tests: image: try to upload images through vaDeriveImage() too.

On some platforms, vaPutImage() would fail even if it does not involve
color format conversion or scaling, whereas copying raw pixels through
vaDeriveImage() could work instead.

tests/image.c

@@ -363,7 +363,9 @@ image_upload(GstVaapiImage *image, GstVaapiSurface *surface)
 {
     GstVaapiDisplay    *display;
     GstVideoFormat      format;
+    GstVaapiImage      *surface_image;
     GstVaapiSubpicture *subpicture;
+    gboolean            success;
 
     display = gst_vaapi_object_get_display(GST_VAAPI_OBJECT(surface));
     if (!display)
@@ -376,6 +378,14 @@ image_upload(GstVaapiImage *image, GstVaapiSurface *surface)
     if (gst_vaapi_surface_put_image(surface, image))
         return TRUE;
 
+    surface_image = gst_vaapi_surface_derive_image(surface);
+    if (surface_image) {
+        success = gst_vaapi_image_copy(surface_image, image);
+        gst_vaapi_object_unref(surface_image);
+        if (success)
+            return TRUE;
+    }
+
     g_print("could not upload %s image to surface\n",
             gst_vaapi_video_format_to_string(format));