add recvplotdiff

flandre/launcher.py

@@ -236,9 +236,32 @@ def device_recvplot():
         print((ts - last_ts) / 10 ** 6, flush=True)
         last_ts = ts
 
+
+@device.command('recvplotdiff')
+def device_recvplotdiff():
+    ctx = zmq.Context()
+    pull = ctx.socket(zmq.PULL)
+    pull.connect(C.live_push_socket)
+    last_ts = 0
+    max_interval = 0
+    first = True
+    while True:
+        b = pull.recv()
+
+        ts, sequence_id, encoder, buffer = b2t(b)
+        if first:
+            last_ts = ts
+            first = False
+            continue
+        max_interval = max(max_interval, ts - last_ts)
+        print(max_interval / 10 ** 6, flush=True)
+        last_ts = ts
+
+
 def b2b(b):
     return hashlib.blake2b(b, digest_size=4).hexdigest()
 
+
 @device.command('recvzero')
 def device_recvzero():
     ctx = zmq.Context()