dng_date_time.h File Reference

Go to the source code of this file.

Classes
class	dng_date_time
	Class for holding a date/time and converting to and from relevant date/time formats. More...
class	dng_time_zone
	Class for holding a time zone. More...
class	dng_date_time_info
	Class for holding complete data/time/zone information. More...
class	dng_date_time_storage_info
	Store file offset from which date was read. More...
Enumerations
enum	dng_date_time_format { dng_date_time_format_unknown = 0, dng_date_time_format_exif = 1, dng_date_time_format_unix_little_endian = 2, dng_date_time_format_unix_big_endian = 3 }
	Tag to encode date represenation format. More...
Functions
void	CurrentDateTimeAndZone (dng_date_time_info &info)
void	DecodeUnixTime (uint32 unixTime, dng_date_time &dt)
	Convert UNIX "seconds since Jan 1, 1970" time to a dng_date_time.
dng_time_zone	LocalTimeZone (const dng_date_time &dt)

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Detailed Description

Functions and classes for working with dates and times in DNG files.

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Enumeration Type Documentation

enum dng_date_time_format

Tag to encode date represenation format.

Enumerator:

dng_date_time_format_exif	Date format not known.
dng_date_time_format_unix_little_endian	EXIF date string.
dng_date_time_format_unix_big_endian	32-bit UNIX time as 4-byte little endian

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Function Documentation

void CurrentDateTimeAndZone

(

dng_date_time_info &

info

)

Get the current date/time and timezone.

Parameters:

dt

Receives current data/time/zone.

References dng_date_time::fDay, dng_date_time::fHour, dng_date_time::fMinute, dng_date_time::fMonth, dng_date_time::fSecond, dng_date_time::fYear, dng_date_time_info::SetDateTime(), dng_time_zone::SetOffsetMinutes(), and dng_date_time_info::SetZone().

dng_time_zone LocalTimeZone

(

const dng_date_time &

dt

)

Return timezone of current location at a given date.

Parameters:

dt

Date at which to compute timezone difference. (For example, used to determine Daylight Savings, etc.)

Return values:

Time

zone for date/time dt.

References dng_date_time::fDay, dng_date_time::fHour, dng_date_time::fMinute, dng_date_time::fMonth, dng_date_time::fSecond, dng_date_time::fYear, dng_time_zone::IsValid(), dng_date_time::IsValid(), dng_time_zone::SetOffsetSeconds(), and dng_date_time_info::TimeZone().