app.py

import gradio as gr
import torch
import numpy as np
import spaces
from PIL import Image
from huggingface_hub import hf_hub_download
from utils import utils, tools, preprocess

VAE_PATH = "madebyollin/sdxl-vae-fp16-fix"
REPO_ID = "Pbihao/ControlNeXt"
UNET_FILENAME = "ControlAny-SDXL/anime_canny/unet.safetensors"
CONTROLNET_FILENAME = "ControlAny-SDXL/anime_canny/controlnet.safetensors"
CACHE_DIR = None

DEFAULT_PROMPT = ""
DEFAULT_NEGATIVE_PROMPT = "worst quality, abstract, clumsy pose, deformed hand, dynamic malformation, fused fingers, extra digits, fewer digits, fewer fingers, extra fingers, extra arm, missing arm, extra leg, missing leg, signature, artist name, multi views, disfigured, ugly"


def ui():
    device = "cuda" if torch.cuda.is_available() else "cpu"
    model_file = hf_hub_download(
        repo_id='neta-art/neta-xl-2.0',
        filename='neta-xl-v2.fp16.safetensors',
        cache_dir=CACHE_DIR,
    )
    unet_file = hf_hub_download(
        repo_id=REPO_ID,
        filename=UNET_FILENAME,
        cache_dir=CACHE_DIR,
    )
    controlnet_file = hf_hub_download(
        repo_id=REPO_ID,
        filename=CONTROLNET_FILENAME,
        cache_dir=CACHE_DIR,
    )

    pipeline = tools.get_pipeline(
        pretrained_model_name_or_path=model_file,
        unet_model_name_or_path=unet_file,
        controlnet_model_name_or_path=controlnet_file,
        vae_model_name_or_path=VAE_PATH,
        load_weight_increasement=True,
        device=device,
        hf_cache_dir=CACHE_DIR,
        use_safetensors=True,
    )

    preprocessors = ['canny']
    schedulers = ['Euler A', 'UniPC', 'Euler', 'DDIM', 'DDPM']

    css = """
    #col-container {
        margin: 0 auto;
        max-width: 520px;
    }
    """

    with gr.Blocks(css=css) as demo:
        gr.Markdown(f"""
        # [ControlNeXt-SDXL](https://github.com/dvlab-research/ControlNeXt) Demo
        Base model: [Neta-Art-XL-2.0](https://civitai.com/models/410737/neta-art-xl)
        """)
        with gr.Row():
            with gr.Column(scale=9):
                prompt = gr.Textbox(label='Prompt', value=DEFAULT_PROMPT, lines=3, placeholder='prompt', container=False)
                negative_prompt = gr.Textbox(label='Negative Prompt', value=DEFAULT_NEGATIVE_PROMPT, lines=3, placeholder='negative prompt', container=False)
            with gr.Column(scale=1):
                generate_button = gr.Button("Generate", variant='primary', min_width=96)
        with gr.Row():
            with gr.Column(scale=1):
                with gr.Row():
                    control_image = gr.Image(
                        value=None,
                        label='Condition',
                        sources=['upload'],
                        type='pil',
                        height=512,
                        image_mode='RGB',
                        format='png',
                        show_download_button=True,
                        show_share_button=True,
                    )
                with gr.Row():
                    processor = gr.Dropdown(
                        label='Image Preprocessor',
                        choices=preprocessors,
                        value='canny',
                    )
                    process_button = gr.Button("Process", variant='primary', min_width=96, scale=0)
                with gr.Row():
                    scheduler = gr.Dropdown(
                        label='Scheduler',
                        choices=schedulers,
                        value='Euler A',
                        multiselect=False,
                        allow_custom_value=False,
                        filterable=True,
                    )
                    num_inference_steps = gr.Slider(minimum=1, maximum=100, step=1, value=28, label='Steps')
                with gr.Row():
                    cfg_scale = gr.Slider(minimum=1, maximum=30, step=1, value=7.5, label='CFG Scale')
                    controlnet_scale = gr.Slider(minimum=0, maximum=1, step=0.01, value=0.35, label='ControlNet Scale')
                with gr.Row():
                    seed = gr.Number(label='Seed', step=1, precision=0, value=-1)
            with gr.Column(scale=1):
                with gr.Row():
                    output = gr.Gallery(
                        label='Output',
                        value=None,
                        object_fit='scale-down',
                        columns=4,
                        height=512,
                        show_download_button=True,
                        show_share_button=True,
                    )

                with gr.Row():
                    examples = gr.Examples(
                        label='Examples',
                        examples=[
                            [
                                'best quality, 1girl, solo, open hand, outdoors, street',
                                'examples/example_1.jpg',
                            ],
                        ],
                        inputs=[
                            prompt,
                            control_image,
                        ],
                        cache_examples=False,
                    )

        @spaces.GPU
        def generate(
            prompt,
            control_image,
            negative_prompt,
            cfg_scale,
            controlnet_scale,
            num_inference_steps,
            scheduler,
            seed,
        ):
            pipeline.scheduler = tools.get_scheduler(scheduler, pipeline.scheduler.config)

            generator = torch.Generator(device=device).manual_seed(max(0, min(seed, np.iinfo(np.int32).max))) if seed != -1 else None

            if control_image is None:
                raise gr.Error('Please upload an image.')
            width, height = utils.around_reso(control_image.width, control_image.height, reso=1024, max_width=2048, max_height=2048, divisible=32)
            control_image = control_image.resize((width, height)).convert('RGB')

            with torch.autocast(device):
                output_images = pipeline.__call__(
                    prompt=prompt,
                    negative_prompt=negative_prompt,
                    controlnet_image=control_image,
                    controlnet_scale=controlnet_scale,
                    width=width,
                    height=height,
                    generator=generator,
                    guidance_scale=cfg_scale,
                    num_inference_steps=num_inference_steps,
                ).images

            return output_images

        def process(
            image,
            processor,
        ):
            if image is None:
                raise gr.Error('Please upload an image.')
            processor = preprocess.get_extractor(processor)
            image = processor(image)
            return image

        generate_button.click(
            fn=generate,
            inputs=[prompt, control_image, negative_prompt, cfg_scale, controlnet_scale, num_inference_steps, scheduler, seed],
            outputs=[output],
        )

        process_button.click(
            fn=process,
            inputs=[control_image, processor],
            outputs=[control_image],
        )

    return demo


if __name__ == '__main__':
    demo = ui()
    demo.queue().launch()