Prevent system from going into Standby or Hibernation while an encode is running.

src/global.cpp

@@ -1709,6 +1709,23 @@ bool x264_shutdown_computer(const QString &message, const unsigned long timeout,
 	return false;
 }
 
+/*
+ * Inform the system that it is in use, thereby preventing the system from entering sleep
+ */
+bool x264_set_thread_execution_state(const bool systemRequired)
+{
+	EXECUTION_STATE state = NULL;
+	if(systemRequired)
+	{
+		state = SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED | ES_AWAYMODE_REQUIRED);
+	}
+	else
+	{
+		state = SetThreadExecutionState(ES_CONTINUOUS);
+	}
+	return (state != NULL);
+}
+
 /*
  * Check for debugger (detect routine)
  */

src/global.h

@@ -121,6 +121,7 @@ bool x264_play_sound(const unsigned short uiSoundIdx, const bool bAsync, const w
 bool x264_portable(void);
 unsigned int x264_process_id(void);
 QString x264_query_reg_string(const bool bUser, const QString &path, const QString &name);
+bool x264_set_thread_execution_state(const bool systemRequired);
 bool x264_shutdown_computer(const QString &message, const unsigned long timeout, const bool forceShutdown);
 void x264_sleep(const unsigned int delay);
 bool x264_suspendProcess(const QProcess *proc, const bool suspend);

src/thread_encode.cpp

@@ -42,6 +42,30 @@
  */
 QMutex EncodeThread::m_mutex_startProcess;
 
+/*
+ * RAII execution state handler
+ */
+static class ExecutionStateHandler
+{
+public:
+	ExecutionStateHandler(void)
+	{
+		x264_set_thread_execution_state(true);
+	}
+	~ExecutionStateHandler(void)
+	{
+		x264_set_thread_execution_state(false);
+	}
+private:
+	//Disable copy constructor and assignment
+	ExecutionStateHandler(const ExecutionStateHandler &other) {}
+	ExecutionStateHandler &operator=(const ExecutionStateHandler &) {}
+
+	//Prevent object allocation on the heap
+	void *operator new(size_t);   void *operator new[](size_t);
+	void operator delete(void *); void operator delete[](void*);
+};
+
 /*
  * Macros
  */
@@ -169,6 +193,7 @@ void EncodeThread::checkedRun(void)
 	{
 		try
 		{
+			ExecutionStateHandler executionStateHandler;
 			encode();
 		}
 		catch(char *msg)

src/version.h

@@ -26,7 +26,7 @@
 #define VER_X264_MAJOR 2
 #define VER_X264_MINOR 2
 #define VER_X264_PATCH 5
-#define VER_X264_BUILD 623
+#define VER_X264_BUILD 625
 
 #define VER_X264_MINIMUM_REV 2363
 #define VER_X264_CURRENT_API 140