context: fix get_attribute() value result.

Unknown attributes, or attributes that are not supported for the given
profile/entrypoint pair have a return value of VA_ATTRIB_NOT_SUPPORTED.
So, return failure in this case.

diff --git a/gst-libs/gst/vaapi/gstvaapicontext.c b/gst-libs/gst/vaapi/gstvaapicontext.c
index 8651e90..7524b51 100644 (file)
--- a/gst-libs/gst/vaapi/gstvaapicontext.c
+++ b/gst-libs/gst/vaapi/gstvaapicontext.c
@@ -425,6 +425,8 @@ gst_vaapi_context_get_attribute (GstVaapiContext * context,
   GST_VAAPI_OBJECT_UNLOCK_DISPLAY (context);
   if (!vaapi_check_status (status, "vaGetConfigAttributes()"))
     return FALSE;
+  if (attrib.value == VA_ATTRIB_NOT_SUPPORTED)
+    return FALSE;
 
   if (out_value_ptr)
     *out_value_ptr = attrib.value;