"""统一处理器 - 一次加载，支持 Chat/Streaming/Duplex 热切换 本模块提供统一的多模式处理器，解决了传统架构中模型无法共享的问题。 核心优势： ========= 1. **一次加载**：模型只加载一次，节省显存和启动时间 2. **毫秒级切换**：Chat/Streaming/Duplex 模式切换 < 1ms 3. **类型安全**：每个模式返回专用的 View，API 清晰 4. **资源共享**：所有模式共享同一个模型实例 架构设计： ========= ``` UnifiedProcessor（统一入口） ├── model: MiniCPMO（统一模型，支持三种模式） │ └── duplex: DuplexCapability（双工能力组件） │ ├── set_chat_mode() → ChatView │ └── chat(request) → ChatResponse │ │ ├── set_half_duplex_mode() → HalfDuplexView │ ├── prefill(request) → str │ ├── generate(...) → Generator[StreamingChunk] │ └── rollback() → RollbackResult │ └── set_duplex_mode() → DuplexView ├── prepare(...) → str ├── prefill(...) → dict ├── generate(...) → DuplexGenerateResult └── set_break() / stop() ``` 与传统架构对比： ============== **传统架构**（问题）： ``` ChatProcessor → 加载 MiniCPMO StreamingProcessor → 加载 MiniCPMO（重复！） DuplexProcessor → 加载 MiniCPMODuplex（独立！不能共享） 问题： - 显存浪费（多份模型） - 切换慢（需重新加载） - 代码重复 ``` **统一架构**（本模块）： ``` UnifiedProcessor → 加载一次 MiniCPMO → init_unified() 初始化所有模式 → set_xxx_mode() 毫秒级切换 优势： - 显存节省（一份模型） - 切换快（< 1ms） - 代码复用 ``` 使用示例： ========= ```python from core.processors.unified import UnifiedProcessor # 创建统一处理器（一次加载） processor = UnifiedProcessor( model_path="/path/to/base_model", # HuggingFace 格式基础模型 pt_path="/path/to/custom_weights.pt", # 可选：覆盖权重 ref_audio_path="/path/to/ref.wav", ) # ========== Chat 模式 ========== chat = processor.set_chat_mode() response = chat.chat(ChatRequest( messages=[Message(role=Role.USER, content="你好")] )) print(response.content) # ========== Half-Duplex 模式（毫秒级切换）========== half_duplex = processor.set_half_duplex_mode() half_duplex.prefill(StreamingRequest( session_id="user_001", messages=[Message(role=Role.USER, content="讲个故事")], is_last_chunk=True )) for chunk in half_duplex.generate(session_id="user_001"): print(chunk.text_delta, end="", flush=True) # ========== Duplex 模式（毫秒级切换）========== duplex = processor.set_duplex_mode() duplex.prepare(system_prompt_text="你是一个友好的助手。") for audio_chunk in audio_stream: duplex.prefill(audio_waveform=audio_chunk) result = duplex.generate() if not result.is_listen: print(result.text) play_audio(result.audio_data) ``` """ from typing import Optional, Generator, List, TYPE_CHECKING import os import time import logging import base64 import numpy as np import torch from core.capabilities import ProcessorMode from core.processors.base import BaseProcessor, MiniCPMOProcessorMixin from core.schemas import ( # Chat ChatRequest, ChatResponse, # Streaming StreamingRequest, StreamingChunk, StreamingResponse, RollbackResult, # Duplex DuplexConfig, DuplexGenerateResult, # Common Message, Role, ) if TYPE_CHECKING: from MiniCPMO45.modeling_minicpmo_unified import MiniCPMO, ProcessorMode as ModelProcessorMode logger = logging.getLogger(__name__) # ============================================================ # View 类：各模式的专用接口 # ============================================================ class ChatView(MiniCPMOProcessorMixin): """Chat 模式视图 提供 Chat 模式专用的 API。 特性： - 无状态（每次完整 prefill） - 支持多模态（文本、图像、音频） - 支持 TTS 输出 示例： >>> chat = processor.set_chat_mode() >>> response = chat.chat(request) >>> print(response.content) """ def __init__(self, model: "MiniCPMO", ref_audio_path: Optional[str] = None): self._model = model self.ref_audio_path = ref_audio_path self._ref_audio_cache = None self._session_id = None def prefill( self, session_id: str, msgs, omni_mode: bool = False, max_slice_nums=None, use_image_id=None, use_tts_template: bool = False, enable_thinking: bool = False, max_inp_length: int = 8192, ) -> str: """Prefill 所有消息到 KV cache（不含 generation prompt）""" self._session_id = session_id prompt = self._model.non_streaming_prefill( session_id=session_id, msgs=msgs, omni_mode=omni_mode, max_slice_nums=max_slice_nums, use_image_id=use_image_id, use_tts_template=use_tts_template, enable_thinking=enable_thinking, max_inp_length=max_inp_length, ) return prompt def generate( self, session_id: str, max_new_tokens: int = 256, do_sample: bool = True, generate_audio: bool = False, use_tts_template: bool = True, enable_thinking: bool = False, tts_ref_audio=None, tts_sampling_params=None, output_audio_path=None, length_penalty: float = 1.1, ): """基于已有 KV cache 做非流式 generate + 可选 TTS""" result = self._model.non_streaming_generate( session_id=session_id, max_new_tokens=max_new_tokens, do_sample=do_sample, generate_audio=generate_audio, use_tts_template=use_tts_template, enable_thinking=enable_thinking, tts_ref_audio=tts_ref_audio, tts_sampling_params=tts_sampling_params, output_audio_path=output_audio_path, length_penalty=length_penalty, ) return result def streaming_generate( self, session_id: str, generate_audio: bool = True, max_new_tokens: int = 256, do_sample: bool = True, length_penalty: float = 1.1, ): """基于已有 KV cache 做流式 generate（yield