Exiv2::ExifTags

Exiv2::ExifTags Class Reference

Exif tag reference, implemented as a static class. More...

#include <tags.hpp>

List of all members.

Static Public Member Functions

static std::string tagName (uint16_t tag, IfdId ifdId)
 Return the name of the tag or a string with the hexadecimal value of the tag in the form "0x01ff", if the tag is not a known Exif tag.
static const char * tagTitle (uint16_t tag, IfdId ifdId)
 Return the title (label) of the tag. (Deprecated, use tagLabel() instead.).
static const char * tagLabel (uint16_t tag, IfdId ifdId)
 Return the title (label) of the tag.
static const char * tagDesc (uint16_t tag, IfdId ifdId)
 Return the description of the tag.
static uint16_t tag (const std::string &tagName, IfdId ifdId)
 Return the tag for one combination of IFD id and tagName. If the tagName is not known, it expects tag names in the form "0x01ff" and converts them to unsigned integer.
static IfdId ifdIdByIfdItem (const std::string &ifdItem)
 Return the IFD id for an IFD item.
static const char * ifdName (IfdId ifdId)
 Return the name of the IFD.
static const char * ifdItem (IfdId ifdId)
 Return the related image item (image or thumbnail).
static const char * sectionName (SectionId sectionId)
 Return the name of the section.
static const char * sectionName (uint16_t tag, IfdId ifdId)
 Return the name of the section for a combination of tag and IFD id.
static const char * sectionDesc (uint16_t tag, IfdId ifdId)
 Return the description of the section for a combination of tag and IFD id.
static SectionId sectionId (const std::string &sectionName)
 Return the section id for a section name.
static TypeId tagType (uint16_t tag, IfdId ifdId)
 Return the type for tag and IFD id.
static std::ostream & printTag (std::ostream &os, uint16_t tag, IfdId ifdId, const Value &value, const ExifData *pExifData=0)
 Interpret and print the value of an Exif tag.
static const TagInfo * ifdTagList ()
 Return read-only list of built-in IFD0/1 tags.
static const TagInfo * exifTagList ()
 Return read-only list of built-in Exif IFD tags.
static const TagInfo * iopTagList ()
 Return read-only list of built-in IOP tags.
static const TagInfo * gpsTagList ()
 Return read-only list of built-in GPS tags.
static const TagInfo * mnTagList ()
 Return read-only list of built-in Exiv2 Makernote info tags.
static void taglist (std::ostream &os)
 Print a list of all standard Exif tags to output stream.
static void taglist (std::ostream &os, IfdId ifdId)
 Print the list of tags for IfdId.
static bool isMakerIfd (IfdId ifdId)
 Return true if ifdId is an Ifd id which is a makernote Ifd id. Note: Calling this function with makerIfd returns false.
static bool isExifIfd (IfdId ifdId)
 Return true if ifdId is an Exif Ifd Id, i.e., one of ifd0Id, exifIfdId, gpsIfdId, iopIfdId or ifd1Id, else false. This is used to differentiate between standard Exif Ifds and Ifds associated with the makernote.

Detailed Description

Exif tag reference, implemented as a static class.

Member Function Documentation

std::string Exiv2::ExifTags::tagName ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the name of the tag or a string with the hexadecimal value of the tag in the form "0x01ff", if the tag is not a known Exif tag.

Parameters:
tag The tag
ifdId IFD id
Returns:
The name of the tag or a string containing the hexadecimal value of the tag in the form "0x01ff", if this is an unknown tag.

const char * Exiv2::ExifTags::tagTitle ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the title (label) of the tag. (Deprecated, use tagLabel() instead.).

Parameters:
tag The tag
ifdId IFD id
Returns:
The title (label) of the tag.

const char * Exiv2::ExifTags::tagLabel ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the title (label) of the tag.

Parameters:
tag The tag
ifdId IFD id
Returns:
The title (label) of the tag.

const char * Exiv2::ExifTags::tagDesc ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the description of the tag.

Parameters:
tag The tag
ifdId IFD id
Returns:
The description of the tag or a string indicating that the tag is unknown.

uint16_t Exiv2::ExifTags::tag ( const std::string &  tagName,
IfdId  ifdId 
) [static]

Return the tag for one combination of IFD id and tagName. If the tagName is not known, it expects tag names in the form "0x01ff" and converts them to unsigned integer.

Exceptions:
Error if the tagname or ifdId is invalid

const char * Exiv2::ExifTags::sectionName ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the name of the section for a combination of tag and IFD id.

Parameters:
tag The tag
ifdId IFD id
Returns:
The name of the section or a string indicating that the section or the tag is unknown.

const char * Exiv2::ExifTags::sectionDesc ( uint16_t  tag,
IfdId  ifdId 
) [static]

Return the description of the section for a combination of tag and IFD id.

Parameters:
tag The tag
ifdId IFD id
Returns:
The description of the section or a string indicating that the section or the tag is unknown.

The documentation for this class was generated from the following files: