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query: Add an empty structure in writable_structure() if there is none yet

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This is consistent with how it works for GstEvent already.
This commit is contained in:
Sebastian Dröge 2017-12-06 13:36:30 +02:00
parent 62ebee096b
commit c813b1c276
1 changed files with 12 additions and 1 deletions
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13
gst/gstquery.c
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@ -731,10 +731,21 @@ gst_query_get_structure (GstQuery * query)
GstStructure *
gst_query_writable_structure (GstQuery * query)
{
GstStructure *structure;
g_return_val_if_fail (GST_IS_QUERY (query), NULL);
g_return_val_if_fail (gst_query_is_writable (query), NULL);
return GST_QUERY_STRUCTURE (query);
structure = GST_QUERY_STRUCTURE (query);
if (structure == NULL) {
structure =
gst_structure_new_id_empty (gst_query_type_to_quark (GST_QUERY_TYPE
(query)));
gst_structure_set_parent_refcount (structure, &query->mini_object.refcount);
GST_QUERY_STRUCTURE (query) = structure;
}
return structure;
}
/**