app.py

import gradio as gr
from PIL import Image
from huggingface_hub import InferenceClient
import io

# Stable AI upscaler model
client = InferenceClient(
    model="caidas/swin2SR-classical-sr-x2-64"
)

def upscale_image(img):
    img = img.convert("RGB")

    buffer = io.BytesIO()
    img.save(buffer, format="PNG")

    # REAL HF inference call (correct method)
    result = client.image_to_image(buffer.getvalue())

    return Image.open(io.BytesIO(result))

demo = gr.Interface(
    fn=upscale_image,
    inputs=gr.Image(type="pil"),
    outputs=gr.Image(),
    title="AI Upscaler"
)

demo.launch()