app.py

import spaces
from typing import Tuple, Union, List
import os
import time
import numpy as np
from PIL import Image
import requests
import torch

from diffusers import StableDiffusionControlNetImg2ImgPipeline, ControlNetModel, DDIMScheduler
from diffusers.pipelines.stable_diffusion import StableDiffusionSafetyChecker
from diffusers.models import AutoencoderKL
from diffusers.models.attention_processor import AttnProcessor2_0
from diffusers.pipelines.controlnet import StableDiffusionControlNetInpaintPipeline
from diffusers import ControlNetModel, UniPCMultistepScheduler, AutoPipelineForText2Image
from transformers import AutoImageProcessor, UperNetForSemanticSegmentation, AutoModelForDepthEstimation
from colors import ade_palette
from utils import map_colors_rgb
from diffusers import StableDiffusionXLPipeline
import gradio as gr
import gc

device = "cuda"
dtype = torch.float16

        
css = """
#img-display-container {
    max-height: 50vh;
    }
#img-display-input {
    max-height: 40vh;
    }
#img-display-output {
    max-height: 40vh;
    }

"""


def download_file(url, folder_path, filename):
    if not os.path.exists(folder_path):
        os.makedirs(folder_path)
    file_path = os.path.join(folder_path, filename)

    if os.path.isfile(file_path):
        print(f"File already exists: {file_path}")
    else:
        response = requests.get(url, stream=True)
        if response.status_code == 200:
            with open(file_path, 'wb') as file:
                for chunk in response.iter_content(chunk_size=1024):
                    file.write(chunk)
            print(f"File successfully downloaded and saved: {file_path}")
        else:
            print(f"Error downloading the file. Status code: {response.status_code}")

def download_models():
    models = {
        "MODEL": ("https://huggingface.co/dantea1118/juggernaut_reborn/resolve/main/juggernaut_reborn.safetensors?download=true", "models/models/Stable-diffusion", "juggernaut_reborn.safetensors"),
        "UPSCALER_X2": ("https://huggingface.co/ai-forever/Real-ESRGAN/resolve/main/RealESRGAN_x2.pth?download=true", "models/upscalers/", "RealESRGAN_x2.pth"),
        "UPSCALER_X4": ("https://huggingface.co/ai-forever/Real-ESRGAN/resolve/main/RealESRGAN_x4.pth?download=true", "models/upscalers/", "RealESRGAN_x4.pth"),
        "NEGATIVE_1": ("https://huggingface.co/philz1337x/embeddings/resolve/main/verybadimagenegative_v1.3.pt?download=true", "models/embeddings", "verybadimagenegative_v1.3.pt"),
        "NEGATIVE_2": ("https://huggingface.co/datasets/AddictiveFuture/sd-negative-embeddings/resolve/main/JuggernautNegative-neg.pt?download=true", "models/embeddings", "JuggernautNegative-neg.pt"),
        "LORA_1": ("https://huggingface.co/philz1337x/loras/resolve/main/SDXLrender_v2.0.safetensors?download=true", "models/Lora", "SDXLrender_v2.0.safetensors"),
        "LORA_2": ("https://huggingface.co/philz1337x/loras/resolve/main/more_details.safetensors?download=true", "models/Lora", "more_details.safetensors"),
        "CONTROLNET": ("https://huggingface.co/lllyasviel/ControlNet-v1-1/resolve/main/control_v11f1e_sd15_tile.pth?download=true", "models/ControlNet", "control_v11f1e_sd15_tile.pth"),
        "VAE": ("https://huggingface.co/stabilityai/sd-vae-ft-mse-original/resolve/main/vae-ft-mse-840000-ema-pruned.safetensors?download=true", "models/VAE", "vae-ft-mse-840000-ema-pruned.safetensors"),
    }

    for model, (url, folder, filename) in models.items():
        download_file(url, folder, filename)



def timer_func(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f"{func.__name__} took {end_time - start_time:.2f} seconds")
        return result
    return wrapper

class LazyLoadPipeline:
    def __init__(self):
        self.pipe = None

    @timer_func
    def load(self):
        if self.pipe is None:
            print("Starting to load the pipeline...")
            self.pipe = self.setup_pipeline()
            print(f"Moving pipeline to device: {device}")
            self.pipe.to(device)
            if USE_TORCH_COMPILE:
                print("Compiling the model...")
                self.pipe.unet = torch.compile(self.pipe.unet, mode="reduce-overhead", fullgraph=True)

    @timer_func
    def setup_pipeline(self):
        print("Setting up the pipeline...")
        controlnet = ControlNetModel.from_single_file(
            "models/ControlNet/control_v11f1e_sd15_tile.pth", torch_dtype=torch.float16
        )
        safety_checker = StableDiffusionSafetyChecker.from_pretrained("CompVis/stable-diffusion-safety-checker")
        model_path = "models/models/Stable-diffusion/juggernaut_reborn.safetensors"
        pipe = StableDiffusionControlNetImg2ImgPipeline.from_single_file(
            model_path,
            controlnet=controlnet,
            torch_dtype=torch.float16,
            use_safetensors=True,
            safety_checker=safety_checker
        )
        vae = AutoencoderKL.from_single_file(
            "models/VAE/vae-ft-mse-840000-ema-pruned.safetensors",
            torch_dtype=torch.float16
        )
        pipe.vae = vae
        pipe.load_textual_inversion("models/embeddings/verybadimagenegative_v1.3.pt")
        pipe.load_textual_inversion("models/embeddings/JuggernautNegative-neg.pt")
        pipe.load_lora_weights("models/Lora/SDXLrender_v2.0.safetensors")
        pipe.fuse_lora(lora_scale=0.5)
        pipe.load_lora_weights("models/Lora/more_details.safetensors")
        pipe.fuse_lora(lora_scale=1.)
        pipe.scheduler = DDIMScheduler.from_config(pipe.scheduler.config)
        pipe.enable_freeu(s1=0.9, s2=0.2, b1=1.3, b2=1.4)
        return pipe

    def __call__(self, *args, **kwargs):
        return self.pipe(*args, **kwargs)

class LazyRealESRGAN:
    def __init__(self, device, scale):
        self.device = device
        self.scale = scale
        self.model = None

    def load_model(self):
        if self.model is None:
            self.model = RealESRGAN(self.device, scale=self.scale)
            self.model.load_weights(f'models/upscalers/RealESRGAN_x{self.scale}.pth', download=False)
    def predict(self, img):
        self.load_model()
        return self.model.predict(img)

@timer_func
def resize_and_upscale(input_image, resolution):
    scale = 2 if resolution <= 2048 else 4
    input_image = input_image.convert("RGB")
    W, H = input_image.size
    k = float(resolution) / min(H, W)
    H = int(round(H * k / 64.0)) * 64
    W = int(round(W * k / 64.0)) * 64
    img = input_image.resize((W, H), resample=Image.LANCZOS)
    if scale == 2:
        img = lazy_realesrgan_x2.predict(img)
    else:
        img = lazy_realesrgan_x4.predict(img)
    return img

@timer_func
def create_hdr_effect(original_image, hdr):
    if hdr == 0:
        return original_image
    cv_original = cv2.cvtColor(np.array(original_image), cv2.COLOR_RGB2BGR)
    factors = [1.0 - 0.9 * hdr, 1.0 - 0.7 * hdr, 1.0 - 0.45 * hdr,
               1.0 - 0.25 * hdr, 1.0, 1.0 + 0.2 * hdr,
               1.0 + 0.4 * hdr, 1.0 + 0.6 * hdr, 1.0 + 0.8 * hdr]
    images = [cv2.convertScaleAbs(cv_original, alpha=factor) for factor in factors]
    merge_mertens = cv2.createMergeMertens()
    hdr_image = merge_mertens.process(images)
    hdr_image_8bit = np.clip(hdr_image * 255, 0, 255).astype('uint8')
    return Image.fromarray(cv2.cvtColor(hdr_image_8bit, cv2.COLOR_BGR2RGB))



def prepare_image(input_image, resolution, hdr):
    condition_image = resize_and_upscale(input_image, resolution)
    condition_image = create_hdr_effect(condition_image, hdr)
    return condition_image

@spaces.GPU
@timer_func
def gradio_process_image(input_image, resolution, num_inference_steps, strength, hdr, guidance_scale):
    print("Starting image processing...")
    torch.cuda.empty_cache()
    
    condition_image = prepare_image(input_image, resolution, hdr)
    
    prompt = "masterpiece, best quality, highres"
    negative_prompt = "low quality, normal quality, ugly, blurry, blur, lowres, bad anatomy, bad hands, cropped, worst quality, verybadimagenegative_v1.3, JuggernautNegative-neg"
    
    options = {
        "prompt": prompt,
        "negative_prompt": negative_prompt,
        "image": condition_image,
        "control_image": condition_image,
        "width": condition_image.size[0],
        "height": condition_image.size[1],
        "strength": strength,
        "num_inference_steps": num_inference_steps,
        "guidance_scale": guidance_scale,
        "generator": torch.Generator(device=device).manual_seed(0),
    }
    
    print("Running inference...")
    result = lazy_pipe(**options).images[0]
    print("Image processing completed successfully")
    
