examples: update e2ee to use current API (#220)

Co-authored-by: Théo Monnom <[email protected]>

Author: aoife cassidy

examples/e2ee.py

@@ -47,8 +47,7 @@ async def draw_cube(source: rtc.VideoSource):
         [3, 7],
     ]
 
-    frame = rtc.ArgbFrame.create(rtc.VideoFormatType.FORMAT_ARGB, WIDTH, HEIGHT)
-    arr = np.frombuffer(frame.data, dtype=np.uint8)
+    arr = np.zeros((WIDTH * HEIGHT * 4), dtype=np.uint8)
     angle = 0
 
     while True:
@@ -88,7 +87,7 @@ async def draw_cube(source: rtc.VideoSource):
                             idx = (y + dy) * WIDTH * 4 + (x + dx) * 4
                             arr[idx : idx + 4] = [255, 255, 255, 255]
 
-        f = rtc.VideoFrame(frame.to_i420())
+        f = rtc.VideoFrame(WIDTH, HEIGHT, rtc.VideoBufferType.ARGB, arr)
         source.capture_frame(f)
         angle += 0.02