app.py

import subprocess

# Define the command to be executed
command = ["python", "setup.py", "build_ext", "--inplace"]

# Execute the command
result = subprocess.run(command, capture_output=True, text=True)

# Print the output and error (if any)
print("Output:\n", result.stdout)
print("Errors:\n", result.stderr)

# Check if the command was successful
if result.returncode == 0:
    print("Command executed successfully.")
else:
    print("Command failed with return code:", result.returncode)

import gradio as gr
from datetime import datetime
import os
os.environ["TORCH_CUDNN_SDPA_ENABLED"] = "1"
import torch
import numpy as np
import cv2
import matplotlib.pyplot as plt
from PIL import Image, ImageFilter
from sam2.build_sam import build_sam2_video_predictor

from moviepy.editor import ImageSequenceClip

def get_video_fps(video_path):
    # Open the video file
    cap = cv2.VideoCapture(video_path)
    
    if not cap.isOpened():
        print("Error: Could not open video.")
        return None
    
    # Get the FPS of the video
    fps = cap.get(cv2.CAP_PROP_FPS)

    return fps

def preprocess_image(image):
    return image, gr.State([]), gr.State([]), image, gr.State()

def preprocess_video_in(video_path):

    # Generate a unique ID based on the current date and time
    unique_id = datetime.now().strftime('%Y%m%d%H%M%S')
    output_dir = f'frames_{unique_id}'
    
    # Create the output directory
    os.makedirs(output_dir, exist_ok=True)
    
    # Open the video file
    cap = cv2.VideoCapture(video_path)
    
    if not cap.isOpened():
        print("Error: Could not open video.")
        return None

    frame_number = 0
    first_frame = None
    
    while True:
        ret, frame = cap.read()
        if not ret:
            break
        
        # Format the frame filename as '00000.jpg'
        frame_filename = os.path.join(output_dir, f'{frame_number:05d}.jpg')
        
        # Save the frame as a JPEG file
        cv2.imwrite(frame_filename, frame)
        
        # Store the first frame
        if frame_number == 0:
            first_frame = frame_filename
        
        frame_number += 1
    
    # Release the video capture object
    cap.release()

    # 'image' is the first frame extracted from video_in
    return first_frame, gr.State([]), gr.State([]), first_frame, first_frame, output_dir, None, None

def get_point(point_type, tracking_points, trackings_input_label, first_frame_path, evt: gr.SelectData):
    print(f"You selected {evt.value} at {evt.index} from {evt.target}")

    tracking_points.value.append(evt.index)
    print(f"TRACKING POINT: {tracking_points.value}")

    if point_type == "include":
        trackings_input_label.value.append(1)
    elif point_type == "exclude":
        trackings_input_label.value.append(0)
    print(f"TRACKING INPUT LABEL: {trackings_input_label.value}")
    
    # Open the image and get its dimensions
    transparent_background = Image.open(first_frame_path).convert('RGBA')
    w, h = transparent_background.size
    
    # Define the circle radius as a fraction of the smaller dimension
    fraction = 0.02  # You can adjust this value as needed
    radius = int(fraction * min(w, h))
    
    # Create a transparent layer to draw on
    transparent_layer = np.zeros((h, w, 4), dtype=np.uint8)
    
    for index, track in enumerate(tracking_points.value):
        if trackings_input_label.value[index] == 1:
            cv2.circle(transparent_layer, track, radius, (0, 255, 0, 255), -1)
        else:
            cv2.circle(transparent_layer, track, radius, (255, 0, 0, 255), -1)

