Update app.py
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app.py
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from fastapi import FastAPI, HTTPException
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from pydantic import BaseModel
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from transformers import AutoTokenizer, AutoModelForTextToWaveform
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import torch
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from scipy.io.wavfile import write
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import numpy as np
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import uuid
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import os
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app = FastAPI()
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# Load model and tokenizer
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model_name = "facebook/musicgen-small"
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tokenizer = AutoTokenizer.from_pretrained(model_name)
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model = AutoModelForTextToWaveform.from_pretrained(model_name)
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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model.to(device)
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# Directory to save generated audio files
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OUTPUT_DIR = "generated_audio"
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os.makedirs(OUTPUT_DIR, exist_ok=True)
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class MusicRequest(BaseModel):
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prompt: str
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@app.post("/generate-music/")
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def generate_music(request: MusicRequest):
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try:
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inputs = tokenizer(request.prompt, return_tensors="pt").to(device)
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with torch.no_grad():
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audio_values = model.generate(**inputs)
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sampling_rate = model.config.sampling_rate
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audio_values = audio_values.cpu().numpy().squeeze()
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# Generate a unique filename
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file_id = str(uuid.uuid4())[:8]
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output_wav_path = os.path.join(OUTPUT_DIR, f"music_{file_id}.wav")
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# Save audio file
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write(output_wav_path, sampling_rate, np.int16(audio_values * 32767))
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return {"message": "Music generated successfully", "file_path": output_wav_path}
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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@app.get("/")
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def root():
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return {"message": "Welcome to the Music Generation API"}
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