gstreamer-rs/gstreamer/src/child_proxy.rs

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// Take a look at the license at the top of the repository in the LICENSE file.
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use crate::ChildProxy;
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use glib::prelude::*;
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use glib::translate::*;
use std::ptr;
pub trait ChildProxyExtManual: 'static {
#[doc(alias = "get_child_property")]
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fn child_property(&self, name: &str) -> Option<glib::Value>;
fn set_child_property<V: glib::ToValue>(
&self,
name: &str,
value: V,
) -> Result<(), glib::BoolError>;
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}
impl<O: IsA<ChildProxy>> ChildProxyExtManual for O {
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fn child_property(&self, name: &str) -> Option<glib::Value> {
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unsafe {
let found: bool = from_glib(ffi::gst_child_proxy_lookup(
self.as_ref().to_glib_none().0,
name.to_glib_none().0,
ptr::null_mut(),
ptr::null_mut(),
));
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if !found {
return None;
}
let mut value = glib::Value::uninitialized();
ffi::gst_child_proxy_get_property(
self.as_ref().to_glib_none().0,
name.to_glib_none().0,
value.to_glib_none_mut().0,
);
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Some(value)
}
}
fn set_child_property<V: glib::ToValue>(
&self,
name: &str,
value: V,
) -> Result<(), glib::BoolError> {
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unsafe {
let found: bool = from_glib(ffi::gst_child_proxy_lookup(
self.as_ref().to_glib_none().0,
name.to_glib_none().0,
ptr::null_mut(),
ptr::null_mut(),
));
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if !found {
return Err(glib::bool_error!("Child property not found"));
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}
let value = value.to_value();
ffi::gst_child_proxy_set_property(
self.as_ref().to_glib_none().0,
name.to_glib_none().0,
value.to_glib_none().0,
);
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Ok(())
}
}
}