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Class Hierarchy

Go to the graphical class hierarchy

This inheritance list is sorted roughly, but not completely, alphabetically:

Exiv2::Internal::ArrayCfg | Additional configuration for a binary array
Exiv2::Internal::ArrayDef | Defines one tag in a binary array
Exiv2::Internal::ArraySet | Combination of array configuration and definition for arrays
Exiv2::BasicIo | An interface for simple binary IO
Exiv2::FileIo | Provides binary file IO by implementing the BasicIo interface
Exiv2::XPathIo | Provides binary IO for the data from stdin and data uri path

Exiv2::MemIo

Provides binary IO on blocks of memory by implementing the BasicIo interface. A copy-on-write implementation ensures that the data passed in is only copied when necessary, i.e., as soon as data is written to the MemIo. The original data is only used for reading. If writes are performed, the changed data can be retrieved using the read methods (since the data used in construction is never modified)

Exiv2::RemoteIo | Provides remote binary file IO by implementing the BasicIo interface. This is an abstract class. The logics for remote access are implemented in HttpIo, CurlIo, SshIo which are the derived classes of RemoteIo
Exiv2::HttpIo | Provides the http read/write access for the RemoteIo
Exiv2::Internal::binaryToStringHelper< T > | Helper struct for binary data output via binaryToString
Exiv2::BlockMap | Utility class provides the block mapping to the part of data. This avoids allocating a single contiguous block of memory to the big data
Exiv2::Internal::CanonMakerNote | MakerNote for Canon cameras
Exiv2::Internal::Casio2MakerNote | MakerNote for Casio2 cameras
Exiv2::Internal::CasioMakerNote | MakerNote for Casio cameras
Exiv2::CommentValue::CharsetInfo | Charset information lookup functions. Implemented as a static class
Exiv2::CommentValue::CharsetTable | Information pertaining to the defined character sets
Exiv2::Internal::CiffComponent | Interface class for components of the CIFF directory hierarchy of a CRW (Canon Raw data) image. Both CIFF directories as well as entries implement this interface. This class is implemented as NVI (non-virtual interface)
Exiv2::Internal::CiffDirectory | This class models a CIFF directory of a CRW (Canon Raw data) image
Exiv2::Internal::CiffEntry | This class models one directory entry of a CIFF directory of a CRW (Canon Raw data) image
Exiv2::Internal::CiffHeader | This class models the header of a CRW (Canon Raw data) image. It is the head of a CIFF parse tree, consisting of CiffDirectory and CiffEntry objects. Most of its methods will walk the parse tree to perform the requested action
CmdIdAndString | Structure to link command identifiers to strings
Exiv2::Internal::ContainerStorage< container > |
Exiv2::Internal::ContainerStorage< const container > |
Exiv2::Internal::ContainerStorage< T > |
Exiv2::Converter::Conversion | Structure to define conversions between two keys
Exiv2::Converter | Metadata conversions
Exiv2::Cr2Parser | Stateless parser class for data in CR2 format. Images use this class to decode and encode CR2 data. See class TiffParser for details
Exiv2::Internal::CrwMap | Static class providing mapping functionality from CRW entries to image metadata and vice versa
Exiv2::Internal::CrwMapping | Structure for a mapping table for conversion of CIFF entries to image metadata and vice versa
Exiv2::CrwParser |
Exiv2::Internal::CrwSubDir | Structure for the CIFF directory hierarchy
Exiv2::DataBuf | Utility class containing a character array. All it does is to take care of memory allocation and deletion. Its primary use is meant to be as a stack variable in functions that need a temporary data buffer
Exiv2::DataBufRef | Auxiliary type to enable copies and assignments, similar to std::auto_ptr_ref. See http://www.josuttis.com/libbook/auto_ptr.html for a discussion
Exiv2::DataSet | Details of an IPTC dataset
Exiv2::DateValue::Date | Simple Date helper structure
Safe::Internal::enable_if< B, T > | Helper struct for SFINAE, from C++11
Safe::Internal::enable_if< true, T > | Specialization of enable_if for the case B == true
std::exception | STL class
Exiv2::AnyError | Error class interface. Allows the definition and use of a hierarchy of error classes which can all be handled in one catch block. Inherits from the standard exception base-class, to make life easier for library users (they have the option of catching most things via std::exception)
