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query: Add an empty structure in writable_structure() if there is none yet
This is consistent with how it works for GstEvent already.
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1 changed files with 12 additions and 1 deletions
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@ -731,10 +731,21 @@ gst_query_get_structure (GstQuery * query)
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GstStructure *
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gst_query_writable_structure (GstQuery * query)
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{
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GstStructure *structure;
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g_return_val_if_fail (GST_IS_QUERY (query), NULL);
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g_return_val_if_fail (gst_query_is_writable (query), NULL);
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return GST_QUERY_STRUCTURE (query);
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structure = GST_QUERY_STRUCTURE (query);
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if (structure == NULL) {
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structure =
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gst_structure_new_id_empty (gst_query_type_to_quark (GST_QUERY_TYPE
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(query)));
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gst_structure_set_parent_refcount (structure, &query->mini_object.refcount);
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GST_QUERY_STRUCTURE (query) = structure;
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}
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return structure;
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}
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/**
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