vulkan: add subclass support for VulkanVideoFilter

gstreamer-vulkan/src/lib.rs

@@ -39,5 +39,7 @@ pub mod prelude {
     pub use crate::auto::traits::*;
 }
 
+pub mod subclass;
+
 mod caps_features;
 pub use caps_features::*;

gstreamer-vulkan/src/subclass/mod.rs

@@ -0,0 +1,8 @@
+mod vulkan_video_filter;
+
+pub mod prelude {
+    #[doc(hidden)]
+    pub use gst_video::subclass::prelude::*;
+
+    pub use super::vulkan_video_filter::{VulkanVideoFilterImpl, VulkanVideoFilterImplExt};
+}

gstreamer-vulkan/src/subclass/vulkan_video_filter.rs

@@ -0,0 +1,17 @@
+use crate::VulkanVideoFilter;
+
+use gst::subclass::prelude::*;
+use gst_base::subclass::prelude::*;
+
+pub trait VulkanVideoFilterImpl: VulkanVideoFilterImplExt + BaseTransformImpl {}
+
+mod sealed {
+    pub trait Sealed {}
+    impl<T: super::VulkanVideoFilterImplExt> Sealed for T {}
+}
+
+pub trait VulkanVideoFilterImplExt: sealed::Sealed + ObjectSubclass {}
+
+impl<T: VulkanVideoFilterImpl> VulkanVideoFilterImplExt for T {}
+
+unsafe impl<T: VulkanVideoFilterImpl> IsSubclassable<T> for VulkanVideoFilter {}