1 files changed, 81 insertions, 0 deletions
diff --git a/common/JackFrameTimer.h b/common/JackFrameTimer.h
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+++ b/common/JackFrameTimer.h
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+/*
+Copyright (C) 2001 Paul Davis 
+Copyright (C) 2004-2006 Grame
+
+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
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __JackFrameTimer__
+#define __JackFrameTimer__
+
+#include "JackAtomicState.h"
+#include "types.h"
+
+namespace Jack
+{
+
+/*!
+\brief A structure used for time management.
+*/
+
+struct JackTimer
+{
+    jack_nframes_t fFrames;
+    jack_time_t	fCurrentWakeup;
+    jack_time_t	fCurrentCallback;
+    jack_time_t	fNextWakeUp;
+    float fSecondOrderIntegrator;
+    bool fInitialized;
+
+    /* not accessed by clients */
+
+    float fFilterCoefficient;	/* set once, never altered */
+
+    JackTimer();
+    ~JackTimer()
+    {}
+	
+};
+
+/*!
+\brief A class using the JackAtomicState to manage jack time. 
+*/
+
+class JackFrameTimer : public JackAtomicState<JackTimer>
+{
+    private:
+
+        bool fFirstWakeUp;
+        void IncFrameTimeAux(jack_nframes_t nframes, jack_time_t callback_usecs, jack_time_t period_usecs);
+
+    public:
+
+        JackFrameTimer(): fFirstWakeUp(true)
+        {}
+        ~JackFrameTimer()
+        {}
+
+        void Init();
+        void InitFrameTime(jack_time_t callback_usecs, jack_time_t period_usecs);
+        void ResetFrameTime(jack_nframes_t frames_rate, jack_time_t callback_usecs, jack_time_t period_usecs);
+        void IncFrameTime(jack_nframes_t nframes, jack_time_t callback_usecs, jack_time_t period_usecs);
+        void ReadFrameTime(JackTimer* timer);
+};
+
+
+} // end of namespace
+
+#endif