StreamingChunk）""" import base64 start_time = time.time() chunk_index = 0 try: iter_gen = self._model.streaming_generate( session_id=session_id, do_sample=do_sample, generate_audio=generate_audio, max_new_tokens=max_new_tokens, use_tts_template=True, length_penalty=length_penalty, ) for item in iter_gen: if item is None: continue if not isinstance(item, (tuple, list)) or len(item) < 2: continue item1, item2 = item[0], item[1] if generate_audio: if item1 is None and item2 is None: continue waveform_chunk = item1 text_value = item2 if item2 and isinstance(item2, str) else None audio_data = None if waveform_chunk is not None and hasattr(waveform_chunk, 'cpu'): audio_np = waveform_chunk.cpu().numpy().astype(np.float32) audio_bytes = audio_np.tobytes() audio_data = base64.b64encode(audio_bytes).decode('utf-8') else: text_value = item1 if item1 and isinstance(item1, str) else None audio_data = None from core.schemas.streaming import StreamingChunk yield StreamingChunk( chunk_index=chunk_index, text_delta=text_value, audio_data=audio_data, audio_sample_rate=24000, is_final=False, ) chunk_index += 1 except Exception as e: logger.error(f"ChatView streaming_generate error: {e}", exc_info=True) raise @property def kv_cache_length(self) -> int: """当前 KV cache 长度""" return self._model._get_kv_cache_length() def chat( self, request: ChatRequest, max_new_tokens: int = 256, do_sample: bool = True, generate_audio: Optional[bool] = None, ) -> ChatResponse: """执行 Chat 推理 Args: request: Chat 请求 max_new_tokens: 最大生成 token 数 do_sample: 是否采样 generate_audio: 是否生成音频（None 时从 request.tts.enabled 读取） Returns: ChatResponse """ start_time = time.time() try: return self._chat_impl(request, max_new_tokens, do_sample, generate_audio, start_time) except Exception as e: logger.error(f"Chat 推理失败: {e}") return ChatResponse( success=False, error=str(e), text="", latency_ms=(time.time() - start_time) * 1000, ) def _chat_impl( self, request: ChatRequest, max_new_tokens: int, do_sample: bool, generate_audio: Optional[bool], start_time: float, ) -> ChatResponse: """Chat 推理实现（内部方法）""" # 确定 TTS 参数 tts_config = request.tts if hasattr(request, 'tts') and request.tts else None tts_enabled = tts_config.enabled if tts_config else False # 如果 TTS 启用但没指定 ref_audio，使用 ChatView 的默认 ref_audio if tts_config and tts_enabled and not tts_config.ref_audio_path and not tts_config.ref_audio_data: if self.ref_audio_path: tts_config = tts_config.model_copy(update={"ref_audio_path": self.ref_audio_path}) # 如果未显式指定 generate_audio，从 tts.enabled 读取 if generate_audio is None: generate_audio = tts_enabled use_tts_template = request.use_tts_template if hasattr(request, 'use_tts_template') else False use_tts_template = use_tts_template or generate_audio output_audio_path = None tts_sampling_params = None if generate_audio and tts_config: output_audio_path = tts_config.output_path # 构建 TTS 采样参数 if tts_config.sampling: from MiniCPMO45.utils import TTSSamplingParams as ModelTTSSamplingParams tts_sampling_params = ModelTTSSamplingParams( top_p=tts_config.sampling.top_p, min_p=tts_config.sampling.min_p, top_k=tts_config.sampling.top_k, repetition_penalty=tts_config.sampling.repetition_penalty, temperature=tts_config.sampling.temperature, win_size=tts_config.sampling.win_size, tau_r=tts_config.sampling.tau_r, ) # 转换消息格式 msgs = self._convert_messages_to_model_format( request.messages, tts_config=tts_config, ) # 解析 TTS ref audio（独立于 LLM ref audio） # 当用户在 tts_config 中提供了 ref_audio_data 或 ref_audio_path 时， # 将其解析为 ndarray 传给 model.chat()，用于 TTS vocoder 初始化。 # 这样即使 messages 中 system prompt 的 audio（LLM ref audio）是另一个音频， # TTS 也能使用独立的参考音频。 tts_ref_audio: Optional[np.ndarray] = None if tts_config and generate_audio: if tts_config.ref_audio_data: import base64 as b64_mod tts_ref_bytes = b64_mod.b64decode(tts_config.ref_audio_data) tts_ref_audio = np.frombuffer(tts_ref_bytes, dtype=np.float32) logger.info(f"Chat TTS ref audio from tts_config.ref_audio_data: {len(tts_ref_audio)} samples ({len(tts_ref_audio)/16000:.1f}s)") elif tts_config.ref_audio_path: import librosa tts_ref_audio, _ = librosa.load(tts_config.ref_audio_path, sr=16000, mono=True) logger.info(f"Chat TTS ref audio from tts_config.ref_audio_path: {tts_config.ref_audio_path}") # 调用模型 with torch.no_grad(): result = self._model.chat( msgs=msgs, sampling=do_sample, max_new_tokens=max_new_tokens, stream=False, # TTS 参数 use_tts_template=use_tts_template, generate_audio=generate_audio, output_audio_path=output_audio_path, tts_sampling_params=tts_sampling_params, tts_ref_audio=tts_ref_audio, # 高级参数 omni_mode=request.omni_mode if hasattr(request, 'omni_mode') else False, enable_thinking=request.enable_thinking if hasattr(request, 'enable_thinking') else False, return_prompt=request.return_prompt if hasattr(request, 'return_prompt') else