Vips.Connection

Subclasses:

Vips.Source, Vips.Target

Methods

Inherited:

Vips.Object (27), GObject.Object (37)

Structs:

Vips.ObjectClass (1), GObject.ObjectClass (5)

	filename ()
	nick ()

Virtual Methods

Inherited:

Vips.Object (9), GObject.Object (7)

Properties

Inherited:

Vips.Object (2)

Name	Type	Flags	Short Description
descriptor	int	r/w	File descriptor for read or write
filename	str	r/w	Name of file to open

Signals

Inherited:

Vips.Object (4), GObject.Object (1)

Fields

Inherited:

Vips.Object (4), GObject.Object (1)

Name	Type	Access	Description
close_descriptor	int	r
descriptor	int	r
parent_object	Vips.Object	r
tracked_descriptor	int	r

Class Details

class Vips.Connection(**kwargs)

Bases:

Vips.Object

Abstract:

Yes

Structure:

Vips.ConnectionClass

An abstract base class representing a source or sink of bytes.

It can be connected to a network socket, for example, or perhaps a Node.js stream, or to an area of memory. This allows it to support operations like JPEG loading, see for example [ctor`Image`.jpegload_source].

Subclass to add other input sources. Use [class`SourceCustom`] and [class`TargetCustom`] to make a source or target with action signals. These classes provide action signals such as:

• [signal`SourceCustom`:py:func:::read<Vips.Connection.signals.read>] for reading data from a custom source.

• [signal`SourceCustom`:py:func:::seek<Vips.Connection.signals.seek>] for seeking within a data stream.

• [signal`TargetCustom`:py:func:::write<Vips.Connection.signals.write>] for writing data to a custom target.

filename()

Returns:

any filename associated with this connection, or NULL.

Return type:

str

nick()

Returns:

a string describing this connection which could be displayed to a user.

Return type:

str

Property Details

Vips.Connection.props.descriptor

Name:

descriptor

Type:

int

Default Value:

0

Flags:

READABLE, WRITABLE

File descriptor for read or write

Vips.Connection.props.filename

Name:

filename

Type:

str

Default Value:

None

Flags:

READABLE, WRITABLE

Name of file to open