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parse: Backport "Don't do delayed property setting..."

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Backport "parse: Don't do delayed property setting for top-level
properties."

Modified version of https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/832
that only warns when trying to set a non-existent property instead of
generating a hard parse error, to preserve compatibility.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/839>
This commit is contained in:
Jan Schmidt 2021-07-15 15:08:25 +10:00 committed by GStreamer Marge Bot
parent 23171cb6af
commit 123280064e
1 changed files with 7 additions and 1 deletions
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8
gst/parse/grammar.y.in
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@ -398,7 +398,7 @@ static void gst_parse_element_set (gchar *value, GstElement *element, graph_t *g
}
gst_parse_unescape (pos);
if (GST_IS_CHILD_PROXY (element)) {
if (GST_IS_CHILD_PROXY (element) && strstr (value, "::")) {
if (!gst_child_proxy_lookup (GST_CHILD_PROXY (element), value, &target, &pspec)) {
/* do a delayed set */
gst_parse_add_delayed_set (element, value, pos);
@ -408,6 +408,12 @@ static void gst_parse_element_set (gchar *value, GstElement *element, graph_t *g
if (pspec != NULL) {
target = G_OBJECT (g_object_ref (element));
GST_CAT_LOG_OBJECT (GST_CAT_PIPELINE, target, "found %s property", value);
} else if (GST_IS_CHILD_PROXY (element)) {
/* https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/832 made it
* a hard error to try and set a top-level property that doesn't exist on a bin,
* but here in 1.18 we just want to output a debug ERROR but not fail */
GST_ERROR("No property \"%s\" in element \"%s\" that is a child proxy. This will be a hard error in 1.20",
value, GST_ELEMENT_NAME (element));
} else {
SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, \
_("no property \"%s\" in element \"%s\""), value, \