app.py

import os
import cv2
import time
import torch
import argparse
import insightface
import onnxruntime
import gradio as gr
from face_swapper import Inswapper, paste_to_whole
from face_analyser import analyse_face
from face_enhancer import load_face_enhancer_model, get_available_enhancer_names
import tempfile
from huggingface_hub import login, hf_hub_download, upload_file, HfApi, upload_folder
from datetime import datetime
import shutil

# --- Config ---
REPO_ID = os.environ.get("HFPATH")
HF_TOKEN = os.environ.get("MAGIC")
login(HF_TOKEN)

# --- Download function ---
api = HfApi()

def download_from_hf(subfolder):
    downloaded_files = []
    all_files = api.list_repo_files(repo_id=REPO_ID, repo_type="dataset")
    for file in all_files:
        if file.startswith(subfolder + "/"):
            downloaded_file = hf_hub_download(repo_id=REPO_ID, filename=file, repo_type="dataset")
            downloaded_files.append(downloaded_file)
    return downloaded_files

# --- Upload function ---
def upload_to_fd(path):
    SUBFOLDER = datetime.now().strftime("%Y%m%d")
    upload_folder(folder_path=path, path_in_repo=SUBFOLDER, repo_id=REPO_ID, repo_type="dataset")
    return f"https://huggingface.co/datasets/{REPO_ID}/blob/main/{SUBFOLDER}"

# ------------------------------ ARGS ------------------------------
parser = argparse.ArgumentParser(description="Face Swapper (Multi-target, Male+Female Sources)")
parser.add_argument("--out_dir", default=os.getcwd())
parser.add_argument("--batch_size", default=32)
parser.add_argument("--cuda", action="store_true", default=False)
user_args = parser.parse_args()

USE_CUDA = user_args.cuda
DEF_OUTPUT_PATH = user_args.out_dir
BATCH_SIZE = int(user_args.batch_size)

# ------------------------------ DEVICE ------------------------------
PROVIDER = ["CPUExecutionProvider"]
if USE_CUDA and "CUDAExecutionProvider" in onnxruntime.get_available_providers():
    PROVIDER = ["CUDAExecutionProvider", "CPUExecutionProvider"]
    print(">>> Running on CUDA")
else:
    USE_CUDA = False
    print(">>> Running on CPU")

device = "cuda" if USE_CUDA else "cpu"
EMPTY_CACHE = lambda: torch.cuda.empty_cache() if device == "cuda" else None

# ------------------------------ MODELS ------------------------------
FACE_ANALYSER = insightface.app.FaceAnalysis(name="buffalo_l", providers=PROVIDER)
FACE_ANALYSER.prepare(ctx_id=0, det_size=(640, 640), det_thresh=0.6)

FACE_SWAPPER = Inswapper(
    model_file="./assets/pretrained_models/inswapper_128.onnx",
    batch_size=(BATCH_SIZE if USE_CUDA else 1),
    providers=PROVIDER,
)

# ------------------------------ ENHANCERS ------------------------------
ENHANCER_CHOICES = ["NONE"] + get_available_enhancer_names()

# ------------------------------ CORE SWAP FUNC ------------------------------
def swap_on_frame(frame_bgr, analysed_source_male, analysed_source_female, enhancer_name="NONE"):
    analysed_faces = FACE_ANALYSER.get(frame_bgr)
    preds, matrs = [], []

    for analysed_face in analysed_faces:
        gender = analysed_face.get("gender", 1)  # 1 = male, 0 = female
        src_face = None

        if analysed_source_male is not None and analysed_source_female is not None:
            src_face = analysed_source_male if gender == 1 else analysed_source_female
        elif analysed_source_male is not None:
            if gender == 1:
                src_face = analysed_source_male
        elif analysed_source_female is not None:
            if gender == 0:
                src_face = analysed_source_female

        if src_face is None:
            continue

        batch_pred, batch_matr = FACE_SWAPPER.get([frame_bgr], [analysed_face], [src_face])
        preds.extend(batch_pred)
        matrs.extend(batch_matr)
        EMPTY_CACHE()

