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rtpbin: Handle rysnc of iterator when looking for free pad name

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If a new pad was added while iterating then a pad could be
returned that was already in use.

Fixes #630451
This commit is contained in:
Pascal Buhler 2010-04-12 09:49:14 +02:00 committed by Wim Taymans
parent 8337c89c74
commit bd8d80a8e4
1 changed files with 31 additions and 9 deletions
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40
gst/rtpmanager/gstrtpbin.c
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@ -2768,25 +2768,47 @@ gst_rtp_bin_get_free_pad_name (GstElement * element, GstPadTemplate * templ)
{
gboolean name_found = FALSE;
gint session = 0;
GstPad *pad = NULL;
GstIterator *pad_it = NULL;
gchar *pad_name = NULL;
GST_DEBUG_OBJECT (element, "find a free pad name for template");
while (!name_found) {
gboolean done = FALSE;
g_free (pad_name);
pad_name = g_strdup_printf (templ->name_template, session++);
pad_it = gst_element_iterate_pads (GST_ELEMENT (element));
name_found = TRUE;
while (name_found &&
gst_iterator_next (pad_it, (gpointer) & pad) == GST_ITERATOR_OK) {
gchar *name;
while (!done) {
gpointer data;
name = gst_pad_get_name (pad);
if (strcmp (name, pad_name) == 0)
name_found = FALSE;
g_free (name);
gst_object_unref (pad);
switch (gst_iterator_next (pad_it, &data)) {
case GST_ITERATOR_OK:
{
GstPad *pad;
gchar *name;
pad = GST_PAD_CAST (data);
name = gst_pad_get_name (pad);
if (strcmp (name, pad_name) == 0) {
done = TRUE;
name_found = FALSE;
}
g_free (name);
gst_object_unref (pad);
break;
}
case GST_ITERATOR_ERROR:
case GST_ITERATOR_RESYNC:
/* restart iteration */
done = TRUE;
name_found = FALSE;
session = 0;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (pad_it);
}