static gboolean
forward_event (GstInterleave * self, GstEvent * event)
{
gboolean ret;
GstIterator *it;
GValue vret = { 0 };
GST_LOG_OBJECT (self, "Forwarding event %p (%s)", event,
GST_EVENT_TYPE_NAME (event));
ret = TRUE;
g_value_init (&vret, G_TYPE_BOOLEAN);
g_value_set_boolean (&vret, TRUE);
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (self));
gst_iterator_fold (it, (GstIteratorFoldFunction) forward_event_func, &vret,
event);
gst_iterator_free (it);
gst_event_unref (event);
ret = g_value_get_boolean (&vret);
return ret;
}
guint
count_stream_pads (FsStream *stream)
{
GstIterator *iter = fs_stream_iterate_src_pads (stream);
guint count = 0;
fail_if (iter == NULL);
for (;;)
{
GstIteratorResult res;
GValue val = {0};
g_value_init (&val, G_TYPE_UINT);
res = gst_iterator_fold (iter, pad_count_fold, &val, NULL);
fail_if (res == GST_ITERATOR_ERROR);
if (res != GST_ITERATOR_RESYNC)
{
count = g_value_get_uint (&val);
break;
}
gst_iterator_resync (iter);
}
gst_iterator_free (iter);
return count;
}
static GstCaps *
gst_rtp_mux_getcaps (GstPad * pad, GstRTPMux * mux, GstCaps * filter)
{
GstCaps *caps = NULL;
GstIterator *iter = NULL;
GValue v = { 0 };
GstIteratorResult res;
GstCaps *peercaps;
GstCaps *othercaps;
GstCaps *tcaps;
GstCaps *other_filtered;
peercaps = gst_pad_peer_query_caps (mux->srcpad, filter);
if (peercaps) {
tcaps = gst_pad_get_pad_template_caps (pad);
othercaps = gst_caps_intersect_full (peercaps, tcaps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
} else {
tcaps = gst_pad_get_pad_template_caps (mux->srcpad);
if (filter)
othercaps = gst_caps_intersect_full (filter, tcaps,
GST_CAPS_INTERSECT_FIRST);
else
othercaps = gst_caps_copy (tcaps);
}
gst_caps_unref (tcaps);
clear_caps (othercaps, FALSE);
other_filtered = gst_caps_copy (othercaps);
clear_caps (other_filtered, TRUE);
g_value_init (&v, GST_TYPE_CAPS);
iter = gst_element_iterate_sink_pads (GST_ELEMENT (mux));
do {
gst_value_set_caps (&v, other_filtered);
res = gst_iterator_fold (iter, same_clock_rate_fold, &v, pad);
gst_iterator_resync (iter);
} while (res == GST_ITERATOR_RESYNC);
gst_iterator_free (iter);
gst_caps_unref (other_filtered);
caps = gst_caps_intersect ((GstCaps *) gst_value_get_caps (&v), othercaps);
g_value_unset (&v);
gst_caps_unref (othercaps);
if (res == GST_ITERATOR_ERROR) {
gst_caps_unref (caps);
caps = gst_caps_new_empty ();
}
return caps;
}
/**
* gst_iterator_foreach:
* @it: The #GstIterator to iterate
* @func: the function to call for each element.
* @user_data: user data passed to the function
*
* Iterate over all element of @it and call the given function @func for
* each element.
*
* Returns: the result call to gst_iterator_fold(). The iterator will not be
* freed.
*
* MT safe.
*/
GstIteratorResult
gst_iterator_foreach (GstIterator * it, GFunc func, gpointer user_data)
{
ForeachFoldData data;
data.func = func;
data.user_data = user_data;
return gst_iterator_fold (it, (GstIteratorFoldFunction) foreach_fold_func,
NULL, &data);
}
/* forwards the event to all sinkpads, takes ownership of the
* event
*
* Returns: TRUE if the event could be forwarded on all
* sinkpads.
*/
static gboolean
forward_event (GstAdder * adder, GstEvent * event, gboolean flush)
{
gboolean ret;
GstIterator *it;
GstIteratorResult ires;
GValue vret = { 0 };
EventData data;
GST_LOG_OBJECT (adder, "Forwarding event %p (%s)", event,
GST_EVENT_TYPE_NAME (event));
data.event = event;
data.flush = flush;
g_value_init (&vret, G_TYPE_BOOLEAN);
g_value_set_boolean (&vret, FALSE);
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (adder));
while (TRUE) {
ires =
gst_iterator_fold (it, (GstIteratorFoldFunction) forward_event_func,
&vret, &data);
switch (ires) {
case GST_ITERATOR_RESYNC:
GST_WARNING ("resync");
gst_iterator_resync (it);
g_value_set_boolean (&vret, TRUE);
break;
case GST_ITERATOR_OK:
case GST_ITERATOR_DONE:
ret = g_value_get_boolean (&vret);
goto done;
default:
ret = FALSE;
goto done;
}
}
done:
gst_iterator_free (it);
GST_LOG_OBJECT (adder, "Forwarded event %p (%s), ret=%d", event,
GST_EVENT_TYPE_NAME (event), ret);
gst_event_unref (event);
return ret;
}
/**
* gst_iterator_find_custom:
* @it: The #GstIterator to iterate
* @func: the compare function to use
* @user_data: user data passed to the compare function
*
* Find the first element in @it that matches the compare function @func.
* @func should return 0 when the element is found.
*
* The iterator will not be freed.
*
* This function will return NULL if an error or resync happened to
* the iterator.
*
* Returns: The element in the iterator that matches the compare
* function or NULL when no element matched.
*
* MT safe.
*/
gpointer
gst_iterator_find_custom (GstIterator * it, GCompareFunc func,
gpointer user_data)
{
GValue ret = { 0, };
GstIteratorResult res;
FindCustomFoldData data;
g_value_init (&ret, G_TYPE_POINTER);
data.func = func;
data.user_data = user_data;
/* FIXME, we totally ignore RESYNC and return NULL so that the
* app does not know if the element was not found or a resync happened */
res =
gst_iterator_fold (it, (GstIteratorFoldFunction) find_custom_fold_func,
&ret, &data);
/* no need to unset, it's just a pointer */
return g_value_get_pointer (&ret);
}
static gboolean
_gst_context_run_query (GstElement * element, GstQuery * query,
GstPadDirection direction)
{
GstIteratorFoldFunction const func = context_pad_query;
GstIterator *it;
GValue res = { 0 };
g_value_init (&res, G_TYPE_BOOLEAN);
g_value_set_boolean (&res, FALSE);
/* Ask neighbour */
if (direction == GST_PAD_SRC)
it = gst_element_iterate_src_pads (element);
else
it = gst_element_iterate_sink_pads (element);
while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC)
gst_iterator_resync (it);
gst_iterator_free (it);
return g_value_get_boolean (&res);
}
