app.py

# import spaces

# For fast API
from fastapi import FastAPI, File, UploadFile
import pickle
import uvicorn
import pandas as pd
import io

# Remove gradio 
# import gradio as gr

from PIL import Image
from src.tryon_pipeline import StableDiffusionXLInpaintPipeline as TryonPipeline
from src.unet_hacked_garmnet import UNet2DConditionModel as UNet2DConditionModel_ref
from src.unet_hacked_tryon import UNet2DConditionModel
from transformers import (
    CLIPImageProcessor,
    CLIPVisionModelWithProjection,
    CLIPTextModel,
    CLIPTextModelWithProjection,
)
from diffusers import DDPMScheduler,AutoencoderKL
from typing import List

import torch
import os
from transformers import AutoTokenizer
import numpy as np
from utils_mask import get_mask_location
from torchvision import transforms
import apply_net
from preprocess.humanparsing.run_parsing import Parsing
from preprocess.openpose.run_openpose import OpenPose
from detectron2.data.detection_utils import convert_PIL_to_numpy,_apply_exif_orientation
from torchvision.transforms.functional import to_pil_image
import base64
from io import BytesIO

# For use ZeroGPU 
# device = 'cuda' if torch.cuda.is_available() else 'cpu'

def pil_to_binary_mask(pil_image, threshold=0):
    np_image = np.array(pil_image)
    grayscale_image = Image.fromarray(np_image).convert("L")
    binary_mask = np.array(grayscale_image) > threshold
    mask = np.zeros(binary_mask.shape, dtype=np.uint8)
    for i in range(binary_mask.shape[0]):
        for j in range(binary_mask.shape[1]):
            if binary_mask[i,j] == True :
                mask[i,j] = 1
    mask = (mask*255).astype(np.uint8)
    output_mask = Image.fromarray(mask)
    return output_mask


base_path = 'yisol/IDM-VTON'  # Reverting to original model path
example_path = os.path.join(os.path.dirname(__file__), 'example')

unet = UNet2DConditionModel.from_pretrained(
    base_path,
    subfolder="unet",
    torch_dtype=torch.float16,
)
unet.requires_grad_(False)
tokenizer_one = AutoTokenizer.from_pretrained(
    base_path,
    subfolder="tokenizer",
    revision=None,
    use_fast=False,
)
tokenizer_two = AutoTokenizer.from_pretrained(
    base_path,
    subfolder="tokenizer_2",
    revision=None,
    use_fast=False,
)
noise_scheduler = DDPMScheduler.from_pretrained(base_path, subfolder="scheduler")

text_encoder_one = CLIPTextModel.from_pretrained(
    base_path,
    subfolder="text_encoder",
    torch_dtype=torch.float16,
)
text_encoder_two = CLIPTextModelWithProjection.from_pretrained(
    base_path,
    subfolder="text_encoder_2",
    torch_dtype=torch.float16,
)
image_encoder = CLIPVisionModelWithProjection.from_pretrained(
    base_path,
    subfolder="image_encoder",
    torch_dtype=torch.float16,
    )
vae = AutoencoderKL.from_pretrained(base_path,
                                    subfolder="vae",
                                    torch_dtype=torch.float16,
)

# "stabilityai/stable-diffusion-xl-base-1.0",
UNet_Encoder = UNet2DConditionModel_ref.from_pretrained(
    base_path,
    subfolder="unet_encoder",
    torch_dtype=torch.float16,
)

parsing_model = Parsing(0)
openpose_model = OpenPose(0)

UNet_Encoder.requires_grad_(False)
image_encoder.requires_grad_(False)
vae.requires_grad_(False)
unet.requires_grad_(False)
text_encoder_one.requires_grad_(False)
text_encoder_two.requires_grad_(False)
tensor_transfrom = transforms.Compose(
            [
                transforms.ToTensor(),
                transforms.Normalize([0.5], [0.5]),
            ]
    )

pipe = TryonPipeline.from_pretrained(
        base_path,
        unet=unet,
        vae=vae,
        feature_extractor= CLIPImageProcessor(),
        text_encoder = text_encoder_one,
        text_encoder_2 = text_encoder_two,
        tokenizer = tokenizer_one,
        tokenizer_2 = tokenizer_two,
        scheduler = noise_scheduler,
        image_encoder=image_encoder,
        torch_dtype=torch.float16,
)
pipe.unet_encoder = UNet_Encoder

