app.py

import spaces
import gradio as gr
import subprocess
from PIL import Image
import json
import os
import time
import mp_box
import draw_landmarks68

'''
Face landmark detection based Face Detection.
https://ai.google.dev/edge/mediapipe/solutions/vision/face_landmarker
from model card
https://storage.googleapis.com/mediapipe-assets/MediaPipe%20BlazeFace%20Model%20Card%20(Short%20Range).pdf
Licensed Apache License, Version 2.0
Train with google's dataset(more detail see model card)

'''

dir_name ="files"
passed_time = 60*60 
def clear_old_files(dir,passed_time):
    try:
        files = os.listdir(dir)
        current_time = time.time()
        for file in files:
            file_path = os.path.join(dir,file)
            
            ctime = os.stat(file_path).st_ctime
            diff = current_time - ctime
            #print(f"ctime={ctime},current_time={current_time},passed_time={passed_time},diff={diff}")
            if diff > passed_time:
                os.remove(file_path)
    except:
            print("maybe still gallery using error")

def picker_color_to_rgba(picker_color):
    color_value = picker_color.strip("rgba()").split(",")
    color_value[0] = int(float(color_value[0]))
    color_value[1] = int(float(color_value[1]))
    color_value[2] = int(float(color_value[2]))
    color_value[3] = int(float(color_value[3]))
    return color_value

#@spaces.GPU(duration=120)
def process_images(image,draw_number,font_scale,text_color_text,dot_size,dot_color_text,line_size,line_color_text,box_size,box_color_text,json_format,progress=gr.Progress(track_tqdm=True)):
    
    if not os.path.exists(dir_name):
        os.mkdir(dir_name)
    clear_old_files(dir_name,passed_time)

    if image == None:
        raise gr.Error("Need Image")

    progress(0, desc="Start Mediapipe")
    

    boxes,mp_image,face_landmarker_result = mp_box.mediapipe_to_box(image)
    #need only result
    text_color = picker_color_to_rgba(text_color_text)
    line_color = picker_color_to_rgba(line_color_text)
    dot_color = picker_color_to_rgba(dot_color_text)
    box_color = picker_color_to_rgba(box_color_text)

    image=Image.fromarray(mp_box.draw_landmarks_on_image(face_landmarker_result,image))

    annotated_image,bbox,landmark_points = draw_landmarks68.draw_landmarks_on_image(image,face_landmarker_result,draw_number,font_scale,text_color,
                                                                                    dot_size,dot_color,line_size,line_color,
                                                                                    box_size,box_color)

    
    if json_format=="raw":
        jsons = landmark_points
    else:
        jsons=draw_landmarks68.convert_to_landmark_group_json(landmark_points)
    
    #print(annotation_boxes)
    formatted_json = json.dumps(jsons)
    json_path=create_json_download(formatted_json)
    #return image   
    return annotated_image,jsons,json_path
    

def write_file(file_path,text):
    with open(file_path, 'w', encoding='utf-8') as f:
        f.write(text)

def read_file(file_path):
    """read the text of target file
    """
    with open(file_path, 'r', encoding='utf-8') as f:
        content = f.read()

    return content

css="""
#col-left {
    margin: 0 auto;
    max-width: 640px;
}
#col-right {
    margin: 0 auto;
    max-width: 640px;
}
.grid-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap:10px
}

.image {
  width: 128px; 
  height: 128px; 
  object-fit: cover; 
}

.text {
  font-size: 16px;
}
"""

#css=css,

import hashlib

def text_to_sha256(text):
    text_bytes = text.encode('utf-8')
    hash_object = hashlib.sha256()
    hash_object.update(text_bytes)
    sha256_hex = hash_object.hexdigest()
    return sha256_hex


def create_json_download(text):
    file_id = f"{dir_name}/landmark_{text_to_sha256(text)[:32]}.json"
    write_file(file_id,text)
    # try to save
    return file_id

with gr.Blocks(css=css, elem_id="demo-container") as demo:
    with gr.Column():
        gr.HTML(read_file("demo_header.html"))
        gr.HTML(read_file("demo_tools.html"))
    with gr.Row():
                with gr.Column():
                    image = gr.Image(height=800,sources=['upload','clipboard'],image_mode='RGB',elem_id="image_upload", type="pil", label="Upload")
                    with gr.Row(elem_id="prompt-container",  equal_height=False):
                        with gr.Row():
                            btn = gr.Button("Extract Landmark 68", elem_id="run_button",variant="primary")
                    
                    with gr.Accordion(label="Advanced Settings", open=False):
                        with gr.Row( equal_height=True):
                            draw_number = gr.Checkbox(label="draw Number")

                            font_scale = gr.Slider(
                            label="Font Scale",
                            minimum=0.1,
                            maximum=2,
                            step=0.1,
                            value=0.5)

                            text_color = gr.ColorPicker(value="rgba(200,200,200,1)",label="text color")
                            #square_shape = gr.Checkbox(label="Square shape")
                        with gr.Row( equal_height=True):
                        
                            line_color = gr.ColorPicker(value="rgba(0,0,255,1)",label="line color")
                            line_size = gr.Slider(
                                label="Line Size",
                                minimum=0,
                                maximum=20,
                                step=1,
                                value=1)
                        with gr.Row( equal_height=True):
                            dot_color = gr.ColorPicker(value="rgba(255,0,0,1)",label="dot color")
                            dot_size = gr.Slider(
                                label="Dot Size",
                                minimum=0,
                                maximum=40,
                                step=1,
                                value=3)
                        with gr.Row( equal_height=True):
                            box_color = gr.ColorPicker(value="rgba(200,200,200,1)",label="box color")
                            box_size = gr.Slider(
                                label="Box Size",
                                minimum=0,
                                maximum=20,
                                step=1,
                                value=1)
                        with gr.Row( equal_height=True):
                            json_format = gr.Radio(choices=["raw","face-detection"],value="face-detection",label="json-output format")
                    
                with gr.Column():
                    image_out = gr.Image(label="Output", elem_id="output-img")
                    text_out = gr.TextArea(label="JSON-Output")
                    download_button = gr.DownloadButton(label="Download JSON" )
                    #download_button.click(fn=json_download,inputs=text_out,outputs=download_button)
            

    btn.click(fn=process_images, inputs=[image,draw_number,font_scale,text_color,
                                         dot_size,dot_color,line_size,line_color,
                                         box_size,box_color,json_format], outputs =[image_out,text_out,download_button], api_name='infer')
    gr.Examples(
                examples =["examples/00004200.jpg","examples/00005259.jpg","examples/00018022.jpg","examples/img-above.jpg","examples/img-below.jpg","examples/img-side.jpg"],
                inputs=[image]
    )
    gr.HTML(read_file("demo_footer.html"))

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