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pad: check query caps answered and caps not NULL

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=768450
This commit is contained in:
Miguel París Díaz 2016-07-05 16:50:16 +02:00 committed by Sebastian Dröge
parent 52b1d7f42d
commit 9f982e2d75
1 changed files with 14 additions and 5 deletions
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19
gst/gstpad.c
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@ -2759,16 +2759,25 @@ gst_pad_get_allowed_caps (GstPad * pad)
/* Query peer caps */
query = gst_query_new_caps (mycaps);
gst_pad_peer_query (pad, query);
gst_query_parse_caps_result (query, &caps);
gst_caps_ref (caps);
gst_query_unref (query);
if (!gst_pad_peer_query (pad, query)) {
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "Caps query failed");
goto end;
}
gst_caps_unref (mycaps);
gst_query_parse_caps_result (query, &caps);
if (caps == NULL) {
g_warn_if_fail (caps != NULL);
goto end;
}
gst_caps_ref (caps);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "allowed caps %" GST_PTR_FORMAT,
caps);
end:
gst_query_unref (query);
gst_caps_unref (mycaps);
return caps;
no_peer: