more subclassing code, start to migrate example

examples/plugins/registered_elements/internal/custombin/register.go

@@ -1,41 +1,45 @@
 package custombin
 
+import (
+	"github.com/diamondburned/gotk4/pkg/gobject/v2"
+	"github.com/go-gst/go-gst/pkg/gst"
+)
+
 // Register needs to be called after gst.Init() to make the gocustombin available in the standard
 // gst element registry. After this call the element can be used like any other gstreamer element
 func Register() bool {
-	panic("Register is not implemented yet")
-	// registered := glib.RegisterSubclassWithConstructor[*customBin](
-	// 	func() *customBin {
-	// 		return &customBin{}
-	// 	},
-	// 	glib.WithOverrides[*customBin, gst.BinOverrides](func(b *customBin) gst.BinOverrides {
-	// 		return gst.BinOverrides{}
-	// 	}),
-	// 	glib.WithClassInit[*gst.BinClass](func(bc *gst.BinClass) {
-	// 		bc.ParentClass().SetStaticMetadata(
-	// 			"custom test source",
-	// 			"Src/Test",
-	// 			"Demo source bin with volume",
-	// 			"Wilhelm Bartel <bartel.wilhelm@gmail.com>",
-	// 		)
+	registered := gst.RegisterBinSubClass[*customBin](
+		"gocustombin",
+		func(class *gst.BinClass) {
+			class.ParentClass().SetStaticMetadata(
+				"custom test source",
+				"Src/Test",
+				"Demo source bin with volume",
+				"Wilhelm Bartel <bartel.wilhelm@gmail.com>",
+			)
+		},
+		nil,
+		gst.BinOverrides[*customBin]{
+			ElementOverrides: gst.ElementOverrides[*customBin]{
+				ObjectOverrides: gst.ObjectOverrides[*customBin]{
+					InitiallyUnownedOverrides: gobject.InitiallyUnownedOverrides[*customBin]{
+						ObjectOverrides: gobject.ObjectOverrides[*customBin]{
+							Constructed: (*customBin).constructed,
+						},
+					},
+				},
+			},
+		},
+		map[string]gobject.SignalDefinition{},
+	)
 
-	// 		bc.ParentClass().AddPadTemplate(gst.NewPadTemplate(
-	// 			"src",
-	// 			gst.PadSrc,
-	// 			gst.PadAlways,
-	// 			gst.CapsFromString("audio/x-raw,channels=2,rate=48000"),
-	// 		))
-	// 	}),
-	// )
-
-	// return gst.ElementRegister(
-	// 	// no plugin:
-	// 	nil,
-	// 	// The name of the element
-	// 	"gocustombin",
-	// 	// The rank of the element
-	// 	uint(gst.RankNone),
-	// 	// The GoElement implementation for the element
-	// 	registered.Type(),
-	// )
+	return gst.ElementRegister(
+		// no plugin:
+		nil,
+		// The name of the element
+		"gocustombin",
+		// The rank of the element
+		uint(gst.RankNone),
+		registered,
+	)
 }