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from PIL import Image
import numpy as np

from modules import scripts_postprocessing, codeformer_model
import gradio as gr

from modules.ui_components import FormRow


class ScriptPostprocessingCodeFormer(scripts_postprocessing.ScriptPostprocessing):
    name = "CodeFormer"
    order = 3000

    def ui(self):
        with FormRow():
            codeformer_visibility = gr.Slider(minimum=0.0, maximum=1.0, step=0.001, label="CodeFormer visibility", value=0, elem_id="extras_codeformer_visibility")
            codeformer_weight = gr.Slider(minimum=0.0, maximum=1.0, step=0.001, label="CodeFormer weight (0 = maximum effect, 1 = minimum effect)", value=0, elem_id="extras_codeformer_weight")

        return {
            "codeformer_visibility": codeformer_visibility,
            "codeformer_weight": codeformer_weight,
        }

    def process(self, pp: scripts_postprocessing.PostprocessedImage, codeformer_visibility, codeformer_weight):
        if codeformer_visibility == 0:
            return

        restored_img = codeformer_model.codeformer.restore(np.array(pp.image, dtype=np.uint8), w=codeformer_weight)
        res = Image.fromarray(restored_img)

        if codeformer_visibility < 1.0:
            res = Image.blend(pp.image, res, codeformer_visibility)

        pp.image = res
        pp.info["CodeFormer visibility"] = round(codeformer_visibility, 3)
        pp.info["CodeFormer weight"] = round(codeformer_weight, 3)