www.pudn.com > MPEG2systemsrc.rar > TimeStamp.H

/* Copyright (C) 1995, Tektronix Inc. All Rights Reserved.
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 * arising from the use of these programs.
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 * furnished hereunder are free of infringement of any third-party
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*/

/* TimeStamp classes */
#ifndef timestamp_h
#define timestamp_h

class TimeStamp27;

class TimeStamp90
{
public:
  TimeStamp90 (long);
  TimeStamp90 (long, int);
  TimeStamp90 (const TimeStamp27&);
  int bit32;
  long bits0_31;
  void print ();
};

class TimeStamp27 : public TimeStamp90
{
public:
  short ext;
  TimeStamp27 ();
  TimeStamp27 (long);
  TimeStamp27 (long, short);  
  TimeStamp27 (long, int, short);
  TimeStamp27& operator = (const TimeStamp27&); // x = y;
  TimeStamp27& operator = (long);         // x = 5;
  friend TimeStamp27 operator + (TimeStamp27&, TimeStamp27&);
  friend TimeStamp27 operator - (TimeStamp27&, TimeStamp27&);  
  friend int operator > (TimeStamp27&, TimeStamp27&);  
  long useconds ();
  void print ();
};

/*
 DOCUMENTATION

 The TimeStamp classes are encapsulations of the 27MHz and 90KHz
 timestamps found in MPEG Systems.  The class TimeStamp27 currently
 contains some additional utilities for performing arithmetic and
 converting the TimeStamp to microseconds.

 In both cases the 33'rd bit is frequently ignored; eventually this
 will be fixed. 
*/

#endif