ComfyUI/custom_nodes/comfyui_controlnet_aux/node_wrappers/lineart.py

from ..utils import common_annotator_call, create_node_input_types
import comfy.model_management as model_management

class LineArt_Preprocessor:
    @classmethod
    def INPUT_TYPES(s):
        return create_node_input_types(
            coarse=(["disable", "enable"], {"default": "disable"})
        )

    RETURN_TYPES = ("IMAGE",)
    FUNCTION = "execute"

    CATEGORY = "ControlNet Preprocessors/Line Extractors"

    def execute(self, image, resolution=512, **kwargs):
        from controlnet_aux.lineart import LineartDetector

        model = LineartDetector.from_pretrained().to(model_management.get_torch_device())
        out = common_annotator_call(model, image, resolution=resolution, coarse = kwargs["coarse"] == "enable")
        del model
        return (out, )

NODE_CLASS_MAPPINGS = {
    "LineArtPreprocessor": LineArt_Preprocessor
}
NODE_DISPLAY_NAME_MAPPINGS = {
    "LineArtPreprocessor": "Realistic Lineart"
}