    # Convert the transparent layer back to an image
    transparent_layer = Image.fromarray(transparent_layer, 'RGBA')
    selected_point_map = Image.alpha_composite(transparent_background, transparent_layer)
    
    return tracking_points, trackings_input_label, selected_point_map
    
# use bfloat16 for the entire notebook
torch.autocast(device_type="cuda", dtype=torch.bfloat16).__enter__()

if torch.cuda.get_device_properties(0).major >= 8:
    # turn on tfloat32 for Ampere GPUs (https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices)
    torch.backends.cuda.matmul.allow_tf32 = True
    torch.backends.cudnn.allow_tf32 = True
    
def show_mask(mask, ax, obj_id=None, random_color=False):
    if random_color:
        color = np.concatenate([np.random.random(3), np.array([0.6])], axis=0)
    else:
        cmap = plt.get_cmap("tab10")
        cmap_idx = 0 if obj_id is None else obj_id
        color = np.array([*cmap(cmap_idx)[:3], 0.6])
    h, w = mask.shape[-2:]
    mask_image = mask.reshape(h, w, 1) * color.reshape(1, 1, -1)
    ax.imshow(mask_image)


def show_points(coords, labels, ax, marker_size=200):
    pos_points = coords[labels==1]
    neg_points = coords[labels==0]
    ax.scatter(pos_points[:, 0], pos_points[:, 1], color='green', marker='*', s=marker_size, edgecolor='white', linewidth=1.25)
    ax.scatter(neg_points[:, 0], neg_points[:, 1], color='red', marker='*', s=marker_size, edgecolor='white', linewidth=1.25)

def show_box(box, ax):
    x0, y0 = box[0], box[1]
    w, h = box[2] - box[0], box[3] - box[1]
    ax.add_patch(plt.Rectangle((x0, y0), w, h, edgecolor='green', facecolor=(0, 0, 0, 0), lw=2))    

def show_masks(image, masks, scores, point_coords=None, box_coords=None, input_labels=None, borders=True):
    combined_images = []  # List to store filenames of images with masks overlaid
    mask_images = []      # List to store filenames of separate mask images

    for i, (mask, score) in enumerate(zip(masks, scores)):
        # ---- Original Image with Mask Overlaid ----
        plt.figure(figsize=(10, 10))
        plt.imshow(image)
        show_mask(mask, plt.gca(), borders=borders)  # Draw the mask with borders
        """
        if point_coords is not None:
            assert input_labels is not None
            show_points(point_coords, input_labels, plt.gca())
        """
        if box_coords is not None:
            show_box(box_coords, plt.gca())
        if len(scores) > 1:
            plt.title(f"Mask {i+1}, Score: {score:.3f}", fontsize=18)
        plt.axis('off')

        # Save the figure as a JPG file
        combined_filename = f"combined_image_{i+1}.jpg"
        plt.savefig(combined_filename, format='jpg', bbox_inches='tight')
        combined_images.append(combined_filename)

        plt.close()  # Close the figure to free up memory

        # ---- Separate Mask Image (White Mask on Black Background) ----
        # Create a black image
        mask_image = np.zeros_like(image, dtype=np.uint8)
        
        # The mask is a binary array where the masked area is 1, else 0.
        # Convert the mask to a white color in the mask_image
        mask_layer = (mask > 0).astype(np.uint8) * 255
        for c in range(3):  # Assuming RGB, repeat mask for all channels
            mask_image[:, :, c] = mask_layer

        # Save the mask image
        mask_filename = f"mask_image_{i+1}.png"
        Image.fromarray(mask_image).save(mask_filename)
        mask_images.append(mask_filename)

        plt.close()  # Close the figure to free up memory

    return combined_images, mask_images

def load_model(checkpoint):
    # Load model accordingly to user's choice
    if checkpoint == "tiny":
        sam2_checkpoint = "./checkpoints/sam2_hiera_tiny.pt"
        model_cfg = "sam2_hiera_t.yaml"
    elif checkpoint == "samll":
        sam2_checkpoint = "./checkpoints/sam2_hiera_small.pt"
        model_cfg = "sam2_hiera_s.yaml"
    elif checkpoint == "base-plus":
        sam2_checkpoint = "./checkpoints/sam2_hiera_base_plus.pt"
        model_cfg = "sam2_hiera_b+.yaml"
    elif checkpoint == "large":
        sam2_checkpoint = "./checkpoints/sam2_hiera_large.pt"
        model_cfg = "sam2_hiera_l.yaml"

    return sam2_checkpoint, model_cfg
    
def sam_process(input_first_frame_image, checkpoint, tracking_points, trackings_input_label, video_frames_dir):
    # 1. We need to preprocess the video and store frames in the right directory
    # — Penser à utiliser un ID unique pour le dossier
 
    sam2_checkpoint, model_cfg = load_model(checkpoint)
    predictor = build_sam2_video_predictor(model_cfg, sam2_checkpoint)

