grid.hpp

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/*
  GRID.hpp  -  time scale grid abstraction
 
   Copyright (C)
     2011,            Hermann Vosseler <Ichthyostega@web.de>
 
 **Lumiera** 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. See the file COPYING for further details.
 
*/
 
 
#ifndef LIB_TIME_GRID_H
#define LIB_TIME_GRID_H
 
#include "lib/time/timevalue.hpp"
 
#include <memory>
 
 
namespace lib {
namespace time {
  
  
  class Grid
    {
    public:
      virtual ~Grid();   
      
      
      virtual FrameCnt  gridPoint (TimeValue const& raw)  const   =0;
      virtual Offset    gridLocal (TimeValue const& raw)  const   =0;
      virtual TimeValue timeOf    (FrameCnt gridPoint)    const   =0;
      virtual TimeValue timeOf    (FSecs gridTime, int=0) const   =0;
    };
  
  using PGrid = std::shared_ptr<const Grid>;
  
  
  
}} // lib::time
#endif