progress import get_progress_manager
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from .utils.hf_progress import HFProgressTracker, create_hf_progress_callback
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from .utils.tasks import get_task_manager
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from . import config
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from .backends import get_tts_backend, TTSBackend
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class TTSModel:
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"""Manages Qwen3-TTS model loading and inference."""
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def get_tts_model() -> TTSBackend:
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"""
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Get TTS backend instance (MLX or PyTorch based on platform).
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def __init__(self, model_size: str = "1.7B"):
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self.model = None
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self.model_size = model_size
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self.device = self._get_device()
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self._current_model_size = None
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def _get_device(self) -> str:
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"""Get the best available device."""
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if torch.cuda.is_available():
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return "cuda"
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elif hasattr(torch.backends, 'mps') and torch.backends.mps.is_available():
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# MPS can have issues, use CPU for stability
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return "cpu"
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return "cpu"
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def is_loaded(self) -> bool:
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"""Check if model is loaded."""
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return self.model is not None
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def _get_model_path(self, model_size: str) -> str:
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"""
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Get the model path, downloading from HuggingFace Hub if needed.
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Args:
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model_size: Model size (1.7B or 0.6B)
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Returns:
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Path to model (either local or HuggingFace Hub ID)
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"""
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# HuggingFace Hub model IDs
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hf_model_map = {
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"1.7B": "Qwen/Qwen3-TTS-12Hz-1.7B-Base",
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"0.6B": "Qwen/Qwen3-TTS-12Hz-0.6B-Base",
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}
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# Local directory names (for backwards compatibility)
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local_model_map = {
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"1.7B": "Qwen--Qwen3-TTS-12Hz-1.7B-Base",
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"0.6B": "Qwen--Qwen3-TTS-12Hz-0.6B-Base",
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}
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if model_size not in hf_model_map:
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raise ValueError(f"Unknown model size: {model_size}")
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# Check if model exists locally (backwards compatibility)
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local_path = config.get_models_dir() / local_model_map[model_size]
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if local_path.exists():
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print(f"Found local model at {local_path}")
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return str(local_path)
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# Use HuggingFace Hub model ID (will auto-download)
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hf_model_id = hf_model_map[model_size]
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print(f"Will download model from HuggingFace Hub: {hf_model_id}")
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return hf_model_id
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def load_model(self, model_size: Optional[str] = None):
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"""
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Lazy load the TTS model with automatic downloading from HuggingFace Hub.
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The model will be automatically downloaded on first use and cached locally.
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This works similar to how Whisper models are loaded.
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Args:
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model_size: Model size to load (1.7B or 0.6B)
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"""
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if model_size is None:
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model_size = self.model_size
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# If already loaded with correct size, return
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if self.model is not None and self._current_model_size == model_size:
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return
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# Unload existing model if different size requested
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if self.model is not None and self._current_model_size != model_size:
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self.unload_model()
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try:
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from qwen_tts import Qwen3TTSModel
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# Get model path (local or HuggingFace Hub ID)
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model_path = self._get_model_path(model_size)
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# Set up progress tracking
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progress_manager = get_progress_manager()
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model_name = f"qwen-tts-{model_size}"
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# Check if model is being downloaded from HuggingFace Hub
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if model_path.startswith("Qwen/"):
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print(f"Loading TTS model {model_size} on {self.device}...")
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# Start tracking download task
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task_manager = get_task_manager()
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task_manager.start_download(model_name)
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# Initialize progress state to show download has started
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progress_manager.update_progress(
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model_name=model_name,
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current=0,
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total=1, # Set to 1 initially, will be updated by callback
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filename="",
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status="downloading",
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)
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# Set up progress callback
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progress_callback = create_hf_progress_callback(model_name, progress_manager)
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tracker = HFProgressTracker(progress_callback)
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# Use progress tracker during download
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with tracker.patch_download():
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# Load the model - downloads will happen automatically with progress tracking
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self.model = Qwen3TTSModel.from_pretrained(
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model_path,
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device_map=self.device,
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torch_dtype=torch.float32 if self.device == "cpu" else torch.bfloat16,
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)
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# Mark as complete
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progress_manager.mark_complete(model_name)
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task_manager.complete_download(model_name)
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else:
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# Local model, no download needed
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print(f"Loading TTS model {model_size} on {self.device}...")
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self.model = Qwen3TTSModel.from_pretrained(
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model_path,
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device_map=self.device,
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torch_dtype=torch.float32 if self.device == "cpu" else torch.bfloat16,
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)
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self._current_model_size = model_size
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self.model_size = model_size
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print(f"TTS model {model_size} loaded successfully")
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except ImportError as e:
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print(f"Error: qwen_tts package not found. Install with: pip install git+https://github.com/QwenLM/Qwen3-TTS.git")
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progress_manager = get_progress_manager()
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task_manager = get_task_manager()
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model_name = f"qwen-tts-{model_size}"
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progress_manager.mark_error(model_name, str(e))
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task_manager.error_download(model_name, str(e))
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raise
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except Exception as e:
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print(f"Error loading TTS model: {e}")
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print(f"Tip: The model will be automatically downloaded from HuggingFace Hub on first use.")
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progress_manager = get_progress_manager()
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task_manager = get_task_manager()
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model_name = f"qwen-tts-{model_size}"
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progress_manager.mark_error(model_name, str(e))
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task_manager.error_download(model_name, str(e))
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raise
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async def load_model_async(self, model_size: Optional[str] = None):
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"""
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Async version of load_model that runs in thread pool.
