standalone preprocessor node for inpaint cnet

InpaintPreprocessor.py

import torch

class Inpaint_Preprocessor:
    @classmethod
    def INPUT_TYPES(s):
        return {"required": { "image": ("IMAGE",), "mask": ("MASK",)}}
    RETURN_TYPES = ("IMAGE",)
    FUNCTION = "preprocess"

    CATEGORY = "preprocessors/inpaint"

    def preprocess(self, image, mask):
        mask = torch.nn.functional.interpolate(mask.reshape((-1, 1, mask.shape[-2], mask.shape[-1])), size=(image.shape[1], image.shape[2]), mode="bilinear")
        mask = mask.movedim(1,-1).expand((-1,-1,-1,3))
        image = image.clone()
        image[mask > 0.5] = -1.0  # set as masked pixel
        return (image, )
    
NODE_CLASS_MAPPINGS = {
    "InpaintPreprocessor": Inpaint_Preprocessor,
}