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disparity: Don't assume that get_current_caps() returns non-NULL caps after has_current_caps()

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Remove calls to gst_pad_has_current_caps() which then go on to call
gst_pad_get_current_caps() as the caps can go to NULL in between. Instead just
use gst_pad_get_current_caps() and check for NULL.

https://bugzilla.gnome.org/show_bug.cgi?id=759539
This commit is contained in:
Dave Craig 2016-02-23 18:13:37 +02:00 committed by Sebastian Dröge
parent 72e46a4478
commit a5eee1e28a
1 changed files with 2 additions and 2 deletions
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4
ext/opencv/gstdisparity.cpp
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@ -416,12 +416,12 @@ gst_disparity_handle_query (GstPad * pad, GstObject * parent, GstQuery * query)
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
g_mutex_lock (&fs->lock);
if (!gst_pad_has_current_caps (fs->srcpad)) {
current_caps = gst_pad_get_current_caps (fs->srcpad);
if (current_caps == NULL) {
template_caps = gst_pad_get_pad_template_caps (pad);
gst_query_set_caps_result (query, template_caps);
gst_caps_unref (template_caps);
} else {
current_caps = gst_pad_get_current_caps (fs->srcpad);
gst_query_set_caps_result (query, current_caps);
gst_caps_unref (current_caps);
}