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829be0a 93f7cf1 829be0a edf3bf7 2d745c3 edf3bf7 ecf13ab 829be0a ecf13ab 829be0a 8d8e3d7 829be0a 8d8e3d7 829be0a ecf13ab 829be0a ecf13ab 93f7cf1 1d7b5cd ecf13ab 829be0a b066638 829be0a edf3bf7 2d745c3 edf3bf7 2d745c3 edf3bf7 2d745c3 edf3bf7 829be0a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | """FastAPI application factory."""
from __future__ import annotations
import asyncio
import json
import os
import tempfile
from contextlib import asynccontextmanager
from pathlib import Path
import torch
from fastapi import FastAPI, File, Form, HTTPException, UploadFile
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse, Response
from fastapi.staticfiles import StaticFiles
from sse_starlette.sse import EventSourceResponse
from server.audio import AudioValidationError, validate_reference_clip
from server.device import select_device
from server.dialog import (
DialogParseError,
DialogReferenceError,
generate_dialog,
parse_dialog,
)
from server.progress import get_bus
from server.registry import Registry
STATIC_DIR = Path(__file__).parent / "static"
def _discover_adapter_classes() -> dict[str, type]:
"""Lazily import adapter modules. Empty dict during early scaffolding."""
classes: dict[str, type] = {}
for module_name in ("chatterbox_en", "chatterbox_turbo", "chatterbox_mtl"):
try:
mod = __import__(f"server.models.{module_name}", fromlist=["Adapter"])
except ImportError:
continue
cls = getattr(mod, "Adapter", None)
if cls is not None:
classes[cls.id] = cls
return classes
def build_app() -> FastAPI:
@asynccontextmanager
async def lifespan(app: FastAPI):
device = select_device()
app.state.registry = Registry(
adapter_classes=_discover_adapter_classes(),
device=device,
)
yield
app = FastAPI(title="Chatterbox Voice Studio", lifespan=lifespan)
origins = os.getenv(
"CORS_ORIGINS",
"http://localhost:5173,http://127.0.0.1:5173",
).split(",")
app.add_middleware(
CORSMiddleware,
allow_origins=origins,
allow_methods=["*"],
allow_headers=["*"],
)
@app.get("/api/health")
def health() -> dict:
registry = app.state.registry
return {
"device": registry.device,
"torch_version": torch.__version__,
"model_status": registry.status()["status"],
}
@app.get("/api/models")
def list_models() -> list[dict]:
return app.state.registry.list_models()
@app.get("/api/models/active")
def active_model() -> dict:
return app.state.registry.status()
@app.post("/api/models/{model_id}/activate")
async def activate_model(model_id: str):
try:
await app.state.registry.get_or_load(model_id)
except KeyError:
raise HTTPException(
status_code=404,
detail={"error": {"code": "model_not_found", "message": model_id}},
)
except Exception as exc:
return JSONResponse(
status_code=503,
content={"error": {"code": "model_load_failed", "message": str(exc)}},
)
return {"ok": True}
@app.get("/api/models/active/events")
async def active_events():
async def gen():
async for evt in app.state.registry.stream_events():
yield {"data": json.dumps(evt)}
return EventSourceResponse(gen())
@app.get("/api/progress")
async def progress_events():
bus = get_bus()
async def gen():
async with bus.subscribe() as q:
while True:
evt = await q.get()
yield {"data": json.dumps(evt.to_dict())}
return EventSourceResponse(gen())
@app.post("/api/generate")
async def generate(
text: str = Form(...),
model_id: str = Form(...),
params: str = Form("{}"),
language: str | None = Form(None),
reference_wav: UploadFile | None = File(None),
):
try:
adapter = await app.state.registry.get_or_load(model_id)
except KeyError:
raise HTTPException(
status_code=404,
detail={"error": {"code": "model_not_found", "message": model_id}},
)
