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
import os
import signal
import subprocess
from subprocess import DEVNULL
import time
import atexit
XVFB_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():
vipc = VisionIpcClient('camerad', VisionStreamType.VISION_STREAM_ROAD, True)
while True:
if not vipc.is_connected():
vipc.connect(True)
new_data = vipc.recv()
if new_data is not None and new_data.data.any():
return
time.sleep(0.01) # Prevent tight loop
def ensure_xvfb():
"""Start Xvfb and return the process."""
xvfb_cmd = ["Xvfb", XVFB_DISPLAY, "-screen", "0", f"{RESOLUTION}x{PIXEL_DEPTH}"]
xvfb_proc = subprocess.Popen(xvfb_cmd, stdout=DEVNULL, stderr=DEVNULL)
time.sleep(1) # Give Xvfb time to start
if xvfb_proc.poll() is not None:
raise RuntimeError("Failed to start Xvfb")
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'
duration = end_seconds - start_seconds
# Set up environment
env = os.environ.copy()
env["DISPLAY"] = XVFB_DISPLAY # Set DISPLAY for all processes
env["QT_QPA_PLATFORM"] = "xcb"
# Start Xvfb
xvfb_proc = ensure_xvfb()
atexit.register(lambda: xvfb_proc.terminate()) # Ensure cleanup on exit
# Start UI process
ui_args = ["./selfdrive/ui/ui"]
ui_proc = subprocess.Popen(ui_args, env=env, stdout=DEVNULL, stderr=DEVNULL)
atexit.register(lambda: ui_proc.terminate())
# Start replay process
replay_proc = subprocess.Popen(["./tools/replay/replay", "-s", str(start_seconds), "--no-loop", route], env=env, stdout=DEVNULL, stderr=DEVNULL)
atexit.register(lambda: replay_proc.terminate())
# Wait for video data
wait_for_video()
time.sleep(1)
# Start FFmpeg
ffmpeg_cmd = [
"ffmpeg",
"-y",
"-video_size",
RESOLUTION,
"-framerate",
str(FRAMERATE),
"-f",
"x11grab",
"-draw_mouse",
"0",
"-i",
XVFB_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()