|
|
|
GStreamer 0.10 Core Reference Manual | |
|---|---|---|---|---|
| Top | Description | Object Hierarchy | Prerequisites | ||||
GstImplementsInterfaceGstImplementsInterface — Core interface implemented by GstElement instances that allows runtime querying of interface availabillity |
#include <gst/gst.h>
GstImplementsInterface;
gboolean gst_element_implements_interface (GstElement *element,
GType iface_type);
gpointer gst_implements_interface_cast (gpointer from,
GType type);
gboolean gst_implements_interface_check (gpointer from,
GType type);
Provides interface functionality on per instance basis and not per class basis, which is the case for gobject.
typedef struct _GstImplementsInterface GstImplementsInterface;
Opaque GstImplementsInterface structure.
gboolean gst_element_implements_interface (GstElement *element,GType iface_type);
Test whether the given element implements a certain interface of type iface_type, and test whether it is supported for this specific instance.
|
GstElement to check for the implementation of the interface |
|
(final) type of the interface which we want to be implemented |
Returns : |
whether or not the element implements the interface. |
gpointer gst_implements_interface_cast (gpointer from,GType type);
cast a given object to an interface type, and check whether this interface is supported for this specific instance.
|
the object (any sort) from which to cast to the interface |
|
the interface type to cast to |
Returns : |
a gpointer to the interface type. [transfer none] |
gboolean gst_implements_interface_check (gpointer from,GType type);
check a given object for an interface implementation, and check whether this interface is supported for this specific instance.
|
the object (any sort) from which to check from for the interface |
|
the interface type to check for |
Returns : |
whether or not the object implements the given interface |