exiv2._types

Exiv2 metadata data types and utility classes.

Functions

exvGettext

Translate a string using the gettext framework.

Classes

`AccessMode`	An identifier for each mode of metadata support.
`ByteOrder`	Type to express the byte order (little or big endian).
`DataBuf`	Utility class containing a character array.
`MetadataId`	An identifier for each type of metadata.
`Rational`	std::pair< int32_t,int32_t >
`TypeId`	Exiv2 value type identifiers.
`TypeInfo`	Type information lookup functions.
`URational`	std::pair< uint32_t,uint32_t >

class AccessMode

Bases: IntEnum

An identifier for each mode of metadata support.

Read = 1

ReadWrite = 3

Write = 2

amNone = 0

amRead = 1

amReadWrite = 3

amWrite = 2

none = 0

class ByteOrder

Bases: IntEnum

Type to express the byte order (little or big endian).

bigEndian = 2

invalidByteOrder = 0

littleEndian = 1

class DataBuf

Bases: SwigPyObject

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.

alloc(): Allocate a data buffer of at least the given size. Note that if the requested size is less than the current buffer size, no new memory is allocated and the buffer size doesn’t change.

cmpBytes(): Equivalent to: memcmp(&pData_[offset], buf, bufsize)

data()

Returns a temporary Python memoryview of the object’s data.

Warning

do not resize or delete the object while using the view.

Return type:: memoryview

empty()

reset(): Reset value

resize(): Resize the buffer. Existing data is preserved (like std::realloc()).

size()

class MetadataId

Bases: IntEnum

An identifier for each type of metadata.

Comment = 4

Exif = 1

IccProfile = 16

Iptc = 2

Xmp = 8

mdComment = 4

mdExif = 1

mdIccProfile = 16

mdIptc = 2

mdNone = 0

mdXmp = 8

none = 0

class Rational

Bases: SwigPyObject

std::pair< int32_t,int32_t >

first

second

class TypeId

Bases: IntEnum

Exiv2 value type identifiers.

Used primarily as identifiers when creating Exiv2 Value instances. See exiv2.Value.create(). 0x0000 to 0xffff are reserved for TIFF (Exif) types.

asciiString = 2

comment = 65539

date = 65537

directory = 65540

invalidTypeId = 131070

langAlt = 65545

lastTypeId = 131071

signedByte = 6

signedLong = 9

signedRational = 10

signedShort = 8

string = 65536

tiffDouble = 12

tiffFloat = 11

tiffIfd = 13

time = 65538

undefined = 7

unsignedByte = 1

unsignedLong = 4

unsignedRational = 5

unsignedShort = 3

xmpAlt = 65542

xmpBag = 65543

xmpSeq = 65544

xmpText = 65541

class TypeInfo

Bases: SwigPyObject

Type information lookup functions. Implemented as a static class.

static typeId(): Return the type id for a type name

static typeName(): Return the name of the type, 0 if unknown.

static typeSize(): Return the size in bytes of one element of this type

class URational

Bases: SwigPyObject

std::pair< uint32_t,uint32_t >

first

second

exvGettext(): Translate a string using the gettext framework. This wrapper hides all the implementation details from the interface.