From 7aec1816f98225e4b862c6298a174d7b2f927306 Mon Sep 17 00:00:00 2001
From: Matthew Waters <matthew@centricular.com>
Date: Mon, 3 Jun 2024 00:27:17 +1000
Subject: [PATCH] vulkan: add subclass support for VulkanVideoFilter

---
 gstreamer-vulkan/src/lib.rs                     |  2 ++
 gstreamer-vulkan/src/subclass/mod.rs            |  8 ++++++++
 .../src/subclass/vulkan_video_filter.rs         | 17 +++++++++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 gstreamer-vulkan/src/subclass/mod.rs
 create mode 100644 gstreamer-vulkan/src/subclass/vulkan_video_filter.rs

diff --git a/gstreamer-vulkan/src/lib.rs b/gstreamer-vulkan/src/lib.rs
index 30c8e23f8..ba28f95cf 100644
--- a/gstreamer-vulkan/src/lib.rs
+++ b/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::*;
diff --git a/gstreamer-vulkan/src/subclass/mod.rs b/gstreamer-vulkan/src/subclass/mod.rs
new file mode 100644
index 000000000..305e81b7f
--- /dev/null
+++ b/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};
+}
diff --git a/gstreamer-vulkan/src/subclass/vulkan_video_filter.rs b/gstreamer-vulkan/src/subclass/vulkan_video_filter.rs
new file mode 100644
index 000000000..b4ab6e316
--- /dev/null
+++ b/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 {}