    # Convert input_image and result to numpy arrays
    input_array = np.array(input_image)
    result_array = np.array(result)
    
    return [input_array, result_array]
    


def filter_items(
    colors_list: Union[List, np.ndarray],
    items_list: Union[List, np.ndarray],
    items_to_remove: Union[List, np.ndarray]
) -> Tuple[Union[List, np.ndarray], Union[List, np.ndarray]]:
    """
    Filters items and their corresponding colors from given lists, excluding
    specified items.

    Args:
        colors_list: A list or numpy array of colors corresponding to items.
        items_list: A list or numpy array of items.
        items_to_remove: A list or numpy array of items to be removed.

    Returns:
        A tuple of two lists or numpy arrays: filtered colors and filtered
        items.
    """
    filtered_colors = []
    filtered_items = []
    for color, item in zip(colors_list, items_list):
        if item not in items_to_remove:
            filtered_colors.append(color)
            filtered_items.append(item)
    return filtered_colors, filtered_items

def get_segmentation_pipeline(
) -> Tuple[AutoImageProcessor, UperNetForSemanticSegmentation]:
    """Method to load the segmentation pipeline
    Returns:
        Tuple[AutoImageProcessor, UperNetForSemanticSegmentation]: segmentation pipeline
    """
    image_processor = AutoImageProcessor.from_pretrained(
        "openmmlab/upernet-convnext-xlarge"
    )
    image_segmentor = UperNetForSemanticSegmentation.from_pretrained(
        "openmmlab/upernet-convnext-xlarge"
    )
    return image_processor, image_segmentor


@torch.inference_mode()
@spaces.GPU
def segment_image(
        image: Image,
        image_processor: AutoImageProcessor,
        image_segmentor: UperNetForSemanticSegmentation
) -> Image:
    """
    Segments an image using a semantic segmentation model.

    Args:
        image (Image): The input image to be segmented.
        image_processor (AutoImageProcessor): The processor to prepare the
            image for segmentation.
        image_segmentor (UperNetForSemanticSegmentation): The semantic
            segmentation model used to identify different segments in the image.

    Returns:
        Image: The segmented image with each segment colored differently based
            on its identified class.
    """
    # image_processor, image_segmentor = get_segmentation_pipeline()
    pixel_values = image_processor(image, return_tensors="pt").pixel_values
    with torch.no_grad():
        outputs = image_segmentor(pixel_values)

    seg = image_processor.post_process_semantic_segmentation(
        outputs, target_sizes=[image.size[::-1]])[0]
    color_seg = np.zeros((seg.shape[0], seg.shape[1], 3), dtype=np.uint8)
    palette = np.array(ade_palette())
    for label, color in enumerate(palette):
        color_seg[seg == label, :] = color
    color_seg = color_seg.astype(np.uint8)
    seg_image = Image.fromarray(color_seg).convert('RGB')
    return seg_image


def get_depth_pipeline():
    feature_extractor = AutoImageProcessor.from_pretrained("LiheYoung/depth-anything-large-hf",
                                                           torch_dtype=dtype)
    depth_estimator = AutoModelForDepthEstimation.from_pretrained("LiheYoung/depth-anything-large-hf",
                                                                  torch_dtype=dtype)
    return feature_extractor, depth_estimator


@torch.inference_mode()
@spaces.GPU
def get_depth_image(
        image: Image,
        feature_extractor: AutoImageProcessor,
        depth_estimator: AutoModelForDepthEstimation
) -> Image:
    image_to_depth = feature_extractor(images=image, return_tensors="pt").to(device)
    with torch.no_grad():
        depth_map = depth_estimator(**image_to_depth).predicted_depth

    width, height = image.size
    depth_map = torch.nn.functional.interpolate(
        depth_map.unsqueeze(1).float(),
        size=(height, width),
        mode="bicubic",
        align_corners=False,
    )
    depth_min = torch.amin(depth_map, dim=[1, 2, 3], keepdim=True)
    depth_max = torch.amax(depth_map, dim=[1, 2, 3], keepdim=True)
    depth_map = (depth_map - depth_min) / (depth_max - depth_min)
    image = torch.cat([depth_map] * 3, dim=1)

    image = image.permute(0, 2, 3, 1).cpu().numpy()[0]
    image = Image.fromarray((image * 255.0).clip(0, 255).astype(np.uint8))
    return image


def resize_dimensions(dimensions, target_size):
    """ 
    Resize PIL to target size while maintaining aspect ratio 
    If smaller than target size leave it as is
    """
    width, height = dimensions