    for p, m in zip(preds, matrs):
        frame_bgr = paste_to_whole(
            foreground=p,
            background=frame_bgr,
            matrix=m,
            mask=None,
            crop_mask=(0, 0, 0, 0),
            blur_amount=0.1,
            erode_amount=0.15,
            blend_method="laplacian"
        )

    if enhancer_name != "NONE":
        try:
            model, runner = load_face_enhancer_model(name=enhancer_name, device=device)
            frame_bgr = runner(frame_bgr, model)
        except Exception as e:
            print(f"[Enhancer] Error while running {enhancer_name}: {e}")

    return frame_bgr

# ------------------------------ PROCESS ------------------------------
def swap_faces(target_files, male_file, female_file, enhancer_name="NONE"):
    start_time = time.time()

    analysed_source_male, analysed_source_female = None, None

    # Source male
    if male_file is not None:
        male_source_path = male_file.name
        analysed_source_male = analyse_face(cv2.imread(male_source_path), FACE_ANALYSER)

    # Source female
    if female_file is not None:
        female_source_path = female_file.name
        analysed_source_female = analyse_face(cv2.imread(female_source_path), FACE_ANALYSER)

    if analysed_source_male is None and analysed_source_female is None:
        raise ValueError("❌ Cần ít nhất 1 khuôn mặt nguồn (Nam hoặc Nữ).")

    output_files = []

    # Tạo thư mục tạm và lưu file đầu ra vào đó
    with tempfile.TemporaryDirectory() as temp_dir:
        print(f"Thư mục tạm thời được tạo: {temp_dir}")

        for f in target_files:
            target_path = f.name
            ext = os.path.splitext(target_path)[-1].lower()

            # -------------------- IMAGE --------------------
            if ext in [".jpg", ".jpeg", ".png", ".gif", ".bmp", ".tiff", ".webp"]:
                frame_bgr = cv2.imread(target_path)
                out_frame = swap_on_frame(frame_bgr, analysed_source_male, analysed_source_female, enhancer_name)

                # Tạo file tạm và ghi bức ảnh vào đó
                with tempfile.NamedTemporaryFile(suffix=ext, delete=False) as temp_file:
                    output_path = temp_file.name
                    cv2.imwrite(output_path, out_frame)  # Ghi bức ảnh vào file tạm
                    output_files.append(output_path)
                    print(f"File tạm được tạo tại: {output_path}")

                    # Sao chép file vào thư mục tạm
                    destination_file = os.path.join(temp_dir, os.path.basename(output_path))
                    shutil.copy(output_path, destination_file)
                    print(f"Đã sao chép {output_path} vào {destination_file}")

        # Tải lên thư mục tạm lên Hugging Face
        upload_to_fd(temp_dir)

    print(f"✔ Hoàn tất tất cả trong {time.time() - start_time:.2f}s")
    return output_files

# ------------------------------ UI ------------------------------
with gr.Blocks() as demo:
    gr.Markdown("## 🧑‍🦱➡👩 Face Swapper (Upload nhiều file target + nguồn nam/nữ) + Enhancer")

    with gr.Row():
        with gr.Column():
            target_input = gr.Files(label="Files đích (ảnh)", file_types=[".jpg", ".jpeg", ".png", ".gif", ".bmp", ".tiff", ".webp"])
            male_input = gr.File(label="File nguồn Nam (ảnh)", file_types=[".jpg", ".jpeg", ".png", ".gif", ".bmp", ".tiff", ".webp"])
            female_input = gr.File(label="File nguồn Nữ (ảnh)", file_types=[".jpg", ".jpeg", ".png", ".gif", ".bmp", ".tiff", ".webp"])
            enhancer = gr.Dropdown(ENHANCER_CHOICES, label="Face Enhancer", value="REAL-ESRGAN 2x")
            run_btn = gr.Button("✨ Swap")

        with gr.Column():
            output_files = gr.Files(label="Kết quả ảnh")

    def run_wrapper(target_files, male_file, female_file, enhancer_name):
        out_files = swap_faces(target_files, male_file, female_file, enhancer_name)
        return out_files

    run_btn.click(
        fn=run_wrapper,
        inputs=[target_input, male_input, female_input, enhancer],
        outputs=[output_files],
    )

if __name__ == "__main__":
    demo.launch()