libs: expose GstVaapiMiniObject APIs to all backends.

Make it possible to have all libgstvaapi backends (libs) access to a
common GstVaapiMiniObject API and implementation. This is a minor step
towards full exposure when needed, but restrict it to libgstvaapi at
this time.

1 files changed, 46 insertions, 5 deletions

diff --git a/gst-libs/gst/vaapi/gstvaapiminiobject.h b/gst-libs/gst/vaapi/gstvaapiminiobject.h
index 7131a9d6..562c5fc4 100644
--- a/gst-libs/gst/vaapi/gstvaapiminiobject.h
+++ b/gst-libs/gst/vaapi/gstvaapiminiobject.h
@@ -142,27 +142,68 @@ struct _GstVaapiMiniObjectClass
   GDestroyNotify finalize;
 };
 
-G_GNUC_INTERNAL
 GstVaapiMiniObject *
 gst_vaapi_mini_object_new (const GstVaapiMiniObjectClass * object_class);
 
-G_GNUC_INTERNAL
 GstVaapiMiniObject *
 gst_vaapi_mini_object_new0 (const GstVaapiMiniObjectClass * object_class);
 
-G_GNUC_INTERNAL
 GstVaapiMiniObject *
 gst_vaapi_mini_object_ref (GstVaapiMiniObject * object);
 
-G_GNUC_INTERNAL
 void
 gst_vaapi_mini_object_unref (GstVaapiMiniObject * object);
 
-G_GNUC_INTERNAL
 void
 gst_vaapi_mini_object_replace (GstVaapiMiniObject ** old_object_ptr,
     GstVaapiMiniObject * new_object);
 
+#ifdef IN_LIBGSTVAAPI_CORE
+#undef  gst_vaapi_mini_object_ref
+#define gst_vaapi_mini_object_ref(object) \
+  gst_vaapi_mini_object_ref_internal (object)
+
+#undef  gst_vaapi_mini_object_unref
+#define gst_vaapi_mini_object_unref(object) \
+  gst_vaapi_mini_object_unref_internal (object)
+
+G_GNUC_INTERNAL
+void
+gst_vaapi_mini_object_free (GstVaapiMiniObject * object);
+
+/**
+ * gst_vaapi_mini_object_ref_internal:
+ * @object: a #GstVaapiMiniObject
+ *
+ * Atomically increases the reference count of the given @object by one.
+ * This is an internal function that does not do any run-time type check.
+ *
+ * Returns: The same @object argument
+ */
+static inline GstVaapiMiniObject *
+gst_vaapi_mini_object_ref_internal (GstVaapiMiniObject * object)
+{
+  g_atomic_int_inc (&object->ref_count);
+  return object;
+}
+
+/**
+ * gst_vaapi_mini_object_unref_internal:
+ * @object: a #GstVaapiMiniObject
+ *
+ * Atomically decreases the reference count of the @object by one. If
+ * the reference count reaches zero, the object will be free'd.
+ *
+ * This is an internal function that does not do any run-time type check.
+ */
+static inline void
+gst_vaapi_mini_object_unref_internal (GstVaapiMiniObject * object)
+{
+  if (g_atomic_int_dec_and_test (&object->ref_count))
+    gst_vaapi_mini_object_free (object);
+}
+#endif
+
 G_END_DECLS
 
 #endif /* GST_VAAPI_MINI_OBJECT_H */