The URI to album art of this object.
The artist of this object.
The author of this object.
The creator of this object.
The date of this object.
Pointer to the DublinCore namespace registered with the XML document containing this object.
The description of this object.
The 'dlna:dlnaManaged' attribute.
Pointer to the DLNA metadata namespace registered with the XML document containing this object.
The genre of this object.
The ID of this object.
The ID of the parent container of this object.
Pointer to the PV metadata namespace registered with the XML document containing this object.
Whether this object is restricted.
The title of this object.
The original track number of this object.
Update ID of this object.
The UPnP class of this object.
Pointer to the UPnP namespace registered with the XML document containing this object.
The write status of this object.
The pointer to object node in XML document.
Add a new Artist node to the object and return the associated
#GUPnPDIDLLiteContributor object.
Add a new author node to the object and return the associated
#GUPnPDIDLLiteContributor object.
Add a new creator node to the object and return the associated
#GUPnPDIDLLiteContributor object.
Creates a new descriptor, attaches it to object and returns it.
Creates a new resource, attaches it to object and returns it.
Updates object by applying new_fragments in places of
current_fragments. For current_size and new_size -1 can be
passed when respectively current_fragments and new_fragments are
NULL terminated.
XML fragments of object.
Substitutes for current_fragments.
Creates a binding between source_property on source and target_property
on target.
Whenever the source_property is changed the target_property is
updated using the same value. For instance:
g_object_bind_property (action, "active", widget, "sensitive", 0);
Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.
If flags contains %G_BINDING_BIDIRECTIONAL then the binding will be mutual:
if target_property on target changes then the source_property on source
will be updated as well.
The binding will automatically be removed when either the source or the
target instances are finalized. To remove the binding without affecting the
source and the target you can just call g_object_unref() on the returned
#GBinding instance.
Removing the binding by calling g_object_unref() on it must only be done if
the binding, source and target are only used from a single thread and it
is clear that both source and target outlive the binding. Especially it
is not safe to rely on this if the binding, source or target can be
finalized from different threads. Keep another reference to the binding and
use g_binding_unbind() instead to be on the safe side.
A #GObject can have multiple bindings.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
Creates a binding between source_property on source and target_property
on target, allowing you to set the transformation functions to be used by
the binding.
This function is the language bindings friendly version of g_object_bind_property_full(), using #GClosures instead of function pointers.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
a #GClosure wrapping the transformation function from the source to the target, or %NULL to use the default
a #GClosure wrapping the transformation function from the target to the source, or %NULL to use the default
This function is intended for #GObject implementations to re-enforce a [floating][floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on object. If the freeze count is
non-zero, the emission of "notify" signals on object is
stopped. The signals are queued until the freeze count is decreased
to zero. Duplicate notifications are squashed so that at most one
#GObject::notify signal is emitted for each property modified while the
object is frozen.
This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.
Get the album of the object.
Get the URI to album art of the object.
Creates a string representation of the DIDL-Lite XML fragment related to the object album.
Get the artist of the object. If role is not %NULL, it is set to the role
of the artist if available.
Get the artists of the object.
Creates a string representation of the DIDL-Lite XML fragments related to the object artists.
Get the author of the object.
Get the authors of the object.
Use this function to get a resource from the object that is compatible with
any of the protocols specified in the sink_protocol_info. The value of
sink_protocol_info will typically be acquired from 'Sink' argument of
'GetProtocolInfo' action or 'SinkProtocolInfo' state-variable of a
ConnectionManager service.
If lenient is #TRUE, the first resource in the list is returned instead of
%NULL if none of resources and protocols are found to be compatible.
The SinkProtocolInfo string from MediaRenderer
Enable lenient mode
Get the creator of the object.
Get the creators of the object.
Gets a named field from the objects table of associations (see g_object_set_data()).
name of the key for that association
Get the date of the object.
Creates a string representation of the DIDL-Lite XML fragment related to the object date.
Get the pointer to the DublinCore namespace registered with the XML document containing this object.
Get the description of the object.
Get the descriptors of the object.
Get the 'dlna:dlnaManaged' attribute of the object.
Get the pointer to the DLNA metadata namespace registered with the XML document containing this object.
Get the genre of the object.
Get the ID of the object.
Get the ID of the parent of the object.
Gets a property of an object.
The value can be:
In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset().
Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.
the name of the property to get
return location for the property value
Get the pointer to the PV metadata namespace registered with the XML document containing this object.
This function gets back user data pointers stored via g_object_set_qdata().
A #GQuark, naming the user data pointer
Use this function to retreive resources from the object.
Whether the object is restricted or not.
Get the title of the object.
Creates a string representation of the DIDL-Lite XML fragment related to the object title.
Get the original track number of the object.
Creates a string representation of the DIDL-Lite XML fragment related to the object track number.
Get the update ID of the object.
Get the UPnP class of the object.
Creates a string representation of the DIDL-Lite XML fragment related to the object UPnP class.
Get the pointer to the UPnP namespace registered with the XML document.
Get the write status of the object.
Get the representation of this object as an XML string.
Gets n_properties properties for an object.
Obtained properties will be set to values. All properties must be valid.
Warnings will be emitted and undefined behaviour may result if invalid
properties are passed in.
the names of each property to get
the values of each property to get
Checks whether object has a [floating][floating-ref] reference.
Whehter the restricted attribute exists on object
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
the name of a property installed on the class of object.
Emits a "notify" signal for the property specified by pspec on object.