ref_path: str | None = None
if reference_wav is not None:
data = await reference_wav.read()
try:
validate_reference_clip(data)
except AudioValidationError as exc:
detail = {
"size_bytes": len(data),
"first_4": data[:4].decode("latin-1", errors="replace"),
"filename": reference_wav.filename,
"content_type": reference_wav.content_type,
}
print(
f"[reference_invalid] {exc} | {detail}",
flush=True,
)
return JSONResponse(
status_code=400,
content={
"error": {
"code": "reference_invalid",
"message": str(exc),
"detail": detail,
}
},
)
tmp = tempfile.NamedTemporaryFile(delete=False, suffix=".wav")
tmp.write(data)
tmp.flush()
tmp.close()
ref_path = tmp.name
bus = get_bus()
try:
async with bus.session("single", total_turns=1) as sess:
wav_bytes, _sr, seed_used = await asyncio.to_thread(
adapter.generate, text, ref_path, language, json.loads(params or "{}"),
)
sess.set_seed(seed_used)
except Exception as exc:
return JSONResponse(
status_code=500,
content={"error": {"code": "generation_failed", "message": str(exc)}},
)
return Response(
content=wav_bytes,
media_type="audio/wav",
headers={"X-Seed-Used": str(seed_used), "Access-Control-Expose-Headers": "X-Seed-Used"},
)
@app.post("/api/generate/dialog")
async def generate_dialog_route(
text: str = Form(...),
engine_id: str = Form(...),
params: str = Form("{}"),
language: str | None = Form(None),
reference_wav_a: UploadFile | None = File(None),
reference_wav_b: UploadFile | None = File(None),
reference_wav_c: UploadFile | None = File(None),
reference_wav_d: UploadFile | None = File(None),
):
speaker_clips: dict[str, bytes] = {}
upload_map = {
"A": reference_wav_a,
"B": reference_wav_b,
"C": reference_wav_c,
"D": reference_wav_d,
}
for letter, upload in upload_map.items():
if upload is None:
continue
data = await upload.read()
try:
validate_reference_clip(data)
except AudioValidationError as exc:
return JSONResponse(
status_code=400,
content={
"error": {
"code": "reference_invalid",
"message": f"speaker {letter}: {exc}",
}
},
)
speaker_clips[letter] = data
bus = get_bus()
try:
turns_preview = parse_dialog(text)
total_turns = len(turns_preview)
except DialogParseError as exc:
return JSONResponse(
status_code=400,
content={
"error": {"code": "dialog_format_invalid", "message": str(exc)}
},
)
try:
async with bus.session("dialog", total_turns=total_turns) as sess:
wav_bytes, _sr, seed_used = await generate_dialog(
registry=app.state.registry,
engine_id=engine_id,
text=text,
language=language,
params=json.loads(params or "{}"),
speaker_clips=speaker_clips,
session=sess,
)
sess.set_seed(seed_used)
except KeyError:
raise HTTPException(
status_code=404,
detail={"error": {"code": "model_not_found", "message": engine_id}},
)
except DialogReferenceError as exc:
return JSONResponse(
status_code=400,
content={
"error": {"code": "dialog_missing_reference", "message": str(exc)}
},
)
except Exception as exc:
return JSONResponse(
status_code=500,
content={
"error": {"code": "generation_failed", "message": str(exc)}
},
)
return Response(
content=wav_bytes,
media_type="audio/wav",
headers={
"X-Seed-Used": str(seed_used),
"Access-Control-Expose-Headers": "X-Seed-Used",
},
)
@app.exception_handler(HTTPException)
async def _http_exc(request, exc: HTTPException):
if isinstance(exc.detail, dict) and "error" in exc.detail:
return JSONResponse(status_code=exc.status_code, content=exc.detail)
return JSONResponse(
status_code=exc.status_code,
content={"error": {"code": "http_error", "message": str(exc.detail)}},
)
if STATIC_DIR.exists():
app.mount("/", StaticFiles(directory=str(STATIC_DIR), html=True), name="static")
return app
app = build_app()
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