Exiv2::BasicError< charT > | Simple error class used for exceptions. An output operator is provided to print errors to a stream
Exiv2::Internal::LensInfoNotFound |
Exiv2::ExifData | A container for Exif data. This is a top-level class of the Exiv2 library. The container holds Exifdatum objects
Exiv2::ExifParser | Stateless parser class for Exif data. Images use this class to decode and encode binary Exif data
Exiv2::ExifTags | Access to Exif group and tag lists and misc. tag reference methods, implemented as a static class
Exiv2::ExifThumbC | Access to a Exif thumbnail image. This class provides higher level accessors to the thumbnail image that is optionally embedded in IFD1 of the Exif data. These methods do not write to the Exif metadata. Manipulators are provided in subclass ExifThumb
Exiv2::ExifThumb | Access and modify an Exif thumbnail image. This class implements manipulators to set and erase the thumbnail image that is optionally embedded in IFD1 of the Exif data. Accessors are provided by the base class, ExifThumbC
Exiv2_grep_key_t | Exv_grep_key_t is a simple string and the ignore flag
Exiv2::Internal::FindExifdatum | Unary predicate that matches an Exifdatum with a given IfdId
Exiv2::Internal::FujiMakerNote | MakerNote for Fujifilm cameras
Util::Getopt |
Params | Implements the command line handling for the program
GroupName |
Exiv2::GroupInfo | The details of an Exif group. Groups include IFDs and binary arrays
Exiv2::Iloc |
Exiv2::Image | Abstract base class defining the interface for an image. This is the top-level interface to the Exiv2 library
Exiv2::AsfVideo | Class to access ASF video files
Exiv2::BmffImage | Class to access BMFF images
Exiv2::BmpImage | Class to access Windows bitmaps. This is just a stub - we only read width and height
Exiv2::Cr2Image | Class to access raw Canon CR2 images. Exif metadata is supported directly, IPTC is read from the Exif data, if present
Exiv2::CrwImage | Class to access raw Canon CRW images. Only Exif metadata and a comment are supported. CRW format does not contain IPTC metadata
Exiv2::EpsImage | Class to access EPS images
Exiv2::GifImage | Class to access raw GIF images. Exif/IPTC metadata are supported directly
Exiv2::Jp2Image | Class to access JPEG-2000 images
Exiv2::JpegBase | Abstract helper base class to access JPEG images
Exiv2::ExvImage | Helper class to access Exiv2 files
Exiv2::JpegImage | Class to access JPEG images
Exiv2::MatroskaVideo | Class to access Matroska video files
Exiv2::MrwImage | Class to access raw Minolta MRW images. Exif metadata is supported directly, IPTC is read from the Exif data, if present
Exiv2::PgfImage | Class to access PGF images. Exif and IPTC metadata are supported directly
Exiv2::PngImage | Class to access PNG images. Exif and IPTC metadata are supported directly
Exiv2::PsdImage | Class to access raw Photoshop images
Exiv2::QuickTimeVideo | Class to access QuickTime video files
Exiv2::RafImage | Class to access raw Fujifilm RAF images. Exif metadata is supported directly, IPTC is read from the Exif data, if present
Exiv2::RiffVideo | Class to access RIFF video files
Exiv2::Rw2Image | Class to access raw Panasonic RW2 images. Exif metadata is supported directly, IPTC and XMP are read from the Exif data, if present
Exiv2::TgaImage | Class to access raw TARGA images. This is just a stub - we only read width and height
Exiv2::TiffImage | Class to access TIFF images. Exif metadata is supported directly, IPTC is read from the Exif data, if present
Exiv2::OrfImage | Class to access raw Olympus ORF images. Exif metadata is supported directly, IPTC is read from the Exif data, if present
Exiv2::WebPImage | Class to access WEBP video files
Exiv2::XmpSidecar | Class to access XMP sidecar files. They contain only XMP metadata
Exiv2::ImageFactory | Returns an Image instance of the specified type
Exiv2::ExifKey::Impl | Internal Pimpl structure with private members and data of class ExifKey
Exiv2::FileIo::Impl | Internal Pimpl structure of class FileIo
Exiv2::MemIo::Impl | Internal Pimpl structure of class MemIo
Exiv2::RemoteIo::Impl | Internal Pimpl abstract structure of class RemoteIo
Exiv2::HttpIo::HttpImpl | Internal Pimpl structure of class HttpIo
Exiv2::INIReader | Read an INI file into easy-to-access name/value pairs. (Note that I've gone for simplicity here rather than speed, but it should be pretty decent.)
