From 45e9f84f6ced6c2617535dd0ddd657f00b13d67b Mon Sep 17 00:00:00 2001
From: Blake Blackshear <blakeb@blakeshome.com>
Date: Sun, 11 Oct 2020 21:28:58 -0500
Subject: [PATCH] prevent the camera process from hanging

---
 frigate/edgetpu.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frigate/edgetpu.py b/frigate/edgetpu.py
index 90f9a7aea8..5398b91e59 100644
--- a/frigate/edgetpu.py
+++ b/frigate/edgetpu.py
@@ -177,7 +177,11 @@ def detect(self, tensor_input, threshold=.4):
         self.np_shm[:] = tensor_input[:]
         self.event.clear()
         self.detection_queue.put(self.name)
-        self.event.wait()
+        result = self.event.wait(timeout=10.0)
+
+        # if it timed out
+        if result is None:
+            return detections
 
         for d in self.out_np_shm:
             if d[1] < threshold: