add support for he selector switch

webcam.py

@@ -1,7 +1,9 @@
 from datetime import datetime, date, time, timedelta
 import os
 import cv2
-from wakepy import keep
+import gpiod
+from gpiod import Direction, Value
+#from wakepy import keep
 
 def five_minute_segment_from(the_time):
     # this is mocked out too be a one minute segment instead
@@ -25,85 +27,127 @@ if not camera.isOpened():
 
 # video writer
 fourcc = cv2.VideoWriter_fourcc(*'H264')
+camera_fps = camera.get(cv2.CAP_PROP_FPS)
 video_writer = cv2.VideoWriter(path_to_video_at(last_time_stamp), 
     fourcc, 
-    camera.get(cv2.CAP_PROP_FPS), 
+    camera_fps, 
-    (int(camera.get(3)),int(camera.get(4))), 
+    (int(camera.get(3)),int(camera.get(4))), #resolution
     (cv2.VIDEOWRITER_PROP_HW_ACCELERATION, cv2.VIDEO_ACCELERATION_ANY)
     )
 
 # video feed from previously captured video
-old_time = cv2.VideoCapture(path_to_video_at(last_time_stamp))
+
+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)] * 100 #queue of recent frames
+queue = [(False, None)] * math.floor(camera_fps * 32) #queue of 32 seconds of frames
 idx = 0 # current index into the frame queue
-short_term_delay_frames = 20 # hoow many frames back are we going in the buffer when we're on a short term delay?
+
-longterm = False # are we shoowing a long term delay? (versus a sshort term delay)
+lines = {
+    "five_second": 1,
+    "thirty_second": 2,
+    "five_minute": 3,
+    "twelve_hour": 4,
+    "twenty_four_hour": 5
+}
+
 
 #with keep.presenting():
-while(True): 
+with gpiod.request_lines(
+    "/dev/gpiochip0",
+    consumer="mirror-to-yesterday",
+    config={
+        lines.five_second: gpiod.LineSettings(direction=Direction.INPUT),
+        lines.thirty_second: gpiod.LineSettings(direction=Direction.INPUT),
+        lines.five_minute: gpiod.LineSettings(direction=Direction.INPUT),
+        lines.twelve_hour: gpiod.LineSettings(direction=Direction.INPUT),
+        lines.twenty_four_hour: gpiod.LineSettings(direction=Direction.INPUT)
+    }
+    ) as io_lines:
+    while(True): 
         if last_time_stamp != five_minute_segment_from(datetime.now()):
             # find file older than our long delay
-        old_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay - timedelta(minutes=1)))
+            oldest_file_path = path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(hours=24) - timedelta(minutes=10)))
-        if os.path.isfile(old_file):
+            if os.path.isfile(oldest_file_path):
-            print(f"deleting old file {old_file}")
+                print(f"deleting old file {oldest_file_path}")
-            os.remove(old_file)
+                os.remove(oldest_file_path)
 
             video_writer.release()
-        newly_recording_file = path_to_video_at(five_minute_segment_from(datetime.now()))
+            newly_recording_file_path = path_to_video_at(five_minute_segment_from(datetime.now()))
             
-        print(f"opening {newly_recording_file} too record this upcoming ssegment to")
+            print(f"opening {newly_recording_file_path} too record this upcoming ssegment to")
-        video_writer = cv2.VideoWriter(newly_recording_file, 
+            video_writer = cv2.VideoWriter(newly_recording_file_path, 
                 fourcc, 
-            camera.get(cv2.CAP_PROP_FPS), 
+                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():
-        if old_time.isOpened():
+                twenty_four_hours_ago.release()
-            old_time.release()
+            twenty_four_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(hours=24))))
-
+            if twelve_hours_ago.isOpened():
-        new_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay))
+                twelve_hours_ago.release()
-        print(f"opening the previously recorded file {new_file} to read from for long mirror")
+            twelve_hours_ago = cv2.VideoCapture(path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(hours=12))))
-        old_time = cv2.VideoCapture(new_file, cv2.CAP_FFMPEG)
+            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=5))))
 
 
         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
 
-    prev_frame_valid, prev_frame = queue[(idx - short_term_delay_frames) % len(queue)]
+        frames = {
-    old_frame_valid, old_frame = old_time.read()
+            "five_second": queue[(idx - math.floor(5*camera_fps)) % len(queue)],
-    if not longterm and prev_frame_valid:
+            "thirty_second": queue[(idx - math.floor(30*camera_fps)) % len(queue)],
-        cv2.imshow('mirror', prev_frame)
+            "five_minute": five_minutes_ago.read(),
-    elif longterm and old_frame_valid:
+            "twelve_hour": twelve_hours_ago.read(),
-        cv2.imshow('mirror', old_frame)
+            "twenty_four_hour": twenty_four_hours_ago.read(),
+        }
+
+        #valid, the_frame = frames.five_second
+        if io_lines.get_value(lines.twenty_four_hour):
+            valid, the_frame = frames.twenty_four_hour
+        elif io_lines.get_value(lines.twelve_hour):
+            valid, the_frame = frames.twelve_hour
+        elif io_lines.get_value(lines.five_minute):
+            valid, the_frame = frames.five_minute
+        elif io_lines.get_value(lines.thirty_second):
+            valid, the_frame = frames.thirty_second
+        else: #if 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'):
+        """if key & 0xFF == ord('a'):
             short_term_delay_frames += 1
         if key & 0xFF == ord('d'):
             short_term_delay_frames -= 1
         if key & 0xFF == ord('z'):
-        longterm = not longterm
+            longterm = not longterm"""
-
-    idx = (idx + 1) % len(queue)
       
 # After the loop release the cap object 
 camera.release()
-old_time.release()
 video_writer.release()
+twenty_four_hours_ago.release()
+twelve_hours_ago.release()
+five_minutes_ago.release()
 # Destroy all the windows 
 cv2.destroyAllWindows()