Exiv2::IoCloser | Utility class that closes a BasicIo instance upon destruction. Meant to be used as a stack variable in functions that need to ensure BasicIo instances get closed. Useful when functions return errors from many locations
Exiv2::Internal::IoWrapper | Simple IO wrapper to ensure that the header is only written if there is any other data at all
Exiv2::IptcData | A container for IPTC data. This is a top-level class of the Exiv2 library
Exiv2::IptcDataSets | IPTC dataset reference, implemented as a static class
Exiv2::IptcParser | Stateless parser class for IPTC data. Images use this class to decode and encode binary IPTC data
Safe::Internal::is_signed< T > | Helper struct to determine whether a type is signed or unsigned
Exiv2::Internal::Jp2BoxHeader |
Exiv2::Internal::Jp2ImageHeaderBox |
Exiv2::Internal::Jp2UuidBox |
Exiv2::Internal::NikonArrayIdx::Key | Key for comparisons
Exiv2::Internal::TiffGroupStruct::Key | Search key for TIFF group structure
Exiv2::Internal::TiffImgTagStruct::Key | Search key for TIFF image tag structure
Exiv2::Internal::TiffMappingInfo::Key | Search key for TIFF mapping structures
Exiv2::Internal::TiffTreeStruct::Key | Search key for TIFF tree structure
Exiv2::Key | Abstract base class defining the Key of a metadatum. Keys are used to identify and group metadata
Exiv2::ExifKey | Concrete keys for Exif metadata and access to Exif tag reference data
Exiv2::IptcKey | Concrete keys for IPTC metadata
Exiv2::XmpKey | Concrete keys for XMP metadata
Exiv2::LangAltValueComparator | LangAltValueComparator
Exiv2::Internal::LensIdFct | A lens id and a pretty-print function for special treatment of the id
Exiv2::Internal::LensTypeAndFocalLengthAndMaxAperture | Helper structure
Exiv2::LogMsg | Class for a log message, used by the library. Applications can set the log level and provide a customer log message handler (callback function)
Exiv2::MatroskaTags | Helper structure for the Matroska tags lookup table
Exiv2::Metadatum | Abstract base class defining the interface to access information related to one metadata tag
Exiv2::Exifdatum | An Exif metadatum, consisting of an ExifKey and a Value and methods to manipulate these
Exiv2::Iptcdatum | An IPTC metadatum ("dataset"), consisting of an IptcKey and a Value and methods to manipulate these
Exiv2::Xmpdatum | Information related to an XMP property. An XMP metadatum consists of an XmpKey and a Value and provides methods to manipulate these
Exiv2::MimeTypeList | Structure for TIFF compression to MIME type mappings
Exiv2::Internal::MinoltaMakerNote | MakerNote for Minolta cameras
Exiv2::Internal::MnHeader | Makernote header interface. This class is used with TIFF makernotes
Exiv2::Internal::Casio2MnHeader | Header of a Casio2 Makernote
Exiv2::Internal::FujiMnHeader | Header of a Fujifilm Makernote
Exiv2::Internal::Nikon2MnHeader | Header of a Nikon 2 Makernote
Exiv2::Internal::Nikon3MnHeader | Header of a Nikon 3 Makernote
Exiv2::Internal::OMSystemMnHeader | Header of an OM Digital Solutions (ex Olympus) Makernote
Exiv2::Internal::Olympus2MnHeader | Header of an Olympus II Makernote
Exiv2::Internal::OlympusMnHeader | Header of an Olympus Makernote
Exiv2::Internal::PanasonicMnHeader | Header of a Panasonic Makernote
Exiv2::Internal::PentaxDngMnHeader | Header of an Pentax DNG Makernote
Exiv2::Internal::PentaxMnHeader | Header of an Pentax Makernote
Exiv2::Internal::SamsungMnHeader | Header of a Samsung Makernote, only used for the relative offset
Exiv2::Internal::SigmaMnHeader | Header of a Sigma Makernote
Exiv2::Internal::SonyMnHeader | Header of a Sony Makernote
ModifyCmd | Structure for one parsed modification command
Exiv2::NativePreview | Native preview information. This is meant to be used only by the PreviewManager
Exiv2::Internal::Nikon1MakerNote | A MakerNote format used by Nikon cameras, such as the E990 and D1
Exiv2::Internal::Nikon2MakerNote | A second MakerNote format used by Nikon cameras, including the E700, E800, E900, E900S, E910, E950
Exiv2::Internal::Nikon3MakerNote | A third MakerNote format used by Nikon cameras, e.g., E5400, SQ, D2H, D70
Exiv2::Internal::NikonArrayIdx | Structure for an index into the array set of complex binary arrays
Exiv2::XmpNsInfo::Ns | For comparison with namespace
Exiv2::Internal::OffsetWriter | Class to insert pointers or offsets to computed addresses at specific locations in an image. Used for offsets which are best computed during the regular write process. They are written in a second pass, using the writeOffsets() method
Exiv2::Internal::OlympusMakerNote | MakerNote for Olympus cameras
Exiv2::OrfParser | Stateless parser class for data in ORF format. Images use this class to decode and encode ORF data. See class TiffParser for details
Exiv2::Internal::PanasonicMakerNote | MakerNote for Panasonic cameras
Exiv2::Internal::PentaxMakerNote | MakerNote for Pentaxfilm cameras
Exiv2::Photoshop | Helper class, has methods to deal with Photoshop "Information Resource Blocks" (IRBs)
Exiv2::Internal::PngChunk | Stateless parser class for data in PNG chunk format. Images use this class to decode and encode PNG-based data
Exiv2::XmpNsInfo::Prefix | For comparison with prefix
Exiv2::PreviewImage | Class that holds preview image properties and data buffer
Exiv2::PreviewManager | Class for extracting preview images from image metadata
Exiv2::PreviewProperties | Preview image properties
Exiv2::Internal::PtrSliceStorage< storage_type > | Implementation of the storage concept for slices of C arrays
Exiv2::Internal::PtrSliceStorage< const T * > |
Exiv2::Internal::PtrSliceStorage< T * > |
Exiv2::RecordInfo | Details of an IPTC record
Exiv2::Internal::remove_const< T > |
Exiv2::Internal::remove_const< const T > |
Exiv2::Internal::remove_cv< T > |
Exiv2::Internal::remove_pointer< T > |
Exiv2::Internal::remove_pointer< T * > |
Exiv2::Internal::remove_pointer< T *const > |
Exiv2::Internal::remove_volatile< T > |
Exiv2::Internal::remove_volatile< volatile T > |
Exiv2::Rw2Parser | Stateless parser class for data in RW2 format. Images use this class to decode and encode RW2 data. Only decoding is currently implemented. See class TiffParser for details
Exiv2::RWLock | Class to provide a Read-Write Lock
Exiv2::Internal::Samsung2MakerNote | MakerNote for Samsung cameras
Exiv2::ScopedReadLock | Class to provide a ScopedReadLock. The lock is applied by the constructor and released by the destructor
Exiv2::ScopedWriteLock | Class to provide a ScopedWriteLock. The lock is applied by the constructor and released by the destructor
Exiv2::Internal::SectionInfo | The details of a section
Exiv2::Internal::SigmaMakerNote | MakerNote for Sigma (Foveon) cameras
Exiv2::Internal::SliceBase |
Exiv2::Internal::ConstSliceBase< Internal::ContainerStorage, container > |
Exiv2::Internal::ConstSliceBase< Internal::PtrSliceStorage, T * > |
Exiv2::Internal::ConstSliceBase< Internal::PtrSliceStorage, const T * > |
Exiv2::Slice< const T * > |
Exiv2::Internal::ConstSliceBase< Internal::ContainerStorage, const container > |
Exiv2::Slice< const container > | Specialization of slices for constant containers
Exiv2::Internal::ConstSliceBase< Internal::ContainerStorage, T > |
Exiv2::Internal::ConstSliceBase< storage_type, data_type > | This class provides the public-facing const-qualified methods of a slice
Exiv2::Internal::MutableSliceBase< Internal::ContainerStorage, container > |
Exiv2::Slice< container > | Slice (= view) for STL containers
Exiv2::Internal::MutableSliceBase< Internal::PtrSliceStorage, T * > |
Exiv2::Slice< T * > |
Exiv2::Internal::MutableSliceBase< Internal::ContainerStorage, T > |
Exiv2::Internal::MutableSliceBase< storage_type, data_type > |
Exiv2::Slice< T > |
Exiv2::Internal::SonyMakerNote | MakerNote for Sony cameras
Exiv2::FileIo::Impl::StructStat | Simple struct stat wrapper for internal use
Exiv2::Internal::TagDetails | Helper structure for lookup tables for translations of numeric tag values to human readable labels
Exiv2::Internal::TagDetailsBitmask | Helper structure for lookup tables for translations of bitmask values to human readable labels
Exiv2::TagInfo | Tag information
Exiv2::Internal::TagVocabulary | Helper structure for lookup tables for translations of controlled vocabulary strings to their descriptions
