feat: Get iced-video working

gst/src/pad.rs

@@ -1,8 +1,9 @@
 use crate::priv_prelude::*;
-/// Pads are link points between elements
+
 wrap_gst!(Pad, gstreamer::Pad);
 
 impl Pad {
+    #[track_caller]
     pub fn ghost(target: &Pad) -> Result<Pad> {
         let ghost_pad = gstreamer::GhostPad::with_target(&target.inner)
             .change_context(Error)
@@ -12,6 +13,7 @@ impl Pad {
         })
     }
 
+    #[track_caller]
     pub fn link(&self, peer: &Pad) -> Result<()> {
         use gstreamer::prelude::*;
         self.inner
@@ -21,6 +23,7 @@ impl Pad {
         Ok(())
     }
 
+    #[track_caller]
     pub fn current_caps(&self) -> Result<Caps> {
         let caps = self
             .inner
@@ -30,6 +33,7 @@ impl Pad {
         Ok(Caps { inner: caps })
     }
 
+    #[track_caller]
     pub fn activate(&self, activate: bool) -> Result<()> {
         use gstreamer::prelude::*;
         self.inner