app.py

import os
import cv2
import numpy as np
import random
import base64
import requests
import json
import time
import streamlit as st

# Function definitions
def tryon(person_img, garment_img, seed, randomize_seed):
    post_start_time = time.time()
    if person_img is None or garment_img is None:
        st.warning("Empty image")
        return None, None, "Empty image"
    if randomize_seed:
        seed = random.randint(0, MAX_SEED)
    encoded_person_img = cv2.imencode('.jpg', cv2.cvtColor(person_img, cv2.COLOR_RGB2BGR))[1].tobytes()
    encoded_person_img = base64.b64encode(encoded_person_img).decode('utf-8')
    encoded_garment_img = cv2.imencode('.jpg', cv2.cvtColor(garment_img, cv2.COLOR_RGB2BGR))[1].tobytes()
    encoded_garment_img = base64.b64encode(encoded_garment_img).decode('utf-8')

    try:
        url = "http://" + os.getenv('tryon_url', 'localhost:5000') + "/Submit"
        token = os.getenv('token', '')
        cookie = os.getenv('Cookie', '')
        referer = os.getenv('referer', '')
        headers = {'Content-Type': 'application/json', 'token': token, 'Cookie': cookie, 'referer': referer}
        data = {
            "clothImage": encoded_garment_img,
            "humanImage": encoded_person_img,
            "seed": seed
        }
        response = requests.post(url, headers=headers, data=json.dumps(data), timeout=50)
        if response.status_code == 200:
            result = response.json()['result']
            status = result['status']
            if status == "success":
                uuid = result['result']
    except Exception as err:
        st.error(f"Post Exception Error: {err}")
        return None, None, "Too many users, please try again later"
    post_end_time = time.time()

    get_start_time = time.time()
    time.sleep(9)
    Max_Retry = 12
    result_img = None
    info = ""
    err_log = ""
    for i in range(Max_Retry):
        try:
            url = "http://" + os.getenv('tryon_url', 'localhost:5000') + "/Query?taskId=" + uuid
            response = requests.get(url, headers=headers, timeout=20)
            if response.status_code == 200:
                result = response.json()['result']
                status = result['status']
                if status == "success":
                    result = base64.b64decode(result['result'])
                    result_np = np.frombuffer(result, np.uint8)
                    result_img = cv2.imdecode(result_np, cv2.IMREAD_UNCHANGED)
                    result_img = cv2.cvtColor(result_img, cv2.COLOR_RGB2BGR)
                    info = "Success"
                    break
                elif status == "error":
                    err_log = f"Status is Error"
                    info = "Error"
                    break
            else:
                err_log = "URL error, please contact the admin"
                info = "URL error, please contact the admin"
                break
        except requests.exceptions.ReadTimeout:
            err_log = "Http Timeout"
            info = "Http Timeout, please try again later"
        except Exception as err:
            err_log = f"Get Exception Error: {err}"
        time.sleep(1)
    get_end_time = time.time()
    if info == "":
        err_log = f"No image after {Max_Retry} retries"
        info = "Too many users, please try again later"
    if info != "Success":
        st.warning("Too many users, please try again later")

    return result_img, seed, info

MAX_SEED = 999999

st.title("Virtual Try-On")

st.write("""
Step 1. Upload a person image ⬇️
""")
person_img = st.file_uploader("Choose a person image", type=["jpg", "jpeg", "png"])

st.write("""
Step 2. Upload a garment image ⬇️
""")
garment_img = st.file_uploader("Choose a garment image", type=["jpg", "jpeg", "png"])

seed = st.slider("Seed", min_value=0, max_value=MAX_SEED, value=0)
randomize_seed = st.checkbox("Random seed", value=True)

if st.button("Run"):
    if person_img is not None and garment_img is not None:
        person_img = np.array(cv2.imdecode(np.frombuffer(person_img.read(), np.uint8), cv2.IMREAD_COLOR))
        garment_img = np.array(cv2.imdecode(np.frombuffer(garment_img.read(), np.uint8), cv2.IMREAD_COLOR))
        result_img, seed_used, result_info = tryon(person_img, garment_img, seed, randomize_seed)
        if result_img is not None:
            st.image(result_img, caption='Result')
        st.write(f"Seed used: {seed_used}")
        st.write(f"Response: {result_info}")
    else:
        st.warning("Please upload both person and garment images.")