GstImplementsInterface

GstImplementsInterface — Core interface implemented by GstElements that allows runtime querying of interface availabillity

Synopsis


#include <gst/gst.h>


struct      GstImplementsInterface;
#define     GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST(obj, type, cast_t)
#define     GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE(obj, type)
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);

Object Hierarchy


  GInterface
   +----GstImplementsInterface

Prerequisites

GstImplementsInterface requires GstElement.

Description

Details

struct GstImplementsInterface

struct GstImplementsInterface;

GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST()

#define     GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST(obj, type, cast_t)

`obj` :
`type` :
`cast_t` :

GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE()

#define     GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE(obj, type)

`obj` :
`type` :

gst_element_implements_interface ()

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.

`element` :	GstElement to check for the implementation of the interface
`iface_type` :	(final) type of the interface which we want to be implemented
Returns :	whether or not the element implements the interface.

gst_implements_interface_cast ()

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.

`from` :	the object (any sort) from which to cast to the interface
`type` :	the interface type to cast to
Returns :	a gpointer to the interface type

gst_implements_interface_check ()

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.

`from` :	the object (any sort) from which to check from for the interface
`type` :	the interface type to check for
Returns :	whether or not the object implements the given interface