    # Check if both dimensions are smaller than the target size
    if width < target_size and height < target_size:
        return dimensions

    # Determine the larger side
    if width > height:
        # Calculate the aspect ratio
        aspect_ratio = height / width
        # Resize dimensions
        return (target_size, int(target_size * aspect_ratio))
    else:
        # Calculate the aspect ratio
        aspect_ratio = width / height
        # Resize dimensions
        return (int(target_size * aspect_ratio), target_size)


def flush():
    gc.collect()
    torch.cuda.empty_cache()
    
    
class ControlNetDepthDesignModelMulti:
    """ Produces random noise images """
    
    def __init__(self):
        """ Initialize your model(s) here """
        #os.environ['HF_HUB_OFFLINE'] = "True"
        
        self.seed = 323*111
        self.neg_prompt = "window, door, low resolution, banner, logo, watermark, text, deformed, blurry, out of focus, surreal, ugly, beginner"
        self.control_items = ["windowpane;window", "door;double;door"]
        self.additional_quality_suffix = "interior design, 4K, high resolution, photorealistic"
        
    @spaces.GPU
    def generate_design(self, empty_room_image: Image, prompt: str, guidance_scale: int = 10, num_steps: int = 50, strength: float =0.9, img_size: int = 640) -> Image:
        """
        Given an image of an empty room and a prompt
        generate the designed room according to the prompt
        Inputs - 
            empty_room_image - An RGB PIL Image of the empty room
            prompt - Text describing the target design elements of the room
        Returns - 
            design_image - PIL Image of the same size as the empty room image
                           If the size is not the same the submission will fail.
        """
        print(prompt)
        flush()
        self.generator = torch.Generator(device=device).manual_seed(self.seed)

        pos_prompt = prompt + f', {self.additional_quality_suffix}'

        orig_w, orig_h = empty_room_image.size
        new_width, new_height = resize_dimensions(empty_room_image.size, img_size)
        input_image = empty_room_image.resize((new_width, new_height))
        real_seg = np.array(segment_image(input_image,
                                          seg_image_processor,
                                          image_segmentor))
        unique_colors = np.unique(real_seg.reshape(-1, real_seg.shape[2]), axis=0)
        unique_colors = [tuple(color) for color in unique_colors]
        segment_items = [map_colors_rgb(i) for i in unique_colors]
        chosen_colors, segment_items = filter_items(
            colors_list=unique_colors,
            items_list=segment_items,
            items_to_remove=self.control_items
        )
        mask = np.zeros_like(real_seg)
        for color in chosen_colors:
            color_matches = (real_seg == color).all(axis=2)
            mask[color_matches] = 1

        image_np = np.array(input_image)
        image = Image.fromarray(image_np).convert("RGB")
        mask_image = Image.fromarray((mask * 255).astype(np.uint8)).convert("RGB")
        segmentation_cond_image = Image.fromarray(real_seg).convert("RGB")

        image_depth = get_depth_image(image, depth_feature_extractor, depth_estimator)

        # generate image that would be used as IP-adapter
        flush()
        new_width_ip = int(new_width / 8) * 8
        new_height_ip = int(new_height / 8) * 8
        ip_image = guide_pipe(pos_prompt,
                                   num_inference_steps=num_steps,
                                   negative_prompt=self.neg_prompt,
                                   height=new_height_ip,
                                   width=new_width_ip,
                                   generator=[self.generator]).images[0]

        flush()
        generated_image = pipe(
            prompt=pos_prompt,
            negative_prompt=self.neg_prompt,
            num_inference_steps=num_steps,
            strength=strength,
            guidance_scale=guidance_scale,
            generator=[self.generator],
            image=image,
            mask_image=mask_image,
            ip_adapter_image=ip_image,
            control_image=[image_depth, segmentation_cond_image],
            controlnet_conditioning_scale=[0.5, 0.5]
        ).images[0]
        