False, # 图像参数 max_slice_nums=request.image.max_slice_nums if hasattr(request, 'image') and request.image else None, use_image_id=request.image.use_image_id if hasattr(request, 'image') and request.image else False, ) # 处理返回值 # 模型 chat() 返回值（modeling_minicpmo_unified.py）： # - 无音频: answer (str) # - 有音频: (answer, waveform_np) # - return_prompt + 无音频: (answer, prompt) # - return_prompt + 有音频: (answer, prompt, waveform_np) return_prompt_flag = request.return_prompt if hasattr(request, 'return_prompt') else False text_content = None prompt = None waveform = None if isinstance(result, tuple): if return_prompt_flag: if len(result) == 3: text_content, prompt, waveform = result else: text_content, prompt = result else: if len(result) == 2: text_content, waveform = result else: text_content = result[0] else: text_content = result # 将 waveform numpy array 转为 base64 WAV audio_base64 = None if waveform is not None: try: import io import soundfile as sf_lib buf = io.BytesIO() sf_lib.write(buf, waveform, 24000, format="WAV") audio_base64 = base64.b64encode(buf.getvalue()).decode("utf-8") logger.info(f"TTS 音频生成成功: {len(waveform)} samples, {len(waveform)/24000:.1f}s") except Exception as e: logger.error(f"TTS 音频编码失败: {e}") duration_ms = (time.time() - start_time) * 1000 # 读取模型存储的 token 统计（model.chat() 内部设置） chat_token_stats = getattr(self._model, '_last_chat_token_stats', {}) input_tokens = chat_token_stats.get('input_tokens', 0) generated_tokens = chat_token_stats.get('generated_tokens', 0) return ChatResponse( text=text_content or "", audio_data=audio_base64, audio_path=tts_config.output_path if (tts_config and tts_config.output_path) else None, audio_sample_rate=24000, duration_ms=duration_ms, prompt=prompt, tokens_generated=generated_tokens, token_stats={ "cached_tokens": 0, # Chat 无状态，无缓存 "input_tokens": input_tokens, "generated_tokens": generated_tokens, "total_tokens": input_tokens + generated_tokens, }, ) class HalfDuplexView(MiniCPMOProcessorMixin): """Half-Duplex 模式视图 提供 Half-Duplex 模式专用的 API。 特性： - 有状态（session_id + KV Cache 复用） - 流式返回（边生成边返回） - 支持回溯（speculative_snapshot） - 独占 Worker（会话期间） 示例： >>> half_duplex = processor.set_half_duplex_mode() >>> half_duplex.prefill(request) >>> for chunk in half_duplex.generate(session_id): ... print(chunk.text_delta, end="") """ def __init__(self, model: "MiniCPMO", ref_audio_path: Optional[str] = None): self._model = model self.ref_audio_path = ref_audio_path self._ref_audio_cache = None def init_ref_audio(self, ref_audio_path: Optional[str] = None) -> None: """初始化参考音频（用于 TTS，从文件路径） Args: ref_audio_path: 参考音频路径 """ path = ref_audio_path or self.ref_audio_path if path: ref_audio = self._load_ref_audio(path) self._model.init_token2wav_cache(prompt_speech_16k=ref_audio) logger.info(f"已初始化参考音频: {path}") def init_ref_audio_from_data(self, ref_audio: np.ndarray) -> None: """初始化参考音频（用于 TTS，从 ndarray 数据） 用于前端直接上传 base64 ref audio 的场景， 无需落盘为文件，直接用 ndarray 初始化 TTS cache。 Args: ref_audio: 16kHz mono float32 音频 ndarray """ self._model.init_token2wav_cache(prompt_speech_16k=ref_audio) logger.info(f"已初始化参考音频 (from data, {len(ref_audio)} samples, {len(ref_audio)/16000:.1f}s)") def reset_session(self, session_id: str) -> None: """重置会话 Args: session_id: 会话 ID """ logger.info(f"重置会话: {session_id}") self._model.reset_session() def prefill(self, request: StreamingRequest) -> str: """流式预填充（支持多条消息逐条 prefill） 模型的 streaming_prefill 要求每次只处理一条消息（assert len(msgs)==1）。 本方法将 request.messages 拆分为逐条调用，is_last_chunk 仅在最后一条 且 request.is_last_chunk=True 时设为 True。 Args: request: 流式请求（可包含多条消息） Returns: 最后一条消息的 prompt 文本 """ prompt = "" num_messages = len(request.messages) for i, msg in enumerate(request.messages): content = self._convert_content_to_model_format(msg.content) if len(content) == 1 and isinstance(content[0], str): content = content[0] msgs = [{ "role": msg.role.value, "content": content }] # is_last_chunk 仅在最后一条消息且 request 标记为 last 时为 True is_last = request.is_last_chunk and (i == num_messages - 1) max_slice = request.image.max_slice_nums if hasattr(request, 'image') and request.image else None result = self._model.streaming_prefill( session_id=request.session_id, msgs=msgs, omni_mode=request.omni_mode, max_slice_nums=max_slice, use_tts_template=request.use_tts_template, enable_thinking=request.enable_thinking, is_last_chunk=is_last, stream_input=False, ) if result: prompt = result return prompt def non_streaming_prefill( self, session_id: str, msgs, omni_mode: bool = False, max_slice_nums=None, use_tts_template: bool = True, enable_thinking: bool = False, ) -> str: """非流式预填充：一次性 prefill 所有消息到 KV cache""" prompt = self._model.non_streaming_prefill( session_id=session_id, msgs=msgs, omni_mode=omni_mode, max_slice_nums=max_slice_nums, use_tts_template=use_tts_template, enable_thinking=enable_thinking, ) return