#!/usr/bin/env python3
from pathlib import Path
from thermaldecoder import decode
import numpy as np
import subprocess
import matplotlib.pyplot as plt


# Create a directory to store the frames if it doesn't exist
root = Path('frames')
root.mkdir(exist_ok=True)

# Decode the frames from the pcap file
frames = list(decode('indesk.pcapng'))

# Iterate over the frames
for i, frame in enumerate(frames):
    try:
        # Convert the frame to an image file
        img_path = root / f"frame_{i}.png"
        f = np.array(frame)
        f.shape = (384, 288)
        plt.imshow(f)
        plt.axis('off')
        plt.savefig(img_path, bbox_inches='tight', pad_inches=0)
        plt.close()

        # Use ffmpeg to display the image
        subprocess.run(['ffmpeg', '-i', str(img_path), '-vf', 'scale=800:600', '-framerate', '25', '-f', 'image2pipe', '-'], check=True)

    except ValueError as e:
        print(f"Error processing frame {i}: {e}")