///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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///////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_IMF_TIME_CODE_H
#define INCLUDED_IMF_TIME_CODE_H
//-----------------------------------------------------------------------------
//
// class TimeCode
//
// A TimeCode object stores time and control codes as described
// in SMPTE standard 12M-1999. A TimeCode object contains the
// following fields:
//
// Time Address:
//
// hours integer, range 0 - 23
// minutes integer, range 0 - 59
// seconds integer, range 0 - 59
// frame integer, range 0 - 29
//
// Flags:
//
// drop frame flag boolean
// color frame flag boolean
// field/phase flag boolean
// bgf0 boolean
// bgf1 boolean
// bgf2 boolean
//
// Binary groups for user-defined data and control codes:
//
// binary group 1 integer, range 0 - 15
// binary group 2 integer, range 0 - 15
// ...
// binary group 8 integer, range 0 - 15
//
// Class TimeCode contains methods to convert between the fields
// listed above and a more compact representation where the fields
// are packed into two unsigned 32-bit integers. In the packed
// integer representations, bit 0 is the least significant bit,
// and bit 31 is the most significant bit of the integer value.
//
// The time address and flags fields can be packed in three
// different ways:
//
// bits packing for packing for packing for
// 24-frame 60-field 50-field
// film television television
//
// 0 - 3 frame units frame units frame units
// 4 - 5 frame tens frame tens frame tens
// 6 unused, set to 0 drop frame flag unused, set to 0
// 7 unused, set to 0 color frame flag color frame flag
// 8 - 11 seconds units seconds units seconds units
// 12 - 14 seconds tens seconds tens seconds tens
// 15 phase flag field/phase flag bgf0
// 16 - 19 minutes units minutes units minutes units
// 20 - 22 minutes tens minutes tens minutes tens
// 23 bgf0 bgf0 bgf2
// 24 - 27 hours units hours units hours units
// 28 - 29 hours tens hours tens hours tens
// 30 bgf1 bgf1 bgf1
// 31 bgf2 bgf2 field/phase flag
//
// User-defined data and control codes are packed as follows:
//
// bits field
//
// 0 - 3 binary group 1
// 4 - 7 binary group 2
// 8 - 11 binary group 3
// 12 - 15 binary group 4
// 16 - 19 binary group 5
// 20 - 23 binary group 6
// 24 - 27 binary group 7
// 28 - 31 binary group 8
//
//-----------------------------------------------------------------------------
namespace Imf {
class TimeCode
{
public:
//---------------------
// Bit packing variants
//---------------------
enum Packing
{
TV60_PACKING, // packing for 60-field television
TV50_PACKING, // packing for 50-field television
FILM24_PACKING // packing for 24-frame film
};
//-------------------------------------
// Constructors and assignment operator
//-------------------------------------
TimeCode (); // all fields set to 0 or false
TimeCode (int hours,
int minutes,
int seconds,
int frame,
bool dropFrame = false,
bool colorFrame = false,
bool fieldPhase = false,
bool bgf0 = false,
bool bgf1 = false,
bool bgf2 = false,
int binaryGroup1 = 0,
int binaryGroup2 = 0,
int binaryGroup3 = 0,
int binaryGroup4 = 0,
int binaryGroup5 = 0,
int binaryGroup6 = 0,
int binaryGroup7 = 0,
int binaryGroup8 = 0);
TimeCode (unsigned int timeAndFlags,
unsigned int userData = 0,
Packing packing = TV60_PACKING);
TimeCode (const TimeCode &other);
TimeCode & operator = (const TimeCode &other);
//----------------------------
// Access to individual fields
//----------------------------
int hours () const;
void setHours (int value);
int minutes () const;
void setMinutes (int value);
int seconds () const;
void setSeconds (int value);
int frame () const;
void setFrame (int value);
bool dropFrame () const;
void setDropFrame (bool value);
bool colorFrame () const;
void setColorFrame (bool value);
bool fieldPhase () const;
void setFieldPhase (bool value);
bool bgf0 () const;
void setBgf0 (bool value);
bool bgf1 () const;
void setBgf1 (bool value);
bool bgf2 () const;
void setBgf2 (bool value);
int binaryGroup (int group) const; // group must be between 1 and 8
void setBinaryGroup (int group, int value);
//---------------------------------
// Access to packed representations
//---------------------------------
unsigned int timeAndFlags (Packing packing = TV60_PACKING) const;
void setTimeAndFlags (unsigned int value,
Packing packing = TV60_PACKING);
unsigned int userData () const;
void setUserData (unsigned int value);
private:
unsigned int _time;
unsigned int _user;
};
} // namespace Imf
#endif