a webcam with a 5 second, 30 minute, or 24 hour delay
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
mirror-to-yesterday/webcam_demo.py

141 lines
5.3 KiB

from datetime import datetime, date, time, timedelta
import os
import cv2
import math
from wakepy import keep
def five_minute_segment_from(the_time):
# this is mocked out too be a one minute segment instead
return the_time.replace(second=0, microsecond=0)
#return the_time.replace(minute=(the_time.minute // 1)*1, second=0, microsecond=0)
def path_to_video_at(time_stamp):
return 'videos/' + str(time_stamp) + '.mp4' # mkv required for h264 encoding
last_time_stamp = five_minute_segment_from(datetime.now())
# live webcam feed
camera = cv2.VideoCapture(0)
if not camera.isOpened():
print("Cannot open camera")
exit()
fourcc = cv2.VideoWriter_fourcc(*'mp4v')
camera.set(cv2.CAP_PROP_FPS, 60.0)
camera_fps = camera.get(cv2.CAP_PROP_FPS)
camera.set(cv2.CAP_PROP_FRAME_WIDTH, 1280)
camera.set(cv2.CAP_PROP_FRAME_HEIGHT, 720)
video_writer = cv2.VideoWriter(path_to_video_at(last_time_stamp),
fourcc,
camera_fps,
(int(camera.get(3)),int(camera.get(4))), #resolution
(cv2.VIDEOWRITER_PROP_HW_ACCELERATION, cv2.VIDEO_ACCELERATION_ANY)
)
# video feed from previously captured video
twenty_four_hours_ago = cv2.VideoCapture(path_to_video_at(last_time_stamp - timedelta(hours=24)))
twelve_hours_ago = cv2.VideoCapture(path_to_video_at(last_time_stamp - timedelta(hours=12)))
five_minutes_ago = cv2.VideoCapture(path_to_video_at(last_time_stamp - timedelta(minutes=5)))
# fullscreen window yess good
cv2.namedWindow("mirror", cv2.WINDOW_NORMAL)
cv2.setWindowProperty("mirror", cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)
queue = [(False, None)] * math.floor(camera_fps * 32) #queue of 32 seconds of frames
idx = 0 # current index into the frame queue
lines = {
"five_second": 2,
"thirty_second": 3,
"five_minute": 4,
"twelve_hour": 5,
"twenty_four_hour": 6
}
mode = 4
#with keep.presenting():
with keep.presenting():
while(True):
if last_time_stamp != five_minute_segment_from(datetime.now()):
oldest_file_path = path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(minutes=5) - timedelta(minutes=10)))
if os.path.isfile(oldest_file_path):
print(f"deleting old file {oldest_file_path}")
os.remove(oldest_file_path)
video_writer.release()
newly_recording_file_path = path_to_video_at(five_minute_segment_from(datetime.now()))
print(f"opening {newly_recording_file_path} too record this upcoming ssegment to")
video_writer = cv2.VideoWriter(newly_recording_file_path,
fourcc,
camera_fps,
(int(camera.get(3)), int(camera.get(4))),
(cv2.VIDEOWRITER_PROP_HW_ACCELERATION, cv2.VIDEO_ACCELERATION_ANY)
)
if twenty_four_hours_ago.isOpened():
twenty_four_hours_ago.release()
#twenty_four_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(hours=24))))
twenty_four_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(minutes=3))))
if twelve_hours_ago.isOpened():
twelve_hours_ago.release()
#twelve_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(hours=12))))
twelve_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(minutes=2))))
if five_minutes_ago.isOpened():
five_minutes_ago.release()
five_minutes_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(minutes=1))))
last_time_stamp = five_minute_segment_from(datetime.now())
ret, frame = camera.read()
#frame = cv2.flip(frame, 1)
# record the frame to the appropriate file, and also to the short term buffer
video_writer.write(frame)
queue[idx] = ret, frame
frames = {
"five_second": queue[(idx - math.floor(5*camera_fps)) % len(queue)],
"thirty_second": queue[(idx - math.floor(30*camera_fps)) % len(queue)],
"five_minute": five_minutes_ago.read(),
"twelve_hour": twelve_hours_ago.read(),
"twenty_four_hour": twenty_four_hours_ago.read(),
}
#valid, the_frame = frames.five_second
if mode == 0:
valid, the_frame = frames["twenty_four_hour"]
elif mode == 1:
valid, the_frame = frames["twelve_hour"]
elif mode == 2:
valid, the_frame = frames["five_minute"]
elif mode == 3:
valid, the_frame = frames["thirty_second"]
else: #if not io_lines.get_value(lines.five_second)
valid, the_frame = frames["five_second"]
if valid:
cv2.imshow("mirror", the_frame)
idx = (idx + 1) % len(queue)
key = cv2.waitKey(16) # listen for keyprress for 16 ms
if key & 0xFF == ord('q') or key == 27: # q or esc
break
if key & 0xFF == ord('a'):
mode = (mode - 1) % 5
if key & 0xFF == ord('d'):
mode = (mode + 1) % 5
# After the loop release the cap object
camera.release()
video_writer.release()
twenty_four_hours_ago.release()
twelve_hours_ago.release()
five_minutes_ago.release()
# Destroy all the windows
cv2.destroyAllWindows()