X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcross.h;h=c206fa55dbf3064cf17bcf68e719a45bb1765e2d;hb=73f52e94953848c696725defd3d7f5c4c30707e2;hp=7e032e5a1c808006e0c35860f9be6522f358bc9b;hpb=edafebffa42b9bc57408cc9540a7c15e4e4cab63;p=dcpomatic.git

diff --git a/src/lib/cross.h b/src/lib/cross.h
index 7e032e5a1..c206fa55d 100644
--- a/src/lib/cross.h
+++ b/src/lib/cross.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,7 +17,17 @@
 
 */
 
+/** @file  src/lib/cross.h
+ *  @brief Cross-platform compatibility code.
+ */
+
+#ifndef DCPOMATIC_CROSS_H
+#define DCPOMATIC_CROSS_H
+
 #include <boost/filesystem.hpp>
+#ifdef DCPOMATIC_OSX
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
 
 #ifdef DCPOMATIC_WINDOWS
 #define WEXITSTATUS(w) (w)
@@ -35,3 +45,25 @@ extern boost::filesystem::path app_contents ();
 #endif
 extern FILE * fopen_boost (boost::filesystem::path, std::string);
 extern int dcpomatic_fseek (FILE *, int64_t, int);
+
+/** @class Waker
+ *  @brief A class which tries to keep the computer awake on various operating systems.
+ *
+ *  Create a Waker to prevent sleep, and call ::nudge every so often (every minute or so).
+ *  Destroy the Waker to allow sleep again.
+ */
+class Waker
+{
+public:
+	Waker ();
+	~Waker ();
+
+	void nudge ();
+
+private:
+#ifdef DCPOMATIC_OSX
+	IOPMAssertionID _assertion_id;
+#endif
+};
+
+#endif