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utils: Handle iterator resyncs in gst_pad_proxy_setcaps()

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Fixes bug #612881.
This commit is contained in:
Sebastian Dröge 2010-03-15 14:05:35 +01:00
parent f9c74afe62
commit fbbb671e54
1 changed files with 26 additions and 10 deletions
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36
gst/gstutils.c
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@ -2756,10 +2756,10 @@ typedef struct
{
GstPad *orig;
GstCaps *caps;
} LinkData;
} SetCapsFoldData;
static gboolean
setcaps_fold_func (GstPad * pad, GValue * ret, LinkData * data)
setcaps_fold_func (GstPad * pad, GValue * ret, SetCapsFoldData * data)
{
gboolean success = TRUE;
@ -2790,7 +2790,7 @@ gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps)
GstIterator *iter;
GstIteratorResult res;
GValue ret = { 0, };
LinkData data;
SetCapsFoldData data;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
@ -2813,12 +2813,27 @@ gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps)
data.orig = pad;
data.caps = caps;
res = gst_iterator_fold (iter, (GstIteratorFoldFunction) setcaps_fold_func,
&ret, &data);
gst_iterator_free (iter);
while (1) {
res = gst_iterator_fold (iter, (GstIteratorFoldFunction) setcaps_fold_func,
&ret, &data);
if (res != GST_ITERATOR_DONE)
goto pads_changed;
switch (res) {
case GST_ITERATOR_RESYNC:
/* reset return value */
g_value_set_boolean (&ret, TRUE);
gst_iterator_resync (iter);
break;
case GST_ITERATOR_DONE:
/* all pads iterated, return collected value */
goto done;
default:
/* iterator returned _ERROR or premature end with _OK,
* mark an error and exit */
goto error;
}
}
done:
gst_iterator_free (iter);
gst_object_unref (element);
@ -2826,10 +2841,11 @@ gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps)
return g_value_get_boolean (&ret);
/* ERRORS */
pads_changed:
error:
{
g_warning ("Pad list changed during proxy_pad_link for element %s",
g_warning ("Pad list return error on element %s",
GST_ELEMENT_NAME (element));
gst_iterator_free (iter);
gst_object_unref (element);
return FALSE;
}