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Dockerfile

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+FROM python:3.9-slim
+WORKDIR /app
+COPY . .
+RUN pip install -r requirements.txt
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]

app.py

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+from fastapi import FastAPI, Query
+import requests
+
+app = FastAPI()
+
+GRADIO_API = "https://buchi-stdesign-sbv2-editor-demo.hf.space/run/predict"
+GRADIO_FILE_BASE = "https://buchi-stdesign-sbv2-editor-demo.hf.space/file"
+
+@app.get("/voice")
+def get_voice(text: str = Query(...), style: str = "小春音アミ"):
+    payload = {
+        "data": [text, style, 1.0, 1.0, 0.5]
+    }
+    headers = {"Content-Type": "application/json"}
+    res = requests.post(GRADIO_API, json=payload, headers=headers)
+    
+    if res.status_code != 200:
+        return {"error": "Gradio backend error", "detail": res.text}
+    
+    result = res.json()
+    wav_path = result["data"][0]  # tmp/audio.wav
+    wav_url = f"{GRADIO_FILE_BASE}/{wav_path}"
+    
+    return {"audio_url": wav_url}

requirements.txt

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+fastapi
+uvicorn
+requests