Metadata

Bases: object

Metadata class represents a container for image metadata.

This class allows to store metadata of various types (integers, floats, strings, containers) and provides methods for access, conversion, and serialization.

copy(md)

Copy metadata content.

Copies the data from a metadata.

Parameters:

Name	Type	Description	Default
md	Metadata	The metadata to copy	required

index()

Get the type index of the metadata.

Retrieves the index of the metadata type.

Returns:

Type	Description
size_t	The type index

type()

Get the type of the metadata.

Retrieves the type of the metadata.

Returns:

Type	Description
type_info	The type

serialize()

Serialize the metadata.

Provides a serialization interface for Metadata. Must be overridden.

Returns:

Type	Description
str	The serialized form of the metadata

toString()

Convert to string.

Returns a human-readable string representation of the metadata element.

Returns:

Type	Description
str	The string representation

fromString(value, index)

Build from string.

Parses a string and sets the metadata, interpreting it as the specified type index.

Parameters:

Name	Type	Description	Default
value	string	The string to parse	required
index	size_t	The expected type index	required

__init__(*args)

Overload 1:

Default constructor.

Initializes a new instance of the Metadata class.

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Overload 2:

Copy constructor.

Creates a new Metadata instance as a deep copy of an existing one.

Parameters:

Name	Type	Description	Default
md	Metadata	The metadata to copy from | Overload 3: Converting constructor. Initializes a new instance of the Metadata class from a pointer.	required
T		The type of the data	required
data	boolean	The value to store | Overload 5: Constructor from a primitive. Initializes a new instance of the Metadata class with a value of a supported primitive.	required