prompt def generate( self, session_id: str, generate_audio: bool = True, max_new_tokens: int = 256, do_sample: bool = True, enable_speculative_snapshot: bool = False, length_penalty: float = 1.1, ) -> Generator[StreamingChunk, None, None]: """流式生成 Args: session_id: 会话 ID generate_audio: 是否生成音频 max_new_tokens: 最大生成 token 数 do_sample: 是否采样 enable_speculative_snapshot: 是否启用回溯快照 length_penalty: 长度惩罚系数（>1.0 抑制 EOS，输出更长；=1.0 不惩罚） Yields: StreamingChunk """ start_time = time.time() chunk_index = 0 try: iter_gen = self._model.streaming_generate( session_id=session_id, do_sample=do_sample, generate_audio=generate_audio, max_new_tokens=max_new_tokens, use_tts_template=True, enable_speculative_snapshot=enable_speculative_snapshot, length_penalty=length_penalty, ) for item in iter_gen: if item is None: continue if not isinstance(item, (tuple, list)) or len(item) < 2: continue item1, item2 = item[0], item[1] chunk_start = time.time() if generate_audio: if item1 is None and item2 is None: continue waveform_chunk = item1 text_value = item2 if item2 and isinstance(item2, str) else None audio_data = None if waveform_chunk is not None and hasattr(waveform_chunk, 'cpu'): audio_np = waveform_chunk.cpu().numpy().astype(np.float32) audio_bytes = audio_np.tobytes() audio_data = base64.b64encode(audio_bytes).decode('utf-8') else: text_value = item1 if item1 and isinstance(item1, str) else None audio_data = None chunk_duration = (time.time() - chunk_start) * 1000 yield StreamingChunk( chunk_index=chunk_index, text_delta=text_value, audio_data=audio_data, audio_sample_rate=24000, is_final=False, duration_ms=chunk_duration, ) chunk_index += 1 # 最终块 total_duration = (time.time() - start_time) * 1000 yield StreamingChunk( chunk_index=chunk_index, text_delta=None, audio_data=None, is_final=True, duration_ms=total_duration, ) except Exception as e: logger.error(f"流式生成失败: {e}") yield StreamingChunk( chunk_index=chunk_index, text_delta=None, audio_data=None, is_final=True, duration_ms=(time.time() - start_time) * 1000, ) raise def can_rollback(self) -> bool: """检查是否可以回溯""" return self._model.has_speculative_snapshot() def rollback(self) -> RollbackResult: """回溯到上一个快照点""" if not self._model.has_speculative_snapshot(): return RollbackResult( success=False, reason="没有可用的快照" ) try: success = self._model.restore_speculative_snapshot() if success: return RollbackResult( success=True, restored_position="已恢复到 streaming_generate 调用前" ) else: return RollbackResult(success=False, reason="恢复失败") except Exception as e: return RollbackResult(success=False, reason=str(e)) def clear_rollback_point(self) -> None: """清除回溯点""" self._model.clear_speculative_snapshot() def complete_turn( self, session_id: str, messages: List[Message], generate_audio: bool = True, max_new_tokens: int = 256, output_audio_path: Optional[str] = None, length_penalty: float = 1.1, ) -> StreamingResponse: """完成一轮对话（便捷方法） 封装 prefill + generate 流程，自动累加增量文本和音频。 适用于不需要实时流式输出的场景。 Args: session_id: 会话 ID messages: 消息列表（可以包含多条，会逐条 prefill） generate_audio: 是否生成音频 max_new_tokens: 最大生成 token 数 output_audio_path: 可选，自动保存音频的路径 Returns: StreamingResponse: 包含完整文本和音频的响应 示例： >>> half_duplex = processor.set_half_duplex_mode() >>> half_duplex.reset_session("user_001") >>> half_duplex.init_ref_audio("/path/to/ref.wav") >>> >>> response = streaming.complete_turn( ... session_id="user_001", ... messages=[ ... Message(role=Role.SYSTEM, content="你是一个友好的助手。"), ... Message(role=Role.USER, content="你好，介绍一下你自己。"), ... ], ... generate_audio=True, ... output_audio_path="/tmp/output.wav" ... ) >>> print(response.full_text) >>> print(f"音频时长: {response.audio_duration_ms}ms") """ # StreamingRequest, StreamingResponse, Role, Message 已在顶层导入 start_time = time.time() # 逐条 prefill 消息 for i, msg in enumerate(messages): is_last = (i == len(messages) - 1) self.prefill(StreamingRequest( session_id=session_id, messages=[msg], use_tts_template=True, is_last_chunk=is_last, )) # 生成并累加结果 full_text = "" audio_chunks: List[np.ndarray] = [] chunk_count = 0 for chunk in self.generate( session_id=session_id, generate_audio=generate_audio, max_new_tokens=max_new_tokens, length_penalty=length_penalty, ): chunk_count += 1 # 累加增量文本 if chunk.text_delta: full_text += chunk.text_delta # 收集音频块 if chunk.audio_data: audio_bytes = base64.b64decode(chunk.audio_data) audio_np = np.frombuffer(audio_bytes, dtype=np.float32) if audio_np.size > 0: audio_chunks.append(audio_np) # 合并音频 audio_data_base64 = None audio_duration_ms = None if audio_chunks: full_audio = np.concatenate(audio_chunks) audio_duration_ms = len(full_audio) / 24000 * 1000 # 保存音频文件（如果指定） if output_audio_path: import soundfile as sf sf.write(output_audio_path, full_audio, 24000) logger.info(f"音频已保存: {output_audio_path}") # 转为 Base64 audio_data_base64 = base64.b64encode(full_audio.tobytes()).decode('utf-8') total_duration_ms = (time.time() - start_time) * 1000 return StreamingResponse( success=True, session_id=session_id, full_text=full_text, audio_path=output_audio_path, audio_data=audio_data_base64, audio_sample_rate=24000, audio_duration_ms=audio_duration_ms, total_chunks=chunk_count, total_duration_ms=total_duration_ms, ) class DuplexView: """Duplex 模式视图 提供 Duplex 模式专用的 API。 