app_zero.py

import sys
import types
import datetime
import re
from pathlib import Path

import huggingface_hub

# -------------------------------------------------------------------
# Compatibility shim: older diffusers may still expect cached_download
# -------------------------------------------------------------------
if not hasattr(huggingface_hub, "cached_download"):
    def cached_download(*args, **kwargs):
        return huggingface_hub.hf_hub_download(*args, **kwargs)
    huggingface_hub.cached_download = cached_download

import torch
import numpy as np
import einops
import spaces
import gradio as gr

from PIL import Image
from torchvision import transforms
import torch.nn.functional as F
from torchvision.models import resnet50, ResNet50_Weights

from pytorch_lightning import seed_everything
from transformers import CLIPTextModel, CLIPTokenizer, CLIPImageProcessor
from diffusers import (
    AutoencoderKL,
    DDIMScheduler,
    PNDMScheduler,
    DPMSolverMultistepScheduler,
    UniPCMultistepScheduler,
)

# -------------------------------------------------------------------
# GPU spoof for Spaces env compatibility
# -------------------------------------------------------------------
torch.cuda.get_device_capability = lambda *args, **kwargs: (8, 6)
torch.cuda.get_device_properties = lambda *args, **kwargs: types.SimpleNamespace(
    name="NVIDIA A10G",
    major=8,
    minor=6,
    total_memory=23836033024,
    multi_processor_count=80,
)

# -------------------------------------------------------------------
# Download required assets
# -------------------------------------------------------------------
huggingface_hub.snapshot_download(
    repo_id="camenduru/PASD",
    allow_patterns=[
        "pasd/**",
        "pasd_light/**",
        "pasd_light_rrdb/**",
        "pasd_rrdb/**",
    ],
    local_dir="PASD/runs",
)

huggingface_hub.hf_hub_download(
    repo_id="camenduru/PASD",
    filename="majicmixRealistic_v6.safetensors",
    local_dir="PASD/checkpoints/personalized_models",
)

huggingface_hub.hf_hub_download(
    repo_id="akhaliq/RetinaFace-R50",
    filename="RetinaFace-R50.pth",
    local_dir="PASD/annotator/ckpts",
)

# -------------------------------------------------------------------
# PASD local path
# -------------------------------------------------------------------
sys.path.append("./PASD")


# -------------------------------------------------------------------
# Runtime patching helpers
# -------------------------------------------------------------------
def patch_file(path_str: str, replacements: list[tuple[str, str]]) -> None:
    path = Path(path_str)
    if not path.exists():
        print(f"[patch] file not found: {path}")
        return

    try:
        text = path.read_text(encoding="utf-8")
    except Exception as e:
        print(f"[patch] failed reading {path}: {e}")
        return

    original = text
    for old, new in replacements:
        text = text.replace(old, new)

    if text != original:
        try:
            path.write_text(text, encoding="utf-8")
            print(f"[patch] updated: {path}")
        except Exception as e:
            print(f"[patch] failed writing {path}: {e}")
    else:
        print(f"[patch] no changes: {path}")


def patch_controlnet_loader_import(path_str: str) -> None:
    path = Path(path_str)
    if not path.exists():
        print(f"[patch] file not found: {path}")
        return

    try:
        text = path.read_text(encoding="utf-8")
    except Exception as e:
        print(f"[patch] failed reading {path}: {e}")
        return

    safe_block = """try:
    from diffusers.loaders import FromOriginalControlNetMixin as FromOriginalControlnetMixin
except Exception:
    try:
        from diffusers.loaders import FromOriginalControlnetMixin
    except Exception:
        class FromOriginalControlnetMixin:
            pass

"""

    original = text

    # Enlève d'anciens imports simples
    text = re.sub(
        r"(?m)^from diffusers\.loaders[^\n]*FromOriginalControl\w*Mixin[^\n]*\n",
        "",
        text,
    )
    text = re.sub(
        r"(?m)^from diffusers\.loaders\.single_file_model[^\n]*FromOriginal\w+[^\n]*\n",
        "",
        text,
    )

    # Enlève d'anciens blocs try/except cassés liés à ce mixin
    text = re.sub(
        r"(?ms)^try:\n(?:(?:    |\t).*\n)+?except Exception:\n(?:(?:    |\t).*\n)+?(?=^(?:class|def|@|from |import |\Z))",
        lambda m: "" if "FromOriginalControl" in m.group(0) else m.group(0),
        text,
    )

    # Normalise la référence de mixin dans le reste du fichier
    text = text.replace("FromOriginalControlNetMixin", "FromOriginalControlnetMixin")

    marker = "class ControlNetConditioningEmbedding"
    if safe_block not in text:
        idx = text.find(marker)
        if idx != -1:
            text = text[:idx] + safe_block + text[idx:]
        else:
            text = safe_block + text

    if text != original:
        try:
            path.write_text(text, encoding="utf-8")
            print(f"[patch] normalized: {path}")
        except Exception as e:
            print(f"[patch] failed writing {path}: {e}")
    else:
        print(f"[patch] no changes: {path}")


def patch_pasd_for_diffusers() -> None:
    # pipeline_utils path moved
    patch_file(
        "./PASD/pipelines/pipeline_pasd.py",
        [
            (
                "from diffusers.pipeline_utils import DiffusionPipeline",
                "from diffusers import DiffusionPipeline",
            ),
        ],
    )

    # PositionNet -> GLIGENTextBoundingboxProjection alias
    patch_file(
        "./PASD/models/pasd/unet_2d_condition.py",
        [
            ("    PositionNet,\n", ""),
            (
                "    GLIGENTextBoundingboxProjection,\n",
                "    GLIGENTextBoundingboxProjection as PositionNet,\n",
            ),
        ],
    )

    # internal module paths moved in newer diffusers
    patch_file(
        "./PASD/models/pasd/unet_2d_blocks.py",
        [
            (
                "from diffusers.models.attention import AdaGroupNorm",
                "from diffusers.models.normalization import AdaGroupNorm",
            ),
            (
                "from diffusers.models.dual_transformer_2d import DualTransformer2DModel",
                "from diffusers.models.transformers.dual_transformer_2d import DualTransformer2DModel",
            ),
            (
                "from diffusers.models.transformer_2d import Transformer2DModel",
                "from diffusers.models.transformers.transformer_2d import Transformer2DModel",
            ),
        ],
    )

    # robust controlnet patch
    patch_controlnet_loader_import("./PASD/models/pasd/controlnet.py")


patch_pasd_for_diffusers()

# -------------------------------------------------------------------
# Import PASD modules only after patching
# -------------------------------------------------------------------
from pipelines.pipeline_pasd import StableDiffusionControlNetPipeline
from myutils.misc import load_dreambooth_lora
from myutils.wavelet_color_fix import wavelet_color_fix
from annotator.retinaface import RetinaFaceDetection

use_pasd_light = False
face_detector = RetinaFaceDetection()

if use_pasd_light:
    from models.pasd_light.unet_2d_condition import UNet2DConditionModel
    from models.pasd_light.controlnet import ControlNetModel
else:
    from models.pasd.unet_2d_condition import UNet2DConditionModel
    from models.pasd.controlnet import ControlNetModel

# -------------------------------------------------------------------
# Model setup
# -------------------------------------------------------------------
pretrained_model_path = "stable-diffusion-v1-5/stable-diffusion-v1-5"
ckpt_path = "PASD/runs/pasd/checkpoint-100000"
dreambooth_lora_path = "PASD/checkpoints/personalized_models/majicmixRealistic_v6.safetensors"

weight_dtype = torch.float16
device = "cuda"

scheduler = UniPCMultistepScheduler.from_pretrained(
    pretrained_model_path, subfolder="scheduler"
)
text_encoder = CLIPTextModel.from_pretrained(
    pretrained_model_path, subfolder="text_encoder"
)
tokenizer = CLIPTokenizer.from_pretrained(
    pretrained_model_path, subfolder="tokenizer"
)
vae = AutoencoderKL.from_pretrained(
    pretrained_model_path, subfolder="vae"
)
feature_extractor = CLIPImageProcessor.from_pretrained(
    pretrained_model_path, subfolder="feature_extractor"
)
unet = UNet2DConditionModel.from_pretrained(
    ckpt_path, subfolder="unet"
)
controlnet = ControlNetModel.from_pretrained(
    ckpt_path, subfolder="controlnet"
)

vae.requires_grad_(False)
text_encoder.requires_grad_(False)
unet.requires_grad_(False)
controlnet.requires_grad_(False)

unet, vae, text_encoder = load_dreambooth_lora(
    unet, vae, text_encoder, dreambooth_lora_path
)

text_encoder.to(device, dtype=weight_dtype)
vae.to(device, dtype=weight_dtype)
unet.to(device, dtype=weight_dtype)
controlnet.to(device, dtype=weight_dtype)

validation_pipeline = StableDiffusionControlNetPipeline(
    vae=vae,
    text_encoder=text_encoder,
    tokenizer=tokenizer,
    feature_extractor=feature_extractor,
    unet=unet,
    controlnet=controlnet,
    scheduler=scheduler,
    safety_checker=None,
    requires_safety_checker=False,
)

validation_pipeline._init_tiled_vae(decoder_tile_size=224)

# -------------------------------------------------------------------
# ResNet helper
# -------------------------------------------------------------------
weights = ResNet50_Weights.DEFAULT
preprocess = weights.transforms()
resnet = resnet50(weights=weights)
resnet.eval()


def resize_image(image_path: str, target_height: int) -> Image.Image:
    with Image.open(image_path) as img:
        ratio = target_height / float(img.size[1])
        new_width = int(float(img.size[0]) * ratio)
        return img.resize((new_width, target_height), Image.LANCZOS)


