org.freedesktop.gstreamer.glib

Class GObject

java.lang.Object

org.freedesktop.gstreamer.glib.NativeObject

org.freedesktop.gstreamer.glib.RefCountedObject

org.freedesktop.gstreamer.glib.GObject

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

ColorBalanceChannel, GCancellable, GInetAddress, GSocket, GSocketAddress, GstObject

public abstract class GObject
extends RefCountedObject

GObject is the fundamental type providing the common attributes and methods for all object types in libraries based on the GObject system.

See upstream documentation at https://developer.gnome.org/gobject/stable/gobject-The-Base-Object-Type.html

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	GObject.GCallback
static interface	GObject.GInterface Base interface for classes that implement a GInterface
protected static class	GObject.Handle

Nested classes/interfaces inherited from class org.freedesktop.gstreamer.glib.NativeObject

NativeObject.Initializer, NativeObject.TypeProvider, NativeObject.TypeRegistration<T extends NativeObject>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GObject(GObject.Handle handle, boolean needRef)
protected	GObject(NativeObject.Initializer init)

Method Summary

Modifier and Type	Method and Description
protected <T> void	addCallback(Class<T> listenerClass, T listener, GObject.GCallback cb)
<T> void	connect(Class<T> listenerClass, T listener, com.sun.jna.Callback cb)
<T> void	connect(String signal, Class<T> listenerClass, T listener, com.sun.jna.Callback cb)
<T> void	disconnect(Class<T> listenerClass, T listener)
void	dispose() Dispose this object, and potentially clear (free, unref, etc.) the underlying native object if this object owns the reference.
<T extends NativeObject> T	emit(Class<T> resultType, String signal, Object... arguments)
void	emit(String signal, Object... arguments)
Object	get(String property) Gets the current value of a GObject property.
Object	getPropertyDefaultValue(String property) Gets the default value set to GObject property.
Object	getPropertyMaximumValue(String property) Gets the maximum value should be set to GObject property.
Object	getPropertyMinimumValue(String property) Gets the minimum value should be set to GObject property.
int	getRefCount() Get the reference count for an object.
String	getTypeName() Get the native GType type name.
void	invalidate() Invalidate this object without clearing (free, unref, etc.) the underlying native object.
List<String>	listPropertyNames()
protected <T> void	removeCallback(Class<T> listenerClass, T listener)
void	set(String property, Object data) Sets the value of a GObject property.

Methods inherited from class org.freedesktop.gstreamer.glib.NativeObject

close, disown, equals, getPointer, getRawPointer, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GObject

protected GObject(NativeObject.Initializer init)

GObject

protected GObject(GObject.Handle handle,
                  boolean needRef)

Method Detail

connect

public <T> void connect(Class<T> listenerClass,
                        T listener,
                        com.sun.jna.Callback cb)

connect

public <T> void connect(String signal,
                        Class<T> listenerClass,
                        T listener,
                        com.sun.jna.Callback cb)

disconnect

public <T> void disconnect(Class<T> listenerClass,
                           T listener)

emit

public void emit(String signal,
                 Object... arguments)

emit

public <T extends NativeObject> T emit(Class<T> resultType,
                                       String signal,
                                       Object... arguments)

get

public Object get(String property)

Gets the current value of a GObject property.

Parameters:

property - The name of the property to get.

Returns:

A java value representing the GObject property value.

getPropertyDefaultValue

public Object getPropertyDefaultValue(String property)

Gets the default value set to GObject property.

Parameters:

property - The name of the property.

Returns:

A java value representing the GObject property's default value.

getPropertyMaximumValue

public Object getPropertyMaximumValue(String property)

Gets the maximum value should be set to GObject property.

Parameters:

property - The name of the property.

Returns:

A java value representing the GObject property's maximum value.

getPropertyMinimumValue

public Object getPropertyMinimumValue(String property)

Gets the minimum value should be set to GObject property.

Parameters:

property - The name of the property.

Returns:

A java value representing the GObject property's minimum value.

getRefCount

public int getRefCount()

Get the reference count for an object. Should only really be used for debugging

Returns:

The reference count for the object

getTypeName

public String getTypeName()

Get the native GType type name.

Returns:

GType type name

listPropertyNames

public List<String> listPropertyNames()

set

public void set(String property,
                Object data)

Sets the value of a GObject property.

Parameters:

property - The property to set.

data - The value for the property. This must be of the type expected by gstreamer. As a convenience, NativeEnums will be converted to their int value.

addCallback

protected <T> void addCallback(Class<T> listenerClass,
                               T listener,
                               GObject.GCallback cb)

dispose

public void dispose()

Description copied from class: NativeObject

Dispose this object, and potentially clear (free, unref, etc.) the underlying native object if this object owns the reference.

After calling this method this object should not be used.

Overrides:

dispose in class NativeObject

invalidate

public void invalidate()

Description copied from class: NativeObject

Invalidate this object without clearing (free, unref, etc.) the underlying native object.

After calling this method this object should not be used.

Overrides:

invalidate in class NativeObject

removeCallback

protected <T> void removeCallback(Class<T> listenerClass,
                                  T listener)