特性： - 全双工实时对话 - 支持打断 - Listen/Speak 状态管理 示例： >>> duplex = processor.set_duplex_mode() >>> duplex.prepare(system_prompt_text="你是助手") >>> duplex.prefill(audio_waveform=chunk) >>> result = duplex.generate() """ def __init__( self, model: "MiniCPMO", ref_audio_path: Optional[str] = None, config: Optional[DuplexConfig] = None, ): self._model = model self.ref_audio_path = ref_audio_path self.config = config or DuplexConfig() self._ref_audio_cache: Optional[np.ndarray] = None def _load_ref_audio(self, path: Optional[str] = None) -> np.ndarray: """加载参考音频""" import librosa audio_path = path or self.ref_audio_path if audio_path is None: raise ValueError("未提供参考音频路径") if self._ref_audio_cache is not None and path is None: return self._ref_audio_cache audio, _ = librosa.load(audio_path, sr=16000, mono=True) if path is None: self._ref_audio_cache = audio return audio def prepare( self, system_prompt_text: Optional[str] = None, ref_audio_path: Optional[str] = None, prompt_wav_path: Optional[str] = None, ) -> str: """准备双工会话 Args: system_prompt_text: 系统提示文本 ref_audio_path: 参考音频路径 prompt_wav_path: TTS prompt 音频路径 Returns: 完整的 system prompt 字符串 """ if system_prompt_text is None: system_prompt_text = "Streaming Omni Conversation." prefix_system_prompt = f"<|im_start|>system\n{system_prompt_text}\n<|audio_start|>" suffix_system_prompt = "<|audio_end|><|im_end|>" # 加载参考音频 ref_audio = None if ref_audio_path or self.ref_audio_path: ref_audio = self._load_ref_audio(ref_audio_path) # 调用透传方法 prompt = self._model.duplex_prepare( prefix_system_prompt=prefix_system_prompt, suffix_system_prompt=suffix_system_prompt, ref_audio=ref_audio, prompt_wav_path=prompt_wav_path or ref_audio_path or self.ref_audio_path, ) logger.info(f"双工会话准备完成") return prompt def prefill( self, audio_waveform: Optional[np.ndarray] = None, audio_path: Optional[str] = None, frame_list: Optional[List[np.ndarray]] = None, max_slice_nums: int = 1, ) -> dict: """预填充用户音频 Args: audio_waveform: 音频波形数据（16kHz mono） audio_path: 音频文件路径 frame_list: 图像帧列表 max_slice_nums: HD 图像切片数 Returns: 预填充结果 dict """ import librosa if audio_path and audio_waveform is None: audio_waveform, _ = librosa.load(audio_path, sr=16000, mono=True) result = self._model.duplex_prefill( audio_waveform=audio_waveform, frame_list=frame_list, max_slice_nums=max_slice_nums, ) return result def generate(self, force_listen: bool = False) -> DuplexGenerateResult: """生成响应 Args: force_listen: 前端 Force Listen 开关，强制本次生成为 listen Returns: DuplexGenerateResult """ result = self._model.duplex_generate( decode_mode=self.config.decode_mode, temperature=self.config.temperature, top_k=self.config.top_k, top_p=self.config.top_p, listen_prob_scale=self.config.listen_prob_scale, listen_top_k=self.config.listen_top_k, text_repetition_penalty=self.config.text_repetition_penalty, text_repetition_window_size=self.config.text_repetition_window_size, length_penalty=self.config.length_penalty, force_listen_override=force_listen, ) # 转换音频 audio_data = None if result.get("audio_waveform") is not None: waveform = result["audio_waveform"] if isinstance(waveform, torch.Tensor): waveform = waveform.cpu().numpy() audio_bytes = waveform.astype(np.float32).tobytes() audio_data = base64.b64encode(audio_bytes).decode('utf-8') return DuplexGenerateResult( is_listen=result.get("is_listen", True), text=result.get("text", ""), audio_data=audio_data, end_of_turn=result.get("end_of_turn", False), current_time=result.get("current_time", 0), cost_llm_ms=result.get("cost_llm", 0) * 1000 if result.get("cost_llm") else None, cost_tts_prep_ms=result.get("cost_tts_prep", 0) * 1000 if result.get("cost_tts_prep") else None, cost_tts_ms=result.get("cost_tts", 0) * 1000 if result.get("cost_tts") else None, cost_token2wav_ms=result.get("cost_token2wav", 0) * 1000 if result.get("cost_token2wav") else None, cost_all_ms=result.get("cost_all", 0) * 1000 if result.get("cost_all") else None, n_tokens=result.get("n_tokens"), n_tts_tokens=result.get("n_tts_tokens"), ) def finalize(self) -> None: """完成 generate 的延迟操作（feed 终止符 + ，滑窗维护） 必须在 generate() 之后、下一次 prefill() 之前调用。 可异步调度：先返回结果给前端，再在后台执行 finalize。 """ self._model.duplex_finalize() def set_break(self) -> None: """设置打断信号""" self._model.duplex_set_break() logger.info("设置打断信号") def clear_break(self) -> None: """清除打断信号""" self._model.duplex_clear_break() def stop(self) -> None: """停止当前会话""" self._model.duplex_stop() logger.info("会话已停止") def is_break_set(self) -> bool: """检查是否设置了打断""" return self._model.duplex_is_break_set() def is_stopped(self) -> bool: """检查会话是否已停止""" return self._model.duplex_is_stopped() def cleanup(self) -> None: """清理 Duplex 会话资源，释放 GPU 显存 在会话结束后调用（stop 之后），释放所有 Duplex 相关的 GPU 资源， 使显存恢复到模型刚加载时的状态。 释放的资源包括： - Duplex KV cache（decoder.cache）— ~660 MB - TTS audio_tokenizer live caches（stream_cache, hift_cache_dict）— ~820 MB - 模型级 session 状态（token2wav_cache 等）— ~66 MB 注意： - 此方法不调用 gc.collect() 和 torch.cuda.empty_cache()， 调用方应在此方法之后自行调用以确保显存回收到 CUDA driver。 - cleanup 后可以正常启动新的 Duplex session（prepare 会重新初始化所有状态）。 - cleanup 后也可以正常切换到 Chat/Streaming 模式。 """ model = self._model # Step 1: 重置 DuplexCapability 状态（释放 KV cache、TTS past_key_values 等） if hasattr(model, 'duplex') and model.duplex is not None: model.duplex._reset_streaming_state() model.duplex.decoder.reset() # Step 2: 清理 TTS audio_tokenizer 的 live caches（最大泄漏源） if hasattr(model, 'tts') and hasattr(model.tts, 'audio_tokenizer'): tokenizer = model.tts.audio_tokenizer for attr in ('stream_cache', 'hift_cache_dict', 'cache'): if hasattr(tokenizer, attr) and getattr(tokenizer, attr) is not None: setattr(tokenizer, attr, None) # Step 3: 重置模型级 session 状态 model.reset_session(reset_token2wav_cache=True) logger.info("Duplex 会话资源已清理") def offline_inference(self, task_input: "DuplexOfflineInput") -> "DuplexOfflineOutput": """离线推理（便捷方法） 对完整音频文件进行离线推理，一站式处理。 适用场景： - 单元测试 - 离线批量处理 - 演示场景 注意：这不是实时双工会话，而是对完整音频文件的离线处理。 实时双工请直接使用 prepare/prefill/generate 原语。 Args: task_input: 离线推理输入 Returns: 离线推理输出 示例： >>> output = duplex.offline_inference(DuplexOfflineInput( ... system_prompt="你是一个友好的助手。", ... user_audio_path="/path/to/audio.wav", ... ref_audio_path="/path/to/ref.wav" ... )) >>> print(output.full_text) """ from core.schemas.duplex import DuplexOfflineInput, DuplexOfflineOutput, DuplexChunkResult import librosa start_time = time.time() chunks = [] full_text = "" audio_chunks = [] try: # 准备会话 self.prepare( system_prompt_text=task_input.system_prompt, ref_audio_path=task_input.ref_audio_path, ) # 加载用户音频并分块 if task_input.user_audio_path: user_audio, _ = librosa.load( task_input.user_audio_path, sr=task_input.config.sample_rate, mono=True ) chunk_samples = task_input.config.sample_rate * task_input.config.chunk_ms // 1000 num_chunks = (len(user_audio) + chunk_samples - 1) // chunk_samples for i in range(num_chunks): chunk_start = time.time() # 获取音频块 start_idx = i * chunk_samples end_idx = min(start_idx + chunk_samples, len(user_audio)) audio_chunk = user_audio[start_idx:end_idx] # 如果不足一个块，补零 if len(audio_chunk) < chunk_samples: audio_chunk = np.pad(audio_chunk, (0, chunk_samples - len(audio_chunk))) # 获取图像帧（如果有） # [CRITICAL] 必须传 PIL Image，不能是 numpy array（否则内存激增 18GB） frame_list = None if task_input.image_paths and i < len(task_input.image_paths): from PIL import Image frame = Image.open(task_input.image_paths[i]).convert("RGB") frame_list = [frame] # PIL Image, NOT np.array(frame) # 预填充 self.prefill(audio_waveform=audio_chunk, frame_list=frame_list) # 生成 result = self.generate() chunk_elapsed = (time.time() - chunk_start) * 1000 # 记录结果 chunks.append(DuplexChunkResult( chunk_idx=i, phase="user", is_listen=result.is_listen, text=result.text, has_audio=result.audio_data is not None, audio_data=result.audio_data, # 保存音频数据 end_of_turn=result.end_of_turn, elapsed_ms=chunk_elapsed, )) if not result.is_listen: full_text += result.text if result.audio_data: audio_chunks.append(result.audio_data) if result.end_of_turn: break # 停止会话 self.stop() total_duration = (time.time() - start_time) * 1000 return DuplexOfflineOutput( success=True, full_text=full_text, total_chunks=len(chunks), audio_duration_s=len(audio_chunks) * 0.5, # 估算 total_duration_ms=total_duration, chunks=chunks, ) except Exception as e: logger.error(f"离线推理失败: {e}") return DuplexOfflineOutput( success=False, error=str(e), total_duration_ms=(time.time() - start_time) * 1000, ) # ============================================================ # UnifiedProcessor：统一入口 # ============================================================ class UnifiedProcessor(BaseProcessor): """Unified processor — load once, hot-switch between Chat/Streaming/Duplex. Key features: - Model loaded once, shared across all modes - Mode switching < 1ms - Each mode returns a dedicated View with type-safe API Usage: >>> processor = UnifiedProcessor(model_path=..., pt_path=...) >>> >>> # Chat mode >>> chat = processor.set_chat_mode() >>> response = chat.chat(request) >>> >>> # Half-Duplex mode >>> half_duplex = processor.set_half_duplex_mode() >>> half_duplex.prefill(request) >>> for chunk in half_duplex.generate(session_id): ... print(chunk.text_delta, end="") >>> >>> # Duplex mode >>> duplex = processor.set_duplex_mode() >>> duplex.prepare(...) >>> result = duplex.generate() Attributes: model_path: Base model path (HuggingFace format directory). pt_path: Optional extra .pt weights path (overrides base model weights). device: Target device. ref_audio_path: Default reference audio path. model: MiniCPMO unified model instance. """ def __init__( self, model_path: str, pt_path: Optional[str] = None, device: str = "cuda", ref_audio_path: Optional[str] = None, duplex_config: Optional[DuplexConfig] = None, preload_both_tts: bool = True, compile: bool = False, chat_vocoder: str = "token2wav", attn_implementation: str = "auto", ): """Initialize the unified processor. Args: model_path: Base model path (HuggingFace format directory). pt_path: Optional extra .pt weights path (overrides base weights). device: Target device. ref_audio_path: Default reference audio path for TTS voice cloning. If None, TTS requests fail-fast when the client also omits it. duplex_config: Duplex configuration. preload_both_tts: Whether to preload both TTS vocoders (recommended True). compile: Whether to apply torch.compile to core sub-modules. chat_vocoder: Chat mode vocoder ("token2wav" or "cosyvoice2"). attn_implementation: Attention implementation ("auto" / "flash_attention_2" / "sdpa" / "eager"). """ self.pt_path = pt_path self.ref_audio_path = ref_audio_path self.duplex_config = duplex_config or DuplexConfig() self.preload_both_tts = preload_both_tts self.compile = compile self.chat_vocoder = chat_vocoder self.attn_implementation = attn_implementation # View instances (lazily created) self._chat_view: Optional[ChatView] = None self._half_duplex_view: Optional[HalfDuplexView] = None self._duplex_view: Optional[DuplexView] = None # Current mode self._current_mode: Optional[ProcessorMode] = None super().__init__(model_path=model_path, device=device) @property def mode(self) -> ProcessorMode: """Current processor mode.""" return self._current_mode or ProcessorMode.HALF_DUPLEX def _resolve_attn_implementation(self) -> str: """Resolve the actual attention implementation to use. When configured as "auto", auto-detects the environment: - flash-attn available -> flash_attention_2 - flash-attn unavailable -> sdpa When configured explicitly, uses the value directly (fail-fast if unavailable). Returns: The resolved attn_implementation string. """ configured = self.attn_implementation if configured != "auto": if configured == "flash_attention_2": try: from transformers.utils import is_flash_attn_2_available if not is_flash_attn_2_available(): raise RuntimeError( "config.json specifies attn_implementation='flash_attention_2', " "but flash-attn is not installed or unavailable.\n" "Solutions:\n" " 1. Install flash-attn: MAX_JOBS=16 pip install 'flash-attn>=2.6' --no-build-isolation\n" " 2. Or set to 'auto'/'sdpa' to use PyTorch built-in SDPA" ) except ImportError: raise RuntimeError( "config.json specifies attn_implementation='flash_attention_2', " "but transformers.utils.is_flash_attn_2_available is not available." ) logger.info(f"[Attention] Using user-specified: {configured}") return configured # Auto mode: detect flash-attn availability try: from transformers.utils import is_flash_attn_2_available flash_available = is_flash_attn_2_available() except ImportError: flash_available = False if flash_available: try: import flash_attn flash_version = flash_attn.__version__ except (ImportError, AttributeError): flash_version = "unknown" logger.info( f"[Attention] auto -> flash_attention_2 " f"(flash-attn {flash_version} available, best performance)" ) return "flash_attention_2" else: logger.info( "[Attention] auto -> sdpa " "(flash-attn unavailable, using PyTorch built-in SDPA. " "For flash_attention_2, install: " "MAX_JOBS=16 pip install 'flash-attn>=2.6' --no-build-isolation)" ) return "sdpa" def _load_model(self) -> None: """Load the unified model.""" logger.info(f"Loading unified model: {self.model_path}") if self.pt_path: logger.info(f"Extra weights: {self.pt_path}") start = time.time() from MiniCPMO45.modeling_minicpmo_unified import MiniCPMO, ProcessorMode as ModelProcessorMode # Resolve attention implementation (auto-detect when set to "auto") resolved_attn = self._resolve_attn_implementation() # Load base model self.model = MiniCPMO.from_pretrained( self.model_path, trust_remote_code=True, _attn_implementation=resolved_attn, ) self.model.bfloat16().eval() if self.device == "cuda": self.model.cuda() load_time = time.time() - start logger.info( f"Base model loaded in {load_time:.1f}s, " f"attn_implementation={resolved_attn}" ) # Unified initialization (supports all three modes) logger.info("Initializing unified mode...") init_start = time.time() self.model.init_unified( pt_path=self.pt_path, preload_both_tts=self.preload_both_tts, duplex_config={ "generate_audio": self.duplex_config.generate_audio, "ls_mode": self.duplex_config.ls_mode, "max_new_speak_tokens_per_chunk": self.duplex_config.max_new_speak_tokens_per_chunk, "temperature": self.duplex_config.temperature, "top_k": self.duplex_config.top_k, "top_p": self.duplex_config.top_p, "force_listen_count": self.duplex_config.force_listen_count, }, device=self.device, chat_vocoder=self.chat_vocoder, ) init_time = time.time() - init_start logger.info(f"Unified mode initialization done in {init_time:.1f}s") # torch.compile acceleration + warmup (optional) if self.compile: compile_start = time.time() self.model.apply_torch_compile(mode="default", dynamic=True) self.model.warmup_compile(ref_audio_path=self.ref_audio_path) compile_time = time.time() - compile_start logger.info(f"torch.compile + warmup done in {compile_time:.1f}s") # Create View instances self._chat_view = ChatView(self.model, self.ref_audio_path) self._half_duplex_view = HalfDuplexView(self.model, self.ref_audio_path) self._duplex_view = DuplexView(self.model, self.ref_audio_path, self.duplex_config) total_time = time.time() - start logger.info(f"UnifiedProcessor initialization complete in {total_time:.1f}s") def _release_resources(self) -> None: """Release model resources.""" if self.model is not None: del self.model self.model = None if torch.cuda.is_available(): torch.cuda.empty_cache() # ==================== Mode Switching ==================== def set_chat_mode(self) -> ChatView: """Switch to Chat mode. Returns: ChatView instance. """ from MiniCPMO45.modeling_minicpmo_unified import ProcessorMode as ModelProcessorMode if self._current_mode != ProcessorMode.CHAT: start = time.time() self.model.set_mode(ModelProcessorMode.CHAT) self._current_mode = ProcessorMode.CHAT logger.info(f"Switched to CHAT mode in {(time.time()-start)*1000:.1f}ms") return self._chat_view def set_half_duplex_mode(self) -> HalfDuplexView: """Switch to Half-Duplex mode. Returns: HalfDuplexView instance. """ from MiniCPMO45.modeling_minicpmo_unified import ProcessorMode as ModelProcessorMode if self._current_mode != ProcessorMode.HALF_DUPLEX: start = time.time() self.model.set_mode(ModelProcessorMode.STREAMING) self._current_mode = ProcessorMode.HALF_DUPLEX logger.info(f"Switched to HALF_DUPLEX mode in {(time.time()-start)*1000:.1f}ms") return self._half_duplex_view def set_duplex_mode(self) -> DuplexView: """Switch to Duplex mode. Returns: DuplexView instance. """ from MiniCPMO45.modeling_minicpmo_unified import ProcessorMode as ModelProcessorMode if self._current_mode != ProcessorMode.DUPLEX: start = time.time() self.model.set_mode(ModelProcessorMode.DUPLEX) self._current_mode = ProcessorMode.DUPLEX logger.info(f"Switched to DUPLEX mode in {(time.time()-start)*1000:.1f}ms") return self._duplex_view # ==================== KV Cache State ==================== @property def kv_cache_length(self) -> int: """Total token count in the LLM KV cache. Returns the number of tokens processed in the backbone LLM's KV cache, including system prompt + all history turns + currently generated tokens. Notes: - Half-Duplex mode: reads model.llm_past_key_values - Duplex mode: reads model.duplex.decoder.cache (separate KV cache) - Chat mode: only valid during a chat() call - Returns 0 when KV cache is empty or model is not loaded """ if self.model is None: return 0 # Duplex mode uses the DuplexCapability's internal decoder cache if (self._current_mode == ProcessorMode.DUPLEX and hasattr(self.model, 'duplex') and self.model.duplex is not None and hasattr(self.model.duplex, 'decoder')): length = self.model.duplex.decoder.get_cache_length() if length == 0: decoder = self.model.duplex.decoder cache_type = type(decoder.cache).__name__ if decoder.cache is not None else "None" logger.warning( f"[kv_cache_length] Duplex decoder.get_cache_length() returned 0: " f"cache_type={cache_type}, cache is None={decoder.cache is None}" ) return length if self._current_mode == ProcessorMode.DUPLEX: logger.warning( f"[kv_cache_length] Mode is DUPLEX but conditions not met: " f"has_duplex={hasattr(self.model, 'duplex')}, " f"duplex_is_none={getattr(self.model, 'duplex', None) is None}, " f"has_decoder={hasattr(getattr(self.model, 'duplex', None) or object(), 'decoder')}" ) return self.model._get_kv_cache_length() # ==================== Convenience Properties ==================== @property def chat(self) -> ChatView: """Chat view (does not switch mode, only returns the view).""" return self._chat_view @property def half_duplex(self) -> HalfDuplexView: """Half-Duplex view (does not switch mode, only returns the view).""" return self._half_duplex_view @property def duplex(self) -> DuplexView: """Duplex view (does not switch mode, only returns the view).""" return self._duplex_view