openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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from argparse import ArgumentParser
from msgq.visionipc import VisionIpcClient, VisionStreamType
from cereal.messaging import SubMaster
import os
import signal
import subprocess
from subprocess import DEVNULL
import time
import atexit
from random import randint
DEFAULT_DISPLAY = ":99"
RESOLUTION = "2160x1080"
PIXEL_DEPTH = "24"
FRAMERATE = 20
DEFAULT_OUTPUT = "output.mp4"
DEMO_ROUTE = "a2a0ccea32023010/2023-07-27--13-01-19/0"
def wait_for_video():
sm = SubMaster(['uiDebug'])
no_frames_drawn = True
while no_frames_drawn:
sm.update()
no_frames_drawn = sm['uiDebug'].drawTimeMillis == 0.
def ensure_xvfb(display: str):
xvfb_cmd = ["Xvfb", display, "-screen", "0", f"{RESOLUTION}x{PIXEL_DEPTH}"]
xvfb_proc = subprocess.Popen(xvfb_cmd, stdout=DEVNULL, stderr=DEVNULL)
time.sleep(1)
if xvfb_proc.poll() is not None:
raise RuntimeError(f"Failed to start Xvfb on display {display}")
return xvfb_proc
def main(route: str, output_filepath: str, start_seconds: int, end_seconds: int):
assert end_seconds > start_seconds, 'end must be greater than start'
display = ':' + str(randint(99, 999))
duration = end_seconds - start_seconds
env = os.environ.copy()
env["DISPLAY"] = display
env["QT_QPA_PLATFORM"] = "xcb"
print(f'starting xvfb on display {display}')
xvfb_proc = ensure_xvfb(display)
atexit.register(lambda: xvfb_proc.terminate()) # Ensure cleanup on exit
ui_args = ["./selfdrive/ui/ui"]
ui_proc = subprocess.Popen(ui_args, env=env, stdout=DEVNULL, stderr=DEVNULL)
atexit.register(lambda: ui_proc.terminate())
replay_proc = subprocess.Popen(["./tools/replay/replay", "-c", "1", "-s", str(start_seconds), "--no-loop", "--demo"], env=env, stdout=DEVNULL, stderr=DEVNULL)
atexit.register(lambda: replay_proc.terminate())
# Wait for video data
wait_for_video()
time.sleep(2)
# Start FFmpeg
ffmpeg_cmd = [
"ffmpeg",
"-y",
"-video_size",
RESOLUTION,
"-framerate",
str(FRAMERATE),
"-f",
"x11grab",
"-draw_mouse",
"0",
"-i",
env.get('DISPLAY'),
"-c:v",
"libx264",
"-preset",
"ultrafast",
"-pix_fmt",
"yuv420p",
output_filepath,
]
ffmpeg_proc = subprocess.Popen(ffmpeg_cmd, env=env, stdout=DEVNULL, stderr=DEVNULL)
atexit.register(lambda: ffmpeg_proc.terminate())
print(f'starting at {start_seconds} seconds and clipping {duration} seconds')
time.sleep(duration)
# Stop FFmpeg gracefully
ffmpeg_proc.send_signal(signal.SIGINT)
ffmpeg_proc.wait(timeout=5)
# Clean up
ui_proc.terminate()
ui_proc.wait(timeout=5)
xvfb_proc.terminate()
xvfb_proc.wait(timeout=5)
print(f"Recording complete: {output_filepath}")
if __name__ == "__main__":
p = ArgumentParser(
prog='clip.py',
description='Clip your openpilot route.',
epilog='comma.ai'
)
p.add_argument('-r', '--route', help='Route', default=DEMO_ROUTE)
p.add_argument('-o', '--output', help='Output clip to (.mp4)', default=DEFAULT_OUTPUT)
p.add_argument('-s', '--start', help='Start clipping at <start> seconds', type=int, required=True)
p.add_argument('-e', '--end', help='Stop clipping at <end> seconds', type=int, required=True)
args = p.parse_args()
try:
main(args.route, args.output, args.start, args.end)
except KeyboardInterrupt:
print("Interrupted by user")
except Exception as e:
print(f"Error: {e}")
finally:
# Ensure all processes are terminated
atexit._run_exitfuncs()