    
    # `video_dir` a directory of JPEG frames with filenames like `<frame_index>.jpg`
    print(f"STATE FRAME OUTPUT DIRECTORY: {video_frames_dir}")
    video_dir = video_frames_dir
    
    # scan all the JPEG frame names in this directory
    frame_names = [
        p for p in os.listdir(video_dir)
        if os.path.splitext(p)[-1] in [".jpg", ".jpeg", ".JPG", ".JPEG"]
    ]
    frame_names.sort(key=lambda p: int(os.path.splitext(p)[0]))
    
    
    inference_state = predictor.init_state(video_path=video_dir)

    # segment and track one object
    # predictor.reset_state(inference_state) # if any previous tracking, reset

    # Add new point
    ann_frame_idx = 0  # the frame index we interact with
    ann_obj_id = 1  # give a unique id to each object we interact with (it can be any integers)
    
    # Let's add a positive click at (x, y) = (210, 350) to get started
    points = np.array(tracking_points.value, dtype=np.float32)
    # for labels, `1` means positive click and `0` means negative click
    labels = np.array(trackings_input_label.value, np.int32)
    _, out_obj_ids, out_mask_logits = predictor.add_new_points(
        inference_state=inference_state,
        frame_idx=ann_frame_idx,
        obj_id=ann_obj_id,
        points=points,
        labels=labels,
    )

    # Create the plot
    plt.figure(figsize=(12, 8))
    plt.title(f"frame {ann_frame_idx}")
    plt.imshow(Image.open(os.path.join(video_dir, frame_names[ann_frame_idx])))
    show_points(points, labels, plt.gca())
    show_mask((out_mask_logits[0] > 0.0).cpu().numpy(), plt.gca(), obj_id=out_obj_ids[0])
    
    # Save the plot as a JPG file
    first_frame_output_filename = "output_first_frame.jpg"
    plt.savefig(first_frame_output_filename, format='jpg')
    plt.close()

    return "output_first_frame.jpg", frame_names, inference_state

def propagate_to_all(video_in, video_incheckpoint, stored_inference_state, stored_frame_names, video_frames_dir, vis_frame_type):   
    #### PROPAGATION ####
    sam2_checkpoint, model_cfg = load_model(checkpoint)
    predictor = build_sam2_video_predictor(model_cfg, sam2_checkpoint)
    
    inference_state = stored_inference_state
    frame_names = stored_frame_names
    video_dir = video_frames_dir
    
    # Define a directory to save the JPEG images
    frames_output_dir = "frames_output_images"
    os.makedirs(frames_output_dir, exist_ok=True)
    
    # Initialize a list to store file paths of saved images
    jpeg_images = []

    # run propagation throughout the video and collect the results in a dict
    video_segments = {}  # video_segments contains the per-frame segmentation results
    for out_frame_idx, out_obj_ids, out_mask_logits in predictor.propagate_in_video(inference_state):
        video_segments[out_frame_idx] = {
            out_obj_id: (out_mask_logits[i] > 0.0).cpu().numpy()
            for i, out_obj_id in enumerate(out_obj_ids)
        }
    
    # render the segmentation results every few frames
    if vis_frame_type == "check":
        vis_frame_stride = 15
    elif vis_frame_type == "render":
        vis_frame_stride = 1
    plt.close("all")
    for out_frame_idx in range(0, len(frame_names), vis_frame_stride):
        plt.figure(figsize=(6, 4))
        plt.title(f"frame {out_frame_idx}")
        plt.imshow(Image.open(os.path.join(video_dir, frame_names[out_frame_idx])))
        for out_obj_id, out_mask in video_segments[out_frame_idx].items():
            show_mask(out_mask, plt.gca(), obj_id=out_obj_id)

