Trait gstreamer::prelude::ChildProxyExtManual
source · pub trait ChildProxyExtManual: 'static {
fn lookup(&self, name: &str) -> Result<(Object, ParamSpec), BoolError>;
fn child_property<V: for<'b> FromValue<'b> + 'static>(&self, name: &str) -> V;
fn child_property_value(&self, name: &str) -> Value;
fn set_child_property(&self, name: &str, value: impl Into<Value>);
fn set_child_property_from_value(&self, name: &str, value: &Value);
}Required Methods§
sourcefn lookup(&self, name: &str) -> Result<(Object, ParamSpec), BoolError>
fn lookup(&self, name: &str) -> Result<(Object, ParamSpec), BoolError>
Looks up which object and GParamSpec would be effected by the given name.
name
name of the property to look up
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. For plain glib::Object target is the same as self.
target
pointer to a glib::Object that
takes the real object to set property on
pspec
pointer to take the GParamSpec
describing the property
sourcefn child_property<V: for<'b> FromValue<'b> + 'static>(&self, name: &str) -> V
fn child_property<V: for<'b> FromValue<'b> + 'static>(&self, name: &str) -> V
Gets a single property using the GstChildProxy mechanism.
You are responsible for freeing it by calling [glib::Value::unset()][crate::glib::Value::unset()]
name
name of the property
Returns
value
a glib::Value that should take the result.
fn child_property_value(&self, name: &str) -> Value
sourcefn set_child_property(&self, name: &str, value: impl Into<Value>)
fn set_child_property(&self, name: &str, value: impl Into<Value>)
Sets a single property using the GstChildProxy mechanism.
name
name of the property to set
value
new glib::Value for the property