feat: Get iced-video working

gst/src/element.rs

@@ -27,6 +27,15 @@ impl Element {
         use gstreamer::prelude::*;
         self.inner.static_pad(name.as_ref()).map(Pad::from)
     }
+
+    pub fn bus(&self) -> Result<Bus> {
+        use gstreamer::prelude::*;
+        self.inner
+            .bus()
+            .map(Bus::from)
+            .ok_or(Error)
+            .attach_with(|| format!("Failed to get bus from Element: {}", self.inner.name()))
+    }
 }
 
 pub trait Sink: ChildOf<Element> {
@@ -108,3 +117,17 @@ pub trait Source: ChildOf<Element> {
     //     Ok(())
     // }
 }
+
+pub trait ElementExt: ChildOf<Element> + Sync {
+    #[track_caller]
+    fn bus(&self) -> Result<Bus> {
+        self.upcast_ref().bus()
+    }
+
+    #[track_caller]
+    fn pad(&self, name: impl AsRef<str>) -> Option<Pad> {
+        self.upcast_ref().pad(name)
+    }
+}
+
+impl<T: ChildOf<Element> + Sync> ElementExt for T {}