From 3d78a3cb97ed470f331c5cdf7a3f3b2714a92f78 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Mon, 20 Jul 2015 13:18:06 +0200
Subject: plug in race in camera release

We can crash if start/stop pressed fast eventually.
---
 ftnoir_tracker_pt/camera.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'ftnoir_tracker_pt')

diff --git a/ftnoir_tracker_pt/camera.cpp b/ftnoir_tracker_pt/camera.cpp
index 2e745f2a..7c4af38f 100644
--- a/ftnoir_tracker_pt/camera.cpp
+++ b/ftnoir_tracker_pt/camera.cpp
@@ -8,6 +8,7 @@
 #include "camera.h"
 #include <string>
 #include <QDebug>
+#include "opentrack/sleep.hpp"
 
 using namespace cv;
 
@@ -113,6 +114,8 @@ void CVCamera::stop()
         cap->release();
         delete cap;
         cap = nullptr;
+        // give opencv time to exit camera threads, etc.
+        portable::sleep(500);
     }
     active = false;
 }
-- 
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