Exiv2::Internal::TiffComponent | Interface class for components of a TIFF directory hierarchy (Composite pattern). Both TIFF directories as well as entries implement this interface. A component can be uniquely identified by a tag, group tupel. This class is implemented as a NVI (Non-Virtual Interface) and it has an interface for visitors (Visitor pattern) to perform operations on all components
Exiv2::Internal::TiffDirectory | This class models a TIFF directory (Ifd). It is a composite component of the TIFF tree
Exiv2::Internal::TiffEntryBase | This abstract base class provides the common functionality of an IFD directory entry and defines an extended interface for derived concrete entries, which allows access to the attributes of the entry
Exiv2::Internal::TiffBinaryArray | Composite to model an array of different tags. The tag types as well as other aspects of the array are configurable. The elements of this component are of type TiffBinaryElement
Exiv2::Internal::TiffBinaryElement | Element of a TiffBinaryArray

Exiv2::Internal::TiffDataEntryBase

Interface for a standard TIFF IFD entry consisting of a value which is a set of offsets to a data area. The sizes of these "strips" are provided in a related TiffSizeEntry, tag and group of which are set in the constructor. The implementations of this interface differ in whether the data areas are extracted to the higher level metadata (TiffDataEntry) or not (TiffImageEntry)

Exiv2::Internal::TiffDataEntry | A standard TIFF IFD entry consisting of a value which is an offset to a data area and the data area. The size of the data area is provided in a related TiffSizeEntry, tag and group of which are set in the constructor
Exiv2::Internal::TiffImageEntry | A standard TIFF IFD entry consisting of a value which is an array of offsets to image data areas. The sizes of the image data areas are provided in a related TiffSizeEntry, tag and group of which are set in the constructor
Exiv2::Internal::TiffEntry | A standard TIFF IFD entry
Exiv2::Internal::TiffMnEntry | This class is the basis for Makernote support in TIFF. It contains a pointer to a concrete Makernote. The TiffReader visitor has the responsibility to create the correct Make/Model specific Makernote for a particular TIFF file. Calls to child management methods are forwarded to the concrete Makernote, if there is one
Exiv2::Internal::TiffSizeEntry | A TIFF IFD entry containing the size of a data area of a related TiffDataEntry. This component is used, e.g. for Exif.Thumbnail.JPEGInterchangeFormatLength, which contains the size of Exif.Thumbnail.JPEGInterchangeFormat
Exiv2::Internal::TiffSubIfd | This class models a TIFF sub-directory (sub-IFD). A sub-IFD is an entry with one or more values that are pointers to IFD structures containing an IFD. The TIFF standard defines some important tags to be sub-IFDs, including the Exif and GPS tags
Exiv2::Internal::TiffIfdMakernote | Tiff IFD Makernote. This is a concrete class suitable for all IFD makernotes
Exiv2::Internal::TiffCreator | TIFF component factory
Exiv2::Internal::TiffGroupStruct | Data structure used as a row (element) of a table (array) defining the TIFF component used for each tag in a group
Exiv2::Internal::TiffHeaderBase | Abstract base class defining the interface of an image header. Used internally by classes for TIFF-based images. Default implementation is for the regular TIFF header
Exiv2::Internal::Cr2Header | Canon CR2 header structure
Exiv2::Internal::OrfHeader | Olympus ORF header structure
Exiv2::Internal::Rw2Header | Panasonic RW2 header structure
Exiv2::Internal::TiffHeader | Standard TIFF header structure
Exiv2::Internal::TiffImgTagStruct | Data structure used to list image tags for TIFF and TIFF-like images
Exiv2::Internal::TiffMapping | Table of TIFF decoding and encoding functions and find functions. This class is separated from the metadata decoder and encoder visitors so that the parser can be parametrized with a different table if needed. This is used, eg., for CR2 format, which uses a different decoder table
Exiv2::Internal::TiffMappingInfo | TIFF mapping table for functions to decode special cases
Exiv2::Internal::TiffMnCreator | TIFF makernote factory for concrete TIFF makernotes
Exiv2::Internal::TiffMnRegistry | Makernote registry structure
Exiv2::TiffParser | Stateless parser class for data in TIFF format. Images use this class to decode and encode TIFF data. It is a wrapper of the internal class Internal::TiffParserWorker
Exiv2::Internal::TiffParserWorker | Stateless parser class for data in TIFF format. Images use this class to decode and encode TIFF-based data
Exiv2::Internal::TiffPathItem | A tupel consisting of extended Tag and group used as an item in TIFF paths
Exiv2::Internal::TiffRwState | Simple state class containing relevant state information for the TIFF reader. This is in a separate class so that the reader can change state if needed (e.g., to read certain complex makernotes)
Exiv2::Internal::TiffTreeStruct | Data structure used as a row of the table which describes TIFF trees. Multiple trees are needed as TIFF-based RAW image formats do not always use standard TIFF layout
Exiv2::Internal::TiffVisitor | Abstract base class defining the interface for TIFF composite visitors (Visitor pattern)
Exiv2::Internal::TiffCopier | Copy all image tags from the source tree (the tree that is traversed) to a target tree, which is empty except for the root element provided in the constructor
Exiv2::Internal::TiffDecoder | TIFF composite visitor to decode metadata from the TIFF tree and add it to an Image, which is supplied in the constructor (Visitor pattern). Used by TiffParser to decode the metadata from a TIFF composite
Exiv2::Internal::TiffEncoder | TIFF composite visitor to encode metadata from an image to the TIFF tree. The metadata containers and root element of the tree are supplied in the constructor. Used by TiffParserWorker to encode the metadata into a TIFF composite
Exiv2::Internal::TiffFinder | Search the composite for a component with tag and group. Return a pointer to the component or 0, if not found. The class is ready for a first search after construction and can be re-initialized with init()
Exiv2::Internal::TiffReader | TIFF composite visitor to read the TIFF structure from a block of memory and build the composite from it (Visitor pattern). Used by TiffParser to read the TIFF data from a block of memory
Exiv2::TimeValue::Time | Simple Time helper structure
Exiv2::TypeInfo | Type information lookup functions. Implemented as a static class
Exiv2::Uri | A container for URL components. It also provides the method to parse a URL to get the protocol, host, path, port, querystring, username, password
Exiv2::UtilsVideo | Class of utility functions used by the video code
Exiv2::Value | Common interface for all types of values used with metadata
Exiv2::DataValue | Value for an undefined data type
Exiv2::DateValue | Value for simple ISO 8601 dates
Exiv2::StringValueBase | Abstract base class for a string based Value type
Exiv2::AsciiValue | Value for an Ascii string type
Exiv2::CommentValue | Value for an Exif comment
Exiv2::StringValue | Value for string type
Exiv2::TimeValue | Value for simple ISO 8601 times
Exiv2::ValueType< T > | Template for a Value of a basic type. This is used for unsigned and signed short, long and rationals
Exiv2::XmpValue | Base class for all Exiv2 values used to store XMP property values
Exiv2::LangAltValue | Value type for XMP language alternative properties
Exiv2::XmpArrayValue | Value type for simple arrays. Each item in the array is a simple value, without qualifiers. The array may be an ordered (seq), unordered (bag) or alternative array (alt). The array items must not contain qualifiers. For language alternatives use LangAltValue
Exiv2::XmpTextValue | Value type suitable for simple XMP properties and XMP nodes of complex types which are not parsed into specific values
Exiv2::XmpData | A container for XMP data. This is a top-level class of the Exiv2 library
Exiv2::XmpNsInfo | Structure mapping XMP namespaces and (preferred) prefixes
Exiv2::XmpParser | Stateless parser class for XMP packets. Images use this class to parse and serialize XMP packets. The parser uses the XMP toolkit to do the job
Exiv2::XmpProperties | XMP property reference, implemented as a static class
Exiv2::XmpPropertyInfo | Information about one XMP property
Params::YodAdjust | Structure for year, month and day adjustment command line arguments