        flush()
        design_image = generated_image.resize(
            (orig_w, orig_h), Image.Resampling.LANCZOS
        )
        
        return design_image

def create_demo(model):
    gr.Markdown("### Just try space ...")
    with gr.Row():
        with gr.Column():
            input_image = gr.Image(label="Input Image", type='pil', elem_id='img-display-input')
            input_text = gr.Textbox(label='Prompt', placeholder='Please upload your image first', lines=2)
            with gr.Accordion('Advanced options', open=False):
                num_steps = gr.Slider(label='Steps',
                                      minimum=1,
                                      maximum=50,
                                      value=50,
                                      step=1)
                img_size = gr.Slider(label='Image size',
                                      minimum=256,
                                      maximum=768,
                                      value=768,
                                      step=64)
                guidance_scale = gr.Slider(label='Guidance Scale',
                                           minimum=0.1,
                                           maximum=30.0,
                                           value=10.0,
                                           step=0.1)
                seed = gr.Slider(label='Seed',
                                 minimum=-1,
                                 maximum=2147483647,
                                 value=323*111,
                                 step=1,
                                 randomize=True)
                strength = gr.Slider(label='Strength',
                                           minimum=0.1,
                                           maximum=1.0,
                                           value=0.9,
                                           step=0.1)
                a_prompt = gr.Textbox(
                    label='Added Prompt',
                    value="interior design, 4K, high resolution, photorealistic")
                n_prompt = gr.Textbox(
                    label='Negative Prompt',
                    value="window, door, low resolution, banner, logo, watermark, text, deformed, blurry, out of focus, surreal, ugly, beginner")
            submit = gr.Button("Submit")
        
        with gr.Column():
            design_image = gr.Image(label="Output Mask", elem_id='img-display-output')
    
    
    def on_submit(image, text, num_steps, guidance_scale, seed, strength, a_prompt, n_prompt, img_size):
        model.seed = seed
        model.neg_prompt = n_prompt
        model.additional_quality_suffix = a_prompt
        
        with torch.no_grad():
            out_img = model.generate_design(image, text, guidance_scale=guidance_scale, num_steps=num_steps, strength=strength, img_size=img_size)

        return out_img

    submit.click(on_submit, inputs=[input_image, input_text, num_steps, guidance_scale, seed, strength, a_prompt, n_prompt, img_size], outputs=design_image)
   

controlnet_depth= ControlNetModel.from_pretrained(
    "controlnet_depth", torch_dtype=dtype, use_safetensors=True)
controlnet_seg = ControlNetModel.from_pretrained(
    "own_controlnet", torch_dtype=dtype, use_safetensors=True)

pipe = StableDiffusionControlNetInpaintPipeline.from_pretrained(
    "SG161222/Realistic_Vision_V6.0_B1_noVAE",
    #"models/runwayml--stable-diffusion-inpainting",
    controlnet=[controlnet_depth, controlnet_seg],
    safety_checker=None,
    torch_dtype=dtype
)

pipe.load_ip_adapter("h94/IP-Adapter", subfolder="models",
                     weight_name="ip-adapter_sd15.bin")
pipe.set_ip_adapter_scale(0.4)
pipe.scheduler = UniPCMultistepScheduler.from_config(pipe.scheduler.config)
pipe = pipe.to(device)
guide_pipe = StableDiffusionXLPipeline.from_pretrained("segmind/SSD-1B",
                                                       torch_dtype=dtype, use_safetensors=True, variant="fp16")
guide_pipe = guide_pipe.to(device)
   
seg_image_processor, image_segmentor = get_segmentation_pipeline()
depth_feature_extractor, depth_estimator = get_depth_pipeline()
depth_estimator = depth_estimator.to(device)

#download_models()
#lazy_realesrgan_x2 = LazyRealESRGAN(device, scale=2)
#lazy_realesrgan_x4 = LazyRealESRGAN(device, scale=4)

#lazy_pipe = LazyLoadPipeline()
#lazy_pipe.load()



def main():
    model = ControlNetDepthDesignModelMulti()
    print('Models uploaded successfully')
    
    title = "# Just try zeroGPU"
    description = """
    For test only
    """
    with gr.Blocks() as demo:
        gr.Markdown(title)
        gr.Markdown(description)   
        create_demo()


    demo.queue().launch(share=False)


if __name__ == '__main__':
    main()