cleaning up a bit i don't remember whatever

Pipfile

@@ -5,7 +5,6 @@ name = "pypi"
 
 [packages]
 opencv-python = "*"
-python-ffmpeg = "*"
 
 [dev-packages]
 

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "96b4a3ab781c5962dc20f7beaae76ca7d30cf6dd4e193b0b04e985235aabc5cb"
+            "sha256": "9cd65918174126dae7310623cabe06ec6e5ce3f1bb0e255262749a78a55d3839"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -80,31 +80,6 @@
             "index": "pypi",
             "markers": "python_version >= '3.6'",
             "version": "==4.10.0.84"
-        },
-        "pyee": {
-            "hashes": [
-                "sha256:5d346a7d0f861a4b2e6c47960295bd895f816725b27d656181947346be98d7c1",
-                "sha256:b53af98f6990c810edd9b56b87791021a8f54fd13db4edd1142438d44ba2263f"
-            ],
-            "markers": "python_version >= '3.8'",
-            "version": "==11.1.0"
-        },
-        "python-ffmpeg": {
-            "hashes": [
-                "sha256:19ac80af5a064a2f53c245af1a909b2d7648ea045500d96d3bcd507b88d43dc7",
-                "sha256:d86697da8dfb39335183e336d31baf42fb217468adf5ac97fd743898240faae3"
-            ],
-            "index": "pypi",
-            "markers": "python_version >= '3.7'",
-            "version": "==2.0.12"
-        },
-        "typing-extensions": {
-            "hashes": [
-                "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d",
-                "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"
-            ],
-            "markers": "python_version >= '3.8'",
-            "version": "==4.12.2"
         }
     },
     "develop": {}

readme.md

@@ -1 +1,7 @@
-run it in python3 after `pipenv install opencv-python` 
+run it with python3 after `pipenv install opencv-python` 
+
+this progrram opens a fullscreen window showing a feed from camera 0 with a delay.
+it will collect a lot of video files in the videos/ folder, and use them for showing a long (multiple minutes) delay
+it also holds ontoo a buffer of a couple hundred frames to show shorter delays (like 5 oor 30 seconds)
+it doesn't currently do anything to handle missing files, but it would be nice to give it a "default" swirly portal looking video to show
+hopefully this'll run on a raspberry pi in the desert.

webcam.py

@@ -1,72 +1,83 @@
 from datetime import datetime, date, time, timedelta
+import os
 import cv2
 
-
 def five_minute_segment_from(the_time):
     return the_time.replace(minute=(the_time.minute // 1)*1, second=0, microsecond=0)
 
-def video_address_for(time_stamp):
+def path_to_video_at(time_stamp):
     return 'videos/' + str(time_stamp) + '.mkv'
 
+#delay for long delay
+long_delay = timedelta(hours=1)
+
+
 queue = [(False, None)] * 100 #queue of recent frames
 last_time_stamp = five_minute_segment_from(datetime.now()) 
   
 # live webcam feed
 camera = cv2.VideoCapture(0) 
-camera.set(cv2.CAP_PROP_FPS, 30.0)
 if not camera.isOpened():
     print("Cannot open camera")
     exit()
 
 # video writer
 fourcc = cv2.VideoWriter_fourcc(*'H264')
-out = cv2.VideoWriter(video_address_for(last_time_stamp), fourcc, camera.get(cv2.CAP_PROP_FPS), (int(camera.get(3)),int(camera.get(4))))
+out = cv2.VideoWriter(path_to_video_at(last_time_stamp), fourcc, camera.get(cv2.CAP_PROP_FPS), (int(camera.get(3)),int(camera.get(4))))
 
 # video feed from previously captured video
-old_time = cv2.VideoCapture(video_address_for(last_time_stamp))
+old_time = cv2.VideoCapture(path_to_video_at(last_time_stamp))
+
+cv2.namedWindow("mirror", cv2.WINDOW_NORMAL)
+cv2.setWindowProperty("mirror", cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)
 
 idx = 0 
 offset = 0
 longterm = False
 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=5)))
+        print(f"deleting old file {old_file}")
+        os.remove(old_file)
+
         out.release()
-        out = cv2.VideoWriter(video_address_for(last_time_stamp), 
+        out = cv2.VideoWriter(path_to_video_at(last_time_stamp), 
             fourcc, 
             camera.get(cv2.CAP_PROP_FPS), 
             (int(camera.get(3)), int(camera.get(4)))
             )
         if old_time.isOpened():
             old_time.release()
-        old_time = cv2.VideoCapture(video_address_for(five_minute_segment_from(datetime.now() - timedelta(minutes=10))))
+
+        new_file = path_to_video_at(five_minute_segment_from(datetime.now() - timedelta(minutes=10)))
+        pint(f"opening the previously recorded file {new_file} to read from for long mirror")
+        old_time = cv2.VideoCapture(new_file)
 
     last_time_stamp = five_minute_segment_from(datetime.now())
 
     ret, frame = camera.read() 
     frame = cv2.flip(frame, 1)
 
-    #recod the frame
+    # record the frame to the appropriate file, and also to the short term buffer
     out.write(frame)
     queue[idx] = ret, frame
 
+    prev_frame_valid, prev_frame = queue[(idx - offset) % len(queue)]
+    old_frame_valid, old_frame = old_time.read()
+    if not longterm and prev_frame_valid:
+        cv2.imshow('mirror', prev_frame)
+    elif longterm and old_frame_valid:
+        cv2.imshow('mirror', old_frame)
 
-    showo, fr = queue[(idx - offset) % len(queue)]
+    key = cv2.waitKey(16) # listen for keyprress for some number of ms
-    if longterm:
+    if key & 0xFF == ord('q') or key == 27: # q or esc 
-        ret2, frame2 = old_time.read()
-        if ret2:
-            cv2.imshow('vid', frame2)
-    elif showo:
-        cv2.imshow('vid', fr)
-      
-    # the 'q' button is set as the  quitting button you may use any  desired button of your choice 
-    key = cv2.waitKey(1) & 0xFF
-    if key == ord('q'): 
         break
-    if key == ord('a'):
+    if key & 0xFF == ord('a'):
         offset += 1
-    if key == ord('d'):
+    if key & 0xFF == ord('d'):
         offset -= 1
-    if key == ord('z'):
+    if key & 0xFF == ord('z'):
         longterm = not longterm
 
     idx = (idx + 1) % len(queue)