Initial

midiwrt/MIDITIME.HPP

@@ -0,0 +1,50 @@
+#ifndef _MIDITIME_HPP_
+#define _MIDITIME_HPP_
+#include <common/windows.hpp>
+
+class MidiDeltaTime
+{
+public:
+	MidiDeltaTime(void);
+	~MidiDeltaTime();
+  void resetTime(void);
+	DWORD deltaTime(void)const;
+  MidiDeltaTime &operator+=(DWORD musDeltaTime);
+private:
+	DWORD mDeltaTime;
+  DWORD mPrevDeltaTime;
+};
+
+inline
+MidiDeltaTime::MidiDeltaTime(void)
+{
+  resetTime();
+}
+
+inline
+MidiDeltaTime::~MidiDeltaTime()
+{
+}
+
+inline
+DWORD MidiDeltaTime::deltaTime(void)const
+{
+	return mDeltaTime;
+}
+
+inline
+MidiDeltaTime &MidiDeltaTime::operator+=(DWORD musDeltaTime)
+{
+	musDeltaTime/=.6;
+	mDeltaTime=(musDeltaTime-mPrevDeltaTime);
+	mPrevDeltaTime+=mDeltaTime;
+  return *this;
+}
+
+inline
+void MidiDeltaTime::resetTime(void)
+{
+	mDeltaTime=0L;
+	mPrevDeltaTime=0L;
+}
+#endif