Files
voicebox/backend/routes/transcription.py
T
James Pine 0d0b62ea93 address CodeRabbit review: fix 4 critical + 12 major issues
Critical:
- Remove dead backend.utils.validation PyInstaller hidden import
- Fix story_items table rebuild to preserve track/trim/version columns
- Guard cache migration against same source/destination path
- Fix regeneration audio overwrite (use random uuid suffix per take)

Major:
- Engine selector: validate language on Qwen switch, clear stale modelSize
- Sync language validation regex between profile create and generate (22 langs)
- Guard CUDA download against duplicate concurrent requests
- Only set model_size for engines that support multiple sizes
- Fix 404 swallowed by generic except in history export
- Validate audio_path before FileResponse in export-audio
- Transcription: stream uploads in 1MB chunks, use robust cache check,
  call complete_download() on Whisper download success
- Set clean version as default when effects chain validation fails
- Return explicit error when Windows port occupied by non-voicebox process
2026-03-16 03:12:01 -07:00

75 lines
2.3 KiB
Python

"""Transcription endpoints."""
import asyncio
import tempfile
from pathlib import Path
from fastapi import APIRouter, File, Form, HTTPException, UploadFile
from .. import models
from ..services import transcribe
from ..services.task_queue import create_background_task
from ..utils.tasks import get_task_manager
router = APIRouter()
UPLOAD_CHUNK_SIZE = 1024 * 1024 # 1MB
@router.post("/transcribe", response_model=models.TranscriptionResponse)
async def transcribe_audio(
file: UploadFile = File(...),
language: str | None = Form(None),
):
"""Transcribe audio file to text."""
with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as tmp:
while chunk := await file.read(UPLOAD_CHUNK_SIZE):
tmp.write(chunk)
tmp_path = tmp.name
try:
from ..utils.audio import load_audio
audio, sr = await asyncio.to_thread(load_audio, tmp_path)
duration = len(audio) / sr
whisper_model = transcribe.get_whisper_model()
model_size = whisper_model.model_size
if not whisper_model.is_loaded() and not whisper_model._is_model_cached(model_size):
progress_model_name = f"whisper-{model_size}"
task_manager = get_task_manager()
async def download_whisper_background():
try:
await whisper_model.load_model_async(model_size)
task_manager.complete_download(progress_model_name)
except Exception as e:
task_manager.error_download(progress_model_name, str(e))
task_manager.start_download(progress_model_name)
create_background_task(download_whisper_background())
raise HTTPException(
status_code=202,
detail={
"message": f"Whisper model {model_size} is being downloaded. Please wait and try again.",
"model_name": progress_model_name,
"downloading": True,
},
)
text = await whisper_model.transcribe(tmp_path, language)
return models.TranscriptionResponse(
text=text,
duration=duration,
)
except HTTPException:
raise
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
finally:
Path(tmp_path).unlink(missing_ok=True)