This function omits the property name lookup, hence it is faster than g_object_notify().
One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with g_object_class_install_property() inside a static array, e.g.:
enum
{
PROP_0,
PROP_FOO,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void
my_object_class_init (MyObjectClass *klass)
{
properties[PROP_FOO] = g_param_spec_int ("foo", "Foo", "The foo",
0, 100,
50,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class,
PROP_FOO,
properties[PROP_FOO]);
}
and then notify a change on the "foo" property with:
g_object_notify_by_pspec (self, properties[PROP_FOO]);
the #GParamSpec of a property installed on the class of object.
Increase the reference count of object, and possibly remove the
[floating][floating-ref] reference, if object has a floating reference.
In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one.
Since GLib 2.56, the type of object will be propagated to the return type
under the same conditions as for g_object_ref().
Releases all references to other objects. This can be used to break reference cycles.
This function should only be called from object system implementations.
Set the album of the object to album.
The album string
Set the URI to album art of the object to album_art.
The URI of album art
Set the Artist of the object to artist.
The Artist
Set the Author of the object to author.
The Author
Set the creator of the object to creator.
The creator
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
If the object already had an association with that name, the old association will be destroyed.
Internally, the key is converted to a #GQuark using g_quark_from_string().
This means a copy of key is kept permanently (even after object has been
finalized) — so it is recommended to only use a small, bounded set of values
for key in your program, to avoid the #GQuark storage growing unbounded.
name of the key
data to associate with that key
Set the date of the object to date.
The date string
Set the description of the object to description.
The description string
Set the 'dlna:dlnaManaged' attribute of the object to dlna_managed.
The #GUPnPOCMFlags.
Set the genre of the object to genre.
The Genre
Set the ID of the object to id.
The ID
Set the ID of the parent of the object to parent_id.
The parent ID
Sets a property on an object.
the name of the property to set
the value
Set the restricted status of object to restricted.
The restricted status
Set the title of the object to title.
The title
Set the original track number of the object to track_number.
The original track number
Set the update ID of the object.
Update ID
Set the UPnP class of the object to upnp_class.
The UPnP class as string.
Set the write status of the object to write_status.
The write status string
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
name of the key
This function gets back user data pointers stored via
g_object_set_qdata() and removes the data from object
without invoking its destroy() function (if any was
set).
Usually, calling this function is only required to update
user data pointers with a destroy notifier, for example:
void
object_add_to_user_list (GObject *object,
const gchar *new_string)
{
// the quark, naming the object data
GQuark quark_string_list = g_quark_from_static_string ("my-string-list");
// retrieve the old string list
GList *list = g_object_steal_qdata (object, quark_string_list);
// prepend new string
list = g_list_prepend (list, g_strdup (new_string));
// this changed 'list', so we need to set it again
g_object_set_qdata_full (object, quark_string_list, list, free_string_list);
}
static void
free_string_list (gpointer data)
{
GList *node, *list = data;
for (node = list; node; node = node->next)
g_free (node->data);
g_list_free (list);
}
Using g_object_get_qdata() in the above example, instead of g_object_steal_qdata() would have left the destroy function set, and thus the partial string list would have been freed upon g_object_set_qdata_full().
A #GQuark, naming the user data pointer
Reverts the effect of a previous call to
g_object_freeze_notify(). The freeze count is decreased on object
and when it reaches zero, queued "notify" signals are emitted.
Duplicate notifications for each property are squashed so that at most one #GObject::notify signal is emitted for each property, in the reverse order in which they have been queued.
It is an error to call this function when the freeze count is zero.
Decreases the reference count of object. When its reference count
drops to 0, the object is finalized (i.e. its memory is freed).
If the pointer to the #GObject may be reused in future (for example, if it is an instance variable of another object), it is recommended to clear the pointer to %NULL rather than retain a dangling pointer to a potentially invalid #GObject instance. Use g_clear_object() for this.
Unset the artists properties of the object.
Unset the update ID property of the object.
Get whether the update ID of the object is set.
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
This function essentially limits the life time of the closure to
the life time of the object. That is, when the object is finalized,
the closure is invalidated by calling g_closure_invalidate() on
it, in order to prevent invocations of the closure with a finalized
(nonexisting) object. Also, g_object_ref() and g_object_unref() are
added as marshal guards to the closure, to ensure that an extra
reference count is held on object during invocation of the
closure. Usually, this function will be called on closures that
use this object as closure data.
#GClosure to watch
Find the #GParamSpec with the given name for an
interface. Generally, the interface vtable passed in as g_iface
will be the default vtable from g_type_default_interface_ref(), or,
if you know the interface has already been loaded,
g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
name of a property to look up.
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
This function is meant to be called from the interface's default
vtable initialization function (the class_init member of
#GTypeInfo.) It must not be called after after class_init has
been called for any object types implementing this interface.
If pspec is a floating reference, it will be consumed.
any interface vtable for the interface, or the default vtable for the interface.
the #GParamSpec for the new property
Lists the properties of an interface.Generally, the interface
vtable passed in as g_iface will be the default vtable from
g_type_default_interface_ref(), or, if you know the interface has
already been loaded, g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
Creates a new instance of a #GObject subtype and sets its properties.
Construction parameters (see %G_PARAM_CONSTRUCT, %G_PARAM_CONSTRUCT_ONLY) which are not explicitly specified are set to their default values.
the type id of the #GObject subtype to instantiate
an array of #GParameter
The album of this object.