Initial community commit

Src/nu/VideoClock.h

@@ -0,0 +1,63 @@
+#pragma once
+#include <windows.h>
+
+namespace nu
+{
+class VideoClock
+{
+public:
+	VideoClock()
+	{
+		video_sync_start_time=0;
+		pause_start_time=0;
+		length_paused=0;
+		paused=0;
+	}
+
+	void Reset()
+	{
+		length_paused = 0;
+		paused=0;
+	}
+
+	void Pause()
+	{
+		paused=1;
+		pause_start_time = GetTickCount();
+	}
+
+	void Unpause()
+	{
+		paused=0;
+		length_paused += (GetTickCount() - pause_start_time);
+	}
+
+	int GetOutputTime()
+	{
+		if (paused)
+		{
+			return pause_start_time - video_sync_start_time - length_paused;
+		}
+		else
+		{
+			return GetTickCount() - video_sync_start_time - length_paused;
+		}
+	}
+
+	void Seek(int time_ms)
+	{
+		video_sync_start_time = GetTickCount() - time_ms;
+		length_paused = 0;
+	}
+
+	void Start()
+	{
+		video_sync_start_time = GetTickCount();
+	}
+private:
+	DWORD video_sync_start_time;
+	DWORD pause_start_time;
+	DWORD length_paused;
+	int paused;
+};
+}