X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcross.h;h=6a77aaa18d8127e972c261d7c7ce200baa3e5008;hb=3f3727634b98ce2761a193b9d1e3fc14f51dcbd2;hp=931e7d8900792612f5781fc44b0b44f494c6cf09;hpb=bdbb254c18b100f8fa66a3707f6b515309d05685;p=dcpomatic.git

diff --git a/src/lib/cross.h b/src/lib/cross.h
index 931e7d890..6a77aaa18 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
@@ -17,6 +17,16 @@
 
 */
 
+/** @file  src/lib/cross.h
+ *  @brief Cross-platform compatibility code.
+ */
+
+#ifndef DCPOMATIC_CROSS_H
+#define DCPOMATIC_CROSS_H
+
+#ifdef DCPOMATIC_OSX
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
 #include <boost/filesystem.hpp>
 
 #ifdef DCPOMATIC_WINDOWS
@@ -34,3 +44,26 @@ extern boost::filesystem::path openssl_path ();
 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