msdk: use separate src caps for msdkh265dec

We will add more formats in the src caps of msdkh265dec, so let
msdkh265dec uses separate src caps. Note it doesn't change any
capability

sys/msdk/gstmsdkh265dec.c

@@ -40,6 +40,7 @@
 #endif
 
 #include "gstmsdkh265dec.h"
+#include "gstmsdkvideomemory.h"
 
 GST_DEBUG_CATEGORY_EXTERN (gst_msdkh265dec_debug);
 #define GST_CAT_DEFAULT gst_msdkh265dec_debug
@@ -53,6 +54,18 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
         "profile = (string) main ")
     );
 
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw, "
+        "format = (string) { NV12 }, "
+        "framerate = (fraction) [0, MAX], "
+        "width = (int) [ 16, MAX ], height = (int) [ 16, MAX ],"
+        "interlace-mode = (string) progressive;"
+        GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_DMABUF,
+            "{ NV12 }") ";")
+    );
+
 #define gst_msdkh265dec_parent_class parent_class
 G_DEFINE_TYPE (GstMsdkH265Dec, gst_msdkh265dec, GST_TYPE_MSDKDEC);
 
@@ -161,6 +174,7 @@ gst_msdkh265dec_class_init (GstMsdkH265DecClass * klass)
   gst_msdkdec_prop_install_output_oder_property (gobject_class);
 
   gst_element_class_add_static_pad_template (element_class, &sink_factory);
+  gst_element_class_add_static_pad_template (element_class, &src_factory);
 }
 
 static void