        # Define the output filename and save the figure as a JPEG file
        output_filename = os.path.join(frames_output_dir, f"frame_{out_frame_idx}.jpg")
        plt.savefig(output_filename, format='jpg')
        
        # Append the file path to the list
        jpeg_images.append(output_filename)
    
        # Close the plot
        plt.close()

    

    if vis_frame_type == "check":
        return gr.update(value=jpeg_images, visible=True), gr.update(visible=False, value=None)
    elif vis_frame_type == "render":
        # Create a video clip from the image sequence
        original_fps = get_video_fps(video_in)
        fps = original_fps  # Frames per second
        clip = ImageSequenceClip(jpeg_images, fps=fps)
        # Write the result to a file
        final_vid_output_path = "output_video.mp4"
        video.write_videofile(output_path, codec='libx264')
        return gr.update(visible=False, value=None), gr.update(value=final_vid_output_path, visible=True)
    

with gr.Blocks() as demo:
    first_frame_path = gr.State()
    tracking_points = gr.State([])
    trackings_input_label = gr.State([])
    video_frames_dir = gr.State()
    stored_inference_state = gr.State()
    stored_frame_names = gr.State()
    with gr.Column():
        gr.Markdown("# SAM2 Video Predictor")
        gr.Markdown("This is a simple demo for video segmentation with SAM2.")
        gr.Markdown("""Instructions: 
        
        1. Upload your video 
        2. With 'include' point type selected, Click on the object to mask on first frame
        3. Switch to 'exclude' point type if you want to specify an area to avoid
        4. Submit !
        """)
        with gr.Row():
            with gr.Column():
                input_first_frame_image = gr.Image(label="input image", interactive=False, type="filepath", visible=False)                 
                points_map = gr.Image(
                    label="points map", 
                    type="filepath",
                    interactive=False
                )
                video_in = gr.Video(label="Video IN")
                with gr.Row():
                    point_type = gr.Radio(label="point type", choices=["include", "exclude"], value="include")
                    clear_points_btn = gr.Button("Clear Points")
                checkpoint = gr.Dropdown(label="Checkpoint", choices=["tiny", "small", "base-plus", "large"], value="tiny")
                submit_btn = gr.Button("Submit")
            with gr.Column():
                output_result = gr.Image()
                with gr.Row():
                    vis_frame_type = gr.Radio(choices=["check", "render"], value="check", scale=2)
                    propagate_btn = gr.Button("Propagate", scale=1)
                output_propagated = gr.Gallery(visible=False)
                output_video = gr.Video(visible=False)
                # output_result_mask = gr.Image()
    
    clear_points_btn.click(
        fn = preprocess_image,
        inputs = input_first_frame_image, 
        outputs = [first_frame_path, tracking_points, trackings_input_label, points_map, stored_inference_state],
        queue=False
    )
    
    video_in.upload(
        fn = preprocess_video_in, 
        inputs = [video_in], 
        outputs = [first_frame_path, tracking_points, trackings_input_label, input_first_frame_image, points_map, video_frames_dir, stored_inference_state, stored_frame_names],
        queue = False
    )

    points_map.select(
        fn = get_point, 
        inputs = [point_type, tracking_points, trackings_input_label, first_frame_path], 
        outputs = [tracking_points, trackings_input_label, points_map], 
        queue = False
    )

    submit_btn.click(
        fn = sam_process,
        inputs = [input_first_frame_image, checkpoint, tracking_points, trackings_input_label, video_frames_dir],
        outputs = [output_result, stored_frame_names, stored_inference_state]
    )

    propagate_btn.click(
        fn = propagate_to_all,
        inputs = [video_in, checkpoint, stored_inference_state, stored_frame_names, video_frames_dir, vis_frame_type],
        outputs = [output_propagated, output_video]
    )

demo.launch(show_api=False, show_error=True)