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GstChildProxyGstChildProxy — |
#include <gst/gst.h> guint gst_child_proxy_get_children_count (GstChildProxy *parent); GstObject* gst_child_proxy_get_child_by_name (GstChildProxy *parent, const gchar *name); GstObject* gst_child_proxy_get_child_by_index (GstChildProxy *parent, guint index); gboolean gst_child_proxy_lookup (GstObject *object, const gchar *name, GstObject **target, GParamSpec **pspec); void gst_child_proxy_get_property (GstObject *object, const gchar *name, GValue *value); void gst_child_proxy_get_valist (GstObject *object, const gchar *first_property_name, va_list var_args); void gst_child_proxy_get (GstObject *object, const gchar *first_property_name, ...); void gst_child_proxy_set_property (GstObject *object, const gchar *name, const GValue *value); void gst_child_proxy_set_valist (GstObject *object, const gchar *first_property_name, va_list var_args); void gst_child_proxy_set (GstObject *object, const gchar *first_property_name, ...); void gst_child_proxy_child_added (GstObject *object, GstObject *child); void gst_child_proxy_child_removed (GstObject *object, GstObject *child);
guint gst_child_proxy_get_children_count (GstChildProxy *parent);
Gets the number of child objects this parent contains.
parent : | the parent object |
Returns : | the number of child objects MT safe. |
GstObject* gst_child_proxy_get_child_by_name (GstChildProxy *parent, const gchar *name);
Looks up a child element by the given name.
Implementors can use GstObject together with gst_object_get_name()
parent : | the parent object to get the child from |
name : | the childs name |
Returns : | the child object or NULL if not found. Unref after usage.
MT safe.
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GstObject* gst_child_proxy_get_child_by_index (GstChildProxy *parent, guint index);
Fetches a child by its number.
parent : | the parent object to get the child from |
index : | the childs position in the child list |
Returns : | the child object or NULL if not found (index too high). Unref
after usage.
MT safe.
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gboolean gst_child_proxy_lookup (GstObject *object, const gchar *name, GstObject **target, GParamSpec **pspec);
Looks up which object and GParamSpec would be effected by the given name
.
object : | object to lookup the property in |
name : | name of the property to look up |
target : | pointer to a GstObject that takes the real object to set property on |
pspec : | pointer to take the GParamSpec describing the property |
Returns : | TRUE if target and pspec could be found. FALSE otherwise. In that
case the values for pspec and target are not modified. Unref target after
usage.
MT safe.
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void gst_child_proxy_get_property (GstObject *object, const gchar *name, GValue *value);
Gets a single property using the GstChildProxy mechanism.
You are responsible for for freeing it by calling g_value_unset()
object : | object to query |
name : | name of the property |
value : | an uninitialized GValue that should take the result. |
void gst_child_proxy_get_valist (GstObject *object, const gchar *first_property_name, va_list var_args);
Gets properties of the parent object and its children.
object : | the object to query |
first_property_name : | name of the first property to get |
var_args : | return location for the first property, followed optionally by more name/return location pairs, followed by NULL |
void gst_child_proxy_get (GstObject *object, const gchar *first_property_name, ...);
Gets properties of the parent object and its children.
object : | the parent object |
first_property_name : | name of the first property to get |
... : | return location for the first property, followed optionally by more name/return location pairs, followed by NULL |
void gst_child_proxy_set_property (GstObject *object, const gchar *name, const GValue *value);
Sets a single property using the GstChildProxy mechanism.
object : | the parent object |
name : | name of the property to set |
value : | new GValue for the property |
void gst_child_proxy_set_valist (GstObject *object, const gchar *first_property_name, va_list var_args);
Sets properties of the parent object and its children.
object : | the parent object |
first_property_name : | name of the first property to set |
var_args : | value for the first property, followed optionally by more name/value pairs, followed by NULL |
void gst_child_proxy_set (GstObject *object, const gchar *first_property_name, ...);
Sets properties of the parent object and its children.
object : | the parent object |
first_property_name : | name of the first property to set |
... : | value for the first property, followed optionally by more name/value pairs, followed by NULL |
void gst_child_proxy_child_added (GstObject *object, GstObject *child);
Emits the "child-added" signal.
object : | the parent object |
child : | the newly added child |
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