app.py

import gradio as gr
import os
from firedetection import detect_fire_in_video

# Temporary directory to store results
TEMP_DIR = "temp_outputs"
os.makedirs(TEMP_DIR, exist_ok=True)

def fire_detection_interface(video_file):
    """
    Gradio interface function that:
      1) Receives an uploaded video.
      2) Calls detect_fire_in_video.
      3) Returns the path of the processed video for display in Gradio.
    """
    if video_file is None:
        return None

    # Extract filename
    input_video_path = video_file
    base_name = os.path.basename(input_video_path)
    name_no_ext, ext = os.path.splitext(base_name)

    output_path = os.path.join(TEMP_DIR, f"{name_no_ext}_fire{ext}")

    processed_path = detect_fire_in_video(
        input_video_path=input_video_path,
        output_video_path=output_path,
        model_path="yolov12n.pt",
        device="cpu"
    )
    return processed_path

demo = gr.Interface(
    fn=fire_detection_interface,
    inputs=gr.Video(label="Upload a Video"),
    outputs=gr.Video(label="Annotated Video"),
    title="Fire Detection with YOLO",
    description="This interface detects fire in an uploaded video using YOLO."
)

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