plug in race in camera release

We can crash if start/stop pressed fast eventually.

1 files changed, 22 insertions, 0 deletions

diff --git a/opentrack/sleep.hpp b/opentrack/sleep.hpp
new file mode 100644
index 00000000..27920842
--- /dev/null
+++ b/opentrack/sleep.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+namespace portable
+{
+#ifdef _WIN32
+    #include <windows.h>
+
+    template<typename = void>
+    void sleep(unsigned milliseconds)
+    {
+        Sleep(milliseconds);
+    }
+#else
+    #include <unistd.h>
+
+    template<typename = void>
+    void sleep(unsigned milliseconds)
+    {
+        usleep(milliseconds * 1000U); // takes microseconds
+    }
+#endif
+}