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xiaoxia-saas/apps/api/app/schemas/lipsync.py
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xiaoxia 29b0a7d90d
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feat(ai-avatar): 配音前置——步骤1生成配音,音频直传对口型,B-roll时间戳立即可用
后端:
- packages/domain/sentence_timings.py:抽出 compute_sentence_timings / probe_audio_duration 等公共工具
- tasks/lipsync_tts.py:改为复用 sentence_timings 公共模块,保留 Celery 任务作为降级路径
- schemas/lipsync.py:新增 AiAvatarTtsPreviewRequest/Response;CreateLipsyncJobRequest 新增可选 audio_url/audio_duration/sentence_timings 字段
- services/lipsync_service.py:新增 preview_tts() 同步方法;create_job 支持 audio_url 直传模式(下载→ffprobe→(可选重算timings)→直接提交 MediaKit,job.status=submitted)
- routes/lipsync.py:新增 POST /lipsync/jobs/tts-preview 鉴权路由

前端:
- types.ts:AiAvatarState 新增 ttsPreview 字段,TtsPreviewStatus 类型
- hooks/useAiAvatar.ts:新增 handlePreviewTts/resetTtsPreview,文案/音色/语速变化自动重置 ttsPreview;handleGenerateLipsync 在预合成完成时把 audio_url/audio_duration/sentence_timings 直传给后端
- api/aiAvatar.ts:新增 previewTts() API 封装,createLipsyncJob 入参加可选音频直传字段
- AiAvatarPage.tsx:步骤1「下一步→」改为「🎵 生成配音」+ 进度 Modal(模拟进度/loading/错误重试);步骤2进入条件改为 ttsPreview.status==='done';B-roll 时间戳优先用 lipsyncJob、降级用 ttsPreview.sentenceTimings

测试:
- tests/unit/test_lipsync_tts_preview.py:5个新用例覆盖成功/TTS失败/下载失败降级/零时长/no_audio_url
- 全量 lipsync/tts/avatar/preview 相关 1330 用例全部通过,无回归
2026-09-13 03:29:53 +08:00

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"""对口型 API Schema 定义 — #1796 / #1809 / #1822 / #1845(配音前置).
支持三种输入模式:
1. TTS 直生模式(兼容旧版前端):传 voice_id + script_text(+ speed/emotion),
后端 Celery 异步做 TTS 合成 + MediaKit 提交。
2. 直接音频模式:传 video_url + audio_url(音频已由调用方准备好)。
3. 预合成音频模式(#1845 配音前置新主路径):前端先调 POST /lipsync/tts-preview
拿到 audio_url + sentence_timings,再在 create_job 时传 audio_url + audio_duration
+ sentence_timings,后端跳过 TTS 和时间戳计算,直接 ffprobe 校验后提交 MediaKit。
"""
from __future__ import annotations
from datetime import datetime
from typing import Optional
from pydantic import BaseModel, Field, model_validator
class LipsyncJobResponse(BaseModel):
"""对口型任务响应."""
id: str
user_id: str
project_id: str
video_url: str
audio_url: str
enable_video_loop: bool
voice_id: str = ""
script_text: str = ""
speed: float = 1.0
emotion: str = ""
mediakit_task_id: str
status: str
output_video_url: str
output_duration: float
error_message: str
error_code: str
sentence_timings: Optional[list] = None
submitted_at: Optional[datetime] = None
completed_at: Optional[datetime] = None
created_at: datetime
updated_at: datetime
class Config:
from_attributes = True
class CreateLipsyncJobRequest(BaseModel):
"""创建对口型任务请求.
三种模式(三选一):
- TTS 直生(旧版/降级):voice_id + script_text 必填;audio_url 留空。
- 直接音频:video_url + audio_url 必填。
- 预合成音频(#1845 新主路径):audio_url 必填 + 可选 audio_duration/sentence_timings;
后端同步 ffprobe 校验时长、写入 timings,直接提交 MediaKit。
"""
video_url: str = Field(..., description="人物视频 URL(MP4,≤30min,单人真人)")
# 模式 2/3:直接/预合成音频
audio_url: str = Field("", description="驱动音频 URL(mp3/aac/wav/m4a/flac);直生模式留空")
audio_duration: Optional[float] = Field(None, ge=0, description="预合成音频时长(秒),可选;后端会 ffprobe 校验")
sentence_timings: Optional[list] = Field(None, description="预合成接口返回的句子时间戳,可选;若传入则直接写入 job")
# 模式 1:TTS 直生
voice_id: str = Field("", description="音色 ID(预置音色或克隆音色 profile UUID)")
script_text: str = Field("", description="要合成的文案(直生模式必填,最长 5000 字符)")
speed: float = Field(1.0, ge=0.5, le=2.0, description="语速(0.5-2.0),默认 1.0")
emotion: str = Field("", description="情绪(natural/excited/calm/friendly 或中文 自然/兴奋/沉稳/亲切)")
enable_video_loop: bool = Field(False, description="音频长于视频时是否循环画面")
project_id: str = Field("", description="项目 ID(可选)")
@model_validator(mode="after")
def _validate_input_mode(self) -> "CreateLipsyncJobRequest":
video = (self.video_url or "").strip()
if not video:
raise ValueError("video_url 不能为空")
if not video.startswith(("http://", "https://")):
raise ValueError("video_url 必须是 HTTP/HTTPS URL")
lower = video.lower().split("?")[0]
if not lower.endswith(".mp4"):
raise ValueError("video_url 仅支持 MP4 格式")
has_audio = bool((self.audio_url or "").strip())
has_tts = bool((self.voice_id or "").strip()) and bool((self.script_text or "").strip())
if not has_audio and not has_tts:
raise ValueError(
"必须提供驱动音频:要么传 audio_url(直接/预合成音频模式),"
"要么同时传 voice_id + script_text(TTS 直生模式)"
)
if has_tts and len(self.script_text) > 5000:
raise ValueError("script_text 最长 5000 字符")
if has_audio:
au = self.audio_url.strip()
if not au.startswith(("http://", "https://")):
raise ValueError("audio_url 必须是 HTTP/HTTPS URL")
au_lower = au.lower().split("?")[0]
allowed = (".mp3", ".aac", ".wav", ".m4a", ".flac")
if not any(au_lower.endswith(ext) for ext in allowed):
raise ValueError(f"audio_url 格式不支持,仅支持: {', '.join(allowed)}")
self.audio_url = au
return self
# ── #1845 TTS 预合成接口 ────────────────────────────────────────────────
class AiAvatarTtsPreviewRequest(BaseModel):
"""步骤1「生成配音」预合成请求(同步 HTTP,~2-3s)."""
voice_id: str = Field(..., min_length=1, max_length=128, description="音色 ID")
script_text: str = Field(..., min_length=1, max_length=5000, description="要合成的文案")
speed: float = Field(1.0, ge=0.5, le=2.0, description="语速(0.5-2.0),默认 1.0")
emotion: str = Field("natural", max_length=32, description="情绪")
class AiAvatarTtsPreviewResponse(BaseModel):
"""TTS 预合成响应(临时 URL,24h 内有效,足够当前会话使用)."""
audio_url: str = Field(..., description="CosyVoice 临时音频 URL")
duration: float = Field(..., ge=0, description="音频总时长(秒),ffprobe 测得")
sentence_timings: list[dict] = Field(..., description="句子级精确时间戳")