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utils: improve warning when linking elements without common ancestor

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This comes up quite a lot and it's a common mistake, so let's
try to improve the warning message a little.
This commit is contained in:
Tim-Philipp Müller 2015-03-02 20:31:58 +00:00
parent 49a4951a0c
commit a988871074
1 changed files with 18 additions and 2 deletions
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20
gst/gstutils.c
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@ -1446,8 +1446,24 @@ prepare_link_maybe_ghosting (GstPad ** src, GstPad ** sink,
/* we need to setup some ghost pads */
root = find_common_root (e1, e2);
if (!root) {
g_warning ("Trying to connect elements that don't share a common "
"ancestor: %s and %s", GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (e2));
if (GST_OBJECT_PARENT (e1) == NULL)
g_warning ("Trying to link elements %s and %s that don't share a common "
"ancestor: %s hasn't been added to a bin or pipeline, but %s is in %s",
GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (e2),
GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (e2),
GST_ELEMENT_NAME (GST_OBJECT_PARENT (e2)));
else if (GST_OBJECT_PARENT (e2) == NULL)
g_warning ("Trying to link elements %s and %s that don't share a common "
"ancestor: %s hasn't been added to a bin or pipeline, and %s is in %s",
GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (e2),
GST_ELEMENT_NAME (e2), GST_ELEMENT_NAME (e1),
GST_ELEMENT_NAME (GST_OBJECT_PARENT (e1)));
else
g_warning ("Trying to link elements %s and %s that don't share a common "
"ancestor: %s is in %s, and %s is in %s",
GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (e2),
GST_ELEMENT_NAME (e1), GST_ELEMENT_NAME (GST_OBJECT_PARENT (e1)),
GST_ELEMENT_NAME (e2), GST_ELEMENT_NAME (GST_OBJECT_PARENT (e2)));
return FALSE;
}