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This prevents blocking the event loop during model loading.
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"""
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if model_size is None:
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model_size = self.model_size
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# If already loaded with correct size, return immediately
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if self.model is not None and self._current_model_size == model_size:
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return
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# Run the blocking load operation in a thread pool
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await asyncio.to_thread(self.load_model, model_size)
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def unload_model(self):
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"""Unload the model to free memory."""
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if self.model is not None:
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del self.model
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self.model = None
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self._current_model_size = None
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if torch.cuda.is_available():
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torch.cuda.empty_cache()
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print("TTS model unloaded")
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async def create_voice_prompt(
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self,
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audio_path: str,
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reference_text: str,
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use_cache: bool = True,
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) -> Tuple[dict, bool]:
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"""
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Create voice prompt from reference audio.
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Args:
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audio_path: Path to reference audio file
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reference_text: Transcript of reference audio
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use_cache: Whether to use cached prompt if available
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Returns:
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Tuple of (voice_prompt_dict, was_cached)
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"""
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await self.load_model_async()
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# Check cache if enabled
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if use_cache:
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cache_key = get_cache_key(audio_path, reference_text)
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cached_prompt = get_cached_voice_prompt(cache_key)
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if cached_prompt is not None:
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return cached_prompt, True
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def _create_prompt_sync():
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"""Run synchronous voice prompt creation in thread pool."""
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return self.model.create_voice_clone_prompt(
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ref_audio=str(audio_path),
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ref_text=reference_text,
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x_vector_only_mode=False,
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)
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# Run blocking operation in thread pool
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voice_prompt_items = await asyncio.to_thread(_create_prompt_sync)
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# Cache if enabled
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if use_cache:
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cache_voice_prompt(cache_key, voice_prompt_items)
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return voice_prompt_items, False
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async def combine_voice_prompts(
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self,
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audio_paths: List[str],
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reference_texts: List[str],
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) -> Tuple[np.ndarray, str]:
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"""
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Combine multiple reference samples for better quality.
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Args:
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audio_paths: List of audio file paths
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reference_texts: List of reference texts
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Returns:
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Tuple of (combined_audio, combined_text)
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"""
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from .utils.audio import load_audio
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combined_audio = []
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for audio_path in audio_paths:
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audio, sr = load_audio(audio_path)
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audio = normalize_audio(audio)
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combined_audio.append(audio)
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# Concatenate audio
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mixed = np.concatenate(combined_audio)
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mixed = normalize_audio(mixed)
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# Combine texts
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combined_text = " ".join(reference_texts)
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return mixed, combined_text
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async def generate(
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self,
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text: str,
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voice_prompt: dict,
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language: str = "en",
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seed: Optional[int] = None,
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instruct: Optional[str] = None,
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) -> Tuple[np.ndarray, int]:
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"""
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Generate audio from text using voice prompt.
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Args:
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text: Text to synthesize
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voice_prompt: Voice prompt dictionary from create_voice_prompt
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language: Language code (en or zh)
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seed: Random seed for reproducibility
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instruct: Natural language instruction for speech delivery control
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Returns:
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Tuple of (audio_array, sample_rate)
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"""
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# Load model (already handles async via to_thread if needed)
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await self.load_model_async()
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def _generate_sync():
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"""Run synchronous generation in thread pool."""
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# Set seed if provided
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if seed is not None:
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torch.manual_seed(seed)
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if torch.cuda.is_available():
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torch.cuda.manual_seed(seed)
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# Generate audio - this is the blocking operation
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wavs, sample_rate = self.model.generate_voice_clone(
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text=text,
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voice_clone_prompt=voice_prompt,
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instruct=instruct,
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)
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return wavs[0], sample_rate
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# Run blocking inference in thread pool to avoid blocking event loop
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audio, sample_rate = await asyncio.to_thread(_generate_sync)
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return audio, sample_rate
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async def generate_from_reference(
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self,
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text: str,
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audio_path: str,
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reference_text: str,
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language: str = "en",
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seed: Optional[int] = None,
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) -> Tuple[np.ndarray, int]:
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"""
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Generate audio directly from reference (convenience method).
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Args:
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text: Text to synthesize
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audio_path: Path to reference audio
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reference_text: Transcript of reference audio
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language: Language code
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seed: Random seed
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Returns:
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Tuple of (audio_array, sample_rate)
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"""
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# Create voice prompt (with caching)
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voice_prompt, _ = await self.create_voice_prompt(audio_path, reference_text)
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# Generate
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return await self.generate(text, voice_prompt, language, seed)
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# Global model instance
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_tts_model: Optional[TTSModel] = None
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def get_tts_model() -> TTSModel:
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"""Get or create TTS model instance."""
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global _tts_model
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if _tts_model is None:
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_tts_model = TTSModel()
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return _tts_model
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Returns:
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TTS backend instance
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"""
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return get_tts_backend()
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def unload_tts_model():
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"""Unload TTS model to free memory."""
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global _tts_model
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if _tts_model is not None:
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_tts_model.unload_model()
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backend = get_tts_backend()
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backend.unload_model()
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def audio_to_wav_bytes(audio: np.ndarray, sample_rate: int) -> bytes:
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"""Convert audio array to WAV bytes."""
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buffer = io.BytesIO()
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sf.write(buffer, audio, sample_rate, format="WAV")
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buffer.seek(0)
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return buffer.read()
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def audio_to_wav_bytes(audio: np.ndarray, sample_rate: int) -> bytes:
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