@spaces.GPU(enable_queue=True)
def inference(
    input_image,
    prompt,
    a_prompt,
    n_prompt,
    denoise_steps,
    upscale,
    alpha,
    cfg,
    seed,
    progress=gr.Progress(track_tqdm=True)
):
    if seed == -1:
        seed = 0

    input_image = resize_image(input_image, 512)
    timestamp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")

    with torch.no_grad():
        seed_everything(seed)
        generator = torch.Generator(device=device)
        generator.manual_seed(seed)

        input_image = input_image.convert("RGB")

        batch = preprocess(input_image).unsqueeze(0)
        prediction = resnet(batch).squeeze(0).softmax(0)
        class_id = prediction.argmax().item()
        score = prediction[class_id].item()
        category_name = weights.meta["categories"][class_id]

        if score >= 0.1:
            prompt += f"{category_name}" if prompt == "" else f", {category_name}"

        prompt = a_prompt if prompt == "" else f"{prompt}, {a_prompt}"

        ori_width, ori_height = input_image.size

        rscale = upscale
        input_image = input_image.resize(
            (input_image.size[0] * rscale, input_image.size[1] * rscale)
        )
        input_image = input_image.resize(
            (input_image.size[0] // 8 * 8, input_image.size[1] // 8 * 8)
        )
        width, height = input_image.size

        try:
            image = validation_pipeline(
                None,
                prompt,
                input_image,
                num_inference_steps=denoise_steps,
                generator=generator,
                height=height,
                width=width,
                guidance_scale=cfg,
                negative_prompt=n_prompt,
                conditioning_scale=alpha,
                eta=0.0,
            ).images[0]

            image = wavelet_color_fix(image, input_image)
            image = image.resize((ori_width * rscale, ori_height * rscale))
        except Exception as e:
            print(f"[inference] error: {e}")
            image = Image.new(mode="RGB", size=(512, 512))

    result_path = f"result_{timestamp}.jpg"
    input_path = f"input_{timestamp}.jpg"

    image.save(result_path, "JPEG")
    input_image.save(input_path, "JPEG")

    return input_path, result_path, result_path


css = """
#col-container{
    margin: 0 auto;
    max-width: 720px;
}
#project-links{
    margin: 0 0 12px !important;
    column-gap: 8px;
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    flex-direction: row;
    align-items: center;
}
"""

with gr.Blocks() as demo:
    with gr.Column(elem_id="col-container"):
        gr.HTML("""
        <h2 style="text-align: center;">
            PASD Magnify
        </h2>
        <p style="text-align: center;">
            Pixel-Aware Stable Diffusion for Realistic Image Super-resolution and Personalized Stylization
        </p>
        <p id="project-links" align="center">
            <a href="https://github.com/yangxy/PASD"><img src="https://img.shields.io/badge/Project-Page-Green"></a>
            <a href="https://huggingface.co/papers/2308.14469"><img src="https://img.shields.io/badge/Paper-Arxiv-red"></a>
        </p>
        <p style="margin:12px auto;display: flex;justify-content: center;">
            <a href="https://huggingface.co/spaces/fffiloni/PASD?duplicate=true">
                <img src="https://huggingface.co/datasets/huggingface/badges/resolve/main/duplicate-this-space-lg.svg" alt="Duplicate this Space">
            </a>
        </p>
        """)

        with gr.Row():
            with gr.Column():
                input_image = gr.Image(
                    type="filepath",
                    sources=["upload"],
                    value="PASD/samples/frog.png",
                    label="Input image",
                )
                prompt_in = gr.Textbox(label="Prompt", value="Frog")

                with gr.Accordion(label="Advanced settings", open=False):
                    added_prompt = gr.Textbox(
                        label="Added Prompt",
                        value="clean, high-resolution, 8k, best quality, masterpiece",
                    )
                    neg_prompt = gr.Textbox(
                        label="Negative Prompt",
                        value="dotted, noise, blur, lowres, oversmooth, longbody, bad anatomy, bad hands, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality",
                    )
                    denoise_steps = gr.Slider(
                        label="Denoise Steps",
                        minimum=10,
                        maximum=50,
                        value=20,
                        step=1,
                    )
                    upsample_scale = gr.Slider(
                        label="Upsample Scale",
                        minimum=1,
                        maximum=4,
                        value=2,
                        step=1,
                    )
                    condition_scale = gr.Slider(
                        label="Conditioning Scale",
                        minimum=0.5,
                        maximum=1.5,
                        value=1.1,
                        step=0.1,
                    )
                    classifier_free_guidance = gr.Slider(
                        label="Classifier-free Guidance",
                        minimum=0.1,
                        maximum=10.0,
                        value=7.5,
                        step=0.1,
                    )
                    seed = gr.Slider(
                        label="Seed",
                        minimum=-1,
                        maximum=2147483647,
                        step=1,
                        randomize=True,
                    )

                submit_btn = gr.Button("Submit")

            with gr.Column():
                before_img = gr.Image(label="Input")
                after_img = gr.Image(label="Result")
                file_output = gr.File(label="Downloadable image result")

    submit_btn.click(
        fn=inference,
        inputs=[
            input_image,
            prompt_in,
            added_prompt,
            neg_prompt,
            denoise_steps,
            upsample_scale,
            condition_scale,
            classifier_free_guidance,
            seed,
        ],
        outputs=[
            before_img,
            after_img,
            file_output,
        ],
        api_visibility="private",
    )

demo.queue(max_size=10).launch(
    ssr_mode=False,
    mcp_server=False,
    css=css,
)