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utils: fix proxy_getcaps

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Make it return the padtemplate caps on errors and no parent.
Only intersect pads of the oposite direction of the source pad.
This commit is contained in:
Wim Taymans 2009-12-08 16:21:41 +01:00
parent 6bff920ba0
commit c6f2a94777
1 changed files with 29 additions and 18 deletions
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47
gst/gstutils.c
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@ -2631,22 +2631,18 @@ static gboolean
getcaps_fold_func (GstPad * pad, GValue * ret, GstPad * orig)
{
gboolean empty = FALSE;
GstCaps *peercaps, *existing;
/* skip the pad, the request came from */
if (G_UNLIKELY (pad != orig)) {
GstCaps *peercaps, *existing;
existing = g_value_get_pointer (ret);
peercaps = gst_pad_peer_get_caps_reffed (pad);
if (G_LIKELY (peercaps)) {
GstCaps *intersection = gst_caps_intersect (existing, peercaps);
existing = g_value_get_pointer (ret);
peercaps = gst_pad_peer_get_caps_reffed (pad);
if (G_LIKELY (peercaps)) {
GstCaps *intersection = gst_caps_intersect (existing, peercaps);
empty = gst_caps_is_empty (intersection);
empty = gst_caps_is_empty (intersection);
g_value_set_pointer (ret, intersection);
gst_caps_unref (existing);
gst_caps_unref (peercaps);
}
g_value_set_pointer (ret, intersection);
gst_caps_unref (existing);
gst_caps_unref (peercaps);
}
gst_object_unref (pad);
return !empty;
@ -2681,14 +2677,19 @@ gst_pad_proxy_getcaps (GstPad * pad)
element = gst_pad_get_parent_element (pad);
if (element == NULL)
return NULL;
goto no_parent;
/* value to hold the return, by default it holds ANY, the ref is taken by
* the GValue. */
g_value_init (&ret, G_TYPE_POINTER);
g_value_set_pointer (&ret, gst_caps_new_any ());
iter = gst_element_iterate_pads (element);
/* only iterate the pads in the oposite direction */
if (GST_PAD_IS_SRC (pad))
iter = gst_element_iterate_sink_pads (element);
else
iter = gst_element_iterate_src_pads (element);
while (1) {
res =
gst_iterator_fold (iter, (GstIteratorFoldFunction) getcaps_fold_func,
@ -2722,19 +2723,29 @@ done:
caps = g_value_get_pointer (&ret);
g_value_unset (&ret);
intersected = gst_caps_intersect (caps, gst_pad_get_pad_template_caps (pad));
gst_caps_unref (caps);
if (caps) {
intersected =
gst_caps_intersect (caps, gst_pad_get_pad_template_caps (pad));
gst_caps_unref (caps);
} else {
intersected = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
return intersected;
/* ERRORS */
no_parent:
{
GST_DEBUG_OBJECT (pad, "no parent");
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
error:
{
g_warning ("Pad list returned error on element %s",
GST_ELEMENT_NAME (element));
gst_iterator_free (iter);
gst_object_unref (element);
return NULL;
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
}