# @spaces.GPU
# For simple API
def quick_tryon(humanTarget_img,garm_img,garment_prompt):
    denoise_steps = 30
    seed = 42
    return start_tryon(humanTarget_img, garm_img, garment_prompt, True, True, denoise_steps, seed)


def start_tryon(humanTarget_img,garm_img,garment_des,is_automaskchecked,is_checked_crop,denoise_steps,seed):
    device = "cuda"

    openpose_model.preprocessor.body_estimation.model.to(device)
    pipe.to(device)
    pipe.unet_encoder.to(device)

    garm_img= garm_img.convert("RGB").resize((768,1024))
    human_img_orig = humanTarget_img.convert("RGB")
    
    if is_checked_crop:
        width, height = human_img_orig.size
        target_width = int(min(width, height * (3 / 4)))
        target_height = int(min(height, width * (4 / 3)))
        left = (width - target_width) / 2
        top = (height - target_height) / 2
        right = (width + target_width) / 2
        bottom = (height + target_height) / 2
        cropped_img = human_img_orig.crop((left, top, right, bottom))
        crop_size = cropped_img.size
        human_img = cropped_img.resize((768,1024))
    else:
        human_img = human_img_orig.resize((768,1024))


    if is_automaskchecked:
        keypoints = openpose_model(human_img.resize((384,512)))
        model_parse, _ = parsing_model(human_img.resize((384,512)))
        mask, mask_gray = get_mask_location('hd', "upper_body", model_parse, keypoints)
        mask = mask.resize((768,1024))
    else:
        # if is_category == 'upper_body':
        #     mask, mask_gray = get_mask_location('hd', "upper_body", model_parse, keypoints)
        #     mask = mask.resize((768,1024))
        # # elif is_category == 'lower_body':
        # #     mask, mask_gray = get_mask_location('hd', "lower_body", model_parse, keypoints)
        # #     mask = mask.resize((768,1024))
        # # elif is_category == 'dresses':
        # #     mask, mask_gray = get_mask_location('hd', "dresses", model_parse, keypoints)
        # #     mask = mask.resize((768,1024))
        # else:
        mask_temp_img = Image.new('RGB', (768, 1024), color='white')  # Creating a new blank image
        mask = pil_to_binary_mask(mask_temp_img.convert("RGB").resize((768, 1024)))
    mask_gray = (1-transforms.ToTensor()(mask)) * tensor_transfrom(human_img)
    mask_gray = to_pil_image((mask_gray+1.0)/2.0)


    human_img_arg = _apply_exif_orientation(human_img.resize((384,512)))
    human_img_arg = convert_PIL_to_numpy(human_img_arg, format="BGR")
     
    

    args = apply_net.create_argument_parser().parse_args(('show', './configs/densepose_rcnn_R_50_FPN_s1x.yaml', './ckpt/densepose/model_final_162be9.pkl', 'dp_segm', '-v', '--opts', 'MODEL.DEVICE', 'cuda'))
    # verbosity = getattr(args, "verbosity", None)
    pose_img = args.func(args,human_img_arg)    
    pose_img = pose_img[:,:,::-1]    
    pose_img = Image.fromarray(pose_img).resize((768,1024))
    
    with torch.no_grad():
        # Extract the images
        with torch.cuda.amp.autocast():
            with torch.no_grad():
                prompt = "model is wearing " + garment_des
                negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality"
                with torch.inference_mode():
                    (
                        prompt_embeds,
                        negative_prompt_embeds,
                        pooled_prompt_embeds,
                        negative_pooled_prompt_embeds,
                    ) = pipe.encode_prompt(
                        prompt,
                        num_images_per_prompt=1,
                        do_classifier_free_guidance=True,
                        negative_prompt=negative_prompt,
                    )
                                    
                    prompt = "a photo of " + garment_des
                    negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality"
                    if not isinstance(prompt, List):
                        prompt = [prompt] * 1
                    if not isinstance(negative_prompt, List):
                        negative_prompt = [negative_prompt] * 1
                    with torch.inference_mode():
                        (
                            prompt_embeds_c,
                            _,
                            _,
                            _,
                        ) = pipe.encode_prompt(
                            prompt,
                            num_images_per_prompt=1,
                            do_classifier_free_guidance=False,
                            negative_prompt=negative_prompt,
                        )



                    pose_img =  tensor_transfrom(pose_img).unsqueeze(0).to(device,torch.float16)
                    garm_tensor =  tensor_transfrom(garm_img).unsqueeze(0).to(device,torch.float16)
                    generator = torch.Generator(device).manual_seed(seed) if seed is not None else None
                    images = pipe(
                        prompt_embeds=prompt_embeds.to(device,torch.float16),
                        negative_prompt_embeds=negative_prompt_embeds.to(device,torch.float16),
                        pooled_prompt_embeds=pooled_prompt_embeds.to(device,torch.float16),
                        negative_pooled_prompt_embeds=negative_pooled_prompt_embeds.to(device,torch.float16),
                        num_inference_steps=denoise_steps,
                        generator=generator,
                        strength = 1.0,
                        pose_img = pose_img.to(device,torch.float16),
                        text_embeds_cloth=prompt_embeds_c.to(device,torch.float16),
                        cloth = garm_tensor.to(device,torch.float16),
                        mask_image=mask,
                        image=human_img, 
                        height=1024,
                        width=768,
                        ip_adapter_image = garm_img.resize((768,1024)),
                        guidance_scale=2.0,
                    )[0]

    if is_checked_crop:
        out_img = images[0].resize(crop_size)        
        human_img_orig.paste(out_img, (int(left), int(top)))    
        return human_img_orig, mask_gray
    else:
        return images[0], mask_gray
    # return images[0], mask_gray

garm_list = os.listdir(os.path.join(example_path,"cloth"))
garm_list_path = [os.path.join(example_path,"cloth",garm) for garm in garm_list]

human_list = os.listdir(os.path.join(example_path,"human"))
human_list_path = [os.path.join(example_path,"human",human) for human in human_list]

human_ex_list = []
for ex_human in human_list_path:
    ex_dict= {}
    ex_dict['background'] = ex_human
    ex_dict['layers'] = None
    ex_dict['composite'] = None
    human_ex_list.append(ex_dict)

##default human


# API base configuration
app = FastAPI()

@app.get("/")
def api_home():
    return {"message": "Hello World"}


#AI 모델 실행 API, 처리완료된 이미지를 리턴한다. 
@app.post("/vton/")
async def vton_run(
    upload_human: UploadFile = File(...),
    upload_cloth: UploadFile = File(...),
    input_prompt: str = "Short Sleeve Round Neck T-shirts",
    is_automaskchecked: bool = True,
    is_checked_crop: bool = True,
    denoise_steps: int = 30,
    seed: int = 42
):
    # Validate file parameters
    if not upload_human or not upload_human.filename:
        return {"error": "Human image file is required"}
    if not upload_cloth or not upload_cloth.filename:
        return {"error": "Cloth image file is required"}
    
    # Validate file contents
    human_content = await upload_human.read()
    cloth_content = await upload_cloth.read()
    
    if not human_content:
        return {"error": "Human image file is empty"}
    if not cloth_content:
        return {"error": "Cloth image file is empty"}
    
    # Reset file pointers for reading
    await upload_human.seek(0)
    await upload_cloth.seek(0)
    
    target_human = Image.open(io.BytesIO(human_content))
    target_cloth = Image.open(io.BytesIO(cloth_content))

    results = quick_tryon(target_human, target_cloth, input_prompt)
    
    # Convert PIL Image to base64
    buffered = BytesIO()
    results[0].save(buffered, format="PNG")
    img_str = base64.b64encode(buffered.getvalue()).decode()
    
    return {"image": img_str}


# image_blocks = gr.Blocks().queue()
# with image_blocks as demo:
#     gr.Markdown("👕👔👚 GSR 임성남 👕👔👚")
#     gr.Markdown("생성형 AI를 활용한 가상 의상 착장 Protype (Based on IDM-VTON)!!!")
#     with gr.Row():
#         with gr.Column():
#             imgs = gr.ImageEditor(sources='upload', type="pil", label='Human. Mask with pen or use auto-masking', interactive=True)
#             with gr.Row():
#                 is_checked = gr.Checkbox(label="'상의' 자동 마스킹", info="체크 '해제'해야 '마스킹 의류 선택'이 반영됩니다.",value=True)
#             # with gr.Row():
#                 # gr.Radio(["수정중",], label="(수정중)마스킹 의류 선택", info="자동으로 마스킹할 의류 위치를 선택하세요")
#                 # is_category = gr.Radio(["upper_body", "lower_body", "dresses","layer"], label="마스킹 의류 선택", info="자동으로 마스킹할 의류 위치를 선택하세요")
#             with gr.Row():
#                 is_checked_crop = gr.Checkbox(label="Yes", info="Use auto-crop & resizing",value=False)

#             example = gr.Examples(
#                 inputs=imgs,
#                 examples_per_page=10,
#                 examples=human_ex_list
#             )

#         with gr.Column():
#             garm_img = gr.Image(label="Garment", sources='upload', type="pil")
#             with gr.Row(elem_id="prompt-container"):
#                 with gr.Row():
#                     prompt = gr.Textbox(placeholder="Description of garment ex) Short Sleeve Round Neck T-shirts", show_label=False, elem_id="prompt")
#             example = gr.Examples(
#                 inputs=garm_img,
#                 examples_per_page=8,
#                 examples=garm_list_path)
#         with gr.Column():
#             # image_out = gr.Image(label="Output", elem_id="output-img", height=400)
#             masked_img = gr.Image(label="Masked image output", elem_id="masked-img",show_share_button=False)
#         with gr.Column():
#             # image_out = gr.Image(label="Output", elem_id="output-img", height=400)
#             image_out = gr.Image(label="Output", elem_id="output-img",show_share_button=False)




#     with gr.Column():
#         try_button = gr.Button(value="Try-on")
#         with gr.Accordion(label="Advanced Settings", open=False):
#             with gr.Row():
#                 denoise_steps = gr.Number(label="Denoising Steps", minimum=20, maximum=40, value=30, step=1)
#                 seed = gr.Number(label="Seed", minimum=-1, maximum=2147483647, step=1, value=42)


#     try_button.click(fn=start_tryon, inputs=[imgs, garm_img, prompt, is_checked,is_checked_crop, denoise_steps, seed], outputs=[image_out,masked_img], api_name='tryon')

            


# image_blocks.launch()